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A device and method for reducing the amount of excess activated sludge

A technology of residual activity and treatment device, applied in sludge treatment, biological sludge treatment, etc., can solve the problems of slow degradation rate of biological sludge, high dissolved oxygen, long reaction time, etc., to increase transfer utilization efficiency, fast and efficient The effect of separating and improving the degradation rate

Inactive Publication Date: 2016-06-08
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the aerobic biological reduction treatment method of biological sludge is mainly an aerobic digestion process at atmospheric pressure. Due to the high concentration of solids and organic matter in the remaining sludge to be treated, it needs to consume more dissolved oxygen. The oxygen transfer efficiency of the gas equipment is low, and the dissolved oxygen concentration in the mixed liquid is low. Therefore, the atmospheric sludge aerobic digestion process has a slow degradation rate to the biological sludge, which requires a long reaction time (about 20d) and relatively low Large gas supply and other issues

Method used

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  • A device and method for reducing the amount of excess activated sludge

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Comparison scheme
Effect test

Embodiment 1

[0021] A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; the high-pressure bioreactor 1 is sequentially provided with sampling Pipe 7, dosing pipe 8 and aeration air supply pipe 9.

[0022] The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.

[0023] The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .

[0024] Applying the above-mentioned device to carry o...

Embodiment 2

[0033] A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; Pipe 7, dosing pipe 8 and aeration air supply pipe 9.

[0034] The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.

[0035] The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .

[0036] Applying the above-mentioned device to carry out the method for the reduction treatment of excess activated sludge, ...

Embodiment 3

[0045] A reduction treatment device for excess activated sludge, the device includes a high-pressure bioreactor 1 and a floating separator 2, the bottom of the high-pressure bioreactor 1 communicates with the bottom of the floating separator 2 through a sample outlet pipe 3; the floating separator 2 A clarified water discharge pipe 4 is provided under one side; an exhaust main pipe 5 is provided on the top of the high-pressure bioreactor 1, and an exhaust branch pipe 6 is provided on the exhaust main pipe 5; the high-pressure bioreactor 1 is sequentially provided with sampling Pipe 7, dosing pipe 8 and aeration air supply pipe 9.

[0046] The exhaust main pipe 5 is provided with 10 exhaust branch pipes 6; each exhaust branch pipe 6 is provided with a solenoid valve 10 and a manual valve 11.

[0047] The top of the high-pressure bioreactor 1 is provided with a pressure gauge 12 and an adjustable pressure safety valve 13 .

[0048] Applying the above-mentioned device to carry o...

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Abstract

The invention belongs to the technical field of sludge processing and particularly relates to a reduction processing device and method for residual activated sludge. A specific processing device and processing method are adopted for the device and method, the residual activated sludge is processed in a multi-period pressure cyclic change mode, the oxygen transferring and utilizing efficiency is greatly improved, the degrading speed of organic matter is increased, and therefore a higher reaction rate and higher removing efficiency are achieved; the processed sludge is discharged when pressure in a biological reactor is P, scum and water can be fast and efficiently separated, the phosphorus removal step is used in an assisting mode in the processing process, insoluble phosphate and the scum can float up together to be discharged, and therefore the purpose of removing phosphorus is achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a reduction treatment device and method for surplus activated sludge. Background technique [0002] Excess sludge is the solid sediment produced in the process of sewage biological treatment, which is an accessory after sewage treatment. The main component of these excess activated sludge is bacterial cell matter, with a high concentration of organic matter and mainly solid matter. If it is not properly treated , These sludges are very easy to cause secondary pollution to groundwater, soil, etc., and become a threat to environmental safety and public health. Aerobic biological treatment technology is one of the effective methods for sludge reduction treatment. At present, the aerobic biological reduction treatment method of biological sludge is mainly an aerobic digestion process at atmospheric pressure. Due to the high solid concentration and high concentra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02
CPCY02W10/20
Inventor 刘建广张春阳
Owner SHANDONG JIANZHU UNIV
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