公开(公告)号：WO2023000108A1

公开(公告)日：2023-01-26

申请号：PCT/CA2022/051138

申请日：2022-07-22

Applicant: THE GOVERNORS OF THE UNIVERSITY OF ALBERTA

Inventor： LIU, Yang ,  YU, Najiaowa ,  ZHANG, Lei ,  MOU, Anqi ,  SUN, Huijuan ,  MOHAMMED, Abdulnayeem

IPC: C02F11/145 ,  A01G18/00 ,  C02F5/00 ,  C02F11/00 ,  C05F7/00 ,  A23K50/80

Abstract: A method of pretreating wastewater sludge including applying an amount of at least 0.01 g/g TSS Ca(ClO)2 to wastewater sludge to enhance digestibility of the sludge and reduce phosphorus concentration therein and then allowing sufficient time for the wastewater sludge to densify to a treated sludge having a specific resistance to filtration (SRF) of 3 to 4 (1010 m/Kg). The resulting treated sludge composition being sterilized, free of harmful bacteria, and useful as a fertilizer, particularly for growing mushrooms.