Enhancing Sludge Dewatering Process by Using Green and Environmental Wastes | ||
| Suez Canal Engineering, Energy and Environmental Science | ||
| Article 2, Volume 1, Issue 1, January and February 2023, Pages 8-12 PDF (381.22 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/sceee.2023.279484 | ||
| Authors | ||
| Alaa Rabea* 1; Abeer El Shahawy1; Mohamed A Salem2; Ibrahim El Kersh1 | ||
| 1Department Of Civil Engineering, Faculty of Engineering, Suez Canal University, Ismailia, Egypt | ||
| 2General Manager, Serabium Wastewater Treatment Plant, Ismailia, Egypt | ||
| Abstract | ||
| Sludge dewatering is challenging due to sludge's highly compressible nature and the presence of colloidal particles. The capital, operating, and transportation expenses of wastewater management can be decreased by decreasing the amount of water content in the sludge. In the present study, the sludge samples were taken from municipal WWTP, with a moisture content of 98% and specific resistance to filtration (SRF) 1.2265E+16 m/kg. The samples were chemically conditioned with moringa Olivera at different dosages and physically conditioned with (rice husk and wheat straw) to improve sludge dewatering. The experimental work included evaluating the treated sludge's dewatering ability SRF. The results showed that the chemical coagulation affected the SRF of the sludge; the lowest values were 3.43296E+15 m/kg and time to filtrate (TTF) was 326.6 sec. However, when the rice husk and wheat straw were combined with chemical conditioning, noticeable improvements were noted in the sludge dewatering ability compared to the coagulation conditioning alone. The physical conditioners acted as skeleton builders during this pressure dewatering. The lowest SRF. were 1.62497E+15m/kg and 1.58377E+15m/kg for wheat straw and rice husk, respectively. Hence, the study recommends using rice husk or wheat straw for conditioning. | ||
| Keywords | ||
| sludge dewatering; filter aid; specific resistance to filtration; time to filter; chemical conditioning; physical conditioning; rice husk | ||
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