Experiments were conducted to examine the effects of nylon 66 chemical wastewater treatment by active carbon film filler contact oxidation process. The results showed that the formation of biofilm was relatively rapid on the surface of active carbon film filler, and the treatment efficiency was stable. The removal rate could reach 88.9% and 46.00% for COD and NH3-Nrespectively when the HRT was 22 hours, and the influent concentration of COD was 1036.6mg/L, NH3-N88.7mg/L. As the influent concentration of COD andNH3-N increased to 1915.4mg/L and 123.6mg/Lrespectively, the removal rate of COD could be up to89.7% while NH3-N reduced to 21.4%. Meanwhile moderate swing of filler was beneficial for high treatment efficiency and preventing sludge accumulation.
{"title":"Study on Treatment of Nylon 66 Chemical Wastewater by Active Carbon Film Filler Contact Oxidation Process","authors":"Hai-cheng Liu, Jian Liu, Kui Zhang, Lejun Shi","doi":"10.1109/CDCIEM.2011.300","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.300","url":null,"abstract":"Experiments were conducted to examine the effects of nylon 66 chemical wastewater treatment by active carbon film filler contact oxidation process. The results showed that the formation of biofilm was relatively rapid on the surface of active carbon film filler, and the treatment efficiency was stable. The removal rate could reach 88.9% and 46.00% for COD and NH3-Nrespectively when the HRT was 22 hours, and the influent concentration of COD was 1036.6mg/L, NH3-N88.7mg/L. As the influent concentration of COD andNH3-N increased to 1915.4mg/L and 123.6mg/Lrespectively, the removal rate of COD could be up to89.7% while NH3-N reduced to 21.4%. Meanwhile moderate swing of filler was beneficial for high treatment efficiency and preventing sludge accumulation.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85618016","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}
Li Zhang, Yaobin Ding, R. Chi, Jia Guo, Fengli Peng
Using high-iron-containing desulphurization slag as raw materials, ferrous sulfates with the high purity of 99.0%were prepared by microwave-assisted acid leaching. Ferrous oxalates were prepared from the ferrous sulfate. The effects of dose and reaction temperature were investigated to get ultra-fine ferrous oxalate. Lithium iron phosphates were then synthesized by using mechanical-chemical method with above lab-made ferrous oxalate. The experimental results showed that when the burning temperature of 700oC and reaction time of 4h were used, it was feasible to produce spherical lithium iron phosphate particles with high purity, good crystallinity and evenly distributed particle size (the average diameter of 9.407¦Ìm).
{"title":"Preparation of Lithium Iron Phosphate from High-Iron-Containing Desulphurization Slag","authors":"Li Zhang, Yaobin Ding, R. Chi, Jia Guo, Fengli Peng","doi":"10.1109/CDCIEM.2011.576","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.576","url":null,"abstract":"Using high-iron-containing desulphurization slag as raw materials, ferrous sulfates with the high purity of 99.0%were prepared by microwave-assisted acid leaching. Ferrous oxalates were prepared from the ferrous sulfate. The effects of dose and reaction temperature were investigated to get ultra-fine ferrous oxalate. Lithium iron phosphates were then synthesized by using mechanical-chemical method with above lab-made ferrous oxalate. The experimental results showed that when the burning temperature of 700oC and reaction time of 4h were used, it was feasible to produce spherical lithium iron phosphate particles with high purity, good crystallinity and evenly distributed particle size (the average diameter of 9.407¦Ìm).","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77979606","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}
This paper studied the wastewater treatment in GAO Yang Dyeing and Textile Industrial Park, with the dealing capacity of 19x104 ton/d, on its wastewater discharge, water reuse, energy saving and resources utilization. Through the process optimization consisted of the enhanced chemical conditioning, diagonal up-flow anaerobic reactor, intelligent closed-loop oxygen supply system, double membrane water recycle process and sludge drying- burning circulation, the effluent water all reached the "Emission Standards for Municipal Wastewater Treatment Plant", (GB18918-2002) Alevel, the whole system operated steadily for 2 years and achieved tremendous economic and environmental benefits.
