Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/40
Ou Xiao-xia, Qin Lei-yun Zuo Qian-qian Deng Li-jun, Cui Zi-shu
The effects of initial pH, Fe3+ and humic acid concentrations on the photodegradation of rhodamine B in Fe3+-containing solutions were studied. The distribution of Fe2+ photoformed in irradiated Fe3+ solution was studied to understand the significance of iron cycling on the removal of rhodamine B. pH has a great influence on the decolorization of dye and the process was most effective when the pH is 3.03. Increasing the dosage of ion (Fe3+) can improve the removal efficiency of rhodamine B. 99.6% of rhodamine B was photodegraded within one hour with a 6 mmol·L–1 of Fe3+. Addition of a certain dose of humic acid can facilitate the degradation of dyes and the photoformation of Fe2+.
{"title":"Photodegradation of Rhodamine B in Fe(III) Solutions","authors":"Ou Xiao-xia, Qin Lei-yun Zuo Qian-qian Deng Li-jun, Cui Zi-shu","doi":"10.12783/ISSN.1544-8053/14/1/40","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/40","url":null,"abstract":"The effects of initial pH, Fe3+ and humic acid concentrations on the photodegradation of rhodamine B in Fe3+-containing solutions were studied. The distribution of Fe2+ photoformed in irradiated Fe3+ solution was studied to understand the significance of iron cycling on the removal of rhodamine B. pH has a great influence on the decolorization of dye and the process was most effective when the pH is 3.03. Increasing the dosage of ion (Fe3+) can improve the removal efficiency of rhodamine B. 99.6% of rhodamine B was photodegraded within one hour with a 6 mmol·L–1 of Fe3+. Addition of a certain dose of humic acid can facilitate the degradation of dyes and the photoformation of Fe2+.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"75 1","pages":"343-348"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75815512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/9
Qingquan Liu, Haifeng Wang Shengli Kong
Climate warming has currently been one of the most important global environmental issues. Coal mine methane (CMM) is a typical greenhouse gas with higher global warming potential and ozone depletion potential than CO2. Unfortunately, it should be noted that the CMM emission increases rapidly with the increasing coal consumption in China. Fast and whole protection technology of borehole is a recently developed method to maintain the drainage efficiency in deep mining level. However, the potential negative impact of screen pipes on CMM drainage efficiency has not been well studied. To investigate this impact, an innovative coal permeability model from elastic to post-failure state was deduced to develop our previous gas migration model. Then redistributed stress, coal permeability and gas pressure around a borehole were studied by implementing the mathematical model into Comsol Multiphysics. Numerical results indicate that the negative impact of screen pipes on drainage subpressure do not affect the drainage efficiency due to the stress redistribution. Engineering application shows that comparing to the traditional borehole protection technology, the gas concentration increases about 120% and the gas flux increases about 110% by using the fast and whole protection technology. The research will provide theoretical foundation of CMM capture and borehole protect technology and is of great significance for the CMM utilization and the global environment.
