A rotary moving bed biological filter device

Abstract

The invention relates to a rotary moving bed biological filtration device. The rotary moving bed biological filtration device is characterized by comprising a moving bed box body, wherein a roller is horizontally arranged inside the moving bed box body, the roller is supported by a baffle and can rotate around the central rotating shaft of the roller; the outer wall of the roller is made of a porous plate, a biological filter material is arranged in the roller, and outer diameter of the biological filter material is larger than pore diameter of the porous plate; multiple plug flow plates are uniformly arranged on the outer wall of the roller along radial direction; the left side and the right side of the upper part of the moving bed box body are respectively horizontally provided with a water inlet pipe and a water outlet pipe, and the water inlet pipe corresponds to plug flow plates on the top of the roller in positions; at least one air inlet pipe is horizontally arranged at a position, corresponding to the longitudinal direction of the water inlet pipe, at the lower part of the moving bed box body, and a row of aeration holes with openings upwards are formed in the upper part of the air inlet pipe; aeration thrust of the air inlet pipe and water inlet thrust of the water inlet pipe act on the plug flow plates at the same time to drive the roller to rotate; and a sewage draining outlet is formed in the bottom of the moving bed box body. The rotary moving bed biological filtration device is simple to make, low in investment, low in energy consumption and high in ammonia nitrogen treatment capacity.

Description

technical field [0001] The invention relates to a moving bed biological filtration device, in particular to a rotary moving bed biological filtration device, which belongs to the technical field of moving bed biological filtration. Background technique [0002] The moving bed biofilm reactor is a sewage treatment process jointly developed by Norway's Kaldnes Miljoteknologi Company (KMT), the Norwegian University of Science and Technology (NTNU) and the Norwegian Research Institute at the end of the 1980s. It has the characteristics of high processing capacity, low energy consumption, no need for backwashing, small head loss, good gas-water-solid three-phase mass transfer, and no clogging. It is widely used for phosphorus removal in industrial wastewater, aquaculture wastewater, and domestic sewage. Plant nitrogen and phosphorus removal treatment. Its working principle is: the filler with a larger specific surface area in the reactor moves freely in the water due to stirring...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing moving bed biological filtration equipment has complex structure, large floor space, high maintenance cost and high energy consumption; the movement of the filter material is mainly realized by aeration, but there is a problem that the residual bait cannot be removed , the problem of fecal solid particle organic matter and exfoliated biofilm, and the problem of reduced nitrification capacity caused by excessive accumulation of dirt

Images