Desulfurization wastewater treatment process

A technology for desulfurization wastewater and treatment process, applied in the field of environmental protection, can solve the problems of scaling, the equipment does not have the meaning of promotion, and the pretreatment system process is incomplete, and achieves the effects of standardized management, remote real-time supervision, and increased processing difficulty.

Active Publication Date: 2017-09-12
江苏八达科技股份有限公司
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Problems solved by technology

Due to the incomplete process of the pretreatment system, the system has scaling problems, and the chlorine ion content of the system feed water is 3000ppm, which is far from the conventional requirement of desulfurization wastewater chlorine ion content of 10000-20000ppm, so the treatment process system equipment is still not yet available. Does not have the meaning of promotion

Method used

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  • Desulfurization wastewater treatment process

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Embodiment

[0054] The desulfurization wastewater passes through the vertical flow buffer device with reinforced concrete structure, and the desulfurization wastewater is preliminarily precipitated to reduce the sludge treatment load in the subsequent process section, and then undergoes primary electrochemical treatment through the three-dimensional reactor; the three-dimensional reactor is equipped with catalytic electrolytic fillers , The first-level electrochemical treatment of desulfurization wastewater can eliminate part of the acidic substances in the wastewater. In order to enhance the treatment effect, the equipment is equipped with an air stirring device. The residence time of the wastewater in the three-dimensional reactor is not less than 2 hours, and the air volume required by the air stirring device is designed according to the air-water ratio of 15:1. In order to promote full contact between the waste water and the internal packing of the three-dimensional reactor, the device...

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Abstract

The invention discloses a desulfurization wastewater treatment process, which comprises a desulfurization wastewater pretreatment step, a desulfurization wastewater membrane concentration treatment step and a desulfurization wastewater salting-out pretreatment step, wherein the desulfurization wastewater pretreatment step comprises a two-stage electrochemical treatment step and a two-stage softening treatment step, the membrane concentration treatment section is designed into two-stage membrane treatment and comprises a rolled RO device and a mesh pipe type STRO device, and an MVR evaporator and a spray evaporator are combined in the salting-out the treatment section. According to the present invention, any organic agents are not added in the whole process.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a zero-discharge treatment process for desulfurization wastewater. Background technique [0002] Wet flue gas desulfurization technology has been applied and developed in domestic thermal power plants for more than ten years, and has become increasingly mature and stable. The supporting wastewater treatment process still uses the traditional three-box treatment process when flue gas desulfurization technology was introduced. . During the operation of the equipment, due to corrosion, wear and blockage, the failure rate of the system is much higher than that of other systems in the power plant. The desulfurization wastewater system is out of service, and it is common for desulfurization wastewater to be secretly discharged to the ash yard. At present, with the increasingly stringent national environmental protection requirements and increasingly string...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F1/001C02F1/04C02F1/441C02F1/442C02F1/463C02F1/469C02F9/00C02F2301/08
Inventor 周顺明胡学文
Owner 江苏八达科技股份有限公司
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