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A kind of process method for removing ammonia and chromium from garbage permeate

A technology of waste permeate liquid and process method, which is applied in the field of deamination and chromium removal of waste permeate liquid, can solve the problems of affecting the mass transfer efficiency of the tower, easy blocking of the tower, consumption of precipitant, etc., so as to improve the sedimentation and chromium removal effect and work. Conditions are safe, the effect of reducing the time required

Active Publication Date: 2020-11-10
BEIJING SUN SILVER SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Garbage permeate is a secondary pollutant produced in the process of garbage treatment. Its composition is complex, often containing a large amount of ammonia nitrogen and heavy metals, which is harmful to the environment. A lot of inconvenience in the process of processing
[0003] In the conventional deamination treatment of garbage permeate, especially when steam stripping or stripping is used, due to the complexity of the water quality, the garbage permeate produces a large amount of foam or flocculation during the heat exchange and stripping process, which seriously affects the The mass transfer efficiency of the tower consumes a lot of energy and the ammonia nitrogen in the effluent is not up to the standard. In addition, the tower is easy to block and cannot operate stably for a long time
[0004] At the same time, in the process of dealing with heavy metals, garbage permeate is often treated by chemical precipitation method. However, due to the influence of organic matter in the water quality, the sediment obtained by conventional precipitation method is very easy to form colloid, or because the viscosity of the water quality is large. Settling effect Poor, causing waste permeate to consume excess precipitant

Method used

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  • A kind of process method for removing ammonia and chromium from garbage permeate
  • A kind of process method for removing ammonia and chromium from garbage permeate
  • A kind of process method for removing ammonia and chromium from garbage permeate

Examples

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Comparison scheme
Effect test

Embodiment 1

[0043] The garbage permeate of a factory has a daily treatment capacity of 120t, the ammonia nitrogen content is about 7000mg / L, and the chromium content is 3.2mg / L. The process of the present invention is used to remove ammonia and chromium, and the steam consumption per ton of garbage permeate wastewater treatment is about 50kg, the outlet temperature of the deamination solution is 55°C, the ammonia nitrogen content is 37mg / L, and the chromium content is 0.003mg / L.

Embodiment 2

[0045] The garbage permeate of a factory has a daily processing capacity of 1400t, ammonia nitrogen content of about 3000mg / L, and chromium content of 1.2mg / L. The process of the present invention is used to remove ammonia and chromium, and the steam consumption per ton of garbage permeate wastewater treatment is about 60kg, the outlet temperature of the deammonization solution is 57°C, the ammonia nitrogen content is 12 mg / L, and the chromium content is not detected.

Embodiment 3

[0047] The garbage permeate of a factory has a daily processing capacity of 2200t, ammonia nitrogen content of about 4000mg / L, and chromium content of 1.1mg / L. The process of the present invention is used to remove ammonia and chromium, and the steam consumption per ton of garbage permeate wastewater treatment is about 57kg, the outlet temperature of the deammonization solution was 58°C, the ammonia nitrogen content was 28 mg / L, and the chromium content was not detected.

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Abstract

The invention relates to a refuse leachate deamination and dechromisation process method which specifically comprises the following steps: combining heat exchange, dechromisation and deamination complete equipment to perform deamination and dechromisation by adopting a multistage treatment process. With the process method disclosed by the invention, the refuse leachate is subjected to deamination and dechromisation, and the process has the characteristics of high deamination efficiency, excellent dechromisation effect, operating stability and energy conservation.

Description

technical field [0001] The invention relates to a process method for deamination and chromium removal of garbage permeate, specifically a process method for deamination and chromium removal of garbage permeate by adopting a multi-stage treatment process combined with heat exchange, chromium removal and deamination complete equipment, belonging to the chemical industry and environmental protection field. Background technique [0002] Garbage permeate is a secondary pollutant produced in the process of garbage treatment. Its composition is complex, often containing a large amount of ammonia nitrogen and heavy metals, which is harmful to the environment. A lot of inconvenience is brought in the processing technology. [0003] In the conventional deamination treatment of garbage permeate, especially when steam stripping or stripping is used, due to its complicated water quality, the garbage permeate will produce a large amount of foam or flocculation during the process of heat ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F103/06C02F101/16C02F101/22
CPCC02F1/04C02F1/06C02F1/5236C02F9/00C02F2001/007C02F2101/16C02F2101/22C02F2103/06
Inventor 宋云华刘欣牛晓红陈建铭李正林郝高峰魏玉胜
Owner BEIJING SUN SILVER SCI & TECH
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