II. Core Characteristics and Performance Advantages of the Product

2.1 Basic Physical and Chemical Characteristics

• Appearance and form: The mainstream products are white or off-white granular or powdery, with uniform and plump particles, no agglomeration, no impurities, and no peculiar smell; colloidal products are colorless, transparent and viscous liquids, without stratification, precipitation, or suspended solids.

  Water solubility: Excellent water solubility, can quickly dissolve in water at room temperature, forming a transparent and viscous solution after dissolution, with no visible insoluble substances to the naked eye. Its dissolution performance in low-temperature environments is better than that of ionic polyacrylamide, making it suitable for low-temperature water treatment scenarios.

  Charge characteristics: Non-ionic type, the molecular chain is electrically neutral, without positive or negative charge repulsion, and has extremely low sensitivity to water pH value and salinity. It performs stably in acidic and neutral water bodies with pH 2-8, and will not fail due to changes in water ion concentration.

  Thermal stability: It can withstand high temperatures below 120℃ in a dry state, and the aqueous solution maintains stable performance below 80℃. There is no degradation or deterioration during long-term storage, and the molecular chain structure remains intact.

  Safety: Non-toxic and non-corrosive, free of harmful impurities such as heavy metals, with the residual monomer content strictly controlled within the national standard limits. During use, it will not cause secondary pollution to water bodies, soil, or the human body, and is suitable for compliant scenarios such as drinking water pretreatment and food processing assistance.

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• 2.2 Core Performance Advantages

  2.2.1 Excellent flocculation performance, suitable for complex water qualities

  Non-ionic polyacrylamide achieves flocculation through the adsorption bridging effect and net catching and sweeping effect of molecular chains, without relying on charge neutralization. Its treatment effect on acidic wastewater, low-turbidity water, high-organic matter wastewater, and wastewater containing fine suspended particles is far superior to that of anionic polyacrylamide. It can quickly adsorb suspended solid particles and colloidal impurities in water, agglomerate small particles into large-volume flocs. The flocs are dense, have a fast settling speed, and are not easy to break, which can significantly improve the efficiency of solid-liquid separation and reduce the turbidity and pollutant content of the effluent.

  
  

  2.2.2 Strong anti-interference ability and wide application range

  The molecular structure of the product is stable and not significantly affected by factors such as water pH, salinity, hardness, and temperature. It can still maintain a stable treatment effect in scenarios where conventional flocculants are ineffective, such as high-salt wastewater, low-temperature wastewater, and acidic wastewater. At the same time, it can be used synergistically with inorganic flocculants such as polyaluminum chloride, aluminum sulfate, and polyferric sulfate to form a composite flocculation system, further improving the treatment efficiency and reducing the cost of chemical dosage.

  2.2.3 Fast dissolution rate, convenient and efficient to use

  Compared with ordinary polymer flocculants, this product adopts a refined granulation process, with a moderate specific surface area of the particles. There is no agglomeration or clustering during dissolution. It can be completely dissolved by stirring at room temperature for 30-60 minutes, without the need for long-term high-temperature heating. While reducing energy consumption, it avoids performance degradation caused by the breakage of molecular chains due to high temperature, ensuring the stability of the use effect of the agent.

  2.2.4 Outstanding versatility, suitable for multi-industry needs

  In addition to its core flocculation function, it also has excellent thickening, bonding, dispersing, and film-forming properties. It can flexibly adjust parameters such as molecular weight and degree of hydrolysis according to the needs of different industries, making it suitable for multiple fields including water treatment, papermaking, petroleum, metallurgy, textiles, building materials, and soil improvement. It realizes the use of one agent for multiple purposes, reducing the procurement and usage costs of enterprises.

  2.2.5 High purity, low residue, and strong compliance

  The product is polymerized using high-purity acrylamide monomers. The impurity content is strictly controlled during the production process. Indicators such as water-insoluble substances and residual monomers are far superior to the national standard limits. It meets the compliance requirements of industries such as environmental protection, food, and drinking water, has no potential safety hazards, and can be used stably for a long time.

