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Internal circulation type sewage treatment oxidation ditch

A technology of sewage treatment and internal circulation, applied in biological water/sewage treatment, water/sludge/sewage treatment, backflow water treatment, etc., can solve the problem that the carbon source cannot meet the denitrification reaction, the carbon source is not enough to support denitrification, Problems such as the inability to reflux the nitrification liquid, achieve stable aerobic reaction effects, satisfy a high-quality living environment, and reduce aerobic energy consumption

Inactive Publication Date: 2019-11-29
哈尔滨工大博实环境工程有限责任公司
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Problems solved by technology

[0002] The traditional oxidation ditch process does not return the reflux liquid to the anoxic section, and it is impossible to return the nitrification liquid to the anoxic section for denitrification reaction
In view of the phenomenon that most of the chemical oxygen demand of organic matter has been removed in the anaerobic section in the operation of most oxidation ditches, even if the nitrification liquid is returned to the anoxic section, the carbon source is not enough to support effective denitrification
The measured data in the actual operation shows that the chemical oxygen demand of organic matter has been reduced to close to the water quality required by the effluent in the anoxic section. The chemical oxygen demand of organic matter in the water is low, but the total nitrogen is high, and the carbon source cannot meet the requirements of denitrification reaction. demand, and the dissolved oxygen in the anoxic section is high, resulting in very little removal of total nitrogen

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  • Internal circulation type sewage treatment oxidation ditch

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Embodiment Construction

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0015] see figure 1 Description of this embodiment, an internal circulation sewage treatment oxidation ditch, which includes an anaerobic zone 1, anoxic zone 2, an aerobic zone 3 and an internal circulation control gate 4, the anaerobic zone 1 is connected to the anoxic zone 2 , the connection is provided with a water inlet 6, the anoxic zone 2 is connected to the aerobic zone 3, the connection is provided with a circulation channel and a return channel, the return channel is provided with an internal circulation control gate 4, and the anaerobic zone A raw water inlet 5 is opened on the top, and a diversion wall 7 is arranged in the anaerobic zone 1. The diversion wall 7 is arranged between the raw water inlet 5 and the water inlet 6 along the width direction of the oxidation d...

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Abstract

The invention provides an internal circulation type sewage treatment oxidation ditch, belonging to the technical field of sewage treatment. The internal circulation type sewage treatment oxidation ditch of the invention overcomes the problems that conventional oxidation ditches are poor in nitrogen and phosphorus removal effect and low in effluent discharge standard, and effectively improves removal efficiency of chemical oxygen demand. The internal circulation type sewage treatment oxidation ditch comprises an anaerobic zone, an anoxic zone, an aerobic zone and an internal circulation controlgate, wherein the anaerobic zone is connected with the anoxic zone, and a water inlet is formed in the joint of the anaerobic zone and the anoxic zone; the anoxic zone is connected with the aerobic zone, and a circulation channel and a backflow channel are formed in the joint of the anoxic zone and the aerobic zone; and the internal circulation control gate is arranged on the backflow channel. The internal circulation type sewage treatment oxidation ditch is mainly used for sewage treatment.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to an internal circulation sewage treatment oxidation ditch. Background technique [0002] The traditional oxidation ditch process does not return the reflux liquid to the anoxic section, and cannot make the nitrification liquid flow back to the anoxic section for denitrification. In view of the fact that most of the chemical oxygen demand of organic matter has been removed in the anaerobic section in most oxidation ditch operations, even if the nitrification liquid flows back to the anoxic section, the carbon source is not enough to support effective denitrification. The measured data in the actual operation shows that the chemical oxygen demand of organic matter has been reduced to close to the water quality required by the effluent in the anoxic section. The chemical oxygen demand of organic matter in the water is low, but the total nitrogen is high, and the carbon sourc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
CPCC02F3/302C02F2301/04
Inventor 李克非
Owner 哈尔滨工大博实环境工程有限责任公司
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