74936663.htm

GUINDY EXPERIMENTAL FILTERS.

APPENDIX VII, TABLE I.

Results of Chemical and Bacteriological Examination of samples of Adayar River water and of filtered water from two sand filters worked at a rate of 8 vertical inches per hour.

Date of examination of samples.	Raw water.							Filter with tiles.							Filter without tiles.							Remarks.
	Bacteriological.		Phy-sical.	Chemical.				Bacteriological.		phy-sical.	Chemical.				Bacteriological.		Phy- sical.	Chemical.
	Lactose fermenters preset in how many C.Cs?	Total colonies per C.C. on Agar at 37° C.	Colour and Trans-parency.	Parts per 100,000.				Lactose fermenters present in how many C.Cs.?	Total colonies per C.C on Agar at 37°C.	Colour and Trans-parency.	Parts per 100,000.				Lactose fermenters present in how many C.Cs.?	Total colonies per C.C on Agar at 37°C.	Colour and Trans-parency.	Parts per 100,000.
	Lactose fermenters preset in how many C.Cs?	Total colonies per C.C. on Agar at 37° C.	Colour and Trans-parency.	Total solids.	Free Ammo-nia.	Albuminoid Ammonia.	Absorbed Oxygen.	Lactose fermenters present in how many C.Cs.?	Total colonies per C.C on Agar at 37°C.	Colour and Trans-parency.	Total solids.	Free Ammo-nia.	Albuminoid Ammonia.	Absorbed Oxygen.	Lactose fermenters present in how many C.Cs.?	Total colonies per C.C on Agar at 37°C.	Colour and Trans-parency.	Total solids.	Free Ammo-nia.	Albuminoid Ammonia.	Absorbed Oxygen.
11th Aug. 1921.	0.01 C.C.	6,100	W.O.	30.00	0.004	0.034	0.214	0.1 C.C.	4,400	W.O.	21.00	0.002	0.026	0.093	0.1 C.C.	5,100	W.H.	21.00	0.002	0.022	0.093	Experiment No. 1.
12th " "	0.01 C.C.	4,800	W.O.	28.00	0.002	0.030	0.177	0.1 C C.	2.700	W.O.	22.00	0.002	0.016	0.112	0.1 C.C.	1,800	W.O.	22.00	0.002	0.016	0.112
13th " "	0.01 C.C.	5.100	W.O.	36.00	0.007	0.034	0.209	1 C.C.	1,500	W.H.	25 00	0.002	0.018	0.118	0.1 C C	2,700	W.O.	27.00	0.002	0.016	0.118
15th " "	0.01 C.C.	3,900	W.O.	35.00	0.002	0.034	0.182	5 C.C.	620	S.Y.C.	31.00	0.002	0.018	0.109	5 C.C.	700	S.Y.C.	32.00	0.002	0.018	0.129
19th " "	0.01 C.C.	4,800	W.O.	34.00	0.002	0.032	0.200	5 C.C.	800	S.Y C.	32.00	0.003	0.020	0.133	5 C.C.	1,000	S Y.C.	32.00	0.004	0.016	0.114
22nd " "	0.1 C.C.	5,600	W.O.	39.00	0.002	0.030	0.133	5 C.C.	1,100	S.Y.C.	34.00	0.002	0.014	0 086	5 C.C.	1,300	S.Y.C.	34.00	0.002	0.016	0.186
25th " "	0.1 C.C.	3.200	W.O.	36.00	0.002	0.032	0.173	5 C.C.	1,200	Y. C.	34.00	0.002	0.014	0.127	10 C. C.	900	Y.C.	34.00	0.003	0.016	0.127
29th " "	0.1 C.C.	3,600	W.O.	36.00	0.002	0.034	0.213	-60 C.C.	300	Y.C.	34.60	0.003	0.020	0.160	10 C.C.	460	Y.C.	35.40	0.002	0.018	0.160
1st Sep. "	0.1 C.C.	3,800	Y.O.	37.00	0.002	0.036	0.209	20.C.C.	400	Y.C.	35.00	0.002	0.018	0.165	10 C.C.	510	Y.C.	36.00	0 002	0.020	0.165
6th " "	0.1 C.C.	2,200	Y.O.	37.40	0.002	0.034	0.209	10 C.C.	190	S.Y.C.	35.00	0.002	0.018	0.104	10 C.C.	250	S.Y.C.	35.60	0.002	0.020	0.104
15th Oct. 1921.	0.01 C.C..	7,800	W.O.	31.00	0.006	0.026	0.190	0.1 C.C.	6,200	W.O.	24.00	Trace	0.014	0.095	0.1 C.C.	6.600	W.	23.00	0.002	0.016	0.095	Experiment No. 2.
17th " "	0.01 C.C.	6,000	W.O.	33.00	0.003	0.026	0.210	1 C.C.	4,800	W.H.	25.00	Trace	0.016	0.133	1 C.C.	5,200	W.H.	25.00	0.002	0.018	0.114
20th " "	0.1 C.C.	4,000	W.O.	37.00	0.002	0.022	0.191	20 C.C.	420	S.Y.C.	32.00	0.002	0.012	0.114	20 C.C.	740	S.Y.C.	32.40	0.002	0.014	0.124
