Filler matrix for treating landfill leachate, and application thereof

Abstract

The invention provides a filler matrix for treating landfill leachate, and an application thereof. The filler matrix comprises a primary filler matrix, waste iron scraps and an adsorbent material; theprimary filler matrix is prepared by mixing mineralization wastes with ceramsite and culturing the obtained mixture in a nitrifying bacterial medium; and the primary filler matrix contains Pseudoxanthomonas, Sphingomonas, Phytophthora and Hyphomicrobiaceae microorganisms. The functional microorganisms are quickly attached to the surface of the ceramsite by culturing, go through a porous structure, and enter the ceramsite, so the functional microorganisms are rapidly enriched, and the subsequent efficient removal of contaminants is benefited; and the ceramsite, the adsorption material and waste iron scraps in the filler matrix can increase the skeleton structure of the matrix, so the sedimentation and compaction induced blocking phenomenon of a filter bed in the working process is effectively avoided, and the hydraulic shock resistance in the working process is significantly improved. The invention also provides the filter bed. The filter bed uses the filler matrix to effectively improve the blocking problem and effectively reduce COD and ammonia nitrogen in the leachate.

Description

technical field

[0001] The invention relates to the technical field of organic wastewater treatment, in particular to a filler matrix for treating landfill leachate and its application. 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 of ammonia nitrogen and organic matter, complex components, and a large amount of "carcinogenic, teratogenic, mutagenic" compounds and heavy metals. Great harm. 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 development of economic growth and environmental protection, and enhance support and construct...

Examples

Embodiment 1

[0046] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0047] 1) Select ore with a moisture content of 20% that has been buried in the landfill for 5 to 15 years, and after removing stones with particles larger than 10mm, broken glass, rubber and plastic that has not been fully degraded, wooden sticks, paper, etc. The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0048] 2) Choose an ellipsoid, with a particle size of 13mm and a bulk density of 1.5g / cm 3 , ceramsite with a porosity of 0.7;

[0049] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:7, 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. , complete the primary packing matrix; the abundances of Pseudoxanthomonas, Sphingomonas, Comamon...

Embodiment 2

[0054] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0055] 1) Select the mine that has been buried in the landfill for 15 to 20 years, and after removing stones with particles larger than 10mm, broken glass, rubber and plastic that has not been fully degraded, wooden sticks, paper and other debris, the ore with a moisture content of 20% The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0056] 2) Choose an ellipsoid shape with a particle size of 6mm and a bulk density of 0.9g / cm 3 , ceramsite with a porosity of 0.3;

[0057] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:3, soak and stir in the nitrifying bacteria culture medium for 90 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well. , complete the primary packing matrix; the abundances of Pseudoxanth...

Embodiment 3

[0062] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0063] 1) Select ore that has been buried in the landfill for 25 to 40 years, and remove stones with particles larger than 10mm, broken glass, incompletely degraded rubber and plastic, wooden sticks, paper and other debris, and the ore with a moisture content of 30% The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0064] 2) Choose an ellipsoid shape with a particle size of 10mm and a bulk density of 1.2g / cm 3 , ceramsite with a porosity of 0.5;

[0065] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:5, soak and stir in the nitrifying bacteria culture medium for 100 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well. , complete the primary packing matrix; the abundances of Pseudoxanthomonas, Sphingomon...

technical field

[0001] The invention relates to the technical field of organic wastewater treatment, in particular to a filler matrix for treating landfill leachate and its application. 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 of ammonia nitrogen and organic matter, complex components, and a large amount of "carcinogenic, teratogenic, mutagenic" compounds and heavy metals. Great harm. 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 development of economic growth and environmental protection, and enhance support and construct...

Examples

Embodiment 1

[0046] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0047] 1) Select ore with a moisture content of 20% that has been buried in the landfill for 5 to 15 years, and after removing stones with particles larger than 10mm, broken glass, rubber and plastic that has not been fully degraded, wooden sticks, paper, etc. The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0048] 2) Choose an ellipsoid, with a particle size of 13mm and a bulk density of 1.5g / cm 3 , ceramsite with a porosity of 0.7;

[0049] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:7, 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. , complete the primary packing matrix; the abundances of Pseudoxanthomonas, Sphingomonas, Comamon...

Embodiment 2

[0054] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0055] 1) Select the mine that has been buried in the landfill for 15 to 20 years, and after removing stones with particles larger than 10mm, broken glass, rubber and plastic that has not been fully degraded, wooden sticks, paper and other debris, the ore with a moisture content of 20% The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0056] 2) Choose an ellipsoid shape with a particle size of 6mm and a bulk density of 0.9g / cm 3 , ceramsite with a porosity of 0.3;

[0057] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:3, soak and stir in the nitrifying bacteria culture medium for 90 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well. , complete the primary packing matrix; the abundances of Pseudoxanth...

Embodiment 3

[0062] A packing matrix for treating landfill leachate, the preparation process is as follows:

[0063] 1) Select ore that has been buried in the landfill for 25 to 40 years, and remove stones with particles larger than 10mm, broken glass, incompletely degraded rubber and plastic, wooden sticks, paper and other debris, and the ore with a moisture content of 30% The abundance of Pseudomonas, Sphingomonas, Comamonadaceae and Hyphomicrobiaceae in the mineralized garbage was as high as 12.73%, 12.29%, 8.82% and 6.40%.

[0064] 2) Choose an ellipsoid shape with a particle size of 10mm and a bulk density of 1.2g / cm 3 , ceramsite with a porosity of 0.5;

[0065] 3) Mix the mineralized waste and ceramsite at a mass ratio of 1:5, soak and stir in the nitrifying bacteria culture medium for 100 seconds, and mix well; every two days, replace with fresh nitrifying bacteria culture medium and mix well. , complete the primary packing matrix; the abundances of Pseudoxanthomonas, Sphingomon...

Images