First pipe section in place
evaporator was supplied by the same manufacturer and is heated by an electric immersion heater. thermo- statically controlled.
The rate of chlorine dosage is con- trolled by an operator after the re- quired dosage has been set. An automatic six-step control system ad- justs the amount of chlorine supply in steps of one sixth of the set dosage for each pump that is operating.
Raw chlorinated water is pumped to the flocculation basin at the treatment plant complex where it is dosed with
Trenching and pipelaying on Contract No. 1.
lime and alum. The flocculator, sup- plied by Dorr Oliver, is of the rivet- ted ribbon type with a gentle reciprocal motion from near the top to near the bottom of a channel con- taining chemical precipitate. The Wallace Tiernan lime feeding equip- ment has a slaking capacity of 1,000 lbh using a water: chemical ratio of 4:1. The two lime slakers are fed automatically by a BIF Omega 4 feeding mechanism of the totally en- closed type.
Four alum feeders were also sup-
BOLTON FOLDING DOORS
FOR EVERY PURPOSE
Bolton Gate Co. Ltd. are the largest door manufacturers in Great Britain. The doors range from large shutter doors, up to 200 ft. wide and 45 ft. high for industrial buildings, to small domestic room dividers.
Illustrated here are only a few of the many Bolton doors obtainable. Please write for comprehensive literature quoting reference FE 635.
BOLTON GATE CO. LTD., Bolton, LANCASHIRE, ENGLAND Agent: GUTHRIE & CO. (SINGAPORE) LTD.
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Seria
Singapore Jesselton Sandakan Kuching Sibu Brunei Town
GUTHRIE & CO. (MALAYA) LTD. Kuala Lumpur Petaling Jaya Penang Malacca · Ipoh, Seremban Kota Bharu Agents for Hong Kong and Macau: DEACON AND CO. LTD.,
Hong Kong Bank Building, H.K.
Superfold leathercloth covered room dividers are available in over 100 different patterns. Easily erected they are widely used for schools, hospitals and other institutions.
plied by Wallace Tiernan, with capacities ranging from 121⁄2 to 500 b. Mixing in the dissolver is by jets which supply the solution water and a motor driven mixer which has stainless steel shaft and impeller.
After treatment the water is pumped into the main distribution system by five treated water pumps with a combined capacity of 123,000 gal min.
The Dong Nai project. Saigon's first water treatment complex, was inaugurated in December, 1966.
We make every kind of lift door. The illustration shows fully glazed two-speed doors fitted to landings and a through car.
The latest addition to the Bolton range is this new BOLTON Berry overhead garage door. These doors offer highest value for money to meet this rapidly expanding market.
Bolton
Fireproof Shutter Doors are fully tested and approved by U.K. authorities; we also make solid hinged or sliding fireproof doors.
Far East Architect & Builder April, 1967
BG635
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