Surfactants - Water treatment chemicals - paa
How does PAA affect the stability of water quality in water treatment?
PAA (polyacrylic acid) in water treatment on the stability of water quality is mainly reflected in the following aspects:Scale inhibition: PAA can form stable complexes with calcium and magnesium ions in water, preventing them from forming insoluble salts with carbonate and sulfate, thus avoiding the formation of deposits on the surfaces of pipelines, heat exchangers and other equipment, and maintaining the stability of water quality.Dispersing effect: PAA has good dispersing performance, which can disperse the tiny particles or suspended matter already formed in the water and prevent them from gathering into large particles, reducing the risk of deposition and scaling.Stabilizes pH: PAA's acidic properties regulate the pH of the water, helping to maintain the pH balance in the water treatment system, which is important for preventing corrosion and biological growth.Reduces microbial growth: By inhibiting microbial attachment and growth on pipe surfaces, PAA helps to reduce the formation of biofilms, which improves water quality stability.Improve filtration performance: During water treatment, PAA can improve the filtration performance of filter media, reduce filtration resistance and extend filtration cycles.Reduces corrosion: By controlling corrosive ions in water, PAA helps reduce corrosion of metal pipes and equipment and extends equipment life.Improve water reusability: The use of PAA can improve the reusability of industrial water and reduce the need for fresh water, which is important for water conservation and sustainable development.Environmentally friendly: PAA is a compound with good biodegradability and low environmental impact, and its use can reduce the negative impact on the environment.In conclusion, PAA, through its chemical properties and mechanism of action, can effectively improve the stability of water quality in the water treatment system and reduce problems such as scale, corrosion and microbial growth, thus ensuring the normal operation of the water treatment system and the safety of water quality.Learn about PAA's product information, performance, parameters can be referred to: https://www.kairuiwater.com/paa.htm
What are the specific applications of PAA in water treatment?
PAA (polyacrylic acid) is widely used in the field of water treatment. Here are some specific application examples:Circulating cooling water systa: PAA, as a commonly used scale inhibitor and dispersant, is widely used in circulating cooling water systas such as power plants, chaical plants, fertilizer plants, refineries, and air conditioning systas to prevent the precipitation of microcrystals or sediment such as calcium carbonate and calcium sulfate, achieving the purpose of scale inhibition.Paper industry: PAA can be used as a dispersant in the paper making process to improve the dispersion of fibers and fillers in pulp, thereby improving the quality and production efficiency of paper.Textile and printing and dyeing industry: PAA can serve as a dispersant in the textile and printing and dyeing process, helping to evenly disperse dyes and improve the uniformity and depth of dyeing.Ceramic industry: In ceramic production, PAA can prevent the agglomeration of raw materials during the forming process, improve the quality and production efficiency of ceramic products.Coating industry: PAA, as a dispersant in coatings, can improve the dispersibility of pigments, giving coatings better coating performance and durability.Research on water treatment technology: In advanced oxidation water treatment technology, PAA is used in the activation process, which combines with non-metallic carbon materials to generate a non free radical systa, achieving effective raoval of pollutants in water.Enhancaent of ultrafiltration performance: In the process of algae water treatment, PAA, UV/PAA, and ultrasonic/PAA pre oxidation are applied to improve ultrafiltration performance by degrading large organic molecules and reducing mabrane fouling.Concrete water reducer: In the construction industry, PAA can also be used as a concrete water reducer to improve the fluidity and strength of concrete.These applications daonstrate the multifunctionality and efficiency of PAA in water treatment and related industrial processes. When in use, the concentration and formula of PAA are usually adjusted according to specific water quality and equipment materials.learn more:https://www.krwater.com/03-PAA.htm
