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Preparation method of composite biological filler for sewage biochemical treatment

A biological filler and biochemical treatment technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of poor engineering application efficiency, poor mechanical strength, and high preparation cost. Achieve the effect of large surface area, high strength and light texture

Active Publication Date: 2020-06-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation cost of the filler is relatively high, and its mechanical strength is poor, and it is easily lost due to immersion, so the engineering application performance is not good.

Method used

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  • Preparation method of composite biological filler for sewage biochemical treatment
  • Preparation method of composite biological filler for sewage biochemical treatment
  • Preparation method of composite biological filler for sewage biochemical treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) Ozone pre-oxidation and chemical oxidation intercalation treatment of flake graphite:

[0028] ① Ozone pre-oxidation treatment of flake graphite:

[0029]First, 150g of deionized water is added to a beaker with a volume of 500mL, and the beaker filled with deionized water is placed on a magnetic stirrer, and then 100g of flake graphite with an average particle size of 80 mesh is added to the beaker and the magnetic stirring is started. The stirring control switch of the generator; then insert the ozone generator gas production tube into the bottom of the beaker, turn on the ozone generator power switch, the gas source used by the ozone generator is pure oxygen, and the amount of ozone that is passed into the solution from the gas production tube is 5 mg / L. Ozone oxidize the graphite flakes at room temperature for 20 minutes; after the ozone oxidation, first filter the solution to collect the graphite flake powder, wash the graphite flakes with deionized water for 3 t...

Embodiment 2

[0046] 1) Ozone pre-oxidation and chemical oxidation intercalation treatment of flake graphite:

[0047] ① Ozone pre-oxidation treatment of flake graphite:

[0048] First, 150g of deionized water is added to a beaker with a volume of 500mL, and the beaker filled with deionized water is placed on a magnetic stirrer, and then 100g of flake graphite with an average particle size of 80 mesh is added to the beaker and the magnetic stirring is started. The stirring control switch of the generator; then insert the ozone generator gas production tube into the bottom of the beaker, turn on the ozone generator power switch, the gas source used by the ozone generator is pure oxygen, and the amount of ozone that is passed into the solution from the gas production tube is 5 mg / L. Ozone oxidize the graphite flakes at room temperature for 23 minutes; after the ozone oxidation, first filter the solution to collect the graphite flakes powder, wash the graphite flakes with deionized water for 3...

Embodiment 3

[0061] 1) Ozone pre-oxidation and chemical oxidation intercalation treatment of flake graphite:

[0062] ① Ozone pre-oxidation treatment of flake graphite:

[0063] First, 150g of deionized water is added to a beaker with a volume of 500mL, and the beaker filled with deionized water is placed on a magnetic stirrer, and then 100g of flake graphite with an average particle size of 80 mesh is added to the beaker and the magnetic stirring is started. The stirring control switch of the generator; then insert the ozone generator gas production tube into the bottom of the beaker, turn on the ozone generator power switch, the gas source used by the ozone generator is pure oxygen, and the amount of ozone that is passed into the solution from the gas production tube is 5 mg / L. Ozone oxidize the graphite flakes at room temperature for 26 minutes; after the ozone oxidation, first filter the solution to collect the graphite flake powder, wash the graphite flakes with deionized water for 3 ...

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Abstract

The invention relates to a preparation method of compound biological filler for biochemical wastewater treatment. The preparation method mainly comprises the following steps: carrying out immersion treatment on commercial diatomite; then preparing slurry from the diatomite subjected to the immersion treatment, flake graphite subjected to ozone pre-oxidization and chemical oxidation intercalation treatment, phosphoric acid and aluminum hydroxide; carrying out granulation and roasting treatment on the slurry to prepare expanded graphite-diatomite-aluminum phosphate compound biological filler. The preparation method provided by the invention is simple to operate, low in cost and safe and environmentally friendly; the prepared compound biological filler has the advantages of light weight, goodchemical stability, high strength, washing resistance, uneasiness of being blocked, large surface area and the like and is suitable for attachment and reproduction growth of microorganisms, so that the efficient and stable operation of biochemical treatment of wastewater in a biological filter can be ensured.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a preparation method of a composite filler for sewage treatment. Background technique [0002] Domestic sewage and urban sewage have the advantages of large production volume and good biochemical treatment characteristics, but if they are discharged into rivers, lakes, reservoirs and marine water environments without proper treatment, the self-purification ability of natural water bodies will be reduced and water quality will deteriorate , which in turn endangers the health of aquatic biological systems and can endanger human health. Therefore, proper treatment of domestic sewage and urban sewage before discharge or reuse is the core content of water resource protection and utilization. At present, the innovation and application of biofilm sewage treatment technology have attracted much attention. For biofilm sewage treatment technology, compared with contac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/10C02F101/30
CPCY02W10/10
Inventor 宋来洲贺君杨育林李飞
Owner YANSHAN UNIV