Cationic polyacrylamide/flocculant for starch and  vinasse of recycling

Cationic polyacrylamide (CPAM) is a linear polymer compound, because it has a variety of reactive groups, can via affinity and adsorption with many substances to form hydrogen bonds. Mainly negatively charged colloid flocculation with turbidity, bleaching, adsorption, adhesion and other functions, suitable for dyeing, paper, food, construction, metallurgy, mineral processing, coal, oil, aquatic products processing industry and other fermented organic colloid content higher wastewater treatment, especially for dehydration treatment of urban sewage, sludge, paper sludge and other industrial sludge.

1. Product Form:

Cationic polyacrylamide can be divided into two forms solid particles and emulsion according to the different forms, the most widely is the solid particulate used on the market, and cationic polyacrylamide emulsion as a new form of market rarely used.

2. Technical indicators:

English name: cationic polyacrylamide/polyelectrolyte

Appearance: white granule/powder

Solid content: ≥88%

Molecular weight: 8-12million

Water insoluble: ≤2%

Monomer residual: ≤0.1%

Concentration: 10-70 %

Dissolution time: <60minute

3. Features:

1) Good water-soluble, can be completely soluble in cold water.

2) Add a small amount of cationic polyacrylamide products can be greatly flocculation. Generally only add 0.01 ~ 10ppm (0.01 ~ 10g/m3), to fully play its role.

3) While using cationic polyacrylamide products and inorganic flocculants (ferric sulfate, chloride, iron, etc.), may show a greater effect.

4. Function:

Anionic polyacrylamide, because it has:
1, clarify purification effect;
2, settlement promoting effect;
3, filtering, promote role;
4, thickening effect and other effects.
In waste liquid treatment, the sludge concentration dehydration, mineral processing, coal washing, paper making, etc., can fully meet the requirements of a variety of fields.

5. Product Performance:

1) PAM has unique decolorization ability, mainly applied to the wastewater with high colority dye factory, suitable for active dyes, acid dyes and disperse dyes.

2) Can also be used for the treatment of textile, printing and dyeing, printing ink and other industrial wastewater

3) The product of wastewater decolorization rate of up to 95%, COD removal rate between 40-70%

6. User Guide:

1) Polyacrylamide is organic polymer compound, can be divided into anionic polyacrylamide, cationic polyacrylamide and non-ionic polyacrylamide, white powder or granule, soluble in water, but the dissolution rate is slow.

2) Anionic polyacrylamide is generally used for waste water treatment flocculant, cationic generally used for sludge dewatering.

3) As the flocculant dosage is 1-2ppm, each with 1 tons of waste water dosage is about 1-2g

4) Usually the anionic formulated in 0.1% aqueous solution when using, cationic may be formulated into 0.1% -0.5%

5) The prepared solution should be first dissolved in the water tank, and then turn on theblender, then PAM is slowly added along the vortex, PAM can not be a one-time fastinput, otherwise PAM will agglomerate and insoluble

6) After the addition of PAM in general should continue to stir for more than 30min to ensure that it fully dissolved

7) After dissolution of the PAM should be used as soon as possible, generally do not exceed 36h anionic, cationic dissolved easily hydrolyzed, should be used within 24h

7. Precautions:

1) Floc size: floc size is too small to affect the speed of drainage, floc is too general toreduce mud cookies degree. After selection of polyacrylamide molecular weight can adjust the size of the floc.

2) Sludge characteristics. The first point to understand the sludge sources, characteristics, composition and proportion. According to the properties of different, sludge can be divided into two kinds of organic and inorganic sludge. Cationic polyacrylamide for organic sludge, anionic polyacrylamide flocculant relative to inorganic sludge, alkaline is very strong using cationic polyacrylamide, and the acid is very strong should not be with anionic polyacrylamide, solid content of sludge is usually with large amount of polyacrylamide

3) Polyacrylamide ion: for dewatering sludge, users can first use different ion degree flocculant to do the test, select the best suitable polyacrylamide, can obtain the bestflocculent effect, but also save the cost

8. Common areas:

1) As flocculating agent, mainly used in industrial solid-liquid separation process, including sedimentation, clarification, sludge thickening and dewatering process, the main industry application: urban sewage treatment, paper industry, food processing industry, petrochemical industry, metallurgical industry, mineral processing industry, dyeing wastewater treatment industry and sugar industry and various industrial. Used In the treatment of urban sewage and meat, poultry, food processing waste water, through which contains positively charged groups on the sludge in the negatively charged organic colloidal charge neutralization and bridging polymer aggregation function, to colloidal particles aggregate into large flocs, separated from the suspension. Obvious effect, less dosage

2) In the paper industry can be used for paper dry strength agent, retention agent, filter aid agent, can greatly improve the paper quality, save the cost, improve the paper mill production capacity. Electrostatic bridge can occur directly in order to achieve enhanced physical strength of paper, reduce the loss of fibers or fillers, accelerate treatment, from enhanced retention and inorganic ions, and other organic polymer fibers to help filter effects can also be used Whitewater treatment, while the de-inking process can play a significant flocculation

3) Fiber mud (asbestos cement products) can make the molding of asbestos cement products water drainage properties improved, the asbestos material strength increased; in the insulation board, can improve the combination of additives and fiber.

4) In mining, coal industry can be as clarify agent for mine water, coal washing wastewater

5) Can be used for the treatment of dyeing wastewater, wastewater, oily wastewater, turbidity and decoloring, to achieve discharge standards

6) In phosphoric acid purification, helps gypsum separation

7) Water treatment flocculant for water plants using river water

9. Polyacrylamide flocculant dissolution method and storage conditions:

Polyacrylamide is water soluble polymers, general granular polyacrylamide in a dry, cool place can be stored for more than two years, match into solution, the storage time is very limited. In general, the concentration of the solution was 0.1%, the non, anionic polymer solution in less than a week; cationic polymer solution is not more than a day. The stability of solution and concentration, with the more concentrated (3% - 5%)solution, the longer the storage time. But the solution is not 3% - 5% directly to the sewage treatment, but also diluted before use. Cationic solution stable at PH less than 5, due to hydrolysis and failure quickly when the PH is greater than 6.