Cylindrical self-circulation denitrification integrated sewage treatment equipment based on aerobic granular sludge

Abstract

The invention relates to a cylindrical self-circulation denitrification integrated sewage treatment equipment based on aerobic granular sludge, which comprises a cylinder, a water inlet pipe, a wateroutlet pipe, an aeration tank and an up-flow reaction tank, an aeration unit and a water distribution pipe are arranged in the aeration tank and the up-flow reaction tank respectively, the aeration tank is communicated with the up-flow reaction tank through a return pipe, an effluent weir and a water collecting tank are arranged at the upper part of the up-flow reaction tank; the effluent weir iscommunicated with the water collecting tank; the water collecting tank is communicated with the aeration tank through an aeration tank water inlet pipe; an upper baffle plate and a lower baffle plateare arranged on two sides of the aeration tank, a settling zone is formed between the baffle plates and the cylinder, and the water outlet pipe is communicated with the settling zone. According to thesewage treatment equipment disclosed by the invention, sludge accumulation is avoided by utilizing the characteristic that the inner cavity of the cylinder has no dead angle; the sewage circularly flows between the up-flow reaction tanks of the aeration tank through aeration, external power is not needed, and the energy consumption is reduced; due to the action of the upper baffle plate and the lower baffle plate, sewage is naturally settled in the settling zone, so that the concentration of suspended particles in effluent is extremely low, and the discharge requirement is met.

Description

technical field [0001] The present invention relates to a kind of sewage treatment equipment, more specifically, especially to a self-circulation of sewage formed by the pressure difference and liquid level difference between the upflow reaction tank and the aeration tank, in the aeration tank Dissolved oxygen provided by separate aeration circulates into the entire reaction tank, and a single sedimentation zone is set up in the aeration tank through a baffle to further treat the sewage in the reaction tank, and to meet higher water quality requirements based on aerobic granular sludge. Circular denitrification integrated sewage treatment equipment. Background technique [0002] The environment contains a large amount of high-concentration organic wastewater. High-concentration organic wastewater not only makes the water lose its use value, but also seriously affects the normal life of people near the water. At the same time, it accumulates and stores in the water and soil a...

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Problems solved by technology

[0003] At present, comprehensive research on the aerobic granular sludge process has been carried out at home and abroad, but there are still problems in the cultivation and use of aerobic granular sludge. Aerobic granular sludge is easy to disintegrate during repeated operations, and most equipment The existence of dead corners leads to sludge accumulation, and the sludge turns black and floats up after a long time, which increases the difficulty of cultivating aerobic granular sludge and treating sewage

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