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| Cationic Polyacrylamide | |||||
| ITEM | SOLID CONTENT | EFFECTIVE PH | BULK DENSITY | MOLECULAR WEIGHT | CATIONIC DEGREE |
| C6005 | 89% MIN | 2.0-9.0 | 0.75-1.0 | 1000-1200 | 5% |
| C6010 | 1000-1200 | 10% | |||
| C6015 | 1000-1200 | 15% | |||
| C6020 | 1000-1200 | 20% | |||
| C6025 | 1000-1200 | 25% | |||
| C6030 | 1000-1200 | 30% | |||
| C6035 | 1000-1200 | 35% | |||
| C6040 | 1000-1200 | 40% | |||
| C6045 | 1000-1200 | 45% | |||
| C6050 | 1000-1200 | 50% | |||
| C6060 | 1000-1200 | 60% | |||
| C6070 | 1000-1200 | 70% | |||
| C6080 | 1000-1200 | 80% | |||
| Anionic Polyacrylamide | ||||
| ITEM | SOLID CONTENT | EFFECTIVE PH | MOLECULAR WEIGHT | ANIONIC DEGREE |
| A2001 | 89% MIN | 2.0-9.0 | 900 | 4-5% |
| A2002 | 1000 | 1-2% | ||
| A2003 | 1100 | 30% | ||
| A2004 | 1600-1700 | 11-13% | ||
| A2005 | 1700-1800 | 18-20% | ||
| A2006 | 1800-1900 | 23-25% | ||
| A2007 | 1400-1600 | 27-30% | ||
| A2008 | 1800-2000 | 27-29% | ||
| A2009 | 3000-3500 | 28-35% | ||
| A2010 | 2500-3000 | 25-30% | ||
What is the working principle of PAM?
(1) The principle of flocculation: when PAM is used as a flocculant, it is related to the surface properties of the flocs, especially the potential, viscosity, turbidity and pH value of the suspension. The dynamic potential of the particle surface is the cause of particle inhibition Adding PAM with the opposite surface charge can reduce the kinetic potential and condense.
(2) Adsorption and bridging: PAM molecular chains are fixed on the surfaces of different particles, and polymer bridges are formed between the particles, so that the particles form aggregates and settle.
(3) Surface adsorption: various adsorptions of polar group particles on PAM molecules.
(4) Reinforcing effect: PAM molecular chains and dispersed phase implicate the dispersed phase together through various mechanical, physical, chemical and other actions to form a network, thereby playing a reinforcing role.
What are the properties of polyacrylamide?
(1) Flocculation: PAM can make the suspended solids pass through and act as a bridge for adsorption and flocculation.
(2) Adhesiveness: It can play an adhesive role through mechanical, physical, and chemical effects.
(3) Resistance reduction: PAM can effectively reduce the frictional resistance of the fluid, adding a small amount of PAM to water can reduce the resistance by 50-80%.
(4) Thickening: PAM has a thickening effect under both neutral and acidic conditions. When the pH value is above 10, PAM is easy to hydrolyze and forms a semi-network structure, and the thickening will be more obvious.
The following aspects should still be paid attention to in the selection of polyacrylamide products:
1) Climate change (temperature) affects the selection of flocculants
2) Select the molecular weight of the flocculant according to the floc size required by the treatment process.
3) The charge value of the flocculant must be screened through experiments.
4) The strength of the floc can be improved by increasing the molecular weight of the flocculant.
5) The flocculant must be fully mixed and dissolved with the sludge before treatment.
6) The selection of flocculant must fully consider the requirements of process and equipment
How to use and precautions
1. Dissolution of polyacrylamide
(1) Dissolved water: It is recommended to use low-hardness water with a neutral PH value. Use groundwater. Water with too many dissolved inorganic substances or metal ions will easily reduce product performance.
(2) Dissolution time: Dry powder products can be used for best performance after dissolving for 1 hour (it is recommended that non-ionic dry powder products be dissolved for more than 2 hours). It is recommended to use up the dissolved solution on the same day, and it is best not to exceed 24 hours, otherwise the polyacrylamide solution will degrade rapidly and seriously affect the use effect.
(3) Dissolution concentration: the general dissolution concentration of cationic products is 0.2% (0.1%-0.5% is feasible); the dissolution concentration of anionic and non-ionic products is 0.1% (0.05%-0.3% is feasible).
(4) The dissolving operation should be carried out in tanks made of plastic, ceramics, stainless steel, etc. The stirring speed should not be too high, generally 200 rpm, and the time should not be less than 1 hour. To accelerate dissolution, the maximum temperature of the liquid should be less than 60°C. Avoid using high-shear rotor pumps such as centrifugal pumps when transferring diluted solutions, and use low-shear pumps such as screw pumps.
(5) Sufficient dissolution: When dissolving this product, care should be taken, especially the flow rate of the automatic dosing device should not be too fast to prevent polyacrylamide from agglomerating, fish-eye phenomenon, and unnecessary trouble caused by pipeline blockage.
