Desulfurization wastewater recycling and utilizing process and device

Abstract

The invention discloses a desulfurization wastewater recycling and utilizing process and a desulfurization wastewater recycling and utilizing process device. The device comprises a wastewater treatment system and a collaborative removal system; the wastewater treatment system comprises a wastewater treatment pond and an additive adding system; the collaborative removal system comprises a collaborative removal tower; the collaborative removal tower is a vertically through tubular cavity; spraying equipment is arranged at the top of the collaborative removal tower; an opening in the bottom of the collaborative removal tower is connected with a flue gas outlet of an air pre-heater; an opening in the top of the collaborative removal tower is connected with a gas inlet of a dust removal device; a dust discharging opening of the dust removal device is connected with a dust conveying system; an exhaust opening of the dust removal collector is connected with a wet desulfurization system; an exhaust opening of the wet desulfurization system is connected with a chimney; a waste liquid outlet of the wet desulfurization system is connected with the wastewater treatment pond; the additive adding system is connected with the wastewater treatment pond; a water outlet of the wastewater treatment pond is connected with the spraying equipment through a wastewater pump. According to the desulfurization wastewater recycling and utilizing process and the desulfurization wastewater recycling and utilizing process device, the treatment disposal problems of desulfurization wastewater are solved; zero emission of the wastewater is realized; wastewater resources are realized.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a desulfurization wastewater recycling process and device. Background technique [0002] With the increasingly stringent national environmental protection policies, most thermal power plants have installed wastewater treatment facilities, and the types of wastewater treated mainly include production wastewater and domestic wastewater. For thermal power units using wet desulfurization technology, the desulfurization wastewater in the production wastewater accounts for a considerable proportion of the total wastewater discharge. Desulfurization wastewater contains a large number of impurities, such as suspended solids, inorganic salt ions, heavy metal ions, etc. The prior art is to purify the desulfurization wastewater and adjust it to be neutral before discharging it into the water body, but there is still a great potential pollution. [0003] In recent years, the e...

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Problems solved by technology

[0006] Aiming at the deficiencies of the existing desulfurization wastewater treatment technology, the present invention develops a process and d

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