Zero emission treatment system and process for landfill leachate concentrated liquor

A technology of landfill leachate and treatment system, applied in the field of landfill leachate treatment system, can solve the problem of high cost and achieve the effects of efficient removal, feasible technology and low operation cost

Pending Publication Date: 2018-08-07
GUANGZHOU SINOVAST ENERGY ENVIRONMENT GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the ozone oxidation method is relatively high, but generally a single advanced oxidation technology cannot stably treat the landfill leachate membrane concentrate to reach the standard discharge range

Method used

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  • Zero emission treatment system and process for landfill leachate concentrated liquor
  • Zero emission treatment system and process for landfill leachate concentrated liquor
  • Zero emission treatment system and process for landfill leachate concentrated liquor

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Experimental program
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Effect test

Embodiment 1

[0041] figure 1 The landfill leachate concentrate zero-emission treatment system shown is an embodiment of the present invention, including a pretreatment system, a conditioning tank 3, an MS anaerobic system, an MBR system, a nanofiltration membrane system, a sludge treatment system, and a system for treating Advanced Oxidative Desalination Conjugate System for Landfill Leachate Concentrate. The pretreatment system, the conditioning tank 3, the MS anaerobic system, the MBR system and the nanofiltration membrane system are connected in sequence to form a landfill leachate treatment subsystem for the treatment of landfill leachate. The conjugate system is connected, and the landfill leachate concentrate produced by the nanofiltration membrane system is sent to the advanced oxidation desalination conjugate system for oxidative desalination treatment.

[0042] The pretreatment system includes a grid tank 1 and a coagulation sedimentation tank 2 which are connected in sequence, a...

Embodiment 2

[0050] figure 2 and image 3 Shown is the process flow of this embodiment.

[0051] (1) Landfill leachate enters the pretreatment system through the pipeline for pretreatment. Influent water quality: COD≤50000mg / L, BOD 5 ≤30000mg / L, NH 3 -N≤1800mg / L, SO 4 2-≤1000mg / L. The landfill leachate first enters the grid tank 1, and the hydraulic screen in the tank can remove the larger particles floating in the leachate, reduce the sedimentation of the suspended matter in the regulating tank 3 and block the subsequent pipes and pumps. The effluent from the grid tank 1 enters the coagulation and sedimentation tank 2, and after coagulation and sedimentation treatment, most of the pollutants such as suspended solids, sulfur ions, and heavy metal ions in the wastewater are removed, and then flows into the adjustment tank 3 by itself. The residence time of the adjustment tank 3 is more than 7d, and under the stirring action of the submerged stirring device, the leachate in different...

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Abstract

The invention discloses a zero emission treatment system and process for landfill leachate concentrated liquor. The system comprises pre-treatment system, an adjusting pond, an anaerobic system, an MBR system, a nanofiltration membrane system and an advanced oxidation desalting conjugated system for treating landfill leachate concentrated liquor; the pre-treatment system, the adjusting pond, the anaerobic system, the MBR system and the nanofiltration membrane system are successively connected to a landfill leachate treatment sub system for treating the landfill leachate; the concentrated liquor emission hole of the nanofiltration membrane system is connected to the advanced oxidation desalting conjugated system, and the landfill leachate concentrated liquor generated by the nanofiltrationmembrane system enters the advanced oxidation desalting conjugated system for oxidizing desalting treatment; the advanced oxidation desalting conjugated system comprises an advance oxidizing reactionpond, a pH adjusting pond, the desalting reaction pond and a precipitation pond successively connected through a pipeline; a water outlet is formed in the upper part of the precipitation tank; the water outlet is connected to the adjusting pond through a pipeline; and the supernate of the precipitation tank reflows to the adjusting pond to be mixed with the landfill leachate for follow-up treatment, so that zero emission of the landfill leachate concentrated liquor is achieved.

Description

technical field [0001] The invention relates to a landfill leachate treatment system, in particular to a landfill leachate concentrate zero-emission treatment system. At the same time, the invention also relates to a zero-discharge treatment process for the landfill leachate concentrate. Background technique [0002] As my country's requirements for discharge restrictions on landfill leachate become more and more strict, the traditional biochemical treatment-based process has been unable to meet the discharge standard requirements. The combined process of "biochemical treatment + membrane advanced treatment" with membrane technology as the core Gradually become the mainstream process of leachate treatment. Among them, the membrane method advanced treatment process produces about 15%-30% of the membrane concentrate. Compared with the original leachate, the concentration of salt and pollutants in the concentrate is higher. Secondary pollution. [0003] At present, the typica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F1/442C02F1/444C02F1/52C02F1/5281C02F1/58C02F1/66C02F1/722C02F3/302C02F3/34C02F2203/006C02F2209/08C02F2305/026
Inventor 刘伟王俊华马宁宁
Owner GUANGZHOU SINOVAST ENERGY ENVIRONMENT GRP
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