YANGYa-hong,MA Peng-jin,YANGXing-feng,et al.Zeolite and Ultrasonic Wave for Enhancing Sludge Dewaterability and Aerobic Composting Efficiency[J].China Water & Wastewater,2024,40(9):84-90.
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Zeolite and Ultrasonic Wave for Enhancing Sludge Dewaterability and Aerobic Composting Efficiency

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第9期 Page: 84-90 Column: Date of publication: 2024-05-01
Author(s):
YANG　Ya-hong1; 2;  MA Peng-jin1; 2;  YANG　Xing-feng1;  WANG　Ya-jun1;  YU　Yang3;  YANG　Qi-yong4
（1. College of Civil Engineering， Lanzhou University of Technology， Lanzhou 730050， China； 2. Wenzhou Engineering Institute of Pump ＆ Value， Lanzhou University of Technology， Wenzhou 325105， China； 3. Shenzhen International Graduate School， Tsinghua University， Shenzhen 518055， China； 4. School of Chemistry and Chemical Engineering， Jiujiang University， Jiujiang 332005， China）
Keywords:
zeolite;  ultrasonic wave;  sludge;  dewatering performance;  aerobic composting;  condition
Abstract:
This paper combined ultrasonic wave cracked sludge and zeolite as the skeleton constructor to condition sludge, explored the dewatering performance and related mechanism, composted the dewatered sludge aerobically conditioned by three methods (ultrasonic wave, zeolite and ultrasonic wave combined with zeolite), and investigated the effect of different conditioning methods on the aerobic composting efficiency. The dewatering test results showed that the combined condition of ultrasonic wave and zeolite had a synergistic effect, which could significantly improve the sludge dewatering performance, and the first zeolite condition followed by ultrasonic wave showed a better performance. The composting test results showed that the three types of dewatered sludge could be composted normally. The analysis of the moisture content, organic matter, TOC, nitrogen, phosphorus, potassium, heavy metal content and seed germination index (GI) and other factors showed that the combined conditioning method accelerated the maturity of aerobic sludge composting, and thus the non-toxic products with the lowest heavy metal content and the highest GI were obtained. Therefore, the combined process demonstrated certain application prospect.
Last Update: 2024-05-01