  
  

  

  
  

  III. Product Specification Parameters and Model Classification

  3.1 Core Specification Parameters (Regular Model)

  Parameter Items	Indicators of granular products	Indicators of powdered products	Indicators of colloidal products
  Appearance	White uniform particles, no agglomeration	White fine powder, no impurities	Colorless, transparent, viscous colloid, no stratification
  Solid content (%)	≥88	≥90	≥30
  Molecular weight (10,000)	600-1800	800-1500	300-800
  Degree of hydrolysis (%)	≤5	≤5	≤3
  Water-insoluble substances (%)	≤0.2	≤0.15	≤0.1
  Residual monomer (%)	≤0.05	≤0.05	≤0.03
  Dissolution time (25℃, min)	40-60	30-40	10-20
  Aqueous solution pH value (0.1%)	7.0-8.0	7.0-8.0	6.5-7.5
  Particle size (mesh)	20-80	80-120	——
  Viscosity (mPa·s, 0.5% aqueous solution)	300-600	350-650	200-400

  3.2 Model Classification and Adaptation Scenarios

  Non-ionic polyacrylamide is divided into different models according to molecular weight, purpose, and form, which can meet the needs of differentiated scenarios. The specific models and their applicable scenarios are as follows:

   

  • NPAM-600 type: low molecular weight (6 million), granular, extremely fast dissolution rate, suitable for scenarios such as rapid flocculation of acidic wastewater, dispersion of fine particles, and preparation of textile sizing agents;
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  • NPAM-1000 type: medium molecular weight (10 million), granular, balanced overall performance, suitable for municipal sewage pretreatment, conventional flocculation of industrial wastewater, and papermaking retention and drainage scenarios;
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  • NPAM-1500 type: high molecular weight (15 million), granular, extremely strong flocculation ability, suitable for scenarios such as high-turbidity acidic wastewater treatment, sludge dewatering, and metallurgical mineral processing tailings treatment;
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  • NPAM-1800 type: ultra-high molecular weight (18 million), powdered, excellent in both thickening and flocculation, suitable for oilfield drilling mud, tailings dry discharge, and high-viscosity wastewater treatment scenarios;
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  • NPAM-J type: colloidal, low molecular weight, suitable for food processing wastewater, drinking water pretreatment, and fine chemical thickening scenarios.
  •  

  It also supports customized production. According to the actual needs of customers, parameters such as molecular weight, degree of hydrolysis, solid content, and particle size can be adjusted to create exclusive models, which are suitable for the personalized needs of special industries and special water qualities.

  IV. Product Quality Standards and Testing Specifications

  4.1 Execution Standards

  This product strictly complies with the national standard GB/T 17514-2017 "Water Treatment Agents - Anionic and Non-ionic Polyacrylamide", and also meets the relevant chemical product quality control requirements of the Ministry of Environmental Protection and the Ministry of Industry and Information Technology. All indicators meet or exceed the national standard limits, ensuring that the product quality is stable and compliant.

  4.2 Core Quality Indicators (National Standards + Internal Control Standards)

  Testing items	National standard limit value	Enterprise internal control standards	Significance of Testing
  Solid content	≥88.0% (granule/powder)	≥90.0% (granule/powder)	The measurement of the content of active ingredients in the product directly affects the dosage and usage cost.
  Degree of hydrolysis	≤5.0%	≤3.0%	Ensure the non-ionic properties of the product and avoid performance degradation in acidic water bodies
  Water-insoluble substances	≤0.2%	≤0.1%	Prevent clogging of pipelines and filter cloths after dissolution, and ensure the normal operation of equipment
  Residual monomer	≤0.05%	≤0.03%	Control the residues of toxic and harmful substances to ensure safety in use
  Dissolution time	≤60min（25℃）	≤45min（25℃）	Improve ease of use, and reduce energy consumption and time costs for dissolution
  Particle size	Conforms to the agreed specifications	Particle size qualification rate ≥ 98%	Ensure the uniformity of dissolution and avoid caking and agglomeration
  pH value	6.0-9.0	7.0-8.0	Suitable for neutral and acidic water bodies, avoiding disrupting the pH balance of water bodies

  4.3 Detection Methods and Procedures

  4.3.1 Methods for Routine Testing Items

  • Solid content detection: The drying and weighing method is adopted. A quantitative sample is placed in an oven at 105℃ and dried to a constant weight. The ratio of the mass of the dried sample to the mass of the original sample is calculated.
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  • Detection of degree of hydrolysis: The acid-base titration method is used. The aqueous solution of the sample is titrated with a standard hydrochloric acid solution to calculate the carboxyl group content, and then the degree of hydrolysis is obtained.
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  • Detection of water-insoluble substances: The filtration and weighing method is adopted. After the sample is completely dissolved, it is filtered with quantitative filter paper. The filter residue is dried and weighed, and the proportion of insoluble substances is calculated.
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  • Residual monomer detection: High-performance liquid chromatography (HPLC) equipped with an ultraviolet detector is used for accurate quantitative detection of acrylamide monomer residues.
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  • Dissolution time detection: At room temperature, add water to a quantitative sample and stir, then record the time until it is completely dissolved without any particles;
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  • Molecular weight detection: Gel Permeation Chromatography (GPC) is adopted. Through calibration with standard samples, the molecular weight and distribution range of the sample are determined.