{"title":"Deep Coal Mine Methane Drainage in China with Lower Greenhouse Gas Emissions: Insights of Borehole Protection Technology","authors":"Qingquan Liu, Haifeng Wang Shengli Kong","doi":"10.12783/ISSN.1544-8053/14/1/9","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/9","url":null,"abstract":"Climate warming has currently been one of the most important global environmental issues. Coal mine methane (CMM) is a typical greenhouse gas with higher global warming potential and ozone depletion potential than CO2. Unfortunately, it should be noted that the CMM emission increases rapidly with the increasing coal consumption in China. Fast and whole protection technology of borehole is a recently developed method to maintain the drainage efficiency in deep mining level. However, the potential negative impact of screen pipes on CMM drainage efficiency has not been well studied. To investigate this impact, an innovative coal permeability model from elastic to post-failure state was deduced to develop our previous gas migration model. Then redistributed stress, coal permeability and gas pressure around a borehole were studied by implementing the mathematical model into Comsol Multiphysics. Numerical results indicate that the negative impact of screen pipes on drainage subpressure do not affect the drainage efficiency due to the stress redistribution. Engineering application shows that comparing to the traditional borehole protection technology, the gas concentration increases about 120% and the gas flux increases about 110% by using the fast and whole protection technology. The research will provide theoretical foundation of CMM capture and borehole protect technology and is of great significance for the CMM utilization and the global environment.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"27 1","pages":"67-75"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84282179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/issn.1544-8053/14/S1/4
Hu Ze, Ge Liang Xu Hang Xie Xiaohui, Gu Sanchun
The cable transmission line has more obvious advantages in long-distance information transmission, and is suitable for the transmission of various MWD signals during drilling. The research on the information transmission pattern of the cable transmission line will be the focus of intelligent drill string. According to the characters of the intelligent drill string, combing with the nonuniform transmission line theory, and considering the effect of temperature variation on the impedance of the smart drill string, the distribution parameters of the cable transmission line has been analyzed. On the basis of the two port network system, the transfer function and the transport matrix of the nonuniform transmission line have been obtained, and the model of nonuniform transmission line impedance of the intelligent drill string cable has been established. In order to verify the feasibility of the established model, the communication channel model has been built utilizing the MATLAB/Simulink software. Through experiment simulation and result analysis, the error rate curves under different parameters have been obtained, the transmission rate and transmission distance of different signals have been explored, and the influence of modulation and demodulation on data transmission quality has been studied, which provides a certain reference for the information transmission pattern of the intelligent drill string.
{"title":"The Research on the Establishment and Simulation of Intelligent Drill String Cables Based on Nonuniform Transmission Line Theory","authors":"Hu Ze, Ge Liang Xu Hang Xie Xiaohui, Gu Sanchun","doi":"10.12783/issn.1544-8053/14/S1/4","DOIUrl":"https://doi.org/10.12783/issn.1544-8053/14/S1/4","url":null,"abstract":"The cable transmission line has more obvious advantages in long-distance information transmission, and is suitable for the transmission of various MWD signals during drilling. The research on the information transmission pattern of the cable transmission line will be the focus of intelligent drill string. According to the characters of the intelligent drill string, combing with the nonuniform transmission line theory, and considering the effect of temperature variation on the impedance of the smart drill string, the distribution parameters of the cable transmission line has been analyzed. On the basis of the two port network system, the transfer function and the transport matrix of the nonuniform transmission line have been obtained, and the model of nonuniform transmission line impedance of the intelligent drill string cable has been established. In order to verify the feasibility of the established model, the communication channel model has been built utilizing the MATLAB/Simulink software. Through experiment simulation and result analysis, the error rate curves under different parameters have been obtained, the transmission rate and transmission distance of different signals have been explored, and the influence of modulation and demodulation on data transmission quality has been studied, which provides a certain reference for the information transmission pattern of the intelligent drill string.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78194001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/2
Kaushal Kumar, S. Garg, Gurprit Singh
In the present work, Rheological characteristics of bottom ash was studied with and without addition of additives. Two additives were selected as Henko detergent and sodium sulfate. The additive added in bottom ash suspension with proportion of 0.2, 0.4 and 0.6% (by weight). The solid concentration of bottom ash suspension varied from 10 to 60% (by weight). Reduction in apparent viscosity is highly noticeable with addition of sodium sulfate as compared to Henko detergent.The investigation reveals that bottom ash suspension in above manner has a potential to transport in slurry pipeline with minimum energy consumptions.
