Learn about ClariPhos, a new, game-changing coagulant that beats alum and ferric for phosphorus removal and can help wastewater treatment plants achieve ultra-low phosphorus limits — as low as 0.07 mg/L. With this coagulant, treatment plants can avoid the need for costly tertiary filtration systems, improve clarifier performance and dramatically reduce sludge production.

Bishop Water’s ClariPhos outperforms conventional coagulants because it is made from lanthanum and cerium, rare earth elements that form a strong, crystalline bond with phosphorus and produce a denser, more stable precipitate that settles up to two times faster.

Switching to ClariPhos is easy. In many cases, it’s as simple as replacing conventional iron- or aluminum-based coagulants with ClariPhos. Once the switch is done, wastewater plants can continue using their existing chemical treatment equipment, but with far better results.

Several treatment plants in Ontario are using or evaluating ClariPhos and are experiencing favourable results. Over 50 plants in the US have already switched to rare earth coagulant to comply with stringent phosphorus discharge regulations and to achieve other operational benefits such as:

• Up to 50% reduction in sludge production;
• Up to 40% higher attained solids in dewatered sludge;
• 30-70% dose reduction over alternatives;
• Less acidic than ferric or alum. Less likely to affect pH and require pH adjustment;
• Low freeze temperature (-40C) eliminates heated storage or pipe heat tracing;
• Non-hazardous rating, safer to handle than Al- or Fe-based coagulants;
• Inhibits struvite build up