A waste water treatment device based on wet desulfurization system

Abstract

The invention discloses a wastewater treatment device based on a wet desulphurization system. The wastewater treatment device comprises a gypsum hydrocyclone station, a recycling water tank, a vacuum belt fulter, a filtrate water defecator, a filtrate water clean-water tank, a limestone slurry circulating tank, a main system on desulfurization waste water treatment, a pressure filter, an outer-drainage treating system and a desulfurizing absorption tower. Upper-layer clean water coming out from the gypsum hydrocyclone station flows into the recycling water tank, the recycling water tank is connected with two branches of pipelines, one branch of recycling water is sent to the desulfurizing absorption tower, and the other branch of recycling water is sent to the limestone slurry circulating tank; the lower-layer wastewater coming out from the filtrate water defecator enters into the vacuum belt fulter, the filtrate passing through the vacuum belt fulter enters into the filtrate water defecator, and wet electric wastewater and gas-flue hydrophobic are also enter into the filtrate water defecator at the same tine. The wastewater treatment device based on the wet desulphurization system has the advantages that the pollution of the wastewater is decreased, and water consumption is lowered; the adaptability and the stability are good; the technological process is easy, and investment and cost on operation and maintenance are low; the effect of the filtrate water defecator is good.

Description

technical field [0001] The invention relates to a waste water treatment device, more specifically, it relates to a waste water treatment device based on a wet desulfurization system. Background technique [0002] At present, in order to meet more stringent environmental protection requirements, many coal-fired power plants have installed wet electrostatic precipitator systems (hereinafter referred to as wet electricity) behind the desulfurization absorption towers. Wet electricity requires a large amount of flushing water. After washing the plates, this part of the flushing water flows out from the ash hopper, part of which is recycled, and part of it is discharged as wet electricity wastewater. This part of wastewater contains more suspended solids (generally the concentration is between 2000-4000mg / L), and the pH value is between 4-6, so it cannot be used directly. If it is discharged into the wastewater system of other devices, it will inevitably increase pollution, incr...

AI Technical Summary

Problems solved by technology

This part of the wastewater contains more suspended solids (generally between 2000-4000mg / L), and the pH value is between 4-6, so it cannot be directly used

If it is discharged into the wastewater system of other devices, it will inevitably increase pollution, increase water consumption, and destroy the water balance of other equipment, affecting the operation of equipment

Images