II. Core Uses and Characteristics of the Product

• Exclusive advantages of high molecular weight: The molecular weight ranges from 15 million to 25 million, with longer and more extended molecular chains. The adsorption and bridging capacity is far superior to conventional products. It can quickly capture fine suspended particles and colloidal impurities in water, forming dense and coarse flocs. It has a fast sedimentation speed and complete separation of mud and water, making it suitable for high-turbidity and high-difficulty wastewater treatment scenarios.
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• • Controllable and stable water solubility: Solid particles/powders are soluble in cold water. Although the dissolution time is slightly longer than that of medium and low molecular weight products, after dissolution, there are no residual insoluble substances or agglomeration. It forms a colorless, transparent and viscous colloidal solution, which is compatible with automatic dosing devices, does not block pipes, filters and metering pumps, and is convenient for operation and maintenance.
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  • • Top-notch flocculation purification efficiency: Relying on high negative charge density and long molecular chain structure, through the dual effects of charge neutralization and adsorption bridging, the purification efficiency for inorganic wastewater with high suspended solids and high turbidity is doubled. The dosage is controllable, and the combined use with inorganic flocculants achieves better results, significantly improving the solid-liquid separation efficiency.
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    • Outstanding working condition tolerance: It can work stably in a water temperature range of 5-55℃, with an applicable pH range of 6-14. It has stronger salt resistance and resistance to impurity interference, and can be adapted to complex industrial water bodies with high mineralization and high turbidity. Its performance fluctuation is small, and its long-term effectiveness is better than that of the ordinary APAM.
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    • Green, safe and free of hidden dangers: The solid product is non-toxic, non-corrosive, and has no risk of flammability or explosion. It does not contain heavy metals or harmful volatile substances. The residual acrylamide monomer content in qualified products is extremely low. The treated water body has no secondary pollution and meets national environmental protection discharge and water resource reuse standards.
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    • Precise performance customization: The degree of hydrolysis and particle size can be fine-tuned according to actual working conditions, and exclusive high molecular weight specifications can be customized. It is specifically adapted to segmented scenarios such as high-turbidity water treatment, oilfield flooding, and tailings dry discharge, combining versatility and professionalism.
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    • Economic adaptability to high-end scenarios: Although the unit price is slightly higher than that of ordinary models, it can play an efficient role at a dosage concentration of only 0.05-10ppm (0.05-10g/m³). There is no need for repeated dosage when treating high-difficulty wastewater, resulting in lower overall operation and maintenance costs.

    • 2.2 Segmented Application Scenarios

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    2.2.1 High-Difficulty Water Treatment Field (Core Application)

    This product focuses on the treatment of high-turbidity, high-concentration inorganic wastewater and is a core agent that cannot be replaced by conventional APAM. For high-turbidity mud wastewater and tailings wastewater from steel plants, metallurgical plants, coal washing plants, mineral processing plants, sand and gravel plants, etc., it can quickly achieve flocculation and sedimentation, tailings drying, and the effluent water is clear and up to standard, realizing the recycling of water resources; it is used for the purification of high-turbidity raw water in rivers, lakes, reservoirs, etc., and as a high-end flocculant additive in waterworks, it significantly reduces water turbidity and suspended solids content, improving the quality of effluent water; for the conditioning of high-moisture industrial sludge and municipal sludge, it efficiently improves sludge dewatering performance. After dewatering, the mud cake has extremely low moisture content, does not stick to the filter cloth, is easy to transport and harmlessly dispose of, and greatly improves the operating efficiency of filter presses and thickening tanks.

    2.2.2 Oil Exploitation Field (Exclusive Application)

    As a core oil displacement additive for tertiary oil recovery in oilfields, the core application scenarios of high molecular weight APAM are as follows: When used as an oil displacement agent, it can effectively adjust the rheology of injected water, expand the swept volume of the oil layer, significantly improve oil recovery efficiency, and achieve remarkable production-increasing effects; when used as a drilling mud additive, it can increase mud viscosity, reduce filtration loss, protect the integrity of the wellbore, reduce bit wear, and is suitable for drilling operations in deep wells and complex formations; at the same time, it can also be used as a raw material for fracturing fluids and profile control and water plugging agents, solving the problems of water channeling and leakage in oilfields, ensuring stable and high production of oilfields, and is suitable for various harsh working conditions in oilfield exploitation.

