I. Mansir, Yassine Naji, A. Scardigno, G. Dragonetti, Mohamed El Otmani, L. Bouchaou, R. Choukr-allah
Treated wastewater (TWW) use represents a strategic prospect for sustainable agricultural development in water-scarce countries. The objective of this study was to evaluate the feasibility of adopting an innovative nozzle and irrigation management support (SIM) to promote the cultivation of olive trees under TWW in Morocco. The study involved 4-year-old olive trees irrigated according to the water requirement estimated by both the SIM model and the FAO56 method. The results showed that neither agronomic and physiological parameters nor leaves were affected by irrigation with TWW. However, the soil reacted differently as its alkalinity but witnessed a decrease in the fresh water (FW) treatments. The soil solution electrical conductivity was generally higher for TWW than FW. The savings on water and fertilizer costs generated by the TWW and TWW + SIM treatments are 570€ and 585€/ha, respectively, and the adoption of the two innovations generates additional net benefits equal to 45,000€, while to the nozzle with TWW alone, additional net benefits were observed that is 42,000€. A minimum increase in return of only 0.6% is needed to cover investment costs over the 30-year life of the project and the investment could be profitable even with a decrease in return of 48%.
{"title":"The use of innovative technologies to improve treated wastewater irrigation of olive trees in the Souss-Massa region, Morocco","authors":"I. Mansir, Yassine Naji, A. Scardigno, G. Dragonetti, Mohamed El Otmani, L. Bouchaou, R. Choukr-allah","doi":"10.2166/wrd.2024.018","DOIUrl":"https://doi.org/10.2166/wrd.2024.018","url":null,"abstract":"\u0000 Treated wastewater (TWW) use represents a strategic prospect for sustainable agricultural development in water-scarce countries. The objective of this study was to evaluate the feasibility of adopting an innovative nozzle and irrigation management support (SIM) to promote the cultivation of olive trees under TWW in Morocco. The study involved 4-year-old olive trees irrigated according to the water requirement estimated by both the SIM model and the FAO56 method. The results showed that neither agronomic and physiological parameters nor leaves were affected by irrigation with TWW. However, the soil reacted differently as its alkalinity but witnessed a decrease in the fresh water (FW) treatments. The soil solution electrical conductivity was generally higher for TWW than FW. The savings on water and fertilizer costs generated by the TWW and TWW + SIM treatments are 570€ and 585€/ha, respectively, and the adoption of the two innovations generates additional net benefits equal to 45,000€, while to the nozzle with TWW alone, additional net benefits were observed that is 42,000€. A minimum increase in return of only 0.6% is needed to cover investment costs over the 30-year life of the project and the investment could be profitable even with a decrease in return of 48%.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141922310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nur Hafizah Ab Hamid, Ahmad Ilyas Rushdan, Abu Hassan Nordin, Mohd Nor Faiz Norrrahim, Siti Muhamad Nur Husna, Muhamad Iqbal Hakim Mohd Tahir, Nur Sara Batrishia Rosli, Nurin Hudanie Mohd Pakrudin, Azreen Syafiqah Roslee, M. R. M. Asyraf, Victor Feizal Knight
Arsenic contamination resulted from the rapid development of various industries affecting the water resource quality worldwide. Because of the risk of arsenic exposure to both the environment and humans, specific arsenic wastewater treatment is required to meet the anticipated water quality standards. A better understanding of current technologies is crucial while addressing the limitations in order to develop more effective methods for arsenic removal. This work presents updates on adsorption by metal nanoparticles, electrocoagulation, photocatalysis, and membrane methods including nanofiltration, ultrafiltration, reverse osmosis, and microfiltration, their advantages and limitations as well as the future direction of the wastewater treatment industry. Recent strategies using combination technologies show promising potential and present windows of opportunity to be tested in real life and large scale. Further research on these technologies is still required to assess the full potential of these technologies for arsenic removal able to shift the paradigm towards sustainability of tomorrow.
