Continuous flow aerobic granular sludge reaction device provided with stirring paddle internal components and method

An aerobic granular sludge and reaction device technology, which is applied in the methods of granulating raw materials, sludge treatment, biological treatment devices, etc., can solve the problems of hydraulic shear force disorder and uncontrollable hydraulic scouring, and achieve effective treatment , Good working performance and low energy consumption

Inactive Publication Date: 2021-08-27
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hydraulic shear force provided by aeration is turbulent, and the hydraulic erosion of the particles in the reactor is uncontrollable

Method used

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  • Continuous flow aerobic granular sludge reaction device provided with stirring paddle internal components and method
  • Continuous flow aerobic granular sludge reaction device provided with stirring paddle internal components and method
  • Continuous flow aerobic granular sludge reaction device provided with stirring paddle internal components and method

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Experimental program
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Embodiment

[0040] In this embodiment, the structure of the continuous flow aerobic granular sludge reaction device adopted is as above, and will not be repeated here. The specific parameters involved are as follows: the aerobic bioreactor 4 adopts a cylindrical hollow plexiglass cylinder with an effective volume of 3L, an effective height of 50cm in the cylinder, an inner diameter of 10cm, and a height-to-diameter ratio of 5:1; the precipitation reactor 12 The effective volume is 1L, the upper part is cylindrical, the lower part is tapered conical shape, the effective height is 20cm, the inner diameter is 10cm, and the cone height is 5cm. The inoculated sludge was taken from the return sludge of a domestic sewage treatment plant, and the concentration of the inoculated sludge was 4000 mg / L; the organic wastewater was prepared urban domestic sewage.

[0041] The operation process of using the above-mentioned continuous flow aerobic granular sludge reactor to treat urban sewage and cultiva...

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Abstract

The invention discloses a continuous flow aerobic granular sludge reaction device provided with stirring paddle internal components and a method, and belongs to the field of water pollution control. The device comprises an aerobic bioreactor, a precipitation reactor and a sludge return pipe, a stirring device for fully stirring mud-water mixed liquid is arranged in an inner cavity of the aerobic bioreactor, and an aerating device for aerating and oxygenating is arranged at the bottom of the aerobic bioreactor; sewage treated by the aerobic bioreactor passes through a screen and then enters the precipitation reactor; a reflux inlet is formed in the bottom of the precipitation reactor, is communicated with the lower part of the aerobic bioreactor through the sludge return pipe, and is used for returning sludge in the precipitation reactor into the aerobic bioreactor; and an electromagnetic valve externally connected with a magnetic device is arranged at the reflux inlet. The stirring device provides a rotational flow water flow state for the aerobic bioreactor, provides directional hydraulic shearing force for sludge particles, promotes granulation of aerobic sludge, and shortens the starting time of the system.

Description

technical field [0001] The invention relates to a continuous-flow aerobic granular sludge reaction device and method provided with stirring paddle internal components, belonging to the technical field of water pollution control. Background technique [0002] In the field of wastewater biological treatment, aerobic biological treatment has fast response speed, strong treatment capacity, and low environmental pollution, and is one of the most widely used processes in wastewater treatment processes. Aerobic biological treatment is divided into biofilm method and activated sludge method. Among them, the process of continuous flow aerobic particles has a strong market application prospect due to its advantages of simple operation and maintenance, high processing efficiency, and small footprint. However, in the actual application process, continuous flow of aerobic granular sludge is prone to sludge bulking and unstable particle structure. This problem has also become one of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J2/00C02F11/00C02F3/12
CPCB01J2/00C02F11/00C02F3/12C02F2203/006Y02W10/10
Inventor 朱亮付焱勤姬雅彤楼恬汝徐向阳
Owner ZHEJIANG UNIV
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