Water treatment

Claim 1

A METHOD OF REMOVING THE TURBUDITY OF RAW WATER WHICH COMPRISES ADDING AN INORGANIC FLOCCULATING AGENT THERETO, DIVIDING THE WATER INTO A MAIN STREAM AND A SAMPLING STREAM, AGITATING THE WATER IN SAID MAIN STREAM IN A FLOCCULATING VESSEL, ALLOWING THE FLOC IN SAID MAIN STREAM TO SETTLE IN A SETTLING BASIN, FILERING THE WATER COMING FROM SAID SETTLING BASIN, AND AUTOMICALLY ADJUSTING THE RATE OF ADDITION OF THE CLARIFYING CHEMICALS USED TO REMOVE THE TURBIDITY OF THE RAW WATER BY THE STEPS WHICH COMPRISE ADDING AN ORGANIC FILTER AID CHEMICAL TO SAID SAMPLING STREAM, SAID FILTER AID CHEMICAL BEING ADDED IN AN AMOUNT THAT IS INSUFFICIENT TO CAUSE COMPLETE CLARIFICATION OF THE WATER IN SAID SAMPLING STREAM, SAID ORGANIC FILTER AID CHEMICAL BEING ONE SELECTED FROM THE GROUP CONSISTING OF POLYSACCHARIDES, POLYACRYLAMIDES, ACRYLAMIDE POLYMER HYDROLYTES, CARBOXYMETHYLCELLULOSES, ALGINATES, CARRAGEENINS AND GUAR GUM, THEN IMMEDIATELY FILTERING THE SAMPLING STREAM THROUGH A FAST SAMPLING FILTER, MONITORING THE FILTRATE WITH A TURBIDTY SENSING DEVICE WHICH CONVERTS THE TURBIDITY SENSINGS INTO A VARIABLE ELECTRIC SIGNAL, AND CARRING THE SIGNAL TO A CONTROL DEVICE WHEREBY THE AMOUNT OF CLARIFYING CHEMICALS ARE ADDED IN PROPORTION TO THE TURBIDITY SENSINGS.