"We have implemented biochemical treatment, but the content of COD in the effluent is fluctuated." at the beginning of November,

After a "pulse" of the company's sewage pretreatment site, the pretreatment expert immediately issued a prescription: there are uneven daily and anaerobic treatment in the biochemical treatment process, which needs to be strengthened for 24 hours.

Since the beginning of October, the county drainage company has visited nearly 30 major customer enterprises in related town street. Through face-to-face talk, we understand the problems and opinions of enterprises on the implementation of the concentration charging policy.

At the same time, experts are invited to visit the experts.

During the visit, the experts carefully inquired about the preprocessing process of the enterprises in the current production and operation.

The county drainage company, together with experts, has compiled a practical handbook for the sewage treatment work of all enterprises, which is a manual for the common practice of printing and dyeing enterprises.

The manual is divided into common problems of printing and dyeing wastewater quality testing and common problems solving of printing and dyeing wastewater pretreatment and operation management, which involves commonly used detection methods and characteristics of chemical oxygen demand, and how to correctly store water samples.

"These materials are very necessary for our environmental protection administrators. They are really timely and useful."

"Southern China printing and dyeing" environmentist said.