Technology for processing desulfurization wastewater

A technology for desulfurization wastewater and wastewater, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low treatment efficiency, damage to packing, large consumption of chemical agents, etc. , to achieve the effect of improving processing efficiency and reducing settings

Inactive Publication Date: 2014-08-13
WUHAN ZHONGHE & PETER ENG TECH CO LTD
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Problems solved by technology

The treatment efficiency of this kind of technology is not high, the adaptability to the change of influent water quality is poor, and the quality of effluent water is unstable. Among them, the indicators such as heavy metal ion content, COD, turbidity and other i

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  • Technology for processing desulfurization wastewater

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] see figure 1 , in an embodiment of the present invention, a comprehensive treatment process for desulfurization wastewater, including wastewater neutralization, precipitation treatment, primary clarification, secondary clarification, and clean water pH adjustment, and the specific process is as follows:

[0024] (1) Wastewater neutralization: the waste water from the desulfurization system enters the waste water buffer tank 4 through the water inlet pip...

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Abstract

The invention discloses a novel comprehensive processing technology of desulfurization wastewater. The technology comprises the following steps: introducing wastewater from a desulfurization system to a wastewater buffer tank (4) through an inlet pipe (1); lifting the wastewater in the wastewater buffer tank (4) to a neutralizing tank (9) through a lifting pump (3), adding a lime solution into the inlet end of the neutralizing tank (9) through a lime feeding pump (7) to adjust the pH value of the wastewater to around 9.0; and the input end of the lime feeding pump (7) is connected to a lime solution dosing tank (6). The system is provided with a two-stage clarifying device, each stage clarifying device can be individually designed according to the water quality of the inlet water, the surface loading of the two-stage clarifying device can be increased by 20 to 30%, so the two-stage clarifying device is more efficient than that of the conventional single-stage clarifying device.

Description

technical field [0001] The invention relates to a waste water treatment process, in particular to a desulfurization waste water treatment process. Background technique [0002] Desulfurization wastewater is produced in the wet flue gas desulfurization system. The water quality is weakly acidic and contains a large amount of salts and heavy metal ions. The desulfurization wastewater treatment device mainly targets heavy metal ions, fluoride and suspended solids. At present, neutralization tanks, settling tanks and coagulation tanks (commonly known as triple tanks) are generally used for pH adjustment, heavy metal ion reaction and coagulation. Enter the clarification concentrator for clarification treatment, the treated clean water is discharged, and the generated sludge is sent to the dehydration system for dehydration treatment. The treatment efficiency of this kind of technology is not high, the adaptability to the change of influent water quality is poor, and the qual...

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Application Information

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IPC IPC(8): C02F9/04
Inventor 邹向群徐怀兵徐进郑前程朱春雷谢春霞
Owner WUHAN ZHONGHE & PETER ENG TECH CO LTD
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