AQUASTAT -101 is
an aqueous polyelectrolyte based Antiscalant manufactured by Ion Exchange. It
has been specially designed to be used in reverse osmosis application.
Reverse Osmosis (RO) is the procedure where deionization of
water takes place as it is being passed through under pressure through a
semi-permeable reverse osmosis membrane. Using of the reverse osmosis membrane for
filtration of heavily soiled water is generally accompanied by some serious
threats that may lower down the productivity of the membrane. Generally the
three major issues or concern are Degradation, Fouling of RO membranes and Scaling.
Deposition of particles on a membrane that leads to the
plugging of the membrane is referred to as scaling. Reverse osmosis (RO)
membranes along with the flow passages within the membrane elements tend to
scale due to the formation of precipitation of sparingly soluble salts, such as
calcium carbonate, barium sulfate, calcium sulfate and strontium sulfate. Most
natural waters also comprises of relatively higher concentrations of sulfate,
calcium and bicarbonate ions. Scaling generally takes place on RO membranes
when the concentration of the scale-forming substances surpasses saturation limit
thereby producing added solids within the RO feed water. These substances get
hard to be removed from RO membranes due to their low soluble nature. Scaling dwindle
the efficiency of the membranes in minimizing the concentration of solids and
leads to more frequent cleanings.
RO antiscalant, sometimes mentioned as scale inhibitors, manifests
as specialized chemical formulations helps in increasing the solubility of
sparingly soluble salts such as CaSO4, CaCO3, BaSO4, SrSO4, and CaF which are the
most common scales of concern when added to the membrane system. These
antiscalants are to be used as an important component in the operation of the
system in order to run the reverse osmosis systems efficiently and in a well
organized manner.
AQUASTAT -101- an
effective antiscalant exhibits
to be a white to amber coloured formulation having a slightly acidic odour. It manifests
a pH of 3.5 and is of specific gravity about 1.2. AQUASTAT -101 inhibits the formation and growth of alkaline earth
carbonate and sulfate scales. It also helps in dispersing suspended solids and
colloids. It acts as an excellent crystal distorter and is efficient at low
dosage. AQUASTAT -101 performs as an
excellent threshold inhibitor of alkaline earth scales and displays excellent
dispersion of suspended solids and colloids.
