Aerating apparatus

A technology of aeration device and air layer, applied in sustainable biological treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve the problems of unfavorable treatment of sewage, single function, etc., and prolong the backwash cycle. , the preparation process is simple and the cost is low

Active Publication Date: 2012-07-04
RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the function of the aeration device in the prior art is single, which is not conducive to realizing long-term and stable sewage treatment.

Method used

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  • Aerating apparatus
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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0076] This example is used to illustrate the preparation of the coated silica sand provided by the present invention.

[0077] 100 grams of quartz sand particles with a particle size of 70 mesh (224 microns) and a sphericity of 0.8 and quartz sand particles with a particle size of 140 mesh (105 microns) and a sphericity of 0.8 were heated to 50°C, and then, Add 6 grams of liquid polyvinyl alcohol tert-butyraldehyde modified epoxy resin, stir well, then add 1 gram of polyamide curing agent, and stir evenly, so that the epoxy resin is coated on the surface of the quartz sand particles; however, cool to room temperature, break 1. Obtain hydrophobic particles after sieving, and calculate by weight gain method, take the silica sand with polymer coating as a benchmark, and the content of polymer coating is 7% by weight.

preparation Embodiment 2

[0079] This example is used to illustrate the preparation of the coated silica sand provided by the present invention.

[0080] According to the method for embodiment 1, and utilize the raw material as shown in table 1, be 40 orders (450 microns) respectively with 100 grams of particle diameters, the quartz sand particle that sphericity is 0.65 and particle diameter be 70 orders (224 microns) 1. Quartz sand particles with a sphericity of 0.65 are prepared as hydrophobic particles with a polymer coating.

preparation Embodiment 3-8

[0082] This example is used to illustrate the preparation of the coated silica sand provided by the present invention.

[0083] According to the method of embodiment 1, and utilize the raw material as shown in table 1, make hydrophobic particles respectively, wherein, the diameter of the quartz sand particle used in the preparation embodiment 3 is 280 microns, and the diameter of the quartz sand particle in the preparation embodiment 4 is 154 microns, the diameter of the quartz sand particles in Preparation Examples 5 and 6 is 315 microns, the diameter of the quartz sand particles in Preparation Example 7 is 355 microns, and the diameter of the quartz sand particles in Preparation Example 8 is 200 microns.

[0084] Table 1

[0085]

[0086] By weight gain method, calculate the silica sand that the surface that preparation embodiment 2-8 obtains is coated with coating layer, take the silica sand with polymer coating layer as benchmark, the content of polymer coating layer is...

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Abstract

The invention discloses an aerating apparatus which comprises a molding body consisting of a porous material containing silicon sand, wherein the molding body internally comprises a cavity, and the porous material has a micropore diameter of 100-480 micrometers and a porosity of 5-10 percent. The aerating apparatus provided by the invention has functions of aerating and washing, and overcomes theproblems of easy surface blockage and short backwashing period of the aerating apparatus of the prior art. In addition, the aerating apparatus provided by the invention has a simple manufacture process and low cost, and can realize continuous operation of sewage treatment.

Description

technical field [0001] The invention relates to an aeration device. Background technique [0002] In order to ensure the activity of the activated sludge in the sewage treatment tank, it is necessary to use an aeration device to supply oxygen or air to the aeration tank during the sewage treatment process. Aeration not only makes the liquid in the pool contact with air or oxygen to oxygenate, but also accelerates the transfer of oxygen in the air to the liquid due to the agitation of the liquid, so as to complete the purpose of oxygenation. In addition, aeration also has the purpose of preventing the suspension of the tank from sinking and strengthening the contact between the organic matter in the pool and the microorganisms and dissolved oxygen, so as to ensure that the microorganisms in the pool can oxidize and decompose the organic matter in the sewage under the condition of sufficient dissolved oxygen. However, the function of the aeration device in the prior art is si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/30
CPCY02W10/10
Inventor 秦升益
Owner RENCHSAND ECO ENVIRONMENT PROTECTION SCI & TECH CO LTD
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