Treatment of textile printing and dyeing wastewater by coagulation-anoxia-aerobe technology
Textile printing and dyeing wastewater is treated with coagulationhy drolyt icacidification, and biological contact oxidation process: treating quantity 4000m3/d, inflow CODCrvalue is 1000~3000mg/L, chromaticity value is 512~1024 times, pH is 11~13. From its running in July, 1998 til now,the average removal efficiencies of CODCr and chromaticity are 92. 32% and 92. 19% respect ively, and pH of effluent value is 7. All the quality indexes of the treated water fit Grade One requir ement of 《Discharge Standard of Indust rial Wateqr Pollution of Printing and Dyeing》(GB4287-1992). The running results show that the treatment efficiency of the technology is stable, tolerable shock load range is wide and the combination of processes is reasonable.
ZHENG Shuzhong, WANG Zhongcheng, XU Qingyuan, ZHANG Yanfang, DAI Ruiquan, JI Qing . Treatment of textile printing and dyeing wastewater by coagulation-anoxia-aerobe technology[J]. Industrial Water Treatment, 2000 , 20(8) : 33 -36 . DOI: 10.11894/1005-829x.2000.20(8).33
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