Name

Biofilm and densified sludge retention strategy using migrating carriers and hydrocyclones

Speakers

Daniel Dair

Authors

Richard Brice, World Water Works, Australia
Jason Calbourn, World Water Works, USA

Description

The miGRATE™ process, patented by WWW-Arxtera, is specifically engineered to promote biofilm growth, improve sludge settleability, and enable simultaneous nutrient removal (SNR). This is achieved by tailoring the carriers' specific gravity and shape, optimizing their settleability and mobility in continuous flow or Sequencing Batch Reactor (SBR) configurations, without the need for screening in main bioreactors or settling phases. 

Furthermore, the integration of physical solids selectors, including static screens, drum screens and hydrocyclones in series allows for precise control over the ratio of biofilm biomass (BB), densified activated sludge (DAS), and conventional suspended growth (CSG). 
This strategic manipulation enhances overall process capacity and stability. Importantly, this approach aims to minimize the need for extensive retrofitting modifications and process control restrictions in main-stream SNR applications, making it a promising solution for sustainable and cost-effective wastewater treatment practices. 

Here we present a full-scale application of miGRATE(TM) and inDENSE(TM) technologies in series at the Warminster Water Reclamation Facility (WRF) in PA. The Warminster WRF is a 38ML/d municipal wastewater treatment facility faced with significant challenges in improving nitrogen removal and enhancing sludge properties to boost overall treatment capacity.

 

Time

2:05 PM - 2:30 PM

Location Name

Room 2

Track

11:50 - 14:55 Process Intensification