Application of apo/biological contact oxidation short-cut nitrification coupled with anaerobic ammonium oxidation autotrophic denitrification three sludge plant method

Abstract

The invention discloses an APO / biological contact oxidation partial nitrification coupled anaerobic ammonium oxidation autotrophic nitrogen removal tri-sludge device and method. The system mainly comprises a water tank of raw water, an APO reactor, an inclined plate sedimentation area, a biological contact oxidation partial nitrification reaction area, an intermediate regulation water tank, an anaerobic ammonium oxidation reaction area, a real-time control box and a computer. A temperature sensor and a DO sensor are used for online collection of temperature and concentration of dissolved oxygen of the biological contact oxidation partial nitrification reaction area, output is performed through the computer, and the control of the nitrification process can be realized by regulating a heater and the aeration amount in the area; an NH4<+> sensor, an NO2<-> sensor and an NO3<-> sensor are used for online collection of the concentrations of ammonia nitrogen, nitrites and nitrates in the intermediate regulation water tank, and the adjustment of the dissolved oxygen, the aeration amount and the flow rate of a beyond pipeline can be realized by outputting through the computer according to collected signals. The operation of the system is stable by online monitoring of real-time control equipment and timely regulation and control, and the practicality and controllability of the device are further improved.

Description

technical field [0001] The invention belongs to the technical field of sewage biological treatment, in particular to A P A real-time control process coupled with O reaction zone, biological contact oxidation short-cut nitrification reaction zone and anaerobic ammonium oxidation reaction zone and an enhanced nitrogen and phosphorus removal method based on it. Background technique [0002] At present, most of the sewage treatment plants adopt the traditional nitrogen and phosphorus removal process, but in the case of no additional carbon source, the denitrification carbon source is insufficient, it is difficult to ensure the removal rate of low carbon nitrogen ratio of total nitrogen in urban sewage, and the efficiency of nitrogen and phosphorus removal is not good. high and high energy demand. With the rapid development of my country's economy, the discharge standards for sewage treatment are becoming increasingly stringent, and it is imminent to seek high-efficiency and low...

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Problems solved by technology

[0006] Aiming at the problems of low nitrogen and phosphorus removal efficiency and high energy consumption of the traditional process in the current sewage treatment process, the present invention combines two new nitrogen removal technologies of biological contact oxidation short-range nitrification and anaerobic ammonium oxidation with A P O combination, forming a three-sludge process for nitrogen and phosphorus removal, and introducing a real-time control system for real-time monitoring and timely regulation. refer to

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