Biological membrane fluidized bed wastewater treatment method

A wastewater treatment and biofilm technology, which is applied in biological water/sewage treatment, sustainable biological treatment, processing wastewater treatment, etc., to reduce costs, improve wastewater treatment efficiency, and reduce gas flow rates.

Active Publication Date: 2013-04-17
朱勇强
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of improved biofilm fluidized bed waste water treatment method, to overcome the problem that existing biofilm fluidized bed exists

Method used

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  • Biological membrane fluidized bed wastewater treatment method

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Embodiment 1

[0018] Embodiment 1. Treatment of printing and dyeing wastewater. The influent COD is 2000-3000mg / l, the dosage of filler is 0.1% of chemical wood pulp, and the volume load is 3.93kgCOD / m 3 .d, the COD removal rate of printing and dyeing wastewater by this process is 85%-90%.

Embodiment 2

[0019] Embodiment 2, treatment of waste paper deinking wastewater, influent COD is 1500-2000mg / l, filler dosage is chemical wood pulp 0.3% and 0.3% chemical mechanical pulp, volume load 6.51kgCOD / m 3 .d, the COD removal rate of waste paper deinking wastewater by this process is 85%-90%, and the removal rate of BOD reaches more than 95%.

Embodiment 3

[0020] Embodiment 3, treatment of high-concentration organic wastewater, influent COD is 10000-15000mg / l, the dosage of filler is 0.4% of chemical wood pulp, 0.3% of chemical straw pulp and 0.3% of chemical mechanical pulp, and the volume load is 4.72kgCOD / m 3 .d, the process has a COD removal rate of 80%-85% for high-concentration organic wastewater, a BOD removal rate of 90%-95%, and an ammonia nitrogen removal rate of more than 95%.

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Abstract

The invention relates to a biological membrane fluidized bed wastewater treatment method and belongs to the field of environmental engineering. The method comprises the following steps: adopting natural paper pulp fibers with good biocompatibility as fluidized bed carrier fillers and adopting a three-chamber composite biological membrane fluidized bed as a fluidized bed reactor. The method has the beneficial effects that the power consumption can be greatly reduced; meanwhile, as a plurality of fine fibers and micro pores are formed in the cellulose fibers, the growth and the adhesion of microorganisms are facilitated; and under the bridging and collecting action of the fine fibers, the problem existing in a conventional filler that microorganisms are easy to fall off is solved to a great degree. The method has good application prospect.

Description

technical field [0001] The invention relates to a biofilm fluidized bed wastewater treatment method, which belongs to the technical field of environmental engineering wastewater treatment. Background technique [0002] At present, the biological treatment method has become the main treatment technology of domestic sewage, urban sewage and organic industrial wastewater. The activated sludge method and contact oxidation method in these technologies need to aerate and oxygenate the wastewater in the reaction tank, and aerate every cubic meter of wastewater Oxygenation consumes at least 1Kwh of electric energy, and the wastewater pollutant load that can be treated is relatively low, and the impact resistance is small; although aeration and oxygenation are not required to treat wastewater with biological filters and biological turntables, the volume load of the reaction tank filler low, the denitrification effect of the system is poor, the reaction tank volume is large, the floor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F103/28C02F103/30
CPCC02F3/085C02F3/105C02F3/109C02F3/1273C02F2301/02Y02W10/10
Inventor 朱勇强
Owner 朱勇强
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