CARI-775 Cationic Coagulant


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CARI-775 is an aqueous solution of inorganic cationic coagulant, effective for increasing the particle size of precipitated of metal compounds typically produced in industrial waste water treatment processes. CARI-775 is recommended as a treatment chemical for effluents, where the metals have been precipitated by hydroxide, sulfide, dithiocarbamates (CARI-610, CARI-640, and CARI- 650), ferrous sulfate, and sodium borohydride. It can be used in conjunction with anionic polymer to further enhance settling rates. It can be used in continuous flowing processes which use gravity clarification or membrane microfiltration or to enhance the settling and filtration in batch treatment concentrates.


Depending on the specific application, the optimum concentration of CARI-775 to achieve rapid settling and superb liquid clarity, is determined by jar testing. The concentration of the various waste water contaminants, such as, suspended solids, total dissolved sale, COD, BOD, and oil and grease, all have an impact on the optimum CARI-775 dosage. CARI-775 is effective over a wide pH range (4.0 to 11.0).

Addition of CARI-775 is controlled by volumetric feed, proportional to the wastewater feed rate. CARI-775 can be added prior to, during, or after the metal precipitation step. The optimum addition location is a function of the waste composition and the equipment available to perform the precipitation.

When used in a gravity settling system, CARI-775 is usually used in conjunction with a high molecular weight anionic polymer, which is added in a subsequent reaction tank after the CARI-775.

When used in conjunction with membrane microfiltration, addition of anionic polymer is not allowed with out CARI approval

Laboratory evaluation is recommended to determine the optimum conditions for use of the CARI-775. Compliance and Recycling, Inc. will provide on site technical support to assist with the Treatability study.

MSDS SHEETS: Available upon request.


Ayer, MA Drum (55 gal.) 503 lbs.

Tote (275 gal.) 2 ,513 lbs.

Bulk 20,000 lbs. min.