{"title":"A review: The state-of-the-art of arsenic removal in wastewater","authors":"Nur Hafizah Ab Hamid, Ahmad Ilyas Rushdan, Abu Hassan Nordin, Mohd Nor Faiz Norrrahim, Siti Muhamad Nur Husna, Muhamad Iqbal Hakim Mohd Tahir, Nur Sara Batrishia Rosli, Nurin Hudanie Mohd Pakrudin, Azreen Syafiqah Roslee, M. R. M. Asyraf, Victor Feizal Knight","doi":"10.2166/wrd.2024.142","DOIUrl":"https://doi.org/10.2166/wrd.2024.142","url":null,"abstract":"\u0000 \u0000 Arsenic contamination resulted from the rapid development of various industries affecting the water resource quality worldwide. Because of the risk of arsenic exposure to both the environment and humans, specific arsenic wastewater treatment is required to meet the anticipated water quality standards. A better understanding of current technologies is crucial while addressing the limitations in order to develop more effective methods for arsenic removal. This work presents updates on adsorption by metal nanoparticles, electrocoagulation, photocatalysis, and membrane methods including nanofiltration, ultrafiltration, reverse osmosis, and microfiltration, their advantages and limitations as well as the future direction of the wastewater treatment industry. Recent strategies using combination technologies show promising potential and present windows of opportunity to be tested in real life and large scale. Further research on these technologies is still required to assess the full potential of these technologies for arsenic removal able to shift the paradigm towards sustainability of tomorrow.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141652633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Isaac Mbir Bryant, Daniel Akpah, Mary Aku Ogum, Emmanuella Ernestina Gyamfi, Nancy Baka
Human, animal, and plant health is universally paramount, yet the release of poorly treated wastewater into the environment poses a significant risk to all life forms. Hence the need to employ wastewater treatment technologies to curb these health risks. Due to the need to adopt sustainable wastewater treatment technologies, this study investigated the use of a non-aerated hybrid horizontal and vertical flow constructed wetland for the removal of heavy metals and microorganisms from greywater. This was done at six different hydraulic retention times. Results showed significant reductions (p < 0.05) in heavy metal (manganese, zinc, cadmium, magnesium, chromium, and iron) concentrations, with some showing compliance to Ghana's Environmental Protection Agency and the United Kingdom National Environment Regulation recommended discharge limits. Heavy metal concentrations in effluent samples ranged from as low as 0.00 ± 0.15–0.23 ± 0.06 mg/L. Furthermore, there were significant reductions in Escherichia coli and Salmonella typhi (p < 0.05), which also showed compliance to Ghana's Environmental Protection Agency effluent discharge standards. The effluents from the system at HRT 3 days showed high removal efficiency ranges of 82–90% of bacteria. It is recommended that hybrid constructed wetlands should be incorporated in the treatment of greywater.
{"title":"Treatment of greywater using a non-aerated combined horizontal and vertical flow constructed wetland","authors":"Isaac Mbir Bryant, Daniel Akpah, Mary Aku Ogum, Emmanuella Ernestina Gyamfi, Nancy Baka","doi":"10.2166/wrd.2024.042","DOIUrl":"https://doi.org/10.2166/wrd.2024.042","url":null,"abstract":"\u0000 \u0000 Human, animal, and plant health is universally paramount, yet the release of poorly treated wastewater into the environment poses a significant risk to all life forms. Hence the need to employ wastewater treatment technologies to curb these health risks. Due to the need to adopt sustainable wastewater treatment technologies, this study investigated the use of a non-aerated hybrid horizontal and vertical flow constructed wetland for the removal of heavy metals and microorganisms from greywater. This was done at six different hydraulic retention times. Results showed significant reductions (p < 0.05) in heavy metal (manganese, zinc, cadmium, magnesium, chromium, and iron) concentrations, with some showing compliance to Ghana's Environmental Protection Agency and the United Kingdom National Environment Regulation recommended discharge limits. Heavy metal concentrations in effluent samples ranged from as low as 0.00 ± 0.15–0.23 ± 0.06 mg/L. Furthermore, there were significant reductions in Escherichia coli and Salmonella typhi (p < 0.05), which also showed compliance to Ghana's Environmental Protection Agency effluent discharge standards. The effluents from the system at HRT 3 days showed high removal efficiency ranges of 82–90% of bacteria. It is recommended that hybrid constructed wetlands should be incorporated in the treatment of greywater.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141653722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Expósito, Antonia Maria Lorenzo Lopez, Julio Berbel
The new European Union regulation on the minimum requirements for the use of reclaimed water for irrigation entered into force in June 2023, thereby imposing concerns regarding the costs of this non-conventional resource for potential users in the context of increasing water scarcity in the Mediterranean region. This research offers a comprehensive cost assessment of reclaimed water production based on the financial information gathered from wastewater treatment plants located on the Mediterranean coast of Andalusia (Southern Spain). The results offer valuable information for policy-makers, water operators, and potential users to assess the economic viability of utilising reclaimed water as an alternative source to scarce conventional resources.
