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Ammonia stripping process and device for high-ammonia-nitrogen wastewater

A technology of ammonia stripping and high ammonia nitrogen, applied in the direction of ammonia compounds, water pollutants, degassed water/sewage treatment, etc., can solve the problems of stripping tower fouling, secondary pollution, low ammonia removal efficiency, etc., and achieve saving Low consumption, low operating cost, and high ammonia removal efficiency

Inactive Publication Date: 2017-02-15
SHANGHAI JINGYU ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of high ammonia nitrogen wastewater ammonia blowing process and its method for the serious secondary pollution problem in the above-mentioned traditional ammonia stripping technology, the low efficiency of ammonia removal, and the technical problems of frequent fouling in the stripping tower. device, greatly improving the efficiency of ammonia removal, avoiding secondary pollution, and reducing operating costs

Method used

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  • Ammonia stripping process and device for high-ammonia-nitrogen wastewater
  • Ammonia stripping process and device for high-ammonia-nitrogen wastewater

Examples

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Embodiment

[0028] as attached figure 2 Shown, a kind of device of the ammonia stripping process of high ammonia nitrogen waste water, it comprises raw water box 4, ammonia stripping reactor 7, lime or lime milk box 1, clear water box 14, pH callback box 19, produced water box 22, gas Absorber 26, ammonium sulfate recovery box 27;

[0029] The raw water tank 4 is connected to the ammonia stripping reactor 7, and the first water inlet pump 5 is installed on the connecting pipeline; the lime or lime milk tank 1 is connected to the ammonia stripping reactor 7, and the first dosing pump 3 is installed on the connecting pipeline; The clean water tank 14 is connected with the ammonia blow-off reactor 7, and the second water inlet pump 13 is installed on the connecting pipeline; the outlet water output end of the ammonia blow-off reactor 7 is connected with the pH value callback box 20, and the pH value callback box 20 is connected with the produced water tank 22 Connect; the foam output end o...

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Abstract

The invention relates to an ammonia stripping process and device for high-ammonia-nitrogen wastewater. By arranging a sedimentation process after pH regulation by adding alkali and an ammonia stripping process to be performed in a closed reaction device, performing aeration by means of jet-flow aeration and fully utilizing waste heat of a biochemical system to increase the temperature of high-ammonia-nitrogen wastewater, the ammonia removing efficiency is greatly improved; by performing reflux on sediment sludge produced in the system, the amount of used lime or lime milk is saved, and finally ammonia gas produced in the system is absorbed by adopting sulfuric acid to obtain ammonium sulfate which is recycled as ammonia fertilizer, such that the entire system not only has no secondary pollution, but also is high in ammonia removing efficiency and is low in operating cost and the technique can be more widely popularized and applied.

Description

technical field [0001] The invention belongs to the technical field of high ammonia nitrogen wastewater treatment, and in particular relates to an ammonia stripping process and a device for high ammonia nitrogen wastewater. Background technique [0002] Because waste water with high ammonia nitrogen (such as landfill leachate, chemical waste water, etc.) is extremely harmful to the environment and is difficult to deal with, in order to meet the public's continuous improvement in environmental quality, the country has formulated more and more stringent discharge standards for ammonia nitrogen. , Efficient denitrification technology has become the focus and hot spot in the field of water pollution engineering. [0003] In recent years, a lot of research has been carried out on the treatment of ammonia nitrogen wastewater at home and abroad. Although many methods can effectively remove ammonia nitrogen, only a few are really used for the treatment of high-concentration ammonia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/20C01C1/242B01D53/78B01D53/58
CPCB01D53/58B01D53/78C01C1/242C02F1/20C02F9/00C02F2101/16C02F1/66C02F1/52B01D2251/506Y02P20/129Y02A50/20
Inventor 夏俊方方小琴王学健潘文刚韩粒
Owner SHANGHAI JINGYU ENVIRONMENT ENG
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