Treatment method of xylose production wastewater

Abstract

The invention discloses a treatment method of xylose production wastewater. The treatment method comprises the following steps of: (1) filtering and absorbing the xylose production wastewater by using furnace slag, then adding the xylose production wastewater subjected to filtration and adsorption into an adjustment pool through mechanical grids, and subsequently adding the xylose production wastewater into a flocculation basin, and adding supernatant liquor into a hydrolysis acidification pool; (2) after the supernatant liquor enters into the hydrolysis acidification pool, finishing hydrolysis acidification; (3) after finishing the hydrolysis acidification, adding the supernatant liquor into a distribution well, then, feeding the supernatant liquor into an IC reactor, and feeding the supernatant liquor into an aerobic pool; (4) adding the wastewater into the aerobic pool; (5) after the wastewater is treated by the aerobic pool, adding the wastewater into a secondary sedimentation tank; (6) after the wastewater is treated by the secondary sedimentation tank, adding the wastewater into an advanced treatment tank; and (7) after the wastewater is treated by the advanced treatment tank, adding the wastewater into a final sedimentation tank, and adding the wastewater into an air floatation tank, so that the treated wastewater can reach 'first stage' standard In Integrated Wastewater Discharge Standard of the People's Republic of China (GB8978-1996) and can be discharged.

Description

technical field [0001] The invention relates to a treatment method for waste water from xylose production, and belongs to the technical field of waste water treatment. Background technique [0002] Xylose is an important chemical raw material and food additive, widely used in food, pesticide, textile, dyestuff and other industries. my country's xylose production uses corncobs, bagasse, etc. as raw materials, and is prepared through pretreatment, hydrolysis, decolorization, ion exchange, evaporation, crystallization, centrifugation, drying and other processes. The waste water produced in its production contains a large amount of pigment, Colloids, suspended solids and other organic substances, the wastewater is characterized by high COD value, high sulfate concentration, high chroma, high suspended solids, and strong acidity; high sulfate concentration will produce a large amount of hydrogen sulfide during anaerobic treatment Gas, which has a toxic effect on anaerobic activate...

AI Technical Summary

Problems solved by technology

When the traditional sewage treatment process is used for the treatment of wastewater from xylose production, the removal rate of each treatment process is very low, and the treated sewage cannot reach the "Second Class II" in the Comprehensive Wastewater Discharge Standard of the People's Republic of China (GB8978-1996). "standard

Traditional sludge dewatering machines include: plate and frame filter press, belt filter press, horizontal centrifuge, etc. Using traditional methods to dispose of sludge not only consumes a lot of power, but also requires a lot of labor

In addition, the biogas produced by traditional sewage treatment is directly discharged, which is not conducive to the construction of "beautiful China"

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