{"title":"How much does reclaimed wastewater cost? A comprehensive analysis for irrigation uses in the European Mediterranean context","authors":"A. Expósito, Antonia Maria Lorenzo Lopez, Julio Berbel","doi":"10.2166/wrd.2024.040","DOIUrl":"https://doi.org/10.2166/wrd.2024.040","url":null,"abstract":"\u0000 \u0000 The new European Union regulation on the minimum requirements for the use of reclaimed water for irrigation entered into force in June 2023, thereby imposing concerns regarding the costs of this non-conventional resource for potential users in the context of increasing water scarcity in the Mediterranean region. This research offers a comprehensive cost assessment of reclaimed water production based on the financial information gathered from wastewater treatment plants located on the Mediterranean coast of Andalusia (Southern Spain). The results offer valuable information for policy-makers, water operators, and potential users to assess the economic viability of utilising reclaimed water as an alternative source to scarce conventional resources.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141656579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Z. Liu, M. Y. Xu, H. Yin, C. W. Xie, Q. Liu, H. T. Liu, S. Y. Liang, J. K. Li, T. Y. Zhang, T. Li, H. Y. Hu, B. Xu
Membrane fouling is a prominent issue that affects the stable and efficient operation of reverse osmosis (RO) in reused water treatment. In this study, a zero-discharge RO system was adopted to treat the ultrafiltration permeate from a steel plant with the combined multi-wavelength UV-LED/chlorine process, focusing on organic structure modification and membrane fouling control. The results showed that the UV-LED/chlorine process could not only efficiently remove the dissolved organic carbon and the total nitrogen of the RO influent but also alter the organic substances from large molecules to small ones. In addition, the longer wavelength of a 295 nm UV-LED/chlorine process exhibited a greater RO permeate flux of 158 LMH, as compared to the shorter wavelength of 255 nm with the flux of 152 LMH. Moreover, compared to the single-wavelength, the dual-wavelength UV-LED/chlorine process played a more significant role in RO filtration performance, which induced a looser and thinner foulant structure, resulting in an 8% larger permeate flux and recovery at 275 + 295 nm than at 295 nm. This study demonstrated that the combined UV-LED/chlorine process could effectively alleviate RO membrane fouling. Our findings can provide theoretical and technical support for the sustainable development of membrane-based reused water treatment in the steel industry.
{"title":"Application of the multi-wavelength UV-LED/chlorine process to improve reverse osmosis membrane performance for reused water treatment in the steel industry","authors":"Z. Liu, M. Y. Xu, H. Yin, C. W. Xie, Q. Liu, H. T. Liu, S. Y. Liang, J. K. Li, T. Y. Zhang, T. Li, H. Y. Hu, B. Xu","doi":"10.2166/wrd.2024.005","DOIUrl":"https://doi.org/10.2166/wrd.2024.005","url":null,"abstract":"\u0000 Membrane fouling is a prominent issue that affects the stable and efficient operation of reverse osmosis (RO) in reused water treatment. In this study, a zero-discharge RO system was adopted to treat the ultrafiltration permeate from a steel plant with the combined multi-wavelength UV-LED/chlorine process, focusing on organic structure modification and membrane fouling control. The results showed that the UV-LED/chlorine process could not only efficiently remove the dissolved organic carbon and the total nitrogen of the RO influent but also alter the organic substances from large molecules to small ones. In addition, the longer wavelength of a 295 nm UV-LED/chlorine process exhibited a greater RO permeate flux of 158 LMH, as compared to the shorter wavelength of 255 nm with the flux of 152 LMH. Moreover, compared to the single-wavelength, the dual-wavelength UV-LED/chlorine process played a more significant role in RO filtration performance, which induced a looser and thinner foulant structure, resulting in an 8% larger permeate flux and recovery at 275 + 295 nm than at 295 nm. This study demonstrated that the combined UV-LED/chlorine process could effectively alleviate RO membrane fouling. Our findings can provide theoretical and technical support for the sustainable development of membrane-based reused water treatment in the steel industry.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141664257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Environmental water sources are under increasing threat due to the addition of harmful chemicals that are not addressed by conventional water treatment processes. To work on this concern, the current study aimed to synthesize sono-assisted Fe-modified activated carbon–chitosan (FeAcC) composite and construct a laboratory-scale ozone-integrated fluidized bed reactor (FBR) to eliminate phenolphthalein (php). After 120 min of incubation, the adsorbent demonstrated a 27.28 mg g−1 of php adsorption capacity at a pH of 4 with 0.5 g L−1 of adsorbent dosage. The adsorption efficacy and mechanism were defined using isotherm and kinetic models. The study investigated the impact of different factors, including initial concentration, reuse of FeAcC, recirculation flow rate, and hydraulic retention time (HRT), on the efficiency of php removal. The optimum removal efficiency was observed at approximately 95% after 20 min of operation at 1.5 L min−1 recirculation flow rate (batch FBR) and 70 min of HRT (continuous FBR) under a 400 mg h−1 ozonation rate. Experimental parameters were optimized using response surface methodology with central composite design to improve php removal. The large-scale implementation of the findings in the future can be a step for adding new technology for clean water treatment processes for emerging toxic organic pollutants.
