工业污水水质复杂，不能用单一流程处理，一般采用多种方法的组合工艺。工业废水处理途径一般有三种情况：一是工业污水单独处理后排放，二是工业污水排入城市污水处理厂一同处理，三是工业污水预处理后进入城市污水处理厂。管网需要进一步完善的地区的企业需要自行处理后达标排放。污水处理对于排污企业来讲是很陌生的，他们对于什么废水，采用什么工艺处理并不了解，所以他们会选择将污水的问题交给环保企业来处理。
The water quality of industrial sewage is complex and can not be treated with a single process, and a combination of various methods is generally adopted. There are three ways to treat industrial waste water. One is the discharge of industrial sewage after being treated separately, the other is that two is the industrial sewage discharged into the municipal sewage treatment plant. Three is the pretreatment of industrial sewage and then enters the municipal sewage treatment plant. The enterprises in the area that need to be further perfected are required to discharge their own discharge after their own treatment. Sewage treatment is very strange for sewage enterprises. They don't understand what processes they are using for wastewater treatment, so they will choose to hand over the problem of sewage to environmental protection enterprises.