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Device and method for enhancing biological phosphorus removal based on synergistic effect of double phosphorus-accumulating bacteria

A biological phosphorus removal and synergistic technology, applied to chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of insufficient research on the synergistic effect of Tetrasphaera and Candidatus Accumulibacter, and reduce operating costs and save The effect of adding and reducing dependence

Active Publication Date: 2020-11-27
BEIJING UNIV OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

Most of the existing studies on Tetrasphaera have explored its utilization of substrates, and there is insufficient research on the synergy between Tetrasphaera and Candidatus Accumulibacter

Method used

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  • Device and method for enhancing biological phosphorus removal based on synergistic effect of double phosphorus-accumulating bacteria

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Embodiment Construction

[0017] The patent application is further described in conjunction with accompanying drawings and examples: as figure 1 As shown, the present invention comprises that the waste water tank (1) is connected with the biological phosphorus removal reactor (5) through the water inlet peristaltic pump (2), and the sludge storage tank (3) reacts with the biological phosphorus removal through the sludge peristaltic pump (4) simultaneously The biological phosphorus removal reactor is equipped with an agitator (6) and a water outlet (10), the air pump (7) passes through the rotameter (8) and the aeration plate (9) installed at the bottom of the biological phosphorus removal reactor connect.

[0018] The test water used in the specific example contains a phosphate concentration of 5mg / L, no external carbon source is added to the synthetic wastewater, and the effective volume of the biological phosphorus removal reactor is 8L.

[0019] The specific implementation process is as follows:

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Abstract

A device and a method for enhancing biological phosphorus removal based on synergistic effect of double phosphorus-accumulating bacteria belong to the technical field of biological sewage treatment. The device comprises a water inlet tank, a biological phosphorus removal reactor, a peristaltic pump, a sludge storage tank and an air pump. According to the method, residual sludge is taken as a matrix and enters the biological phosphorus removal reactor together with wastewater, and in an anaerobic stage, a phosphorus-accumulating bacterium Tetrasphaera with fermentation capability generates volatile fatty acid (VFA) by using residual sludge as a matrix and supplies the volatile fatty acid (VFA) to the traditional phosphorus-accumulating bacteria Candidatus Accumulibacter for utilization, stores an internal carbon source and releases phosphate; and in an aerobic stage, phosphate in sewage can be excessively absorbed by the phosphorus-accumulating bacteria Tetrasphaera and Candidatus Accumulibacter together, so that the synergistic phosphorus removal is realized. By utilizing the synergistic effect of the phosphorus-accumulating bacteria Tetrasphaera and Candidatus Accumulibacter, thedependence on inlet water VFA can be reduced, meanwhile, phosphorus is absorbed by the phosphorus-accumulating Tetrasphaera and Candidatus Accumulibacter at the same time in an aerobic stage, biological phosphorus removal can be effectively enhanced, and a brand-new process solution is provided for treatment of sewage lack of carbon sources in many regions.

Description

technical field [0001] The invention relates to a device and method for strengthening biological phosphorus removal based on the synergistic effect of bipolyphosphorous bacteria, belonging to the technical field of sewage biological treatment. Background technique [0002] Eutrophication of water bodies has become a global water environment problem. A large number of studies have shown that excessive discharge of phosphorus-rich sewage is the main cause of eutrophication in surface water bodies. Biological phosphorus removal process is an economical and effective phosphorus removal technology, which has been widely used in sewage treatment plants all over the world. Candidatus Accumulibacter, as a typical phosphorus accumulating bacteria, is considered to be the most common phosphorus accumulating bacteria in sewage treatment plants, which can use oxygen, nitrite and nitrate as electron acceptors for phosphorus removal. [0003] With the discovery and isolation of a phospho...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F101/10
CPCC02F3/30C02F2101/105
Inventor 曾薇樊志伟孟庆安彭永臻
Owner BEIJING UNIV OF TECH
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