Shek Wu Hui Pilot Sewage Treatment Plant, which when commissioned in 1973, will provide facilities for the comparison of the performance of three different methods of treating the raw sewage, viz, oxidation ponds, biological filtration and activated sludge systems.
6.65. The Hydrological Surveys of Victoria and Tolo Harbours, being undertaken in association with the Consulting Engineers, Messrs. J. D. & D. M. Watson, continued in accordance with the planned programme of investigations which extend over a total period of 16 months so that the effect of most types of weather and sea conditions can be studied. The aim of the investigations is to assess the effect of the disposal of sewage into these bodies of water and to recommend future action to maintain them in an acceptable condition.
6.66. Technical reports on the use of bubble barriers for abatement of beach pollution, the efficacy of Repulse Bay Imhoff Tank, and the proposed drainage improvements in Lei Yue Mun Village were prepared whilst a report on the design of septic tanks was under preparation.
6.67. Routine monitoring of the pollution level in various parts of the Colony waters and measuring of the sewage flow in the sewers were continued with a view to assessing performance of sewage screening plants, outfalls and the adequacy of the sewers.
6.68. The existing sewage laboratory was enlarged and improved to cope with the additional tests in connection with the hydrological surveys and other qualitative analysis of the sewage and receiving waters.
General
QUARRIES SECTION
Senior Engineer:
S. A. W. BOWMAN, B.Sc., C.Eng., M.I.C.E. (Acting)
6.69. In the course of the year, the Quarries Section was made directly responsible to the Principal Government Civil Engineer and also assumed responsibility for the Laboratory Section.
6.70. The Quarries Section produces aggregates and road making materials for use on Government projects, supervises contract quarrying, advises on quarrying matters generally and provides a materials testing service to both Government and the public.
68
Shek Wu Hui Pilot Sewage Treatment Plant, which when commissioned in 1973, will provide facilities for the comparison of the performance of three different methods of treating the raw sewage, viz, oxidation ponds, biological filtration and activated sludge systems.
6.65. The Hydrological Surveys of Victoria and Tolo Harbours, being undertaken in association with the Consulting Engineers, Messrs. J. D. & D. M. Watson, continued in accordance with the planned programme of investigations which extend over a total period of 16 months so that the effect of most types of weather and sea conditions can be studied. The aim of the investigations is to assess the effect of the disposal of sewage into these bodies of water and to recommend future action to maintain them in an acceptable condition.
6.66. Technical reports on the use of bubble barriers for abatement of beach pollution, the efficacy of Repulse Bay Imhoff Tank, and the proposed drainage improvements in Lei Yue Mun Village were prepared whilst a report on the design of septic tanks was under preparation.
6.67. Routine monitoring of the pollution level in various parts of the Colony waters and measuring of the sewage flow in the sewers were continued with a view to assessing performance of sewage screening plants, outfalls and the adequacy of the sewers.
6.68. The existing sewage laboratory was enlarged and improved to cope with the additional tests in connection with the hydrological surveys and other qualitative analysis of the sewage and receiving
waters.
General
QUARRIES SECTION
Senior Engineer:
S. A. W. BOWMAN, B.SC., C.Eng., M.I.C.E. (Acting)
6.69. In the course of the year, the Quarries Section was made directly responsible to the Principal Government Civil Engineer and also assumed responsibility for the Laboratory Section.
6.70. The Quarries Section produces aggregates and road making materials for use on Government projects, supervises contract quarrying, advises on quarrying matters generally and provides a materials testing service to both Government and the public.
68
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