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High-density suspended filler and preparation method thereof

A suspended filler and high-density technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as reducing service life, achieve high service life and good sewage treatment capacity , the effect of low comprehensive economic cost

Active Publication Date: 2016-05-11
桑德生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the cost of degradable polymer plastics is higher than that of ordinary vinyl plastics, and adding too many degradable substances will greatly reduce the service life. Compared with petroleum-based synthetic plastics, it has a practical life of several decades.

Method used

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  • High-density suspended filler and preparation method thereof
  • High-density suspended filler and preparation method thereof
  • High-density suspended filler and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Immerse the vinyl hollow fiber purchased in the market into a water-based non-isocyanate polyurethane material solution, and complete the surface modification through processes such as soaking, throwing and drying. The high-density polyethylene particle raw material is uniformly mixed with nano-calcium carbonate filler, antioxidant 1010, antioxidant 168, etc., and then enters the screw extruder for mixing and extrusion. The screw extrusion temperature is 155-190°C (respectively 160, 175, 177, 180°C), and then the mold is shaped, cooled and cut to the required length to obtain granular honeycomb fillers. The granular honeycomb fillers made of high-density polyethylene are soaked in water-based non-isocyanate polyurethane adhesives. Finally, the surface of the electrostatic flocking equipment is planted with modified hollow fibers, and after later drying and removal of excess fluff, the final filler is obtained.

[0042] The prepared biological filler was used in a munici...

Embodiment 2

[0045] Immerse the vinyl hollow fiber purchased in the market into a water-based non-isocyanate polyurethane material solution, and complete the surface modification through processes such as soaking, throwing and drying.

[0046] The high-density polyethylene particle raw material is uniformly mixed with nano-calcium carbonate filler, antioxidant 1010, antioxidant 168, etc., and then enters the screw extruder for mixed extrusion. After the mold is shaped, it enters the surface of the electrostatic flocking equipment to plant the modified hollow fiber, and after cooling in the later stage, the excess fluff is removed to obtain the final filler.

[0047] The prepared bio-filler was used in a municipal sewage treatment plant in Beijing to improve the standard, and the start-up time of 15-20 ℃ film hanging in autumn was shortened to about 11 days, which met the requirements of nitrogen and phosphorus removal. The load capacity is greatly improved.

[0048]

[0049] The surfac...

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Abstract

The invention discloses high-density suspended filler and a preparation method thereof, and belongs to the field of filler for water treatment. The filler is formed by adhering a surface consisting of hollow fibers of vinyl resin to the surface of honeycomb particle filler of the vinyl resin, and is provided with a layer of tidily arranged hollow fibers. The method comprises the following steps: uniformly mixing a vinyl resin particle raw material, nanometer inorganic filter and an antioxidant; feeding into a screw extruder to perform mixed extrusion; then shaping with a mold; adhering the hollow fibers to the surface of honeycomb particle filler of the vinyl resin through flocking of electrostatic flocking equipment to form the filler with a layer of tidily arranged hollow fibers on the surface, namely the high-density suspended filler. The filler can take long service life and good sewage treatment capacity of the biological filler into consideration, is low in comprehensive economic cost, has extremely high specific surface area and is easy in sludge discharge.

Description

technical field [0001] The invention relates to the field of fillers for water treatment, in particular to a high-density suspension filler and a preparation method thereof. Background technique [0002] Biofilm method is an efficient and economical sewage treatment technology, which has been widely used at home and abroad. Biofiller is the core of biofilm water treatment technology. Biofiller is the place where microorganisms inhabit and survive. Its physical form and structure directly affect the growth and renewal process of microorganisms. Most literature studies have shown that increasing the specific surface area of ​​biofillers and increasing the affinity of the surface for microorganisms can improve the adsorption of biofilms. Efficiency and ability to degrade pollutants. [0003] Existing biological fillers can be classified from raw materials into two types: natural materials and chemically synthesized materials. The earliest people used natural raw materials suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00
CPCC02F3/00
Inventor 任彦强王凯刘金泉赵雪莲
Owner 桑德生态科技有限公司
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