Public works . SPRINKLING FILTER UNDER ; SHOWING COLLECTING DRAINS, DISTRIBUTING MAINS I.\ AND DIS-TRIBUTING PIPES RESTING ON BOTTOM READY TO BE SET; POSTS FOR SUPPORTING SPRINKLER SPEXJIALS. FILTER STONE IN TL,ACE AT THE LEFT. 320 MUNICIPAL JOURNAL AND PUBLIC WORKS Vol. XLVII, No. 22. HEAVY SCUM I^f GAS tbe end of the foaming period. handled by the two or three employes at the plant. Inspite of the increased velocity of flow of the sewagethrough the tanks there has been no trouble with thesprinkling filters. The nozzles practically never stop up,and there
Public works . SPRINKLING FILTER UNDER ; SHOWING COLLECTING DRAINS, DISTRIBUTING MAINS I.\ AND DIS-TRIBUTING PIPES RESTING ON BOTTOM READY TO BE SET; POSTS FOR SUPPORTING SPRINKLER SPEXJIALS. FILTER STONE IN TL,ACE AT THE LEFT. 320 MUNICIPAL JOURNAL AND PUBLIC WORKS Vol. XLVII, No. 22. HEAVY SCUM I^f GAS tbe end of the foaming period. handled by the two or three employes at the plant. Inspite of the increased velocity of flow of the sewagethrough the tanks there has been no trouble with thesprinkling filters. The nozzles practically never stop up,and there is very little pooling on the surface of the filt-ers, what little there is being easily remedied by forkingover the stone on the surface. As stated above, the efflu-ent has continued to remain stable, as indicated by themethylene blue test. The contract for the fine screen was let in the springof 1918, and the screen placed in operation about a yearago. This screen is of the R. W. type, ten feet in diam-eter and set at 15 degrees with the horizontal. Theorifices are slots one-sixteenth of an inch wide. Thereare no slots in the hat or projecting part of the screen,which is of solid plates. The bristle larushes brush thescreenings into and through a trough, from which theydrop into a box about two fee
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmunicip, bookyear1896
