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Composite sedimentation tank

A composite sedimentation and tank body technology, applied in the field of composite sedimentation tanks, can solve the problems of low efficiency of effective volume use and large floor area of ​​sedimentation tanks, and achieve improved volume utilization and sedimentation effects, high land utilization, and compact effect

Inactive Publication Date: 2012-11-07
江苏江大环境工程有限责任公司
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Problems solved by technology

[0002] At present, improving the volume utilization rate of sedimentation facilities in sedimentation tanks has always been a difficult problem in environmental engineering water treatment technology for wastewater treatment. Structural form of flow sedimentation tank; for places where the land occupation is relatively tight, there are disadvantages such as large area of ​​sedimentation tank and low efficiency of effective volume use

Method used

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  • Composite sedimentation tank
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Embodiment

[0027] In part of the sewage treatment unit of the first-stage project of a sewage treatment plant, the sedimentation tank adopts a circular sedimentation tank with a diameter of φ9.0×4.5m, and the preliminary pretreatment facilities are three continuous reaction tanks of 2.0×2.0m×3.0m. The subsequent sewage treatment is a 9.0×2.0m×4.5m filter and disinfection tank (see the layout drawing of part of the sewage treatment unit in the first phase of the project) Figure 5 ).

[0028] In this part of the sewage treatment unit after the expansion of the second phase of the sewage treatment plant, the sedimentation tank is now implemented in the form of a square tank body and a circular truncated inverted cone bottom structure, with a diameter of 9.0×4.5m, and the sedimentation tank The area is increased by more than 25%, which further improves the volume utilization rate of the sedimentation tank and strengthens the sedimentation effect; the initial pretreatment facility is still three...

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Abstract

The invention aims to provide a composite sedimentation tank with small area and high usage efficiency of effective volume. Wastewater enters a water distribution area in a central pipe through a water inlet pipe; then slurry enters a sedimentation zone for sludge-water separation through a gap between a horn mouth and a reflecting plate; clarified water rises to a clarification zone and overflows to an overflow drain through an overflow weir for discharging; the sludge with higher specific gravity sinks to a sludge area, and is scraped into a sludge hopper by a sludge scraper of a center driving sludge scraping device, and discharged from a sludge discharge pump and a sludge discharge pipe. Compared with a conventional sedimentation tank, the sedimentation tank provided by the invention is in a square structure, can be implemented in a modularization way and combined with other wastewater pretreatment facilities and the follow-up wastewater treatment facilities in a modularization way, has the advantages of compact structure, high utilization rate of occupied area, area saving by 20%-30%, and can further improve volume utilization ratio and sedimentation effect of the sedimentation tank.

Description

technical field [0001] The invention relates to a sedimentation facility, in particular to this compound sedimentation tank. Background technique [0002] At present, improving the volume utilization rate of sedimentation facilities in sedimentation tanks has always been a difficult problem in environmental engineering water treatment technology for wastewater treatment. Structural form of flow sedimentation tank; for places where the land occupation is relatively tight, there are disadvantages such as large occupation area of ​​the sedimentation tank and low efficiency of effective volume use. Contents of the invention [0003] The purpose of the present invention is to provide a compound sedimentation tank with small occupation area and high effective volume utilization efficiency. [0004] The composite sedimentation tank includes a tank body and a sewage discharge device, and is characterized in that it is also provided with a central diversion device, a central tran...

Claims

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Application Information

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IPC IPC(8): B01D21/06B01D21/24
Inventor 徐亮
Owner 江苏江大环境工程有限责任公司
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