活性炭协同表面活性剂降低污泥含水率的探讨
Exploration on the Synergistic Effect of Activated Carbon and Surfactants on Reducing Sludge Water Content

本文利用活性炭吸附作用和表面活性剂的亲水基团，探讨活性炭与表面活性剂协同调理对城镇污水处理厂活性污泥脱水性能的影响。实验表明活性炭和表面活性剂的协同作用对污泥脱水具有显著增效作用，相对没有调理剂下，平均能够降低十个百分点。通过对比不同投加顺序和投加量的活性炭与表面活性剂(选择SDS和SDBS)对污泥含水率的降低效果，发现先加入表面活性剂后加入活性炭的顺序降低的程度更高，平均降低六个百分点。实验数据指出表面活性剂的投加量不宜多。当活性炭投加量为5%时，SDS投加量选择为1%时，污泥的脱水效果达到最佳，正序下含水率降低至82.26% (添加CPAM后为59.95%)、反序下降至76.29% (添加CPAM后为58.59%)。
In this paper, the adsorption of activated carbon and hydrophilic group of surfactant were used to investigate the effect of synergistic conditioning of activated carbon and surfactant on the dewatering performance of activated sludge from urban sewage treatment plant. The experimental results showed that the synergistic effect of activated carbon and surfactant on sludge dewatering had a significant synergistic effect, where the water content could be reduced by 10 percentage points on average compared with that without conditioner. By comparing the effect of different adding order and dosage of activated carbon and surfactant (SDS and SDBS were selected) on the reduction of sludge water content, it was found that the order of adding surfactant first and then adding activated carbon had a higher reduction degree, with an average decrease of 6 percentage points for water content. The experimental data indicated that the dosage of surfactant should not be large. When the dosage of activated carbon was 5% and the dosage of SDS was 1%, the dewatering effect of the sludge reached the best, and the water content of the sludge was reduced to 82.26% in the positive sequence (59.95% after adding CPAM) and 76.29% in the reverse sequence (58.59% after adding CPAM).