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Sewage Disposal Works: Their Design and Construction

Chapter 21: S. H. JOHNSON & Co., Ltd.
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About This Book

The text provides detailed, illustrated guidance on the design and construction of sewage disposal works, surveying screening devices, storm-water overflows, detritus and settling tanks, sludge removal and treatment methods, percolating and contact filters, sand filters, measuring apparatus, and effluent sterilization. It emphasizes practical diagrams and adaptable design suggestions rather than site-specific drawings, compares capacities and operational considerations, and describes construction details, distribution mechanisms, and appliances used in operation and maintenance, aiming to serve as a reference for planning, building, and operating disposal schemes.

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S. H. JOHNSON & Co., Ltd.

SLUDGE PRESSING
MACHINERY

SLUDGE FILTER PRESSES
WITH PATENT PYRAMID DRAINAGE SURFACES,
& RATCHET CAPSTAN TIGHTENING GEAR, ALSO
PATENT HAND HYDRAULIC CLOSING GEAR,
& PATENT HYDRAULIC OPENING GEAR.

SLUDGE FORCING RAMS
ORDINARY OR AUTOMATIC SYSTEM. OUR TWIN
PRINCIPLE SAVES 50% AIR CONSUMPTION.

AIR COMPRESSORS
SINGLE, OR TWO STAGE, HORIZONTAL STEAM
AND BELT DRIVEN OR FOR ATTACHMENT TO
OIL OR GAS ENGINES. VERTICAL HIGH SPEED
FOR ELECTRIC DRIVE.

PRESS CAKE DISINTEGRATORS

PNEUMATIC LIME MIXERS ETC.

ENGINEERING WORKS:
CARPENTERS ROAD, STRATFORD
LONDON, E.

Telegrams: “FILTRUM, LONDON.” Telephone: EAST 363