膜技术在乳品废水处理中的应用

Application of Membrane Technology in the Treatment of Dairy Wastewater

乳品废水经预处理后,采用微滤与超滤膜技术回收废水中的蛋白,再用纳滤膜脱盐、浓缩乳糖,滤液过反渗透膜即可达到回用或排放要求。探讨预处理工序的必要性,考查超滤与纳滤不同型号膜的运行情况。实验证明,采用膜技术处理乳品废水工艺简单、节能,污水零排放,且回收了废水中的蛋白和糖,实验数据可供工业化参考与借鉴。

Take a pretreatment on The dairy waste water,then adopt the membrane technology of the microfilttation and ultrafiltration for recycle the protein from the waste water,and then adopt the nanofiltration membrane for desalination and the concentration of lactose.In the end,the filtrate can be recycling and discharging by the osmosis membranes.This paper discussed the need for pretreatment processes,examined the different types of ultrafiltration and nanofiltration membranes in the operation.Experimental results show that treatment of dairy wastewater using membrane technology process is simple,energy saving,zero discharge of sewage and recycling the protein and sugar,test data for reference and experience of industrialization.