Effectiveness of Subsurface Flow-Wetlands to Reducing TSS Levels and Stabilizing pH in Tofu Liquid Waste

Subsurface Flow Constructed Wetlands for Wastewater Treatment

Recent developments in numerical modelling of subsurface flow constructed wetlands.

Numerical modelling of subsurface flow constructed wetlands (CWs) gained increasing interest during the last years. The main objective of the modelling work is, on the one hand, to increase the insight in dynamics and functioning of the complex CW system by using mechanistic or process based models that describe transformation and degradation processes in detail. As these mechanistic models are...

Residential subsurface flow treatment wetlands in northern Minnesota.

Approximately 30% of Minnesotans use on-site systems (approximately 500,000 residences) and >50% are failing or non-compliant with regulations due to restrictive soils and site conditions. Many sites occur near lakes and streams creating health hazards and deteriorating water quality. SSF CWs have been evaluated year-round at two northern sites since 1995. The NERCC CWs simulate single homes an...

Enhancing Oxygen Transfer in Subsurface-Flow Constructed Wetlands

Conventional subsurface-flow constructed wetlands (SFCW) for wastewater treatment are typically designed as horizontal plug-flow vegetated beds. Limited oxygen, provided mostly by slow transfer through air–water interface, turns these systems anaerobic, thus requiring a long hydraulic retention time (HRT) to achieve desired effluent quality. A SFCW treatment system with biofield effluent dispos...

: examining l2 teachers’ corrective feedback types in relation to learners’ uptake, proficiency levels, and context types

abstract this study investigates the teachers’ correction of students’ spoken errors of linguistic forms in efl classes, aiming at (a) examining the relationship between the learners’ proficiency level and the provision of corrective feedback types, (b) exploring the extent to which teachers’ use of different corrective feedback types is related to the immediate types of context in which err...