Method for filtering breeding waste water through straw powder
A technology for breeding wastewater and straw powder, which is applied in chemical instruments and methods, animal husbandry wastewater treatment and application, etc., can solve the problems of high treatment cost of high-concentration aquaculture wastewater, difficult practical application of technology, etc., and achieves low operating cost and low operating energy. Low consumption effect
Inactive Publication Date: 2015-04-22
NORTHEAST AGRICULTURAL UNIVERSITY
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[0003] The purpose of the present invention is to address the problems in the above-mentioned prior art, and to design and provide a method for filtering aquaculture wastewater by using straw powder, so as to solve the problems of high treatment cost of high-concentration aquaculture wastewater and difficult practical application of the technology
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[0007] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. A method for filtering aquaculture wastewater by using straw powder, the method is as follows: firstly crush corn stalks into straw powders of three different particle sizes of 20mm, 10mm, and 5mm, and use the straw powders of three different particle sizes to respectively construct three filter layers, Wherein the thickness of the filter layer of 20mm particle size is 200-300mm, the thickness of the filter layer of 10mm particle size is 100-150mm, the thickness of the filter layer of 5mm particle size is 50-80mm, and the total solid content mass percentage is 1-5%, COD cr After the 5000-15000 mg / L aquaculture wastewater is filtered through three layers of straw powder filter layers in sequence, the total solid content of the aquaculture wastewater is reduced to 04-06%, and the COD cr Between 1000-5000mg / L, aerobic aeration treatment is used to complete ...
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The invention discloses a method for filtering breeding waste water through straw powder, and belongs to the technology of breeding waste water processing. The method includes the steps that maize straw is smashed into the straw powder with the three different grain sizes including 20 mm, 10 mm and 5 mm, and three different filtering layers are built through the straw powder different in grain size respectively, wherein the thickness of the filtering layer which is 20 mm in grain size ranges from 200 mm to 300 mm, the thickness of the filtering layer which is 10 mm in grain size ranges from 100 mm to 150 mm, and the thickness of the filtering layer which is 5 mm in grain size ranges from 50 mm to 80 mm; after adsorbed and filtered through the three straw powder layers, the breeding waste water is processed in an aerobic aeration mode, and standard-met discharging processing or recycling of the breeding waste water is completed. By means of the method, agriculture and animal husbandry organic waste is comprehensively used, and the method has the advantages of being low in cost and low in operation energy consumption.
Description
technical field [0001] The invention belongs to aquaculture wastewater treatment technology, and mainly relates to a method for filtering aquaculture wastewater by using straw powder. Background technique [0002] At present, the harmless treatment of livestock and poultry breeding wastewater is a major problem in the development of animal husbandry. For high-concentration aquaculture wastewater with COD between 5000-15000mg / l, the currently widely used treatment method comes from sewage treatment technology, and the mainstream is anaerobic fermentation combined with aerobic aeration treatment method. The main problem is: influent concentration And the organic load should not be too high. If the organic load is too high, it will lead to biofilm blockage, long hydraulic retention time, and low treatment efficiency. Even if it is in normal operation, the cost of aquaculture sewage treatment will reach 8-10 yuan / t. This technology is difficult to practice operation, farming po...
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IPC IPC(8): C02F9/14
CPCC02F1/286C02F3/02C02F9/00C02F2103/20C05F3/00
Inventor 关正军范金霞杨一盈王珊
Owner NORTHEAST AGRICULTURAL UNIVERSITY