光催化法处理制浆造纸废水探讨

Discussion on Treatment of Wastewater from Pulping and Papermaking Process by Light Catalysis

制浆造纸废水量大且浓度高,尤其以中段废水处理为主要任务。废水中含有大量可生化性差的纤维素、木素等成分。采用传统处理技术往往能耗、药耗和处理成本都很高,而且难以达到新的国家排放标准。新型光催化技术不仅能耗低、消耗少,对难生物降解的有机物氧化分解较彻底,是处理造纸废水的重要发展方向。

Wastewater from pulping and papermaking process is of high quantity and concentration, and the mid-stage wastewater is the main objective to treat. Plenty of non-biodegradable components, such as cellulose and lignin, are in the wastewater. A variety of traditional technologies usually require high energy or chemicals consumption, which causes high treatment cost while it is still difficult to attain the new discharge standards. With low energy use and little chemical consumptions, the new light catalytic technology decompose or oxidize organics very thoroughly, which plays an important role in developing way to treat papermaking wastewater.