100 tons/h of municipality solid waste with the composition shown in the table b

Question

100 tons/h of municipality solid waste with the composition shown in the table below is applied to a rotary screen for the removal of glass prior to shredding. Determine the recovery efficiency and effectiveness of the screen based on the following experimental data Weight of underflow 10 tons/h Weight of glass in screen underflow 7.2 tons/h Effectiveness of screen1- Component | Mass % Food waste % Moisture Content 60 Cardboard Plastics Textiles Rubber Leather Glass 16.00 40.00 8.00 12.00 7.00 4.50 5 10 8.00 0.5

Explanation / Answer

Total flow rate of solid waste = 100 tons/h

from table, mass % of glass = 8 tons/h

moisture is 0.5 % .

So, actual mass of glass = 8 tons/hr x( 100-0.5)/100 = 7.96 tons/hr

weight of underflow = 10 tons/hr

weight of glass in underflow = 7.2 tons/hr

mass fraction = 7.2/10 = 0.72

weight of feed = 100 tons/hr

mass fraction of glass = 7.6/100 = 0.076

screen effectiveness = (10 * 0.72)/(100*0.076) * ( 1 - (10*(1-0.72) / 100(1-0.076))

= 0.92

recovery efficiency = 7.2/7.6 = 94.7%

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.