PROFESSOR'S SUPPORT NO NEED FOR APPREHENSION "The apprehension of the Auckland and Suburban Drainage League is understandable, but entirely without technical foundation, with the possible exception of contamination to edible shellfish close to Brown's Island. However, this is a matter which can be settled readily, and in any event is under control, because at any subsequent time, if contamination occurs, an improvement in the methods of treatment will bring about the desired result."
This opinion was , expressed by Professor D. J. Leech, of the School of Engineering, Auckland University College, in a report upon the proposals for the disposal of Auckland's sewage, which came before the University College. Council yesterday afternoon. After discussion the council decided to take no action which could be regarded as supporting the Auckland Drainage League and to supply copies of the report to the league and to the Auckland Metropolitan Drainage Board. "Scheme is Sound" Professor Leech said the chairman and secretary of the league had discussed their objections to the Brown's Island scheme. Consideration had been given to schemes for the utilisation of the products of sewage for agriculture, since the desirability of this had been stressed by members of the league. "The proposal to give sewage partial treatment at Brown's Island, to discharge the effluent into Motukorea Channel and the disposal of sludge at sea is basically sound technically and economically; and is in conformity with modern practice abroad under conditions similar to those pertaining to Auckland," he said.
"It must not be forgotten, however, that the Brown's Island scheme has the merit of extreme flexibility in regard to treatment. If at any subsequent time the partial treatment proposed is inadequate, an extension becomes a simple matter. After discussing suggestions for the utilisation of sewage for manure, Professor Leech said that the large number of recorded cases of infection through the consumption of vegetables grown with the aid of broad irrigation and the -general abandonment of these methods abroad compelled him to recommend that no' further attention should be given to the use of sewage for agricultural purposes. In his opinion the principles of the sewage problem had been investigated adequately and any further inquiry would be redundant. Because of the admittedly bad conditions at Orakei it would seem that an early implementation of the project was desirable. Opinion of Members "I feel very gratified at this report by Professor Leech," said the Hon. B. Martin, who added that he thought something should be done quickly to remedy the present unsatisfactory system. Mr. C. R. Ford questioned whether a report obtained for the council's own information should be made available to other bodies. Mr. G. M. Fowlds: A good deal of publicity has been given against .the Brown's Bay scheme, which I consider is quite sound, and I think the fullest publicity should be given to Professor Leech's report. Professor A. G. Davis said that as a private citizen he had been in favour of the league's activities because of the success in England of the manurial use of sewage. However, he was now prepared to accept the opinion that, under conditions prevailing in New Zealand, this use was not practicable. On the motion of the president, Mr. W. H. Cocker, the council decided to take no action.
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SEWAGE SCHEME, Auckland Star, Volume LXXVI, Issue 167, 17 July 1945
SEWAGE SCHEME Auckland Star, Volume LXXVI, Issue 167, 17 July 1945
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