Landfill leachate membrane concentrated solution treatment process

A technology for landfill leachate and membrane concentration, which is applied in the treatment of polluted groundwater/leachate, osmotic/dialysis water/sewage treatment, water/sewage treatment, etc., to reduce costs, improve recycling rate, and enhance activity.

Active Publication Date: 2020-05-19
YUEYANG FOREST & PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a treatment process for landfill leachate membrane concentrate, which simplifies the process flow, so that the percolation membrane concentrate can be effectively discharged into non-polluting water bodies, and the adsorption materials and organic solvents in the treatment process can be recycled, significantly Reduce the cost of percolation membrane concentrate treatment; improve the recycling rate of treated materials; solve the difficult problem of leachate membrane concentrate treatment with complex composition, fundamentally realize the full treatment of concentrate and maximize the utilization of resources, making the whole The continuous operation of the treatment process can improve the efficiency and can be widely used

Method used

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  • Landfill leachate membrane concentrated solution treatment process
  • Landfill leachate membrane concentrated solution treatment process
  • Landfill leachate membrane concentrated solution treatment process

Examples

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Embodiment 1

[0047] A process for treating landfill leachate membrane concentrate, comprising the following steps:

[0048] S1. Adding adsorption material: the leachate membrane concentrate is adsorbed by the adsorption material. After the leachate membrane concentrate is adsorbed, the effluent enters the biochemical treatment and is discharged after reaching the standard; the adsorption material includes macroporous resin and dialdehyde containing various active groups Modified dopamine macroporous resin. The adsorption material in S1 adopts multi-stage countercurrent adsorption layer by layer. The adsorption material in S1 is packed by columns, the filling rate is 85%, and the method of one for use and one for standby is adopted.

[0049] The microorganisms used in the biochemical treatment process are highly salt-tolerant strains.

[0050] S2. Add organic solvent and recover the adsorption material: after the organic matter adsorbed in the adsorption material reaches saturation, add a...

Embodiment 2

[0055] A process for treating landfill leachate membrane concentrate, comprising the following steps:

[0056] S1. Adding adsorption material: Adsorb the leachate membrane concentrate through the adsorption material. After the leachate membrane concentrate is adsorbed, the effluent enters the biochemical treatment and is discharged after reaching the standard; the adsorption material includes macroporous resin containing various active groups, dialdehyde The modified dopamine macroporous resin and aminated polyethylene glycol and pyromellitic anhydride are cross-linked and modified by dialdehyde polysaccharides, and are polymer adsorption materials synthesized by thermal condensation polymerization. The adsorption material in S1 adopts multi-stage countercurrent layer-by-layer adsorption, and the multi-stage counter-current layer-by-layer adsorption is 3-stage countercurrent adsorption; the adsorption material in S1 is filled in tanks, the filling rate is 50%, and the method of...

Embodiment 3

[0061] A process for treating landfill leachate membrane concentrate, comprising the following steps:

[0062] S1. Adding adsorption material: Adsorb the leachate membrane concentrate through the adsorption material. After the leachate membrane concentrate is adsorbed, the effluent enters the biochemical treatment and is discharged after reaching the standard; the adsorption material includes macroporous resin containing various active groups, dialdehyde Modified dopamine macroporous resin, aminated polyethylene glycol and pyromellitic anhydride are cross-linked and modified by dialdehyde polysaccharide, and are polymer adsorption materials synthesized by thermal condensation polymerization. The adsorption material in S1 adopts multi-stage countercurrent layer-by-layer adsorption, which is 5-stage countercurrent layer-by-layer adsorption. The adsorption material in S1 is filled with column and tank at the same time, and the filling rate of both column and tank is 100%.

[006...

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Abstract

The invention belongs to the technical field of sewage treatment in the environmental protection industry, and particularly relates to a landfill leachate membrane concentrated solution treatment process which comprises the following steps: S1, adding an adsorbing material, S2, adding an organic solvent to recover the adsorbing material, S3, evaporating and recovering, and S4, treating refractoryorganic matters. According to the method, the landfill leachate membrane concentrated solution is adsorbed by adsorption resin and then is treated by a biochemical treatment process to be discharged after reaching the standard; the adsorption saturated adsorbing material is desorbedthrough theorganic solvent, so that the recycling of the adsorbingmaterial is ensured; desorbedrefractory organic matters and the organic solvent are separated through an evaporation process, the organic solvent is recycled, the refractory organic mattersare taken as raw materials of a product takinghumic acid as araw material or is sprayed back to an incinerator to be treated, and resource utilization is achieved. According to the invention, the treatment problem of leachate membrane concentrated solution withcomplex composition is solved, and the total treatment and resource utilization maximization of the concentrated solution are fundamentally realized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in the environmental protection industry, and in particular relates to a process for treating landfill leachate membrane concentrate. Background technique [0002] The leachate produced during the landfill and incineration of garbage is a kind of high-concentration and difficult-to-treat organic wastewater with large changes in water quality and quantity, high ammonia nitrogen content, and complex components. With the improvement of national environmental protection requirements, leachate treatment effluent requirements meet the requirements of the "Standards for Pollution Control of Domestic Waste Landfill Sites" (GB16889-2008). The traditional advanced treatment adopts the combined technology of nanofiltration and reverse osmosis. However, after the advanced treatment of landfill leachate by nanofiltration and reverse osmosis system, a large amount of membrane concentrate will be produc...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30C02F103/06
CPCC02F1/04C02F1/285C02F1/44C02F3/34C02F9/00C02F2101/30C02F2103/06
Inventor 徐辉张永泽张伟华陈金心
Owner YUEYANG FOREST & PAPER CO LTD
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