Premium
Design of Sewage‐Treatment Plants in Brisbane, Australia
Author(s) -
LEVER M. L.
Publication year - 1991
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1991.tb00588.x
Subject(s) - effluent , sewage treatment , aeration , sewage , activated sludge , environmental engineering , environmental science , population , stormwater , waste management , engineering , ecology , surface runoff , biology , demography , sociology
Brisbane City Council provides sewage‐treatment facilities for a population of 800 000, together with industrial effluents having an organic loading equivalent to a further 600 000 people. Three projects are described to illustrate some of the different designs and operating parameters used in Brisbane, where the sewage temperatures range from 18°C to 29°C and stormwater is collected separately. The first project is a 400 000 population equivalent augmentation to a conventional activated‐sludge plant located at Luggage Point. The two other plants have to comply, inter alia , with an effluent standard of 10 mg/l for total nitrogen. This requirement, together with site constraints and an economic evaluation of alternatives, resulted in the selection of the extended‐aeration process incorporating anoxic zones and separate mixing and aeration. These contemporary designs are specific to Brisbane conditions, and are intended to facilitate reliable operation as well as being cost effective.