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Degradation-resistant ammonia-nitrogen wastewater treatment system and method

An ammonia nitrogen wastewater and a treatment system technology, which is applied in the field of treatment systems for refractory ammonia nitrogen wastewater, can solve the problems that total nitrogen cannot be completely removed, high energy consumption, and ammonia nitrogen cannot be completely removed, so as to improve operation efficiency and resist impact risks. The effect of coefficients

Inactive Publication Date: 2017-05-31
INST OF PROCESS ENG CHINESE ACAD OF SCI
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Problems solved by technology

Although this method solves the problem of treatment cost to a certain extent, in the actual operation process, about 50% of the ammonia nitrogen is still converted into nitrate nitrogen first, and the energy consumption is still high; stage can not be completely removed, and the pre-denitrification biological denitrification process is adopted in the subsequent unit, which cannot completely remove the total nitrogen

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  • Degradation-resistant ammonia-nitrogen wastewater treatment system and method
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  • Degradation-resistant ammonia-nitrogen wastewater treatment system and method

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Embodiment 1

[0062] figure 2 A specific embodiment of the treatment system for refractory ammonia nitrogen wastewater is given, including a system consisting of a regulating tank, a biological aerobic decarbonization reactor, a CANON reactor, an aerobic nitrification reactor, and an anaerobic denitrification reactor; wherein Phosphorus salts are added to the adjustment tank to adjust the nutrient composition of wastewater, inorganic carbon sources are added to the aerobic nitrification reactor to adjust the pH value in the reactor, and organic carbon sources are speculated in the anoxic denitrification reactor as the electron supply for the denitrification reaction. body.

[0063] Taking biological denitrification of coking wastewater containing high concentrations of organic matter (mainly volatile phenols, benzene series, nitrogen-containing heterocyclic compounds, COD 3000-8000mg / L) and ammonia nitrogen (less than 500mg / L) as an example, adopt figure 2 The treatment system for the gi...

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Abstract

The invention relates to a degradation-resistant ammonia-nitrogen wastewater treatment system. The system comprises a biological aerobic decarburization unit, an anaerobic ammonium oxidation unit and a nitrification-denitrification unit and the above units are orderly connected. The method is suitable for treatment on degradation-resistant high-concentration ammonia-nitrogen wastewater such as coking wastewater, coal gasification wastewater, pharmaceutical wastewater, fermentation wastewater and food enterprise wastewater and can also be used for municipal wastewater and domestic sewage treatment. Through the system, the total nitrogen content of the treated degradation-resistant ammonia-nitrogen wastewater is controlled to 15 mg / L or less so that the national first-level emission standard is satisfied.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a treatment system and a treatment method for refractory ammonia nitrogen waste water. Background technique [0002] At the same time, industrial wastewater containing high concentrations of organic pollutants and ammonia nitrogen is difficult and costly to treat, and it is a difficulty and hot spot in the field of wastewater treatment. At present, traditional A / O and its derivatives are commonly used in this kind of sewage biological treatment, including O / A / O, A 2 / O or A / O 2 And other biological denitrification treatment technology, this technology can remove most of the refractory organic matter and ammonia nitrogen, but it is difficult to discharge COD in the effluent and theoretically about 30-40% of the total nitrogen is discharged into the water body in the form of nitrate nitrogen. Various local or industry standards issued by some cities and countries ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/30
Inventor 李海波曹宏斌李玉平盛宇星
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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