{"id":{"repo_id":"massey","oai_identifier":"oai:mro.massey.ac.nz:10179/12274"},"canonical_url":"https://search.dev.ndltd.org/etd/massey/oai:mro.massey.ac.nz:10179/12274","repository":{"repo_id":"massey","name":"Massey University","base_url":"https://mro.massey.ac.nz/server/oai/request"},"display":{"title":"Characterisation of aerobic biotreatment of meat plant effluent : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Environmental Engineering, Institute of Technology and Engineering, Massey University","abstract":"This study investigated the bio-kinetics of a meat-processing wastewater in an activated sludge system. The main pollutant loading of the wastewater under investigation was characterized as 1350 mgCOD/L, 70 mgNH4-N/L, and 127 mgTKN/L in average. Ihe respirometric method and aerobic batch methods were used to evaluate the biodegradability and the kinetics of carbon removal and nitrification of meat-processing wastewater in an activated sludge system. The readily biodegradable COD accounts for 15~17 % of the COD in meat-processing wastewater, while the inert portion, including soluble and particulate, accounts for another 10% of the COD. Approximately, 1/3 of the meat-processing wastewater composition is in soluble/fine colloidal form and the remaining 2/3 is in particulate form. For heterotrophos growing on soluble meat-processing wastewater, the determined values of kinetic constants for carbon removal were 0.63 mgcellCOD/mgCOD for the observed COD based yield coefficient (YH), 0.40 mgVSS/mgCOD for the observed mass (VSS) based yield coefficient (Y O), 1.4 for COD/VSS ratio, 3.3 day-1 for the maximum specific growth rate (μH MAX), and 10 mgCOD/L for the half-saturation constant (Ks). The death-regeneration decay coefficient of heterotrophos (bH) was 0.38 ~ 0.49 d-1. For heterotrophos growing on unfiltered meat-processing wastewater, the relationship between So/Xo and the observed corresponding specific growth rate (μ, d-1) was found to fit a Monod type function. The maximum specific growth rate of heterotrophos in unfiltered meat-processing wastewater was determined as 9 d-1, while the half-saturation constant was found to be 22. In regard of nitrification, the maximum specific growth rate of autotrophos in soluble meat-processing wastewater was 0.56 ~ 0.71 d-1.","abstract_html":"This study investigated the bio-kinetics of a meat-processing wastewater in an activated sludge system. The main pollutant loading of the wastewater under investigation was characterized as 1350 mgCOD/L, 70 mgNH4-N/L, and 127 mgTKN/L in average. Ihe respirometric method and aerobic batch methods were used to evaluate the biodegradability and the kinetics of carbon removal and nitrification of meat-processing wastewater in an activated sludge system. The readily biodegradable COD accounts for 15~17 % of the COD in meat-processing wastewater, while the inert portion, including soluble and particulate, accounts for another 10% of the COD. Approximately, 1/3 of the meat-processing wastewater composition is in soluble/fine colloidal form and the remaining 2/3 is in particulate form. For heterotrophos growing on soluble meat-processing wastewater, the determined values of kinetic constants for carbon removal were 0.63 mgcellCOD/mgCOD for the observed COD based yield coefficient (YH), 0.40 mgVSS/mgCOD for the observed mass (VSS) based yield coefficient (Y O), 1.4 for COD/VSS ratio, 3.3 day-1 for the maximum specific growth rate (μH MAX), and 10 mgCOD/L for the half-saturation constant (Ks). The death-regeneration decay coefficient of heterotrophos (bH) was 0.38 ~ 0.49 d-1. For heterotrophos growing on unfiltered meat-processing wastewater, the relationship between So/Xo and the observed corresponding specific growth rate (μ, d-1) was found to fit a Monod type function. The maximum specific growth rate of heterotrophos in unfiltered meat-processing wastewater was determined as 9 d-1, while the half-saturation constant was found to be 22. In regard of nitrification, the maximum specific growth rate of autotrophos in soluble meat-processing wastewater was 0.56 ~ 0.71 d-1.","abstract_has_math":false,"creators":["Chang, Sharon Shu-jen"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1999,"date_issued":"1999","date_published":"1999","updated_at":"2026-07-27T20:18:30Z","subjects":["New Zealand","Sewage","Purification -- Activated sludge process","Slaughtering and slaughter houses -- Waste disposal"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10179/12274"],"render_values":[{"text":"hdl:10179/12274","href":null,"code":true}]}]},"links":{"outbound_url":null,"outbound_label":null,"outbound_source":null},"metadata_groups":[{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["1999"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["New