  • 4.3.2 Quality Control Process

    The product implements a four-level quality control system of "raw material sampling inspection - process monitoring - finished product full inspection - ex-factory re-inspection": detection of acrylamide monomer purity and impurity content before raw materials are put into storage; real-time monitoring of process parameters during production links such as polymerization, granulation, and drying; full inspection of quality indicators before finished products leave the factory; re-sampling inspection of core parameters before delivery, to ensure that each batch of products meets quality standards and prevent unqualified products from entering the market.

    V. Multi-scenario Applications and Practical Operation Plans of the Product

    5.1 Water Treatment Industry (Core Application Field)

    5.1.1 Treatment of Acidic Industrial Wastewater

    For acidic wastewater (pH 2-6) generated in industries such as chemical engineering, metallurgy, electroplating, and pickling, conventional anionic polyacrylamide is ineffective due to charge imbalance. Non-ionic polyacrylamide, with its electrically neutral property, can quickly flocculate impurities in the wastewater such as heavy metal hydroxides, suspended particles, and oil stains, forming dense flocs that settle rapidly to achieve solid-liquid separation. Recommended dosage: 0.5-3mg/L, dissolution concentration 0.1%-0.3%. Better results are achieved when used in conjunction with polyaluminum chloride, and the effluent turbidity can be reduced to below 5NTU, meeting the requirements for discharge standards.

    5.1.2 Municipal Sewage Pretreatment

    It is used for pretreatment before primary sedimentation tanks and biochemical tanks of municipal sewage. It can quickly remove suspended solids and colloidal impurities in sewage, reduce the load of subsequent biochemical treatment, improve the sedimentation efficiency of sedimentation tanks, and reduce sludge production. Recommended dosage: 0.3-1mg/L, dissolution concentration 0.1%, stirring speed controlled at 100-200r/min to avoid molecular chain breakage.

    5.1.3 Sludge Dewatering Treatment

    It is suitable for dewatering municipal sludge and industrial sludge, especially acidic sludge and sludge with high organic matter content. It can improve sludge dewaterability, make the sludge form large and dense flocs, which do not stick to the filter cloth or block the equipment, reduce the moisture content of the mud cake to below 60%, and enhance the sludge dewatering efficiency and drying effect. Recommended dosage: 5-20kg per ton of dry sludge, dissolution concentration 0.2%-0.5%. It is compatible with both plate and frame filter presses and belt filter presses.

    5.1.4 Pretreatment of Drinking Water

    It meets the standards for drinking water treatment additives and can be used for the pretreatment of raw water such as reservoir water and river water. It removes fine suspended particles, algae, and organic matter from water, reduces the turbidity of raw water, improves the subsequent filtration and disinfection effects, and ensures the safety of drinking water. Recommended dosage: 0.1-0.5mg/L, dissolution concentration 0.05%-0.1%. Strictly control the dosage to avoid residues.

    5.2 Petroleum Extraction Industry

    It is used as an additive for oilfield drilling mud, a profile control and water plugging agent, and an additive for tertiary oil recovery. It can increase the viscosity of drilling mud, stabilize mud performance, prevent wellbore collapse and mud loss; reduce drilling friction and protect drilling tools; in tertiary oil recovery, it can improve oil displacement efficiency and enhance crude oil recovery. At the same time, it can treat oilfield produced water, flocculate and remove oil stains and suspended solids in the water, and realize the recycling of produced water. The dosage is adjusted according to the drilling depth and water quality, and the general mud addition amount is 0.1%-0.5%.

    5.3 Paper Industry

    Used as a papermaking retention and drainage aid, paper strengthening agent, and pulp water clarifier, it can improve the retention rate of fillers and pigments, reduce the loss of raw materials, and lower the turbidity of white water; enhance the dry and wet strength of paper, improve the uniformity and smoothness of paper; clarify papermaking white water, realize the recycling of white water, and save water resources. Dosage: 0.05%-0.2% for retention and drainage aids, 0.1%-0.3% for strengthening agents.

