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Microbial sewage treatment system and sewage treatment method

A sewage treatment system and microorganism technology, applied in biological water/sewage treatment, biological treatment device, water/sludge/sewage treatment, etc., can solve problems such as the removal of unfavorable nitrogen and phosphorus pollutants, and achieve the goal of improving water quality and reducing costs. Effect

Pending Publication Date: 2019-10-18
王超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent 201210382715.9 "Magnetic loaded magnetic mud internal return sewage biological treatment process and device system" only in-situ internal return magnetic sludge, without external return, so that the microorganisms in the magnetic sludge lack the circulation stimulation of anoxic, anaerobic and aerobic process, which is not conducive to the removal of nitrogen and phosphorus pollutants, especially nitrogen removal that requires anoxic / aerobic alternation and anaerobic / aerobic alternation for phosphorus removal

Method used

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  • Microbial sewage treatment system and sewage treatment method
  • Microbial sewage treatment system and sewage treatment method
  • Microbial sewage treatment system and sewage treatment method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] attached figure 1 It is a schematic diagram of the structure of this embodiment. The microbial sewage treatment system includes a microbial combination pool, a sludge collection system, a sludge transportation system, a recovery system, an aeration system, etc., wherein the microbial combination pool includes an aerobic pool 1, an anoxic pool 2 and Anaerobic pool 3, during sewage treatment, sewage flows in successively.

[0032] The sludge collection system is located in the anaerobic tank 3 and includes a magnetic drum 4 , a scraper 5 and a collector 6 . The specific structure is attached figure 2As shown, the collector 6 is located in the anaerobic tank 3 at the rear end of the microbial combination tank, and can be an integrated structure separated up and down by a partition 63, the upper part is an overflow tank 61, and the lower part is a mud receiving tank 62. The overflow tank 61 and the mud receiving tank 62 can also be made separately and assembled into the ...

Embodiment 2

[0050] attached Figure 4 It is a schematic plan view of the existing domestic sewage treatment facilities. The sewage treatment capacity is 10,000 tons per day. The process is "selection pool + oxidation ditch". Sewage first enters the selection pool 101, then enters the oxidation ditch 102, flows through the aerobic zone 104, the anoxic zone 105, and the anaerobic zone 106 in turn, and finally flows out through the water collection weir 103. In the aerobic zone 104, an aeration device II 17 connected with the fan 11 is provided. Under the action of microorganisms, organic matter degradation, nitrification, and aerobic phosphorus uptake will occur in the sewage. In the anoxic zone 105, denitrification and denitrification will occur. Anaerobic phosphorus release occurs.

[0051] Table 1 Water quality comparison table

[0052] name COD mg / L Ammonia nitrogen mg / L Total nitrogen mg / L Total phosphorus mg / L flooded 320 46 53 6 Raw water 48 5 16 ...

Embodiment 3

[0067] attached Figure 6 It is a schematic diagram of the structure of this example. Compared with Example 1, the obvious difference is: 1) The order of the functional pools of the microbial combination pool is different, and the sewage flows through the anaerobic pool 3, the anoxic pool 2, and the aerobic pool 1; 2 ) The overflow tank 61 is separated from the sludge collection tank 62 and placed in the anaerobic pool 3 at the front end of the microbial combination pool; 3) The mud collection tank 62 and the sludge collection system are placed in the aerobic pool 1 at the rear end of the biological combination pool, and The upper mouth of the mud collection tank 62 is higher than the water surface to ensure that the return pump 15 transports the magnetically active sludge; 4) The magnetically active sludge and the supernatant from the dephosphorization treatment are both transported back to the anaerobic pool 3 at the front end of the microbial combination pool Middle; 5) The...

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Abstract

The invention discloses a microbial sewage treatment system and a sewage treatment method. The system includes a microbial combination tank, an aeration system, a sludge collection system, a sludge transportation system and a recovery system. The recovery system includes a regeneration recovery tank, which is divided into an upper part and a lower part by an electromagnetic disk, a filter materialis installed at the upper part for phosphorus recovery, and an aeration device and a magnetic powder recovery mechanism are installed at the lower part to recover magnetic powder. The sludge collection system realizes the collection of magnetic activated sludge, and the sludge transportation system realizes reflux transportation of magnetic activated sludge outside the tank. The system adopts themagnetic field induced HAP crystallization method to enhance phosphorus removal, and utilizes the dual purposes of the magnetic field to realize simultaneous recovery of phosphorus and magnetic powder. While an original sewage treatment system is reconstructed, the system can achieve production and construction simultaneously. With the system and method provided by the invention, after sewage treatment the water quality is obviously improved.

Description

technical field [0001] The invention is applied in the field of sewage treatment, and in particular relates to a microbial sewage treatment system for domestic sewage and a method for treating sewage by using the system. Background technique [0002] Microbiological sewage treatment is the most widely used technology in water treatment. With the improvement of discharge water quality, especially the improvement of nitrogen and phosphorus removal requirements, strengthening the function of microorganisms has become a hot spot. There are two commonly used methods. One is to add special bacteria agents to improve the treatment effect by inoculating bacteria agents, but there are problems such as high cost and single types of enhanced microorganisms. The other is to add powdered activated carbon, magnetic powder and other substances to increase the number and types of microorganisms and improve the properties of sludge, such as reducing the risk of sludge bulking and sludge gran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/30C01B25/02C01B25/00C02F101/10C02F101/16C02F101/30
CPCC02F3/34C02F3/30C02F3/308C01B25/003C01B25/02C02F2101/16C02F2101/30C02F2203/006Y02W10/10
Inventor 王超孟维亮李会平赵宝东刘嘉刘春王若朴
Owner 王超
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