Double-sphere type suspension filler

Abstract

The invention discloses double-sphere type suspension filler which comprises a first sphere and a second sphere. The first sphere and the second sphere are each composed of criss-cross partition strips, and meshes are formed between the partition strips. The second sphere is sleeved with the first sphere, and the first sphere and the second sphere are connected through a connecting rod. The second sphere is filled with filling sponge. By establishing functional regions of different structures, microorganisms with different functions grow on the first sphere, the second sphere and the filling sponge, the species and number of microorganisms are enriched, the concentration of microorganisms in a pool is high, and capacity loads are improved; in addition, the filler has high biocompatibility, rapid growth of a biological film is promoted so that film hanging can be achieved, and the problem that other filler can hardly be hung to form films is solved. In the use process, the filler is in a suspension flowing state in the pool, sewage and air can make contact with the biological film on the surface of the filler, the mass transfer efficiency of the gas phase, the liquid phase and the solid phase is promoted, and the degradation speed of pollutant in water is increased.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a double-spherical suspension filler for sewage treatment. Background technique [0002] In recent years, the rapid development of cities has brought great challenges to my country's urban and rural water environments and seriously threatened people's health. In view of the urgency of water pollution control and prevention, sewage treatment usually adopts the combination of activated sludge method with filler as biofilm carrier and biofilm contact oxidation method. In the process of sewage or wastewater treatment, the biofilm reaction tank is filled with fillers, which are suspended and submerged in water to provide a place for microorganisms to grow and attach. The aerated and oxygenated wastewater flows through the fillers at a certain flow rate and is purified by the action of microorganisms. [0003] Filler is a key component in the biofilm treatment proc...

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Problems solved by technology

[0005] (1) The fixed packing has high requirements on the uniformity of water distribution and gas distribution, which is prone to difficulty in film removal and blockage, resulting in poor sewage treatment effect and may even cause damage to structures

[0006] (2) Suspended packing needs to be equipped with auxiliary bearing brackets, which causes inconvenience in installation, maintenance and replacement, and there are problems of relatively poor microbial adhesion on the packing and high cost

[0007] (3) Dispersed fillers mainly use raw materials such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) and polyurethane (PU), and are mainly single-layer structures, which generally have poor hydrophilicity. , poor biocompatibility and insufficient mechanical strength limit its application in wastewater treatment

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