Combined type SBR (Sequencing Batch Reactor)-MBR (Membrane Bioreactor)-Fenton pig-raising wastewater treatment method

Abstract

The invention relates to a combined type SBR (Sequencing Batch Reactor)-MBR (Membrane Bioreactor)-Fenton pig-raising wastewater treatment method. The combined type SBR-MBR-Fenton pig-raising wastewater treatment method comprises the following steps: intercepting residues through a grid, collecting and blending through a water collection pond, carrying out solid-liquid separation, carrying out anaerobic fermentation in a black film biogas pond, carrying out SBR reaction tank, MBR reaction tank and Fenton deep oxidization treatment and the like; the removing rate of COD (Chemical Oxygen Demand)of treated wastewater is greater than 99.5 percent, the removing rate of BOD (Biochemical Oxygen Demand) is greater than 99.5 percent, the removing rate of SS (suspended solids) is greater than 99.9 percent, the removing rate of ammonia nitrogen is greater than 99 percent, the removing rate of total phosphorus is greater than 99.5 percent, the removing rate of chroma is greater than 98 percent andthe effluent water quality of the wastewater reaches first-grade standards of Comprehensive Wastewater Discharge Standards. According to the combined type SBR-MBR-Fenton pig-raising wastewater treatment method, SBR, MBR and Fenton are combined, and an SBR-MBR membrane biological reaction system and an integrated Fenton oxidization device, which are innovatively designed, are combined and are applied to treatment of the pig-raising wastewater; the construction investment is 20 percent or more than the construction investment of an existing treatment method, the construction period is shortenedby half the time and the operation cost is reduced by 50 percent or more, so that the combined type SBR-MBR-Fenton pig-raising wastewater treatment method has remarkable technological economic benefits.

Description

technical field [0001] The invention relates to a combined SBR-MBR-Fenton pig raising wastewater treatment method, specifically belonging to the technical field of wastewater treatment. Background technique [0002] Pig wastewater contains a large amount of dung, pig hair, cellulose and other complex components, and has the characteristics of high suspended solids (SS), high COD, high ammonia nitrogen, large chroma, and large changes in water quality and quantity. According to the different methods of manure cleaning in pig farms, pig raising wastewater can be divided into: artificial dry manure cleaning wastewater, mechanical manure scraping wastewater, water flushing manure wastewater, blister manure wastewater, and mechanical manure scraping and water soak manure combined manure cleaning wastewater. Existing wastewater treatment methods generally adopt advanced treatment methods such as pretreatment + anaerobic treatment + A / O or SBR biochemical treatment + MBR / ozone oxid...

AI Technical Summary

Problems solved by technology

However, in the MBR membrane bioreactor in the additional treatment facility, the sludge concentration is high, the impurities are large, and the membrane is easy to block, and the service life is less than one year. Also less than a year, RO membrane replacement cost is high, and the RO membrane treatment method has the problem of the whereabouts of concentrated water, which needs to be treated separately, which doubles the operating cost and is difficult for the owner to bear. Sorry" situation is very common

[0004] The patent application No. 201110353739.7 reports a treatment method for high-acid crude oil electric desalination wastewater, which involves the combined process of SBR, MBR, and Fenton, but it is applied to the treatment of electric desalination wastewater in oil refineries, and the treatment of electric desalination wastewater in oil refineries and aquaculture Wastewater has essential differences in wastewater components and pollution indicators, and it does not propose clear parameters and treatment effects for aquaculture wastewater

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