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Technique and equipment for recycling leachate of garbage

A landfill leachate and process technology, applied in aerobic and anaerobic process treatment, permeation/dialysis water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of failing to meet the second-level or even first-level environmental protection discharge standards To achieve the effect of flexible and effective configuration and guarantee of water quality indicators

Inactive Publication Date: 2008-07-16
张大群
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Problems solved by technology

The above-mentioned prior art landfill leachate treatment process has the following defects: after landfill leachate treatment, it cannot reach the second-level or even first-level environmental protection discharge standard

Method used

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  • Technique and equipment for recycling leachate of garbage

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Embodiment Construction

[0032] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] Fig. 1 is a schematic diagram of device connection of the present invention.

[0034] As shown in Figure 1, the present invention provides a landfill leachate reuse process, the present invention is centered on the desalination of the reverse osmosis system, followed by upflow anaerobic sludge bed process (UASB), continuous water inflow, continuous- Intermittent aeration process (DAT-IAT), ozone oxidation, and membrane bioreactor (MBR) are used as pretreatment to ensure the stable operation of the reverse osmosis system. The specific steps of the landfill leachate reuse process are carried out in sequence as follows:

[0035] 1). Homogenization treatment stage: Let the landfill leachate 1-1 enter the regulating tank 2 for water quality homogenization;

[0036] In the homogenization treatment stage, the purpose is to adjust the water quantity and...

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Abstract

The invention discloses a process for reusing waste leachate and a device thereof. Which comprises a homogenization process stage, an anaerobic process stage, an aerobic process stage 1, an advance oxidization stage, an aerobic process stage 2 and a reverse osmosis desalination stage.The device comprises the following equipments connected in series by pipes in turn: a water regulating tank, a collecting well, an up-flow anaerobic sludge bed reactor, a reaction tank for continuous and interval aerating, an ozonation system, a membrane biological reactor, a middle tank in which a water pump is arranged, a reverse osmosis system in which a pump, a precise filter and reverse osmosis component are arranged as well as a clean water tank.The beneficial effects of the invention lie in that: a plurality of organic matters which are difficult to degrade can be effectively resolved; a whole set of processes such as the anaerobic process, the aerobic process, the advance oxidization process and the microfiltration are used as pretreatments of the reverse osmosis(RO) system and the water quality index fully meets the water quality requirements of the reverse osmosis system. The last desalination is carried out by using reverse osmosis system to ensure the water quality index reused by the leachate.

Description

technical field [0001] The present invention relates to landfill leachate recycling process and its equipment, in particular to the landfill leachate recycling process and its equipment using reverse osmosis desalination and its multi-stage pretreatment. Background technique: [0002] At present, the commonly used technology for waste disposal is landfill technology, which has a simple process, low cost, and can handle various types of waste, which is especially suitable for my country's national conditions. However, leachate is produced during the treatment process of landfill technology, which is a kind of high-concentration wastewater with complex components and is the root cause of secondary pollution. The leachate mainly comes from precipitation and the water contained in the waste itself. The composition of the leachate varies with the local climate, hydrology, landfill time and process. Landfills not only have the problem of difficult biodegradation of landfill leach...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/78C02F1/44
CPCY02A20/131
Inventor 张大群
Owner 张大群
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