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Processing method and processing apparatus for garbage leachate

A technology of landfill leachate and treatment method, which is applied in the field of sewage treatment in the discipline of environmental engineering. It can solve the problems of landfill leachate discharge up to standard, high operating costs, and long treatment cycle, etc., and achieve outstanding decolorization effect, reduce treatment cost, and low operating cost. cost effect

Active Publication Date: 2015-07-22
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to overcome the defects of the prior art that it is difficult to discharge the landfill leachate up to the standard, the investment cost is high, the operation cost is high, and the treatment period is long, and a treatment method and equipment for the landfill leachate are provided. The method has the advantages of simple process, low investment cost and operation cost, short treatment period, little impact on the environment, wide application range, long-term stable and reliable treatment effect, small footprint of the treatment equipment, and high degree of automation

Method used

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  • Processing method and processing apparatus for garbage leachate
  • Processing method and processing apparatus for garbage leachate
  • Processing method and processing apparatus for garbage leachate

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Experimental program
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Effect test

Embodiment 1

[0044] The treatment equipment of embodiment 1 landfill leachate:

[0045] Such as figure 1 As shown, the treatment equipment of a landfill leachate provided by the present invention includes a coagulation-sedimentation integrated tank 1, a first water pump 2, an ozone / activated carbon oxidation device 3, and a submerged membrane bioreactor connected in sequence 4 and a second water pump 5; This ozone / activated carbon oxidation device 3 is an ozone oxidation tower 30 provided with an activated carbon packing part 31, and the bottom of this ozone oxidation tower 30 is provided with an ozone oxidation part 320, and these ozone oxidation parts 320 are An ozone diffuser 321 and an ozone generator 322; This activated carbon packing part 31 is located at the middle part of this ozone oxidation tower 30, and the top of this ozone oxidation tower 30 is an outflow part 33; This submerged membrane bioreactor 4 comprises a Membrane bioreaction tank 41 , a membrane module 42 and an aerat...

Embodiment 2

[0049] The treatment method of embodiment 2 landfill leachate

[0050] The water quality components of landfill leachate in a certain place are shown in Table 1.

[0051] Table 1 Landfill leachate influent water quality

[0052]

[0053] The processing method of landfill leachate: adopt the processing equipment of the landfill leachate of embodiment 1 to carry out following steps:

[0054] (1) Coagulation pretreatment: pass the landfill leachate into the coagulation-sedimentation integrated tank 1, add ferric chloride, and the dosage of ferric chloride is based on Fe 3+ Concentration 3.0mmol / L The molar weight of the landfill leachate, carry out the coagulation reaction for 30 minutes, and let it stand for 60 minutes;

[0055] (2) Ozone / activated carbon oxidation treatment: adopt the first water pump 2 to pass the supernatant liquid obtained after the coagulation pretreatment into the ozone / activated carbon oxidation device 3, and carry out the gas-liquid-solid three-phas...

Embodiment 3

[0059] The treatment method of embodiment 3 landfill leachate

[0060] The water quality components of landfill leachate in a certain place are shown in Table 2.

[0061] Table 2 Landfill leachate influent water quality

[0062]

[0063] The processing method of landfill leachate: adopt the processing equipment of the landfill leachate of embodiment 1 to carry out following steps:

[0064] (1) Coagulation pretreatment: pass the landfill leachate into the coagulation-sedimentation integration pool 1, add polyferric sulfate, and the consumption of polyferric sulfate is based on Fe 3+ Concentration 2.0mmol / L The molar weight of the landfill leachate, carry out the coagulation reaction for 25min, and let it stand for 50min;

[0065] (2) Ozone / activated carbon oxidation treatment: adopt the first water pump 2 to pass the supernatant obtained after the coagulation pretreatment into the ozone / activated carbon oxidation device 3, and carry out the gas-liquid-solid three-phase rea...

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Abstract

The invention discloses a processing method and a processing apparatus for garbage leachate. The processing method comprises: (1) introducing the garbage leachate into a coagulation reaction tank, adding a soluble ferric salt coagulant for a coagulation reaction, standing; (2) introducing the supernatant obtained after coagulation pretreatment into an ozone / active carbon oxidation device for a gas-liquid-solid three-phase reaction, wherein the ozone / active carbon oxidation device is filled with active carbon and communicated with ozone; and (3) introducing the flow-out liquid subjected to oxidation processing by ozone / active carbon into a membrane bioreactor, performing aerobic / anoxic alternative processing by employing intermittent aeration, performing membrane separation and making water flow out. The processing method provided by the invention is low in cost, helps to improve the biodegradability of the garbage leachate, and helps to realize effective removal of ammonia nitrogen, COD, chroma and the like at the same time; and the leachate is deeply purified, the decolouring effect is substantial, and the sensory effect is good. The processing apparatus provided by the invention is small in land occupation area, low in operation cost and high in stability and the processing effect is long-term, stable and reliable.

Description

technical field [0001] The invention relates to the technical field of sewage treatment in the discipline of environmental engineering, in particular to a treatment method and equipment for landfill leachate. Background technique [0002] As an economical and effective urban waste disposal method, sanitary waste landfill has been adopted by most countries in the world so far. However, if the resulting landfill leachate is not properly disposed of, it will cause serious pollution to the surrounding water and soil. Countries around the world have formulated corresponding measures standards, mandating their efficient handling. For example, my country's "Pollution Control Standards for Domestic Waste Landfill Sites" (GB 16889-2008) stipulates that all existing domestic waste landfills should treat domestic waste leachate by themselves and reach the corresponding water pollution discharge concentration limit. [0003] Landfill leachate is a kind of high-concentration organic was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/78
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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