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Comprehensive treatment process of desulfuration waste water

A desulfurization wastewater and comprehensive treatment technology, which is applied in water/sewage treatment, dehydration/drying/concentrated sludge treatment, neutralized water/sewage treatment, etc., can solve the problems of large maintenance, exceeding the standard, and low utilization rate of equipment. Achieve the effect of small maintenance workload and low process energy consumption

Inactive Publication Date: 2012-07-04
常州江南电力环境工程有限公司
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Problems solved by technology

However, there are many technological deficiencies and equipment incompatibility problems in the existing desulfurization wastewater process: for example, there is no sludge treatment device in the wastewater treatment process, excessive power consumption in the process flow, and improper selection of equipment or materials. The actual service life is short, the utilization rate of the device is low, the amount of maintenance is large, and the system lacks a dosing system for heavy metal scavenger, which causes heavy metals in the effluent to exceed the standard, etc.

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  • Comprehensive treatment process of desulfuration waste water
  • Comprehensive treatment process of desulfuration waste water
  • Comprehensive treatment process of desulfuration waste water

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Embodiment Construction

[0020] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0021] Such as Figure 1~3 As shown, a comprehensive treatment process for desulfurization wastewater, the process steps are as follows:

[0022] 1) Collection and buffering of waste water: the incoming water of desulfurization waste water enters the desulfurization waste water raw water tank 1, and the waste water raw water tank is equipped with a raw water tank agitator 2 to prevent sedimentation;

[0023] 2) Lime treatment by chemical method: After being lifted by the wastewater lifting pump 3, the wastewater enters the neutralization tank 4 from the raw water tank 1, and Ca(OH) with a mass concentration of 5%-10% is added to the neutralization tank 4 2 Solution, set the online PH meter, and control the pH value in the box to 9.2-9.8, mainly to...

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Abstract

The invention discloses a comprehensive treatment process of desulfuration waste water. The process steps include: (1) collecting and buffering of waste water; (2) lime treatment by means of a chemical method; (3) heavy metal removing; (4) coagulation treatment of suspended matter; (5) sediment treating of the suspended matter; and (6) dehydrating treatment of sludge. The comprehensive treatment process can not only treat various pollution factors in the waste water but also reduce energy consumption.

Description

technical field [0001] The invention relates to the field of environmental protection and wastewater treatment, in particular to a comprehensive treatment process for desulfurization wastewater, which is used to treat various pollution factors of desulfurization wastewater, namely high suspended solids, heavy metals, acidity and by-product sludge, etc. Background technique [0002] At present, wet flue gas desulfurization (limestone / gypsum method, referred to as FGD), as the desulfurization process with the most mature technology, the highest desulfurization actual operation efficiency and the most widely used in the world, is widely used in coal-fired desulfurization systems. The FGD system must discharge a certain amount of wastewater from the desulfurization system, that is, desulfurization wastewater, in order to maintain the balance of substances in the slurry circulation system of the desulfurization device, prevent the soluble part of the flue gas, that is, the chlorin...

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Application Information

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IPC IPC(8): C02F9/04C02F11/12C02F1/66C02F1/62C02F1/56
Inventor 沈韬盛小丽胡海华
Owner 常州江南电力环境工程有限公司
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