Method and device for realizing phosphorus recovery during enhanced biological phosphorus removal process via heat treatment

A technology for biological phosphorus removal and phosphorus recovery, applied in the field of phosphorus recovery, can solve problems such as unstable methods, achieve great application value, reduce emissions, and improve system stability.

Inactive Publication Date: 2015-06-17
UNIV OF SCI & TECH OF CHINA
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  • Claims
  • Application Information

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Problems solved by technology

However, since the metabolic process of microorganisms is affected by various factors, such as the type of carbon source, temperature, pH value and other factors, the method of releasing phosphorus by adding carbon source is not very stable.

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  • Method and device for realizing phosphorus recovery during enhanced biological phosphorus removal process via heat treatment

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments thereof. However, the protection orientation of the present invention is not limited to the following examples, and should include all content in the claims.

[0024] Such as figure 1 As shown, in the process of enhanced biological phosphorus removal, thermal treatment is used to induce phosphorus release and realize phosphorus recovery without sludge discharge. Connect the secondary reactor 15 for heat treatment phosphorus release and recovery, the time program control device 1 connected with the main reactor, water supply device, drainage device, the first automatic dosing device 2, stirring device and oxygen supply for oxygen in the reactor The device is a mud-water separation device 14 connected to the secondary reactor, a chemical precipitation device 11, and the chemical precipitation device 11 is also connected to a second automatic dosi...

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Abstract

The invention provides a method for realizing phosphorus recovery during an enhanced biological phosphorus removal process via heat treatment. The method comprises the following steps of: (1) performing sequencing batch-type treatment on activated sludge and sewage, wherein the treatment method comprises the steps of charging oxygen in a stirring condition and adjusting the pH value of the system, and the reaction raw materials comprise acetate; and (2) performing heating treatment on the sludge-sewage mixture obtained in the step (1) in an anaerobic condition, and then performing sludge-sewage separation and phosphorus recovery. With the adoption of the novel method provided by the invention, the application range of the existing enhanced biological phosphorus removal process can be greatly expanded, and the stability of the system can be improved; simultaneously, the generation of sludge can also be reduced, the time and economic cost can be reduced, the energy consumption of the system can be reduced, and the engineered and large-scale development of the enhanced biological phosphorus removal process can be promoted; and additionally, with the adoption of the novel method provided by the invention, phosphorus removal is realized. Compared with the traditional technology, the novel method is higher in application value.

Description

technical field [0001] The invention relates to the technical fields of sewage treatment technology and resource recovery, in particular to a method and a device for realizing phosphorus recovery in the process of strengthening biological phosphorus removal through heat treatment. Background technique [0002] In recent years, with the rapid development of the national economy, the continuous improvement of industrialization and urbanization, the phenomenon of water pollution in my country has become increasingly serious, and the problem of eutrophication in water bodies has become increasingly frequent. Excessive discharge of phosphorus is the main factor causing eutrophication in water bodies. Therefore, in sewage Phosphorus removal treatment is generally required before being discharged into natural water bodies. At the same time, phosphorus is a constituent element of DNA, RNA and ATP in cells, plays a very important role in life activities, and has an irreplaceable role ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C01B25/00
Inventor 曾建雄夏成望马云杰陆勇泽申晓菲何佳
Owner UNIV OF SCI & TECH OF CHINA
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