CQA certified asenic resin media

CQA certified, iron oxide based selective resin media

Removes arsenic (arsenate and arsenite) from water

CQA certified, iron oxide based selective resin media that utilize nan-otechology surface chemistry to produce a sorben media with excceptional affinity and capacity for arsenic - both arsenate and arsenite.

CQA combines a unique chemistry based on hydrous iron oxide nan-oparticles thst have a very high affinity for arsenic with a durable, non-friable, spherical polymer substrate. This ideal combination of selectivity and substrate durability means that CQA can effortlessly remove arsenic by using a lead-lag or parallel design configuration.

Superior bead strenrth means fines will not be generated nor will pressure be a concern throughout long-term performance. Based sphericity also ensures plug flow of the raw water through the bed thereby maximizing the arsenic loading per vessel and complete capacity utilization.

 

Physical & Chemical Characteristics

Matrix structure: Macroporous impregnated with Fe nano-particles

Polymer structure: Polystyrene cross-linked with DVB

Whole Beads: 95% min

Bead size range: 0.300 - 1.200 mm

Physical Form and appearance: Reddish-Brown spherical beads

Bulck density: 790 - 820 g/l arsenic

PH limits, operating: 4.5 - 8.5

Contact time: .5 to 2 minutes

Specific service flow rate: T20 -24 BV/h (2-5 to 3 gpm/ft3) up to 32 BV/h (gpm/ft3)

Max. operating temperature: (176 F) 80 C

Capacity: 0.5 - 4 g As/l (depending on water composition and operating coditions)

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Operates at conventional well head pressures (up to 115 psi or 8 bars)

CQA is similar in appearance and handling to conventional ion exchange resins

CQA beads have superior crush strengh

CQA product handles like conventional ion resins

No fines reneration during sevice

No need to backwash ArsenXnp during service due to pressure drop concerns provided influent turbidity, iron and manganese are below 1 NTU, 0.5 ppm and 0.025 ppm respectively. For higher capacity yields, it is recommended to pretrat and or prefilter for best results. However, on startup of a new charg of resin, it is important to backwash and classifies the bed by expanding by about 50% for up to 30 minutes to obtain best hydraulics.

CQA offers minimal pressure drop through the resin bed

Spherical beads facilitates "plug-flow" through the media

Minimal labor needed for operation or change-outs due to very high capacity