Efficient oil-water separation waste liquid treatment method

Abstract

The invention provides an efficient oil-water separation waste liquid treatment method, which comprises the following steps: after being produced in the production process, the waste liquid is guided and conveyed into a collection container through a pipeline, the waste liquid slowly flows in the collection container to stand, solid particles sink to the bottom when the waste liquid is in the standing state, oily liquid floats to the top layer, the left middle part is an aqueous solution, the oily liquid on the top layer is independently guided, discharged and concentrated, the aqueous solution on the middle layer is guided into a circulating purification device, the water content of the aqueous solution is larger than or equal to 85%, the mass ratio of solid particles is smaller than or equal to 5%, the mass ratio of the oily liquid is smaller than or equal to 10%, the aqueous solution generates purified water in the circulating purification device, the rest part is circularly filtered, and the final high-concentration waste liquid is intensively collected. According to the scheme, the filtering effect of the waste liquid is improved by adopting a mode of early-stage standing and circulating purification.

Description

technical field [0001] The invention relates to a high-efficiency recovery and treatment device for waste liquid in the production and processing process, in particular to a treatment method for high-efficiency oil-water separation waste liquid. Background technique [0002] Metalworking fluid is a functional liquid used in the metalworking process. The waste of the processing fluid produced after use is waste liquid. The composition of the waste liquid is complex, and there are many types of metalworking fluids. Lubricating and cooling, as well as anti-rust cleaning and other functions. General metalworking fluids include cutting fluids, cutting oils, stamping oils, quenching agents, high temperature oils, extreme pressure cutting fluids, grinding fluids, antirust oils, cleaning agents, etc. The impurity composition in the metal is complex, mainly containing metal particles and other impurity particles, and will dissolve some inorganic salt impurities. In order to reduce t...

AI Technical Summary

Problems solved by technology

General metalworking fluids include cutting fluids, cutting oils, stamping oils, quenching agents, high temperature oils, extreme pressure cutting fluids, grinding fluids, antirust oils, cleaning agents, etc. The impurity composition in the metal is complex, mainly containing metal particles and other impurity particles, and will dissolve some inorganic salt impurities. In order to reduce the oxidation and rust in the metal processing process, the metal processing fluid is usually made into an emulsion, and it will be used during use. Add water to dilute, so the post-treatment of metal processing waste liquid is more difficult. Usually, if waste liquid needs to be processed, it needs to be concentrated and then sent to a special processing institution for processing. The cost of storage and transportation is high, and there are additional costs. The cost of the treatment is relatively high for the enterprise. In order to reduce the cost of maintenance in the later period, it is necessary for the enterprise to adopt certain technical improvements to discharge the waste liquid to a certain extent, so as to reduce the post-treatment cost and reduce environmental pollution. Provide assistance for the technological upgrading and development of enterprises

Images