2. Product dosage
(1) Treatment water volume Dosage amount = Treatment water volume m3/h*Dosage volume g/m3
(2) Dry sludge volume = treated water volume * ((1-sludge moisture content)/(1-mud cake moisture content))
(3) Unit consumption per ton of water = dosing amount (Ton) * drug unit price (Y/Ton) / treated water volume m3
| Cationic Polyacrylamide | |||||
| ITEM | SOLID CONTENT | EFFECTIVE PH | BULK DENSITY | MOLECULAR WEIGHT | CATIONIC DEGREE |
| C6005 | 89% MIN | 2.0-9.0 | 0.75-1.0 | 1000-1200 | 5% |
| C6010 | 1000-1200 | 10% | |||
| C6015 | 1000-1200 | 15% | |||
| C6020 | 1000-1200 | 20% | |||
| C6025 | 1000-1200 | 25% | |||
| C6030 | 1000-1200 | 30% | |||
| C6035 | 1000-1200 | 35% | |||
| C6040 | 1000-1200 | 40% | |||
| C6045 | 1000-1200 | 45% | |||
| C6050 | 1000-1200 | 50% | |||
| C6060 | 1000-1200 | 60% | |||
| C6070 | 1000-1200 | 70% | |||
| C6080 | 1000-1200 | 80% | |||
| Anionic Polyacrylamide | ||||
| ITEM | SOLID CONTENT | EFFECTIVE PH | MOLECULAR WEIGHT | ANIONIC DEGREE |
| A2001 | 89% MIN | 2.0-9.0 | 900 | 4-5% |
| A2002 | 1000 | 1-2% | ||
| A2003 | 1100 | 30% | ||
| A2004 | 1600-1700 | 11-13% | ||
| A2005 | 1700-1800 | 18-20% | ||
| A2006 | 1800-1900 | 23-25% | ||
| A2007 | 1400-1600 | 27-30% | ||
| A2008 | 1800-2000 | 27-29% | ||
| A2009 | 3000-3500 | 28-35% | ||
| A2010 | 2500-3000 | 25-30% | ||
What is the working principle of PAM?
(1) The principle of flocculation: when PAM is used as a flocculant, it is related to the surface properties of the flocs, especially the potential, viscosity, turbidity and pH value of the suspension. The dynamic potential of the particle surface is the cause of particle inhibition Adding PAM with the opposite surface charge can reduce the kinetic potential and condense.
(2) Adsorption and bridging: PAM molecular chains are fixed on the surfaces of different particles, and polymer bridges are formed between the particles, so that the particles form aggregates and settle.
(3) Surface adsorption: various adsorptions of polar group particles on PAM molecules.
(4) Reinforcing effect: PAM molecular chains and dispersed phase implicate the dispersed phase together through various mechanical, physical, chemical and other actions to form a network, thereby playing a reinforcing role.
What are the properties of polyacrylamide?
(1) Flocculation: PAM can make the suspended solids pass through and act as a bridge for adsorption and flocculation.
(2) Adhesiveness: It can play an adhesive role through mechanical, physical, and chemical effects.
(3) Resistance reduction: PAM can effectively reduce the frictional resistance of the fluid, adding a small amount of PAM to water can reduce the resistance by 50-80%.
(4) Thickening: PAM has a thickening effect under both neutral and acidic conditions. When the pH value is above 10, PAM is easy to hydrolyze and forms a semi-network structure, and the thickening will be more obvious.
The following aspects should still be paid attention to in the selection of polyacrylamide products:
1) Climate change (temperature) affects the selection of flocculants
2) Select the molecular weight of the flocculant according to the floc size required by the treatment process.
3) The charge value of the flocculant must be screened through experiments.
4) The strength of the floc can be improved by increasing the molecular weight of the flocculant.
5) The flocculant must be fully mixed and dissolved with the sludge before treatment.
6) The selection of flocculant must fully consider the requirements of process and equipment
How to use and precautions
1. Dissolution of polyacrylamide
(1) Dissolved water: It is recommended to use low-hardness water with a neutral PH value. Use groundwater. Water with too many dissolved inorganic substances or metal ions will easily reduce product performance.
(2) Dissolution time: Dry powder products can be used for best performance after dissolving for 1 hour (it is recommended that non-ionic dry powder products be dissolved for more than 2 hours). It is recommended to use up the dissolved solution on the same day, and it is best not to exceed 24 hours, otherwise the polyacrylamide solution will degrade rapidly and seriously affect the use effect.
(3) Dissolution concentration: the general dissolution concentration of cationic products is 0.2% (0.1%-0.5% is feasible); the dissolution concentration of anionic and non-ionic products is 0.1% (0.05%-0.3% is feasible).
(4) The dissolving operation should be carried out in tanks made of plastic, ceramics, stainless steel, etc. The stirring speed should not be too high, generally 200 rpm, and the time should not be less than 1 hour. To accelerate dissolution, the maximum temperature of the liquid should be less than 60°C. Avoid using high-shear rotor pumps such as centrifugal pumps when transferring diluted solutions, and use low-shear pumps such as screw pumps.
(5) Sufficient dissolution: When dissolving this product, care should be taken, especially the flow rate of the automatic dosing device should not be too fast to prevent polyacrylamide from agglomerating, fish-eye phenomenon, and unnecessary trouble caused by pipeline blockage.
2. Product dosage
(1) Treatment water volume Dosage amount = Treatment water volume m3/h*Dosage volume g/m3
(2) Dry sludge volume = treated water volume * ((1-sludge moisture content)/(1-mud cake moisture content))
(3) Unit consumption per ton of water = dosing amount (Ton) * drug unit price (Y/Ton) / treated water volume m3
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