本文对处理能力为19x104 t /d的高阳印纺产业园废水处理进行了废水排放、水回用、节能和资源化利用研究。通过强化化学调节、对角上流式厌氧反应器、智能闭环供氧系统、双膜循环水工艺、污泥干烧循环等工艺优化，出水均达到《城市污水处理厂排放标准》(GB18918-2002)标准，整个系统稳定运行2年，取得了巨大的经济效益和环境效益。
{"title":"Study on Energy Saving and Resources Comprehensive Utilization in a Large Dyeing Industrial Park","authors":"Liu Yunfei, Jiang Nan, Wan Heli","doi":"10.1109/CDCIEM.2011.248","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.248","url":null,"abstract":"This paper studied the wastewater treatment in GAO Yang Dyeing and Textile Industrial Park, with the dealing capacity of 19x104 ton/d, on its wastewater discharge, water reuse, energy saving and resources utilization. Through the process optimization consisted of the enhanced chemical conditioning, diagonal up-flow anaerobic reactor, intelligent closed-loop oxygen supply system, double membrane water recycle process and sludge drying- burning circulation, the effluent water all reached the \"Emission Standards for Municipal Wastewater Treatment Plant\", (GB18918-2002) Alevel, the whole system operated steadily for 2 years and achieved tremendous economic and environmental benefits.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75037150","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}
The connectivity of pore is main factor which affect the permeability of coal seam. In this paper, we perform an experiment on the pore structure in blind coal sample and lean coal sample, a non-destructive inspection equipment ¡°micro-CT experimental system¡± is used to scan coal samples, the least scanning unit resolution of the system is 0.5¦Ìm. Based on the micro-CT images, the 3D digital sample of coal is reconstructed by using the software developed by author, by images segmentation, binarization, reappeared the distribution of pore cluster in three-dimension space, and analyzed the connectivity of pore cluster in coal sample. The experimental result indicated: the major factor influencing on gas drainage efficiency is amount of pores included in the largest pore cluster.
{"title":"Study on the Connectivity of Pore Structure of Coal in Three-Dimensional Space","authors":"Lv Zhaoxing","doi":"10.1109/CDCIEM.2011.491","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.491","url":null,"abstract":"The connectivity of pore is main factor which affect the permeability of coal seam. In this paper, we perform an experiment on the pore structure in blind coal sample and lean coal sample, a non-destructive inspection equipment ¡°micro-CT experimental system¡± is used to scan coal samples, the least scanning unit resolution of the system is 0.5¦Ìm. Based on the micro-CT images, the 3D digital sample of coal is reconstructed by using the software developed by author, by images segmentation, binarization, reappeared the distribution of pore cluster in three-dimension space, and analyzed the connectivity of pore cluster in coal sample. The experimental result indicated: the major factor influencing on gas drainage efficiency is amount of pores included in the largest pore cluster.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74971006","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}
An effective way to boost natural gas production from low pressure gas field was introduced in the paper. The supersonic ejector used the energy of high pressure gas wells, which was generally wasted through the choke valve, as its power supply to boost the low pressure gas production. The field experiment of the natural gas ejector was carried out, and the performance of the ejector was also presented. Moreover, the production of low pressure natural gas well was compared when the natural gas ejector was used or not. The economic analysis shows that the recovery period of the capital was less than several months.
{"title":"Supersonic Ejector to Boost Production from Low Pressure Natural Gas Field","authors":"Gesheng Wu, D. Chong, Weixiong Chen, Junjie Yan","doi":"10.1109/CDCIEM.2011.146","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.146","url":null,"abstract":"An effective way to boost natural gas production from low pressure gas field was introduced in the paper. The supersonic ejector used the energy of high pressure gas wells, which was generally wasted through the choke valve, as its power supply to boost the low pressure gas production. The field experiment of the natural gas ejector was carried out, and the performance of the ejector was also presented. Moreover, the production of low pressure natural gas well was compared when the natural gas ejector was used or not. The economic analysis shows that the recovery period of the capital was less than several months.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75621951","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}
The article discusses wall rock neutralization acidin-situ leaching of uranium testing and pollution of groundwater purification combined with the natural purification of the indoor simulation tests. Test showed that the acidic groundwater can be neutralized by wall rock and the uranium can be also adsorbed. First £¬ the uranium of contaminated groundwater be recovered by ion exchange, Second, regulated pH of wastewater to 7 around using neutralize, Thirdly £¬ adsorbed by the Sand with clay, low grade uranium ore and tailings of lixiviated, the method is advanced which treatment groundwater of acid in-situleaching of uranium using surface treatment and self purification, for acid in-situ leaching of uranium to provide a reference.
