Page 209 - Materials Chemistry, Second Edition

190 Life Cycle Assessment of Wastewater Treatment

Compost Compost

Digested sludge Digested sludge

17α-Ethinylestradiol Secondary sludge Estriol Secondary sludge

Primary sludge Primary sludge

600 –1 450 300 150 0 Concentration (µg kg d.m.) 1200 –1 900 600 300 0 Concentration (µg kg d.m.) Box-and-whisker plots of a nervous stimulant, three estrogens, and a lipid regulator in primary (n = 36), secondary (n = 36), anaerobically

Compost Compost Compost

Digested sludge Digested sludge Digested sludge

Caffeine 17β-Estradiol Gemfibrozil
Secondary sludge Secondary sludge Secondary sludge

Primary sludge Primary sludge Primary sludge digested (n = 36), and compost (n = 9) sludge.

2800 2100 1400 700 0 Concentration (µg kg d.m.) 1600 1200 800 400 0 Concentration (µg kg d.m.) 6000 4500 3000 1500 0 Concentration (µg kg d.m.)
FIGURE 9.2
–1
–1
–1