74936666.htm

GUINDY EXPERIMENTAL FILTERS,

APPENDIX VII, TABLE II.

Results of Chemical and Bacteriological Examination of samples of Adyar River water and of filtered water from two sand filters worked at rates of 12 and 16 inches vertical per hour.

Date of examina- tion 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 present in how many C.Cs.?	Total Colonies per C.C. on Agar at 37ºC.	Colour and Trans- parency.	Parts per 100,000.				Lactose fermenters present in how many C.Cs.?	Total Colonies per C.C. on Agar at 37ºC.	Colour and Trans- parency.	Parts per 100,000.				Lactose fermenters present in how many C.Cs.?	Total Colonies per C.C. on Agar at 37ºC.	Colour and Trans- parency.	Parts per 100,000.
	Lactose fermenters present in how many C.Cs.?	Total Colonies per C.C. on Agar at 37ºC.	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 37ºC.	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 37ºC.	Colour and Trans- parency.	Total Solids.	Free Ammo- nia.	Alduminoid Ammonia.	Absorbed Oxygan.
(12 inches vertical per hour.)
26th Dec. 1921.	0.1 C.C.	4,700	Y. H.	46.00	0.003	0.036	0.100	1 C C.	2,900	Y.C.	44.00	Trace.	0.020	0.070	1 C.C.	3,000	Y. C.	44.00	0.002	0.019	0.070	Experiment No. 5.
27th "	0.1 C.C.	3,803	Y. H.	45.00	0.002	0.037	0.200	1 C.C	680	S. Y.C.	44.00	0.002	0.017	0.136	5 C.C.	490	S.Y.C.	44.00	0.002	0.018	0.136
30th "	0.1 C.C.	2,700	Y. H.	42.00	0.002	0.029	0.149	20 C.C.	480	S.Y.C.	41.00	0.002	0.019	0.102	20 C.C.	520	S.Y.C.	40.00	0.002	0.018	0.102
4th Jan. 1922.	0.1 C.C.	2,500	Y. O.	45.00	0.002	0.031	0.219	60 C.C.	390	S.Y.C.	44.00	Trace.	0.016	0.143	20 C.C.	610	S.Y.C	44.00	0.002	0.019	0.162
7th "	0.1 C.C.	4,800	Y. O.	49.00	0.002	0.031	0.229	60 C.C.	420	S.Y.C.	46.00	Do.	0.017	0.152	20 C.C.	80	S.Y.C.	48.00	Trace.	0.020	0.171
11th "	0.1 C.C.	3,900	W. O.	44.00	0.003	0.036	0.190	20 C.C.	510	S.Y.C.	41.40	0.003	0.018	0.143	20 C.C.	40	S.Y.C.	42.00	0.003	0.019	0.133
5th Dec. 1922.	0.1 C.C.	9,800	W. O.	26.80	0.003	0.016	0.168	5 C.C.	2,600	W. O.	19.00	0.002	0.008	0.116	5 C.C.	2,800	W. O.	21.00	Trace.	0.012	0.126	Experiment No. 6.
7th "	0.1 C.C.	8,400	W. O.	28.00	0.004	0.018	0.174	5 C.C.	1,900	W. H.	20.00	Trace.	0 006	0.123	5 C.C.	2,400	W.H.	20.60	Do.	0.004	0.123
11th "	0.1 C.C.	4,700	W. O.	34.00	0.002	0.022	0.270	5 C.C.	1,700	W. H.	24.00	Do.	0.004	0.080	5 C.C.	2,100	W.H.	24.00	0.002	0.003	0.00
14th "	0.1 C.C.	5.400	W. O.	34.00	0.002	0.022	0.120	20 C.C.	270	S.Y.C.	28.00	Do.	0.004	0.060	60 C.C.	120	S.Y C.	28.00	Trace.	0.004	0.060
18th "	0.01 C.C.	6,700	W. O.	37.00	0.002	0.020	0.205	60 C.C.	130	S.Y.C.	33.00	Do.	0.004	0.089	60 C.C.	180	Y. C.	33.00	0.002	0.003	0.078
21st Apr. 1923.	0.1 C.C.	3,700	Y. C.	44.00	0.002	0.034	0.224	5 C.C.	610	S.Y.C.	43.00	0.004	0.018	0.166	. . .	. . .	. . .	. . .	. . .	. . .	. . .	Experiment No. 7.
24th "	0.1 C.C.	3,700	Y. C.	43.00	0.002	0.036	0.242	5 C.C.	590	Y.C.	41.40	0.004	0.024	0.167	. . .	. . .	. . .	. . .	. . .	. . .	. . .
