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Integrated multi-medium soil technology reactor, and sewage processing method thereof

A multi-media and reactor technology, applied in chemical instruments and methods, biological water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problem of reducing the contact efficiency between sewage and module layers, reducing the removal efficiency of total nitrogen, and reactor hydraulics. Low load and other problems, to achieve the effect of improving the activity of aerobic microorganisms, reducing construction investment and operating costs, and enhancing the effect

Inactive Publication Date: 2019-10-15
南京市水产科学研究所 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Proper aeration can greatly promote the nitrification reaction in the system and improve the removal efficiency of ammonia nitrogen, but excessive aeration will reduce the removal efficiency of total nitrogen
At the same time, under the action of aeration, the removal efficiency of dissolved orthophosphate and total phosphorus in the MSL system is higher than that of non-aeration, but excessive aeration will form a Fe2O3 film on the surface of the iron filings filler, reducing the contact between sewage and the module layer efficiency, thereby reducing the removal rate of phosphorus under physical and chemical reactions
[0006] In summary, in view of the existing soil technology treatment process in the process of treating all kinds of agricultural sewage, it is urgent to develop a new The MSL reactor is of great significance for soil treatment technology

Method used

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  • Integrated multi-medium soil technology reactor, and sewage processing method thereof
  • Integrated multi-medium soil technology reactor, and sewage processing method thereof
  • Integrated multi-medium soil technology reactor, and sewage processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The present invention is an integrated multi-media soil technology reactor and its sewage treatment method, which treats the wastewater of a certain green shrimp breeding base in winter, the temperature is 5-15°C, and the quality of the wastewater is shown in the following table:

[0054]

[0055] The air-water ratio in the aeration reaction zone 3 of the multi-media soil layer technology reaction zone is 10:1, and the hydraulic load is 2m 3 / (m 2 d), the amount of dissolved oxygen is 2mg / L. During operation, the back-end sump is refluxed at 0.3 times to ensure the amount of sludge in the system. The operation process is stable, and there is no obvious blockage for 90 consecutive days. During operation, the treatment effect is good and relatively stable, and the effluent water quality is shown in the table below:

[0056]

[0057] Analysis: Compared with the traditional MSL process to treat the above-mentioned green shrimp farm wastewater, the hydraulic load is...

Embodiment 2

[0059] The present invention is an integrated multi-media soil technology reactor and its sewage treatment method, which treats the wastewater of a soft-shelled turtle breeding base in winter, and the quality of the wastewater is shown in the following table:

[0060]

[0061] The air-water ratio in the aeration reaction zone 3 of the multi-media soil layer technology reaction zone is 10:1, and the hydraulic load is 2m 3 / (m 2 d), the amount of dissolved oxygen is 2mg / L. During operation, the back-end sump is refluxed at 0.3 times to ensure the amount of sludge in the system. The operation process is stable, and there is no obvious blockage for 90 consecutive days. During operation, the treatment effect is good and relatively stable, and the effluent water quality is shown in the table below:

[0062]

[0063] Analysis: Treat the wastewater from the soft-shelled turtle breeding base above with the traditional MSL process, and the hydraulic load is 2m 3 / (m 2 d). Th...

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Abstract

The invention relates to an integrated multi-medium soil technology reactor, and a sewage processing method thereof. A reactor main body of the integrated multi-medium soil technology reactor comprises an inner soil percolation reaction zone and an outer multi-medium soil layer technology reaction zone; a concentric cylinder structure is formed by the inner soil percolation reaction zone and the outer multi-medium soil layer technology reaction zone; the bottoms of the inner soil percolation reaction zone and the outer multi-medium soil layer technology reaction zone are provided with a supporting layer; an aeration device is arranged on the supporting layer; a filling material in the inner soil percolation reaction zone is composed of iron filling doped zeolite; the outer multi-medium soil layer technology reaction zone comprises water layers and soil layers; the water layers are composed of zeolite; the soil layers are composed of common sand, straw, charcoal, and iron filings; the surfaces of the soil layers are covered with coarse sand; and the water layers and the soil layers are arranged alternatively from bottom to top. According to the integrated multi-medium soil technology reactor and the sewage processing method thereof, double layer reaction zone structure optimization is adopted, so that a good aerobiotic / anaerobic environment is constructed in the system, and nitrogen and phosphorus removal process is enhanced.

Description

technical field [0001] The invention relates to an integrated multi-media soil technology reactor and a sewage treatment method thereof. The invention belongs to the technical field of waste water treatment. Background technique [0002] In recent years, with the rapid development of the aquaculture industry, the environmental problems caused by aquaculture have become more and more serious. The main sources of pollutants in aquaculture wastewater include residual bait, metabolites of aquatic animals, and drugs used in feeding. The enrichment of these pollutants will lead to adverse effects such as a decrease in dissolved oxygen in the water body, a decrease in pH, and an increase in COD, which not only pollutes the surrounding water environment, but also causes the aquaculture itself to be polluted and unsustainable. Among the various purification technologies adopted for aquaculture wastewater, the ecological treatment technology degrades various pollutants in the water ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/20C02F101/16C02F101/30
CPCC02F1/001C02F1/28C02F3/302C02F3/308C02F3/34C02F9/00C02F2001/007C02F2101/16C02F2101/30C02F2103/20
Inventor 吴丹陈梦天魏启航
Owner 南京市水产科学研究所
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