79 pages matching cost in this book
Results 1-3 of 79
What people are saying - Write a review
We haven't found any reviews in the usual places.
Annual Conference 1958 at SouthportFinal Session 27th June
The Public Works and Municipal Services Congress
17 other sections not shown
acid activated sludge activated sludge plant active carbon aeration tank algae aluminium chlorohydrate ammonia application authors average bacteria beds biological Branch capacity carbon channel chemical concentration cost Dalmarnock denitrification detergent digestion dilution discharge disposal dissolved oxygen domestic sewage drainage effect efficiency engines estuary experiments factors filtration final effluent flocculation floe gallons gas liquor Hogsmill humus tanks increased installed Institute Johannesburg liquid load method Mogden nitrate nitrification nitrogen obtained operation organic outfall oxidation ponds oxygen demand paper perchloric acid percolating filters period phenols pipe possible present produced pump recirculation reduced removed River Board samples sedimentation tanks septic tank settled sewage settlement settling tanks sewage effluent sewage purification sewage treatment sewer Simplex sludge digestion surface suspended solids Table tank effluent temperature thiocyanate tion tracer trade effluent treated unit valve volume Water Pollution Water Pollution Research weir