1
Applications of activated sludge models [E-Book] /
Subject (ZB): ...Sewage Purification Activated sludge process....

Full text 
2
Wastewater treatment plant design and operation modifications to improve management of biosolids : regrowth, odors, and sudden increase in indicator organisms [E-Book] /
3
Sludge : types, treatment processes and disposal [E-Book] /