21th " "	0.1 C C.	8,900	W.O.	35.00	0.003	0.024	0.210	20 C.C.	490	S.Y.C.	33.00	Trace	0.012	0.114	20 C.C.	750	S.Y.C.	34.00	0.002	0.014	0.105
22nd " "	0.1 C.C.	8,400	W.O.	37 00	0.005	0.026	0.190	20 C.C.	560	Y.C.	33.00	Trace	0.014	0.100	20 C.C.	690	Y.C.	33.00	0.002	0.012	0.090
25th " "	0.01 C.C.	7,900	W.O.	31.00	0.004	0.026	0.200	10 C.C.	710	Y.C.	27.00	0.002	0.014	0.114	20 C.C.	730	Y.C.	28.00	0.003	0.016	0.114
27th " "	0.01 C.C.	6,800	W.O.	27.00	0.002	0.026	0.210	5 C.C.	810	W.O.	21.00	0.002	0.014	0.14	5 C.C.	870	W.O.	21.30	0.002	0.014	0.105
1st Nov. "	0.01 C.C.	7,800	W.O.	22.00	0.003	0.024	0.190	5 C.C.	970	W.O.	18.00	Trace	0.012	0.095	5 C.C.	890	W.O.	18.60	0.002	0.014	0.095
2nd Sep. 1922.	0.01 C.C.	6,100	Y.O.	88.00	0.002	0.024	0.190	5 C.C.	780	W.O.	22.00	0.003	0.009	0.095	1 C.C.	1,300	W.O.	22.00	0.002	0.010	0.095	Experiment No. 3.
4th " "	0.01 C.C.	4,900	W.O.	29.00	0.003	0.026	0.229	5 C.C.	700	W.O.	22.00	0.002	0.013	0.133	5 C.C.	750	W.O.	21.60	0.002	0.015	0.133
7th " "	0.01 C.C.	6,400	S.Y.H	26.00	0.002	0.020	0.200	60 C.C.	580	S.Y.H.	23.00	0.003	0.011	0.140	10 C.C.	760	S.Y.H.	24.00	0.002	0.012	0.120
11th " "	0.01 C.C.	4,700	W.O.	23.00	0.003	0.028	0.171	10.C.C.	640	S.Y.H.	23.00	0.002	0.008	0.114	10 C.C.	720	S.Y H.	23.00	Trace.	0.009	0.133
14th " "	0.01 C.C.	5,400	Y.C.	27.00	0.003	0.030	0.229	-60 C.C.	540	Y.C.	25.40	0.002	0.018	0.113	20 C.C.	640	Y.C.	24.00	0.003	0.016	0.154
18th " "	0.01 C.C.	5,100	S.Y.O.	31.00	0.003	0.022	0.175	60 C.C.	690	Y.C.	22.00	0.002	0.010	0.127	20 C.C.	710	S.Y.H	22.40	0.002	0.016	0.137
22nd " "	0.1 C.C.	3,100	Y.H.	35.00	0.003	0.028	0.210	-60 C.C.	490	Y.C.	31.00	0.002	0.012	0.114	10 C. C.	820	Y.C.	30.00	0.002	0.014	0.124
25th " "	0.1 C.C.	2,900	S.Y.O.	42.00	0.003	0.036	0.283	60 C.C.	510	S.Y.C.	35.00	0.005	0.014	0.127	50 C.C.	630	S.Y.C.	34.40	0.002	0.016	0.127
28th " "	0.1 C.C.	4,200	Y.C.	38.00	0.004	0.034	0.257	-60 C.C.	470	S.Y.C.	35.00	0.003	0.014	0.162	20 C.C.	680	S.Y.C.	35.60	0.002	0.016	0.162
28th Oct. 1922.	0.01 C.C.	7.600	Y.O.	24.00	0.004	0.022	0.190	0.01 C.C.	5,100	W.O.	15.00	0.003	0.018	0.114	001 C.C.	5,400	W.O.	15.0	0.006	0.006	0.095	Experiment No. 4.
30th " "	0.01 C.C.	6,800	W.O.	21.00	0.003	0.020	0.080	0.1 C.C.	4,800	W.O.	17.00	0.002	0.016	0.016	0 1 C.C.	5,000	W.O.	17.00	0.002	0.020	0.060
2nd " "	0.01 C.C.	6,000	W.O.	28.00	0.003	0.030	0.127	1 C.C.	2,200	W.O.	17.00	0.010	0.008	0.117	1 C. C.	2.700	W.O.	18.00	0.002	0.018	0.107
6th " "	0.01 C.C.	5,800	W.O.	13.00	0.002	0.024	0.114	5 C.C.	1,200	W.O.	16.00	0.004	0.014	0.095	5 C.C.	1.400	W.O.	16.00	0.002	0.016	0.095
9th " "	0.1 C.C.	5,000	W.O.	19.00	0.002	0.020	0.180	10 C.C.	810	W.O.	16.00	0.003	0.010	0.060	10 C.C.	900	W.O.	16.40	0.002	0.018	0.100
13th " "	0.1 C.C.	4,800	W.O.	19.00	0.004	0.026	0.210	20 C.C.	640	W.O.	13.60	0.034	0.012	0.137	10 C.C.	800	W.O.	14.00	0.003	0.016	0.137
20th " "	0.1 C.C.	4,000	W.O.	18.00	0.003	0.026	0.120	60 C.C.	500	W.H.	13.00	0.002	0.014	0.180	20 C.C.	580	W.H.	14.00	0.002	0.020	0.080
27th " "	0.1 C.C.	4,600	W.O.	27.00	0.002	0.022	0.185	20 C.C.	480	W.H.	18.00	Trace	0.010	0.062	20 C.C.	500	W.H.	18.00	0.003	0.006	0.062

W.O. = White and Opaque. W.H. = White and hazy. S.Y.H.= Slightly yellowish and hazy. Y.O = Yellowish and Opaque. Y.C. = Yellowish but clear.

REPORT ON THE WORKING OF THE KING INSTITUTE, GUINDY