Zealand","Sewage","Purification -- Activated sludge process","Slaughtering and slaughter houses -- Waste disposal"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["hdl:10179/12274"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.other","label":"Dc Description Other","values":["This study investigated the bio-kinetics of a meat-processing wastewater in an activated sludge system. The main pollutant loading of the wastewater under investigation was characterized as 1350 mgCOD/L, 70 mgNH4-N/L, and 127 mgTKN/L in average. Ihe respirometric method and aerobic batch methods were used to evaluate the biodegradability and the kinetics of carbon removal and nitrification of meat-processing wastewater in an activated sludge system. The readily biodegradable COD accounts for 15~17 % of the COD in meat-processing wastewater, while the inert portion, including soluble and particulate, accounts for another 10% of the COD. Approximately, 1/3 of the meat-processing wastewater composition is in soluble/fine colloidal form and the remaining 2/3 is in particulate form. For heterotrophos growing on soluble meat-processing wastewater, the determined values of kinetic constants for carbon removal were 0.63 mgcellCOD/mgCOD for the observed COD based yield coefficient (YH), 0.40 mgVSS/mgCOD for the observed mass (VSS) based yield coefficient (Y O), 1.4 for COD/VSS ratio, 3.3 day-1 for the maximum specific growth rate (μH MAX), and 10 mgCOD/L for the half-saturation constant (Ks). The death-regeneration decay coefficient of heterotrophos (bH) was 0.38 ~ 0.49 d-1. For heterotrophos growing on unfiltered meat-processing wastewater, the relationship between So/Xo and the observed corresponding specific growth rate (μ, d-1) was found to fit a Monod type function. The maximum specific growth rate of heterotrophos in unfiltered meat-processing wastewater was determined as 9 d-1, while the half-saturation constant was found to be 22. In regard of nitrification, the maximum specific growth rate of autotrophos in soluble meat-processing wastewater was 0.56 ~ 0.71 d-1."]},{"key":"dc:title","label":"Title","values":["Characterisation of aerobic biotreatment of meat plant effluent : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Environmental Engineering, Institute of Technology and Engineering, Massey University"]}]}],"canonical_facts":{"dc:date.issued":["1999"],"dc:description.other":["This study investigated the bio-kinetics of a meat-processing wastewater in an activated sludge system. The main pollutant loading of the wastewater under investigation was characterized as 1350 mgCOD/L, 70 mgNH4-N/L, and 127 mgTKN/L in average. Ihe respirometric method and aerobic batch methods were used to evaluate the biodegradability and the kinetics of carbon removal and nitrification of meat-processing wastewater in an activated sludge system. The readily biodegradable COD accounts for 15~17 % of the COD in meat-processing wastewater, while the inert portion, including soluble and particulate, accounts for another 10% of the COD. Approximately, 1/3 of the meat-processing wastewater composition is in soluble/fine colloidal form and the remaining 2/3 is in particulate form. For heterotrophos growing on soluble meat-processing wastewater, the determined values of kinetic constants for carbon removal were 0.63 mgcellCOD/mgCOD for the observed COD based yield coefficient (YH), 0.40 mgVSS/mgCOD for the observed mass (VSS) based yield coefficient (Y O), 1.4 for COD/VSS ratio, 3.3 day-1 for the maximum specific growth rate (μH MAX), and 10 mgCOD/L for the half-saturation constant (Ks). The death-regeneration decay coefficient of heterotrophos (bH) was 0.38 ~ 0.49 d-1. For heterotrophos growing on unfiltered meat-processing wastewater, the relationship between So/Xo and the observed corresponding specific growth rate (μ, d-1) was found to fit a Monod type function. The maximum specific growth rate of heterotrophos in unfiltered meat-processing wastewater was determined as 9 d-1, while the half-saturation constant was found to be 22. In regard of nitrification, the maximum specific growth rate of autotrophos in soluble meat-processing wastewater was 0.56 ~ 0.71 d-1."],"dc:identifier":["hdl:10179/12274"],"dc:subject":["New Zealand","Sewage","Purification -- Activated sludge process","Slaughtering and slaughter houses -- Waste disposal"],"dc:title":["Characterisation of aerobic biotreatment of meat plant effluent : a thesis presented in partial fulfilment of the requirements for the degree of Master of Philosophy in Environmental Engineering, Institute of Technology and Engineering, Massey University"],"dc:type":["Thesis"]},"updated_at":"2026-07-27T20:18:30Z"}