Low-temperature evaporation treatment method and treatment apparatus for industrial effluent

Abstract

The invention relates to a low-temperature evaporation treatment method and treatment apparatus for industrial effluent. The low-temperature evaporation treatment method comprises the following steps: step 1, pretreatment; step 2, cyclic evaporation of the industrial effluent; step 3, high-voltage narrow-pulse electro discharge treatment; step 4, salt formation and recovery; step 5, condensation of exhaust gas; and step 6, discharging of the exhaust gas. The invention also provides the apparatus for treating the industrial effluent by using the low-temperature evaporation treatment method. The apparatus comprises a pretreatment system, a low-temperature evaporation system, a direct-current high-voltage narrow-pulse discharge system, a chemical washing tower, a steam condenser and an exhausting system which are successively connected. The treatment method and treatment apparatus provided by the invention have the advantages that the treatment method and treatment apparatus can treat a wide variety of effluent and waste water; treatment can be carried out according to difference of components of effluent, and only a small amount of solid residues are produced after treatment; operation cost is low; toxic substances like dioxin are not produced; and treatment method and treatment apparatus are especially applicable to treatment of high-concentration, highly-contaminated and hardly-biodegradable organic effluent and waste water and to treatment of chemical effluent, medicinal effluent, pesticide effluent and garbage leachate.

Description

technical field [0001] The invention relates to the field of industrial waste liquid treatment, in particular to a low-temperature evaporation treatment method and a treatment device for industrial waste liquid with high concentration, heavy pollution and refractory degradation. Background technique [0002] In the production process of industrial enterprises, according to the production process and requirements, waste liquid is often produced in different processes or when producing different products. If the waste liquid generated in the same process or in the production of the same product can be strictly controlled and differentiated, it can The composition is stable, and subsequent processing will be easier. However, at present, due to various reasons, it is difficult for most enterprises to strictly distinguish or classify the waste liquids they produce, but they will mix them together and discharge them into a certain waste liquid pool (sometimes even if the same proc...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing problems, the present invention aims to provide a low-temperature evaporation treatment method and treatment device for industrial waste liquid

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