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Treatment system coupling iron-promoted magnetic loading anaerobic/anoxic activated sludge process and biofilm process

A technology of activated sludge method and biofilm method, which is applied in the field of iron-promoted magnetic loading anaerobic/anoxic activated sludge method and biofilm method coupling treatment system, which can solve the problem of insufficient carbon source, frequent sludge bulking, and land occupation Large and other problems, to achieve the effect of improving the specific gravity and settling performance, increasing the concentration of activated sludge, and no risk of sludge bulking

Pending Publication Date: 2019-12-24
QINGDAO SPRING WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of insufficient carbon source, difficult control of anaerobic environment, low denitrification efficiency, conflicts in sludge age between nitrifying bacteria and phosphorus removing bacteria, frequent occurrence of sludge bulking, and large floor area in nitrogen and phosphorus removal, the present invention discloses A coupling treatment system of iron-promoted magnetic loading anaerobic / anoxic activated sludge process and biofilm process

Method used

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  • Treatment system coupling iron-promoted magnetic loading anaerobic/anoxic activated sludge process and biofilm process
  • Treatment system coupling iron-promoted magnetic loading anaerobic/anoxic activated sludge process and biofilm process
  • Treatment system coupling iron-promoted magnetic loading anaerobic/anoxic activated sludge process and biofilm process

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Embodiment 1

[0060] The invention discloses an iron-promoted magnetic loading anaerobic / anoxic activated sludge method and a biofilm method coupling treatment system, such as figure 1 As shown, it includes anaerobic tank, anoxic tank, sedimentation tank, biofilm tank and post-treatment system connected in sequence. system is connected.

[0061] In particular, the above-mentioned anaerobic tank is provided with a water inlet, a sludge return inlet, a composite iron-based accelerator input inlet, an anaerobic mixed liquid outlet, and an inlet for recovering ferromagnetic powder; the sewage enters the anaerobic tank through the water inlet, and the composite The inlet for adding iron-based accelerators is connected to the outlet for adding composite iron-based accelerators of the compound iron-based accelerator dosing system; an anaerobic agitator is provided in the above-mentioned anaerobic pool.

[0062] In particular, the above-mentioned anoxic pool is provided with an anaerobic mixed liq...

Embodiment 2

[0072] The difference from Example 1 is:

[0073] The above-mentioned sedimentation tank is a vertical flow sedimentation tank.

[0074]The above-mentioned biofilm tank is also equipped with a bottom aeration system, and an agitator can also be added according to actual needs. The bottom aeration system adopts perforated "aeration + microporous" combined aeration.

[0075] The biofilm pool mentioned above is a biological contact oxidation pool.

[0076] The above-mentioned post-treatment system is used for subsequent treatment after sewage treatment, including a mud-water separation and sedimentation device and a filtration device.

[0077] The above-mentioned composite iron-based promoter selects ferric oxide powder (Fe 3 o 4 ); and the particle size of ferric oxide powder added is 100 μm.

Embodiment 3

[0079] The difference from Example 1 is:

[0080] The above-mentioned sedimentation tank is selected as inclined tube (plate) sedimentation tank.

[0081] The above-mentioned biofilm pool is also equipped with a membrane aeration system, and an agitator can also be added according to actual needs. The membrane aeration system adopts microporous aeration.

[0082] The biofilm pool mentioned above is a biological aerated filter (BAF) and a membrane aerobic biofilm reactor (MABR).

[0083] The above-mentioned post-treatment system is used for subsequent treatment after sewage treatment, including a filter device, a deep denitrification and dephosphorization device and a disinfection device.

[0084] The above-mentioned composite iron-based promoter selects ferric oxide powder (Fe 3 o 4 ), FeCl 3 , Polyferric sulfate (PFS); the particle size of ferric oxide powder added is 200μm; 3 , PFS dosing and proportioning can be adjusted to meet the requirements of stable and up-to-sta...

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Abstract

The invention discloses a treatment system coupling an iron-promoted magnetic loading anaerobic / anoxic activated sludge process and a biofilm process coupled treatment system, and relates to the technical field of sewage treatment. The system includes an anaerobic tank, an anoxic tank, a sedimentation tank, a biological membrane tank and a post-treatment system which are sequentially connected, wherein the anaerobic tank is connected with a composite iron-based promoter feeding system, and the sedimentation tank is also connected with a magnetic seed separation system. Compared with a conventional nitrogen and phosphorus removal process, the treatment system has the beneficial effects that the concentration of activated sludge of the treatment system can be greatly increased, the biological nitrogen and phosphorus removal effect can be enhanced; meanwhile, the risk of sludge bulking is reduced; the treatment system has the advantages of high process integration degree, good effect, reliable operation, convenient management, high load, small occupied area and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an iron-promoted magnetic loading anaerobic / anoxic activated sludge method and a biofilm method coupling treatment system. Background technique [0002] At present, water eutrophication has become a global environmental problem. A large amount of domestic sewage and industrial wastewater is discharged into the water body, resulting in a large intake of nitrogen and phosphorus-containing substances in the water body, resulting in eutrophication of the water body; the biological nitrogen and phosphorus removal process has the advantages of low cost, less secondary pollution, and mild conditions. It is widely used in wastewater nitrogen and phosphorus removal. [0003] At present, the drainage standards of municipal and industrial sewage plants are getting higher and higher, and some local standards are higher than the "Pollutant Discharge Standards for Urban Sewage Treatm...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/308C02F3/34C02F1/488C02F1/52C02F1/5245C02F1/56C02F1/001C02F2203/006C02F2301/046C02F2209/08C02F2209/14C02F2209/16C02F2209/10C02F2303/06
Inventor 王存峰朱清江宋平周苑广耀许晨文于振滨
Owner QINGDAO SPRING WATER TREATMENT
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