{"title":"Measurement of Flow Characteristics for Multiparticulate Bottom Ash-water Suspension with Additives","authors":"Kaushal Kumar, S. Garg, Gurprit Singh","doi":"10.12783/ISSN.1544-8053/14/1/2","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/2","url":null,"abstract":"In the present work, Rheological characteristics of bottom ash was studied with and without addition of additives. Two additives were selected as Henko detergent and sodium sulfate. The additive added in bottom ash suspension with proportion of 0.2, 0.4 and 0.6% (by weight). The solid concentration of bottom ash suspension varied from 10 to 60% (by weight). Reduction in apparent viscosity is highly noticeable with addition of sodium sulfate as compared to Henko detergent.The investigation reveals that bottom ash suspension in above manner has a potential to transport in slurry pipeline with minimum energy consumptions.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"1 1","pages":"11-17"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88919056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/S1/19
Zhao Wenyu, Chen Jian Xu Liwei Yang Lu Pan Weilian, Feng Chao
Hospital wastewater (HWW) is a source of estrogenic activity compounds in the environmental water system. Once released into water bodies, these compounds disrupt the aquatic ecological balance and even affect human health. On the basis of domestic and foreign literature, the potential chemicals and their properties, such as construction features and toxicological effects, in HWW were summarized and discussed. The advantages of ozone in removing target substances were also summarized.
{"title":"Research Advancements in Ozone Treatment for Estrogenic Activities in Hospital Wastewater","authors":"Zhao Wenyu, Chen Jian Xu Liwei Yang Lu Pan Weilian, Feng Chao","doi":"10.12783/ISSN.1544-8053/14/S1/19","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/S1/19","url":null,"abstract":"Hospital wastewater (HWW) is a source of estrogenic activity compounds in the environmental water system. Once released into water bodies, these compounds disrupt the aquatic ecological balance and even affect human health. On the basis of domestic and foreign literature, the potential chemicals and their properties, such as construction features and toxicological effects, in HWW were summarized and discussed. The advantages of ozone in removing target substances were also summarized.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"25 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72478550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/issn.1544-8053/14/S1/9
Cao Liang, Xue Song Feng Jingchun, Z. Ke
The accelerating urbanization and improvement of living standards have greatly increased the municipal solid waste (MSW) generation in China. Public private partnership (PPP) widely used in the field of waste-to-energy (WTE) industry can decrease the volume of MSW, generate power and address the serious environmental problems caused by MSW. The advantage of PPP model can be expressed in its inherent incentive, expanding product quality, improving capacity utilization, saving transaction costs, improving efficiency of WTE industry. We collect data of municipal solid waste disposal fee from 69 PPP WTE projects of 231 operating projects, covering 30% of all PPP WTE operating projects in 29 provinces from 1999–2016, the spatial-temporal model is built to analyze the waste-to-energy environmental efficiency in PPP waste-toenergy industry.
{"title":"Spatial-temporal Analysis for PPP Waste-to-energy Projects in China","authors":"Cao Liang, Xue Song Feng Jingchun, Z. Ke","doi":"10.12783/issn.1544-8053/14/S1/9","DOIUrl":"https://doi.org/10.12783/issn.1544-8053/14/S1/9","url":null,"abstract":"The accelerating urbanization and improvement of living standards have greatly increased the municipal solid waste (MSW) generation in China. Public private partnership (PPP) widely used in the field of waste-to-energy (WTE) industry can decrease the volume of MSW, generate power and address the serious environmental problems caused by MSW. The advantage of PPP model can be expressed in its inherent incentive, expanding product quality, improving capacity utilization, saving transaction costs, improving efficiency of WTE industry. We collect data of municipal solid waste disposal fee from 69 PPP WTE projects of 231 operating projects, covering 30% of all PPP WTE operating projects in 29 provinces from 1999–2016, the spatial-temporal model is built to analyze the waste-to-energy environmental efficiency in PPP waste-toenergy industry.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72645336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/39
G. Pei, Zhen-ge Wei, Jianjun Liu
This paper treats aluminum surface treatment solution wastewater and adopts coagulation-chemical precipitation method (combination of CaO, PAC and PAM) to remove F–, PO4 3− and SO4 2− . The study explores an approach that can remove F–, PO4 3− and SO4 2− in the wastewater simultaneously. Through optimization and improvement of reagent dosage and reaction conditions, the treated wastewater reaches the national discharge standards. The experimental results show that the optimal conditions for removal of F–, PO4 3− and SO4 2− are: 1150 mg of CaO, 110 mg of PAC, 85 mg of PAM at pH 9 and a reaction temperature of 323 K for a reaction time of 30 min. After treatment, the concentration of F– is 4.30 mg/L, which is lower than discharge standards of fluoride-containing industrial wastewater (10 mg/L). The concentration of PO4 3− is 0.90 mg/L, lower than the second grade of discharge standard of phosphate-containing industrial wastewater (1.0 mg/L). The concentration of SO4 2− is 125mg/L, lower than the maximum of allowable concentration of sulfate in drinking water standards (250 mg/L).
