Denitrification aerobic granular sludge sequencing batch reactor and work method thereof

A technology of aerobic granular sludge and sequencing batch reactor, applied in chemical instruments and methods, aerobic and anaerobic process treatment, water/sludge/sewage treatment, etc., can solve the problem that cannot provide aerobic granular pollution The problem of less application of mud and integrated equipment, low oxygen utilization rate, etc., to achieve the effect of improving the path and residence time, superior mass transfer effect, and improving oxygen utilization rate

Pending Publication Date: 2018-10-09
南宁绿智环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few examples of engineering applications, and even fewer integrated equipment applications
[0006] At present, the traditional batch-type biological aerobic process includes CASS and SBR processes, most of which are pools with concrete structure, the depth of the pool is generally less than 8 meters, the floor area is large, the utilization rate of oxygen is low, and the energy consumption of oxygen supply is high. In the operation of flocculent sludge, the process system cannot provide the hydraulic shear force required to form aerobic granular sludge (AGS), which is likely to cause problems such as load shock, insufficient carbon source, and sludge bulking.

Method used

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  • Denitrification aerobic granular sludge sequencing batch reactor and work method thereof
  • Denitrification aerobic granular sludge sequencing batch reactor and work method thereof
  • Denitrification aerobic granular sludge sequencing batch reactor and work method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] A nitrogen-removing aerobic granular sludge sequencing batch reactor, comprising a tank body 1, an aeration system 5, a water inlet pipe 26, a gas-water separator 2, an upper return pipe 11, an upper return nozzle 13, a lower return pipe 10, First cross pipe, lower backflow nozzle 12, gas collecting hood 4, air collecting pipe 14, decanter 3, drain pipe, external circulation pipe 37, external circulation pump 20, pipeline ejector 27, second cross pipe, internal diversion Plate 30, middle deflector 31 and biological rope packing layer 6;

[0048] The aerator system 5 is installed inside the tank body 1, above the aerator system 5 is the nitrification zone 8, below the aerator system 5 is the denitrification zone 9, and the space between the denitrification zone 9 and the bottom of the tank is the water distribution mixing zone 6;

[0049] The gas-water separator 2 is installed on the top of the tank body 1, one end of the upper return pipe 11 is connected to the bottom ...

Embodiment 2

[0070] Biological rope packing 3, 9 spacing 20-40 centimeters.

[0071] The ratio of height to diameter of the tank body 1 is 1:1-4:1; the nitrification zone 8 is from the upper part of the aeration system 5 to the top of the tank, accounting for 1 / 2-2 / 3 of the height of the tank body 1; the denitrification zone 8 is the aeration system 5 From the bottom to the bottom of the tank, it accounts for 1 / 3-1 / 2 of the height of the tank body 1.

[0072] Both the tank body 1 and the gas-water separator 2 are columnar.

[0073] The water inlet pipe 26 enters the tank body 1 to 30-50 cm tangentially along the tank wall of the tank body 1

[0074] The number of upper return nozzles 13 is more than 3 groups and arranged evenly.

[0075] The gas collecting hood 4 is conical with the large diameter end of 30 °-65 ° on the lower small diameter end, and the large diameter end edge of the gas collecting hood 4 is 20-50 centimeters away from the tank body 1 cylinder wall.

[0076] The first ...

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PUM

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Abstract

The invention provides a denitrification aerobic granular sludge sequencing batch reactor. An aerator system is arranged inside a tank body; a nitrification region is arranged above the aerator system; a denitrification region is arranged under the aerator system; a space from a position under the denitrification region to the tank bottom is a water distribution mixing region; a gas water separator is arranged on the top of the tank body; one end of an upper backflow pipe is connected onto the bottom of the gas water separator; the other end of the upper backflow pipe is positioned in a nitrification region and is provided with a plurality of upper backflow spray heads; one end of a lower backflow pipe is connected to the bottom of the gas water separator; the other end of the lower back flow pipe is connected to a first cross-shaped pipe; a plurality of lower backflow spray heads are arranged on the first cross-shaped pipe. Through the reasonable design of hydraulic power and mass transfer, the air lifting kinetic energy is formed by the density pressure difference generated by a reactor under the aeration work condition; the fluid is downwards discharged to be sprayed out to formcyclone mixing by using the position differences and the pressure differences; the fluid speed is accelerated; the hydraulic shearing power is enhanced; the path and dwell time of the air in the water can be improved; the oxygen utilization rate is improved; the flocculent sludge can be used for starting so as to form aerobic particle sewage.

Description

technical field [0001] The invention relates to a biological denitrification aerobic granular sludge reactor, which belongs to the technical field of biological denitrification aerobic granular sludge, in particular to a Denitrification aerobic granular sludge sequence batch reactor (Denitrification aerobic granular sludge sequence batch reactor) reactor, DAGS-SBR reactor). technical background [0002] Aerobic Granular Sludge (AGS) is a granular activated sludge formed by microbial self-aggregation. Compared with ordinary activated sludge, it is less prone to sludge bulking, has strong impact resistance, and can withstand high The organic load is characterized by the integration of different types of microorganisms (aerobic, facultative and anaerobic microorganisms). The self-aggregation process of microorganisms is a complex physical, chemical and biological process, and its granulation is affected by various environmental factors. To provide suitable hydraulic shear forc...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F3/30C02F101/16
CPCC02F3/1263C02F3/302C02F2101/16Y02W10/10
Inventor 林应强卢誉远熊庆明周淑珍林叶俊龙
Owner 南宁绿智环保科技有限公司
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