碱性聚合法处理氨基树脂生产废水工艺的研究

树脂材料的生产会产生含高浓度甲醛(>7000 mg/L)的工艺废水.该类的废水具有生物毒性,无法直接通过生物法进行处理.由于甲醛自身的性质,一般的化学方法,如Fenton法、臭氧法等也很难对其进行有效的降解.这就使得树脂废水的处理难度大大增加,且工艺步骤也相对复杂,工程建设与操作成本很高.针对这种情况,以江苏省某塑料有限公司氨基树脂实际生产废水作为目标研究对象,采用碱性聚合法,将水中高浓度甲醛转变为聚糖,一方面降低了废水在处理过程甲醛挥发至空气中造成二次污染得可能性,一方面处理后废水的可生化性显著提高.

Resin industrial wastewater always contained high concentration of formaldehyde. This type of effluent could not be bio-treated due to its bio-toxicity. Because of properties of formaldehyde, conventional method, such as Fenton, and ozoneoxidation, was difficult to degrade it effectively. And it led to high difficulty of wastewater treatment and expenses of construction and operation, and the conventional processes would become complex. For above problem, this study employed alkaline polymerization process to remove formaldehyde in practical amino-resin industrial wastewater which produced by a plastic factory of Jiangsu province. Via this process, formaldehyde would transform to glycerol, avoided formaldehyde emission to atmosphere by the wastewater treatment and promoted the biodegradability of the wastewater.