Process for treating domestic sewage combined by aerobic biological fluid-bed and micro electrolysis tech.

A technology of domestic sewage and aerobic organisms, applied in the field of environmental protection, can solve the problems of low CODcr removal rate, large floor area, difficult sludge treatment, etc., and achieve the effect of reducing quantity, floor area and investment

Inactive Publication Date: 2006-06-28
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of complex equipment, low CODcr removal rate, difficult sludge treatment and large floor area in the prior art, so as to provide an efficient, economical, simple operation, and small floor area domestic sewage three-phase A new technology of organic integration of internal circulation aerobic biological fluidized bed (TIABLB) and micro-electrolysis technology, that is, a method of organically combining TIABLB and micro-electrolysis technology to treat domestic sewage-"micro-electrolysis biological fluidized bed technology"

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] The pH value of the influent water is 6.5, the CODcr is 403mg / L, and the SS is 150mg / L. Aeration is started, and the aeration volume is 0.01m 3 / hr, hydraulic retention time 2 hours, add 2g / L of activated sludge and 2% carrier, carry out 2 days of carrier film-hanging culture, record the biological concentration in the fluidized bed 7g / L, measure the water quality after 3 days is : CODcr is 12mg / L, SS is 5mg / L, pH value is 6.9. 5.2 percentage points higher than ordinary activated sludge fluidized bed

example 2

[0018] The influent pH value is 7.0, CODcr is 560mg / L, SS is 160mg / L, and the aeration is started, and the aeration volume is 0.02m 3 / hr, the hydraulic retention time is 2 hours, add 3g / L activated sludge and 4% carrier, carry out 3-day carrier film-hanging culture, measure the biological concentration in the fluidized bed 7g / L, measure the water quality after 3 days For: CODcr is 15mg / L, SS is 5mg / L, pH value is 7.3. 7.1 percentage points higher than ordinary activated sludge fluidized bed

example 3

[0020] The influent pH value is 7.5, CODcr is 702mg / L, SS is 200mg / L, and the aeration is started, and the aeration volume is 0.03m 3 / hr, the hydraulic retention time is 2.5 hours, add 4g / L activated sludge and 5% carrier, and carry out 4 days of carrier film-hanging culture, the biological concentration in the fluidized bed is 7.2g / L, and the water is measured after 3 days Water quality: CODcr 24mg / L, SS 7mg / L, pH 7.7. 6.8 percentage points higher than ordinary activated sludge fluidized bed.

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Abstract

A process for treating lift sewage by combination of aerobic biologic fluidized bed with micro-electrolysis includes such steps as continuously making sewage flow in fluidized bed, beginning aeration, adding active sludge, proportionally adding the mixture of iron filings and granular activated carbon, which is used as carrier, attaching microbes to surface of carrier, culturing for 2-5 days until the concentration of microbes reaches 7-9 g/L, and normal running. The removal rate of CODCT is 96-98%.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a method of using a three-phase internal circulation aerobic biological fluidized bed and organically combining a three-phase internal circulation aerobic biological fluidized bed (TIABLB) with micro-electrolysis technology to treat domestic sewage. Domestic sewage treatment in the community. Background technique [0002] Water is a precious natural resource. With the acceleration of my country's urbanization process and the improvement of people's living standards, more and more communities have produced a large amount of residential sewage. In recent years, my country's urban water pollution has become increasingly serious, and water shortages have become increasingly severe. Every year, my country's domestic sewage discharge is more than 27 billion tons. Urban domestic water pollution has become an important factor affecting people's lives and restricting urban economic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02C02F1/46
CPCY02W10/10
Inventor 林海孙春宝苗文凭张庆娜黄鹂鸣
Owner UNIV OF SCI & TECH BEIJING
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