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MBBR-slow release carbon tank-BAF multi-technology coupling wastewater treatment process and method

A slow-release carbon pool, -BAF technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Increased operating costs and other issues to achieve a good oxygenation effect, simplify the operation difficulty, and reduce the effect of operating costs

Inactive Publication Date: 2019-05-10
四川拓璞环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing MBBR has the following main problems: 1) The filler is easy to lose, and the requirements for water and gas distribution are high; 2) It is difficult to remove COD, nitrogen and phosphorus at the same time with a single MBBR process; 3) When the MBBR process is combined with the AO process , needs to add external carbon source, which increases the operating cost; 4) The ability to remove heavy metals in wastewater is weak

Method used

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  • MBBR-slow release carbon tank-BAF multi-technology coupling wastewater treatment process and method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] 1) Wastewater enters the water inlet tank through the mechanical grille, and then enters the inclined tube sedimentation tank and the regulating tank in turn. The wastewater is separated from solid and liquid in the inclined tube sedimentation tank. The inclined tube sedimentation tank is equipped with a sludge discharge pipe, and the sludge at the bottom passes through the sludge The discharge pipe enters the sludge disposal unit.

[0037] 2) The wastewater from the regulating tank is mixed with the air provided by the blower through the sewage lift pump in the jet aerator, and enters the upflow MBBR reactor to remove organic pollutants in the wastewater, and at the same time oxidizes ammonia nitrogen to nitrate nitrogen, and the upflow type The dissolved oxygen in the MBBR reactor is controlled at 2mg / L, the suspended sludge concentration is controlled at 500mg / L, the BOD load is 0.5kgBOD / (m3·d), and the gas-water ratio is controlled at 6:1.

[0038] 3) The effluent f...

Embodiment 2

[0043] 1) Wastewater enters the water inlet tank through the mechanical grille, and then enters the inclined tube sedimentation tank and the regulating tank in turn. The wastewater is separated from solid and liquid in the inclined tube sedimentation tank. The inclined tube sedimentation tank is equipped with a sludge discharge pipe, and the sludge at the bottom passes through the sludge The discharge pipe enters the sludge disposal unit.

[0044] 2) The wastewater from the regulating tank is mixed with the air provided by the blower through the sewage lift pump in the jet aerator, and enters the upflow MBBR reactor to remove organic pollutants in the wastewater, and at the same time oxidizes ammonia nitrogen to nitrate nitrogen, and the upflow type The dissolved oxygen in the MBBR reactor is controlled at 4mg / L, the suspended sludge concentration is controlled at 1000mg / L, the BOD load is 1kgBOD / (m3·d), and the gas-water ratio is controlled at 10:1.

[0045] 3) The effluent f...

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Abstract

The invention discloses an MBBR-slow release carbon tank-BAF multi-technology coupling wastewater treatment process and method. A mechanical grating, a water inlet tank, an inclined pipe sedimentationtank, an adjusting tank, a sewage lifting pump, an electric adjusting valve, a jet aerator, an upflow MBBR reactor, a slow release carbon tank, a guide plate, a BAF tank, a sludge pump, a sludge sedimentation tank, an electric switch valve, an on-line turbidity monitor, a screen, a variable frequency blower and a sludge discharge pipe are used. According to the invention, an online turbidity monitor is interlocked with the variable frequency blower and the electric switch valve, the outlet turbidity of the BAF tank is automatically controlled, the blockage of the BAF tank is effectively prevented, the automation degree of equipment is improved, and the operation difficulty is simplified. By the wastewater treatment process and method, denitrification, dephosphorization and removal of organic pollution pollutants and heavy metals can be realized simultaneously, the treatment efficiency is high, equipment is compact, occupied area is small, and shock load resistance is high.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a wastewater treatment process and method coupled with MBBR-slow-release carbon pool-BAF multi-technology. Background technique [0002] MBBR (Moving Bed Bio-film Reactor) is a treatment process that combines the advantages of traditional fluidized bed and biological contact oxidation method. It adopts a kind of biological material that is suitable for microbial adsorption growth, its specific gravity is close to water, and can be suspended in water under slight stirring. The carrier, with anaerobic or facultative bacteria inside and aerobic bacteria outside, realizes the separation of HRT and SRT, ensures the biological holding capacity of bacteria for a long time, contains rich microbial species, has high volume load, and is durable Strong impact, stable performance, flexible and convenient, with good nitrogen and phosphorus removal effect. [0003] The existing MBBR has th...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 雷杰周正林李建华郑荣徐鑫
Owner 四川拓璞环保科技有限公司