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Method for treating riboflavin fermentation waste water

A technology for fermented wastewater and treatment methods, which is applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., and can solve the problem of sludge treatment capacity decline, odorous gas polluting the environment, and affecting sewage treatment and other problems, to achieve the effect of solving B/C value, saving water resources, and easy biodegradation

Active Publication Date: 2011-04-13
GUANGJI PHARMA MENGZHOU
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Problems solved by technology

This method has obvious disadvantages: due to the inoculation and fermentation of sewage without disinfection treatment, miscellaneous bacteria are introduced, and a large amount of malodorous gas is generated during the sedimentation process to pollute the environment; The capacity is greatly reduced, thereby affecting the treatment of sewage

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  • Method for treating riboflavin fermentation waste water

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Embodiment Construction

[0016] Raw wastewater quality index: PH value: 6.4, COD: 26970mg / L, BOD 5 : 21830mg / L, NH 3 -N: 3520mg / L, SS (suspended matter): 2787 mg / L.

[0017] Pour the original wastewater into a heavy sewage tank, add a certain amount of dilute sulfuric acid or hydrochloric acid under compressed air stirring, adjust the pH between 4.5 and 6.0, and send it to a multi-effect evaporator for concentration and drying after the water quality is uniform. The concentrated slurry is sent to the spray drying tower to be dried into protein feed particles (or into a drum dryer to be dried and crushed into protein feed powder). The condensed water condensed in the multi-effect evaporator enters the combined adjustment tank, adjusts and mixes with domestic sewage or other clean sewage, heats it at medium temperature (35-40°C), and enters the UASB pool. After treatment, the supernatant overflows The flow enters the A / O pond, and the generated biogas is recycled. The tail gas produced in the multi-effect...

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Abstract

The invention discloses a method for treating riboflavin fermentation waste water, which comprises the following steps of: concentrating and drying the waste water after extracting riboflavin fermentation liquor by using a multi-effect evaporation system; drying concentrated dense size to obtain a large amount of solid protein feed; and putting condensed condensate water in a multi-effect evaporator into a biochemical system, and treating the condensate water by adopting an 'anaerobic upflow anaerobic sludge blanket (UASB), anaerobic / oxic (A / O) and contact oxidization decoloration' method. The method changes the conventional sewage treatment mode, effectively separates solid matters in riboflavin production waste water, reduces the sewage treatment difficulty, and solves sewage biochemical oxygen demand / chemical oxygen demand (B / C) values, thereby ensuring that the sewage can be biochemically degraded more easily and the waste water can be discharged up to standard. Simultaneously, the solid protein feed is recovered, and the up-to-standard waste water is recycled for blending, fermentation water replenishing, extracting working section and / or greening and the like, thereby saving water resources. The biogas generated by anaerobic treatment is collected for comprehensive utilization, thereby saving energy sources and realizing comprehensive utilization of resources.

Description

Technical field [0001] The invention relates to a wastewater treatment method, in particular to a riboflavin fermentation wastewater treatment method. Background technique [0002] The treatment of high-concentration organic wastewater in the fermentation industry is an urgent problem to be solved in the field of environmental protection technology at home and abroad at this stage. Especially the production wastewater of the riboflavin fermentation industry is high-concentration organic wastewater, which has the characteristics of high chroma, high salinity, high COD, high BOD, and high bacterial content, and it is difficult to treat. Wastewater contains a lot of sugar, protein, SS and ammonia nitrogen. These substances are not toxic and harmful substances. They can be used by some microorganisms and animals in their growth and reproduction. Their arbitrary discharge not only wastes resources, but also causes serious environmental pollution. An applicable treatment technology is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14A23K1/00A23K10/10
CPCY02E50/343Y02E50/30
Inventor 何谧王专旭郭韶智吕文
Owner GUANGJI PHARMA MENGZHOU
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