Hydrolysis/aerobic cycle suspension activated sludge process and device for deep treatment of waste water

An activated sludge method and advanced treatment technology, applied in the field of water treatment, can solve the problems of high investment and complicated operation, achieve high sludge concentration, high treatment efficiency, and improve the effect of wastewater treatment depth

Active Publication Date: 2013-05-29
上海心缘环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a hydrolysis / aerobic circulation suspended activated sludge method and device for advanced treatment of wastewater in order to overcome the defects of high investment and complicated operation of the existing wastewater treatment method

Method used

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  • Hydrolysis/aerobic cycle suspension activated sludge process and device for deep treatment of waste water
  • Hydrolysis/aerobic cycle suspension activated sludge process and device for deep treatment of waste water
  • Hydrolysis/aerobic cycle suspension activated sludge process and device for deep treatment of waste water

Examples

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Embodiment 1

[0032] A waste water advanced treatment device, such as figure 1 shown. The wastewater advanced treatment device comprises a hydrolysis tank 1, an aerobic tank 2 and a secondary sedimentation tank 3, the outlet of the hydrolysis tank 1 is connected with the inlet of the aerobic tank 2, and the outlet of the aerobic tank 2 is connected with the secondary sedimentation tank 3 The inlet is connected, a first return pipe 4 is set from the aerobic tank 2 to the hydrolysis tank 1, and a second return pipe 5 is set from the secondary sedimentation tank 3 to the hydrolysis tank 1.

Embodiment 2

[0034] A petrochemical wastewater treatment project in Shandong: the wastewater contains petroleum, volatile phenols and alcohols, and the wastewater volume of the project is 2000-2500m 3 d -1 , Wastewater COD: 500-1500mg·L -1 , volatile phenol 50-150mg·L -1 , pH 8-9. The wastewater advanced treatment device of Example 1 was used to treat the production wastewater.

[0035] In the wastewater advanced treatment device: (1) The effective volume of the hydrolysis tank is 2300m 3, equipped with an underwater propeller for stirring, the power of the single machine is 2.2kw; (2) The effective volume of the aerobic pool is 3700m 3 , the aerobic tank is installed with HS strong shear aerators, arranged in a linear arrangement, and the aeration intensity is 16m 3 / min / 1000m 3 ; (3) The diameter of the secondary settling tank is 16m, and the surface load is 0.41-0.52m 3 / m 2 / h.

[0036] Since the waste water contains volatile phenol, a toxic and harmful substance, the volume r...

Embodiment 3

[0041] A pharmaceutical wastewater treatment project in Guizhou

[0042] The enterprise is a pharmaceutical company that mainly produces 10 kinds of production dosage forms including tablets, capsules, pills, granules, syrups, etc. The waste water mainly comes from the production process of Chinese patent medicines, and the water volume is 2400m 3 d -1 , COD concentration is 5000mg·L -1 . The wastewater advanced treatment device of Example 1 was used to treat the production wastewater.

[0043] In the wastewater advanced treatment device: (1) The effective volume of the hydrolysis tank is 4300m 3 , equipped with two underwater propellers (stirring function), the single unit power is 1.8kw; (2) The effective volume of the aerobic pool is 9000m 3 , the aerobic tank is equipped with HS strong shear aerators, arranged in a linear arrangement, and the aeration intensity is 26.9m 3 / min / 1000m 3 ; (3) The diameter of the secondary settling tank is 15m, and the surface load is 0...

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Abstract

The invention discloses a hydrolysis / aerobic cycle suspension activated sludge process and device for deep treatment of waste water. The hydrolysis / aerobic cycle suspension activated sludge process adopts a suspension activated sludge process and comprises the following steps of: enabling waste water to enter a hydrolysis tank to be subjected to anaerobic hydrolysis, then enabling the waste water to enter an aerobic tank to be subjected to deep treatment, and finally enabling the waste water to enter a secondary sedimentation tank to be subjected to mud-water separation, so that the waste water can be discharged, wherein backflow ratio of mixed solution of the aerobic tank returning to the hydrolysis tank is 1.0-8.0, and the backflow ratio of sludge of the secondary sedimentation tank returned to the hydrolysis tank is 0.5-2.0. The hydrolysis / aerobic cycle suspension activated sludge device comprises the hydrolysis tank, the aerobic tank and the secondary sedimentation tank, wherein the outlet of the hydrolysis tank is connected with the inlet of the aerobic tank, the outlet of the aerobic tank is connected with the inlet of the secondary sedimentation tank, a first return pipe is arranged from the aerobic tank to the hydrolysis tank, and a second return pipe is arranged from the secondary sedimentation tank to the hydrolysis tank. The treatment method disclosed by the invention has the characteristics of simple flow, easiness for operation, high treatment efficiency and low running cost.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a hydrolysis / aerobic circulation suspended activated sludge method and a device for advanced wastewater treatment. Background technique [0002] In order to curb the further deterioration of the water environment quality, the national comprehensive sewage discharge standard has been gradually raised, and improving the depth of wastewater treatment has become a development hotspot in the field of water treatment. [0003] After conventional biochemical treatment, the secondary effluent still contains a lot of biodegradable organic matter (BCOD). In order to improve the treatment depth of wastewater, the secondary effluent needs to be further treated. Coagulation-sedimentation, adsorption, filtration, advanced oxidation, membrane technology, etc. are usually used as technologies for further treatment of secondary effluent. In fact, there are different applications, but these methods,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/12
CPCY02W10/10
Inventor 金锡标邱海兵仇鑫耀卓宁泽杨崇斌
Owner 上海心缘环境工程有限公司
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