{"title":"Adsorptive and oxidative removal of phenolphthalein by sono-assisted synthesized FeAcC in advanced oxidation-integrated fluidized bed reactor","authors":"Gopal Italiya, S. Subramanian","doi":"10.2166/wrd.2024.028","DOIUrl":"https://doi.org/10.2166/wrd.2024.028","url":null,"abstract":"\u0000 \u0000 Environmental water sources are under increasing threat due to the addition of harmful chemicals that are not addressed by conventional water treatment processes. To work on this concern, the current study aimed to synthesize sono-assisted Fe-modified activated carbon–chitosan (FeAcC) composite and construct a laboratory-scale ozone-integrated fluidized bed reactor (FBR) to eliminate phenolphthalein (php). After 120 min of incubation, the adsorbent demonstrated a 27.28 mg g−1 of php adsorption capacity at a pH of 4 with 0.5 g L−1 of adsorbent dosage. The adsorption efficacy and mechanism were defined using isotherm and kinetic models. The study investigated the impact of different factors, including initial concentration, reuse of FeAcC, recirculation flow rate, and hydraulic retention time (HRT), on the efficiency of php removal. The optimum removal efficiency was observed at approximately 95% after 20 min of operation at 1.5 L min−1 recirculation flow rate (batch FBR) and 70 min of HRT (continuous FBR) under a 400 mg h−1 ozonation rate. Experimental parameters were optimized using response surface methodology with central composite design to improve php removal. The large-scale implementation of the findings in the future can be a step for adding new technology for clean water treatment processes for emerging toxic organic pollutants.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141668989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nur Hafizah Ab Hamid, Ahmad Ilyas Rushdan, Abu Hassan Nordin, Siti Muhamad Nur Husna, Mohd Nor Faiz Norrrahim, V. F. Knight, Muhamad Iqbal Hakim Mohd Tahir, Gan Xin Li, Tan Lin Quan, Abdirashid Mohamed Abdullah, Nuh Farhan Tajul Azwa, M. R. M. Asyraf
Cadmium pollution in wastewater has long become a daunting issue because of the rapid development of industries and modern technologies, exposure to cadmium has a significant effect on human health. Thus, it is crucial to treat wastewater, this review aims to discuss and compare different treatments for cadmium in wastewater such as precipitation, coagulation, flotation, membrane filtration, biosorption, and carbon-based nanosorbent. The advances in the development of the current treatments of cadmium in wastewater represent some of the most significant milestones in the treatment strategies with most treatments showing almost complete removal of cadmium wastewater and promising reusability. However, it still possesses certain limitations which further elaborated to give insights into the future development of better treatments. Finally, future direction to address the issue of cadmium pollution was presented to pave the way for the development of more eco-friendly treatments.
