Treatment method and treatment system for methane chloride cleaning wastewater and waste alkali of incineration system

Through metal catalytic reduction dechlorination technology and three-effect evaporation and biochemical treatment technology, the problem of waste alkali treatment of methane chloride cleaning wastewater and incineration system has been solved, efficient dechlorination and organic matter removal have been achieved, the concentration of harmful substances has been reduced, and the resource utilization of wastewater has been promoted.

CN119683823AInactive Publication Date: 2025-03-25SHANDONG DONGYUE FLUO SILICON MATERIALS CO LTD
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Patent Information

Application Number
CN202510195230.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The prior art is difficult to effectively treat methane chloride cleaning wastewater and incineration system waste alkali, especially difficult to remove organic and inorganic chlorine, and has low treatment efficiency and poses ecological and health hazards.

Method used

Using metal catalytic reduction and dechlorination technology, cast iron powder and sodium sulfate are added to methane chloride cleaning wastewater to carry out reaction dechlorination under acidic conditions. Then, through neutralization coagulation treatment and three-effect evaporation technology, suspended matter and colloidal substances are further removed, and the resource utilization of wastewater is achieved through biochemical unit treatment.

Benefits of technology

Effective dechlorination and organic removal of waste alkali in methane chloride cleaning wastewater and incineration system are achieved, the concentration of harmful substances is reduced, the treatment efficiency is improved, and the resource utilization of wastewater is realized.

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Abstract

The invention relates to the technical field of three-waste treatment, in particular to a treatment method and treatment system for methane chloride cleaning wastewater and waste alkali of an incineration system.The treatment method comprises the following steps that S1, metal catalytic reduction dechlorination is conducted, a reducing agent and a catalyst solution are added into the methane chloride cleaning wastewater, and a first intermediate solution is obtained after reaction dechlorination; s2, neutralization and coagulation: adding waste alkali of an incineration system and a coagulant into the first intermediate liquid prepared in the step S1 to obtain a second intermediate liquid; s3, introducing the second intermediate liquid prepared in the step S2 into a triple-effect evaporation device, introducing condensed water generated by the triple-effect evaporation device into a biochemical unit, and discharging after the condensed water is treated by the biochemical unit; and carrying out vacuum suction filtration on solutes generated in the triple-effect evaporation device, returning wastewater obtained by suction filtration to the triple-effect evaporator for continuous treatment, carrying out drying treatment on the solutes with less water content obtained by suction filtration, carrying out harmless treatment on dried solid powder, and discharging. And the wastewater and the waste alkali of the incineration system are well treated at the same time.
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