EDITORIAL COMMITTEE Chairman: C.D. Parker Committee: G. R. Goffin M. Dureau F. R. Bishop L. C. Smith Joan Powling R. L. Clisby A. G. Longstaff B. S. Sanders W. Burnett W. Nicholson A. Macoun A. F. Herath Hon. Editor: A. H. Truman
Publisher: John G. Craig
IISSN0310 - 0367J
• alellSTEWATER
Official Journal of the
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!AUSTRALIAN WATER..ANQJ ASSOCIATION ]
Vol. 2 No. 1
Mar. 1975
CONTENTS
BRANCH CORRESPONDENTS CANBERRA, A.C .T.: A. Macoun, P.O . Box 306, Woden, 2606
NEW SOUTH WALES: M. Dureau, Envirotech Australia Pty.Ltd., 1 Frederick Street, Artarmon. VICTORIA : A. G. Longstaff, Gutteridge Haskins & Davey, 380 Lonsdale Street, Melbourne, 3000. QUEENSLAND: L. C. Smith, 24 Byambee Street, Kenmore, 4069. SOUTH AUSTRALIA: R. L. Clisby, c /- E. & W. S. G.P.O. Box 1751 , Adelaide, 5001. WESTERN AUSTRALIA: B. S. Sanders, 39 Kalinda Drive, City Beach, 6015.
Editorial- Clean Air ......................................................................................................
7
Association News ..............................................................................................................
8
The Mutual Destruction of polluting Factors in Waste Liquors-W.M. Drew & W.R.B. Martin ...................... ..
9
Heat Treatment of Sewage Sludges - R.B. Brooks .....
15
Desiderata: Desired Engineering Excellence Dr. Clair Sawyer .................................................................................................................... ..
19
Valley Design in Urban Growth CentresAlan S. Bonham .......................................................................................................................
21
Report on AWWA Summer School.. ........................................................ ..
24
New Products & Projects ..........................................................................'. ............ ..
26
Conference Calendar .................................................................................................... .
28
TASMANIA: W. Nicholson, 7 Swansea Court, Lindisfarne, 7015. NORTHERN TERRITORY: A. F. Herath, 59 Allwright St., Casuarlna, 5792. Editorial Correspondence: Hon. Editor, A. H. Truman, c/ - Davy-Ashmore Pty. Ltd., P.O. Box 4709, Melbourne, 3001. Or to State Correspondents.
Advertising Enquiries: John Craig, 'Water' P.O. Box 100, Caulfield East , 3145 Phone : 211 7978 - 874 2133
COVER STORY 2500mm diameter Rocla reinforced concrete pipes being laid for the South-Eastern Outfal l, Melbourne . The 33 km pipeline is Australia 's largest precast concrete pipeline and will convey purified effluent from the Board of Works' treatment plant at Carrum to Bass Strait. The pipes were made in mainly 5m lengths at a special manufacturing complex in Melbourn.e where special machines and handling gear were installed to handle the pipes weighing up to 14.5 tonnes each. Pipes were made by the Rocla roller suspension process and design inc luded the innovative use of shear reinforcement .
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