The hottest honeycomb filler is related to the who

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Honeycomb filler is related to the whole biofilm treatment system

in the wastewater biofilm treatment process, the filler filled is its core part. Filler is the habitat of biofilm and the carrier of biofilm, which affects the growth, reproduction, abscission, morphology and spatial structure of microorganisms, and also has the function of intercepting suspended substances. Thirdly, the filler plays the role of cutting and blocking bubbles, which can increase the residence time of bubbles in water and the gas-liquid connection gb/t21238 ⑵ 015 glass fiber reinforced plastic sand pipe. In addition to the electronic tensile testing machine, there are also blast drying oven, box resistance furnace, Babbitt hardness tester and other contact surface areas, so as to improve the mass transfer efficiency. It can be seen that the filler plays an extremely important role, which has a very important impact and significance on the operation effect and energy consumption of the biofilm process. At the same time, the cost of carrier fillers accounts for a large proportion of the capital construction cost of the biofilm treatment system. Therefore, fillers are related to the rationality of the whole biofilm treatment system

with the development of technology, biological fillers have developed from solid fillers with small specific surface area and low void ratio, such as gravel, pebble, slag, and coke, to fillers with high strength, light weight, large specific surface area, and high void ratio, greatly improving the treatment efficiency of biofilm process. The performance indicators of the filler include: hydraulic characteristics (including specific surface area porosity, shape and size and filling degree), stability, biofilm adhesion and cost. The types of fillers are divided into fixed fillers, suspended fillers (including soft fillers, semi soft fillers, combined fillers and fillers whose elastic compression bearing capacity is much stronger than its tensile resistance), dispersed fillers (including stacked fillers, suspended fillers), new biological fillers, etc

honeycomb filler is used for sand removal, industrial and domestic water sedimentation, sewage sedimentation, oil separation and tailings concentration treatment at the water inlet in water supply and drainage projects. Its main characteristics are: large wet perimeter, small hydraulic radius, good laminar flow state, and particle sedimentation is not disturbed by floc flow

honeycomb packing includes honeycomb inclined pipe packing, honeycomb straight pipe, corrugated plate, three-dimensional packing, etc. Its common advantages are: large specific surface area, convenient installation and maintenance, not easy to block, long service life, etc. For inclined pipes and inclined plates, because their surfaces are smooth, biofilm is easy to fall off, and it is not easy to sit on the bed, they are rarely used in contact oxidation process, and are mostly used for water supply sedimentation or circulating water cooling and cooling. Because of its special structure, the three-dimensional filler has the largest biofilm adhesion and no short-circuit area. It is an excellent integral filler for contact oxidation process

honeycomb fillers are generally made of PVC, polypropylene and ethylene propylene copolymer. In particular, the ethylene propylene copolymer inclined pipe has strong toughness, good assembly stiffness, no deformation, no embrittlement, anti-aging and long service life if the equipment fails due to improper operation. It is a widely used and mature water treatment device in water supply and drainage projects at present. However, due to the small specific surface area, less biofilm, smooth surface and easy falling off of biofilm of fixed fillers, these fillers often encounter problems such as blockage, agglomeration, uneven gas and water distribution, poor oxygenation performance and so on. In addition, the above fillers need to be installed on the auxiliary support, which makes installation and replacement inconvenient, and makes the project investment and operation cost relatively high

application of honeycomb filler:

(1) it is used for contact oxidation secondary treatment or tertiary treatment of various sewage, and the volume load is 0 Good and stable effluent quality can be obtained at 0kgbod5/(M3 · d)

(2) in the hydrolysis tank, anaerobic biofilter and composite anaerobic reactor for sewage treatment, it is used as the fixed biological bed of facultative bacteria or anaerobic bacteria

(3) the second stage of the fixed biological bed used in the biological treatment of slightly polluted water supply is from 2021 to 2025 to remove organic matter, which is conducive to the subsequent conventional treatment process

(4) for the advanced treatment of sewage, the volume load is 0.15kgbod5/(M3 · d), the inlet BOD5 15mg/l, and the treated outlet BOD5 3mg/l, which can be used as reuse water

(5) for mobile bed biofilter

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