A chemical sewage advanced treatment system capable of deodorization

Abstract

The invention provides a chemical industrial sewage deep treatment system capable of deodorization. The chemical industrial sewage deep treatment system includes a coarse grille, a lifting pump room, a fine grille, a revolving drum micro-filtration machine, an acid-base regulation tank, a flocculation tank and sedimentation tank, a PVA gelation tank, a sedimentation tank, a membrane-biological reactor, a secondary sedimentation tank, an EV fiber filtering tank, an ultrasonic disinfection tank, an ultraviolet disinfection tank and an effluent lifting pump room, wherein the flocculation tank and sedimentation tank, the sedimentation tank and the secondary sedimentation tank are respectively connected to a sludge concentration tank. An outlet of the sludge concentration tank is connected to a sludge dehydration room; the acid-base regulation tank is connected with a waste gas deodorization device. A flocculation agent includes the following components: alkaline papermaking sludge, sodium sulfite or sodium thiosulfate and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride. By means of the chemical industrial sewage treatment system, water quality can reach or exceed the emission standard of first grade A in 'discharge standard of pollutants in municipal sewage treatment plant' (GB18918-2002), and at the same time, produced exhaust gas can be deodorized.

Description

technical field [0001] The invention relates to a deodorizing chemical sewage advanced treatment system, which belongs to the technical field of sewage treatment. Background technique [0002] The sewage discharge of industrial enterprises in my country is at a relatively high level. The "First National Survey of Pollution Sources" published by the Ministry of Environmental Protection on February 25, 2010 shows that in 2007, the national industrial wastewater production was 73.833 billion tons. The 140,652 sets of industrial wastewater treatment facilities processed about 45.852 billion tons, and the treatment rate was about 62%. The sewage treatment of industrial enterprises has always been the primary problem restricting the development of industrial economy. [0003] In the industrial sewage, the sewage discharge of chemical enterprises accounts for a large proportion. Pharmaceutical sewage belongs to a large category of chemical sewage. Many organic or inorganic chemical...

AI Technical Summary

Problems solved by technology

[0005] In the past, the following treatment process was basically used for sewage treatment: sewage water intake → water intake pump room → primary sedimentation tank → biological reaction tank → secondary sedimentation tank → disinfection tank → drainage, this sewage treatment process cannot fully dispose of Pollutants and impurities in sewage

[0006] At the same time, in the sewage treatment process, before the primary sedimentation tank or biological reaction tank and other steps, the regulating tank is usually used. However, the regulating tank emits a large amount of foul-smelling exhaust gas during the wastewater treatment process, which seriously pollutes the surrounding environment. The main components are H2S, NH3 and other inorganic odorous gases and volatile organic compounds

If these odors are not treated and discharged directly into the air, they will cause serious harm to people's health and environmental protection.

Images