Abstract:

Based on the characteristics of the chromium-containing, nickel-containing and integrated electroplating wastewater from a machinery company in Kunshan city, China, the three kinds of wastewater have been treated by physico-chemical and bio-chemical methods, respectively, after collected by classification. The results show that the physico-chemical and bio-chemical technologies for treating electroplating wastewater are effective and stable. The effluent of the whole system can meet the requirements of Emission Standard of Electroplating Pollutants(GB 21900—2008), in which NH₄⁺-N and total phosphorus reach the local standard of Discharge Standard of Main Water Pollutants for Municipal Wastewater Treatment Plant & Key Industries of Taihu Area(DB 32/1072—2007).

Key words: electroplating wastewater, denitrification, A/O process

摘要：

根据昆山某机械公司排放的含铬、含镍及综合电镀废水的性质，采用分类收集后，分别以物化法及生物法对上述3种废水进行了处理。调试运行结果表明：采用物化法及生物法处理电镀废水稳定可靠，处理效果较好，系统整体出水达到了《电镀污染物排放标准》（GB21900—2008）要求，其中氨氮和TP达到了《江苏太湖地区城镇污水处理厂及重点工业行业主要污染物排放限值》（DB 32/1072—2007）要求。

关键词: 电镀废水, 反硝化, A/O工艺

CLC Number: 

• X703.1