    5.4 Metallurgical Mineral Processing Industry

    Used in the flotation and tailings treatment of metal ores such as zinc, copper, manganese, and iron. It can quickly flocculate fine mineral particles in tailings slurry, realize slurry concentration and dry discharge of tailings, improve metal recovery rate, reduce tailings wastewater discharge, and reduce environmental protection pressure. Dosage: 1-5mg/L for tailings slurry treatment, 0.5-1mg/L for flotation auxiliaries.

    5.5 Textile Dyeing and Printing Industry

    Used as a textile sizing agent and printing and dyeing wastewater treatment agent. When preparing textile sizing agents, it can improve the adhesiveness and permeability of the sizing agent, reduce the breakage rate and sizing drop rate, and make the fabric surface smooth; when treating acidic printing and dyeing wastewater, it can flocculate and remove dyes and suspended solids, reduce the chromaticity and COD of the wastewater, and improve the biodegradability of the wastewater. The addition amount of the sizing agent is 0.5%-1%, and the dosage for wastewater treatment is 1-4mg/L.

    5.6 Other Application Fields

    • Building materials industry: Used as a coating thickener and cement additive to improve the viscosity and stability of coatings, and enhance the construction performance of cement;
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    • Soil improvement: Used for desert control and slope soil consolidation, it can improve the soil aggregate structure, and enhance the water retention and erosion resistance of the soil.
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    • Food processing: Used as an agent for treating food processing wastewater and a clarifying aid for beverages. It meets food-grade safety standards and ensures compliance in production.
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    • Chemical industry: Used as a raw material for glues and adhesives, it has excellent thickening and bonding properties and is suitable for the production of various fine chemical products.

    
    

    

    VI. Product Usage Methods and Precautions

    6.1 Dissolution Operation Specifications

    1. Dissolving equipment: Use dissolving tanks made of plastic, glass fiber reinforced plastic, or stainless steel. Iron or copper containers are prohibited to avoid metal ions affecting product performance.
    2.  
    3. Water for dissolution: Use clean water or tap water. It is prohibited to use wastewater or sewage for dissolution. The water temperature should be controlled between 5-50℃. Excessively high water temperature will cause molecular chain degradation, while excessively low temperature will prolong the dissolution time.
    4.  
    5. Dissolution concentration: The conventional dissolution concentration is 0.1%-0.5%, which means adding 1-5kg of product to 1 ton of clean water. It is strictly forbidden to dissolve at a high concentration at one time to avoid agglomeration.
    6.  
    7. Stirring requirements: Use low-speed stirring with a stirring speed of 100-200r/min and a stirring time of 30-60 minutes until the product is completely dissolved, free of particles and agglomerates.
    8.  
    9. Storage requirements: The aqueous solution after dissolution should not be stored for a long time. It is recommended to use it up within 24 hours at room temperature to avoid degradation and failure of the solution. In a low-temperature environment, the storage time can be extended to 48 hours.

    10. 6.2 Dosing Operation Specifications

        1. Before dosing, the dosage needs to be adjusted according to water quality and process. A small-scale test should be conducted first to determine the optimal dosage to avoid excessive or insufficient dosing.
        2.  
        3. When adding, use a uniform and continuous dosing method, avoid intermittent large-dose dosing, and ensure that the agent is fully mixed with the water body.
        4.  
        5. When used in conjunction with inorganic flocculants, first add the inorganic flocculant, and then add this product after an interval of 5-10 minutes to give full play to the synergistic effect;
        6.  
        7. After dosing, observe the formation of flocs and the sedimentation effect, promptly adjust the dosage and stirring speed to ensure stable treatment results.

        8. 6.3 Safety Precautions

           • The product is non-toxic, but it is strictly prohibited to be eaten. When operating, please wear gloves and a mask to avoid inhaling the powder into the respiratory tract or contacting the skin and mucous membranes. If contact is accidental, simply rinse with plenty of water.
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           • During the dissolution process, avoid splashing of the solution. If it splashes into the eyes, rinse immediately with plenty of clean water. Seek medical attention promptly if the situation is serious.
           •  
           • The product is prone to absorbing moisture. The dissolution operation must be carried out in a dry and well-ventilated environment. Unused products should be sealed and stored in a timely manner.
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           • It is strictly prohibited to store or transport this product together with strong oxidants and strong acidic corrosives, so as to avoid chemical reactions of the product that may lead to performance failure.
           •  
           • Waste products and packaging containers must be disposed of in accordance with environmental protection requirements. Random disposal is prohibited to avoid environmental pollution.

