Enhanced nitrogen and phosphor removing method using composite microbes to effectively process high concentration organic wastewater

A technology of compound microorganisms and organic wastewater, which is applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. It can solve the problems of large equipment, poor denitrification effect, and high investment, so as to improve the water output. indicators, reduced demand, and the effect of improved processing capacity

Active Publication Date: 2016-10-19
北京沃尔德斯水务科技有限公司
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AI Technical Summary

Problems solved by technology

[0015] In traditional nitrification and denitrification denitrification technology, nitrification and denitrification are still carried out in two independent or separated reactors with different DO concentrations, or in the same one that creates alternate anoxic and aerobic environments in time or space. It is carried out in a reactor, one process is divided into two systems, the condition control is complex, the two are difficult to unify in time and space, the denitrification effect is poor, the equipment is huge, and the investment is high

Method used

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  • Enhanced nitrogen and phosphor removing method using composite microbes to effectively process high concentration organic wastewater
  • Enhanced nitrogen and phosphor removing method using composite microbes to effectively process high concentration organic wastewater
  • Enhanced nitrogen and phosphor removing method using composite microbes to effectively process high concentration organic wastewater

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Effect test

example 1

[0033] A pig biogas digester discharges biogas slurry, and the concentration of COD and ammonia nitrogen in the wastewater is relatively high. The original process is A / O / A / O process, which is transformed by applying the biological treatment technology provided by the present invention, and the sludge concentration is controlled at 8.5g / l, the dissolved oxygen concentration is controlled at 0.3-0.5mg / L. The technological process after transformation is: composite microbial reaction tank + constructed wetland + water outlet. The system works well, and the operating cost is reduced by half compared with the original process. The water outlet indicators are shown in Table 1 below:

[0034] Table 1

[0035]

[0036] Before the transformation, in order to ensure that the dissolved oxygen in the anoxic pond was within the range of 0.1-0.5, due to the large difference in the concentration of the biogas slurry in the morning and evening, the operators of the pig farm manually adju...

example 2

[0038] Dyeing Wastewater

[0039] Printing and dyeing wastewater refers to the mixed wastewater produced by mixing the wastewater discharged from each process in the printing and dyeing process. Mainly include: desizing, scouring, bleaching, mercerizing wastewater discharged from the pretreatment stage (such as singeing, desizing, scouring, bleaching, mercerizing); dyeing wastewater discharged from the dyeing stage; printing wastewater and soaping discharged from the printing stage Wastewater; finishing wastewater discharged from the finishing stage. It has the characteristics of large water volume, high content of organic pollutants, high alkalinity, and large changes in water quality. Before the renovation of the project, the enterprise was worried about the problem of excessive sewage discharge every day; after the renovation, the quality of the effluent water was greatly improved, and the operating cost was reduced by 40%. The effluent indicators are shown in Table 2 bel...

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Abstract

The invention relates to an enhanced nitrogen and phosphorus removal method for compound microorganisms to efficiently treat high-concentration organic wastewater. The wastewater first enters the energy release area, and the water from the overflow weir in the energy release area is divided into two paths, one path enters the strict anaerobic area, and the other path enters the biological Selection area; in the biological selection area, the sludge returned from the strict anaerobic area and the influent are fully mixed, and then enter the complex microbial reaction area; in the complex microbial reaction area, short-range nitrification and denitrification, anaerobic ammonium oxidation, and the whole process Autotrophic denitrification, simultaneous nitrification and denitrification and other processes, so as to achieve the purpose of denitrification; the waste water enters the mud-water separation area after passing through the compound microbial reaction area, and the clear water separated in the mud-water separation area enters the phosphorus removal area for phosphorus removal, and finally makes the waste water reach Discharge standards or pre-treatment standards for reused water. This method is a new breakthrough to the original traditional sewage treatment process. In the environment of low dissolved oxygen, high sludge concentration and high removal rate make the energy consumption of wastewater treatment greatly reduced.

Description

technical field [0001] The invention relates to an enhanced denitrification and dephosphorization method for efficiently treating high-concentration organic wastewater by complex microorganisms. Background technique [0002] At present, the types and discharges of domestic sewage and industrial wastewater are increasing, and the composition is more complex, which contains many refractory organic substances, such as dyes, phenols, phenols, pesticides, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, nitroaromatic compounds, alkanes, etc. Base benzene sulfonic acid and humic acid etc. Most of these refractory organic substances are artificially synthesized organic substances, and most of them are toxic organic pollutants. Distortion, carcinogenesis) and toxicity, and some substances have endocrine disrupting effects. Compared with natural organic matter in water bodies, they are more harmful to human health. At the same time, synthetic compounds are often adsorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/30
Inventor 陆鹏王陆军王尧
Owner 北京沃尔德斯水务科技有限公司
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