粉煤灰处理制浆中段废水的研究

Study on the Treatment of the Pulping Middle-stage Wastewater by Flyash

利用粉煤灰处理制浆中段废水,研究了粉煤灰的量、废水的pH和搅拌时间对制浆中段废水色度和CODcr去除效果。结果表明:当粉煤灰的量为40g/L,pH为7-9,搅拌180m in时,色度去除效果较好,同时CODcr的去除率可达80.80%以上。

Using flyash treated pulping middle-stage wastewater, the amount of flyash, pH of wastewater, time of stirring affecting on the color and the removal efficiency of CODe, were studied. These results could be attained that the removal efficiency of CODcr, was 80. 80% and color removal was better when the amount of flyash was 40g/L, pH 7-9, stirring time 180min.