Technological process of treating sewage into pure water

Abstract

The technological process of treating sewage into pure water is completed in a pre-treating unit, a reverse osmosis unit and an electric desalting unit, and features that collected sewage is first treated in the pre-treating unit through its multiple medium filter, ultrafilter and active carbon filter, then treated in the reverse osmosis unit with double-stage reverse osmosis device, and finally electrically desalted in the electric desalting unit to obtain pure water. The technological process can treat sewage into pure water in high efficiency, and may be used in industrial production to realize the closed circulation of sewage to lower the water resource consumption greatly.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a process for processing sewage (ie, waste water) produced in industrial production into pure water for recycling on a production line, and belongs to the technical field of sewage treatment. Background technique [0002] In recent years, with the rapid development of my country's industrial and agricultural production, the demand for water resources is increasing day by day. However, my country is a country seriously short of water, and the supply of water resources is greatly restricted. National conditions determine that our country must take the road of intensive development, and put the cherishing and rational use of water resources in a more prominent position. In this context, the recycling and reuse of sewage has become a very meaningful work. [0003] Sewage is a solvent containing a variety of solutes, and the properties vary greatly depending on the source of the sewage....

AI Technical Summary

Problems solved by technology

[0008] Since the reverse osmosis membrane used in the membrane separation method is relatively delicate and needs to be cleaned regularly, although the full-membrane process for producing pure water has been widely used in water treatment systems at home and abroad, the commonly used system feed water is Cleaner water such as tap water and groundwater

However, the water produced by the existing sewage treatment system including the above-mentioned prior patent application often still contains a lot of impurities. If it is directly used as the raw material water for making pure water, it is very likely that the reverse osmosis membrane will be scrapped prematurely.

Therefore, the existing sewage treatment system usually cannot directly produce pure water

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