Device and method for treating high-concentration NO3-N wastewater or urban sewage by adopting improved DEAMOX continuous flow process

Abstract

The invention discloses a device and method for treating high-concentration NO3-N wastewater or urban sewage by adopting an improved DEAMOX continuous flow process. Short-process denitrifying granular sludge having good sedimentation performance and anaerobic ammonia oxidized granular sludge are put into a reactor, an oxygen-poor stirring strengthening substrate is added in the continuous flow reactor for mass transfer, and the problem of the poor denitrification effect caused by channeling and dead zone phenomena of a traditional continuous flow reactor is solved. Short-process denitrifying bacteria utilize organic matter and an external carbon source in urban sewage to convert NO3-N into NO2-N, then synchronous removal is performed through anaerobic ammonia oxidation reaction and NH4+-N in the urban sewage, and efficient removal of nitrogen is achieved by optimizing the flow of high-NO3-N-content wastewater, the urban sewage and the carbon source in inflow water. The device is high in nitrogen removal rate and nitrogen removal load, simple in structure and easy to optimize and control, the problem of difficult treatment of the high-NO3-N-content wastewater can be effectively solved, and the purpose of synchronous urban sewage treatment is achieved.

Description

technical field [0001] The invention relates to an improved DEAMOX continuous flow process for treating high-concentration NO 3 - -N waste water and urban sewage process technology, belonging to the technical field of sewage biological treatment. Background technique [0002] In industrial production, a large amount of high concentration NO is often produced 3 - -N wastewater, this type of wastewater must be strictly treated before it can be discharged, otherwise the nitrogen concentration in the water body will exceed the standard, causing eutrophication. The traditional physical and chemical treatment of this type of wastewater requires a large amount of chemicals and extremely high operating costs, and the use of complete denitrification biological treatment technology also requires a large amount of external carbon sources and produces a large amount of activated sludge. Increased operating costs of sewage treatment plants. [0003] In recent years, the anaerobic am...

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the present invention proposes an improved DEAMOX continuous flow process to process high-concentration NO 3 - -N wastewater and urban sewage device and method, specifically inoculate short-range denitrification granular sludge with good settling performance into the reactor, and use high NO 3 - -N wastewater and urban sewage acclimate and cultivate short-range denitrification granular sludge, and then inoculate highly active anammox granular sludge after stabilization. By optimizing the high NO in the influent 3 - -N waste water, urban sewage and carbon source flow, to achieve efficient removal of nitrogen, add anoxic stirring in the continuous flow reactor to enhance substrate mass transfer, solve the problem of channel flow and dead zone in the traditional continuous flow reactor, resulting in denitrification effect bad question

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