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Method for treating rural wastewater

A waste water treatment and waste water technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc. Nitrogen and phosphorus exceeding the standard, to achieve the effect of protecting the living environment and health

Inactive Publication Date: 2010-07-07
张文波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This biodegradation treatment method cannot effectively remove the nitrogen and phosphorus contained in the sewage. When the sewage is discharged, the nitrogen and phosphorus usually exceed the standard, and the discharge into rivers and lakes can easily cause eutrophication of the water body, affecting environmental sanitation and the health of farmers.

Method used

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Embodiment Construction

[0013] The specific structure of the present invention will be further elaborated below.

[0014] A method for treating rural wastewater. After pretreatment, the anaerobic-anoxic-aerobic-membrane bioreactor process is used to remove nitrogen and phosphorus, and then enter the wetland treatment system to further purify the wastewater. Biological denitrification is carried out through nitrification and denitrification reactions. Specifically, organic nitrogen and inorganic nitrogen in wastewater are first converted into ammonia nitrogen by ammonifying bacteria under aerobic conditions, and then denitrified under the action of nitrosifying bacteria and nitrifying bacteria. Under the programming of nitrate nitrogen, this process is called aerobic nitrification, and then under anoxic conditions, denitrifying bacteria act on it, and an external carbon source provides energy to reduce nitrate nitrogen to nitrogen and escape from the wastewater. Phosphorus removal is carried out by ph...

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Abstract

The invention discloses a method for treating rural wastewater, which comprises the following steps: pretreating of the wastewater through a grating and an oil separating tank, denitrifying and dephosphorizing through anaerobic-anoxic-aerobic-membrane bioreactor process, further purifying of the wastewater in a wetland treatment system and wastewater emission after reaching standards, thereby protecting the living environment and body health of farmers.

Description

technical field [0001] The invention relates to a rural wastewater treatment method. Background technique [0002] Existing rural wastewater is generally treated by a simple biodegradation method. First, oxygen is supplied to the sewage through fans and other equipment, and biological strains and microorganisms are cultivated, and then part of the organic matter in the sewage is decomposed into non-polluting carbon dioxide, Substances such as water, and a small part of organic matter are synthesized into cell matter, which promotes the growth of microorganisms, and is discharged in the form of excess sludge, so that the sewage can be purified and discharged. This biodegradation treatment method cannot effectively remove the nitrogen and phosphorus contained in the sewage. When the sewage is discharged, the nitrogen and phosphorus usually exceed the standard, and the discharge into rivers and lakes can easily cause eutrophication of the water body, affecting environmental san...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/44C02F1/40
Inventor 张文波王强严荣
Owner 张文波
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