    2.2.3 High-end Papermaking Industry Field

    Used in the production of high-end paper products, it serves as an efficient retention and drainage aid as well as a paper strength agent: it improves the retention rate of fine fibers and fillers, reduces raw material loss, lowers production costs, and enhances paper output rate and uniformity; it increases the tensile strength, bursting strength, and folding endurance of paper, optimizes the forming quality of high-end paper products, and is suitable for the production of cultural paper, industrial paper, etc.; at the same time, it is used in papermaking white water recovery and wastewater treatment, efficiently recovers lost fibers, purifies white water to achieve recycling, and takes into account both environmental protection and production efficiency.

    2.2.4 Other High-end Industrial Fields

    • Mining and mineral processing: Suitable for rare metal and non-ferrous metal beneficiation operations, assisting in mineral flotation and dry tailings discharge, efficiently recovering useful minerals, achieving harmless disposal of tailings, and reducing water resource waste and environmental pollution in mining areas.
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      Textile printing and dyeing: Used as a sizing agent and finishing agent for high-end fabrics, it improves yarn toughness, reduces the breakage rate, endows fabrics with soft and anti-wrinkle properties, optimizes printing and dyeing effects, and at the same time treats high-turbidity printing and dyeing wastewater to improve purification efficiency.
      
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      Building materials and construction: Used as a thickener for high-end coatings, an additive for special cement, and a water plugging agent for engineering grouting. It enhances the adhesion, water retention, and strength of building materials, and is suitable for high-standard construction scenarios such as building engineering leakage plugging and foundation reinforcement.
      
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      Sugar-making food: Used in the high-end clarification process of cane sugar and beet sugar, it accelerates the sedimentation of impurities in sugarcane juice, improves the purity of sugar juice and filtration efficiency, and meets the safety and hygiene standards for food production.
      

    • III. Product Specification Parameters (High Molecular Weight Solid Version)

      High molecular weight solid anionic polyacrylamide is an exclusively customized product, with core parameters focusing on high molecular weight and medium-high hydrolysis degree. The conventional specifications and corresponding parameters are as follows, which precisely meet the needs of high-end and harsh working conditions:

      
      

      Parameter Items	High Molecular Weight Standard Type	High Molecular Weight and High Hydrolysis Type	Ultra-high molecular weight special type
      Molecular weight (10,000)	1500-2000	1800-2200	2200-2500
      Degree of hydrolysis (%)	25-30	30-35	28-35
      Appearance and form	White granules/powder	White granules/powder	White granules/powder
      Solid content (%)	≥92	≥92	≥92
      Dissolution time (min, room temperature)	60-90	70-100	90-120
      Applicable pH range	6-14	7-14	7-14
      Insoluble matter content (%)	≤0.08	≤0.08	≤0.05
      Particle Size Specification	1.0mm sieve residue ≤ 5%	1.0mm sieve residue ≤ 5%	0.8-1.2mm particles
      Core applicable scenarios	Industrial wastewater, mine sludge	High-turbidity water treatment, sludge dewatering	Oilfield oil displacement, high-end papermaking

      IV. Product Quality Standards

      This product strictly complies with the national industry standard of "Water Treatment Agent - Anionic Polyacrylamide" and the enterprise's high-end internal control standards. All indicators are strictly controlled to ensure stable product performance and suitability for high-end scenarios. The specific quality standards are as follows:

      4.1 Core Quality Indicators

      • Solid content: superior products ≥93%, qualified products ≥92%, eliminating problems such as caking, degradation, and molecular weight attenuation caused by excessive moisture, ensuring sufficient effective ingredients in the product.
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      • Residual acrylamide monomer: ≤0.05%, meeting environmental protection and safety requirements, avoiding secondary pollution of water bodies and harm to human health, and suitable for compliant scenarios such as food-related and drinking water treatment.
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      • Molecular weight deviation: within ±4%, strictly control the stability of high molecular weight, ensure that the core performances of flocculation, thickening and oil displacement meet the standards, and eliminate performance fluctuations.
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      • Degree of hydrolysis deviation: within ±1.5%, ensuring the stability of the product's negative charge density, adapting to the charge neutralization requirements of the corresponding working conditions, and improving processing accuracy.
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      • Insoluble matter content: ≤0.08%, ultra-high molecular weight type ≤0.05%, ensuring complete dissolution of the product, no impurity residue, and no clogging of dosing equipment and pipelines.
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      • Particle size uniformity: For the granular type, the proportion passing through a 1.0mm sieve is ≥95%; for the powder type, the proportion passing through a 0.2mm sieve is ≥92%, ensuring uniform dissolution rate and adaptation to automated dosing processes.
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      • Viscosity stability: Prepare a 0.2% aqueous solution, let it stand at room temperature for 24 hours, the viscosity reduction rate is ≤5%, ensuring the stable performance of the product's aqueous solution, with no attenuation when prepared and used immediately.

