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Study on the ABR-Biological Contact Oxidation Combined Process Synthetic Detergent Wastewater Treatment

Author: ShenSongMei
Tutor: ChenHuaGuo
School: Chang'an University
Course: Environmental Engineering
Keywords: Synthetic detergent LAS Biological contact oxidation ABR UV spectroscopy
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 235
Quote: 2
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Abstract


Synthetic detergent wastewater complex composition , its major pollutants of anionic surface active agent ( LAS ) , the type of wastewater with high COD content , biodegradability , foaming , toxicity and difficult process . Synthetic detergent wastewater ABR- biological contact oxidation Joint Process in fieldwork southerly daily chemical wastewater water quality and access to relevant information on the basis of this test . As the ABR reactor vaccination sludge test laboratory - cultured mature anaerobic granular sludge , sewage treatment plant Beishiqiao the end of the oxidation ditch aerobic sludge as inoculum sludge biological contact oxidation reactor , were studied ABR start and biological contact oxidation process and operating parameters are optimized , the final joint ABR- biological contact oxidation process synthetic detergent wastewater treatment . The test results show that supplemental nitrogen source should be of COD in the influent COD concentration of 1500mg / L LAS concentration of 150mg / L conditions : N = 60:1 ratio ; the best HRT test to determine joint process time 36h ABR for 24h, biological contact oxidation for 12h ; the ABR reactor temperature between 30-35 ℃ ; biological contact oxidation reactor DO between 4.0-5.0mg / L , biological nutrient dosage in 3- 5mg / L between. Under these conditions, effluent COD and LAS concentration of 100mg / L and 5mg / L , the effluent quality meets the national \Technical and economic analysis results showed that the synthetic detergent wastewater total cost of the treatment process is about 2.43 yuan / the m ~~ 3 to achieve the unity of the social, economic and environmental benefits , there are broad prospects for industrial application . Based on the experimental data , derived ABR reactor kinetic model for degradation : ( ? ) , Matrix (LAS) degradation model : ( ?) ; Biological contact oxidation degradation kinetics model : u = ( ? )

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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