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Device for culturing aerobic granular sludge and dedicated reactor thereof

A reactor and aeration device technology, applied in water/sludge/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc. Utilization and other issues, to achieve broad promotion value and application prospects, reduce the height of the reaction device, and facilitate cleaning and maintenance.

Inactive Publication Date: 2012-05-02
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the existing aerobic granular sludge engineering attempts at home and abroad use the construction of multiple independent SBR reactors with large aspect ratios to meet the technical requirements of treatment scale and granulation, which increases the equipment construction, operation monitoring and maintenance. The difficulty of the reactor increases the safety and stability requirements during the operation of the reactor
In addition, a higher reactor will greatly affect the aeration effect at the bottom, reduce the utilization rate of dissolved oxygen, and become a bottleneck restricting the promotion and engineering application of aerobic granular sludge technology

Method used

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  • Device for culturing aerobic granular sludge and dedicated reactor thereof
  • Device for culturing aerobic granular sludge and dedicated reactor thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1, sequencing batch type activated sludge method reactor

[0022] The sequencing batch activated sludge process reactor is composed of a closed shell, an aeration device arranged at the bottom of the closed shell and a tube bundle placed in the closed shell. The airtight casing is a cylinder, and the airtight casing is provided with an aeration hole, a water inlet hole, a mud discharge hole, four drain holes and an overflow port. One end of the aeration pipe 2 is airtightly connected with the aeration device through an aeration hole, and the other end is provided with a control valve 9 and an intake valve 10, and is exposed to the air. One end of the water inlet pipe 1 is airtightly connected with the airtight casing through the water inlet hole, and the other end is provided with a control valve 9 and a water inlet valve 8, and is airtightly connected with the water inlet system. One end of the four drain pipes 6 is airtightly connected with the airtight ca...

Embodiment 2

[0023] Embodiment 2, the device of cultivating aerobic granular sludge

[0024] The device for cultivating aerobic granular sludge consists of a water inlet system, the sequencing batch activated sludge process reactor of Example 1, drainage, sludge discharge system and control system. The water inlet system, the drainage system and the sludge discharge system are connected with the sequencing batch type activated sludge process reactor in the manner described in Example 1. The control system consists of a time controller and online monitoring equipment for operating parameters (on-line DO determination, on-line sludge concentration measurement, and on-line pH measurement). The time controller is connected with the water inlet system, aeration device and drainage system to precisely control each period of the SBR reaction, and at the same time integrate online monitoring equipment to dynamically understand and respond to abnormal conditions of the reaction system.

[0025] Un...

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Abstract

The invention discloses a device for culturing aerobic granular sludge and a dedicated reactor thereof. The dedicated reactor of the device for culturing the aerobic granular sludge comprises an enclosed shell, an aeration device arranged at the bottom of the enclosed shell and a tube bundle arranged in the enclosed shell, wherein, the enclosed shell is provided with at least one aeration hole, a water inlet hole, a sludge discharging hole and a draining hole; the tube bundle is composed of 19 pipes with the height-diameter ratio more than or equal to 10:1; the cross section of the pipe is parallel to the bottom surface of the enclosed shell; and a space is reserved between the lower pipe opening of the pipe and the bottom of the enclosed shell. The invention also discloses a device with the dedicated reactor of the device for culturing the aerobic granular sludge, which ensures the height-diameter ratio needed in sludge granulation, increases the whole intensity of large-sized reactors, simultaneously has the advantages of convenient operation management, cleaning and maintenance, and is monitored on line in the whole course, and can realize automation.

Description

technical field [0001] The invention relates to a device for cultivating aerobic granular sludge and a special reactor thereof. Background technique [0002] Aerobic granular sludge is a biopolymer formed by the self-fixation process of ordinary activated sludge under aerobic conditions. It has the advantages of low water content, good sedimentation, large biomass and rich microbial populations. Since the 1990s Since it was not reported, it has rapidly become a research hotspot in the field of water treatment. Studies have shown that aerobic granular sludge is easy to be cultivated in sequencing batch bioreactors (SBR) with a large aspect ratio (greater than 10:1), mainly because gas and liquid are easy to flow in the longitudinal direction of such reactors. Rotating motion is generated, which drives the sludge in the reactor to rotate in the same direction, thereby promoting the granulation of sludge. At present, most of the existing aerobic granular sludge engineering at...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 倪晋仁姚磊
Owner PEKING UNIV
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