      • 4.2 Quality Control and Factory-Release Requirements

        1. Each batch of products must undergo a full range of tests before leaving the factory, including core indicators such as molecular weight, solid content, degree of hydrolysis, insoluble substances, and residual monomers, accompanied by a formal quality inspection report. Products that fail the inspection are strictly prohibited from leaving the factory; 2. Double-layer sealed and moisture-proof packaging is adopted to prevent moisture absorption, adulteration, and caking during production, storage, and transportation, ensuring the purity and performance of the product; 3. The performance attenuation rate of products stored for a long time (within the shelf life) is ≤3%, which does not affect the normal use effect; 4. Adulteration and selling of fake products are strictly prohibited. It is guaranteed that the product is pure high molecular weight APAM without doping of inferior fillers, so as to protect the user's rights and interests in use and production safety.

        V. Storage, Transportation and Operation Precautions

        5.1 Storage Requirements

        This product should be stored in a dedicated indoor warehouse that is cool, dry, and well-ventilated, with the ambient temperature controlled between 5-30℃. It should be kept away from fire sources, heat sources, and strong oxidizing substances, and protected from direct sunlight, rain, and moisture. The warehouse floor must be treated for moisture and seepage prevention. The products should be stacked 15-20cm above the ground, and direct contact with the ground is strictly prohibited. The stacking height should not exceed 20 bags to prevent damage to the packaging bags and caking of the product due to pressure. The unopened product has a shelf life of 24 months. Once opened, it must be immediately sealed and compacted, and it is recommended to use it up within 1 month to avoid moisture absorption, degradation, and molecular weight attenuation.

        5.2 Transportation Requirements

        Throughout the transportation process, measures must be taken to protect against rain, moisture, and sunlight. Enclosed trucks should be used for transportation, and mixed transportation in the open air is strictly prohibited. It must not be transported in the same vehicle as flammable, explosive, toxic, harmful, strong acid, strong alkali, or strong oxidizing substances. When handling, load and unload with care; throwing, dropping, and dragging are prohibited to avoid damage to packaging bags which may cause product leakage or moisture absorption. The transportation process should be smooth, avoiding severe bumps and collisions to prevent particle breakage and packaging cracking.

        
        

        

        

        

        

        

        5.3 Operating Instructions

        • For dissolving, clean tap water/clear water should be used. The use of sewage, wastewater, or water with high hardness containing high-valence metal ions is strictly prohibited to prevent product cross-linking failure and molecular chain breakage. When dissolving, the product should be sprinkled slowly and evenly; large quantities should not be added at one time to avoid the formation of fish-eye-like insoluble lumps, which would prolong the dissolution time.
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        • For dissolution equipment, materials such as plastic, glass fiber reinforced plastic, and 304 stainless steel are preferred. The use of iron or carbon steel containers is strictly prohibited to avoid iron ions damaging the molecular structure of the product. The stirring speed should be controlled at 150-250 r/min, and high-speed stirring is prohibited to prevent performance degradation caused by molecular chain breakage.
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        • Operators must take basic protective measures, wear rubber gloves and dust masks to avoid inhaling the powder into the respiratory tract or having it come into contact with the skin and mucous membranes; if contact occurs accidentally, immediately rinse with a large amount of running water and do not rub.
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        • The aqueous solution of high molecular weight APAM has high viscosity. It is recommended to prepare and use it immediately. The storage time at room temperature should not exceed 24 hours, and it can be appropriately extended in a low-temperature environment. Exposure to sunlight and standing still are strictly prohibited to prevent degradation and failure.
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        • The dosage needs to be adjusted on-site according to the turbidity of the water quality and the concentration of suspended solids. Excessive dosage may easily cause the water body to become viscous and flocs to float, which will instead reduce the separation efficiency. The optimal dosage should be determined following the principle of "small amounts multiple times, gradual increase".

        • VI. Product Packaging Instructions

          This product adopts a "double-layer moisture-proof sealed packaging". The outer layer is a thickened polypropylene woven bag, and the inner layer is a high-pressure polyethylene moisture-proof inner film. Each bag has a net weight of 25kg. The packaging is sturdy, durable, and has strong sealing performance, effectively blocking moisture and impurities. The surface of the packaging bag clearly prints information such as product name, model, molecular weight specification, degree of hydrolysis, net weight, manufacturer, production date, shelf life, execution standard, and storage and transportation warnings, with clear and traceable labels. Special specifications such as 1-ton bulk bags and small packages can be customized according to customer needs. All packages meet the requirements of long-distance transportation and long-term storage, preventing material leakage and moisture problems.