Preparation method of magnetic water treatment filler

A magnetic water and magnetic powder technology is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. It can solve problems such as long start-up time, slow film formation, and poor biocompatibility, and achieve Reduce investment cost, increase load, and have good biocompatibility

Inactive Publication Date: 2017-09-08
SCIMEE TECH & SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to overcome the above-mentioned deficiencies such as slow film formation, long start-up time, and poor biocompatibility of existing biofilm fillers, and to provide a preparation method for magnetic water treatment fil...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh 0.8 kg of ferroferric oxide magnetic powder, pulverize the magnetic powder and pass it through a 500-mesh sieve, take the silane coupling agent KH-5500.1 kg, dilute it with 1 times the amount of liquid paraffin, add it to the above-mentioned magnetic powder, stir and mix well for use; Take 0.3 kg of calcium carbonate, pulverize the calcium carbonate and pass it through a 300-mesh sieve for later use. Add 3 kg of polypropylene resin to a high-speed mixer. After heating to 170°C to melt, add the processed magnetic powder and calcium carbonate, stir and mix. The mixture is added to the bin of the twin-screw granulator, and the granulation process is completed by the twin-screw granulator to form 7mm granules. Add the pellets to the silo of the twin-screw extruder, set the feed temperature to 160-170°C, the discharge temperature to 170-190°C, and the injection pressure to 80-90MPa, extrude into a continuous extrusion profile. After cooling, It is cut into a filler with...

Embodiment 2

[0041] Weigh 0.4kg of ferroferric oxide magnetic powder, pulverize the magnetic powder and pass it through a 500-mesh sieve, take 0.05kg of sodium stearate, dilute it with 1 times the amount of liquid paraffin, add it to the magnetic powder, stir and mix evenly for later use, weigh the carbonic acid Calcium 0.1kg, pulverized calcium carbonate and passed through a 300-mesh sieve for later use. Add 3.6kg of polyethylene resin to a high-speed mixer. After heating to 130°C to melt, add the processed magnetic powder and calcium carbonate, stir and mix. The mixed material is added to the bin of the twin-screw granulator, and the granulation process is completed by the twin-screw granulator to form 5mm granules. Add the pellets to the silo of the twin-screw extruder, set the feeding temperature to 125-140°C, the discharging temperature to 140-160°C, and the injection pressure to be 60-80MPa, and extrude them into continuous extrusion profiles. After cooling, It is cut into fillers wit...

Embodiment 3

[0043] Weigh 0.3 kg of ferroferric oxide magnetic powder, pulverize the magnetic powder and pass it through a 500-mesh sieve, take 0.03 kg of titanate coupling agent, dilute with 1 times the amount of liquid paraffin, add to the above-mentioned magnetic powder, stir and mix evenly for use, weigh Take 0.2 kg of talc powder, pulverize the talc powder and pass it through a 300-mesh sieve for use. Add 0.7 kg of polyvinyl chloride resin to the high-speed mixer, heat to 185°C to melt, add the processed magnetic powder and talc powder, and stir Mix, add the mixture into the bin of the twin-screw granulator, and complete the granulation process through the twin-screw granulator to form 8mm particles. Add the pellets to the silo of the twin-screw extruder, set the feeding temperature to 190-210°C, the discharging temperature to 200-230°C, and the injection pressure to be 70-80MPa, and extrude them into continuous extrusion profiles. After cooling, It is cut into fillers with a length of...

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PUM

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Abstract

The invention discloses a preparation method of a magnetic water treatment filler, comprising the following steps: S1, melting a thermoplastic resin and mixing it with magnetic powder to obtain a premix; S2, granulating the above premix; S3, making the premix The granules are formed and cut into fillers; S4, the above fillers are pickled and dried to obtain finished products. By modifying the material, the present invention has adjustable density, easy processing, and the physical and chemical properties of the finished product are superior to traditional unmodified fillers, which is beneficial to biological attachment and reproduction; the rougher surface and larger specific surface area can better accommodate More microorganisms, the introduction of magnetism can make microorganisms reproduce better under the action of the magnetic effect.

Description

Technical field [0001] The invention relates to the field of wastewater treatment, in particular to a preparation method of a magnetic water treatment filler. Background technique [0002] In recent years, many major advances and developments in the field of water treatment have focused on the biofilm process. Biofilm process is a general term for a large category of biological treatment methods, including biological filters, biological turntables, biological contact oxidation tanks, and biological aerated filters. The common feature of the pool and the biological fluidized bed is that microorganisms grow on the surface of the filler to form a biofilm. It is a widely used biological treatment method and has good treatment effects and application prospects. In the wastewater biofilm treatment process, the filler filled in the reactor is its core part. Filler is the place where the biofilm depends, and it is the carrier of the biofilm, which affects the growth, reproduction, shed...

Claims

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Application Information

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IPC IPC(8): B29C69/00C02F3/00
CPCB29C69/001C02F3/00C02F2003/001
Inventor 王利军孙竟肖波吕志国
Owner SCIMEE TECH & SCI CO LTD
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