Treatment process of domestic wastewater

A domestic sewage and treatment process technology, applied in the direction of biological water/sewage treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of water quality impact, high nitrogen and phosphorus content in sewage, and achieve the reduction of bacterial content, good adsorption effect

Inactive Publication Date: 2017-11-21
安徽海东环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nitrogen and phosphorus content of sewage treated by the current treatment process is still high, which has many impacts on water quality.

Method used

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  • Treatment process of domestic wastewater
  • Treatment process of domestic wastewater
  • Treatment process of domestic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A domestic sewage treatment process, comprising the steps of:

[0025] (1) The domestic sewage first passes through the mechanical grille and then enters the grease trap;

[0026] (2) The effluent from the grease trap is pumped into the oxygen-enriched pool, and the oxygen concentration in the oxygen-enriched pool is maintained at 24.5%, and blue-green algae are planted in the oxygen-enriched pool. The sewage is treated in the oxygen-enriched pool for 2-3 hours and then sent to the acidification pool. Acetic acid maintains its pH at 6.88-6.90;

[0027] (3) Sewage is lifted to the primary sedimentation tank through the influent lift pump, and the sewage with low solid content in the upper part of the primary sedimentation tank is pumped into the biological selection tank, and a hollow fiber microfiltration membrane is installed in the biological selection tank for filtration. For hydrogen peroxide, add 0.01kg of hydrogen peroxide per cubic meter of water as the standard...

Embodiment 2

[0040] A domestic sewage treatment process, comprising the steps of:

[0041] (1) The domestic sewage first passes through the mechanical grille and then enters the grease trap;

[0042] (2) The effluent from the grease trap is pumped into the oxygen-enriched pool, and the oxygen concentration in the oxygen-enriched pool is maintained at 24.5%, and blue-green algae are planted in the oxygen-enriched pool. The sewage is treated in the oxygen-enriched pool for 2-3 hours and then sent to the acidification pool. Acetic acid maintains its pH at 6.88-6.90;

[0043] (3) Sewage is lifted to the primary sedimentation tank through the influent lift pump, and the sewage with low solid content in the upper part of the primary sedimentation tank is pumped into the biological selection tank, and a hollow fiber microfiltration membrane is installed in the biological selection tank for filtration. For hydrogen peroxide, add 0.01kg of hydrogen peroxide per cubic meter of water as the standard...

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PUM

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Abstract

The invention relates to the field of wastewater treatment and provides a treatment process of domestic wastewater, comprising the steps of roughly filtering, treating by an oxygen-rich tank, filtering via a hollow fiber microfiltration membrane set in a biological selection tank, denitrifying in an anoxic biochemical tank, subjecting the wastewater to sludge-water separation in a secondary precipitating tank, fully mixing the wastewater in an ozone contact tank for sterilizing, and treating in a regenerated water tank via chlorophyll. Blue-green algae can absorb mass nitrogen and phosphorus, acetic acid helps kill the blue-green algae in wastewater, chlorophyll can provide good adsorption for sundry bacteria and suspended particulate matters in the wastewater, lactic acid bacteria adsorb the chlorophyll carrying sundry bacteria and suspended particulate matters form precipitate after immobilization by the lactic acid bacteria, and therefore, the content of bacteria in the wastewater is greatly decreased.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a domestic sewage treatment process. Background technique [0002] my country's "Water Pollution Prevention Law" stipulates that the sewage discharged from residential areas, tourist attractions, resorts, sanatoriums, airports, railway stations, economic development zones and other scattered crowd settlements that cannot be included in the urban sewage collection system and industrial wastewater from independent industrial and mining areas Standardized discharge should be treated locally. Nursing homes, large hotels, large restaurants, leisure tourism resorts, scenic villas, and expressway service areas are all distributed domestic sewage discharge sources. Nursing homes, resorts, and mountain villas are generally located near mountains and rivers, far away from cities, and cannot be connected to urban drainage pipe networks. In addition, sensitive water bodies are also involved,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/285C02F1/40C02F1/444C02F1/50C02F3/302C02F3/325C02F3/34C02F9/00
Inventor 薛海生
Owner 安徽海东环保科技有限公司
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