CQ-900 Media to remove Fluoride, Arsenic, Lead

Crystal Quest CQ-900

Fluoride, Arsenic and Lead selective Media

Crystal Quest CQ-900 is a high capacity synthetic absorbent media that is highly selective for fluoride, arsenic and lead. The extremely high surface area and pure distribution gives this media the highest possible operating capacity and lowest possible leakage.

FEATURES AND BENEFITS

Crystal Quest CQ-900 is a synthetic aluminum oxide that is specially processed to have a minimum of fines and other foreign matter.

The CQ-900 removes metals through a combination of absorption and chemical reaction woth the media, thus removal is not dependent on ion exchange.

The CQ-900 has a uniform particle size similar to ion exchange resins. It has minimal shrinkage of swelling and low pressure loss. It is physically stable and can be used over a wide pH range.

TYPICAL PROPERTIES

Chemical Structure Crystalline Aluminum Oxide

Physical Form Tough Uniform Granules

Screen Size Distribution

+28 mesh   10%

-48 mesh   5%

pH Range   4 - 10

Water Retention   Less than 5%

Solubility   Nil

SUGGESTED OPERATING CONDITIONS

Maximum Temperature  100 degrees C (212 F)

Maximum Free Chlorine  1 PPM

Minimum Bed Depth  36" ( 5 -7 ft preferred )

Backwash Rate   To achieve 10 - 25% Expansion

Service Flow Rate  1 -2 GPM/cu. ft.

FLUORIDE REMOVAL

Fluoride is removed by the CQ-900 by a chemical reaction with the media. The process is flow and pH sensitive. The best results are obtained when the flow is limited to about 1 GPM/ cu.ft. and the pH os heldat 5.5. Higher flows and higher or lower pH causes a significant loss of capacity. The best capacity obtainable is approximately 0.2 lbs. per cu. ft. Leakage of fluoride is generally less than 0.1mg/L to breakthrough.

ARSENIC REMOVAL

Inorganic arsenic (arsenite and arsenae ) can be removed by the CQ-900. The process is very pH snsitive and capacity decreases rapidly when the ph us below 5.5 or above 6.0. Arsenite is not removed nearly as well as arsenate; therefore, prechlorination to convert arsenite ot arsenate may be required. Arsenic removal is also afected by temperature and by the TDS of the feedwater. Increasing temperature increases capacity while increasing TDS decreases capacity.

Equilibrium capacity for arsenate (1,000 PPM, TDS, 25 degree C, 1 mg/L As) is approximately 0.66lb/cu.ft. Operating capacity to a 10% leakage end point is approximately 10% of the equilibrium capacity.

LEAD REMOVAL

Dissolved lead is absorbed by the CQ-900 and is not normally regenerable. Capacity for lead is at least 0.4 lb per cu.ft. while maintaing greater than 98% lead removal. This process is not dramatically affected by flow rate, temperature or TDS. However, pH should be maintained ablove 6.0 as lead removal drops under acidic conditons and below 10 as lead precipitates under basic conditions.

*CAUTION; DO NOT MIX ION EXCHANGE RESIN WITH STRONG OXIDIZING AGENTS. Nitric acid and other strong oxidizing agent can cause explosive reation when mixed with organic materials such as ion exchenge resins.

These suggestions and data are based on information we believe to be reliable. They are offered in good faith. However, we do not make any guarantee or waranty. We cautions against using these products in an unsafe manner or in violation of any patents; further, we assume no liablity for the consequences of any such actions.