Modified suspended biological filler, preparation method thereof and sewage treatment method

A sewage treatment method and biological filler technology, applied in water/sludge/sewage treatment, aerobic and anaerobic process treatment, chemical instruments and methods, etc., can solve the problems of limited membrane filtration flux capacity and hydraulic shock load Poor ability, serious pollution and other problems, to achieve the effect of enhancing hydrophilicity and bio-affinity, improving surface properties, and high film-hanging capacity

Active Publication Date: 2021-12-03
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of membrane bioreactors are the main factors that limit its large-scale promotion, including high membrane cost, serious pollution, high energy consumption, limited membrane filtration flux capacity, and poor ability to withstand hydraulic shock loads.

Method used

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  • Modified suspended biological filler, preparation method thereof and sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1 Preparation of modified suspended biological filler

[0045] 99 parts by weight of high-density polyethylene, 0.4 parts by weight of CaCO 3 Mix powder (particle size not greater than 15 μm), 0.4 parts by weight of talc powder (particle size not greater than 15 μm), 0.1 part by weight of ethoxylated alkylamine antistatic agent, and 0.1 part by weight of magnetic powder, and stir evenly in a mixer , and then put the mixture into the hopper of the injection molding machine, and extrude it through the filler mould.

[0046] The physical parameters of the filler prepared in this example are as follows: the material is HDPE, the structure material is a cylinder with 19 holes, the specification is Ф25×12mm, and the effective specific surface area of ​​the filler is 620m 2 / m 3 , the density is 0.97~0.98g / cm 3 , bulk density is 140kg / m 3 .

Embodiment 2

[0047] Example 2 Preparation of modified suspended biological filler

[0048] 98.5 parts by weight of high-density polyethylene, 0.6 parts by weight of CaCO 3 Mix powder (particle size not greater than 10 μm), 0.6 parts by weight of talc powder (particle size not greater than 10 μm), 0.15 parts by weight of ethoxylated alkylamine antistatic agent, and 0.15 parts by weight of magnetic powder, and stir evenly in a mixer , and then put the mixture into the hopper of the injection molding machine, and extrude it through the filler mould.

[0049] The physical parameters of the filler prepared in this example are as follows: material HDPE, cylindrical 19-hole structure material, specification Ф25×12mm, effective specific surface area 620m 2 / m 3 , the density is 0.97~0.98g / cm 3 , bulk density is 140kg / m 3 .

Embodiment 3

[0050] Example 3 Preparation of modified suspended biological filler

[0051] 98 parts by weight of high-density polyethylene, 0.8 parts by weight of CaCO 3 Mix powder (particle size not greater than 10 μm), 0.8 parts by weight of talc powder (particle size not greater than 10 μm), 0.2 parts by weight of ethoxylated alkylamine antistatic agent, and 0.2 parts by weight of magnetic powder, and stir evenly in a mixer , and then put the mixture into the hopper of the injection molding machine, and extrude it through the filler mould.

[0052] The physical parameters of the filler prepared in this example are as follows: the material is HDPE, the structure material is a cylinder with 19 holes, the specification is Ф25×12mm, and the effective specific surface area of ​​the filler is 620m 2 / m 3 , the density is 0.97~0.98g / cm 3 , bulk density is 140kg / m 3 .

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Abstract

The invention discloses a modified suspended biological filler, which is prepared from 98-99 parts by weight of high density polyethylene, 0.1-0.8 part by weight of calcium carbonate, 0.1-0.8 part by weight of talcum powder, 0.05-0.2 part by weight of ethoxylated alkylamine antistatic agent and 0.05-0.2 part by weight of magnetic powder, and is prepared by the following steps: mixing and stirring the raw materials according to a designed ratio, and carrying out injection molding and extrusion molding. According to the modified suspended biological filler disclosed by the invention, the surface of the modified filler is positively charged, the roughness is increased, the hydrophilicity and the biocompatibility are enhanced, the filler is used in an A2O process, the MBBR biofilm culturing time is short, the biofilm culturing amount is high, and the TN removal rate is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of domestic sewage treatment, specifically relates to a modified suspended biological filler, in particular to a preparation method of a modified suspended biological filler, and further relates to a sewage treatment method. Background technique [0002] In recent years, more and more attention has been paid to urban domestic sewage treatment. With the increasing level of urbanization, most of the industrial wastewater and domestic sewage are discharged into the water body, resulting in the deterioration of the quality of the water environment that is closely related to human beings, and the surface water and groundwater are polluted to varying degrees. Among them, due to the enrichment of nitrogen in the water body Nutrients such as phosphorus and phosphorus lead to the continuous aggravation of eutrophication in water bodies, resulting in a sharp decline in water quality. At present, urban sewage has grad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/10C02F101/16C02F101/30
CPCC02F3/30C02F2101/16C02F2101/105C02F2101/30Y02W10/10
Inventor 黄守斌张鸿涛牛振华向莹杨智鹏李橙
Owner TSINGHUA UNIV
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