Across numerous industries including wastewater treatment, papermaking, and oil extraction,
polyacrylamide has become an indispensable “star chemical” due to its outstanding performance. However, during routine use, users invariably encounter a variety of issues. Today, we summarise common problems with polyacrylamide to help you tackle usage challenges with ease! Dissolving problem 1.Many users have reported that the dissolution rate is slow, and the dissolution time of
polyacrylamide is relatively long. This is mainly because its molecular chains are long and intertwined with each other. It is recommended to use an appropriate stirring speed, generally controlled at 60-200 revolutions per minute, to avoid molecular chain breakage caused by high-speed stirring and affect the effectiveness of use; At the same time, use clean tap water at room temperature for dissolution. High or low water temperature can affect the dissolution rate, and a water temperature of around 25 ℃ is more suitable. 2. After dissolution, clumping occurs. During the dissolution process, clumping may occur due to improper dosing methods, where the medication is directly poured into water without uniform dispersion. The correct approach is to use a slow and uniform addition method, slowly adding the medication along the vortex formed by stirring, allowing the medication to quickly disperse under the impact of water flow, thereby avoiding clumping. Usage effect issue 1. Poor flocculation effect. In sewage treatment, sometimes after using
polyacrylamide, the flocculation effect is not ideal. This may be an error in the selection of reagents, as different types of polyacrylamide (anionic, cationic, non-ionic) are suitable for different water quality and treatment scenarios. For example, anionic polyacrylamide may be more effective in treating acidic wastewater; Cationic polyacrylamide has more advantages in treating sludge dewatering. In addition, the dosage of the agent is also crucial. Insufficient dosage cannot fully exert the coagulation effect; Excessive addition may lead to the re stabilization of colloidal particles, which in turn reduces the flocculation effect. Therefore, it is necessary to determine the optimal dosage through beaker experiments. 2. If the water quality is still turbid after treatment, in addition to considering the selection and dosage of chemicals, it may also be due to insufficient reaction time or inappropriate mixing intensity. Extend the reaction time appropriately to allow the reagent to fully react with the pollutant; At the same time, adjust the stirring intensity. In the early stage of the reaction, increase the stirring speed appropriately to promote mixing, and in the later stage, reduce the stirring speed to avoid alum flower breakage.
Storage issues 1. Storage period and deterioration of
polyacrylamide dry powder. In a dry, cool, and ventilated environment, the storage period is generally around 2 years. But if the storage environment is humid, the medicine is prone to moisture absorption and clumping, resulting in a decrease in effective ingredients and affecting the effectiveness of use. So, it is necessary to seal and store the medicine to avoid contact with humid air. 2. Different batches may have different effects, even for the same model of polyacrylamide, there may be differences in usage effects between different batches. This is because subtle changes in factors such as raw material purity and reaction conditions during the production process may affect product performance. It is recommended to conduct small-scale experiments before using new batches of drugs to ensure that the expected treatment effect is achieved. Safety and environmental issues 1. Is it harmful to the human body?
Polyacrylamide itself is basically non-toxic, but residual monomer acrylamide is toxic. However, under normal use, as long as there is no direct contact with the skin, mouth, etc., the harm to the human body is relatively small. During the operation, it is recommended to wear protective equipment such as gloves and masks to avoid inhaling dust. 2. After use, the sludge or residue treated with
polyacrylamide needs to be properly treated according to specific circumstances. If it belongs to hazardous waste, it must be disposed of in accordance with relevant environmental regulations to prevent secondary pollution to the environment. Although
polyacrylamide has powerful functions, it requires us to pay attention to details and solve various problems correctly in daily use. I hope this article can provide you with help when using
polyacrylamide!
The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business!
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