ON THE TREATMENT AN© UTILIZATION OF SEWAGE. 175 



Eemarlcs oh Remits, of Oaugings, — ^The whole of tHe g'augings taken from 

 the 12th of June 1870 to the ISth of July 1871 (a period of 399 days) havQ 

 heen calculated and tabulated, with the following results : — 



Toivn Seivage. — The sewage received on the farm from the town of Rom- 

 ford during the aboye period has been _ ...■'■■'„ ■; v - ; :. ". A 



85,999,445 gallons = 383,'926 tons, 



and the number of days on which it has been delivered is 373, giving an 

 average quantity of 



230,562 gallons^ 1029 tons per day. 



This quantity does not, however, represent the total discharge from the 

 town of Romford, because, from the middle of Ifovember 1870 to the middle 

 of April 1871, the day-sewage only was delivered on to the farm, the night- 

 sewage being allowed to run on to the meadows at Wybridge between the 

 farm and the town ; and for sixteen days in February and March the whole 

 of the sewage was so disposed of, and there are no means of estimating the 

 quantity during this period. _ - 



Ilespective flow of Day- and Night-setvage. — Since the 15th of April last, 

 the new tanks being completed, and the sewage, with a few exceptions, being 

 received continuously on the farm, it has been possible to calculate the re-, 

 spective flow of sewage during the working hours of the day and during the 

 remaining period, and the following are the figures : — 



gallons. tons. 



Day-sewage (average time 10 hours) ... . 139,153 = 621| 

 Night-sewage (average time 14 hours) . . 143,645 = 641 5 



Total 282,798 = 1262^ 



The day-sewage is calculated on the basis of gaugings in the sewer during 

 the working hours of the day ; the night-sewage is obtained by calculating 

 the difference of quantities in the tanks between the times of stopping the 

 pump one day and starting the next, allowing for the effluent water entering 

 the tanks in the meantime. 



By equalizing the time of day- and night-sewage (12 hours each) and 

 computing the quantities on the basis of the above figures, the following is 

 the result : — 



gallons. tons. 



Day-sewage, 12 hours 163,329 = 729 



Night-sewage, 12 hours 119,469 = 533| 



282,798 = 1262| 



According to these latter figures the night-sewage would be to the day as 

 79 to 100, or the day to the night as 137 to 100. 



It should be borne in mind that the night-sewagQ of Romford fluctuates 

 very much, owing to the Brewery frequently sending down a large quantity 

 of water after working hours ; this is especially the case on Saturday nights, 

 as a reference to the detailed records will show. 



Diluted Sewage pu-niped. — The diluted sewage pumped includes, as was 

 explained in the last Report, a certain amount of effluent water, which flows 

 into the tanks, and is there mixed "with the sewage as it comes from the town. 

 The engine has \yorkcd 366 days duiing the above period ; the average time 



