Air-flotation aeration-type biofilter treatment system
A biofilter and treatment system technology, applied in the field of air flotation aerated biofilter treatment system, can solve the problems of consuming large backwash water, affecting the biofilm of the filter material, forming channel flow of the filter material, etc., and improving the efficiency of the process. Water quality, increase content, improve the effect of removal effect
Active Publication Date: 2014-04-02
CHINA PETROLEUM & CHEM CORP +1
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[0003] However, it has strict requirements on the SS of the influent (generally SS≤100mg / L, preferably SS≤60mg / L), so the influent needs to be pretreated. At the same time, once the SS is too high, it will cause fouling of the filter material. Channeling may form inside the filter material, and frequent backwashing will not only consume a lot of backwashing water, but also affect the biofilm on the filter material, thereby affecting the treatment effect
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[0014] Such as figure 1 As mentioned above, the air flotation aerated biological filter system of the present invention mainly includes a pressurized dissolved air flotation aeration system 20 , a biological filter system 30 and a mud scraping system 40 . The pressurized dissolved air flotation aeration system 20 mainly includes an air compressor 1, a dissolved air tank 2, and a dissolved air releaser 3, etc. The sewage and gas to be treated enter the dissolved air tank 2 through the water inlet pipe 8 and the air inlet pipe 9 respectively, and a certain pressure is maintained in the dissolved air tank 2, so that a large amount of air is dissolved in the incoming water to form dissolved air water, and the dissolved air water passes through the dissolved air tank. The air release device 3 enters the dissolved air water distribution pipe 4 of the biofilter, and the dissolved air in the dissolved air water is released in the upward flow of the dissolved air water, and floats up t...
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The invention discloses an air-flotation aeration-type biofilter treatment system. The biofilter treatment system mainly comprises three parts, namely mainly comprises a pressurized dissolved air flotation aeration system, a biofilter system and a sludge scraping system. An aeration system of the biofilter is replaced by the pressurized dissolved air flotation aeration system. Water distribution pipes are replaced by air-dissolved water distribution pipes and the sludge scraping system is added. The biofilter treatment system is capable of increasing the aeration efficiency at the same time of reducing inflow suspension and a little amount of oil, and has characteristics of low backflushing frequency, large dissolved oxygen amount, and the like. The biofilter treatment system solves technical problems of high requirements for the inflow suspension, low aeration efficiency, and the like of biofilters at present. The biofilter treatment system is used for the field of sewage treatment, and can replace the aeration biofilters at present and pretreatment systems used for reducing the suspension of the aeration biofilters at present.
Description
technical field [0001] The invention relates to a biological filter treatment system, in particular to an air flotation aeration type biological filter treatment system. Background technique [0002] Compared with the ordinary activated sludge method, the biological aerated filter has the advantages of easy cultivation of biofilm, reasonable distribution of microorganisms, short residence time, strong processing capacity, low energy consumption, high nitrification efficiency, less sludge output, and no odor during the treatment process. It does not produce sludge bulking, occupies a small area, and does not need to set up a secondary settling tank for the effluent, so it is valued in sewage treatment. [0003] However, it has strict requirements on the SS of the influent (generally SS≤100mg / L, preferably SS≤60mg / L), so the influent needs to be pretreated. At the same time, once the SS is too high, it will cause fouling of the filter material. Channeling may form inside the ...
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IPC IPC(8): C02F3/02
CPCY02W10/10
Inventor 赵辉刘正龚小芝
Owner CHINA PETROLEUM & CHEM CORP