{"title":"Experimental Study of Removing F–, PO4 3− and SO4 2− from Wastewater in Aluminum Surface Treatment Solution","authors":"G. Pei, Zhen-ge Wei, Jianjun Liu","doi":"10.12783/ISSN.1544-8053/14/1/39","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/39","url":null,"abstract":"This paper treats aluminum surface treatment solution wastewater and adopts coagulation-chemical precipitation method (combination of CaO, PAC and PAM) to remove F–, PO4 3− and SO4 2− . The study explores an approach that can remove F–, PO4 3− and SO4 2− in the wastewater simultaneously. Through optimization and improvement of reagent dosage and reaction conditions, the treated wastewater reaches the national discharge standards. The experimental results show that the optimal conditions for removal of F–, PO4 3− and SO4 2− are: 1150 mg of CaO, 110 mg of PAC, 85 mg of PAM at pH 9 and a reaction temperature of 323 K for a reaction time of 30 min. After treatment, the concentration of F– is 4.30 mg/L, which is lower than discharge standards of fluoride-containing industrial wastewater (10 mg/L). The concentration of PO4 3− is 0.90 mg/L, lower than the second grade of discharge standard of phosphate-containing industrial wastewater (1.0 mg/L). The concentration of SO4 2− is 125mg/L, lower than the maximum of allowable concentration of sulfate in drinking water standards (250 mg/L).","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"137 1","pages":"333-341"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73259652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/41
Yong-guang Bi, Bing Liu, Xueming Liu
Nano titanium dioxide (TiO2) was synthesized by using butyl titanium as raw material with sol-gel method and assisted with ultrasound. The products were characterized by X-Ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR). The effects of hydrothermal temperature, ultrasonic time, ultrasonic power and acetic acid dosage were all investigated, and the optimal conditions for the crystal of nano TiO2 were acid dosage 8 mL, temperature at 40°C, extration time 50 min and the ultrasonic power 240 W. A series of drug release experiments were employed in vitro, we found that the maximum drug loading rate reached 67.30%. The results reveal that nano TiO2 is a promising biomedical nanomaterial in the application of drug loading system.
{"title":"The Preparation and the Release Properties of Nanometer Titanium Dioxide","authors":"Yong-guang Bi, Bing Liu, Xueming Liu","doi":"10.12783/ISSN.1544-8053/14/1/41","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/41","url":null,"abstract":"Nano titanium dioxide (TiO2) was synthesized by using butyl titanium as raw material with sol-gel method and assisted with ultrasound. The products were characterized by X-Ray diffraction (XRD), Fourier transform infrared spectrophotometry (FTIR). The effects of hydrothermal temperature, ultrasonic time, ultrasonic power and acetic acid dosage were all investigated, and the optimal conditions for the crystal of nano TiO2 were acid dosage 8 mL, temperature at 40°C, extration time 50 min and the ultrasonic power 240 W. A series of drug release experiments were employed in vitro, we found that the maximum drug loading rate reached 67.30%. The results reveal that nano TiO2 is a promising biomedical nanomaterial in the application of drug loading system.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81470957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/19
Huiping Song, Y. Wei, F. Cheng
Hydrothermal hot-pressing will occur between silica in fly ash and calcium in carbide slag and give rise to high-strength hydrates. High-strength solidified specimens were prepared with fly ash and carbide slag via hydrothermal hot-pressing at 200°C and 7 MPa. The effect of concentration of activator and content of carbide slag on compressive strength of the specimens was analyzed. It was found that when the mass ratio of fly ash to carbide slag was 1:1 and 20% 5 mol/L NaOH solution was added, the solidified specimens contained a large amount of cross-linked fibrous tobermorite with compressive strength of 70.93 MPa. The solidified specimens had a good fixation effect on such heavy metals as Cu, Zn, Cd and Pb. Hydrothermal hot-pressing, featured by simple procedures, easy automation and low cost, is an ideal potential way of utilizing fly ash and carbide slag and fixation of heavy metals.
