CAILu,CHENJun,FENGHao.Discussion on Key Design Parameter of Municipal Sludge Aerobic Fermentation Project: Fermentation Cycle[J].China Water & Wastewater,2022,38(18):72-77.
Discussion on Key Design Parameter of Municipal Sludge Aerobic Fermentation Project: Fermentation Cycle
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第18期
Page:
72-77
Column:
Date of publication:
2022-09-17
- Keywords:
- sludge; aerobic fermentation; composting; drying; fermentation cycle; maturity
- Abstract:
- Fermentation cycle is a key design parameter that determines whether the municipal sludge aerobic fermentation project can achieve the expected performance, and also an important parameter that affects the project footprint area and construction investment. From the aspects of dehydration reduction, microbial inactivation and maturity, the suitable aerobic fermentation cycle was discussed based on the product applications, standard requirements and engineering practices, which aimed to provide reference for engineering design. The main fermentation cycle to meet part of the dehydration reduction and microbial inactivation index requirements should be at least 15 days. If the product was used for incineration, the main fermentation cycle could be set to 15 days, and at least 20 days for soil conditioner. If the product was used as fertilizer in farmland or forestland, it was recommended that the whole cycle of main fermentation and subsequent maturity should be at least 30 days. In engineering practice, the main fermentation cycle should be at least 15 days, and the maturity cycle could be set to 5-15 days or longer depending on the use of the product.
Last Update:
2022-09-17