van Haandel, A. C. Handbook of biological wastewater treatment : design and optimisation of activated sludge systems / A. C. van Haandel and J. G. M. van der Lubbe. - 2nd ed. - London : IWA Pub., 2012. - xlvi, 770 p. : ill. ; 25 cm. ISBN: 9781780400006 RM720.71 Subjects--Topical Terms: Sewage--Purification--Biological treatment.Sewage--Purification--Activated sludge process.Waste disposal, Fluid. Index Terms--Genre/Form: Handbooks, manuals, etc.