Intermittent aeration and biochemical nitrogen and phosphorus removal treatment system
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A technology for denitrification and phosphorus removal and treatment system, which is applied in the field of intermittent aeration biochemical denitrification and phosphorus removal treatment system. problem, to achieve the effect of strong resistance to salt substances, low cost, and improved biodegradability
Inactive Publication Date: 2018-03-06
KOOVINE ENVIRONMENTAL PROTECTION TECH CO LTD
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At present, most of the research on coal gasification wastewater treatment technology stays in the small-scale experimental stage. Most scholars are only conducting research on the application of a single technology, and there are few studies on the coupling process of physicochemical treatment and biochemical treatment.
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Embodiment 1~4
[0053] Embodiments 1 to 4: An intermittent aeration biochemical denitrification and phosphorus removal treatment system, including a catalytic oxidation tank 1, an oxidation stabilization tank 2, a post-biochemical BAF tank 3 and a clean water tank 4 connected sequentially through a transmission pipeline 5, and a lifting The pump 6 is connected to the inside of the catalytic oxidation tank 1 through the water inlet pipeline 7, and an ozone generator 8 is connected to the inside of the catalytic oxidation tank 1 through the gas pipeline 9. The clean water tank 4 is provided with a water inlet 41, a water outlet 42 and a return hole 43, the water inlet hole 41 of the clean water pool 4 is connected to the post-biochemical BAF pool 3 through the transmission pipeline 5, and the backflow hole 43 of the clean water pool 4 is connected to one end of a backwash pump 11 through the backflow pipeline 10, and the backwash The other end of the pump 11 is connected to the catalytic oxidati...
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Abstract
The invention discloses an intermittent aeration and biochemical nitrogen and phosphorus removal treatment system. A catalytic oxidation tank of the device is filled with ozone catalysis particles inthe form of a fixed bed, and the ozone catalysis particles are prepared from, by weight, activated alumina particles, copper oxide, titanium dioxide, polyethylene glycol and polyvinyl alcohol. Post-biochemical BAF tanks also include an anaerobic tank and an aerobiotic tank, a lower screening plate and an upper screening plate are installed at the lower portion and the upper portion of the aerobiotic tank respectively, a carrier is prepared from, by weight, high-density polyethylene resin, low-density polyethylene, bamboo charcoal powder, wood powder, lignin, methylene dichloride, diethyl guanidine sulfate, N,N'-ethylene bis-stearamide, maleic anhydride, dicumyl peroxide, gelatin, magnetic powder and pentaerythritol stearate. The intermittent aeration and biochemical nitrogen and phosphorusremoval treatment system achieves wastewater COD removal, decolorization, deodorization and degradation of toxic pollutants in the catalytic oxidation treatment process of sewage in the coal chemicalindustry.
Description
technical field [0001] The invention relates to an intermittent aeration biochemical nitrogen and phosphorus removal treatment system, which belongs to the technical field of sewage nitrogen and phosphorus removal. Background technique [0002] Most coal gasification plants in China adopt the Lurgi gas production process. The waste water pollutants produced by this process have a high concentration and complex organic components, mainly including phenolic compounds, polycyclic aromatic compounds, and heterocyclic compounds containing nitrogen, oxygen, and sulfur. Compounds and fatty compounds are highly toxic and difficult to biodegrade. If the coal-to-gas wastewater is not properly treated and discharged beyond the standard, it will cause serious pollution to the ecological environment. Therefore, how to effectively treat the coal-to-gas wastewater and achieve wastewater discharge standards has become an international problem. [0003] At present, high concentrations of am...
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