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Reaction equipment for degrading ammonia-nitrogen

A reaction equipment and ammonia nitrogen technology, applied in the field of environmental engineering, can solve the problems of unsuitable combination of multiple water treatment methods and single function.

Inactive Publication Date: 2018-12-21
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing small-scale test equipment for simulating the degradation of ammonia nitrogen in rivers generally has a relatively simple structure and relatively single function, and is not suitable for the combined use of multiple water treatment methods

Method used

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  • Reaction equipment for degrading ammonia-nitrogen
  • Reaction equipment for degrading ammonia-nitrogen
  • Reaction equipment for degrading ammonia-nitrogen

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1 of the present invention, ammonia nitrogen content 10mg / L in the sewage flows through three reaction tanks successively, and when flowing into the first reaction tank, the suspended solids and microbial flocs in the water settle due to gravity, remove insoluble substances, and the hydraulic retention time 1h. When the sewage flows through the second reaction tank, add Mg-containing 2+ and PO 3- Ionic agent, make the ammonia nitrogen and phosphorus in the sewage to be replaced by struvite (magnesium ammonium phosphate, MgNH 4 P0 4 ·6H 2 0) in the form of precipitation, thereby recovering nitrogen and phosphorus in the sewage at the same time, and the hydraulic retention time is 2h. Sewage flows into the third reaction tank, and bio-microcapsules are added to the reaction tank to ensure that the dosage of bio-microcapsules is calculated according to the volume of the device. The unit dosage is 0.3g / m 3 , hydraulic retention time 2h. The degradation rate...

Embodiment 2

[0036] Under the same conditions of Example 1, the sewage flowing into the first reaction tank was changed from removing suspended solids through gravity sedimentation to sieving and intercepting, and the grid hole was 5mm. A fine screen is added to the reaction tank, and the retention is carried out through the screen. The degradation to ammonia nitrogen is 63%.

Embodiment 3

[0038] Under the same conditions of Example 1, the hydraulic retention time becomes 2.5 hours after the sewage flows into the second reaction tank, and the ammonia nitrogen degradation rate reaches 66%.

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Abstract

The invention discloses reaction equipment for degrading ammonia-nitrogen, particularly relates to reaction equipment for degrading ammonia-nitrogen under laboratory conditions, and belongs to the field of environment engineering. The reaction equipment for degrading ammonia-nitrogen under the laboratory conditions has the advantages that each unit can independently perform the water treatment single factor optimizing experiment, each unit can be communicated to form one set of miniature integrated reaction equipment, and the real conditions of riverway site are approached; by combining multiple water treatment technologies, the combining technology for riverway site treatment is optimized; the equipment for removing ammonia-nitrogen via mutual function of reaction device and bacterial agent is not found at the existing market, so that the waste of the bacterial agent is reduced, and the removal rate is improved.

Description

technical field [0001] The invention relates to a reaction device for degrading ammonia nitrogen, in particular to a reaction device for degrading ammonia nitrogen under laboratory conditions, belonging to the field of environmental engineering. Background technique [0002] In recent years, ammonia nitrogen has become one of the main pollutants of surface water pollution, and there is a trend of further aggravation, which has caused serious harm to the ecological environment. Ammonia nitrogen in water mainly comes from the initial pollution of nitrogen-containing organic matter in domestic sewage, which is then decomposed into nitrite nitrogen by microorganisms. When the content of nitrite nitrogen in water is too high, drinking this water will combine with protein to form nitrosamine, which is a A strong carcinogen. When studying the method of removing ammonia nitrogen in the river channel under the laboratory environment, a device with simple structure and complete funct...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/16
CPCC02F1/58C02F1/586C02F3/02C02F3/34C02F9/00C02F2001/007C02F2101/16C02F2301/08
Inventor 邓敬轩阮文权施万胜邓芸吕俊黄华杰王远飞高欣邰勇
Owner JIANGNAN UNIV
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