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Resource process of inflitration liquid

A biological treatment and leachate technology, applied in chemical instruments and methods, permeation/dialysis water/sewage treatment, combustion methods, etc., can solve the problems of difficult biodegradation, high cost, large investment and operation costs, and achieve the same Secondary pollution, simple process and easy operation

Inactive Publication Date: 2007-02-07
TSINGHUA UNIV
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Problems solved by technology

In fact, this process combination has become one of the best technologies for treating leachate to the first-level discharge standard, but there are also the following main problems: the intercepted concentrated liquid needs further treatment, and the investment and operation costs are relatively large.
At present, the commonly used methods for treating the intercepted concentrated liquid include refilling, concentrated incineration, solidification, and returning to the biological treatment system. Since the organic matter in the concentrated liquid is difficult to biodegrade, the effect of refilling and returning to the biological treatment system is not good, and may cause the system to be difficult. Normal operation, while concentrated incineration, solidification, etc. are expensive

Method used

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  • Resource process of inflitration liquid

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Embodiment Construction

[0012] The resource utilization method of the leachate "biological treatment + nanofiltration process" membrane retentate of the present invention will be further described below in conjunction with the accompanying drawings.

[0013] Firstly, the general idea of ​​the present invention is described. The leachate "biological treatment + nanofiltration process" membrane retentate is difficult to treat, and it contains a relatively high concentration of humic acid. Therefore, the present invention is different from the perspective of treatment, and proposes a resource recovery method, while taking into account the process of resource recovery. Up-to-standard treatment of waste water. The idea of ​​recycling leachate "biological treatment + nanofiltration process" membrane retentate is mainly to further separate the recyclable substances in the concentrated membrane retentate - humic acid and remove salt, while purifying toxic and harmful substances. The specific performance is ...

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Abstract

A process for reclaiming the seeped liquid of garbage includes such steps as biologic treating, filtering by nano-membrane, pumping it in nano-filter system to obtain concentrated liquid and transmitted liquid, and flowing the concentrated liquid in an immersion-combustion evaporating system for concentrating and cleaning to obtain organic liquid fertilizer.

Description

technical field [0001] The invention belongs to the technical field of garbage treatment, and in particular relates to a resource recovery method for extracting humic acid from the leachate "biological treatment + nanofiltration process" membrane intercepted liquid of urban domestic garbage landfill and concentrating it into organic liquid fertilizer. Background technique [0002] The leachate of urban domestic waste landfill is a kind of high-concentration organic wastewater. At present, a large number of leachate treatment projects that have been built in China using conventional processes basically fail to meet the first-level discharge standards in the "Standards for Pollution Control of Domestic Waste Landfills" . The reason is generally believed to be due to the water quality characteristics of the leachate, such as large fluctuations in water quality, decreased biodegradability with the increase of landfill time, high ammonia nitrogen content, and imbalance of nutrien...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/02C02F9/10C05F7/00F23G7/04C02F1/44C02F1/04
CPCY02A40/20
Inventor 聂永丰许玉东岳东北诸毅
Owner TSINGHUA UNIV
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