Study on the Deep-Treatment with Microelectrolysis-fenton Method of Middle-Stage Wastewater of Poplar PRC-APMP Pulping

To solve the problems of the papermaking wastewater new discharge standards and reuse The microelectrolysis-fenton process has been applied to the advanced treatment of middle-stage wastewater with of poplar PRC-APMP Pulping. The effects of operational conditions such as Fe/C, pH, iron quantity, H₂O₂ dosage and reaction time, have been experimental studied, subsequently the best handles technological conditions have been gained. The experimental results show that when pH is 4.0, H₂O₂ dosage is 15mmol/L, Fe/C ratio 1.5, iron quantity10mg/L and reaction time 40min can make the treating effect best, the removal efficiencies of color and CODcr are 89.6% and 75.4% respectively The quality of the final water not only can completely satisfies the new discharge standard (GB3544-2008), but also the recycle requirements.