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A concentrated solution refilling process

A concentrated liquid and process technology, which is applied in the final disposal process of concentrated liquid, and in the field of landfill leachate concentrated liquid recharge, can solve the problems of difficult operation, high processing cost, and unsatisfactory actual application conditions, and achieve Improve the treatment effect, reduce the operating cost, and accelerate the effect of the stabilization process

Active Publication Date: 2016-01-20
常州市环境卫生管理中心(常州市垃圾分类管理中心)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to regulations and process requirements, the concentrate produced by nanofiltration and reverse osmosis should be treated separately, and can be treated by biological aeration, coagulation sedimentation, activated carbon adsorption, evaporation drying, resin adsorption, micro-electrolysis, incineration, advanced oxidation, etc. methods, but these traditional processing methods are not ideal due to high processing costs or difficult operation.
At present, there is no economical and feasible concentrate treatment technology in the industry

Method used

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Embodiment Construction

[0022] The invention provides a concentrated liquid recharge process, which is used to treat the concentrated liquid produced after biochemical treatment, nanofiltration, reverse osmosis and other membrane separation advanced treatment of landfill leachate, and the concentrated liquid is recharged vertically, horizontally or The way of lateral power recharge is recharged into the packing pile.

[0023] In order to accelerate degradation at the same time of recharging, according to the water quality of the leachate, targeted release of cellulolytic bacteria, protein hydrolytic bacteria, methane bacteria, sugar hydrolytic bacteria, starch hydrolytic bacteria, fat hydrolytic bacteria and pectin hydrolytic bacteria and other microbial bacteria group;

[0024] Moreover, in order to maintain the weak alkaline environment of the heap, alkaline substances such as lime, sodium hydroxide and sodium bicarbonate are added to adjust the pH value.

[0025] Wherein, the mentioned lateral po...

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Abstract

The invention relates to a concentrated liquor recharging technology applicable to a refuse landfill, belonging to the field of environmental protection technology. The concentrated liquor recharging technology concretely comprises the following steps: performing biochemical treatment and depth treatment to refuse leachate to generate concreted liquor, recharging the concentrated liquor into a filler pile in a manner of vertical recharging, horizontal recharging or lateral power recharging, feeding microbial floras of cellulose hydrolysis bacteria, protein hydrolysis bacteria, methane bacteria and the like for accelerated degradation while in recharging, adding lime, sodium hydroxide and other alkaline substances to regulate the pH value, so as to maintain the weak alkali environment of the pile, and recharging the concentrated liquor of the refuse leachate through regulating the control parameters of recharging water quantity, recharging frequency, hydraulic load and the like in unit area. The concentrated liquor recharging technology is very economic and practical for the concentrated liquor of a small-sized and medium-sized refuse landfill, and the concentrated liquor of refuse can be subjected to more environment-friendly, total concentration and harmless treatment by fully utilizing the conditions of the existing refuse landfill.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a concentrated liquid recharge process, especially for the concentrated liquid of landfill leachate after advanced treatment by membrane separation processes such as nanofiltration or reverse osmosis. Degradation, reaching the treatment process for the final disposal of the concentrate. Background technique [0002] It is very difficult to treat the leachate generated during the landfill process of domestic waste. At present, the mainstream treatment process in China is the combined process of "pretreatment + biological treatment + advanced treatment". [0003] Advanced treatment generally adopts membrane separation advanced treatment processes such as nanofiltration and reverse osmosis. Membrane treatment process is a water treatment technology that combines membrane separation unit and biological treatment unit: it is mainly composed of two parts: membrane separ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 史东晓
Owner 常州市环境卫生管理中心(常州市垃圾分类管理中心)
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