Membrane module for removing ammonia nitrogen from landfill leachate and method for removing ammonia nitrogen from landfill leachate

A landfill leachate and membrane module technology, which is applied in the field of ammonia nitrogen treatment in landfill leachate, can solve the problems of excessive ammonia nitrogen content and high treatment costs, and achieve the effects of large flow volume, improved treatment capacity, and fast flow speed

Active Publication Date: 2018-10-23
QINHUANGDAO TONGLIDA WATER TREATMENT EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages that when the amount of ammonia nitrogen in the landfill leachate increases after the amount of ammonia nitrogen in the landfill leachate is increased by using the prior art, the content of ammonia nitrogen in the treated waste water exceeds the standard and the treatment cost is high, and provides a membrane module for removing ammonia nitrogen from landfill leachate and Ammonia nitrogen removal method in landfill leachate

Method used

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  • Membrane module for removing ammonia nitrogen from landfill leachate and method for removing ammonia nitrogen from landfill leachate
  • Membrane module for removing ammonia nitrogen from landfill leachate and method for removing ammonia nitrogen from landfill leachate
  • Membrane module for removing ammonia nitrogen from landfill leachate and method for removing ammonia nitrogen from landfill leachate

Examples

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Effect test

Embodiment 1

[0037] The membrane filament assembly adopting the structure of the present invention uses membrane filaments with a diameter of 500 microns, an inner diameter of 350 microns, and an interval between the membrane filaments and the membrane filaments of 80 microns. The pH value of the landfill leachate is adjusted to 11, the pH value of the acid absorption liquid is 2, the pressure of the landfill leachate is 0.01-0.15MPa, the pressure value of the acid absorption liquid is 0.02-0.15MP, the acid absorption liquid flow rate is 350L / h, and the landfill leachate flow rate 250L / h, the temperature of landfill leachate and acid absorption liquid is 10-50℃, the COD value of landfill leachate is less than or equal to 50,000 mg per liter, the TDS value is less than or equal to 35%, and the ammonia nitrogen content is unlimited. The treated landfill leachate has an ammonia nitrogen content of 15 mg / L.

Embodiment 2

[0039] Using membrane filaments with a diameter of 450 microns and an inner diameter of 300 microns, the PH value of the landfill leachate is 11, the pH value of the acid absorption liquid is 1.5, the pressure of the landfill leachate is 0.07MPa, the pressure value of the acid absorption liquid is 0.09MP, and the acid absorption The liquid flow rate is 210L / h, the landfill leachate flow rate is 350L / h, and the rest are the same as in Example 1. The treated landfill leachate has an ammonia nitrogen content of 14 mg / L.

Embodiment 3

[0041] Using membrane filaments with a diameter of 400 microns and an inner diameter of 250 microns, the PH value of the landfill leachate is 11, the pH value of the acid absorption liquid is 1, the pressure of the landfill leachate is 0.2MPa, the pressure value of the acid absorption liquid is 0.3MP, and the acid absorption The liquid flow rate is 280L / h, the landfill leachate flow rate is 300L / h, and the rest are the same as in Example 1. The treated landfill leachate has an ammonia nitrogen content of 12 mg / L.

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Abstract

The invention provides a film assembly and a method for removing ammonia and nitrogen in garbage leachate. By the aid of the film assembly and the method, shortcomings that the contents of ammonia and nitrogen in treated garbage outlet water exceed standards and the treatment cost is high after the quantities of the ammonia and the nitrogen are increased if garbage leachate is treated in the prior art can be overcome. The film assembly comprises a shell, a first end cover and a second end cover. The first end cover and the second end cover are respectively arranged at two ends of the shell, hollow film wires are arranged in the shell along the length direction of the shell and are arrayed at intervals, an acid absorption liquid outlet is formed in the second end cover, and an acid absorption liquid inlet is formed in the first end cover. The film assembly and the method have the advantages that the garbage leachate can be treated by the aid of the film assembly, and the garbage leachate treatment capacity can be improved as compared with film assemblies with identical specifications; liquid with different degrees of ammonia and nitrogen concentration can be obtained according to requirements, the high-concentration ammonia and the high-concentration nitrogen can be treated, the film assembly and the method are high in treatment efficiency, and precision requirements on pretreatment processes can be lowered.

Description

Technical field [0001] The invention relates to a method for processing ammonia nitrogen in landfill leachate and a device used therefor Background technique [0002] At present, the following methods are usually used for the treatment of ammonia nitrogen in landfill leachate: stripping method, nitrification and denitrification method. The two methods mentioned above have great limitations in the treatment of landfill leachate. For example, the stripping method is not only inefficient and easy Cause local pollution or secondary pollution, which makes the subsequent process environmental protection burden heavy; nitrification and denitrification method will not work normally when the ammonia nitrogen value reaches 4000mg / L. Therefore, the value of ammonia nitrogen in the influent is limited, which makes the garbage disposal Liquid requirements are high and strict pretreatment is required, so the overall treatment efficiency is relatively low. At present, most landfills and waste ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44B01D63/02C02F101/16
CPCB01D63/025B01D2313/21C02F1/44C02F2101/16C02F2103/06
Inventor 罗军杰范立新孙洋健
Owner QINHUANGDAO TONGLIDA WATER TREATMENT EQUIP
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