[{"key":"dc.contributor.author","value":"Zhao, Hongmei","language":null},{"key":"dc.date.accessioned","value":"2009-07-29T21:46:03Z","language":null},{"key":"dc.date.available","value":"2009-07-29T21:46:03Z","language":null},{"key":"dc.date.issued","value":"2001","language":null},{"key":"dc.identifier.uri","value":"http:\/\/hdl.handle.net\/2429\/11470","language":null},{"key":"dc.description.abstract","value":"A laboratory sludge press was used to investigate the dewatering of various wastewater\r\ntreatment sludges generated in deinking mills and kraft pulp: mills. The effects of pressure\r\napplied to the sludge, pressing time and temperature were studied in terms of their effects on\r\nsludge cake solids consistency, filtrate flowrate and filtrate suspended solids (TSS). The effects\r\nof various combinations of primary and secondary sludge were tested. Secondary sludge alone\r\ncould not be dewatered in the press. Addition of primary sludge made pressing possible and\r\nincreasing the ratio of primary to secondary sludge improved performance. Sawdust and hog fuel\r\nwere shown to be effective filter aids. The use of single polymer flocculants was compared to\r\ndual polymer coagulant\/flocculant additions for various sludges. The use of a coagulant in a dual\r\npolymer system didn't improve dewatering compared to using a single polymer flocculant in\r\nterm of cake solids consistency and filtrate flowrate although it did reduce the total amount of\r\nflocculant necessary. But a dual polymer system did reduce filtrate TSS. FeCl\u2083 and an inorganic\r\npolymer polyaluminum chloride (PAC) could be used to replace organic coagulants. FeCl\u2083 is\r\ncheaper than organic coagulants, but PAC is more expensive. Measurement of sludge particle\r\ncharge was shown to be useful in detecting polymer overdosing. The laboratory sludge press was\r\nshown to be an effective tool for evaluating the use of polymeric conditioners in sludge\r\ndewatering. This press can distinguish the two mechanisms by which sludge dewatering occurs\r\nin practice, filtration and cake compression.","language":"en"},{"key":"dc.format.extent","value":"8903269 bytes","language":null},{"key":"dc.format.mimetype","value":"application\/pdf","language":null},{"key":"dc.language.iso","value":"eng","language":"en"},{"key":"dc.publisher","value":"University of British Columbia","language":null},{"key":"dc.rights","value":"For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https:\/\/open.library.ubc.ca\/terms_of_use.","language":null},{"key":"dc.title","value":"Deinking and kraft mill sludge dewatering using a laboratory sludge process","language":"en"},{"key":"dc.type","value":"Text","language":null},{"key":"dc.degree.name","value":"Master of Applied Science - MASc","language":"en"},{"key":"dc.degree.discipline","value":"Chemical and Biological Engineering","language":"en"},{"key":"dc.degree.grantor","value":"University of British Columbia","language":null},{"key":"dc.date.graduation","value":"2001-05","language":"en"},{"key":"dc.type.text","value":"Thesis\/Dissertation","language":"en"},{"key":"dc.description.affiliation","value":"Applied Science, Faculty of","language":null},{"key":"dc.description.affiliation","value":"Chemical and Biological Engineering, Department of","language":null},{"key":"dc.degree.campus","value":"UBCV","language":"en"},{"key":"dc.description.scholarlevel","value":"Graduate","language":"en"}]