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Aerator

An aerator and air technology, applied in the field of aerators, can solve the problems of easy breakage, large pressure loss and high wear of the aerator

Inactive Publication Date: 2005-06-08
PFLEIDERER WATER SYST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These aerators are made of eg ceramic material, however it has the disadvantage that it is relatively brittle and therefore easily broken
However, the disadvantages are that such aerators have a large pressure loss, as well as high wear due to their manufacturing process, and can only withstand small volume flows

Method used

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[0026] Manufacture of Tubular Aerators

[0027] A ring-shaped aluminum mold, which can be heated with a heating jacket, is used as the sintering furnace, in the middle of which is a mandrel also made of aluminum. The gap between the mandrel and the aluminum mold was filled with 610 g of HDPE particles (p = 0.925-0.956 g / cm3, 80% of the particles were larger than 500 microns) introduced by shaking. The gap between the core bone and the aluminum mold is 5 mm, so the aerator manufactured in this way has a corresponding wall width or thickness. The mixture was sintered by heating the aluminum mold to 150°C for 70 minutes using a heating mantle. The temperature gradient between the side facing the aluminum mold and the side facing the mandrel is about 7°C. Then cool to room temperature and remove from the mold.

[0028] The aerator manufactured in this way included holes on the air outflow side (A) with a pore size between 150 and 350 microns and an average value of 290 microns,...

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Abstract

The invention relates to an aerator consisting of a porous plastic molded body whose pores on the air outflow side (A) are smaller than the pores on the opposite air inflow side (B). The aerator according to the invention is particularly suitable for use in sewage treatment plants.

Description

technical field [0001] The present invention relates to an aerator comprising a plastic molded body and a method for its manufacture. The aerator according to the invention is particularly suitable for use in sewage treatment plants. technical background [0002] In most biochemical processes used in wastewater treatment today, the ability of microorganisms to consume oxygen to oxidize organic pollutants is primarily used. In order for microorganisms to obtain sufficient oxygen, air must be introduced into the sewage. Moreover, the air supply should also convert ammonium ions into nitrates to reduce the ammonium content in sewage. [0003] Aeration of sewage is usually carried out by blowing air through the use of porous aerators. These aerators are made of, for example, ceramic material, which however has the disadvantage that it is relatively brittle and therefore easily broken. Ceramic materials also have a rough surface on which deposits and scale tend to form, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/16B01F23/00C02F3/20
CPCB01D39/1676C02F3/20Y10S261/70Y02W10/10B01F23/231261B01F23/23123B01F23/23125C02F1/74
Inventor 安东尼奥·詹格拉索
Owner PFLEIDERER WATER SYST GMBH