Integral anaerobic film-biologic reactor-natural ventilating biologic filter pool sewage treating technique
A bioreactor, natural ventilation technology, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc. Dealing with problems such as effect, to achieve the effect of reducing floor space, preventing loss, and improving effect
Inactive Publication Date: 2007-09-19
TONGJI UNIV
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Problems solved by technology
Naturally ventilated biofilters have the lowest energy consumption. However, in actual use, naturally ventilated biofilters have low hydraulic loads. The excessive growth of heterotrophic microorganisms in the medium will block the filter, affecting the normal operation of the filter and the water treatment effect
Method used
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Embodiment
[0017] The water volume of urban sewage treatment is 50t / d, and the concentration of pollutants in the influent of anaerobic membrane-bioreactor: COD 400mg / L, NH 3 -N 40mg / L, the COD of the effluent after treatment by anaerobic membrane-bioreactor is reduced to about 80mg / L, while NH 3 -N rises to about 45mg / L, and then enters the natural ventilation biofilter for treatment, and the treated effluent COD, NH 3 -N and total phosphorus were 38mg / L, 6.8mg / L and 0.8mg / L respectively, and effluent nitrite and nitrate were 17.8mg / L and 15.3mg / L respectively.
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A one-piece anaerobic membrane-bioreactor-natural ventilation biological filter sewage treatment process relates to the multicity sewage treatment technology and is used for multicity sewage treatment and the treatment of organic waste water which has the similar water property with municipal sewage. The present invention comprises a one-piece anaerobic membrane-bioreactor (1), a suction pump (2), and a natural ventilation biological filter (3). The municipal sewage is firstly treated in the one-piece anaerobic membrane-bioreactor (1), here, chemical dephosphorization agent is added into the one-piece anaerobic membrane-bioreactor (1), and the contamination to the membrane can be reduced at the same time; then the municipal sewage is put into the natural ventilation biological filter (3) by means of the suction pump (2) or the action of water head, wherein the residual organic contaminant and ammonia nitrogen are removed. The present invention has the advantages of that: the floor space is small, any manually strengthened mechanical aeration equipment is not needed, the energy consumption is small, the sludge productivity is low, the effluent water has a good water property and the investment cost and actual operating cost are greatly reduced.
Description
technical field [0001] The integrated anaerobic membrane-bioreactor-natural ventilation biofilter sewage treatment process relates to urban sewage treatment technology and is used for urban sewage treatment and industrial organic wastewater treatment with water properties similar to urban sewage. technical background [0002] For urban sewage treatment, aerobic secondary biological treatment or biological nitrogen and phosphorus removal processes including aerobic aeration are generally used in my country at present. These conventional biological treatment processes generally have problems such as complex process, large land occupation, high infrastructure costs and operating energy consumption, high sludge yield (0.29-0.38kgVSS / kgCOD), large sludge treatment investment and treatment costs, and operating costs. It is about 0.46 yuan / ton of sewage, which makes it difficult for many small and medium-sized cities with relatively backward economic development to raise funds for ...
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IPC IPC(8): C02F3/30C02F3/10C02F1/44
CPCY02W10/10
Inventor 吴志超周振田陆梅王旭
Owner TONGJI UNIV