制浆造纸废水絮凝/Fenton深度处理工程应用的技术经济性分析

Technical and economic analysis on flocculation/Fenton process for advanced treatment of pulping and papermaking wastewater

根据某大型造纸企业废水处理厂深度处理工艺的运行数据，评价了“絮凝／Fenton”深度处理工艺对制浆造纸废水有机物的处理效果，同时分析了该工艺的运行费用。结果表明：制浆造纸废水二级出水经该工艺处理后，出水COD最优水平值（Technology Achievable Limit，TAL-3．84％）可达43mg／l，出水COD保证值（TAL-95％）为56mg／l，保证值可以满足《山东省海河流域水污染物综合排放标准》的排水要求。COD去除率最优值（TAL-3．84％）为88．3％，去除率保证值（TAL-95％）为83．7％。COD去除率稳定，适合作为制浆造纸废水处理的末端保障工艺。该深度处理工艺的平均成本为1．46元／m^3，成本主要分布在1．21～1．71元／m^3范围内。运行成本中，药剂贳调所占比例最大，约为60％。

The treatment performance and cost of a ＂Fenton/flocculation＂ process were analyzed based on the operation data ofa wastewater treatment plant of a large pulp and paper enterprise. The results show that the optimal level（TAL-3.84%） of the effluent COD is 43mg/l, and the guaranteed value（TAL-95%） 56 mg/l when treated by flocculation/Fenton process, which can meet the integrated water pollutant discharge standard for Haihe river basin, in Shandong Province. The optimal value （TAL-3.84%） and the guaranteed value （TAL-95%） of COD removal rate were 88.3% and 83.7%, respectively. Average cost of the advanced process was 1.46 yuan/m^3, and the cost ranged from 1.21-1.71yuan/m^3, with the cost of chemicals accounting for 60%.