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A built-in screen type aerobic granular sludge reactor and its sewage treatment method

A technology for aerobic granular sludge and sewage treatment methods, applied in water/sludge/sewage treatment, biological water/sewage treatment, chemical instruments and methods, etc., can solve the lack of effective control strategies for particle size, hydraulic shearing Increase the operating energy consumption and reduce the average particle size of the particles to achieve the effects of inhibiting excessive particle size growth, high COD and total nitrogen removal rates, and stable operation

Active Publication Date: 2017-06-27
ZHEJIANG URBAN & RURAL PLANNING DESIGN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, increasing the hydraulic shear in the reactor increases the operating energy consumption, and at the same time leads to a smaller average particle size and poorer removal of total nitrogen.
At present, effective control strategies for particle size are still lacking.

Method used

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  • A built-in screen type aerobic granular sludge reactor and its sewage treatment method
  • A built-in screen type aerobic granular sludge reactor and its sewage treatment method
  • A built-in screen type aerobic granular sludge reactor and its sewage treatment method

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0036] As shown in the figure, the built-in screen type aerobic granular sludge reactor includes a reactor body 1 for inoculating aerobic granular sludge. The reactor body 1 has a cylindrical structure, and the lower part of the reactor body 1 is provided with water inlet. Device 6, the middle of the reactor main body 1 is provided with a water outlet device 4, the water inlet device 6 is connected to an inlet pump 9 through a water inlet pipe, and the inlet pump 9 is connected to the sewage distribution pool 8; also includes a controller 10, which is controlled by the inlet pump 9 Connection, the ratio of the height of the reactor body 1 to the inner diameter is 5-8:1, the bottom of the cavity of the reactor body 1 is provided with an aeration device 5, the aeration device 5 is connected to the blower 11 through the inlet pipe, and the blower 11 is co...

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Abstract

The invention relates to a built-in screen type aerobic granular sludge reactor and a sewage treatment method thereof and belongs to the technical field of sewage treatment. The built-in screen type aerobic granular sludge reactor comprises a reactor body, wherein an aeration device is arranged at the bottom portion of the chamber of the reactor body, the aeration device is connected with an air blower through an air inlet pipe and the air blower is connected with a controller; an annular funnel-shaped filter screen is cooperatively arranged in the chamber at four-fifth to three-fourth height of the reactor, the meshes of the filter screen are 2 to 4mm, the diameter of the upper rim of the filter screen is four-fifth to one of the inner diameter of the reactor body, the diameter of the lower rim of the filter screen is one-fifth to two-fifth of the inner diameter of the reactor body, and an included angle between the inclined surface of the side of the annular funnel-shaped filter screen and the horizontal plane is 45 to 60 degrees. The built-in screen type aerobic granular sludge reactor and the sewage treatment method thereof have the advantages that the internal hydraulic condition of the reactor is regulated and controlled by arranging the annular funnel-shaped filter screen, the particle size distribution of aerobic granular sludge is optimized, and the stable operation of the reactor and the high-efficiency pollutant removing capacity are realized under the condition of low aeration strength.

Description

Technical field [0001] The invention belongs to the technical field of sewage treatment, and specifically relates to a built-in screen type aerobic granular sludge reactor and a sewage treatment method thereof. Background technique [0002] Compared with activated sludge, aerobic granular sludge has a dense structure, anoxic-aerobic colony distribution, high biomass and strong alienation characteristics, which make it have fast mud-water separation, simultaneous biological nitrogen and phosphorus removal, Obvious technical advantages such as high-efficiency degradation of pollutants and residual sludge reduction, and good development and application prospects have attracted wide attention from researchers. However, aerobic granular sludge is prone to instability in long-term operation, which is manifested by the blackening of the inside of the particles, the structure disintegration and fragmentation, the drastic reduction of sedimentation, the large loss of sludge and the collap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 周鑫根
Owner ZHEJIANG URBAN & RURAL PLANNING DESIGN INST
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