Comprising the initial phase of the City of Houston Northeast Water Purification Plant System, ...
Comprising the initial phase of the City of Houston Northeast Water Purification Plant System, BBI designed in three phases the Northeast Water Purification System for Houston Area Water Corporation and Montgomery Watson Harza Constructors. The technical work included design of:
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120 million gallon per day (mgd) intake structure
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570 linear feet of 78-inch raw water intake conduit
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initial 40 mgd raw water pumping station
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6,355 linear feet of 66-inch raw water pipeline
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approximately 30,500 linear feet of 84-inch steel finished water transmission main
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approximately 12,300 linear feet of 42-inch ductile-iron finished water transmission main.
The intake structure consists of an intake manifold comprised of four, dual-end 42-inch diameter screened openings which draw lake water into a 96-inch vertical intake pipe. The pumping station will be built in three phases: Phase I has a firm capacity of 40 mgd, Phase II has a firm capacity of 80 mgd, and Phase III has a firm capacity of 120 mgd. Both constant speed and variable speed pumps will be used. Phase I shall consist of three 20 mgd pumps. Two 20 mgd pumps will be added for Phase II. All five 20 mgd pumps will be replaced with 30 mgd pumps for Phase III. The pumps are single stage, vertical turbine pumps. The station design consists of a 108-inch buried suction header, five 54-inch individual pump feeds and five 60-inch diameter can pump barrels. The motors are housed in a CMU block building which contains a ten ton crane. The 66-inch raw water pipeline connects the raw water pumping station to the water purification plant. From the plant, design work includes installation of a 84-inch and 42-inch finished water transmission main including design of air release and drain line valves, butterfly valves, fittings, service connections, appurtenances, and utility relocations.
