Thermal power plant desulfurization wastewater discharge treatment process

By adjusting the pH value through a pretreatment system, adding coagulants and coagulant aids to form flocs for separation, softening treatment to form precipitates, filtering and separating using a membrane concentration system, and finally treating the concentrated brine through evaporation crystallization or flue gas atomization evaporation, the problem of long process routes, high costs, and large land occupation in the treatment of desulfurization wastewater in thermal power plants is solved, achieving efficient treatment and resource recycling.

CN121085482AActive Publication Date: 2025-12-09BAODE FENGYE ENVIRONMENTAL PROTECTION TECH CO LTD
5 Cites 0 Cited by

Patent Information

Application Number
CN202511434621.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-09
Publication Date
2025-12-09
Estimated Expiration
2045-10-09

AI Technical Summary

Technical Problem

Existing desulfurization wastewater treatment processes in thermal power plants are lengthy, involve numerous equipment, are costly, and require large sites, making it difficult to meet environmental and economic requirements.

Method used

The pretreatment system adjusts the pH value, adds coagulants and coagulants to form flocs for separation, softens the brine to form precipitates, filters and separates the brine using a membrane concentration system, and finally treats the concentrated brine by evaporation crystallization or flue gas atomization evaporation.

Benefits of technology

Shorten the process route, reduce the number of equipment, lower processing costs and site occupancy, and achieve efficient removal of impurities and pollutants to meet emission or recycling standards.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a thermal power plant desulfurization wastewater discharge treatment process, which belongs to the technical field of wastewater treatment, solves the problems of difficult colloidal substance removal, long process route and high treatment cost in the prior art, and comprises the following steps: introducing to-be-treated wastewater into a pretreatment system, adjusting the pH value of the wastewater through the pretreatment system, sequentially adding a coagulant and a coagulant aid to enable suspended solids and colloidal substances in the wastewater to form larger alumen ustum, separating the alumen ustum, introducing the separated alumen ustum into a softening treatment system to obtain softened water, introducing the softened water into a membrane concentration system to generate clear liquid reaching the standard and concentrated saline water, and introducing the concentrated saline water into an evaporative crystallization system or a flue atomization evaporation system. The pH value of the wastewater is adjusted through the pretreatment system, the coagulant and the coagulant aid are added to form alumen ustum, suspended solids and colloidal substances in the wastewater are separated and removed, concentrated saline water is treated through the evaporative crystallization system or the flue atomization evaporation system, the process route is simplified, and the treatment cost is reduced.
Need to check novelty before this filing date? Find Prior Art