Journal . trough, which, likethe distributing trough at the other end, is placed at rightangles to the fermentation troughs. The effluent passesout of the troughs through vertical perforated pipes, theperforations being of such a size that no BoUd matter canget through. The amount of suspended matter in thiseffluent is small, but, in the case of inland towns, it wouldhave to be further purified by the centrifuge processbefore final discharge. From the receiver-trough the separated sludge ispumped through a pipe (l-) into a patent distributor («) atthe top of the dryer. (Fis. 1.) This consists
Journal . trough, which, likethe distributing trough at the other end, is placed at rightangles to the fermentation troughs. The effluent passesout of the troughs through vertical perforated pipes, theperforations being of such a size that no BoUd matter canget through. The amount of suspended matter in thiseffluent is small, but, in the case of inland towns, it wouldhave to be further purified by the centrifuge processbefore final discharge. From the receiver-trough the separated sludge ispumped through a pipe (l-) into a patent distributor («) atthe top of the dryer. (Fis. 1.) This consists of avertical, cyUndrical tower fitted together in sections, andcontaining a number of horizontal perforated platforms(?. .0 which are alternately fixed and rotating upon acentral shaft (d). On the under-side of each rotating plat-form is a scraper (7i) which moves over the surface of thefixed platform below it, and acts as a rake to subdivide thesludge before it falls through the perforations (e). At the. same time hot air, at about 450° F., is admitted at thebottom (and only at the bottom, in the latest type of themachine), and passes upwards through the apparatus, Vol XXXIV., No. 10.] TRIPP—THE DICKSON CENTRIFUGE SYSTEM OF SEWAGE TREATMENT. 610 After cmnrging at fho top, it is further iitiliHed for tho tomiieratiii-p of tlie heater and of the fer-mentation troughs, and it finally pusses back into the com-bustion chamber of the furnace from nliicli it originally
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
