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Method for processing percolation liquid of domestic garbage

A domestic waste and treatment method technology, which is applied in the field of domestic waste leachate treatment, can solve the problems of large fluctuations in leachate water quality, difficulty in maintaining stability in the system, and high heavy metal content, and achieve optimal connection combination and optimal control technology, and strengthen phosphorus removal. High denitrification effect and high treatment efficiency

Inactive Publication Date: 2011-05-18
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

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Experimental program
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Effect test

Embodiment 1

[0030] (1) Start-up of the anaerobic reactor: take the biogas lifting reactor as the anaerobic reactor, first inoculate the biogas lifting reactor with sludge, the volume of the sludge 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 start-up process takes 30 days;

[0031] (2) Inject the leachate of the waste incineration plant into the adjustment tank by the lift pump, and after stirring 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 leachate after pre-acidification treatment 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 met...

Embodiment 2

[0041] Embodiment 2: a kind of domestic waste incineration plant leachate treatment method, comprises the following treatment process:

[0042] (1) Start-up of the anaerobic reactor: the biogas lifting reactor is used as the anaerobic reactor, and the biogas lifting reactor is first inoculated with sludge. The volume of the sludge is 1 / 3 of the volume of the anaerobic reactor. Gradually increase the load of the anaerobic reactor, carry out sludge domestication, control the temperature at 35°C, and start-up process takes 35 days;

[0043] (2) Inject the leachate of the waste incineration plant into the adjustment tank by the lift pump, and after stirring evenly, adjust the pH to 8.0;

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

[0045] (4) Anaerobic fermentation: The leachate after pre-acidification treatment is injected into the biogas lifting reactor by a circulating water pump, and anae...

Embodiment 3

[0050] Embodiment three: a kind of leachate treatment method of domestic waste incineration plant, comprising the following treatment process:

[0051] (1) Start-up of the anaerobic reactor: the biogas lifting reactor is used as the anaerobic reactor, and the biogas lifting reactor is first inoculated with sludge. The volume of the sludge is 2 / 5 of the volume of the anaerobic reactor. Gradually increase the load of the anaerobic reactor, carry out sludge domestication, control the temperature at 34°C, and start-up process takes 32 days;

[0052] (2) Inject the leachate of the waste incineration plant into the adjustment tank by the lifting pump, and after stirring evenly, adjust the pH to 7.0;

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

[0054] (4) Anaerobic fermentation: The leachate after pre-acidification treatment is injected into the biogas lifting reactor by a circulating water pum...

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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, which belongs to the technical field of waste resource treatment. Background technique [0002] According to the basic principles of harmless, volume reduction and recycling of urban domestic waste, waste incineration power generation has become a new direction to solve urban domestic waste in recent years. Like domestic waste landfills, domestic waste incineration plants also face the problem of disposal of landfill leachate. The leachate of waste incineration plants is a kind of waste water with very complex components. The water quality is poor. The change is affected by factors such as waste composition, waste moisture content, waste body temperature, and rainfall infiltration. The water quality of landfill leachate has the following characteristics: (1) The concentration of organic substances is high, among which humic acid is a macromolecular product synthesized by small ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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