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Method for processing percolation liquid of domestic garbage

A technology of domestic garbage and treatment method, applied in the field of domestic garbage leachate treatment, can solve the problems of large fluctuation of leachate water quality, difficult to maintain stability of the system, and high concentration of organic matter, achieve optimal connection combination and optimal control technology, and strengthen phosphorus removal. Denitrification effect and high treatment efficiency

Inactive Publication Date: 2010-05-12
无锡惠联科轮环保技术发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) The water quality of the leachate fluctuates greatly, the biodegradability is poor, the content of heavy metals is high, and the chroma is large
[0003] Due to the large changes in the leachate water quality of domestic waste incineration plants, various types of pollutants, high concentration of organic matter, and great difficulty in treatment, conventional treatment methods not only have high treatment costs, but also make it difficult to maintain a stable system

Method used

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  • Method for processing percolation liquid of domestic garbage
  • Method for processing percolation liquid of domestic garbage
  • Method for processing percolation liquid of domestic garbage

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Start-up of the anaerobic reactor: using the biogas lifting reactor as the anaerobic reactor, the biogas lifting reactor is first inoculated with sludge, and the sludge volume is 1 / 2 of the volume of the anaerobic reactor, according to the gradient Gradually increase the load of the anaerobic reactor, carry out sludge domestication, control the temperature at 32°C, and the startup process will take 30 days;

[0031] (2) Inject the leachate from the waste incineration plant into the regulating tank by a lift pump, and after mixing it evenly, adjust the pH to 6.0;

[0032] (3) Inject the leachate in the adjustment tank into the pre-acidification tank for pre-acidification treatment for 6 hours;

[0033] (4) Anaerobic fermentation: the pre-acidified leachate is injected into the biogas lifting reactor by a circulating water pump, and anaerobic fermentation is carried out at a temperature of 32°C, with a residence time of 20 hours and a flow rate of 3 cubic meters per hour , ...

Embodiment 2

[0041] Embodiment 2: A treatment method for leachate of a domestic waste incineration plant, including the following treatment processes:

[0042] (1) Start-up of the anaerobic reactor: using the biogas lifting reactor as the anaerobic reactor, the biogas lifting reactor is first inoculated with sludge, and the sludge volume is 1 / 3 of the volume of the anaerobic reactor, according to the gradient Gradually increase the load of the anaerobic reactor, carry out sludge domestication, control the temperature at 35°C, and the startup process will take 35 days;

[0043] (2) The leachate from the waste incineration plant is injected into the regulating tank by a lift pump, and after stirring, the pH is adjusted to 8.0;

[0044] (3) Pour the leachate in the adjustment tank into the pre-acidification tank for pre-acidification treatment for 8 hours;

[0045] (4) Anaerobic fermentation: the pre-acidified leachate is injected into the biogas lifting reactor by a circulating water pump, and anaer...

Embodiment 3

[0050] Embodiment 3: A treatment method for leachate from a domestic waste incineration plant, including the following treatment processes:

[0051] (1) Start-up of the anaerobic reactor: using the biogas lifting reactor as the anaerobic reactor, the biogas lifting reactor is first inoculated with sludge, and the sludge volume is 2 / 5 of the volume of the anaerobic reactor, according to the gradient Gradually increase the load of the anaerobic reactor, carry out sludge domestication, control the temperature at 34°C, and the startup process will take 32 days;

[0052] (2) The leachate from the waste incineration plant is injected into the regulating tank by a lift pump, and after stirring, the pH is adjusted to 7.0;

[0053] (3) Pour the leachate in the adjustment tank into the pre-acidification tank for pre-acidification treatment for 7 hours;

[0054] (4) Anaerobic fermentation: the pre-acidified leachate is injected into the biogas lifting reactor by a circulating water pump, and ana...

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Abstract

The invention relates to a method for processing the percolation liquid of domestic garbage, which belongs to the technical field of the resource processing of wastes. The process comprises the following steps: injecting percolation liquid into a regulation tank by a lifting pump and regulating the pH; afterwards, injecting the percolation liquid into a pre-acidification tank to carry out pre-acidification processing; then, injecting the percolation liquid after the pre-acidification processing into a methane lifting type reactor by a water circulating pump to carry out anaerobic fermentation; delivering waste water after the anaerobic fermentation to an aerobic tank reactor to carry out oxidation processing; injecting the percolation liquid after the oxidation processing into a three-section oxygenous and aerobic reactor to carry out oxygenous and aerobic multi-stage circulation processing; and finally, injecting the liquid into a settling tank, discharging the generated sludge and outputting water. The process features low running cost, no secondary pollution, automatic control and high processing efficiency.

Description

Technical field [0001] The invention relates to a treatment method for domestic garbage leachate, belonging to the technical field of waste resource treatment. Background technique [0002] According to the basic principles of harmless treatment, reduction and resource utilization of municipal solid waste, waste incineration power generation has become a new direction to solve the problem of municipal solid waste in recent years. Like domestic waste landfills, domestic waste incineration plants are also facing the disposal of waste leachate. The leachate of waste incineration plant is a kind of waste water with very complex composition. The water quality is poor, and its changes are affected by factors such as waste composition, waste water content, waste body temperature, and rainfall infiltration. The water quality of landfill leachate has the following characteristics: (1) The concentration of organic matter is high, among which humic acid is a macromolecular product synthesi...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/66
Inventor 阮文权赵子建
Owner 无锡惠联科轮环保技术发展有限公司
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