Question

Dried ............ is used as manure.

Answer 1

• Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems or Semi-solids such as faeces that settle down during wastewater treatment are called sludge.
• Dried Sludge is used as manure instead of taking up space in a landfill or other disposal facility to improve and maintain productive soils and stimulate plant growth because it has nutrient-rich organic materials.
  
• Hence Dried sludge is used as manure.