poly aluminium chloride in wastewater treatmen from Germany

poly aluminium chloride in wastewater treatmen from Germany
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  • Is poly-aluminum chloride a good coagulant for wastewater treatment?
  • As a common and low-cost coagulant, poly-aluminum chloride (PAC) may be widely used for wastewater treatment. In this article, the impacts of PAC on activated sludge and the treatment efficiency of sequencing batch reactor were investigated over 100 d for domestic wastewater treatment.
  • Is polyaluminum chloride a coagulant?
  • Inorganic coagulants such as polyaluminum chloride (PAC) have been used for years to treat water and wastewater. However, PAC as a coagulant can harm the living environment as it is toxic to humans and aquatic ecosystems. The use of natural and biocompatible materials such as sodium alginate as coagulant-aid can reduce the use of PAC.
  • How does poly aluminum chloride affect sludge production?
  • PAC benefited the aggregates of sludge flocs. PAC caused more EPS remained in sludge cells. Solubilization, hydrolysis, acidiogenesis, and methanogenesis were inhibited by PAC. Alb and Alc were the contributors to the decreased SCFA production. Poly aluminum chloride (PAC) is accumulated in waste activated sludge at high levels.
  • Why are aluminium based polymers used in water treatment?
  • These shortfalls in the use of alum have led to the synthesis of improved, aluminium-based polymers, which have been used extensively, over the few last decades, for treating water due to their high efficiency at lower dosages, and wider pH and temperature application ranges ( Sahu & Chaudhari 2013 ).