新型反渗透阻垢剂的合成及阻垢性能研究

Synthesis and scale-inhibition performance of a novel scale-inhibitor for reverse osmosis

以水做溶剂,采用过氧化物类引发剂合成了丙烯酸(AA)和丙烯酰胺(AM)共聚物(AA/AM)。探讨了共聚物作为反渗透水处理药剂,对CaSO4的阻垢率与引发剂用量、合成温度、单体配比、共聚物黏度以及投加量之间的关系。实验结果表明,合成共聚物时的引发剂用量、合成温度、单体配比均对共聚物的阻垢率有较大影响,三者均存在最佳值。合成的共聚物在反渗透水处理系统中对CaSO4垢有优异的阻垢性能,在高钙离子浓度下,药剂用量仅为8 mg/L时,对CaSO4的阻垢率达91%。此共聚物有优异的阻垢性能,能够广泛应用于反渗透水处理系统。

Acrylic aeid-aerylamide eopolymers have been synthesized using peroxide as initiator in water as solvent. The effects of varying the amount of initiator, synthesis temperature, ratio of acrylic acid to aerylamide, and the viscosity and dosage of eopolymers on the inhibition of CaSO4 scale deposition were studied. The eopolymers show good scale inhibiting performance against CaSO4 deposition, with a maximum scale inhibition ratio of 91% at a dosage of 8 mg/L at high calcium ion concentrations. The eopolymers are potential seale-inhibitors for reverse osmosis （RO） systems.