WEDNESDAY, MAY 11, 1977
5
SOLID WASTE DISPOSAL SYSTEM
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THE PUBLIC WORKS DEPARTMENT IS ABOUT TO EMBARK ON THE SECOND STAGE OF A SOLID WASTE DISPOSAL SYSTEM DESIGNED TO DEAL WITH THE MOUNTAIN OF REFUSE GENERATED BY THE RAPID GROWTH OF HONG KONG.
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TENDERS ARE BEING CALLED FOR THE SUPPLY ERECTION AND COMMISSIONING OF A HIGH DENSITY SOLID WASTE BALING PLANT AT SAI TSO WAN, EAST KOWLOON.
THIS PLANT, THE FIRST ONE IN HONG KONG, WILL BALE 600 TONNES OF REFUSE A DAY.
THE CHIEF ENGINEER OF THE P.W.D.'S CIVIL ENGINEERING CONSULTANTS MANAGEMENT DIVISION, MR. WONG KWOK-CHOY, TODAY DESCRIBED +HIGH DENSITY BALING AS A PROCESS WHEREBY REFUSE IS COMPACTED IN A HYDRAULIC PRESS INTO BALES ABOUT ONE AND A HALF CUBIC METRES IN VOLUME, EACH WEIGHING ABOUT ONE AND A HALF TONNES,+
+THEY ARE VERY SUITABLE FOR TRANSPORT BY LAND OR SEA TO CONTROLLED TIPPING SITES.+
+ANOTHER ADVANTAGE IS THAT THE SOLID WASTE IS REDUCED TO ABOUT ONE-FOURTH ITS ORIGINAL VOLUME, WHICH MAKES TRANSPORT THAT MUCH EASIER, MR. WONG SAID.
EARLIER THIS YEAR THE P.W.D. LET A $21.25 MILLION CONTRACT IN CONNECTION WITH HONG KONG'S FIRST PULVERISING AND COMPOSTING PLANT AT CHAI WAN.
THE COMPOSTING PROCESS INVOLVES THE TREATMENT OF SOL ID WASTE THROUGH GRADUAL DECOMPOSITION INTO HYGIENICALLY SAFE,
INERT AND INOFFENSIVE MATERIAL.
THIS METHOD OF WASTE DISPOSAL DOES NOT PRODUCE ANY ATMOSPHERIC POLLUTION AND THE COMPOSTED WASTES MAY BE USED AS INTERMEDIATE AND FINAL COVER MATERIAL IN CONTROLLED TIPPING OPERATIONS.
NEARLY $52 MILLION HAS BEEN EARMARKED FOR THE CONSTRUCTION OF THE TWO PLANTS. BOTH THE COMPOSTING AND THE BALING PLANTS SHOULD BE IN OPERATION IN THE LATTER HALF OF NEXT YEAR.
AT PRESENT SOME 4,000 TONNES OF REFUSE ARE COLLECTED IN HONG KONG EACH DAY. AND THIS IS LIKELY TO RISE TO ABOUT 7,500 TONNES BY 1985.
MR, WONG SAID, TOGETHER WITH EXISTING FACILITIES, NEW PLANTS WHICH INCLUDE A NEW INCINERATOR AT KWAI CHUNG, AND ANOTHER COMPOSTING PLANT AT SHA TIN WILL ENABLE US TO DEAL EFFECTIVELY WITH HONG KONG'S REFUSE UNTIL WELL
INTO THE EIGHTIES.+
THE NEW
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