绍兴市工业废水与生活污水分类收集、分质提标技术路线

Technical Route of Classified Collection and Separate Upgrading of Industrial Wastewater and Domestic Sewage in Shaoxing

按照国家环保部门的要求,绍兴市工业废水必须在企业内处理到COD≤200 mg/L方可排入污水处理厂,为此大量分散企业要将污水COD从500 mg/L提标至200 mg/L,在投资、土地、管理等方面均存在困难,因此,提出将工业废水由分散预处理改为利用现状污水处理设施集中预处理的方式,并实现全部工业废水和生活污水分类收集与分别处理。为实现该目标,提出了绍兴市污水输送系统改造规划,并确定了工业废水集中预处理和深度处理的工艺流程。该技术路线既合理利用了现状处理设施,又达到了生活污水和工业废水达标排放的目的,节约了工程建设投资,也提高了运行稳定性、降低了分散监管的难度,对相似地区具有一定的参考价值。

The national environmental protection department requires that the COD in the industrial wastewater must be treated to less than 200 mg/L in the enterprise before being discharged into the sewage treatment plant in Shaoxing. To meet this requirement, a large number of dispersed enterprises need to reduce the COD in the effluent from 500 mg/L to 200 mg/L, and there are difficulties in terms of investment, land and management. Therefore, the decentralized pretreatment of the industrial wastewater was changed to the centralized pretreatment in the city by using the current sewage treatment facilities, and the classified collection and separate treatment of all the industrial wastewater and domestic sewage were realized. To achieve this goal, the reconstruction plan of Shaoxing sewage transport system was proposed, and the process flow of concentrated pretreatment and advanced treatment of the industrial wastewater was determined. The technical route not only makes rational use of the current treatment facilities, but also achieves the purpose of up-to-standard discharge of the domestic sewage and industrial wastewater. In addition, it also saves project construction investment, improves operation stability and reduces the difficulty of decentralized supervision. This technical route has a certain reference value to similar areas.