Organic Waste Recycling

182 Organic waste recycling: technology and management

Reactor data Upflow, V = 760 m

3 , D = 9 m,

H = 6 m, M = 12-50 stone Upflow, V = 6,400 m

3 , D = 26

m, H = 12.2 m, M = 90 mm pall ring Downflow, V = 12,500 m

3 , D

= 36 m, H = 12 m, M = tubular modules Upflow, V = 2,800 m

3 , D =

18.3 m, H = 11 m, M = tubular modules Upflow, V = 3,600 m

3 , D = 33

m, H = 4 + m, M = crossflow modules

Percent removal 70-80 COD 75-85 COD 65-75 COD 70-80 BOD 90-96 BOD 89 COD 97 BOD

HRT44 hr 24-36 hr 12-14 days 30-40 days 48-72 hr

Temp. (°

C)

32 37 38 37 35

COD loading (kg/m

3 - day)

4.4 8-12 6-7 0.2-0.7 1.2-2.5

Feed COD or BOD (mg/L) 8,000 COD 6,500 BOD 12,000 COD 85,000 COD 40,000 BOD 11,000 COD 8,650 BOD 4,000 COD 2,500 BOD

Table 4.14 Operating and performance data of some full-scale Type of waste (major constituent) Wheat starch (Carbohydrates) Chemical processing (alcohols) Rum distillery (carbohydrate) Landfill leachate (organic acids) Food canning (carbohydrate)

anaerobic in the U.S.A. and Canada (adapted from Young

and Yang 1991) a V = reactor volume, D = reactor diameter, H = reactor height, M = media