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SEWAGE TREATMENT

Cationic Polyacrylamide (CPAM)

Most waste water treatment plants use the method of precipitation for their primary treatment and activate andsludge for secondary treatment.

The primary treatment is generally composed of precipitation aeration, combined with inorganiccoagulants(PAC),ferric chloride(PFC) and other polymer flocculants in order to reach the best result.

Belt press or centrifuge are commonly used in sewage dewatering process. Different flocculants are used fordifferent equipment and machine, usually cationic polyacrylamide(CPMA) are used in sludge dewatering.

Specifications for sludge dewatering and filter press:

Items Solid content（%） Cationicity（%） PH value Dissolving Time

Power ≥90 3-50 1-10 <60min

emulsion ≥40 3-50 1-10 <15min

Anionic Polyacrylamide (APAM)The PAM products are used in various industrial waste treatments as coagulants and flocculants and flocculants.The main fields involve:Beer industry/pharmaceutical industry/papermaking industry/Mining industry/Petrochemistry industry/Textileprinting and Dyeing/Chemical industry/Food processing industry/Waste water (containing oil) treatmentindustry,etc.Wastewater treatment is necessary in many kinds of industrial fields, the selection of Polyacrylamide variesaccording to the type of wastewater, and the treatment process.In the primary waster treatment(floation or sediment),we use a combination of inorganic additive and flocculant.In some specific cases, We must adjust the PH in order to obtain a better result.In the last step of dewatering process, the use of one kind of organic flocculent is enough to meet the needs.Most used products are cationic Polyacrylamide. Only in some specials cases, anionic Polyacrylamide are used.The products will be chosen according to each process by technicians.

Specifications for process of flotation and sedimentation:

Items Solid content（%） Degree of Hydrolysis（%） PH value Dissolving Time

Power ≥90 3-50 4-12 <1.5H

emulsion ≥40 3-50 4-12 <15min