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Short-range nitrification/denitrification dephosphorization-series device and method for synchronously recovering phosphorus

A technology for denitrification phosphorus removal and short-range nitrification, which is applied in the field of devices for synchronously recovering phosphorus by short-range nitrification and serial denitrification and phosphorus removal, can solve problems such as low phosphorus content, reduce nitrogen load, save carbon source and aeration amount, Avoid the effect of influence

Active Publication Date: 2015-09-02
BEIJING UNIV OF TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The main challenge in recovering phosphorus from domestic sewage is the low phosphorus content (generally <10mg / L)

Method used

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  • Short-range nitrification/denitrification dephosphorization-series device and method for synchronously recovering phosphorus

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail: as figure 1 As shown, the short-range nitrification series denitrification dephosphorization and phosphorus recovery device is equipped with urban sewage raw water tank (1), short-range nitrification reactor (2), phosphorus recovery water tank (3), denitrification phosphorus removal and phosphorus recovery reactor (4), dosing box (5); It is characterized in that, urban sewage raw water tank (1) is connected with short-range nitrification reactor (2) by water inlet pump (2.1); Short-range nitrification reactor (2) is connected by drainage pump ( 2.6) It is connected with the denitrification phosphorus removal and phosphorus recovery reactor (4); the treated water of the denitrification phosphorus removal and phosphorus recovery reactor (4) is discharged through the drain valve Ⅰ (4.6); the denitrification phosphorus removal and phosphorus recovery react...

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Abstract

The invention discloses a short-range nitrification / denitrification dephosphorization-series device and method for synchronously recovering phosphorus. The device comprises a municipal sewage raw water tank, a short-range nitrification reactor, a phosphorus recovery water tank, a denitrification dephosphorization / phosphorus recovery reactor and a dosing tank. The method comprises the following steps: municipal sewage enters the short-range nitrification reactor to perform denitrification and short-range nitrification; the sewage enters the denitrification dephosphorization / phosphorus recovery reactor to implement synchronous denitrification and dephosphorization, enters an aerobic section to sufficiently absorb phosphorus, and is discharged after reaching the standard; a certain volume of carbon source in the dosing tank enters the denitrification dephosphorization / phosphorus recovery reactor; microbes ingest the provided carbon source to store PHA and release abundant phosphorus; and a certain volume of treated water containing abundant phosphorus is recovered as a high-concentration phosphorus solution. The method can implement synchronous denitrification dephosphorization and phosphorus recovery, treats the sewage and recovers the resources.

Description

Technical field: [0001] The invention relates to a short-range nitrification series denitrification phosphorus removal device and method for synchronous phosphorus recovery, belonging to the field of sewage biological treatment technology and resource recovery. Background technique: [0002] With the increasing eutrophication of water bodies, biological nitrogen and phosphorus removal processes have been widely studied and applied. At present, my country is in a period of rapid economic development. With the growth of economy and the improvement of people's living standards, the water consumption continues to increase. The traditional sewage treatment process is difficult to ensure the removal of total nitrogen in urban sewage with low carbon-to-nitrogen ratio without adding external carbon sources. Therefore, how to increase the removal rate of pollutants while reducing the cost has become the main challenge for urban sewage treatment with low carbon-to-nitrogen ratio. De...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 王淑莹吉建涛何岳兰李健伟王梅香彭永臻
Owner BEIJING UNIV OF TECH
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