炭材料强化污泥电脱水效果及同步燃料化处理

为研究炭材料调理对污泥电脱水性能及泥饼可燃性的影响，使用改性前后的活性炭和石墨对污泥进行预调理，对调理后的污泥进行电脱水实验，深入解析了炭材料调理前后污泥电脱水行为及泥饼可燃性的变化.研究表明：经炭材料调理后的污泥，阴极电脱水速率提升，相较于其他3种炭材料，石墨调理后的阴极电脱水速率提升最为明显，石墨的投加量5% TSS时，阴极平均脱水速率从0.074g/L上升到0.095g/L.炭材料可以提高污泥体系的电导性和污泥絮体的电泳淌度，使得阴极泥饼孔容有上升的趋势，阴极泥饼孔容从未投加炭材料时的0.1147cm³/g增加到AC-0、AC-1、AC-5、石墨的投加量为20% TSS时的0.119、0.122、0.146、0.157cm³/g；此外，炭材料加入后阴阳两极滤液中溶解有机物DOM和蛋白质组分浓度降低，可以缓解滤布堵塞；污泥电脱水过程中经炭材料调理后可以降低脱离每单位水所需要的能耗，未投加炭材料时去除每单位水所需能耗为6.75kW·h/kg_去除水，而当AC-0、AC-1、AC-5、石墨的投加量为20% TSS时，能耗分别降低到5.64、5.22、5.20、5.11kW·h/kg_去除水，且泥饼含水率从未投加炭材料时的58%降低至45%，固炭量增加，提高了泥饼的热值和可持续燃烧时间，当石墨的投加量为20% g/gTSS时，泥饼热值提高了17%.有利于后续焚烧资源化利用.

Carbon material reinforced sludge electric-dewatering synchronous fuel treatment

In order to study the influence of carbon material conditioning on sludge electrical dewatering performance and combustibility of sludge cake, sludge was pre-conditioned by using activated carbon and graphite, and analyzed the characteristics of sludge and dissolved organic matter (DOM) at both electrodes. The results showed that the electro-dewatering rate at cathode was increased after treated with carbon materials, and the promoted effect of graphite was more than the other three carbon materials. The average dehydration rate of the cathode increased from 0.074g/L to 0.095g/L when graphite was added in a small dosage of 5%TSS. Carbon materials could enhanced the conductivity of sludge system and electrophoretic mobility of sludge floc, which result in the porosity of sludge cake at cathode was increased. The pore volume of cathode mud cake was 0.1147cm³/g when the dosage of carbon materials was 0%TSS,but the pore volume of cathode mud cake were was 0.119、0.122、0.146、0.157cm³/g when the amount of AC-0、AC-1、AC-5、graphite was 20% TSS. In addition, the DOM concentration and protein substances in filtrate of both electrodes were decreased after treated with carbon materials, it can relieve the block of filter cloth; the energy consumption per mass of water removed can be reduced after being treated with carbon materials, The energy consumption required to remove water per mass of water was 6.75kW·h/kg, when activated carbon was not added separately, and when the dosage of AC-0、AC-1、AC-5、graphite were 20% TSS, the energy consumption decreased to 5.64、5.22、5.20、5.11kW·h/kg, and the water content of mud cake decreased from 58% to 45%, the calorific value and sustainable combustion time of sludge cake treated with carbon materials were enhanced, when the amount of graphite was 20%TSS, the calorific value of sludge cake increased by 17%. which can beneficial to the subsequent utilization of incineration.