Landfill leachate treatment system and treatment method thereof

A technology of landfill leachate and a treatment method, which is applied in landfill leachate treatment system and its treatment field, can solve problems such as pollution and threats to the health of surrounding people, and achieves reduction of secondary pollution, easy management and maintenance, and improved treatment efficiency. The effect of efficiency

Pending Publication Date: 2022-04-22
GUANGDONG TAIQUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is directly discharged into the environment without treatment, it will cause serious pollution to the local surface water and gro

Method used

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  • Landfill leachate treatment system and treatment method thereof
  • Landfill leachate treatment system and treatment method thereof
  • Landfill leachate treatment system and treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] A landfill leachate treatment system, with reference to figure 1 , according to the treatment sequence of leachate, it includes pretreatment unit, biochemical oxidation unit, advanced oxidation unit and full quantitative treatment unit. The discharge of leachate is irregular, and the water quality is also significantly different. Therefore, before the leachate enters the treatment system, it flows into the adjustment tank first, and in the adjustment tank, it undergoes residence, deflection, aeration and mixing to stabilize the water volume and water quality of the leachate. state.

[0064] The pretreatment unit includes a coagulation sedimentation tank and a stripping tower which are connected by pipelines in turn. The water outlet is connected to the advanced oxidation unit. By adding a composite flocculant into the coagulation sedimentation tank, the particles that are difficult to settle in the water are aggregated to form colloids, and then combined with impuriti...

Embodiment 2-5

[0102] A landfill leachate treatment method, the difference from Example 1 is that in step 1),

[0103] The amount of input of chitosan quaternary ammonium salt, natron, polydimethyldiallyl ammonium chloride, silicone defoamer, hydroxyethyl cellulose, and activated carbon is different;

[0104] The choice and amount of additives are different;

[0105] The pH is different, and the choice of pH regulator is different.

[0106] In step 2), the pH is different;

[0107] Step 01) and step 03) have different temperatures.

[0108] The specific parameters are shown in Table 2.

[0109] Table 2

[0110]

Embodiment 6

[0112] A landfill leachate treatment method, the difference from Example 5 is that the auxiliary agent is that fly ash and diatomaceous earth are mixed in a ratio of 1:0.5 by weight, that is, the input amount of fly ash is 5.33kg, The input amount of diatomaceous earth is 2.67kg.

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Abstract

The invention relates to the field of landfill leachate, in particular to a landfill leachate treatment system and a treatment method thereof. The landfill leachate treatment system comprises a pretreatment unit, a biochemical oxidation unit, an advanced oxidation unit and a full-quantification treatment unit, the pretreatment unit comprises a coagulative precipitation tank and an air stripping tower which are connected in sequence; the biochemical oxidation unit comprises a first-stage anoxic tank, a first-stage aerobic tank and a first-stage sedimentation tank which are connected in sequence; the advanced oxidation unit comprises a first-stage electro-Fenton tank, a second-stage anoxic tank, a second-stage aerobic tank, a second-stage sedimentation tank, an MBR (Membrane Bioreactor) tank and a second-stage electro-Fenton tank which are connected in sequence; the full-quantification processing unit comprises a BAF pool, and the BAF pool is respectively connected with the secondary electro-Fenton pool and the drainage pool. The landfill leachate treatment system has the advantages that the landfill leachate is treated, and the emission standard is met.

Description

technical field [0001] The present application relates to the field of landfill leachate, more specifically, it relates to a landfill leachate treatment system and a treatment method thereof. Background technique [0002] At present, domestic waste disposal methods mainly include sanitary landfill, composting and incineration. Theoretically speaking, garbage composting is a very good way of recycling garbage, which can realize the reduction and harmlessness of garbage at the same time. But in fact, there are many specific problems in the production and promotion of waste composting, and the cost of composting production is relatively high. [0003] Compared with composting and landfilling, incineration technology has better effects on waste reduction, recycling, and harmlessness. The amount of waste residue after incineration is less, and the heat generated by incineration can be used for power generation. However, a certain amount of high-concentration leachate will also ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/52C02F1/54C02F1/56C02F103/06
CPCC02F9/00C02F1/5236C02F1/56C02F1/545C02F2103/06C02F1/20C02F3/302C02F3/1268C02F1/4672C02F2305/026C02F1/66
Inventor 王诗文谢兵
Owner GUANGDONG TAIQUAN ENVIRONMENTAL PROTECTION TECH CO LTD
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