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<p>Automobile wash wastewater contains sand and dust, free oil, grease, oil/water emulsion, carbon, asphalt, salts and volatile organic compounds. A bubble column reactor was employed to treat the wastewater generated from automobile wash. The performance of the reactor was evaluated through various parameters, pH, electrical conductivity, turbidity, total suspended solids, chemical oxygen demand, biological oxygen demand and total petroleum hydrocarbonate. Returned activated sludge was used to provide the microbial seeding in the reactor. It was observed a 94% and a 98% reduction in chemical oxygen demand and total petroleum hydrocarbonate, respectively, within 5 days at 5&#xa0;L/min of air and 20&#xa0;L/min of liquid flow rates. Electrical conductivity, pH, total suspended solids reduced appreciably, but marginal change was observed in biological oxygen demand parameter.</p>

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Sustainable treatment technique for the reuse of wastewater generated from the automobile cleaning process

  • 期刊论文

  • 发表日期：

    2026年1月21日

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  • Feroz Shaik,
  • Nayeemuddin Mohammed,
  • Nageswara Rao Lakkimsetty

摘要

Automobile wash wastewater contains sand and dust, free oil, grease, oil/water emulsion, carbon, asphalt, salts and volatile organic compounds. A bubble column reactor was employed to treat the wastewater generated from automobile wash. The performance of the reactor was evaluated through various parameters, pH, electrical conductivity, turbidity, total suspended solids, chemical oxygen demand, biological oxygen demand and total petroleum hydrocarbonate. Returned activated sludge was used to provide the microbial seeding in the reactor. It was observed a 94% and a 98% reduction in chemical oxygen demand and total petroleum hydrocarbonate, respectively, within 5 days at 5 L/min of air and 20 L/min of liquid flow rates. Electrical conductivity, pH, total suspended solids reduced appreciably, but marginal change was observed in biological oxygen demand parameter.