The Effect of Ozone Oxidation Treatments of Pulp Bleaching Wastewater Containing Refractory Organic Substances.
スポンサーリンク
概要
- 論文の詳細を見る
Pulp bleaching wastewater (PBW) was treated with ozone to evaluate the effects of ozone treatment on the dissolved organic carbon (DOC) and the molecular size distribution. It was found that the DOC in PBW was decreased substantially by ozone oxidation. It was also found that the substantial part of DOC cannot be removed by using UV irradiation or UV/H<SUB>2</SUB>O<SUB>2</SUB> as a pretreatment step. The macromolecules were degraded to smaller fragments during ozone treatment, and 92.3% of macromolecules (M.W.3, 000-10, 000) was found to be converted to smaller fragments or mineralized during ozone treatment. In addition, the rate of DOC removal separately by biological treatment of fluidized aerobic reactor or by ozone treatment, was 30%. Removal rate by biological treatment after ozone treatment was increased up to 47%. Consequently, in total, 76% of DOC was removed. An obvious explanation for this is that monomol ecularization of polymolecular is carried out by ozone oxidation, and bio-degradation of DOC is promoted due to the increase of smaller fragment ratio.
- 日本水処理生物学会の論文
日本水処理生物学会 | 論文
- Development of a Boat Equipped with UV Lamps for Suppression of Freshwater Red Tide in a Reservoir
- 微生物活性助剤を添加した生物処理反応槽に出現する微小動物相の特徴
- 硝化促進型SBRプロセスにおける処理特性と汚泥沈降性に及ぼす撹拌の影響
- 高効率コンポスト化のための切り返しの役割
- 非イオン界面活性剤によるBst DNAポリメラーゼの阻害抑制とクリプトスポリジウムDNA検出への応用