Alum çamurlarının ikili şartlandırılması

Bu çalışmada ikili polieletrolit (PE) şartlandırmayla alum çamurlarının susuzlaşabilirliği araştırılmıştır. Farklı PE dozajlarının şartlandırmaya etkileri araştırılmıştır İyi bir şartlandırma ve dolayısıyla susuzlaşabilirliğin elde edilebilmesi için optimum şartlandırıcı ve şartlandırıcı dozu belirlenmiştir En uygun şartlandırıcı olarak katyonik (Hyd. CP 509), anyonik(Hyd.7170) ve noniyonik (Hyd.8000) PE’ler seçilerek deneyler yürütülmüştür. Çamur numuneleri değişik karıştırma koşulları altında tekli ve ikili şartlandırmaya tabi tutularak susuzlaşabilirlik özellikleri birbirleri ile karşılaştırılmıştır. Çamurun yumak direnci ve zeta potansiyeli ölçülerek susuzlaşabilirlik üzerine etkileri araştırılmıştır. İkili şartlandırma deneylerinde şu sonuçlara ulaşılmıştır. İkili şartlandırmada tekli şartlandırmaya göre daha iyi susuzlaşabilirlik sağlanmakta, daha az PE ilavesi ile minimum KES değerine ulaşılmakta ve daha güçlü yumaklar elde edilmektedir.

Dual polymer conditioning of alum sludges

In this study, alum sludge dewatering is experimented by dual conditioning. The effects of the different polyelectrolytes dosages on conditioning are researced Optimum conditioner and conditioner dosages have been determined in order to obtain dewatering and a better conditioning by the experiments made in this research. Hyd. CP 509(cationic), Hyd. 7170(anionic) and Hyd. 8000(nonionic) type polyelectrolytes are used in this study as more appropriate conditioners. Dewatering properties of single and dual conditioning are measured and compared each other. Floc strength and zeta potantiel are measured and their effects on dewatering are researced. The results in dual conditioning experiments are as follows: Dual conditioning provides a better dewatering compared to single conditioning. Minimum CST values are reached by adding less polyelectrolyte in dual conditioning. Floc strength is better in dual conditioning. It has been observed on dual conditioning experiments that dewatering obtained by adding cationic polyelectrolyte on anionic polyelectrolyte is better than adding anionic polyelectrolyte on cationic polyelectrolyte. It has been observed that dewatering which is obtained in dual conditioning experiments by adding nonionic polyelectrolyte on cationic polyelectrolyte is better than dewatering obtained by adding cationic polyelectrolyte on nonionic polyelectrolyte.

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