...GA MEYKADEH; RL FITT; TJ BODDINGTON WATER WATER SUPPLY WORKS DISTRIBUTION RIVERS HYDROLOGY IRRIGATION DOMESTIC SAND PIPELINES REMOVAL CONDUITS RESERVOIRS CONSTRUCTION SYSTEMS PLANT DESIGN TREATMENT COAGULATION CHEMICAL MANUFACTURING STERILISATION COSTS OPERATION RAINFALL...

...GA MEYKADEH; RL FITT; TJ BODDINGTON © Thomas Telford and ICE 1958 TEHRAN WATER BOARD SIR ALEXANDER GIBB WATER WATER SUPPLY TREATMENT COAGULATION MANUFACTURE CHLORINE CHLORIDE GENERATION PUMPING PLANT SEDIMENTATION FILTRATION STERILISATION CHANNELS SLUDGE DISPOSAL...

... 10-gpc/cc of beta emitters. They treated that effluent by chemical precipitation and coagulation, which gave rise to active sludges. The level in thesludge varied, but averaged out at about 1.4X l O W pc/cc of alpha emittersand 6.0 X lO-Spc/cc of beta emitters-in other words, very much higher figures...

... in the layout of which particular attention has been paid to simplicity of control, the chemical wing, power housea,nd control gallerybeing grouped aroundthe central control area in which the instrument panel is situated. 47. Treatment follows the normal practiceof coagulation by sulphateof alumina...