凝集沈澱・限外ろ過・活性炭処理による洗車排水再利用システム

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タイトル別名
  • Reuse System for Car Wash Water by Flocculation, Ultrafiltration and Activated Carbon Treatments
  • セイヒン ギジュツ ギョウシュウ チンデン ゲンガイ ロカ カッセイタン ショリ ニ ヨル センシャ ハイスイ サイリヨウ システム

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Reuse system for car wash water by flocculation, cellulose acetate (CA) ultrafiltration membrane and activated carbon treatments was developed. Multi-blended flocculating agent containing bentonite, Al2 (SO4) 3, sodium alginic acid and cationic polyacrylamide showed higher removals of COD and turbidity for waste car wash water compared with inorganic flocculating agent such as Al2 (SO4) 3 or polymeric flocculating agent individually. Practical scale experiment with membrane area of 48 m2 were conducted under the membrane pressure of 20 kPa. When waste car wash water was treated by this multi-blended flocculating agent of 50 mg/l, permeation flux through the CA membrane showed 1.0 m3/ (m2· day) for more than 6 months. The BOD, COD and extract by n-hexane values of reuse water were 2.5 to 14.0 mg/l, 3.7 to 15.7 mg/l and below 0.5 mg/l, respectively.

収録刊行物

  • 膜 29 (1), 73-76, 2004

    日本膜学会

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