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Sewage treatment system with variable tank capacity

A sewage treatment system, a technology with variable pool capacity, applied in biological water/sewage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc. Realistic feasibility and other issues, to achieve the effect of increasing the biological phosphorus removal effect, strong operation stability and stable operation.

Pending Publication Date: 2020-05-08
QINGDAO SPRING WATER TREATMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The volume of the above sewage treatment system is changed by the movable baffle. However, after the baffle is moved, only the pool volume is changed, but the equipment of each pool capacity remains unchanged. For example, after changing the original aerobic area to an anoxic area, the lack of The equipment in the oxygen zone is still the aeration device in the original aerobic zone. After the anoxic operation, the aeration device is closed, which cannot ensure the fluidization of microorganisms in the pool, so it is not feasible

Method used

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  • Sewage treatment system with variable tank capacity
  • Sewage treatment system with variable tank capacity
  • Sewage treatment system with variable tank capacity

Examples

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Effect test

Embodiment 1

[0045] A sewage treatment plant with a designed water volume of 100,000m 3 / d, influent COD, BOD 5 , NH 3 , TN design values ​​are 1000, 500, 80, 125mg / L respectively, AAO process is adopted, and the pool volume ratio is 1:4:5. Among them, the aerobic section adds suspension carrier to form IFAS mud film process, and the total residence time of the system is 23.8h; Since the sewage plant is adjacent to the sea, affected by seawater backflow, the chlorine ions in the influent fluctuate greatly. When the chloride ions are high, the denitrification in the anoxic zone is inhibited, resulting in an increase in the TN of the effluent; in the anoxic pool and the aerobic pool After the isolation plate is installed between the pools, move the isolation plate to adjust the volume ratio of the AO pool to 5:4 when the chloride ion is high, increase the volume of the denitrification pool, and prolong the HRT of the anoxic zone. The denitrification effect of the system is guaranteed, and t...

Embodiment 2

[0047] An integrated equipment with a design water volume of 300m 3 / d, influent COD, BOD 5 , NH 3 The design values ​​of , TN, and TP are 410, 220, 31, 39, and 5.5mg / L respectively. The AAO process based on the activated sludge method is adopted, the pool volume ratio is 1:4:6, and the total residence time is 8.0h. During operation, affected by the low temperature in winter, the activity of nitrifying bacteria decreases, resulting in insufficient HRT in the aerobic zone, which in turn causes the ammonia nitrogen and TN in the effluent to exceed the standard. After installing the isolation plate between the anoxic pool and the aerobic pool, it is necessary to adjust the isolation plate in winter The ratio of anoxic / aerobic pool volume is 3:7, increasing the volume of the nitrification pool, extending the HRT of the aerobic zone, and ensuring the nitrification effect of the system. The average values ​​of effluent COD, BOD5, NH3, and TN are 32.6, 14.1, 1.25, and 7.88, respecti...

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Abstract

The invention discloses a sewage treatment system with a variable tank capacity, and relates to the technical field of sewage treatment equipment. The sewage treatment system comprises a reaction tank, a stirring device, an aeration device and an isolation plate; the reaction tank comprises a first reaction tank body and a second reaction tank body which are arranged side by side, and two slidingrails are arranged on the top of the first reaction tank body and the top of the second reaction tank body and are parallel to each other; the isolation plate comprises an isolation plate main body, rollers matched with the sliding rails are arranged at the top of the isolation plate main body, and the isolation plate is driven to slide in the reaction tank and change the tank capacity through thesliding of the rollers on the sliding rails. The tank capacity ratio of different functional areas of the system is changed by adjusting the isolation plate, so that the residence time of each functional area is controlled, and the effluent can stably reach the standard under different water inlet and environment conditions. The sewage treatment system has the advantages of simple control, stableoperation, stable and up-to-standard effluent and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a sewage treatment system with variable pool capacity. Background technique [0002] As one of the most mature sewage biochemical treatment processes, nitrification and denitrification are widely used in the sewage treatment industry. The corresponding AO denitrification process has many advantages. First, the AO method has simple process flow, low operating costs and small footprint; Secondly, the carbon-containing organic matter and endogenous metabolites in the raw sewage are used as the carbon source, which saves the cost of external carbon source investment; thirdly, the A tank is first, so that the denitrification consumes part of the raw water carbon source, which can reduce the load of the aerobic tank ; The O pool is behind, which can further remove organic matter and ensure that the effluent reaches the standard; finally, the alkalinity generated by t...

Claims

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Application Information

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IPC IPC(8): C02F3/30
CPCC02F3/308
Inventor 韩文杰吴迪周宸宇杨忠启孙明武郑志佳
Owner QINGDAO SPRING WATER TREATMENT