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Method and apparatus for improving treatment efficiency of up-flow type anaerobic sludge bed

A flow-type anaerobic sludge and anaerobic sludge bed technology, applied in the field of wastewater biological treatment, can solve problems such as unsatisfactory treatment efficiency, achieve the effects of small equipment structure and operating conditions, improved treatment efficiency, and small cost increase

Inactive Publication Date: 2006-01-04
SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI
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Problems solved by technology

[0005] However, there are still some limitations in the further widespread application of UASB technology at present, such as: in the case of low temperature, low organic load or more refractory components in wastewater, its treatment efficiency is not ideal

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  • Method and apparatus for improving treatment efficiency of up-flow type anaerobic sludge bed
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  • Method and apparatus for improving treatment efficiency of up-flow type anaerobic sludge bed

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Embodiment Construction

[0017] During the operation of the UASB system, it is generally necessary to maintain a stable upflow velocity (generally 0.1-5m / h) by the hydraulic circulation device. Under certain conditions, zero-valent iron has a variety of special strengthening effects on the anaerobic treatment of sewage to achieve the purpose of improving the treatment efficiency of the upflow anaerobic sludge bed. Such as figure 2 As shown, the improved UASB reactor system includes water inlet and water distribution device 1, hydraulic circulation device 2, reactor body and granular sludge bed 3, three-phase separator 4, biogas collection device 5, water outlet 6, zero price Iron container 7, zero-valent iron is placed in an airtight zero-valent iron container 7 located in the hydraulic circulation path, zero-valent iron can adopt multiple different forms of zero-valent iron, such as iron powder, iron filings, fine iron wire, etc. As long as it has a large specific surface area, the requirement for ...

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Abstract

The invention belongs to the field of biological treatment of waste water, in particular a process and apparatus for increasing upstream type anaerobic sludge bed treatment efficiency by using zero valence iron, wherein zero valence iron is added into the waterpower circulating device looped path in the UASB system, i.e. a zero valence iron container, a built-in iron wire or iron powder, the conditioning water will flow through the zero valence iron container and contact the zero valence iron, then flows back to the reactor.

Description

technical field [0001] The invention belongs to the technical field of wastewater biological treatment, in particular to a method and a device for improving the treatment efficiency of an upflow anaerobic sludge bed by using zero-valent iron. Background technique [0002] Anaerobic biological wastewater treatment technology is an effective way to remove organic pollution and reduce operating costs, and has been more and more widely used in industrial and domestic wastewater treatment at home and abroad. It has the advantages of simple equipment structure, convenient operation and maintenance, small footprint, no need for aeration, less residual sludge, and methane generation. Anaerobic biological treatment technology is considered to be the core of sustainable environmental biotechnology in the future. [0003] Upflow anaerobic sludge bed treatment technology (UASB) is a typical representative of wastewater anaerobic biological treatment technology. Since the invention of ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
Inventor 徐慧陈冠雄张颖史荣久李欣
Owner SHENYANG INST OF APPL ECOLOGY CHINESE ACAD OF SCI