Technique for processing garbage leachate

A technology for landfill leachate and treatment process, applied in the field of high-concentration organic leachate treatment technology, can solve the problems of immature process methods and unsatisfactory effects, and achieve the effects of easy control, low treatment costs, and reduced investment costs.

Active Publication Date: 2009-12-09
BEIJING JIELV ENVIRONMENTAL TECH CO LTD
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Problems solved by technology

[0013] Due to the high concentration of ammonia nitrogen in landfill leachate, the general process of treating landfill leachate adopts physical and chemical treatment, such as dosing coagulation, physical stripping, etc., and the effect is not ideal.
Because domestic research on landfill leachate treatment methods has just started, the above-mentioned processes are still not very mature, and there are still various problems, and further in-depth research is needed

Method used

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  • Technique for processing garbage leachate
  • Technique for processing garbage leachate
  • Technique for processing garbage leachate

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Embodiment Construction

[0024] The process of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 5 Shown, the present invention handles landfill leachate and comprises the following processes:

[0026] 1. Regulate the water quality and quantity of landfill leachate in a regulating tank. The water quality regulation is to remove bulky impurities in the landfill leachate through the grid, and the water volume regulation is to concentrate a large amount of landfill leachate in the regulating tank so that it can be transported to the next step by the water pump for treatment.

[0027] 2. Send the leachate treated in step 1) into an anaerobic tank, and perform anaerobic treatment at 25°C to 45°C (choose different treatment temperatures depending on the concentration and type of pollutants in the leachate). Oxygen treatment time is 50-100 hours (it varies depending on the concentration of pollutants in the leacha...

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Abstract

The invention relates to a landfill leachate treatment process, comprising: (1) adjusting the water quality and water quantity of the landfill leachate in a regulating tank; (2) sending the leachate after water quality and water quantity adjustment into an anaerobic tank, Anaerobic treatment is carried out at 25°C to 45°C, and the anaerobic treatment time is 50 to 100 hours; (3) The biogas generated during the anaerobic treatment is treated, and the sludge generated during the anaerobic reaction is discharged; (4) ) Send the leachate after the anaerobic treatment into the anoxic tank for anoxic treatment, and discharge the sludge generated in the anoxic reaction process; (5) send the leachate after the anoxic treatment into the aerobic tank for aerobic treatment (6) Send the leachate after aerobic treatment to the membrane bioprocessor for solid-liquid separation, and the sludge produced after the treatment will be processed according to the reflux ratio of 3:1 to (7) send the leachate treated by the membrane bioprocessor into an intermediate water tank; (8) perform nanofiltration membrane treatment on the leachate, and the treated effluent is directly metered and discharged or mixed with the water in the intermediate water tank (9) concentrated water after nanofiltration membrane treatment is returned to the adjustment tank.

Description

technical field [0001] The invention relates to a process for treating high-concentration organic leachate, in particular to a process for treating landfill leachate. Background technique [0002] Landfill leachate is a kind of high-concentration organic leachate, which is characterized by high concentration of pollutants and complex components. With the different landfill areas, the degree of pretreatment of each landfill is different, and the season of the same landfill is different. Different landfill landfill time will cause great differences in the quality and quantity of landfill leachate. According to the specific situation of landfill leachate water quality, the applicant can be divided into three categories (as shown in Table 1): [0003] Table 1: Landfill Leachate Water Quality Status [0004] [0005] Landfill leachate is currently recognized worldwide as a severely polluted leachate that is difficult to treat. Landfill leachate has serious environmental pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/44B01D61/14
Inventor 赵凤秋
Owner BEIJING JIELV ENVIRONMENTAL TECH CO LTD
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