1. Mass release: a) total suspended solid and chemical oxygen demand, and b) phosphorous c) nitrogen components 260 Based on Figure 5.c, NO 3 --N and TKN consistently reduced in the study period while NH 4 + -N initially decreased within 261 the dry season in 2022 and then, increased to the end of the study. Ammonium reduced in January 2023 possibly 262 due to the lower atmospheric temperature decreasing microbial nitrification activity;Figure 5
2. At 264 the end of study, WP unit achieved the least released mass of nitrate by 0.3 g.N which was 75, 50 and 83 % lower 265 masses compared to P, W, and C units, respectively. Nitrate is related to ammonium indicating possible existence of 266 nitrification process in the system while denitrification in sludge dewatering system was stated as a dominant 267 mechanisms of nitrate variation by Brix;Ammonium masses were higher in WP and P units,2010
3. Table 2. Seasonal effect on DW quality and mass release 6. References;American Water Works Association (AWWA), and Water Environment Federation (WEF),2017
4. Reed beds for biosolids drying in the arid northwestern United States;P S Burgoon;Water Science and Technology,1997
5. Reed beds: constructed wetlands for municipal wastewater treatment plant sludge dewatering;J S Begg;Water Science and Technology,2001