Author: Clair N. SawyerPublisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 44
Book Description
Nitrification and Denitrification Facilities: Wastewater Treatment
Author: Clair N. SawyerPublisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 44
Book Description
Nitrification and Denitrification Facilities
Author: Nitrification and Denitrification Facilities
Author: Nitrification and Denitrification Facilities: Wastewater Treatment
Author: Clair N. SawyerPublisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 33
Book Description
Nitrification-denitrification of Wastewater Using a Single-sludge System
Author: Adrian G. SmithPublisher: Environment Canada : obtained from Training and Technology Transfer Division (Water), Environmental Protection Service, Fisheries and Environment Canada
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 88
Book Description
Full-scale nitrification-denitritication of wastewater was conducted at the Newmarket, Ontario, Water Pollution Control Plant (WPCP), where primary stage lime treatment for phosphorus removal was being applied. The object of this study was to see what degree of nitrification-denitrification could be maintained within a system with lime treatment. Experiments involved denitrification mixed liquor thickening, methanol dosing and supplementary iron salt addition for phosphorus removal. Constant high (above 200 ml/g) sludge volume index (SVI) was experienced in both the nitrification and combined nitrification denitrification units at Newmarket. This was thought to be caused by lime addition to the primary stage. Full nitrogen conversion and removal were disrupted by sludge chlorination for SVI control. Sorne limitations of the conventional facility were also found to affect nitrogen removal. Supplemental addition of ferrous sulphate, late in the program, to the aeration basin improved phosphorus removal and decreased SVI. Subsequent pilot plant studies were carried out at Brampton and Kleinburg. In these a split-return mode of operation was evaluated under more controlled conditions. The requirements for methanol as a carbon source, process solids distribution, and post-aeration were evaluated for nitrification-denitrification under liquid temperatures ranging from 10 ta 25°C. Denitrification solids thickening and thus improved nitrate removal was observed. Post-aeration proved necessary to maintain low effluent suspended solids, but did contribute dissolved oxygen to the denitrification tank contents.
Nitrification and Denitrification Facilities: Wastewater Treatment
Author: United States. Environmental Protection AgencyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Nitrification and Denitrification Facilities Wastewater Treatment
Author: Etats-Unis. Environmental Protection Agency. Office of Technology TransferPublisher:
ISBN:
Category :
Languages : en
Pages : 33
Book Description
Carbon, Nitrogen, and Phosphorus Removal in Staged Nitrification-denitrification Treatment
Author: James A. HaidmanPublisher:
ISBN:
Category : Nitrification
Languages : en
Pages : 52
Book Description
Joint Outfall System
Author: James F. StahlPublisher:
ISBN:
Category : Denitrification
Languages : en
Pages :
Book Description
Nitrification-denitrification of Wastewater Using a Single-sludge System
Author: A. G. SmithPublisher:
ISBN:
Category : Denitrifying bacteria
Languages : en
Pages : 88
Book Description
This report describes a full-scale evaluation of the split return mode for nitrification-denitrification of a combined domestic/ industrial wastewater. The investigation, which took place from July 1974 to December 1975 at the Ontario Ministry of the Environment's Ontario Experimental Facility at Brampton, followed pilot-studies at Kleinburg, Ontario. The evaluation investigated the effect of ferric chloride addition on phosphorous removal; the effect of solids retention times and sludge ages on nitrogen reactions at various temperatures; hydrogen peroxide addition and the use of a screen centrifuge on mixed liquor conditioning; as weIl as the suitability of the system for solids control and for maintenance of consistent nitrogen removal under different temperature conditions. It was concluded that the single-sludge, split-return system gave excellent nitrogen removal with minimal methanol application.