晴天日に住宅地域から排出された生活廃水中のＬＡＳの動態

• 辻 幸志

  山梨大学大学院医学工学総合研究部

• 藤田 昌史

  山梨大学大学院医学工学総合研究部

• 金 元載

  東京大学大学院工学系研究科

• 真名垣 聡

  東京大学大学院工学系研究科

• 中島 典之

  東京大学環境安全研究センター

• 古米 弘明

  東京大学大学院工学系研究科

書誌事項

タイトル別名

• Diurnal Behavior of LAS in Domestic Wastewater from Residential District on Fine-Weather Day
• セイテンビ ニ ジュウタク チイキ カラ ハイシュツサレタ セイカツ ハイスイチュウ ノ LAS ノ ドウタイ

抄録

To investigate the diurnal behavior of linear alkylbenzene sulphonates (LAS) in domestic wastewater from a residential district on a fine-weather day, wastewater was collected for 24 hours from an upper part of a combined sewer. Dissolved LAS (D-LAS) concentration and loading began to increase from early morning and reached the highest values at 9:00. Then, they gradually decreased until noon. Multi-dimensional scaling (MDS) analysis using total LAS (T-LAS) composition showed that around the peak time wastewater was largely derived from laundry. On the other hand, there were significant shifts in D-LAS concentration and loading as well as T-LAS composition on the MDS map from 12:00 to 0:00. Therefore, LAS discharge showed a marked diurnal change. In the above investigation, the LAS adsorbed onto SS (A-LAS) and the D-LAS that is commonly analyzed were assayed. As a consequence, the former occupied larger fraction than the latter. Additionally, A-LAS composition differed from D-LAS composition, because C₁₃-LAS was predominant in A-LAS, whereas C₁₁-LAS was dominated in D-LAS. From the results, it was found that using the T-LAS obtained by analyzing A-LAS as well as D-LAS was desirable, for example, to assess the environmental pollution risk caused by combined sewer overflow. Moreover, the amount of LAS discharged from household per person per day was estimated at 1.2 g · p.e^-1 · day^-1 by taking notice of T-LAS.

収録刊行物

• 水環境学会誌

  水環境学会誌 30 (10), 579-583, 2007

  公益社団法人 日本水環境学会

キーワード

• adsorption
• domestic wastewater
• fine-weather day
• LAS
• multi-dimensional scaling
• SS

詳細情報

• CRID: 1390282680057196544
• NII論文ID: 10019836057
• NII書誌ID: AN10372439
• DOI: 10.2965/jswe.30.579
• COI: 1:CAS:528:DC%2BD2sXhtlaqur3F
• ISSN: 18813690
• ISSN: 09168958
• NDL書誌ID: 8971334
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8971334
• Web Site: https://www.jstage.jst.go.jp/article/jswe/30/10/30_10_579/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可