Investigation of pre-treatment influence to excess sludge digestion process

Blonskaja, V., Vaalu, T. Investigation of pre-treatment influence to excess sludge digestion process // "Environmental Impact and Water Management in a Catchment Area Perspective" : 24-26 September, 2001, Tallinn, Estonia : proceedings of the Symposium dedicated to the 40th Anniversary of Institute of Environmental Engineering at Tallinn Technical University. Tallinn : Tallinn Technical University, 2001. p. 223-231 : ill.