{"title":"The Study of Underground Water Treatment Techniques for Acid In-Situ Leaching of Uranium: Surface Water Treatment Combined with the Natural Purification","authors":"Shi Wen-ge, Cai Ping-li","doi":"10.1109/CDCIEM.2011.547","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.547","url":null,"abstract":"The article discusses wall rock neutralization acidin-situ leaching of uranium testing and pollution of groundwater purification combined with the natural purification of the indoor simulation tests. Test showed that the acidic groundwater can be neutralized by wall rock and the uranium can be also adsorbed. First £¬ the uranium of contaminated groundwater be recovered by ion exchange, Second, regulated pH of wastewater to 7 around using neutralize, Thirdly £¬ adsorbed by the Sand with clay, low grade uranium ore and tailings of lixiviated, the method is advanced which treatment groundwater of acid in-situleaching of uranium using surface treatment and self purification, for acid in-situ leaching of uranium to provide a reference.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73660219","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}
Seven typical manufacturing processes of iron and steel corporation are structured. The energy consumption and environmental loads of these processes are separately analyzed, and the indexes of them are summarized and compared. Resource and energy efficiency of short process are obviously higher than long process. Otherwise, indexes of sheet bar processes are the best in long processes, especially the processes after continuous casting.
{"title":"Structure of Typical Iron and Steel Manufacturing Processes & Analysis of Energy Consumption and Environmental Load","authors":"D. Tao","doi":"10.1109/CDCIEM.2011.141","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.141","url":null,"abstract":"Seven typical manufacturing processes of iron and steel corporation are structured. The energy consumption and environmental loads of these processes are separately analyzed, and the indexes of them are summarized and compared. Resource and energy efficiency of short process are obviously higher than long process. Otherwise, indexes of sheet bar processes are the best in long processes, especially the processes after continuous casting.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75790573","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}
Yan Ke-jun, Li Guang-zhi, Zhang Yu-chen, Yang Chun-xiang, Xiao Zuo-yi, Shi Dong-xue, Zhang Chun-hua
using hydrochloric acid solution and rare earth concentrate mixed heating method, which is prepared a new polymer flocculant polymerization of rare earth coagulants(PRE), studied the amount of coagulant, pH value, slowly stir intensity, slowly stir time, sediment time on polymerization of rare earth coagulants coagulation effect. And will fuse rare earth coagulants (PRE) with common coagulants IC simplifies PFC and PAC conducted comparative experiments. By dealing with the yellow studies showed that the polymerization of rare earth coagulants optimum flocculation conditions for pH value for 5 ~ 9, Slowly stir intensity 70r/min, Slowly stir time 10min, Settling time 10min, Polymerization of rare earth of coagulant coagulation effect is better than that of IC simplifies PFC and PAC, Has formed body structure is close-grained, settlement flocculant good performance, less, to generate sludge volume turbidity removal efficiency high characteristic.
