Domestic sewage treating underflow ecological bed method and apparatus

An ecological bed and subsurface flow technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., to achieve the effect of saving a lot of investment and operation management costs, saving energy, and saving water resources

Inactive Publication Date: 2009-07-15
笪庆生
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for subsurface ecological bed treatment of domestic sewage, which can solve the problems of non-powered oxygen supply, anti-blocking and self-purification when the subsurface ecological bed is covered with deep soil. The ecological bed does not occupy land in the community, does not affect the landscape plants, can be in a facultative and aerobic state at the same time, can play the role of dephosphorization and denitrification, maintain self-flow without clogging, and can be self-purifying and sustainable

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  • Domestic sewage treating underflow ecological bed method and apparatus

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Embodiment Construction

[0030] Such as figure 1 As shown, the sewage is first pretreated through the anaerobic treatment tank 1. The anaerobic treatment tank 1 is a fully sealed structure made of waterproof materials or brick-concrete, and the sewage is naturally anaerobically fermented in it to remove BOD. 5 , COD, and SS enter the bio-carbon filter 3 through the outlet pipe A2. The bio-carbon filter 3 is made of waterproof material or brick-concrete, and is filled with organic biological materials such as bamboo, wood, pine nuts, reeds, and walnut shells. As filter materials, these materials have a large specific surface area, which can not only form biofilms, but also provide carbon sources for denitrification, reduce the content of nitrogen and phosphorus in sewage, and enter the new subsurface ecological bed 6 through the outlet pipe B5; Bed 6 is made of waterproof material or brick-concrete, the bottom is filled with 100mm-thick concrete, 100mm-thick gravel, 400mm-thick cinder, 100mm-thick grav...

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Abstract

Domestic sewage treating underflow ecological bed method and apparatus is disclosed. Sewage is first treated in an anaerobic tank to eliminate BOD5, COD and SS; then treated in a biological carbon filter to provide carbon source for lowering nitrogen content, and treated in novel underflow ecological bed to eliminate nitride, phosphide, BOD5, COD, SS; and other pollutant; and finally gathered in a recovering pond for reuse or draining. The present invention solves the problems of no-power oxygen supply, jamming prevention, self purification, etc. of underflow ecological bed below thick soil layer, and the sewage treating system has simple operation, unmanned management, continuous running and high purifying effect.

Description

technical field [0001] The invention relates to a technology for domestic sewage treatment, in particular to a method for treating domestic sewage by using an underflow ecological bed and a device for realizing the method. Background technique [0002] The current subsurface flow composite ecological bed treatment technology for domestic sewage can only treat low-concentration sewage in rural areas. The filter material of this method is cinder, the surface layer is 10cm thick covering soil, and water and soil plants are planted on it. The plant roots go deep into the filter layer to absorb nutrients. Oxygen can be released into the filter layer through the roots, but because the covering soil is very shallow, the sewage can only pass through 10cm of covering soil, and the plant species are limited to aquatic plants. If it is used in urban residential areas, it will affect the landscape and sanitation, because urban community sewage discharge They are all between 600mm-700mm ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/32
Inventor 笪庆生
Owner 笪庆生
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