制衣废水处理工程的工艺设计及调试

DESIGN AND ADJUSTMENT OF THE WASTEWATER TREATMENT TECHNOLOGY FOR A GARMENT FACTORY

采用混凝沉淀-水解酸化-二级接触氧化工艺处理东莞某制衣公司废水。运行结果表明，在pH调节为7～7．5，某混凝剂投加量为20mg／L，水解酸化停留时间为6h，有机负荷为1．5kgBOD5／（m^3．d）时，COD、BOD5和色度的平均去除率分别为86％、92％YO90％，出水水质达到《污水综合排放标准》（688978—1996）二级标准。给出了混凝加药单元及接触氧化池单元的调试方法，并对可能出现的问题提出了解决的措施。

The integrated process of the coagulating sedimentation, acidification hydrolization and secondary bio-contact oxidation was adapted to treat the wastewater of a garment factory in Dongguan. The results indicated that the removal ratio of COD, BOD~ and chroma reached 86%, 92% and 90% respectively under the as following conditions. The pH value is at the range of 7-7.5; the concentration of the coagulating agent is 20 rag/L; the residence time of acidification hydrolization is 6 h, and the organic load is 1.5kg BODJ（m^3.d）. After the treatment, the quantity of effluent can satisfy the demand of the Secondary Standard of Integrated Wastewater Discharge Standard （GB8978-1996） in China. The adjustment operation of the coagulating and bio-contact oxidation was introduced, and the solutions for the potential problems in this treatment process were supplied also.