Processing method for domestic garbage leachate

A technology for landfill leachate and domestic waste, which is applied in the field of domestic waste leachate treatment, and can solve the problems of reduced effective utilization of oxygen in aerobic pools, failure to fully consider the heavy metal components of urban waste, and measures to remove ammonia nitrogen, etc.

Inactive Publication Date: 2009-02-04
深圳市百斯特环保工程有限公司
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Problems solved by technology

[0016] (1) After the sewage is fully regulated in the regulating tank, the pretreatment step is carried out. This pretreatment step does not fully consider the heavy metal components contained in the municipal waste, and does not consider the chemical reaction to remove the heavy metal components;
[0017] (2) Before biochemical treatment, the high concentration of ammonia nitrogen in th

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  • Processing method for domestic garbage leachate
  • Processing method for domestic garbage leachate

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Embodiment Construction

[0041] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0042] The specific embodiment is a garbage leachate sewage treatment process of a garbage incineration power plant, and the daily garbage processing capacity of the power plant is 1200 tons. The leachate produced by garbage dumping is 300 tons per day. This leachate is a kind of high-concentration organic sewage, containing high-concentration ammonia nitrogen, organic matter and other pollutants. In this embodiment, when the landfill leachate enters the system, the peak value of CODGr (chemical oxygen demand) reaches 70000 mg / L, the peak value of BOD5 (biochemical oxygen demand five days) reaches 30000 mg / L, and the peak value of SS (suspended solids) reaches 6000 mg / L. L, the average value is around 3000mg / L, and the peak value of ammonia nitrogen reaches 2000mg / L.

[0043] like figure 2 , The landfill leachate is first collected through ...

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Abstract

The invention discloses a treatment method of domestic landfill leachate, the treatment method comprises the following steps: the landfill leachate is fully regulated in a regulation tank and then carries out the pre-treatment step; part of ammonia stripping is firstly carried out, then the anaerobic treatment and the aerobic treatment are carried out; sewage after the aerobic treatment enters into an MBR membrane biological reaction tank; the sewage is carried out the MBR membrane treatment in the MBR membrane biological reaction tank; the outlet water after the MBR membrane treatment is carried out the deep treatment (ultrafiltration, nanofiltration); the clean water enters into a discharge tank to carry out the qualified discharge; the nanofiltration concentrated water enters into an ozone contact tank; the concentrated water carries out the ozone oxidation reaction in the ozone contact tank; and the water after the ozone oxidation reaction enters into the discharge tank to carry out the qualified discharge. As the concentrated water is further carried out the ozone oxidation reaction after the deep treatment, organic matters are degraded through the antivirus, the fading and other oxidation roles of the ozone, thereby leading the water after the treatment to achieve the qualified discharge.

Description

technical field [0001] The invention relates to a domestic garbage treatment technology, in particular to a treatment method for domestic garbage leachate. Background technique [0002] 1. Generation of domestic waste leachate: [0003] At present, the treatment methods of urban domestic waste mainly include incineration and landfill. No matter which method is used to treat waste, landfill leachate will be produced. Compared with urban domestic sewage and industrial waste water, leachate of domestic waste has a more obvious The characteristics, that is, complex composition, large and non-periodic changes in water quality and quantity, undoubtedly bring great difficulties to its effective and stable treatment. [0004] 2. Characteristics of leachate: [0005] Leachate belongs to high concentration organic wastewater. In general, the CODcr concentration range in landfill leachate is 20000-70000mg / L, the biological oxygen demand BOD5 concentration range is 10000-40000mg / L, t...

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Application Information

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IPC IPC(8): C02F9/14C02F1/20C02F1/52C02F3/28C02F3/02C02F1/44C02F1/78
CPCY02W10/10
Inventor 曾胜学
Owner 深圳市百斯特环保工程有限公司
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