Treatment method of landfill leachate based on GY-4 type filler matrix
A landfill leachate, GY-4 technology, applied in the field of landfill leachate treatment, can solve the problems of high power energy, high concentration water hardness, high operation and maintenance costs, and achieve the effect of improving hydraulic impact resistance and avoiding clogging
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Embodiment 1
[0053] GY-4 type packing matrix, the preparation process is as follows:
[0054] 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%.
[0055] 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;
[0056] 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
[0059] A filter bed, the filter bed, from top to bottom, sequentially includes a water distribution pipe, an oxide layer, a filler matrix layer made of the filler matrix described in Example 1, a coal gangue layer, a supporting layer and a drainage pipe, and Ventilation pipe; the drainage pipe is arranged between the supporting layers; the drainage pipe is provided with collecting holes; the ventilation pipe is vertically and indirectly distributed inside the filter bed; the upper end of the ventilation pipe is higher than the surface of the filter bed, The lower end passes through the filler matrix layer and extends to the supporting layer;
[0060] The gangue particle size of the gangue layer is 1-4mm;
[0061] The oxide layer includes barbed wire, activated carbon and palm bedding; the oxide layer is prepared by covering the barbed wire with activated carbon in the palm bedding after pickling, water washing, and drying; the pickling adopts Dilute hydrochloric acid can remo...
Embodiment 3
[0065] The anaerobic biological pool, from top to bottom, sequentially includes a water distribution pipe, a filler matrix layer composed of a microbial immobilized filler matrix, a supporting layer and a drainage pipeline; the drainage pipeline is arranged between the supporting layers; the drainage The pipeline is provided with collection holes;
[0066] The supporting layer includes mineral condensates such as crushed stones, pebbles or gravels; the particle size of the mineral condensates (crushed stones, pebbles or gravels, etc.) in the supporting layer is 1 to 5 cm;
[0067] Preferably, the height of the anaerobic biological pool is 0.9m-1.5m; the thickness of the filler matrix layer is 0.6m-1.0m; the thickness of the supporting layer is 30-50cm.
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Abstract
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