Observations on ozone treatment of excess sludge
This work experimentally studied the effects of ozonation treatment on waste sludge. During the treatment process, various parameters characterizing sludge were investigated. A substantial reduction in the volume of sludge and the release of intracellular and extracellular materials were observed. W...
| Publié dans: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 56(2007), 9 vom: 04., Seite 167-75 |
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| Auteur principal: | |
| Autres auteurs: | , , , |
| Format: | Article |
| Langue: | English |
| Publié: |
2007
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| Accès à la collection: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Sujets: | Journal Article Carbohydrates Proteins Sewage Phosphorus 27YLU75U4W Ozone 66H7ZZK23N Nitrogen N762921K75 plus... |
| Résumé: | This work experimentally studied the effects of ozonation treatment on waste sludge. During the treatment process, various parameters characterizing sludge were investigated. A substantial reduction in the volume of sludge and the release of intracellular and extracellular materials were observed. With the increase of ozone dose, the settleability and water content of sludge improved obviously, but the filterability of sludge deteriorated drastically. In addition, the evolution of particle size was evaluated, which proved the breakup of sludge flocs and cells. There existed a threshold of ozone dose which was 0.04 gO(3)/gMLSS in this work. Above the threshold, the soluble chemical oxygen demand (SCOD), protein, carbohydrate, total nitrogen and total phosphorus in supernatant increased remarkably and the electron transport system (ETS) sludge activity decreased. Organic nitrogen and organic phosphorus occupied the main part of total nitrogen and total phosphorus in the supernatant |
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| Description: | Date Completed 17.03.2008 Date Revised 21.11.2013 published: Print ErratumIn: Water Sci Technol. 2008;57(4):637 Citation Status MEDLINE |
| ISSN: | 0273-1223 |