{"title":"The Flocculation Condition of Rare Earth Polymerization Coagulants","authors":"Yan Ke-jun, Li Guang-zhi, Zhang Yu-chen, Yang Chun-xiang, Xiao Zuo-yi, Shi Dong-xue, Zhang Chun-hua","doi":"10.1109/CDCIEM.2011.520","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.520","url":null,"abstract":"using hydrochloric acid solution and rare earth concentrate mixed heating method, which is prepared a new polymer flocculant polymerization of rare earth coagulants(PRE), studied the amount of coagulant, pH value, slowly stir intensity, slowly stir time, sediment time on polymerization of rare earth coagulants coagulation effect. And will fuse rare earth coagulants (PRE) with common coagulants IC simplifies PFC and PAC conducted comparative experiments. By dealing with the yellow studies showed that the polymerization of rare earth coagulants optimum flocculation conditions for pH value for 5 ~ 9, Slowly stir intensity 70r/min, Slowly stir time 10min, Settling time 10min, Polymerization of rare earth of coagulant coagulation effect is better than that of IC simplifies PFC and PAC, Has formed body structure is close-grained, settlement flocculant good performance, less, to generate sludge volume turbidity removal efficiency high characteristic.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78644575","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}
The activated sludge from the nitrification section of secondary settling tank in municipal sewage treatment plant is cultured to obtain the nitrobacteria and then inoculates them to the columnar activated carbon in the bio-tricking filter to remove nitric oxide from waste gas. The test studies the effect of the pH of circulating fluid, the circulating fluid flow rate, the empty bed residence time, the inlet NO concentration and organic carbon source on the removal efficiency. The results show that the optimum pH of circulating fluid is 7.5, while the removal efficiency of NO can reach the best. The smaller inlet gas flow and the lower inlet NO concentration, the better the removal efficiency will be. In the experimental range, the circulating fluid flow has an effect on the bio-tricking filter¡¯sremoval efficiency and the most suitable range of circulating fluid flow rate is 0.05~0.10L/h. After the addition of organic carbon source, the removal efficiency of NO increases.
{"title":"Study on Removing Nitric Oxide from Waste Gas by Nitrification Using Bio-trickling Filter","authors":"Li Zhifei, Pang Dehong, A. Yufa","doi":"10.1109/CDCIEM.2011.311","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.311","url":null,"abstract":"The activated sludge from the nitrification section of secondary settling tank in municipal sewage treatment plant is cultured to obtain the nitrobacteria and then inoculates them to the columnar activated carbon in the bio-tricking filter to remove nitric oxide from waste gas. The test studies the effect of the pH of circulating fluid, the circulating fluid flow rate, the empty bed residence time, the inlet NO concentration and organic carbon source on the removal efficiency. The results show that the optimum pH of circulating fluid is 7.5, while the removal efficiency of NO can reach the best. The smaller inlet gas flow and the lower inlet NO concentration, the better the removal efficiency will be. In the experimental range, the circulating fluid flow has an effect on the bio-tricking filter¡¯sremoval efficiency and the most suitable range of circulating fluid flow rate is 0.05~0.10L/h. After the addition of organic carbon source, the removal efficiency of NO increases.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74335852","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}
This study reported the feasibility of flushing remediation of lead (Pb) contaminated soil using thiacalix[4]are netetrasulfonate (TCAS) reagent. Batch experiments were performed to test the factors influencing remediation of lead (Pb) contaminated soil. The effects of pH value, initial conentration and contact time on the removal capacities of lead (Pb) by TCAS reagent had been studied. The results showed that the TCAS reagent was effective for removal of lead (Pb) from the contaminated soil, the optimum TCAS concentration is 0.7% for soil treatment, attaining 93.2% of lead (Pb) in the pH range of 11.0 within 24h.
{"title":"Removal of Lead from a Contaminated Soil by Washing with TCAS Reagent","authors":"Da Zhao, T. Sun, Xiao-jun Hu, X. Hu, X. Song","doi":"10.1109/CDCIEM.2011.83","DOIUrl":"https://doi.org/10.1109/CDCIEM.2011.83","url":null,"abstract":"This study reported the feasibility of flushing remediation of lead (Pb) contaminated soil using thiacalix[4]are netetrasulfonate (TCAS) reagent. Batch experiments were performed to test the factors influencing remediation of lead (Pb) contaminated soil. The effects of pH value, initial conentration and contact time on the removal capacities of lead (Pb) by TCAS reagent had been studied. The results showed that the TCAS reagent was effective for removal of lead (Pb) from the contaminated soil, the optimum TCAS concentration is 0.7% for soil treatment, attaining 93.2% of lead (Pb) in the pH range of 11.0 within 24h.","PeriodicalId":6328,"journal":{"name":"2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77526225","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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