吉基尔生物污水处理厂废污泥的调理

M. Zohorović, Abdel Đozić, Lj. Bojanović, V. Stuhli, Adisa Halilčević Kovač, Edisa Papraćanin, Emra Halilović, Jasmin Pandurović
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引用次数: 0

摘要

废水处理过程中产生的污泥必须以适当的方式处理,从而以环保的方式处置。污泥的高含水率是污泥高效利用的最大障碍,因此开发加速污泥脱水过程的方法显得尤为重要。本研究以GIKIL厂氨酚废水净化过程中产生的废污泥为研究对象。采用商用絮凝剂(0.1%溶液)与叶蜡石、高岭土和碎纸板混合对污泥进行调理。根据早期的研究,添加合适的絮凝剂后,废污泥的体积比初始量减少了5倍以上,留下了大量的分离水,可以返回到工艺中。结果表明,投加量为0.8%的商业絮凝剂效果最佳(污泥体积减少78.8%)。与叶蜡石和高岭土混合使用的絮凝剂回收率较低(78%),而与废纸板混合使用的絮凝剂回收率较低(64.4%)。在废污泥中添加絮凝剂可降低比过滤阻力(1.15 × 107 s2/g)。絮凝剂/高岭土(0.8x107 s2/g)和絮凝剂/纸板(1.09x107 s2/g)样品的比电阻也有所降低。与未添加添加剂的污泥相比,污泥调节也导致新生儿中悬浮固体的减少。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Conditioning of waste sludge from biological wastewater treatment plant from gikil
Sludge generated in wastewater treatment processes must be treated in an adequate manner, and therefore disposed of in an environmentally friendly manner. The biggest obstacle to the efficient use of sludge is the high water content, therefore the development of methods to accelerate the sludge dewatering process is particularly important. For the purposes of the research, the waste sludge created in the process of purifying ammoniaphenol wastewater in the GIKIL factory was used. Sludge conditioning was performed by adding a commercial flocculant (0.1 % solution) in combination with pyrophyllite, kaolin clay and shredded cardboard. According to earlier research, the volume of waste sludge with the addition of a suitable flocculant could be reduced by more than 5 times compared to the initial amount, leaving behind a large amount of separated water that can be returned to the process. The results show that the addition of commercial flocculant in the amount of 0.8 % gives the best results (reduction of sludge volume by 78.8 %). A lower percentage was found in samples with a mixture of flocculants with pyrophyllite (78 %) and kaolin (77.6 %), while the combination of flocculants with waste cardboard was ineffective (64.4 %). Addition of flocculant to waste sludge resulted in a decrease in specific filtration resistance (1.15x107 s2/g). A decrease in specific resistance was also observed in flocculant/kaolin clay (0.8x107 s2/g) and flocculant/cardboard (1.09x107 s2/g) samples. Sludge conditioning also resulted in a reduction of suspended solids in the neonate compared to settled raw sludge without additives.
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