{"title":"A state-of-art review on the sustainable technologies for cadmium removal from wastewater","authors":"Nur Hafizah Ab Hamid, Ahmad Ilyas Rushdan, Abu Hassan Nordin, Siti Muhamad Nur Husna, Mohd Nor Faiz Norrrahim, V. F. Knight, Muhamad Iqbal Hakim Mohd Tahir, Gan Xin Li, Tan Lin Quan, Abdirashid Mohamed Abdullah, Nuh Farhan Tajul Azwa, M. R. M. Asyraf","doi":"10.2166/wrd.2024.143","DOIUrl":"https://doi.org/10.2166/wrd.2024.143","url":null,"abstract":"\u0000 \u0000 Cadmium pollution in wastewater has long become a daunting issue because of the rapid development of industries and modern technologies, exposure to cadmium has a significant effect on human health. Thus, it is crucial to treat wastewater, this review aims to discuss and compare different treatments for cadmium in wastewater such as precipitation, coagulation, flotation, membrane filtration, biosorption, and carbon-based nanosorbent. The advances in the development of the current treatments of cadmium in wastewater represent some of the most significant milestones in the treatment strategies with most treatments showing almost complete removal of cadmium wastewater and promising reusability. However, it still possesses certain limitations which further elaborated to give insights into the future development of better treatments. Finally, future direction to address the issue of cadmium pollution was presented to pave the way for the development of more eco-friendly treatments.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141683421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reclaimed wastewater (RWW) has been used globally for centuries, though its application in aquaculture is less extensive. Limited study has addressed impacts of RWW-derived volatile odour compounds (VOCs), such as 2,4,6-trichloroanisole (TCA), 2-methylisoborneol (MIB), and geosmin (GSM), on fish quality. This study aims to (1) assess the feasibility of reusing secondary effluent from a municipal wastewater treatment plant (WWTP) for Plecoglossus altivelis aquaculture in a land-based flow-through system and (2) evaluate the sensory effects of selected VOCs on fish quality. Results showed that increased temperature and ammonia levels in summer RWW negatively affected fish growth, while autumn RWW did not. Heavy metals in fish did not cause health issues. TCA, MIB, and GSM concentrations in fish tissues were 4.7–5.7, 0.3–40.5, and 1.1–1.9 mg kg−1, respectively. TCA emerged as the most concerning odorant, with higher relative odour intensity than MIB and GSM in RWW-cultured fish, regardless of seasonal change. This study is the first to report on a self-constructed aquaculture system using RWW at a WWTP, recommending effective VOC and ammonia removal for sustainable RWW use in aquaculture. Additionally, the study highlighted TCA's impact as an anthropogenic indicator in aquatic environments amid increasing WWTP prevalence in developed cities.
{"title":"Earthy/musty odour bioaccumulation in Plecoglossus altivelis grown in a land-based aquaculture fed by reclaimed secondary effluent in wastewater treatment plant","authors":"Viet-Dung Pham, Ei Ogata, Hiroyuki Kato","doi":"10.2166/wrd.2024.127","DOIUrl":"https://doi.org/10.2166/wrd.2024.127","url":null,"abstract":"\u0000 Reclaimed wastewater (RWW) has been used globally for centuries, though its application in aquaculture is less extensive. Limited study has addressed impacts of RWW-derived volatile odour compounds (VOCs), such as 2,4,6-trichloroanisole (TCA), 2-methylisoborneol (MIB), and geosmin (GSM), on fish quality. This study aims to (1) assess the feasibility of reusing secondary effluent from a municipal wastewater treatment plant (WWTP) for Plecoglossus altivelis aquaculture in a land-based flow-through system and (2) evaluate the sensory effects of selected VOCs on fish quality. Results showed that increased temperature and ammonia levels in summer RWW negatively affected fish growth, while autumn RWW did not. Heavy metals in fish did not cause health issues. TCA, MIB, and GSM concentrations in fish tissues were 4.7–5.7, 0.3–40.5, and 1.1–1.9 mg kg−1, respectively. TCA emerged as the most concerning odorant, with higher relative odour intensity than MIB and GSM in RWW-cultured fish, regardless of seasonal change. This study is the first to report on a self-constructed aquaculture system using RWW at a WWTP, recommending effective VOC and ammonia removal for sustainable RWW use in aquaculture. Additionally, the study highlighted TCA's impact as an anthropogenic indicator in aquatic environments amid increasing WWTP prevalence in developed cities.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.3,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chen-Yan Hu, Sheng-Jie Ji, Zheng-Yu Dong, Yi-Hui Wu, Zi-Yi Dong, Li-Li Hu, Xin-Yu Yang, Hao Liu
The environmental health risks of acetochlor (ACE) have received widespread attention. The removal of ACE via the ultraviolet/persulfate (UV/PS) process was investigated in this study. The degradation of ACE in the UV/PS process fitted pseudo-first-order kinetics. ACE can be effectively removed in the pH range of 5.0–9.0. In addition, the removal efficiency of ACE increases with the increase in PS concentration. The experimental and calculation results prove that the contributions of UV irradiation, sulfate radicals (SO4•-) and hydroxyl radicals (HO·) were 40, 52.1, and 6.43%, respectively. And the second-order rate constants between SO4•- and HO· with ACE are 3.5 × 109 and 5.6 × 109M−1s−1, respectively. The influences of different water matrices were explored. Both chloride ions and bicarbonate can inhibit the degradation of ACE, while the effects of sulfate ions and nitrate can be negligible. Humic acid (HA) has an inhibitory effect of ACE degradation. The intermediates were detected and the possible degradation pathway of ACE was proposed. The results of this study can provide technical support for the control of ACE in the environment.
