The Research Of Acrylic Fiber Wastewater Advanced Oxidation Treatment Technology

Acrylic fiber is one of the earliest development of chemical fiber variety. Acrylic products have good fluffy, good heat preservation, soft, good weather resistance and anti-mildew, moth performance. The products used for civilian and military aspects.But its production process will produce large of wastewater. Acrylic wastewater pollutants composition complex, toxicity high, exists materials that is difficult to biological degradation, also has must biological suppression sexual components which caused the biodegradability of wastewater is low, such as sulfate root and sulfite root and so on. Wastewater also exists with oil and various molecular weight of polymer, these materials exist in the water in the form of colloid and suspended solids, and they are difficult to natural settlement.At present, the treatment of acrylic fiber wastewater have chemical method, biological method and physical-chemical process as well as other methods based on high-end technology. Most of them collaborate in the processing. In order to deal with Sinopec Anqing branch of the technical problems of acrylic fiber wastewater treatment, this article used coagulation, Fenton oxidation and catalytic wet oxidation technology for wastewater, using single factor optimization to obtain experimental optimum reaction parameters. Experiments show that using coagulation and Fenton oxidation and by catalytic wet oxidation process to deal with acrylic fiber wastewater, the effluent COD is 55.46mg/L, it can reach GB8978-1996 of the People's Republic of China integrated wastewater discharge standard level emissions standards (COD≤60mg/L). This research put preliminary study on the reaction kinetics of copper-based catalysts for catalytic wet air oxidation of acrylic fiber wastewater. Research shows that the reaction rate and organic matter concentration was a first-response relationship. In addition, the analysis shows catalytic wet air oxidation treatment costs lower than A/O process of biological nitrogen removal costs. Therefore, catalytic wet air oxidation technology of acrylic fiber wastewater treatment is a viable technology.