WANG Kai,GAO Bo,ZHANG Lei,et al.Experience in Design and Operation of Wastewater Separate Treatment in the Hazardous Waste Disposal Center[J].China Water & Wastewater,2020,36(16):69-73.
危废处置中心污水分质处理工艺设计及运行经验
- Title:
- Experience in Design and Operation of Wastewater Separate Treatment in the Hazardous Waste Disposal Center
- Keywords:
- hazardous waste; wastewater treatment; evaporation system
- 摘要:
- 山东省某危险废物处置中心的污水处理系统建设规模为235 m3/d。根据污水的不同来源和水质特性，分为4类分别收集处理。生产污水和初期雨水采用“还原+中和+絮凝沉淀+活性炭过滤”处理工艺；焚烧污水和渗滤液采用蒸发处理工艺；物化系统污水采用“蒸发＋生化”处理工艺；生活污水与物化污水蒸发系统出水采用“O/A+MBR”工艺处理。详细介绍了4条处理线的工艺流程和设计参数。近半年实际运行效果显示，系统运行稳定，水质波动较小。各项出水水质能够达到《污水排入城镇下水道水质标准》（GB/T 31962—2015）的要求，COD、BOD5、NH3-N、TDS平均去除率分别为95.52%、95.48%、95.13%、99.85%，处理成本约为3.7元/m3。
- Abstract:
- The treatment capacity of a wastewater treatment system of a hazardous waste disposal center in Shandong Province is 235 m3/d. The wastewater was divided into four categories and collected and treated separately according to its different sources and quality characteristics. The production wastewater and initial rainwater were treated by “reduction + neutralization + flocculation and precipitation + activated carbon filtration” process; Incineration wastewater and leachate were treated by evaporation process; Physichemical wastewater was treated by “evaporation+biochemical treatment” process; Domestic sewage and physicochemical evaporation effluent were treated by “O/A+MBR” process. The process flow and design parameters of the four treatment processes were introduced in detail. The actual operation results in the last half year showed that the system operated stably and the water quality fluctuated little. The effluent quality could meet the standard of Wastewater Quality Standards for Discharge to Municipal Sewers (GB/T 31962-2015), the average removal rate of COD,BOD5, NH3-N, TDS was 95.52%, 95.48%, 95.13%, 99.85% respectively, and the treatment cost was 3.7 yuan/m3.
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