Hospital sewage comprehensive treatment system

Abstract

The invention relates to a hospital sewage comprehensive treatment system which comprises a first water collecting well, a second water collecting well and a grid water collecting well. High-salt andhigh-acid wastewater is converged into the sealed first water collecting well; other production wastewater and waste gas treatment wastewater are converged into the sealed second water collecting well; domestic sewage is converged into the grid water collecting well together with other wastewater through a grid; and a neutralization reaction tank, a plate-and-frame filter press, an intermediate water tank, evaporation and concentration equipment, a Fenton reactor, a flocculation sedimentation tank, a regulating tank, a two-stage anaerobic tank, a contact oxidation tank, a secondary sedimentation tank, a sludge storage tank and a plate-and-frame filter press are sequentially connected. According to the hospital sewage comprehensive treatment system, evaporation and concentration are adoptedto reduce salt, a Fenton reagent oxidation method is adopted to reduce CODcr and improve the biodegradability of the wastewater, the pretreated production wastewater is mixed with other wastewater and then treated with an anaerobic and aerobic biotechnology, and effluent is discharged after reaching the standard.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a hospital sewage comprehensive treatment system. Background technique [0002] With the progress of human civilization and the development of social economy, human beings have gradually realized the importance of environmental protection in promoting social progress and sustainable, stable and coordinated economic development. The environmental protection work has been widely concerned and valued by the society, and the construction of the sewage treatment system is a concrete action to implement this work. [0003] Wastewater to be treated in hospitals can be divided into three categories, namely: high-salt and high-acid wastewater, high-COD wastewater, domestic sewage and other wastewater, production wastewater with high COD concentration, BOD 5 / CODcr is very low, the biodegradability is poor, and it is difficult to directly biodegrade. Specifically, the c...

AI Technical Summary

Problems solved by technology

Specifically, the concentration of salt in the wastewater is high, and the salt mainly exists in the form of sulfate, bromate, and hydrochloride; the organic matter is mainly toluene, aniline, etc., and the biodegradability is poor, and the CODcr and salt concentration of the production wastewater are very high. High, poor biodegradability of wastewater, and high salt concentration has a great impact on biochemical treatment

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