. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 44 BULLETIN 57, U. S. DEPARTMENT OF AGEICULTUEE. Tlio disposal system should be divided into at least two divisions fur intermittent application, and the capacity of the system should be 10 to 15 per cent larger than for a double-chamber tank system. The smgie-chamber septic tank system requires considerable at- tention, since there is no provision for automatic discharge. Fig- ures taken from the work of the Wisconsin Agricultural Experiment Station show that in the long run there is little difference in the cost of t
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 44 BULLETIN 57, U. S. DEPARTMENT OF AGEICULTUEE. Tlio disposal system should be divided into at least two divisions fur intermittent application, and the capacity of the system should be 10 to 15 per cent larger than for a double-chamber tank system. The smgie-chamber septic tank system requires considerable at- tention, since there is no provision for automatic discharge. Fig- ures taken from the work of the Wisconsin Agricultural Experiment Station show that in the long run there is little difference in the cost of the single and double chamber tank system.^ C/./-7ANHOL£ OV LCTEL GROUND ass TH/S c:t-:=nX=i:=t:^ TOP VI£VY. Fig. 36.—Single-chamber septic tank for six people. THE GREASE TRAP. The grease trap acts as a separator of the grease and sewage from the kitchen sink or dairy room. If grease is allowed to enter the sewer it accumulates and eventually clogs the system. Figure 38 shows a grease trap.^ Two large, glazed sewer tiles are placed in the ground. The inlet is usually a 2-inch iron pipe. The outlet must be so arranged that the mouth of it is at all times below the surface of the sewage. The grease, being lighter, naturally floats upon the water, and is thus prevented from entermg the out- let. The outlet is made of 4-inch glazed sewer tile and is connected with the sewer inlet of the septic tank. A concrete cover is pro^dded, and grease and dirt which may accumulate are removed when necessary. ' Wisconsin Sta. Circ. Inform. 34. \ —, :;'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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