

@mastersthesis {6301,
	title = {Intensification of anaerobic lagoons for abattoir wastewater treatment and biogas recovery},
	year = {2000},
	note = {0802152},
	school = {University of New South Wales (Australia)},
	type = {phdPh.{D}.},
	address = {Ann Arbor},
	abstract = {The Australian red meat industry faces major environmental issues from its production and disposal of large volumes of wastewater high in organics, nutrients, fats and suspended solids. The industry is facing a difficult period with increases in tax, trade waste and water charges, as well as community pressure to reduce odours resulting from inefficient water treatment systems. The aim of this research was to improve the utility of anaerobic lagoons for intensive rural industries, particularly abattoirs, and develop a treatment technology which was capable of treating the wastes to the required regulatory standards while being cost effective for the industry. A 50 litres, two-stage, novel intensified anaerobic lagoon system (IALS), with a high rate (HR) fixed film zone and a low rate (LR) polishing zone within a covered anaerobic lagoon was developed and tested at bench-scale for wastewater carbon removal and biogas recovery. Steady state and dynamic experiments, using actual wastewater from a sheep abattoir (COD range: 3,100-11,700 mg.L -1 ), aided in the development of the preferred operational conditions for the IALS. The results of the trials identified that the IALS with a 20\% enhanced activity/HR zone volume had COD removal efficiencies in excess of 90\% even with an overall organic loading rate of 2.5 kgCOD.m -3 .d-1 . The total suspended solids were reduced by 95\% in the final effluent and methane yields of up to 0.29 L.kg-1 COD removed, indicated effective degradation. Up to 80\% of the overall COD removal and biogas production occurred in the HR zone, implying scope for only partial lagoon coverage and the potential for carbon and nutrient removal within the two stage IALS. Estimated capital cost for installing an IALS for a sheep abattoir was only 1.8\% of the cost of installing an Upflow Anaerobic Sludge Blanket Reactor. The experimental work and economic analysis demonstrated that the IALS concept combined the advantages of high rate mesophilic and low rate lagoon systems, thus successfully maximising performance while being economically favourable over other available anaerobic systems especially when biogas was utilised as a fuel in the abattoir.},
	keywords = {0543:Civil engineering, 0775:Environmental engineering, Abattoir wastewater, anaerobic lagoons, Applied sciences, Biogas recovery, Civil engineering, Environmental engineering, Wastewater treatment},
	url = {http://search.proquest.com/docview/304662983?accountid=14270},
	author = {Faruqi, Mehreen Saeed}
}
