Rheology Measurements for Online Monitoring of Solids in Activated Sludge Reactors of Municipal Wastewater Treatment Plant

被引：7
|
作者：
Piani, Luciano [1 ]
Rizzardini, Claudia Bruna [1 ]
Papo, Adriano [1 ]
Goi, Daniele [1 ]
机构：
[1] Univ Udine, Dipartimento Chim Fis & Ambiente, I-33100 Udine, Italy
来源：
SCIENTIFIC WORLD JOURNAL | 2014年
关键词：
CONCENTRATED DISPERSE SYSTEMS; SEWAGE SLUDGES; OPTIMIZATION;
D O I：
10.1155/2014/590961
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Rheological behaviour of recycled sludge from a secondary clarifier of a municipal wastewater treatment plant was studied by using the rate controlled coaxial cylinder viscometer Rotovisko-Haake 20, system M5-osc., measuring device NV. The tests (hysteresis cycles) were performed under continuous flow conditions and following an ad hoc measurement protocol. Sludge shear stress versus shear rate curves were fitted very satisfactorily by rheological models. An experimental equation correlating the solid concentration of sludge to relative viscosity and fitting satisfactorily flow curves at different Total Suspended Solids (TTS%) was obtained. Application of the empirical correlation should allow the monitoring of the proper functioning of a wastewater treatment plant measuring viscosity of sludge.
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页数：6
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