{"title":"Degradation of acetochlor via the UV/persulfate process: Mechanisms, kinetics, and pathways","authors":"Chen-Yan Hu, Sheng-Jie Ji, Zheng-Yu Dong, Yi-Hui Wu, Zi-Yi Dong, Li-Li Hu, Xin-Yu Yang, Hao Liu","doi":"10.2166/wrd.2024.025","DOIUrl":"https://doi.org/10.2166/wrd.2024.025","url":null,"abstract":"\u0000 \u0000 The environmental health risks of acetochlor (ACE) have received widespread attention. The removal of ACE via the ultraviolet/persulfate (UV/PS) process was investigated in this study. The degradation of ACE in the UV/PS process fitted pseudo-first-order kinetics. ACE can be effectively removed in the pH range of 5.0–9.0. In addition, the removal efficiency of ACE increases with the increase in PS concentration. The experimental and calculation results prove that the contributions of UV irradiation, sulfate radicals (SO4•-) and hydroxyl radicals (HO·) were 40, 52.1, and 6.43%, respectively. And the second-order rate constants between SO4•- and HO· with ACE are 3.5 × 109 and 5.6 × 109M−1s−1, respectively. The influences of different water matrices were explored. Both chloride ions and bicarbonate can inhibit the degradation of ACE, while the effects of sulfate ions and nitrate can be negligible. Humic acid (HA) has an inhibitory effect of ACE degradation. The intermediates were detected and the possible degradation pathway of ACE was proposed. The results of this study can provide technical support for the control of ACE in the environment.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141352383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Annamalai Nataraj, D. Mondhe, Vishwananth Srikantaiah, F. Ishtiaq
Climate change and health are closely linked to urban wastewater used for irrigation. Sewage treatment plants (STPs) provide ideal environments and niche availability for the transmission of antibiotic resistance genes (ARGs) among pathogenic and non-pathogenic bacteria. In this study, we examined the differential effect of sewage processing methods from the inlet to the outlet on the microbial diversity and antibiotic resistomes of 26 STPs in the urban sewage network of Bengaluru, India. We screened 478 ARGs and found 273 ARGs in wastewater, including clinically relevant genes such as CTX-M, qnr, sul-1, and NDM-1, which confer resistance to six major classes of antibiotics. The richness of ARGs was higher in sewage inlets compared with outlets. We observed a downward shift in drug classes from inlet to outlet samples, except for aminoglycosides, beta-lactams, MLSB, and tetracycline. Inlet samples exhibited more complex correlations between ARGs and bacteria compared with outlet samples. Our findings serve as a baseline study that could aid in the quantification of genes from both culturable and non-culturable taxa and will assist in the development of policies and strategies to address water quality issues associated with the use of recycled water.
{"title":"Metagenomic analysis reveals differential effects of sewage treatment on the microbiome and antibiotic resistome in Bengaluru, India","authors":"Annamalai Nataraj, D. Mondhe, Vishwananth Srikantaiah, F. Ishtiaq","doi":"10.2166/wrd.2024.032","DOIUrl":"https://doi.org/10.2166/wrd.2024.032","url":null,"abstract":"\u0000 \u0000 Climate change and health are closely linked to urban wastewater used for irrigation. Sewage treatment plants (STPs) provide ideal environments and niche availability for the transmission of antibiotic resistance genes (ARGs) among pathogenic and non-pathogenic bacteria. In this study, we examined the differential effect of sewage processing methods from the inlet to the outlet on the microbial diversity and antibiotic resistomes of 26 STPs in the urban sewage network of Bengaluru, India. We screened 478 ARGs and found 273 ARGs in wastewater, including clinically relevant genes such as CTX-M, qnr, sul-1, and NDM-1, which confer resistance to six major classes of antibiotics. The richness of ARGs was higher in sewage inlets compared with outlets. We observed a downward shift in drug classes from inlet to outlet samples, except for aminoglycosides, beta-lactams, MLSB, and tetracycline. Inlet samples exhibited more complex correlations between ARGs and bacteria compared with outlet samples. Our findings serve as a baseline study that could aid in the quantification of genes from both culturable and non-culturable taxa and will assist in the development of policies and strategies to address water quality issues associated with the use of recycled water.","PeriodicalId":34727,"journal":{"name":"Water Reuse","volume":null,"pages":null},"PeriodicalIF":4.5,"publicationDate":"2024-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141378607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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