摘要：

针对阳极氧化废水难处理的特点,首先对含镍废水及酸碱含油废水分别预处理,再对预处理的混合污水进行混凝沉淀及超滤后,将其中70%的综合污水采用两级RO系统处理,30%的综合污水采用混凝沉淀过滤等工艺处理,出水完全达到《污水综合排放标准》(GB 8978-1996)的二级排放标准,其中重金属镍达到《电镀污染物排放标准》(GB 21900-2008)的表2标准,很好地实现了废水的处理及中水的回用.

关键词: 阳极氧化废水, 重金属, 含镍废水, 中水回用

Abstract:

Since the anodizing wastewater is difficult to be treated,the nickel-containing wastewater and the wastewater containing acid/alkali/oil should firstly be pre-treated separately. Then,after the pre-treated and mixed wastewater has gone through coagulation,sedimentation and ultra-filtration processes,70% of the integrated wastewater should be treated by the two-step RO system,and 30% of the integrated wastewater be treated by processes,such as coagulation,sedimentation,filtration,etc. The results show that the effluent can completely meet the second level requirements,specified in the Integrated Wastewater Discharge Standard(GB 8978-1996),and the heavy metal Ni can reach the requirements specified in Table 2 of the Emission Standard of Pollutants from Electroplating (GB 21900-2008). The engineering successfully realizes the treatment of anodizing wastewater and the reuse of reclaimed water.

Key words: anodizing wastewater, heavy metal, nickel-containing wastewater, water reuse

中图分类号: 

• X703