What is the use of sludge pellet machine

Granular sludge is a type of self-immobilized microbial consortium consisting of compact spherical-shaped aggregates of microorganisms that are used in wastewater treatment. The formation of granular sludge is a complex process resulting from biotic and abiotic interactions between microorganisms and sludge particles, resulting in the development of very compact aggregates with a diameter of approximately 1-3 mm, where the microbial cells are self-immobilized in a matrix of EPS [2]. The granules are formed due to slow-growing bacteria and highly starved microorganisms producing microbial aggregates that aggregate and form a balanced ecosystem, leading to the formation of granules [1].

Aerobic granular sludge (AGS) is a novel microbial community that allows simultaneous removal of carbon, nitrogen, phosphorus, and other pollutants in a single sludge system. AGS is distinct from activated sludge in physical, chemical, and microbiological properties and offers compact and cost-effective treatment for removing oxidized pollutants. AGS technology has shown considerable potential to replace conventional activated sludge with the unique advantage of excellent settling velocities, making secondary clarifiers unnecessary in AGS technology, and reducing energy consumption and land occupation by 58%-63% [3][5].

Aerobic granular technology is a promising technology for wastewater treatment, but is not yet established as a large-scale technology. The long start-up time and facile biomass loss of aerobic granular sludge (AGS) impede its application for actual wastewater treatment. One study investigates a novel assist-aggregation strategy based on Aspergillus tubingensis mycelium pellets to accelerate sludge granulation, and engineered Fe 3 O 4 nanoparticles were used to further enhance flocculent sludge aggregation [10].

Overall, granular sludge and AGS technology show potential as effective and efficient methods for wastewater treatment. They offer compact and cost-effective treatment, allowing for the removal of carbon, nitrogen, phosphorus, and other pollutants in a single sludge system. While still not yet established as large-scale technologies, research is ongoing to improve the start-up time and biomass loss of AGS technology, making it more practical for wastewater treatment applications.