Environmental Engineering FOURTH EDITION

264 ENVIRONMENTAL ENGINEERING Figure 13-1. The sanitary landfill. Impermeable liner Figure 13-2. Arrangement of cells in an area ...

Solid Waste Disposal 265 6fi Average cell depth 8fi 10 it -n 3- .- 0 200 500 750 1000 o“0 Tons of refuse per day Figure 13-3. Da ...

266 ENVIRONMENTALENGINEEIUNG leachate produced by the decomposing refuse, and the venting or use of the landiill gas. Full plans ...

Solid Waste Disposal 267 ’hble 13-2. Percolation in Three Landfillsa Precipitation, Runoff Evapotranspiration, Percolation, Loca ...

268 ENVIRONMENTAL ENGINEERING L cn .. , Stage ... Time Figure 13-4. States in the decomposition of organic matter in landfills. ...

Solid Waste Disposal 269 Figure 13-5. A motel built on a landfill that experienced differential settling. Biological aspects of ...

270 ENVIRONMENTALENGINEERING as a raw material. The tar contains water that must be removed; the charcoal is full of glass and m ...

Solid Waste Disposal 27 1 Contours in feet Scale: 1 inch=20W t t Figure 13-6. Map for siting a landfill. 13.4 If all of the read ...

...

Chapter 14 Reuse, Recycling, and Resource Recovery Finding new sources of energy and materials is becoming increasingly difficul ...

274 ENVlRONMENTAL ENGDEEIUNG picked up. This type of approach has had only limited success in democracies like the United States ...

Reuse, Recycling, and Resource Recovery 275 however, the material must be in separate and discrete pieces, a condition clearly n ...

276 ENVIRONMENTAL ENGINEERING Figure 14-2. A shredding facility showing the conveyor belt leading to a vertical shredder. Shredd ...

Reuse, Recycling, and Resource Recovery 277 Figure 14-3. Inside a vertical hammermill. The hammers have been worn down by the sh ...

278 ENVIRONMENTAL ENGINEERING Tll.:l:y, E , 0.1 91,1 II lFjl 0.01 0.01 0.1 1.0 10 100 Particle size (x) cm Figure 14-4. Rosi ...

Reuse, Recycling, and Resource Recovery 279 Feed rate, tonslh Feed rate, tonslh 1 Moisture in feed, % Figure 14-5. (A) Effect of ...

280 ENVIRONMENTAL. ENGINEERING where (1 - Y) is the cumulative fraction larger than some size x. If 0.2 = exp [:In , then x = Lp ...

Reuse, Recycling, and Resource Recovery 28 1 output I Input %+YO - Binary XI +Yl separator ir: WY2 Figure 14-6. Definition sketc ...

282 ENVIRONMENTAL ENGINEERING Screens Screens separate material solely by size and do not identify the material by any other pro ...

Reuse, Recycling, and Resource Recovery 283 of the trommel. Obviously, the efficiency of a trommel is enhanced when the parti- c ...