Aerobic carrier for domestic sewage treatment, and preparation method and application thereof

A domestic sewage and oxygen carrier technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of poor biological affinity, low removal rate of ammonia nitrogen, easy biofilm shedding, etc. problem, to achieve enhanced material exchange, large specific surface area, and good bioaffinity

Pending Publication Date: 2020-08-28
江苏中车华腾环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used carriers are multifaceted hollow sphere carriers, hollow cylindrical carriers, and suspension sphere carriers, etc., and non-polar polymer materials such as polyethylene or polypropylene are mostly used as materials. However, the inventors found that polymer materials generally have hydrophobicity , and the biological affinity is poor, and this kind of carrier generally has the disadvantages of slow film formation, easy biofilm falling off, low ammonia nitrogen removal rate, etc.

Method used

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  • Aerobic carrier for domestic sewage treatment, and preparation method and application thereof

Examples

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no. 1 example

[0036] refer to figure 1, an aerobic carrier for domestic sewage treatment, comprising a first cylinder body 1, a second cylinder body 2, and a third cylinder body 3 with successively increasing diameters and successively decreasing heights, and also includes first connecting ribs 4, second A connecting rib 5 and a third connecting rib 6; both ends of the cylinder are open, and the connecting ribs are plate-shaped.

[0037] For the first cylindrical body 1, its outer diameter is 20mm, and its height is 54mm. Four first connecting ribs 4 are fixed on the inner wall of the first cylindrical body to form the connecting ribs of the "ten" shape structure and the "ten" shape The intersecting center of the connecting ribs of the structure coincides with the axis of the first cylindrical body.

[0038] As for the second cylinder 2, its outer diameter is 40 mm and its height is 40 mm. The outer wall of the first cylinder and the inner wall of the second cylinder are fixedly connected ...

no. 2 example

[0042] An aerobic carrier for domestic sewage treatment is different from the first embodiment in that the outer diameter of the third cylinder is 50 mm, the outer diameter of the second cylinder is 30 mm, and the outer diameter of the third cylinder is 15 mm. The height of the first cylinder is 50mm, the height of the second cylinder is 35mm, and the height of the third cylinder is 8mm. There are 8 connecting ribs between the first cylinder and the second cylinder, and 4 connecting ribs in the first cylinder. There are 16 connecting ribs between the second cylinder body and the third cylinder body.

no. 3 example

[0044] A preparation of an aerobic carrier for domestic sewage treatment, comprising the steps of: taking 1.5kg of silicon dioxide micropowder whose particle size is above 200 mesh, 0.8kg of carbon black, 3kg of talcum powder, 15kg of maleic anhydride grafted polypropylene, polypropylene 80kg of propylene, put them in an oven at 105°C, take them out after drying for 6 hours, then put all the above materials in a high-speed mixer and mix them evenly, then put them in a twin-screw extruder, extrude and granulate at 175°C , after the pellets are cooled, they are placed in an injection molding machine for molding, and after cooling, they are demolded to obtain figure 1 The shown aerobic carrier for domestic sewage treatment has a carrier contact angle of 89.4° and a density of about 0.94g / cm 3 .

[0045] Take a container with a volume of 200L, fill it with the aerobic carrier prepared by using modified materials in this example according to the filling rate of 40%, weigh the tota...

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Abstract

The invention relates to the technical field of sewage treatment, and especially relates to an aerobic carrier for domestic sewage treatment, and a preparation method and an application thereof. The aerobic carrier is of a spherical framework structure formed by a first cylinder, a second cylinder, a third cylinder and plate-shaped connecting ribs, wherein the outer diameters of the first cylinder, the second cylinder and the third cylinder are sequentially increased. The aerobic biological carrier not only has good mechanical strength and wear resistance, but also has excellent specific surface area and fluidization performance, the energy consumption can be reduced, the surface contact angle is small after the components of the carrier are further modified, microorganism attachment is facilitated, the biofilm culturing time is greatly shortened, the pollutant removal efficiency of the carrier is high, and the performance is excellent.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an aerobic carrier for domestic sewage treatment and a preparation method and application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The moving bed membrane bioreactor (MBBR) process is an efficient water treatment process, which has the characteristics of high volume load and compact structure, and has been widely used in the field of sewage treatment. In the MBBR process, the biological carrier used for the growth of microorganisms is one of the key technologies of the reactor, and its performance determines the efficiency of the water treatment proces...

Claims

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Application Information

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IPC IPC(8): C02F3/10
CPCC02F3/109C02F3/105Y02W10/10
Inventor 唐晶徐道新任亮穆丹丹马建飞崔思远孙洪芹桑洪玉
Owner 江苏中车华腾环保科技有限公司
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