Waste water treatment system for coal-fired power plant

Abstract

The invention discloses a waste water treatment system for a coal-fired power plant. The system comprises a collecting module, a desulfurization module, a slag water module and a slag fishing module, wherein a water draining tube of the collecting module is connected with a water inlet tube of the desulfurization module; a water draining tube of the desulfurization module is connected with a water inlet tube of the slag water module; the slag water module is connected with the slag fishing module; the collecting module is used for acquiring first waste water generated during running of the coal-fired power plant and delivering the first waste water to the desulfurization module; the desulfurization module is used for carrying out desulfurization treatment on the first waste water; the slag water module is used for washing waste slag by second waste water discharged from the desulfurization module and evaporating the second waste water; and the slag fishing module is used for fishing the waste slag in the slag water module. Thus, the waste water treatment system for the coal-fired power plant takes the waste water as replenished water of the desulfurization module and the slag water module, and by modes of desulfurization, slag washing, evaporating, slag fishing and the like, zero emission of the waste water of the coal-fired power plant is realized simply and really.

Description

technical field [0001] The invention relates to the technical field of factory water resource analysis and treatment, in particular to a coal-fired power plant wastewater treatment system. Background technique [0002] In recent years, in order to increase the intensity of water pollution prevention and control, the state has promulgated a series of relevant laws, regulations and policy documents on water pollution prevention and control. In real life, coal-fired power plants, etc., as large users of water and drainage, need to actively respond to relevant laws, regulations and policy documents that comply with water pollution prevention and control. [0003] Generally speaking, according to the regulations, there are basically no sewage outlets for newly built coal-fired power plants during the environmental assessment of infrastructure construction. The environmental protection department of old coal-fired power plants also hopes to reduce as much as possible or preferably...

AI Technical Summary

Problems solved by technology

[0004] However, the inventor found through research that directly discharging the most difficult wastewater does not comply with the relevant laws, regulations and policy documents on water pollution prevention and control promulgated by the state; Corresponding equipment needs to be used, and the purchase and operation costs of these equipment are very high, and the operation and maintenance of the equipment is complicated, so it is not suitable for universal use in all coal-fired power plants

That is to say, wastewater with high salt content and suspended solids is still difficult to be treated simply and effectively, so that it is impossible to universally, simply and truly realize zero discharge of wastewater from coal-fired power plants

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