can you help sir SUMMARY- 3 Marks Write a brief summary of the above extract with the help of the points given below and suggest a suitable title: Points- Cities and cleanliness - solid waste management - benefits of compost - agricultural productivity
Sir could you help in some of the questions related to waste management 1. Difference between double chamber incinerator and rotary kiln incinerator 2. Most common incinerator used in medical colleges 3. Autoclave cycles
1)Double chamber incinerator is with an additional second chamber which burns at a higher temperature than the first one (1200 vs 700-800 degree), so the residue of first chamber also will be incinerated well at this second chamber 2)Rotary Kiln Incinerator Rotary kiln incinerators, like the other types, are designed with • A primary chamber, where the waste is heated and volatilized, and • A secondary chamber, where combustion of the volatile fraction is completed. The primary chamber consists of a slightly inclined, rotating kiln in which waste materials migrate from the feed end to the ash discharge end. The waste throughput rate is controlled by adjusting the rate of kiln rotation and the angle of inclination. Volatiles and combustion gases pass from the primary chamber to the secondary chamber. The secondary chamber operates at excess air. Combustion of the volatiles is completed in the secondary chamber. Due to the turbulent motion of the waste in the primary chamber, solids burnout rates and particulate entrainment in the flue gas are higher for rotary kiln incinerators than for other incinerator designs. As a result, rotary kiln incinerators generally have add-on gas cleaning devices
STERILIZATION CYCLES 1)Gravity displacement Wrapped instruments Exposure time at 250°F (121°C)-30 mins Exposure time at 270°F (132°C) -15 mins Drying time-15-30 min 2)Gravity displacement Textile packs Exposure time at 250°F (121°C)-30 mins Exposure time at 270°F (132°C) -25 mins Drying time-15 min 3)Gravity displacement Wrapped utensils Exposure time at 250°F (121°C)-30 mins Exposure time at 270°F (132°C) -15 mins Drying time-15-30 min 4)Dynamic-air-removal (e.g., prevacuum) Wrapped instruments Exposure time at 250°F (121°C)-NA Exposure time at 270°F (132°C) -4 mins Drying time-20-30 min 5)Dynamic-air-removal (e.g., prevacuum) Textile packs Exposure time at 250°F (121°C)-NA Exposure time at 270°F (132°C) -4 mins Drying time- 5-20min 6)Dynamic-air-removal (e.g., prevacuum) Wrapped utensils Exposure time at 250°F (121°C)-NA Exposure time at 270°F (132°C) -4 mins Drying time-20min