27th "	0.1 C.C.	2,100	Y. H.	45.00	0.002	0.036	0.260	20 C.C.	610	Y.C.	43.00	0.007	0.022	0.195	. . .	. . .	. . .	. . .	. . .	. . .	. . .
1st May 1223.	0.1 C.C.	1,800	Y. H.	46.00	0.005	0.038	0.248	60 C.C.	630	Y.C.	45.40	0.009	0.026	0.205	. . .	. . .	. . .	. . .	. . .	. . .	. . .
4th "	0.1 C.C.	4,200	Y. H.	41.00	0.003	0.030	0.174	20 C.C.	720	S. Y .C.	40.00	0.002	0.017	0.113	. . .	. . .	. . .	. . .	. . .	. . .	. . .
7th "	0.1 C.C.	4,100	W. O.	44.00	0.003	0.030	0.190	5 C.C.	860	S.Y.C.	42.00	0.002	0.016	0.114	. . .	. . .	. . .	. . .	. . .	. . .	. . .
12th May 1923.	0.1 C.C.	3,800	S.Y.H.	42.00	Trace.	0.030	0.231	20 C.C.	260	Y.C.	42.00	0.002	0.016	0. 189	. . .	. . .	. . .	. . .	. . .	. . .	. . .	Experi-ment No. 8.
17th "	0.01 C.C.	3,410	S.Y.O.	45.00	0.003	0.032	0.253	60 C.C.	250	S.Y.C.	44.00	0.002	0.016	0.169	. . .	. . .	. . .	. . .	. . .	. . .	. . .
22nd "	0.01 C.C.	3,120	Y. O.	46.00	0.002	0.040	0.308	20 C.C.	320	S.Y.C.	44.00	Trace.	0.022	0.153	. . .	. . .	. . .	. . .	. . .	. . .	. . .
26th "	0.01 C.C.	3,060	Y. O.	45.00	Trace.	0.032	0.287	20 C.C.	340	Y.C.	44.00	0.002	0.022	0.205	. . .	. . .	. . .	. . .	. . .	. . .	. . .
(16 inches vertical per hour.)
19th Jan. 1922.	0.01 C.C.	3,900	W.O.	42.00	0.002	0.031	0.171	1 C.C.	2,100	S.Y.C.	41.00	0.002	0.016	0.133	1 C.C.	2,300	S.Y.C.	42.00	0.002	0.019	0.143	Experiment No. 9.
23rd "	0.01 C.C.	3,100	Y. H.	44.00	Trace.	0.030	0.152	60 C.C.	470	S.Y.C.	41.00	0.002	0.013	0.105	-20 C.C.	520	S.Y.C.	42.00	Trace.	0.012	0.095
26th "	0.1 C.C.	3,000	Y. H.	44.00	0.002	0.028	0.171	60 C.C.	440	S.Y.C.	43.00	0.002	0.013	0.124	-20 C.C.	510	S.Y.C	43.60	0.002	0.015	0.124
30th "	0.1 C.C.	2,700	Y. H.	46.00	0.002	0.027	0.127	-60 C.C.	410	Y.C.	43.00	0.002	0.013	0.098	-60 C.C.	400	Y. C	43.60	0.002	0.016	0.098
2nd Feb. 1922.	0.1 C.C.	2,620	Y. H.	45.00	0.003	0.031	0.127	-60 C.C.	380	Y.C.	43.00	0.003	0.015	0.078	-60 C C.	490	Y. C.	43.00	0.004	0.015	0.068
6th "	0.1 C.C.	3,910	Y. C.	43.00	Trace.	0.027	0.124	-60 C.C.	360	S.Y.C.	42.00	6.002	0.015	0.86	-60 C.C.	390	S Y C.	43.00	0.003	0.017	0.95
10th Feb. 1922.	0.1 C.C.	4,200	Y. C.	43.00	0 002	0.029	0.160	1 C.C.	2,800	S.Y.C.	42.00	Trace.	0.019	0.120	1 C.C.	2,700	S. Y.C.	42.60	0.002	0.017	0.120	Experiment No. 10.
13th "	0.1 C.C.	3,800	Y. H.	42.00	0.002	0.029	0.164	5 C.C.	870	S.Y.C.	42.00	Do.	0.017	0.092	5 C.C.	900	S.Y.C.	42.00	0.002	0.015	0.103
16th "	0.1 C.C.	2,900	Y. H.	42.60	0.002	0.036	0.147	10 C.C.	490	S.Y.C.	41.00	Do.	0.013	0 074	10 C.C.	510	S.Y.C.	43.00	0.005	0.019	0.084
20th "	0.01 C.C.	3,100	Y. C.	41.00	0 002	0.031	0.171	20 C.C.	400	S.Y.C.	40.00	0.003	0.013	0.105	20 C.C.	440	S.Y.C.	40.00	0.004	0.018	0.114
23rd "	0.1 C.C.	2,800	Y. H.	41.0	0.004	0.027	0.146	60 C.C.	410	S.Y.C.	40.00	0.003	0.015	0 117	60 C.C.	450	S.Y.C.	40.00	0.006	0 020	0.117

REPORT ON THE WORKING OF THE KING INSTITUTE, GUINDY