System for realizing phosphorus recovery in process of enhanced biological phosphorus removal and recovery method thereof

A biological phosphorus removal and phosphorus recovery technology, applied in the field of sewage treatment technology and resource recovery, can solve problems such as the limitation of the application scope and degree of biological phosphorus removal technology, achieve great application value, improve system stability, and reduce system energy consumption. Effect

Inactive Publication Date: 2013-04-03
SUZHOU INST FOR ADVANCED STUDY USTC
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  • Abstract
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Problems solved by technology

However, there is no research and development specifically for this technology at present, which limits the application range and degree of biological phosphorus removal technology to a certain extent.

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  • System for realizing phosphorus recovery in process of enhanced biological phosphorus removal and recovery method thereof

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Embodiment

[0032] This example describes a system for realizing phosphorus recovery in the process of enhanced biological phosphorus removal, and its structural diagram is shown in Figure 1. The phosphorus recovery system includes a main reactor (9) for sequential batch activated sludge sewage treatment , a secondary reactor (15) connected to the primary reactor (9) for phosphorus release and recovery, a water supply device and a drainage device for the primary reactor (9), a stirring device arranged in the primary reactor (9), An oxygen supply device for supplying oxygen in the main reactor (9), a mud-water separation device (14) and a chemical sedimentation tank (11) for the secondary reactor (15), and an external carbon source in the secondary reactor (15) The phosphorus recovery system also includes a time control unit, which is connected to the water supply device, drainage device, stirring device and oxygen supply device respectively, and is used to control the running time of each ...

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Abstract

The invention discloses a system for realizing phosphorus recovery in the process of enhanced biological phosphorus removal and a recovery method thereof. The system comprises a main reactor, a secondary reactor, a muddy water separation device, a chemical settling pond, a water supply device, a drain device, a stirring device and an oxygen supply device, wherein the main reactor is used for carrying out sequencing batch activated sludge/wastewater treatment, the secondary reactor is connected with the main reactor and used for carrying out phosphorus release and recovery, the muddy water separation device is applied to the secondary reactor, and the oxygen supply device supplies oxygen to the insides of the reactors; and the system is characterized in that the system also comprises a time control unit, and the time control unit is respectively connected with the water supply device, the drain device, the stirring device and the oxygen supply device and used for controlling the running time of the system. According to the invention, the production of sludge in the process of enhanced biological phosphorus removal can be reduced, the energy consumption of the running of the system can be reduced, and meanwhile, the phosphorus recovery can be simultaneously realized, so that economic benefits are obtained.

Description

technical field [0001] The invention relates to the field of sewage treatment technology and resource recovery, in particular to a system and a recovery method for realizing phosphorus recovery in an enhanced biological phosphorus removal process. Background technique [0002] In the development of modern agriculture, the use of phosphorus fertilizer is irreplaceable. However, the application of phosphate fertilizers is facing severe challenges in recent years. On the one hand, the non-renewable phosphate rock restricts the sustainable use of phosphate fertilizer; on the other hand, the phosphorus lost due to irrational use in agricultural production leads to serious water eutrophication. Therefore, the recovery and reuse of phosphorus in polluted water has dual practical significance of sustainable development and environmental protection. [0003] Since the mid-1970s when people discovered and began to study the process technology of phosphorus removal in sewage, the res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 曾建雄夏成望马云杰
Owner SUZHOU INST FOR ADVANCED STUDY USTC
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