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Treatment method of landfill leachate based on GY-3 type filler matrix

A landfill leachate, GY-3 technology, applied in the field of landfill leachate treatment, can solve the problems of fouling of concentrated water reuse equipment, high operation and maintenance costs, low reuse rate of produced water, etc., and achieve good hydraulic conductivity and Permeability, improve the ability to resist hydraulic shock, and reduce the effect of occupying an area

Active Publication Date: 2019-05-21
JIANGXI GAIA ENVIRONMENTAL SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional biological treatment method, there are problems that the foam in the aerobic stage is difficult to control and the organic matter is difficult to degrade, so that the residence time of the entire aerobic stage is long. The water reuse rate can only reach 60%), serious fouling of concentrated water reuse equipment, high power energy and high operation and maintenance costs restrict its application

Method used

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  • Treatment method of landfill leachate based on GY-3 type filler matrix

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] GY-3 type packing matrix, the preparation process is as follows:

[0050] 1) Select the landfill that has been buried for 5 to 40 years, and after removing stones, broken glass, incompletely degraded rubber and plastic, wooden sticks, paper and other debris with particles larger than 10mm, the moisture content is 20 to 36%. mineralized waste; the abundances of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized waste were as high as 12.73%, 12.29%, and 8.82% respectively. % and 6.40%.

[0051] 2) Choose an ellipsoid, with a particle size of 6-13mm and a bulk density of 0.9-1.5g / cm 3 , ceramsite with a porosity of 0.3-0.7;

[0052] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1: (3~7), soak and stir in the nitrifying bacteria culture medium for 150 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well After culturing for 10 days, the primary packing matrix is ​​complete...

Embodiment 2

[0057] The primary filler matrix preparation process is as follows:

[0058] 1) Select the landfill that has been buried for 5 to 40 years, and after removing stones, broken glass, incompletely degraded rubber and plastic, wooden sticks, paper and other debris with particles larger than 10mm, the moisture content is 20 to 36%. mineralized waste; the abundances of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized waste were as high as 12.73%, 12.29%, and 8.82% respectively. % and 6.40%.

[0059] 2) Choose an ellipsoid, with a particle size of 6-13mm and a bulk density of 0.9-1.5g / cm 3 , ceramsite with a porosity of 0.3-0.7;

[0060] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1: (3~7), soak and stir in the nitrifying bacteria culture medium for 150 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well After culturing for 10 days, the primary packing matrix is ​​completed; t...

Embodiment 3

[0063] A filter bed, the filter bed, from top to bottom, sequentially comprises a water distribution pipe, a packing matrix layer made of the packing matrix described in Example 1, a supporting layer and a drainage pipe, and a ventilation pipe, the ventilation pipe Vertically and indirectly distributed inside the filter bed; the upper end of the ventilation pipe is higher than the surface of the filter bed, and the lower end passes through the packing matrix layer and extends to the supporting layer; the drainage pipe is arranged between the supporting layers; There are collection holes; the water distribution pipes are evenly distributed on the surface of the filter bed, distributed in parallel, with an inner diameter of 20mm, and the distance between two water distribution pipes is 1m; the ventilation pipes are evenly distributed in the filter bed, distributed in parallel, with an inner diameter of 10mm, The distance between two ventilation pipes is 1m; the drainage pipes are...

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Abstract

The invention provides a treatment method of landfill leachate based on a GY-3 type filler matrix. The method comprises the following steps: 1) primary biochemical treatment: pretreating the landfillleachate, and treating the pretreated landfill leachate in a filter bed provided with the GY-3 type filler matrix; 2) precipitation treatment: introducing the treated landfill leachate obtained in step 1) into a precipitation tank, performing precipitation, and discharging the obtained precipitate from the bottom of the tank; 3) secondary biochemical treatment: introducing the treated landfill leachate obtained in step 2) to an anaerobic biological tank, and carrying out anaerobic treatment; and 4) filtration treatment: filtering the anaerobic treated wastewater, and discharging the standard-reaching filtered wastewater, wherein the GY-3 type filler matrix contains Pseudoxanthomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae microbes. The treatment method realizes the purificationand discharge of the landfill leachate by degrading organic matters in the landfill leachate with the GY-3 type filler matrix; and the treatment method has the advantages of high efficiency and rapidness in starting of the treatment, short time, stable treatment effect, and simplicity in operation and running.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a treatment method for landfill leachate based on a GY-3 filler matrix. Background technique [0002] At present, the methods of garbage disposal in my country mainly include sanitary landfill, incineration and composting. Among them, sanitary landfill is the main method, but sanitary landfill will produce secondary pollution - landfill leachate. Landfill leachate has a high concentration, complex composition, and a large amount of "carcinogenic, teratogenic, mutagenic" compounds and heavy metals. If not properly treated, it will pollute groundwater and surface drinking water sources, and cause great harm to the environment and human body. Therefore, the development of landfill leachate treatment technology is of great importance to prevent secondary pollution in the process of solid waste treatment in my country, reduce pollutant discharge, achieve coordinated...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/00C02F103/06
Inventor 柴喜林唐崇俭龙先辉刘治功姜楚宽
Owner JIANGXI GAIA ENVIRONMENTAL SCI & TECH CO LTD
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