Method for optimizing phosphate-accumulating organism enrichment in sewage strengthened biological phosphorus removal course and method for improving properties of sewage strengthened biological phosphorus removal course

A technology for biological phosphorus removal and phosphorus accumulating bacteria, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc. Water conditions have a large impact, and the performance of enhanced biological phosphorus removal facilities is unstable, so as to achieve the effects of low construction and operation costs, reduced dependence on water inflow characteristics and carbon sources, and flexible design

Inactive Publication Date: 2018-12-14
谷中春
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  • Application Information

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Problems solved by technology

However, in practice, there are technical problems as follows: the performance of many enhanced biological phosphorus removal facilities is unstable, and phosphorus removal performance is greatly affected by influent conditions
Without consistent and effective enhanced biological phosphorus removal process performance, these facilities are forced to increasingly rely on chemical phosphorus removal, which significantly increases the cost of chemical use and adverse environmental impact

Method used

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  • Method for optimizing phosphate-accumulating organism enrichment in sewage strengthened biological phosphorus removal course and method for improving properties of sewage strengthened biological phosphorus removal course
  • Method for optimizing phosphate-accumulating organism enrichment in sewage strengthened biological phosphorus removal course and method for improving properties of sewage strengthened biological phosphorus removal course
  • Method for optimizing phosphate-accumulating organism enrichment in sewage strengthened biological phosphorus removal course and method for improving properties of sewage strengthened biological phosphorus removal course

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Effect test

Embodiment 1

[0178] Use the improved activated sludge model of the present invention and traditional ASM2 activated sludge model (Henze, M., Harremoes, P., Jansen, J.la C., Arvin, E., 2001.Wastewater Treatment: Biological and Chemical Processes, 3rd ed. Springer Science & Business Media, Berlin) respectively simulated the process of biological phosphorus removal of the same sewage, and compared the simulation results. The measured data of the wastewater biological phosphorus removal process are derived from the literature data in 2007 (Lu et al, 2007: Lu, H., Keller, J., Yuan, Z., 2007. Endogenous metabolism of Candidatus Accumulibacter phosphatis undervarious starvation conditions . Water Res. 41, 4646–4656. https: / / doi.org / 10.1016 / j.watres.2007.06.046). In this paper, an 8-day anaerobic starvation (extended anaerobic) experiment was performed using a laboratory-prepared high-abundance PAO sludge containing at least 85% Accumulibacter biomass. Sampling was carried out once a day during t...

Embodiment 2

[0186] A 36-hour anaerobic sequencing batch experiment was carried out on actual water plant sludge. And the concentration changes of phosphate, ammoniacal nitrogen and volatile organic acids were measured. The same sewage biological phosphorus removal process is simulated by using the improved activated sludge model of the present invention, and the simulation results are compared with the actual measurement.

[0187] Figure 4 It is the simulation result of the phosphate ion concentration, the volatile organic acid concentration and the free ammonia nitrogen concentration observed in the anaerobic culture experiment using the cell maintenance-apoptosis two-stage model (that is, the model of the present invention) and the comparison to the observed value. from Figure 4 It can be seen that the measured values ​​of the concentration of phosphate radicals, ammoniacal nitrogen and volatile organic acids are very consistent with the simulated results of the improved activated s...

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Abstract

The invention provides a method for optimizing design and/or operation of phosphate-accumulating organism enrichment in a sewage strengthened biological phosphorus removal course. According to the method, an improved activated sludge model is used and comprises a phosphate-accumulating organism-glycogen accumulating organism competition module and staged cell maintenance-apoptosis. In addition, the invention further provides a method for improving the properties of the sewage strengthened biological phosphorus removal course. Through adoption of the method, the dependence degree on a carbon source in influent water in a sewage organism strengthened phosphorus removal course is reduced, and besides, phosphate-accumulating organisms are enriched.

Description

technical field [0001] The invention relates to sewage phosphorus removal technology, specifically, to a sewage enhanced biological phosphorus removal technology, especially the sewage enhanced biological phosphorus removal technology under prolonged anaerobic conditions, and the enrichment of phosphorus-accumulating bacteria in the sewage enhanced biological phosphorus removal process Methods for optimizing the design and / or operation of wastewater and improving the performance of enhanced biological phosphorus removal processes for wastewater. Background technique [0002] With the demand for higher levels of treatment of phosphorus in wastewater in recent years, the emergence of more reliable and better optimized phosphorus removal methods is widely expected. Compared with the traditional chemical phosphorus removal (using chemical substances such as iron salt, aluminum salt or calcium hydroxide to react with phosphorus-containing compounds to remove phosphorus), the enha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/16C02F101/10C02F101/34
CPCC02F3/30C02F2101/105C02F2101/16C02F2101/34
Inventor 谷中春李广愉
Owner 谷中春
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