A compound microbial preparation for auxiliary treatment of waste cutting fluid and its application method

Abstract

The invention relates to a composite microbial preparation for assisted treatment of waste cutting fluid. The composite microbial preparation comprises Bacillus licheniformis solid powder, Pseudomonas fluorescens solid powder, catalase and lipase, wherein the four components are mixed, the obtained mixture is added to an active sludge pool, a contact oxidation pool or an aerobic tank, and sewage treatment is performed. According to the present invention, the Bacillus licheniformis and the Pseudomonas fluorescens rapidly grow and breed by using the easily-degraded organic matters in the sewage, and can rapidly degrade the macromolecular organic matters in the wastewater when the Bacillus licheniformis and the Pseudomonas fluorescens grow to achieve a certain concentration, the catalase can rapidly eliminate the OH. free radicals in the system so as to reduce the toxic effects on bacteria and improve the oxygen utilization rate, and the lipase is used for decomposing the organic matters such as animal and vegetable oils in the wastewater, such that various components work in the matched and synergetic manner, the COD in the effluent is significantly reduced, the components are simple and easy to obtained, the cost is low, the additional equipment is not required during the use, the operation is simple, the risk is low, the treatment efficiency of the system can be significantly improved, the stability of the system can be enhanced, the COD in the effluent can be reduced, and the final standard discharge can be achieved.

Description

technical field [0001] The invention belongs to the technical field of purification of wastewater rich in surfactants, in particular to a compound microbial preparation for auxiliary treatment of waste cutting fluid and a method of use thereof. Background technique [0002] Cutting fluid is an industrial liquid used in metal cutting and grinding to cool and lubricate tools and workpieces. Cooling performance, lubricating performance, anti-rust performance, degreasing and cleaning function, anti-corrosion function, easy to dilute. It overcomes the shortcomings of traditional soap-based emulsions, which are easy to smell in summer, difficult to dilute in winter, and poor anti-rust effect, and has no adverse effect on lathe paint. It is suitable for cutting and grinding of ferrous metals. [0003] When the cutting fluid is in use, it needs to be mixed into the water, and then sprayed to the processing position of the lathe, and the water containing the cutting fluid flowing ou...

AI Technical Summary

Problems solved by technology

Since the cutting fluid contains a large amount of mineral oil and various surfactants, conventional physical, chemical and biochemical methods are difficult to treat and discharge up to the standard. Enterprises usually entrust high-concentration waste cutting fluid as hazardous waste to a third party for disposal. The processing cost is high and increases the burden on the enterprise. , while low-concentration waste cutting fluid is often treated through primary treatment of demulsification, flocculation, and precipitation, and then undergoes secondary treatment with domestic sewage through biochemical methods (activated sludge method or anaerobic and aerobic process methods, etc.) to achieve discharge. Standard, but due to the high proportion of waste cutting fluid in the pre-treated sewage, it will affect the treatment efficiency and treatment effect of the subsequent process

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