北京某大型城市污水处理厂节能降耗途径和效果分析
|
摘要
城镇污水处理厂作为公共事业的重要支撑,其绿色运行成为建设"两型社会"的必要条件。同时,污水处理又是资源、能源相对集中的行业,节能降耗显得尤为重要。对北京某大型污水处理厂的节能降耗改造进行研究,结果表明,通过更新变频进水泵,除砂、曝气、排泥等系统的优化运行和化学除磷系统的精确控制,节能降耗效益显著,电力消耗降低5. 47%,除磷剂硫酸铝消耗降低28. 4%,絮凝剂聚丙烯酰胺消耗降低7. 3%。仅从电耗和药剂消耗成本考虑,单位污水处理量的成本可降低0. 041元/m~3。同时电力等能源消耗的降低,从源头可有效减少温室气体的排放;除磷药剂的使用量减少,也可降低化学污泥的产生量。该污水处理厂节能降耗改造途径可为其他污水处理厂的运行提供借鉴。
As an important support of public utilities,the green operation of urban wastewater treatment plants have become a necessary condition for the construction of the resource-saving and environment-friendly society. At the same time,wastewater treatment has considered as a relatively concentrated resource and energy industry. So energy saving and consumption reduction would be particularly important. The research on energy saving and consumption reduction in a large Beijing wastewater treatment plant was conducted. The results showed that the significant benefits of saving energy and consumption reduction were achieved by upgrading the variable frequency feed pump,the optimized operation of the desilting,aeration,sludge treatment system and the precise control of chemical phosphorus removal. And the power consumption was reduced by 5. 47%,aluminum sulfate flocculant consumption was reduced by 28. 4%,flocculant polyacrylamide consumption was reduced by 7. 3%.Only from the cost of electricity and drug consumption,the cost per unit of wastewater treatment could be reduced by 0. 041 yuan/m~3. Meanwhile,the reduction of energy consumption,such as electricity,could effectively reduce greenhouse gas emissions from the source. Reducing the use of phosphorus removal agents could also reduce the production of chemical sludge. The way of saving energy and reducing consumption in the wastewater treatment plant could be used to provide reference for the operation of other municipal wastewater treatment plants in Beijing or other places in the country.
As an important support of public utilities,the green operation of urban wastewater treatment plants have become a necessary condition for the construction of the resource-saving and environment-friendly society. At the same time,wastewater treatment has considered as a relatively concentrated resource and energy industry. So energy saving and consumption reduction would be particularly important. The research on energy saving and consumption reduction in a large Beijing wastewater treatment plant was conducted. The results showed that the significant benefits of saving energy and consumption reduction were achieved by upgrading the variable frequency feed pump,the optimized operation of the desilting,aeration,sludge treatment system and the precise control of chemical phosphorus removal. And the power consumption was reduced by 5. 47%,aluminum sulfate flocculant consumption was reduced by 28. 4%,flocculant polyacrylamide consumption was reduced by 7. 3%.Only from the cost of electricity and drug consumption,the cost per unit of wastewater treatment could be reduced by 0. 041 yuan/m~3. Meanwhile,the reduction of energy consumption,such as electricity,could effectively reduce greenhouse gas emissions from the source. Reducing the use of phosphorus removal agents could also reduce the production of chemical sludge. The way of saving energy and reducing consumption in the wastewater treatment plant could be used to provide reference for the operation of other municipal wastewater treatment plants in Beijing or other places in the country.
引文
[1]郭付新．城市污水处理节能降耗途径探析[J]．绿色科技，2017(4):113-114.Guo Fuxin.Analysis on energy saving and consumption reducing methods of urban sewage treatment[J].Journal of Green Science and Technology,2017(4):113-114(in Chinese)．
[2]刘礼祥，张金松，施汉昌，等．城市污水处理厂全流程节能降耗优化运行策略[J]．中国给水排水，2009,25(16):11-15.Liu Lixiang,Zhang Jinsong,Shi Hanchang,et al.Operation strategy for optimization of energy saving and consumption reduction of WWTP-wide process[J].China Water&Wastewater,2009,25(16):11-15(in Chinese)．
[3]高伟明．城镇污水处理厂能耗分析及节能降耗对策[J]．低碳世界，2017(3):22-23.Gao Weiming.Energy consumption analysis and energy saving and consumption reduction measures of urban sewage treatment plant[J].Low Carbon World,2017(3):22-23(in Chinese).
[2]刘礼祥，张金松，施汉昌，等．城市污水处理厂全流程节能降耗优化运行策略[J]．中国给水排水，2009,25(16):11-15.Liu Lixiang,Zhang Jinsong,Shi Hanchang,et al.Operation strategy for optimization of energy saving and consumption reduction of WWTP-wide process[J].China Water&Wastewater,2009,25(16):11-15(in Chinese)．
[3]高伟明．城镇污水处理厂能耗分析及节能降耗对策[J]．低碳世界，2017(3):22-23.Gao Weiming.Energy consumption analysis and energy saving and consumption reduction measures of urban sewage treatment plant[J].Low Carbon World,2017(3):22-23(in Chinese).