Advanced treatment and reclamation of dying and printing wastewater using coagulation-UF-membrane system
微絮凝-超滤-膜系统深度处理印染废水

Coagulation-UF-membrane system was adopted to reclaime dying and printing wastewater treated by A/O system to the discharge standard.The removal rate of pollutants and influence on to the following membrane system by UF were studied. The experimental results show that UF has a high removal rate of tubidity, which is 98.5%,the removal rate of COD,colour and TDS is 17%,10% and 5%,respectively. The application of UF is able to greatly extend the period of chemical washing of the following membrane system, and augument the quantity of effluent by the process indirectly. The quality of effluent can meet the requirement of printing industry. The cost is just 1.8 yuan/t.The process has a bright application respective.