Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof

A three-dimensional circulation and oxidation ditch technology, applied in chemical instruments and methods, separation methods, precipitation and separation, etc., can solve the problems of large floor space, increased water flow resistance, poor operation adjustment performance, etc., and achieves good effect and unique reflux method. , Improve the effect of hydraulic load

Inactive Publication Date: 2003-12-31
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

Its disadvantages are: the secondary sedimentation tank is built in the circulation channel, which increases the water flow resistance and increases the requirements for aeration equipment
Poor run regulation
Since the mixed liquid in the reaction tank still circulates continuously in the horizontal direction, the water depth is generally not more than 3 meters due to the limitation of the aeration capacity, so there is still the problem of too large occupied area

Method used

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  • Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof
  • Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof
  • Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof

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Embodiment 1

[0038] A three-dimensional circulation integrated oxidation ditch, the oxidation ditch is divided into upper and lower parts by a partition, and there are channels on both sides, the upper part is an aerobic area, and the lower part is an anoxic area; on the side wall of the upper part of the three-dimensional circulation oxidation ditch There is a water inlet, and an aeration brush driven by a motor is installed in front of the water inlet; solid-liquid sedimentation separators are respectively installed on the side walls at both ends of the three-dimensional circulation oxidation ditch, and the solid-liquid sedimentation separator is separated by a sloping plate. The inlet of the mixed solution is covered as an inclined opening, and an overflow weir and a water outlet are provided on the upper side wall, and a sludge return port is opened on the other side wall at the lower part of the three-dimensional circulation oxidation ditch.

[0039] The sewage containing COD of 110-440m...

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Abstract

The present invention belongs to the sewage treating apparatus adopting biochemical technology. The integrated stereo oxidation channel has two rectangular solid-liquid depositing separators, and the oxidation channel is separated with partition board into the upper aerobic area and the lower anaerobic area. Each of the solid-liquid depositing separators has inclined mixed liquid inlet in the bottom, overflow weir and water outlet on one side wall, and sludge reflowing port on the other wall. The two solid-liquid depositing separators are installed separately on two side walls of the stereo circulating oxidation channel. The stereo circulating oxidation channel has bottom isolated from air and this is favorable to forming anaerobic state and raising denitrifying efficiency. Compared with available oxidation channel, the present invention has 50 % reduced covered area.

Description

technical field [0001] The invention belongs to equipment for treating sewage by using biochemical technology, in particular to an integrated dual-sedimentation area three-dimensional circulation oxidation ditch equipment and an operating method thereof. Background technique [0002] The currently known oxidation ditch sewage treatment technology was developed in the 1950s. It mainly consists of an oxidation ditch, a secondary settling tank and a sludge return system. It is a form of activated sludge treatment method. The first device to utilize oxidation ditch treatment technology was the Pasveer oxidation ditch device, see appendix image 3 , since then various forms of oxidation ditch devices have been developed, such as the Carrousel oxidation ditch device, see attached Figure 4 , and Orbal oxidation ditch device, etc., see attached Figure 5 . [0003] The common features of these oxidation ditch devices are: the oxidation ditch is a flat cir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/00C02F3/12
CPCY02W10/10
Inventor 刘俊新夏世斌
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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