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Deep purification treatment process based on landfill leachate membrane

A landfill leachate and deep purification technology, which is applied in the direction of contaminated groundwater/leachate treatment, anaerobic digestion treatment, special compound water treatment, etc., can solve the problems of ecological environment and human health risks, and is beneficial to removal, cost reduction effect

Inactive Publication Date: 2021-01-22
HEFEI BAIYUN ENVIRONMENTAL SANITARY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the emission standards of the "Pollution Control Standards for Domestic Waste Landfill Sites" (GB16889-2008), the current membrane treatment technology can effectively improve the quality of the effluent water, which has obvious advantages, making it meet the discharge standards. , the separated landfill leachate is high-concentration organic wastewater, which contains a large amount of organic pollutants and heavy metal ions (Zn 2+ 、Cu 2+ 、Ni 2+ and Pt 2+ etc.), etc., if it is not dealt with reasonably and effectively
It is bound to have great risks to the ecological environment and human health

Method used

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  • Deep purification treatment process based on landfill leachate membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: (1) Landfill leachate influent COD is 250mg / L, and ammonia nitrogen is 30mg / L, plant ash adjusts pH to be 7, and landfill leachate is input in activated sludge, carries out microbial degradation landfill leachate under aerobic conditions The organic matter in the reaction for 2 hours, the energy generated is used to synthesize new activated sludge cells, and at the same time obtain the primary treatment liquid;

[0025] (2) plant ash to adjust the pH of the primary treatment solution to 7, heat the leachate to 30° C., transport it into the aerobic MBR membrane tank, and carry out oxidation reaction with ammonia. The reaction time is 0.5 hours to obtain the secondary treatment solution containing nitrate;

[0026] (3) The secondary treatment solution is injected into the anoxic reaction tank, carbon source is added, and reacted for 0.5 hours. The nitrate is denitrified to generate ammonia gas, and the tertiary treatment solution is obtained. At the same time...

Embodiment 2

[0030] Embodiment 2: (1) Landfill leachate influent COD is 300mg / L, and ammonia nitrogen is 50mg / L, plant ash adjusts pH to be 7.5, and landfill leachate is input in activated sludge, carries out microbial degradation landfill leachate under aerobic conditions The organic matter in the reaction for 2 hours, the energy generated is used to synthesize new activated sludge cells, and at the same time obtain the primary treatment liquid;

[0031] (2) plant ash to adjust the pH of the primary treatment solution to 7.5, heat the leachate to 35° C., transport it into the aerobic MBR membrane tank, and carry out the oxidation reaction of ammonia. The reaction time is 0.5 hours to obtain the secondary treatment solution containing nitrate;

[0032] (3) The secondary treatment solution is injected into the anoxic reaction tank, carbon source is added, and reacted for 1 hour. The nitrate denitrification produces ammonia gas, and the tertiary treatment solution is obtained. At the same tim...

Embodiment 3

[0036] Embodiment 3: (1) landfill leachate influent COD is 320mg / L, and ammonia nitrogen is 35mg / L, plant ash adjusts pH to be 8, and landfill leachate is input in activated sludge, carries out microbial degradation landfill leachate under aerobic conditions The organic matter in the reaction for 2.5 hours, the energy generated is used to synthesize new activated sludge cells, and at the same time obtain the primary treatment liquid;

[0037] (2) plant ash to adjust the pH of the primary treatment solution to be 8, heat the leachate to 40° C., transport it into the aerobic MBR membrane tank, and carry out oxidation reaction with ammonia. The reaction time is 1.2 hours to obtain the secondary treatment solution containing nitrate;

[0038] (3) The secondary treatment solution is injected into the anoxic reaction tank, carbon source is added, and reacted for 1.5 hours. The nitrate is denitrified to generate ammonia gas, and the tertiary treatment solution is obtained. At the same...

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Abstract

The invention relates to a deep purification treatment process based on a landfill leachate membrane, which comprises the following steps: (1) inputting landfill leachate into activated sludge, and carrying out microbial degradation on organic matters in the landfill leachate under aerobic conditions to obtain primary treatment liquid; (2) conveying the primary treatment liquid into an aerobic MBRmembrane tank, and carrying out an oxidation reaction on ammonia to obtain a secondary treatment liquid containing nitrate; (3) injecting the secondary treatment liquid into an anoxic reaction tank,and carrying out denitrification to obtain a tertiary treatment liquid; (4) carrying out electrolytic dephosphorization on the tertiary treatment liquid to obtain aluminum ions generated by electrodeelectrolysis and phosphate ions in the sewage to generate precipitates and a fourth-stage treatment liquid containing a small amount of phosphorus; (5) adjusting the pH value of the fourth-stage treatment liquid by plant ash, and performing biological phosphorus removal to obtain a fifth-stage treatment liquid; and (6) carrying out electro-deposition reaction on the five-stage treatment liquid toobtain an electroplated alloy plate and final effluent.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a deep purification treatment process based on a garbage leachate membrane. [0002] technical background [0003] With the increasing environmental pressure, domestic garbage has brought a lot of inconvenience to people's lives. The treatment of domestic garbage has been widely concerned by people. The degradation of domestic garbage is gradually entering people's lives. Landfill treatment produces large quantities of environmentally damaging organic wastewater, commonly referred to as leachate. According to the emission standards of the "Pollution Control Standards for Domestic Waste Landfill Sites" (GB16889-2008), the current membrane treatment technology can effectively improve the quality of the effluent water, which has obvious advantages, making it meet the discharge standards. , the separated landfill leachate is high-concentration organic wastewater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/10C02F103/06
CPCC02F9/00C02F1/66C02F3/12C02F3/28C02F1/461C02F3/34C02F2305/06C02F2101/105C02F2103/06
Inventor 吴义海
Owner HEFEI BAIYUN ENVIRONMENTAL SANITARY EQUIP