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Anaerobic/anoxic suspension filler

A technology of suspended packing and high-density polyethylene, which is applied in anaerobic digestion treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve the problem that aeration cannot be used, the effect of suspended packing is affected, and it is not easy to fluidize and other problems, to achieve the effect of convenient production, reasonable design and complete fluidization

Inactive Publication Date: 2018-03-06
JIANGSU YULONG ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the sewage in the anaerobic / anoxic pool is different from the water in the aerobic pool, the suspended filler originally used in the aerobic pool is not easy to fluidize in the anaerobic / anoxic pool, and the anaerobic / anoxic pool cannot use aeration , so that the effectiveness of the suspended filler is greatly affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A suspension filler for anaerobic / anoxic, its main material is high-density polyethylene resin, specific gravity 0.956g / cm 3 . The specific gravity adjustment material is activated calcium carbonate with a specific gravity of 2.000g / cm 3 . Microbial nutrients include inorganic elements: Fe3O4 powder and yttrium; organic matter is polylactose.

[0014] The material ratio is: high-density polyethylene resin 95.3 wt %; activated calcium carbonate 4.4 wt %; ferric oxide powder 0.1 wt %; yttrium 0.1 wt %; polylactose 0.1 wt %.

[0015] After the above raw materials are mixed, the mixture is heated to make the mixture into a molten state, and then heated and extruded. Rapid cooling after heat treatment, and then cut into granular suspension filler, the specific gravity is 0.980 g / cm 3 , close to water, easy to fluidize. The suspended filler is a short round column with several axial through holes in the middle and toothed outer surface, which can effectively meet the att...

Embodiment 2

[0017] A suspension filler for anaerobic / anoxic, its main material is high-density polyethylene resin, specific gravity 0.956g / cm 3 . The specific gravity adjustment material is talcum powder with a specific gravity of 2.712g / cm 3 . The inorganic elements in the microbial nutrients are ferric oxide powder and yttrium, and the organic substances are polylactose.

[0018] The material ratio is: high-density polyethylene resin 97.0%; talc powder 2.7%; ferric oxide powder 0.1 wt%; yttrium 0.1 wt%; polylactose 0.1 wt%.

[0019] The specific gravity of the suspension filler made after mixing the above raw materials is 0.975 g / cm 3 , close to water.

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PUM

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Abstract

The invention relates to anaerobic / anoxic suspension filler. The filler is composed of high-density polyethylene, a specific gravity adjusting material and a microbial nutrient substance, wherein theweight ratio of the high-density polyethylene is 95.0-98.0%, the weight ratio of the specific gravity adjusting materials is 1.5-4.9%, and the weight ratio of the microbial nutrient substance is 0.1-0.5%. The suspension filler is reasonable in design and convenient to manufacture, and the specific gravity of the suspension filler can be closer to that of water, so that under the condition that aeration is not used and only is a flow pusher or a stirrer used, more complete fluidization can be achieved, and it is ensured that the filler takes full effect in an anaerobic / anoxic tank.

Description

technical field [0001] The invention relates to a sewage treatment material, in particular to a suspended filler used in anaerobic or anoxic ponds, specifically a suspended filler used in anaerobic / anoxic ponds. Background technique [0002] At present, suspended fillers have been widely used in the field of sewage treatment, especially in aerobic pools, which can effectively increase the microbial content in the pool and improve the efficiency of sewage treatment. With the improvement of urban sewage treatment standards, the volume of the original anaerobic / anoxic tank is too small to meet the required residence time for denitrification. Therefore, suspended fillers are added in the anaerobic / anoxic tank, which can increase the biomass of denitrifying bacteria and make up for the problem of insufficient residence time. However, because the sewage in the anaerobic / anoxic pool is different from the water in the aerobic pool, the suspended filler originally used in the aerobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34
CPCC02F3/2806C02F3/34C02F2305/06
Inventor 黄东辉赵勇史群毓蒋永丰黄翀蒋燕
Owner JIANGSU YULONG ENVIRONMENTAL PROTECTION
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