Composite biological rotary net device and synchronous nitrification and denitrification method thereof

A biological and network transfer technology, which is applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc. problems, to achieve the effect of upgrading transformation and denitrification technology transformation, reducing energy consumption, common materials and accessories
CN101913705AInactive Publication Date: 2010-12-15四川省工业环境监测研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
四川省工业环境监测研究院
Publication Date
2010-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a composite biological rotary net device and a synchronous nitrification and denitrification method thereof. The method is characterized by comprising the following steps of: calculating the number of the composite biological rotary net devices to be arranged according to the quantity of waste water to be treated, CODCr (Chemical Oxygen Demand) and the concentration of NH3-N, and placing the composite biological rotary net devices in one same biological reaction tank; adding a microbial agent or introducing activated sludge to form a synchronous nitrification and denitrification period in a process system; starting a reduction box (9) to drive a chain gear (7) to drive an upper rotary frame (3), a lower rotary frame (4) and carriers (10, 11) to rotate, and opening an air pipe valve (8); introducing 1.5-2 mg / L of dissolved oxygen to a water area of the upper rotary frame (3) through a middle single-side aerator pipe (5) so that the dissolved oxygen is provided for a biological film on the biological carrier (10) for an aerobic nitrification reaction; and isolating the diffusion of dissolved oxygen through an oxygen diffusion isolating board (6) and the rotation direction adjustment of the carrier (10). The concentration of water dissolved oxygen on the lower rotary frame (4) is 0.2-1.0 mg / L, and a biological film on the biological carrier (11) performs a biological anaerobic denitrification reaction under anaerobic conditions.
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Description

technical field

[0001] The invention relates to a wastewater biochemical denitrification treatment device and a simultaneous nitrification and denitrification denitrification treatment method thereof, belonging to the field of wastewater biological denitrification treatment. Background technique

[0002] At present, a lot of research and experiments have been done on biological denitrification at home and abroad. The main direction is to carry out around high efficiency, energy saving and reducing operating costs. Among them, there are two most attention-getting ones. One is "short-range nitrification and denitrification". "Biological denitrification technology; the second is "simultaneous nitrification and denitrification" biological denitrification technology. In recent years, these two processes have been used as key research topics in the treatment of high-concentration organic wastewater. There have been successful cases of "short-cut nitrification and denitrification"...

Claims

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