Treatment method of landfill leachate

A landfill leachate and treatment method technology, which is applied in the field of landfill leachate treatment, can solve problems such as high operating costs and difficult treatment of deammonization tail gas, and achieve the effect of reducing production costs and reducing the amount of treatment

Active Publication Date: 2012-07-11
北京昊业怡生科技有限公司
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Problems solved by technology

The operation cost of this process is high, and there are probl

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  • Treatment method of landfill leachate
  • Treatment method of landfill leachate
  • Treatment method of landfill leachate

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Embodiment Construction

[0037] The following combination figure 1 and figure 2 , the processing method of landfill leachate of the present invention is described in detail:

[0038] (A) Solid-liquid separation: first pass the leachate through a 10mm grid to remove the floating and bulky substances, and the floating and bulky substances are sent to the landfill for harmless landfill treatment in a closed garbage truck , the sewage obtained is sent to step (B) for processing;

[0039] (B) Anaerobic treatment of sewage: the sewage obtained in step (A) is metered and sent to an anaerobic reactor, and the anaerobic treatment equipment includes an anaerobic reactor and a separation system. The anaerobic reactor is equipped with anaerobic sludge, the content of anaerobic sludge in the sewage is more than 30,000-40,000 mg / liter (weight / volume ratio), and the volume load of chemical oxygen consumption is 15-25kg / m 3 d. The anaerobic reactor is equipped with a stirrer, and the stirring speed is 30-50 rpm,...

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Abstract

The invention relates to a treatment method of a landfill leachate, which comprises the step of treating the landfill leachate by adopting a multi-stage processing method of solid-liquid separation, anaerobic treatment, aerobic treatment, membrane bioreactor treatment, nanofiltration membrane, evaporation, ion exchange and spray drying. Due to the adoption of the treatment method, the problem that the future trouble of difficult treatment is finally generated due to higher and higher ammonia nitrogen and chemical oxygen demand COD in the landfill leachate caused by recharging is solved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment method for landfill leachate. Background technique [0002] Landfill leachate has complex components, not only containing organic pollutants of chemical oxygen demand (CODcr) and biological oxygen demand (BOD5), but also various metals and plant nutrients, such as ammonia nitrogen. Moreover, the concentration of chemical oxygen demand (CODcr) and biological oxygen demand (BOD5) is high, which can reach tens of thousands of milligrams per liter of landfill leachate. In addition, the composition of the landfill leachate also changes with the landfill time. The ratio of BOC / COD in the leachate of the landfill with a landfill time of 3-5 years is relatively high, generally 0.4-0.8, and the concentration of ammonia nitrogen It is around 1000 mg / L; the ratio of BOC / COD of landfill leachate for more than 3-5 years is obviously reduced, generally around 0.2,...

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Application Information

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IPC IPC(8): C02F9/14C02F11/00C02F11/14C02F11/02C05F17/00C05F7/00C01C1/16C02F1/42C02F1/04C02F1/12
CPCY02A40/20Y02E50/30Y02W10/20Y02W30/40
Inventor 于景成田丹靳国良丁雪梅田艺伟桑力维辛凯张有彭建辉李辉成
Owner 北京昊业怡生科技有限公司
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