COMPLEX BIOSOLIDS TREATMENT WITH LIME

Liming is a traditional way to treat biosolids like municipal wastewater sludge or animal wastes, providing multiple effect of dewatering, hygienisation and stabilisation.​

COMPLEX BIOSOLIDS TREATMENT WITH LIME

Liming is a traditional and proven way to treat municipal wastewater sludge and animal by-products, generally called as biosolids. It provides multiple effect – helps dewatering, controls most of odours, provides complete hygienisation necessary for further reuse and enriches the treated biosolids with Ca ions, beneficial for further reuse in fields. 
 
3 main liming techniques are used at biosolids treatment:
  • Pre-liming where lime is mixed with biosolids in a liquid form prior to their dewatering 
  • Post-liming where quicklime is mixed with dewatered biosolids in a special mixer
  • The CODECAL process, developed by Carmeuse, combining advantages of both processes above

 

Key applications

Key benefits for BIOCALCO range use in biosolids treatment
  • BIOCALCO is the only lime range in the market, developed especially for biosolids treatment 
  • The BIOCALCO range covers all main treatment methods
  • The BIOCALCO “Q” range is available in 4 main reactivity grades, customised to individual liming ways
  • The BIOCALCO S fineness enables preparation of consistent milk-of-lime without abrasive substances, which might affect centrifuge dewatering
  • Content of metals in BIOCALCO is safely below the acceptance limits for agricultural soil amendments
  • Available in a ready-made slurry (milk-of-lime) form  (BIOCALCO M) in a range of concentrations up to 50% 
  • Significant milk-of-lime delivery costs reduction thanks to high concentration (BIOCALCO M 40, M 50)