{"title":"High-Strength Solidification of Fly Ash/Carbide Slag and Its Fixing Ability for Heavy Metals","authors":"Huiping Song, Y. Wei, F. Cheng","doi":"10.12783/ISSN.1544-8053/14/1/19","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/19","url":null,"abstract":"Hydrothermal hot-pressing will occur between silica in fly ash and calcium in carbide slag and give rise to high-strength hydrates. High-strength solidified specimens were prepared with fly ash and carbide slag via hydrothermal hot-pressing at 200°C and 7 MPa. The effect of concentration of activator and content of carbide slag on compressive strength of the specimens was analyzed. It was found that when the mass ratio of fly ash to carbide slag was 1:1 and 20% 5 mol/L NaOH solution was added, the solidified specimens contained a large amount of cross-linked fibrous tobermorite with compressive strength of 70.93 MPa. The solidified specimens had a good fixation effect on such heavy metals as Cu, Zn, Cd and Pb. Hydrothermal hot-pressing, featured by simple procedures, easy automation and low cost, is an ideal potential way of utilizing fly ash and carbide slag and fixation of heavy metals.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"9 1","pages":"155-160"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85717254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-01-01DOI: 10.12783/ISSN.1544-8053/14/1/13
Senlin Zhu, Guolu Yang, Jing Lu
Hydrodynamic conditions have significant impact on planktonic algae growth. However, current numerical simulations rarely considered this factor. The impact of flow disturbance on algae growth rate was reviewed in this study, and laboratory experiments were conducted accordingly to find out the optimal form of velocity factor to be used in the formula of algae growth rate. A general form of velocity factor, which has clear physical meaning, was integrated into a hydrodynamic and water quality model—CE-QUAL-W2 (W2) model. The modified W2 model was applied to simulate water quality conditions in the Lower Minnesota River (LMR). Results showed that the optimal velocity for algae growth is about 0.15 m/s in the LMR, and the modified model can satisfactorily simulate algae growth process.
水动力条件对浮游藻类的生长有显著影响。然而，目前的数值模拟很少考虑这一因素。本研究综述了水流扰动对藻类生长速率的影响，并进行了相应的室内实验，以找出藻类生长速率公式中流速因子的最佳形式。将速度因子的一般形式，具有明确的物理意义，整合到水动力与水质模型- ce - quality -W2 (W2)模型中。采用改进的W2模型对明尼苏达河下游(LMR)水质状况进行了模拟。结果表明，LMR中藻类生长的最佳速度约为0.15 m/s，修正后的模型能较好地模拟藻类生长过程。
{"title":"Numerical Simulation of Flow Disturbance on Algae Growth","authors":"Senlin Zhu, Guolu Yang, Jing Lu","doi":"10.12783/ISSN.1544-8053/14/1/13","DOIUrl":"https://doi.org/10.12783/ISSN.1544-8053/14/1/13","url":null,"abstract":"Hydrodynamic conditions have significant impact on planktonic algae growth. However, current numerical simulations rarely considered this factor. The impact of flow disturbance on algae growth rate was reviewed in this study, and laboratory experiments were conducted accordingly to find out the optimal form of velocity factor to be used in the formula of algae growth rate. A general form of velocity factor, which has clear physical meaning, was integrated into a hydrodynamic and water quality model—CE-QUAL-W2 (W2) model. The modified W2 model was applied to simulate water quality conditions in the Lower Minnesota River (LMR). Results showed that the optimal velocity for algae growth is about 0.15 m/s in the LMR, and the modified model can satisfactorily simulate algae growth process.","PeriodicalId":17101,"journal":{"name":"Journal of Residuals Science & Technology","volume":"111 1","pages":"99-105"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79186565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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