           • 6.4 Common Problems and Solutions

             Common Problems	Causes	Solutions
             Dissolution agglomeration, clumping	Adding too quickly, insufficient stirring speed, too low water temperature	Add slowly and evenly, increase the stirring speed, and appropriately raise the water temperature
             Poor flocculation effect	Insufficient dosage, mismatched model, abnormal pH of water body	Adjust the dosage, replace with a suitable model, and adjust the pH of the water body
             Decrease in solution viscosity	Excessively high water temperature, excessively long storage time, and mixing with impurities	Control the dissolution water temperature, prepare and use immediately, and avoid the mixing of impurities
             Filter cloth clogging	Excessive water-insoluble substances, excessive dosage	Choose high-quality products and reasonably control the dosage

             VII. Product Packaging, Storage, Transportation, and Shelf Life

             7.1 Packaging Specifications

             Regular packaging adopts double-layer packaging. The inner layer is a food-grade polyethylene plastic bag, and the outer layer is a kraft paper woven bag/composite paper bag, which is sealed to prevent moisture and damage.

             
             

             • Granular and powdered products: 25kg per bag, and customized packaging of 10kg, 50kg, and 1000kg ton bags is also available.
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             • Colloidal products: 25kg/barrel, 50kg/barrel, packed in sealed plastic barrels.
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             The outer packaging clearly indicates information such as product name, model, specification, production date, shelf life, execution standard, manufacturer, and precautions, facilitating identification and management.

             7.2 Storage Requirements

             Store in a dry, well-ventilated, and cool warehouse with the ambient temperature controlled at 5-30℃ and relative humidity ≤75%; keep away from fire sources, heat sources, and direct sunlight, and avoid rain and moisture; the stacking height shall be ≤10 layers to prevent packaging damage and product caking caused by heavy pressure; store separately from strong acids, strong alkalis, and strong oxidants, and mixed storage is strictly prohibited.

             7.3 Transportation Requirements

             Road, railway, and waterway transportation can be adopted. During transportation, it should be covered to protect against rain, sunlight, and moisture; handled with care to avoid packaging damage; strictly prohibited from being transported together with toxic, harmful, strongly corrosive, and strongly oxidizing substances; and transportation vehicles should be kept clean with protective measures in place.

             7.4 Shelf Life

             Under the premise of meeting the storage and transportation requirements, the shelf life of granular and powdery products is 24 months, and that of colloidal products is 12 months; products that exceed the shelf life need to be re-inspected for quality indicators and can continue to be used only after passing the inspection.

             
             

             

             VIII. Product Customization Services and After-Sales Support

             8.1 Customized Services

             In response to customers' needs for special water quality, special processes, and special applications, we provide one-on-one customization services. We can adjust parameters such as molecular weight, degree of hydrolysis, solid content, particle size, and dissolution rate to develop exclusive models. At the same time, we offer services such as sample trials, small-scale tests, and pilot-scale tests, and issue suitable schemes free of charge to ensure that the products meet customers' actual needs and achieve the optimal use effect.

             8.2 After-sales Guarantee

             • Provide full-process technical guidance, including services such as product selection, dissolution and dosing, process optimization, and problem troubleshooting.
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             • Establish customer profiles, conduct regular follow-up visits, track product usage, and promptly solve usage problems.
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             • Unconditional return and exchange for product quality issues, assuming relevant losses, to protect customers' rights and interests.
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             • 24-hour online customer service, quickly responding to customer inquiries and after-sales needs, and providing efficient services.

             • IX. Summary

               Non-ionic polyacrylamide, with its core advantages of **electrical neutrality, anti-interference, multi-functionality, high purity, and easy solubility**, has broken through the application limitations of conventional ionic polyacrylamide. It has become the preferred product for acidic wastewater treatment, complex water quality treatment, and as a polymer additive in various industries. The product is produced in strict accordance with national standards, with stable and reliable quality, a wide range of applicable scenarios, convenient and safe usage. Coupled with comprehensive customization and after-sales support, it can fully meet the refined, efficient, and compliant needs of users in various industries. It is a high-quality functional additive that helps enterprises reduce costs, increase efficiency, meet environmental standards, and achieve green production.
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