Long flow channel gas stripping reflux MBBR integrated system and operation method

A gas stripping reflux and long-flow technology, which is applied in chemical instruments and methods, water treatment parameter control, special treatment targets, etc., can solve problems that affect the efficiency of nitrogen and phosphorus removal, low comprehensive utilization efficiency, uneven mixing of carbon sources, etc. , to achieve the effect of reducing the content of pollutants, achieving the effect of nitrogen and phosphorus removal, safe and convenient transportation

Pending Publication Date: 2019-10-29
QINGDAO SPRING WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At this stage, there are still some problems in the MBBR integrated system. There are many motor systems, and there are certain difficulties in operation and maintenance. Due to the problem of dissolved oxygen in the form of an air lift reflux pump, the efficiency of nitrogen and phosphorus removal is affected.
Due to the serious imbalance in the carbon-nitrogen ratio of rural sewage, carbon sources need to be added. In the process of use, there are problems of uneven mixing of carbon sources and low comprehensive utilization efficiency.

Method used

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  • Long flow channel gas stripping reflux MBBR integrated system and operation method
  • Long flow channel gas stripping reflux MBBR integrated system and operation method

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Effect test

Embodiment 1

[0057] The system of the invention is used for treating rural sewage with unbalanced carbon-nitrogen ratio.

[0058] Specific reference indicators such as: COD150mg / L, ammonia nitrogen 40mg / L, total nitrogen 50mg / L, total phosphorus 5mg / L, in this system, the anoxic tank adopts UPVC perforated aeration pipe as the stirring device in the tank, and the MBBR tank is equipped with air lift device, the outlet of the gas lift device flows to the water inlet end of the anoxic pool through the long flow channel return tank, the long flow channel return tank adopts "L" shape, the material is made of SS304 stainless steel, and the carbon source dosing pump adopts metering dosing pump. The carbon source is sodium acetate with an effective concentration of 35%, and the injection outlet is connected with the inlet of the reflux tank. The outlet of the MBBR tank is connected to the inlet of the sedimentation tank. After the mud and water are separated, they are discharged up to the standard...

Embodiment 2

[0060] The system of the invention is used for treating rural sewage with unbalanced carbon-nitrogen ratio.

[0061] Specific reference indicators such as: COD150mg / L, ammonia nitrogen 40mg / L, total nitrogen 50mg / L, total phosphorus 5mg / L, in this system, the anoxic tank adopts UPVC perforated aeration pipe as the stirring device in the tank, and the MBBR tank is equipped with air lift The outlet of the gas lift device flows to the inlet end of the anoxic tank through the backflow tank. The long flow channel backflow tank adopts the "∪" type, and the material is made of epoxy asphalt anti-corrosion carbon steel. The carbon source dosing pump adopts metering dosing For the drug pump, the carbon source is sodium acetate with an effective concentration of 35%, and the injection outlet is connected to the inlet of the reflux tank. The outlet of the MBBR tank is connected to the inlet of the sedimentation tank. After the mud and water are separated, the effluent passes through the ...

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Abstract

The invention discloses a long flow channel gas stripping reflux MBBR integrated system and operation method, and belongs to the technical field of sewage treatment. The problems that in the prior artcarbon sources are unevenly mixed and the comprehensive utilization efficiency is low in a system are solved. The long flow channel gas stripping reflux MBBR integrated system comprises an anoxic pond, an MBBR tank, a sedimentation tank, and a comprehensive device room, wherein the anoxic pond, the MBBR tank, the sedimentation tank, and the comprehensive device room are arranged in sequence, a fine bubble aerator, a nitrifying liquid reflux well, and a suspension carrier are arranged in the MBBR tank, a gas stripping device is arranged in the nitrifying liquid reflux well, a long flow channelreflux groove is formed between the MBBR tank and the anoxic pond in a connecting mode, the end located at one end of the MBBR tank serves as an outlet end, the end located at one end of the anoxic pond serves as an inlet end, the inlet end of the long flow channel reflux groove is connected with a liquid outlet added with the carbon sources, and the gas stripping device is used for lifting the nitrifying liquid in the MBBR tank into the long flow channel reflux groove. According to the long flow channel gas stripping reflux MBBR integrated system and operation method, the reflux groove of along flow channel is adopted, good dosing mixing and dissolved oxygen removal can be realized in the reflux groove, and good nitrogen and phosphorus removal effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an MBBR integrated system and operation method for long channel gas stripping and reflux. Background technique [0002] At present, with the improvement of rural residents' living standards, domestic rural domestic sewage has problems such as rapid growth, wide sources, low treatment rate, and large volume. With the improvement of rural domestic sewage methods and the development of rural economy, the amount of domestic sewage has gradually increased. The scattered characteristics of villages easily lead to non-concentrated sewage, which is difficult to centralize; moreover, rural sewage comes not only from kitchen sewage and human feces, but also domestic garbage and sewage infiltrated by household cleaning. Therefore, rural sewage has the characteristics of dispersion, large changes in water quality, and large impact of water volume. Generally speaking, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/308C02F1/52C02F1/001C02F1/32C02F2303/04C02F2203/006C02F2301/046C02F2303/14C02F2209/08C02F2209/14C02F2209/16
Inventor 赵廷杰刘凯王海朋
Owner QINGDAO SPRING WATER TREATMENT
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