Method and device for backflow strengthened treatment of high-ammonia-nitrogen waste water
An enhanced treatment, high ammonia nitrogen technology, applied in chemical instruments and methods, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problem of restricting denitrification capacity, reducing denitrification efficiency, and different bacterial species To avoid the accumulation of poisoning and toxins, ensure the denitrification efficiency and improve the denitrification ability
Inactive Publication Date: 2017-01-25
BEIJING UNIV OF CHEM TECH
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Problems solved by technology
Traditional biological denitrification is mainly nitrification and nitrosation, but due to the different strains and living environments of the two, the two cannot be carried out at the same time
Ordinary nitrosation-ANAMMOX process will gradually accumulate toxins as the reaction progresses, restricting the denitrification ability and reducing the denitrification efficiency
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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] Such as figure 1 As shown, the structure schematic diagram of the device for reflux enhanced treatment of high ammonia nitrogen wastewater of the present invention is provided, which consists of SBR reactor 3, UASB reactor 8, water inlet pipe 2, aeration pipe 4, water outlet pipe 5, water distributor 7 , reflux pipe 13, reflux pump 12, dosing pump 14, dosing box 15 and detector 6, the shown SBR reactor 3 and UASB reactor 8 are cylindrical shapes with upper ends open, and SBR is Sequencing Batch Reactor Activated The abbreviation of Sludge Process means sequential batch activated sludge process, which is an activated sludge sewage treatment technology operated by intermittent aeration. UASB is the abbreviation of Up-flow Anaerobic Sludge Bed / Blanket, which means an upflow anaerobic sludge bed reactor, which is an anaerobic biological method for t...
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The invention relates to a device for backflow strengthened treatment of high-ammonia-nitrogen waste water. The device comprises a water inlet pipe, a SBR reactor, a UASB reactor and an aerator pipe, and is characterized in that the upper part of the UASB reactor is communicated with the SBR reactor by a backflow pipe so as to enable poisonous and alkaline effluent produced by anaerobic ammonia oxidation to flow back to the SBR reactor; a dosing pump and a detector are arranged on a water outlet pipe, and the dosage added by the dosing pump to the water outlet pipe is controlled according to the detection result. A waste water treatment method disclosed by the invention comprises the following steps: a) intermittent aeration reaction; b) anaerobic reaction; c) reaction liquor backflow; and d) dosing regulation. According to the treatment device and method for high-ammonia-nitrogen waste water, effluent produced during anaerobic ammonia oxidation flows back into a nitrosification reactor so as to supplement alkalinity required by nitrozation, and chemicals are added in the backflow process so as to remove toxin produced during anaerobic ammonia oxidation, thus reducing the influence of toxin on anaerobic ammonia oxygen bacterium, and improving the nitrogen removing efficiency and capability of bacterium.
Description
technical field [0001] The present invention relates to a method and device for reflux intensified treatment of high-ammonia-nitrogen wastewater, and more specifically, to a method and device for refluxing alkaline and toxic liquids produced by anaerobic ammonium oxidation to realize the supplementation and utilization of nitrosation lye The invention discloses a method and a device for strengthening the treatment of high ammonia nitrogen wastewater by returning the drug to remove toxicity. Background technique [0002] With the development of economy, environmental pollution is becoming more and more serious. Nitrogen pollution is one of the main causes of water pollution. The forms of nitrogen in nature mainly include ammonia nitrogen (NH3, NH4+-N), nitrogen (N2), nitrite nitrogen (NO2--N), nitrate nitrogen ( NO3--N) and organic nitrogen. Among them, ammonia nitrogen is the main removal target. Scientists are committed to finding efficient and stable methods for removin...
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IPC IPC(8): C02F3/30C02F101/16
CPCC02F3/30C02F2101/16
Inventor 戚伟康孙韶华侯嫒瑛尹利君杨晓进
Owner BEIJING UNIV OF CHEM TECH