A kind of acrylic fiber wastewater treatment system

Abstract

The invention relates to an acrylic fiber waste water treatment system. The acrylic fiber waste water treatment system comprises a waste water regulating pond, an intensifying air floatation pool, an ozonation settling pool, a baffled anoxic and anaerobic reaction pool, an aerobiotic contact oxidation pool, a secondary sedimentation pool and a sand filter pool. The intensifying air floatation pool is provided with a sand collecting area, a sludge area, a mixing area and a separating area from bottom to top in sequence, wherein the separating area comprises a water collecting area and a slag collecting area located in the water collecting area. The ozonation settling pool comprises an aeration mixing area and a settling area. The baffled anoxic and anaerobic reaction pool comprises a facultative section, an anoxic section and an anaerobic section, all of which are formed through baffle plates in a separating mode. The aerobiotic contact oxidation pool is provided with a water inlet pipe, a water distribution quadrihedron, padding and an aeration adjusting and controlling system. The water flow and water quality of waste water are regulated by the regulating pool, and the waste water enters the intensifying air floatation pool so that dross can be removed; the waste water enters the ozonation settling pool, and pollutants are oxidized and decomposed; the waste water enters the baffled anoxic and anaerobic reaction pool and the aerobiotic contact oxidation pool to carry out an anoxic reaction, an anaerobic reaction and an aerobic reaction, and after being subjected to settling and filtering, the waste water reaches the standard and is drained.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an acrylic wastewater treatment system. Background technique [0002] Acrylic fiber wastewater mainly has the following characteristics: (1) Due to the many raw materials used in the production process of acrylic fiber, the process is complicated, and the production line is long, resulting in acrylic fiber wastewater with high COD and complex components, containing a large amount of aldehydes, cyanides, and phenols , nitriles, alkanes and other toxic and harmful substances; (2) Due to the addition of various additives in the production process, the biodegradability of wastewater is poor, and the B / C value is generally less than 0.25, which belongs to the industry that is difficult to completely degrade by biochemical methods Wastewater; (3) Since the acrylic fiber wastewater has the addition of nitrogen-containing organics such as acrylonitrile in the process of prod...

AI Technical Summary

Problems solved by technology

[0002] Acrylic fiber wastewater mainly has the following characteristics: (1) Due to the many raw materials used in the production process of acrylic fiber, the process is complicated, and the production line is long, resulting in acrylic fiber wastewater with high COD and complex components, containing a large amount of aldehydes, cyanides, and phenols , nitriles, alkanes and other toxic and harmful substances; (2) Due to the addition of various additives in the production process, the biodegradability of wastewater is poor, and the B / C value is generally less than 0.25, which belongs to the industry that is difficult to completely degrade by biochemical methods Wastewater; (3) Since the acrylic fiber wastewater has the addition of nitrogen-containing organics such as acrylonitrile in the process of production, a large amount of nitrogen-containing organics are contained in the acrylic fiber wastewater. After anaerobic and hydrolysis processes, some of the wastewater contains ammonium The macromolecular substances of root ions are hydrolyzed into small molecular substances, and the ammonia nitrogen value will increase, which will lead to the ammonia nitrogen concentration of the treated acrylic fiber wastewater not reaching the standard; After the biochemical system, microorganisms will be wrapped, which will affect the effect of biochemical treatment

[0003] Due to the above characteristics of acrylic wastewater, it is difficult to meet the requirements of high efficiency, energy saving, low cost and environmental protection by using traditional physical chemical and biochemical treatment processes to treat acrylic wastewater. Therefore, based on traditional physical chemical and biochemical treatment processes, improvements are made. Or the research and development of an innovative new combined process has become a hot spot in the research of acrylic wastewater treatment

Images