Evaluation of sludge reduction and carbon source recovery from excess sludge by the advanced Sludge reduction, Inorganic solids separation, Phosphorus recovery, and Enhanced nutrient Removal (SIPER) wastewater treatment process

Anaerobic digested sludge: a new supplementary nutrient source for ethanol production

“…However, when thermal process is combined by alkaline treatment, these negative effects are reduced considerably, making the ALTH a second candidate for the highest ethanol yield in comparison with the stand-alone AL. This result is in accordance with other findings, suggesting AL and ALTH being the best ones for solubilizing the nutrients of sludge (Yan et al 2013).…”

Investigation of microbial community structure in an advanced activated sludge side-stream reactor process with alkaline treatment

“…1, and the operating parameters for each reactor unit were presented in Yan et al (2013). The settled activated sludge was treated with alkali in the SSR, then alkaline-treated sludge as an additional C-source (pH was 10.12 ± 0.28) was recycled to the BNR system and used to enhance nitrogen and phosphorus removal.…”

“…The pilot-scale system (10 m 3 d À1 ) was built in a full-scale wastewater treatment plant in Chongqing, China (5 Â 10 4 m 3 d À1 ). The process showed excellent sludge reduction potential and effluent quality, and lysis-cryptic growth of cells was successfully employed for sludge reduction in this process (Yan et al, 2013). The performance and stability of biological treatment system are thought to be intimately related to the microbial community structure and diversity (Gerardi, 2006); therefore, the microbial community is bound to play a dominant role in sludge reduction and nutrient removal in the SIPER process.…”

“…1), an advanced activated sludge side-stream reactor process using alkaline treatment for sludge reduction, was developed by Yan et al (2013). The pilot-scale system (10 m 3 d À1 ) was built in a full-scale wastewater treatment plant in Chongqing, China (5 Â 10 4 m 3 d À1 ).…”

Deactivation of the Activated Sludge as a Result of Mechanical Disintegration

“…Wśród pozytywnych aspektów wymienia się przed wszystkim: zwięk-szenie efektywności procesu fermentacji metanowej [Petkovšek et al 2015], zmniejszenie obję-tości powstających osadów ściekowych [Yan et al 2013], uzyskanie lepszych efektów odwadniania osadów przefermentowanych [Huan et al 2009], a także intensyfikację usuwania ze ście-ków związków biogennych [Meng et al 2013, Żubrowska-Sudoł andWalczak 2015].W wyniku procesu dezintegracji dochodzi do zniszczenia kłaczkowatej struktury osadu, rozbicia zewnątrzkomórkowych substancji polimerycznych oraz uszkodzenia komórek i ich lizy, co skutkuje zmianami właściwości fizyko-che- …”