METHOD FOR SAMPLING WATER FOR MEASUREMENT OF LOAD QUANTITY OF WATER POLLUTION

摘要

PURPOSE:To sample discharged water automatically at the optionally set data and hour, by determining the data and hour of water sampling by a water sampling pump by using 1-2 week timer and 24hour timer and setting working time by using a short-time timer. CONSTITUTION:Discharged water flowing from an arrow mark A direction flows in a discharge tank 1 and is discharged out of the tank 1 by a discharge pump P and then, a water sampling pump 2 is set up at a lower position than a lowest water level L. At first, the data and hour of water sampling is set by a week-or two-week timer 6 and a 24hr timer 7 of a controller 4 and working time of the pump 2 is set by a short-time timer 3. further, the pump 2 is operated at the set data and hour and sampled water is stored in a storage receptacle 9 in a cooler 5 set a constant volume water at 5+ or -2 deg.C by a sampled water volume regulation valve 11 provided on a suction pipe 10 and an escape valve 13 provided on an escape pipe 12. Hereby, the variation of the water is decreased and the accurate result of measurement is obtained.