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Preparation method of degradable cellulose base filler used for water treatment

A cellulose-based, water treatment technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as secondary pollution, achieve growth protection, good effect, and pores high rate effect

Active Publication Date: 2014-03-05
ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of secondary pollution caused by existing water treatment fillers, and to provide a cellulose-based degradable filler for water treatment that has a simple preparation process, is environmentally friendly, and can produce degradable filler products with good performance. preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Crush the straw to 800 mesh, add 3ml of N-methylmorphine-N-oxide (NMMO·H2O) with a water content of 35% to each gram of straw powder, and mix well;

[0025] 2. Add 0.5g of N-methylolacrylamide per gram of rice straw powder to the straw cellulose material in which N-methylmorphine-N-oxide is uniformly dissolved, stir evenly and let it stand for 50 minutes, then mix the above mixture Place in a water bath heater at 60°C for 120 minutes;

[0026] 3. Control the temperature at 35°C, add 2% starch based on the mass of straw cellulose, 10% facultative bacteria based on the mass of straw cellulose, and the mass of facultative bacteria to the crosslinked straw cellulose material Fraction of 5% glucose, foam molding, the formed straw cellulose filler is dried at 55°C.

[0027] 4. Submerge the dried straw cellulose filler in 15ml of a mixed solution of 40% polyethyleneimine and 10% (mass fraction) NaOH per gram of dry carrier, and stir for 1 hour at 50°C. Take it out, wash i...

Embodiment 2

[0030] 1. Crush the straw to 800 mesh, add 3ml of N-methylmorphine-N-oxide (NMMO·H2O) with a water content of 35% to each gram of straw powder, and mix well;

[0031] 2. Add 1.5g of N-methylolacrylamide per gram of straw cellulose to the rice straw powder in which N-methylmorphine-N-oxide is uniformly dissolved, stir evenly and let it stand for 50 minutes, then place the above mixture Heat in a water bath heater at 50°C for 120min;

[0032] 3. Control the temperature at 35°C. Add 3% starch based on the mass of straw cellulose as a binder and 12% of anaerobic bacteria based on the mass of straw cellulose to the crosslinked straw cellulose material, accounting for Phosphorus salt with anaerobic bacteria mass of 8% is foamed and molded, and the formed straw filler is dried at 55°C.

[0033] 4. Submerge the dried straw cellulose filler in 15ml of 10% (mass fraction) NaOH solution with a concentration of 45% polyethyleneimine per gram of dry carrier, and stir at 50°C for 1 hour. ...

Embodiment 3

[0036] 1. Crush the wheat straw to 800 mesh, add 3ml of N-methylmorphine-N-oxide (NMMO·H2O) with a water content of 35% to each gram of wheat straw powder, and mix well;

[0037] 2. In the wheat straw in which N-methylmorphine-N-oxide is uniformly dissolved, add 2g of N-methylolacrylamide per gram of wheat straw powder, stir well and let it stand for 50min, then put the above mixture in Heating in a water bath heater at 50°C for 120min;

[0038] 3. Control the temperature at 38°C, add 4% starch based on the mass of wheat straw cellulose and 15% anaerobic bacteria based on the mass of wheat straw cellulose to the crosslinked wheat straw powder, accounting for anaerobic Ammonium salt with 10% bacterial mass was used for foam molding, and the formed wheat straw cellulose filler was dried at 55°C.

[0039] 4. Immerse the dry wheat straw cellulose filler in 15ml of 10% (mass fraction) NaOH solution with a concentration of 50% polyethyleneimine per gram of dry carrier, and stir at ...

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Abstract

The invention relates to water treatment filler in environmental protection field, in particular to a preparation method of degradable cellulose base filler used for water treatment. The preparation method is mainly as follows: fibers are prepared by technology of N-methyl morpholine-N-oxide, the mechanical property of the filler is improved further by the cross-linking and modifying technology, simultaneously, the surface of the filler is processed to load positive charge on the surface of the filler, so that the microorganism can adhere and grow on the surface of the filler conveniently. According to the invention, the method is simple and environment-friendly, the fibers prepared by the technology of N-methyl morpholine-N-oxide is good in mechanical property, and the prepared filler is large in superficial area, high in porosity, beneficial to protecting the growth of microorganisms, good in effect during the water treatment, and high in application value, and can not cause secondary pollution.

Description

technical field [0001] The invention relates to a water treatment filler in the field of environmental protection, in particular to a preparation method of a cellulose-based degradable filler for water treatment. Background technique [0002] Making wastewater contact with the biofilm grown on the surface of the fixed support, using biodegradation or transforming the organic pollutants in the wastewater is a commonly used wastewater treatment method, that is, the biofilm method. As a medium for the growth and reproduction of microorganisms, biological filler is the core part of biofilm water treatment technology. Currently used fillers such as granular activated carbon, zeolite, quartz sand, plastic, silica gel, ceramic balls, etc., often contain a large amount of toxic and harmful substances, or are difficult to decompose and form solid waste, which is easy to cause secondary pollution. , difficult to deal with. [0003] Using biodegradable materials as biofilm carriers t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34
Inventor 郑展望张琴
Owner ZHEJIANG SHUANGLIANG SUNDA ENVIRONMENTAL PROTECTION CO LTD
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