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Low energy consumption oxygenation method and system for organic waste water biochemical treatment

A technology for biochemical treatment and organic wastewater, applied in the field of oxygenation, can solve the problems of high operating cost and large power consumption of sewage treatment, and achieve the effects of simple structure, convenient construction and installation, and low energy consumption.

Inactive Publication Date: 2008-05-07
NANJING UNIV
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Problems solved by technology

Blast aeration is an aeration method in which air bubbles are introduced into water by means of an aerator—a diffuser tube or a diffuser plate. Mechanical aeration is an aeration method in which air bubbles are introduced by using impellers and other devices. It consumes a lot of electricity, which makes the operation cost of sewage treatment very high

Method used

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  • Low energy consumption oxygenation method and system for organic waste water biochemical treatment
  • Low energy consumption oxygenation method and system for organic waste water biochemical treatment
  • Low energy consumption oxygenation method and system for organic waste water biochemical treatment

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Embodiment Construction

[0018] Utilize the process of converting potential energy of water into kinetic energy to oxygenate wastewater. The oxygenation device is a number of Venturi jets to meet the oxygen demand in the process of biological contact oxidation treatment, replacing the blast aeration device with high energy consumption, reducing Energy consumption during biological treatment of organic wastewater.

[0019] As shown in Figure 1, the wastewater in the regulating tank 1 is pumped into the high-level water tower 3 by the lifting pump 4, the bottom end of the water delivery pipe of the high-level water tower 3 is connected with the Venturi jet 5, and the wastewater in the high-level water tower 3 passes through the Venturi jet 5 After oxygenation, it enters the primary biochemical pool 2, the intermediate pool 8, the secondary biochemical pool 9, the inclined tube sedimentation tank 10 and the sand filter tank 11, and the sludge generated during the treatment process enters the sludge drying...

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Abstract

The invention relates to a low energy consumption oxygenation method and a system in organic sewage biochemical treating. The method is characterized in that the fall of the water is utilized to ensure that water is oxygenized through a manner of jet current when the gravitational potential energy of the water converts into the kinetic energy. The system is characterized in that a high level water tower is arranged between an adjusting pool and a first level biochemical pool; a water transporting pipe between the adjusting pool and the high level water tower is internally provided with a lifting pump; the bottom end of the water transporting pipe between the high level water tower and the first level biochemical pool is provided with a Venturi ejector. The invention can ensure that the water is favorably oxygenized under comparatively lower energy consumption, satisfy the demand of the organism contacting oxidation art to the dissolved oxygen in the sewage, and replace the common blast aeration device. The invention has simple structure and convenient construction and mounting.

Description

technical field [0001] The invention relates to an oxygenation method in the biochemical treatment of organic wastewater, more specifically a low energy consumption oxygenation method in the biochemical treatment of organic wastewater. Background technique [0002] At present, aerobic biological method is the most widely used method for the treatment of medium and low concentration organic wastewater, and the part with the highest energy consumption in aerobic biological method is aeration, which uses corresponding equipment and technical measures to make the oxygen in the air The process of being transferred to the mixed liquid and used by microorganisms. There are two types of aeration, one is blast aeration and the other is mechanical aeration. Blast aeration is an aeration method in which air bubbles are introduced into water by means of an aerator—a diffuser tube or a diffuser plate. Mechanical aeration is an aeration method in which air bubbles are introduced by using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/24
CPCY02W10/10
Inventor 孙亚兵冯景伟李署杨海锋徐跃武张曼君朱洪标周晓霞唐军
Owner NANJING UNIV
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