Polyacrylic acid (PAA)CAS No.: 9003-01-4Performance and Application[PAA][2] is a non-toxic substance that is easily soluble in water [Polyacrylic][3] can operate under alkaline and moderate concentration conditions without scaling. It can disperse microcrystals or sediment of salts such as calcium carbonate and calcium sulfate in water, prevent precipitation, and achieve the purpose of scale inhibition. As a commonly used dispersant, it is widely used as a scale inhibitor and dispersant in the circulating cooling water systas of power plants, chaical plants, fertilizer plants, refineries, and air conditioning systas. It is also used in industries such as papermaking, textiles, printing and dyeing, ceramics, coatings, and building materials. Technical indicators Compliant with standard: GB/T 10533-2014Appearance: Colorless to pale yellow transparent liquidSolid content: There are different grades, which are ≥ 30.0%, ≥ 40.0%, ≥ 50.0%Free monomer (calculated as AA): ≤ 0.50% (for grades with ≥ 30.0% and ≥ 40.0% solid content), ≤ 1.0% (for grades with ≥ 50.0% solid content)Density (20 ℃): The densities of different grades are ≥ 1.09, ≥ 1.12, and ≥ 1.20 g/cm ³, respectivelyPH value (1% aqueous solution): 2.5-4.5Ultimate viscosity (30 ℃): For grades with the highest solid content, 0.06-0.12 dl/gCustomized servicesThe company can customize products with different molecular weights and solid contents according to customer needs, such as 45% and 60% polyacrylic acid.usage methodPAA is usually used in combination with other water treatment agents, and the specific formula and dosage need to be determined through experiments based on the on-site water quality and equipment materials.If used alone, the general concentration is 1-15mg/L.When used in other industries, such as concrete water reducers, printing and dyeing, the dosage should be determined based on experiments.Packaging and StoragePackaged in plastic drums, each weighing 25kg or 200kg, or determined according to user needs.It should be stored indoors in a cool and shady place, with a storage period of twelve months.safety protectionPAA is weakly acidic, and appropriate labor protection equipment should be worn during operation to avoid contact with skin and eyes.Immediately rinse with plenty of water after contact.learn more:https://www.kairuiwater.com/paa.htm
Polyacrylic acid (PAA) is a high molecular weight polymer whose structure is formed by connecting multiple acrylic monomers through polymerization reactions. Each monomer unit contains a carboxylic acid group, which enables PAA to form a polyelectrolyte in aqueous solution. The chemical structure of PAA endows it with multiple functions, including serving as a dispersant, thickener, flocculant, superabsorbent, and ion exchange resin.The carboxyl groups of PAA can undergo ionization in aqueous solution, endowing the polymer with high negative charge density. This property makes PAA have good solubility and expansibility in water, forming viscous solution or hydrogel. The hydrogel form of PAA is widely used in sanitary products (such as diapers) because of its excellent water absorption and water retention.In addition to its applications in water treatment and personal care products, PAA can also be used as a dispersing medium for abrasives in chemical mechanical polishing (CMP) processes in the electronics industry. In addition, the low toxicity of PAA makes it suitable as a food additive.The synthesis of PAA is usually achieved through free radical polymerization, by polymerizing acrylic acid or its sodium salt. In industry, PAA products with different molecular weights and molecular weight distributions can be obtained by controlling the polymerization conditions. The molecular structure of PAA can adjust its hydrogel properties through covalent crosslinking, physical crosslinking or the formation of hydrogen bonds.Derivatives of PAA, such as sodium polyacrylate, are used as thickeners, texture enhancers, film-forming agents, and emulsifying stabilizers in cosmetics and skin care products. The pH sensitivity of PAA makes it very useful in drug delivery systems, especially in tumor therapy, where the acidic environment of tumor cells can be utilized to achieve controlled drug release.Structurally, the repeating units of PAA are homopolymers of acrylic acid with the molecular formula (C3H4O2) x, where x represents the number of repeating units. Because PAA contains a large number of carboxyl groups, which are sensitive to pH and ionic strength, the expansion rate of PAA hydrogel will be affected by solution pH and ionic strength. PAA hydrogels also have potential in biomedical applications due to their intelligent response characteristics.learn more:https://www.kairuiwater.com/paa.htm