The Application of Nonionic Polyacrylamide
Non-ionic polyacrylamide plays a very important role in water treatment technology and is widely used in many fields. It can be used not only for water supply and wastewater treatment, but also for circulating water treatment. In addition to turbidity reduction and decolorization, it can also remove macromolecular substances, viruses, bacteria, microbes, tar, oil and other grease and other organic substances contained in wastewater. Flocculant formation is fast and thick, high activity, high precipitation and precipitation. Therefore, the purification effect of high turbidity water is particularly obvious. Suitable for wide PH range, low PH in raw water, so no corrosion effect on pipeline equipment. As a flocculant it is mainly used in industrial solid-liquid separation process, including settlement, clarification, concentration and sludge dewatering technology, application of the main industries are: urban sewage treatment, papermaking industry, food processing, petrochemical industry, metallurgical industry, mineral processing industry, dyeing industry and sugar industry and all kinds of industrial wastewater treatment. Used in urban sewage and meat, poultry, food processing wastewater treatment process of sludge precipitation and sludge dewatering by its organic colloid electrical group of sludge negative charge neutralization and excellent polymer bridging coagulation function, prompting colloid particles gathered into large pieces of floc, separated from the slurry. The effect is obvious and the throw amount is small.
In papermaking industry, it can be used as dry strength agent, retention agent and filter agent, which can greatly improve the quality of paper, save cost and improve the production capacity of paper mills. It can directly react with inorganic salt ions, fiber, and other organic polymers electrostatic bridge so as to enhance the physical strength of paper, and reduce the loss of fiber or filler to accelerate the filtering, enhancement and retention, leaching effect, can also be used in water treatment, at the same time, in the deinking process can a obvious flocculation effect.
In mining and coal preparation industries, it can be used as a clarifier for mine wastewater and coal washing wastewater. It can also be used for the treatment of dyeing wastewater, leather wastewater and oily wastewater to remove the turbidity and decolor so as to meet the discharge standards.
Keywords: Nonionic Polyacrylamide, Polyacrylamide, PAM
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