Processing technology for waste emulsified liquid and machining wastewater

Abstract

The invention discloses a processing technology for waste emulsified liquid and machining wastewater. The processing technology comprises a pre-treatment process, a lime milk treatment process, a pH value adjustment process, a hydrolysis-acidification process, an aerobic treatment process, a solid-liquid separation process and a sludge treatment process successively along a treatment sequence. By adopting a series of treatment of the above pre-treatment process, the lime milk treatment process, the pH value adjustment process, the hydrolysis-acidification process, the aerobic treatment process, the solid-liquid separation process and the sludge treatment process, the finally obtained processed water discharged to nature meets a standard completely; and mud in sewage can be separated out, to realize classified discharge.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a treatment process for waste emulsion and mechanical processing wastewater. Background technique [0002] In the machining industry, emulsions are used to cool workpieces, so a pile of waste gas emulsions and waste water mixed with grease and engine oil will be generated. This type of wastewater mainly contains emulsion, grease, engine oil, surfactants, etc., but since there is a stable film on the droplet interface in the above-mentioned discarded emulsion and wastewater, oil and water are not easy to separate. [0003] For this reason, the above-mentioned discarded emulsion and waste water need to undergo a series of treatments before being discharged into nature, otherwise they will pollute the water body if they are directly discharged into the natural water body, causing the water body to lack oxygen and affecting the survival of fish ...

AI Technical Summary

Problems solved by technology

This type of wastewater mainly contains emulsion, grease, engine oil, surfactants, etc., but because there is a stable film on the droplet interface in the above-mentioned waste emulsion and wastewater, oil and water are not easy to separate

[0003] For this reason, the above-mentioned discarded emulsion and waste water need to undergo a series of treatments before being discharged into nature, otherwise they will pollute the water body if they are directly discharged into the natural water body, causing the water body to lack oxygen and affecting the survival of fish and other aquatic animals. At the same time, the suspended solids in the sewage are easy to decompose under anaerobic conditions to produce odor and deteriorate the water quality

[0004] The treatment of organic sewage before being discharged into nature generally uses microbial strains to degrade the organic matter in the sewage, but this traditional sewage treatment method has incomplete treatment