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Method for removing ammonia nitrogen in sludge landfill percolate by utilizing natural zeolite

A natural zeolite and landfill technology, applied in the field of environmental engineering, can solve the problems of reduced efficiency, increased infrastructure investment and operating electricity costs, increased biological aerobic oxidation time, etc., to achieve low cost, small impact, and good ammonia nitrogen removal effect Effect

Inactive Publication Date: 2008-09-17
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] (3) Biological method: Increase the time of biological aerobic oxidation to reach the nitrification stage. The technology is feasible, but the infrastructure investment and operating electricity cost are much higher than the conventional method, and the efficiency is also reduced due to the low temperature in winter in northern cities
[0010] Due to the complex sewage composition and high concentration of ammonia nitrogen in the leachate of the sludge landfill, it is difficult to remove the ammonia nitrogen in the leachate.

Method used

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  • Method for removing ammonia nitrogen in sludge landfill percolate by utilizing natural zeolite
  • Method for removing ammonia nitrogen in sludge landfill percolate by utilizing natural zeolite
  • Method for removing ammonia nitrogen in sludge landfill percolate by utilizing natural zeolite

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Embodiment 1

[0024] A method for utilizing natural zeolite to remove ammonia nitrogen in sludge landfill leachate, comprising the steps of:

[0025] Add clinoptilolite with a particle size of 0.45 mm to 0.90 mm into the leachate of the sludge landfill, and stir for 2.5 hours.

[0026] Leachate collection method of sludge landfill:

[0027] The sludge is taken from dewatered sludge of a sewage treatment plant in Tianjin, with a moisture content of 70%-80%. Put the sludge into the leachate collection device of the sludge landfill site - the FRP simulated landfill column, the inner diameter of the column is 600mm, the column height is 1800mm, the top is reserved for the sampling port, and the bottom is reserved for the sampling port, and the sampling port is 200mm away from the bottom of the column ,See figure 1 (1 in the figure is the column body of the FRP simulated landfill column, and 2 is the leachate sampling pipe). Fill the bottom of the simulated landfill column with stones 0.15m h...

Embodiment 2

[0031] A method for utilizing natural zeolite to remove ammonia nitrogen in sludge landfill leachate, comprising the steps of:

[0032] Add clinoptilolite with a particle size of 0.45 mm to 0.90 mm into the leachate of the sludge landfill, and stir for 2 hours.

Embodiment 3

[0034] A method for utilizing natural zeolite to remove ammonia nitrogen in sludge landfill leachate, comprising the steps of:

[0035] Add clinoptilolite with a particle size of 0.45 mm to 0.90 mm to the leachate of the sludge landfill, and stir for 4.5 hours.

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Abstract

The invention discloses a method for removing ammonia nitrogen from sludge landfill percolate by using natural zeolite, which comprises the following steps of: adding clinoptilolite of particle diameter 0.45-0.90mm into sludge landfill percolate, and stirring for 2-4.5 hours. The inventive method has the advantages of simple operation, stable and reliable performance, good removal effect of ammonia nitrogen from sludge landfill percolate, easy management, low cost, low influence by ambient conditions, and good regeneration effect of zeolite; and broadens the actual application range of zeolite.

Description

technical field [0001] The invention belongs to the field of environmental engineering, in particular to a method for removing ammonia nitrogen in leachate of sludge landfill by using natural zeolite. Background technique [0002] So far, the process of sewage treatment is the process of pollution transfer. Part of the pollutants in the sewage is discharged with the effluent, and some are transformed into inorganic substances through biochemical processes, and the rest of the pollutants are transferred to the by-product of sewage treatment-sludge through various methods. [0003] Sludge landfill is a compromise option when the sludge cannot be used in agriculture and the cost of incineration is high. It has low investment, large capacity, and quick results. By isolating the sludge from the surrounding environment, it can minimize the threat of sludge to public health and environmental safety. It not only solves the outlet for sludge, but also increases urban construction la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/42
Inventor 赵乐军曹艳芳王洪云王玉秋刘石军曹仲宏
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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