Method for preparing novel hydrophilic and magnetic mesh organism

A hydrophilic and biological technology, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of hindering popularization and application, difficulty in applying magnetic fields, and large volume, and achieve sludge production Low efficiency, increased oxygen concentration, and improved treatment efficiency

Active Publication Date: 2011-09-14
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large size of the actual sewage biological treatment equipment, it is still difficult to apply a magnetic field, which hinders its popularization and application.

Method used

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  • Method for preparing novel hydrophilic and magnetic mesh organism

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Experimental program
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Effect test

Embodiment 1

[0024] (1) Polyvinyl alcohol, magnetic powder, activated carbon, sodium alginate, and water are weighed in a mass ratio of 7:15:2:2:100.

[0025] Prepare 2% calcium chloride saturated boric acid solution and 2% glutaraldehyde solution.

[0026] (2) Rinse the above weighed polyvinyl alcohol twice with tap water to make a 7% solution, place it in a water bath or a reaction kettle and heat it to about 95°C, and keep stirring until the polyvinyl alcohol is completely dissolved;

[0027] (3) Slowly pour in the weighed magnetic powder, activated carbon, and sodium alginate, and stir while pouring to prevent the powder from agglomerating, and keep stirring until the added ingredients are completely mixed in the hydrosol. Then cool to about 40 degrees to obtain a gel solution.

[0028] (4) The gel is squeezed into the saturated boric acid solution containing 2% calcium chloride with a metering pump, and cross-linked and solidified under stirring conditions to form polyvinyl alcohol g...

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Abstract

The invention discloses a method for preparing a novel hydrophilic and magnetic mesh organism. The method comprises the following steps: sufficiently stirring polyvinyl alcohol, magnetic powder, active carbon, sodium alginate and water in a certain ratio; mixing the substances uniformly to obtain polyvinyl alcohol sol; adding the sol into saturated boric acid solution which contains 1 to 4 percent of CaCl2 to be washed with water; pouring 1 to 5 percent hydrochloric acid solution for soaking until no bubble generates; immerging gel balls into 1 to 3 percent dilute glutaraldehyde solution; adjusting the pH value of the solution to be 1 to 2 by adding diluted hydrochloric acid; performing a cross linking reaction on glutaric dialdehyde and polyvinyl alcohol for 2 to 4 hours for further solidifying; washing the reactant to be neutral with water; and magnetizing to prepare a hydrophilic and magnetic carrier. The method improves treating load, can realize the in-situ reduction of sludge, accelerates degradation rate of organic pollutant, improves treating efficiency and reduces operating cost.

Description

technical field [0001] The invention relates to waste water treatment, in particular to the preparation of a carrier mainly used for biological treatment of organic waste water. Background technique [0002] With the rapid development of industry and the continuous improvement of my country's urbanization rate, more and more industrial wastewater and domestic sewage are produced. The most economical method of sewage treatment is biochemical treatment. The biochemical treatment of sewage generally adopts activated sludge method and biofilm method. As the requirements for energy saving and emission reduction become higher and higher, the disadvantages of conventional biochemical treatment technologies have emerged: the amount of sludge is large, and it is difficult to meet the standards. Therefore, it is imperative to develop technologies with energy saving, high treatment efficiency and low sludge volume. [0003] Biofiller (carrier) is one of the cores of biofilm water tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/20C02F1/28C02F3/00C02F3/10
CPCY02W10/10
Inventor 梅荣武韦彦斐周刚李欲如沈浙萍
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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