Treatment process method for wastewater from abscisic acid production

Abstract

The invention relates to a treatment process method for wastewater from abscisic acid production. In the method provided by the invention, a high-concentration acidic extraction wastewater toxicity removing method and a multistage counter flow load control biological method are combined, a UASB (upflow anaerobic sludge blanket) anaerobic treatment section and a concentration gradient water distribution section are added, and three-grade sludge return three-stage clean water (treated water) is adopted to recycle and treat mixed wastewater which is generated during abscisic acid production, has high concentration (CODcr>100,000 mg / L) and high impact load, and contains refractory large molecules according to the pollution concentration change (pollutant load gradient and change). The treatment process method is high in impact load resisting capability and can be used for solving the difficulty in the treatment of ultrahigh-concentration wastewater from biological fermentation in China; and the wastewater effluent can reach the first-class standard of GB8978-1996.

Description

technical field [0001] The present invention relates to industrial wastewater treatment method, specifically the wastewater treatment process produced in the production process of abscisic acid (S-abscisic acid), which is suitable for the treatment of mixed wastewater produced in the production process of bioengineering fermentation enterprises; especially It is used for the treatment of ultra-high concentration (CODcr ≥ 100,000 mg / L) organic wastewater. Background technique [0002] [S-Abscisic Acid]: scientific name Abscisic Acid, English name Abscisic Acid (abbreviated as ABA). S-Abensin is a Chinese common name named by the National Pesticide Standardization Technical Committee. CA Registration Number: 21293-29-8. [0003] International (ISO) common name: (+)-cis, trans-Abscisic acid. [0004] Chemical name (IUPAC): 5-(1'-Hydroxy-2',6',6'-trimethyl-4'-oxo-2'-cyclohexen-1'-yl)-3-methyl -2-cis-4-trans-pentadienoic acid. [0005] [empirical formula]: C 15 h 20 o 4 R...

AI Technical Summary

Problems solved by technology

The content of CODcr and ammonia nitrogen in the mixed wastewater is extremely high, especially in the extraction wastewater. The concentration of CODcr is between 100,000 and 150,000 mg / l, the concentration of ammonia nitrogen is between 500 and 2,500 mg / l, and pH=0.4 to 2. It belongs to the difficult-to-treat high-concentration acidic extraction wastewater. Before the study of the present invention, there have been no reports of successful effective systematic treatment engineering cases for this type of wastewater.

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