废水生物脱氮与零排放技术应用研究

Research on the engineering application of biological denitrification and zero discharge technologies for wastewater

采用生化、反渗透(RO)和三效蒸发器组合工艺,对某企业有机废水进行深度处理,首先通过混凝沉淀、生化处理去除部分有机物和氨氮等污染物,然后利用RO系统去除剩余的有机物和盐分等,最后采用三效蒸发器对RO系统浓水进行蒸发浓缩。运行结果表明,出水水质可满足企业生产工艺用水水质要求,并达到零排放的目的 。

The engineering application of the combined process ,biological chemistry-RO （reverse osmosis）-tripleeffect evaporator to the advanced treatment of the organic wastewater in an enterprise is introduced. Firstly, part of pollutants, such as organisms, ammonia nitrogen, etc. can be removed by coagulating sedimentation and biochemical treatment. Then, the residual organisms and salt can be removed by RO system. At the end, the triple-effect evaporator can be used for the evaporation and concentration of RO system concentrated water. The operation results show that the effluent water quality can meet the requirements for water to be used in production in enterprises, and reach the goal of zero discharge.