#BlueTechForum2019 – Innovating Towards Resilient Water Systems | 5th & 6th June 2019 | Kew Gardens, London, UK

World Water Works inDENSE™ system increases process throughput and performance through the selection of dense sludge aggregates with improved settling rates and the promotion of enhanced biological phosphorus removal (EBPR).

inDENSE is a gravimetric selection technology that provides a method for retaining the denser biomass while wasting out the light fraction of the MLSS in the treatment system. Increased density can lead to improved settling characteristics, which allows for the prevention of biomass loss and subsequent treatment disruption, especially during wet weather scenarios.

Selection for faster settling particles, and process configuration and physical forces can encourage aerobic granular sludge. The hydrocyclones select dense granules through the underflow while the lighter solids are wasted via overflow. The use of an external selector for improving settleability and stabilizing EBPR, with or without the use of formal anaerobic selector, is a low capital cost investment for wastewater treatment plants.

DEMON® is the continuous or SBR deammonification process utilizing granular anaerobic ammonium oxidizing bacteria (anammox) biomass for aiding in reduction of high strength ammonia from side stream solids dewatering facilities reject flows. World Water Works’ DEMON process can solve the problem of returning high concentrations of ammonia to the plant influent. The true key to the success of the technology is the patented advanced biological process controls and the physical separation used to facilitate the growth and retention of the anammox bacteria.

Unlike the traditional nitrification-denitrification method for removing nitrogen, which requires large amounts of energy (1.8-2.7 KW-hr/lb. nitrogen removed), alkalinity addition and external carbon addition, the DEMON process uses ammonia oxidizing bacteria (AOB) and annamox to efficiently and reliably remove ammonia from wastewater. The system operates under intermittent aeration with maximum operational dissolved oxygen levels range from 0.3-0.5 mg/L. The system is completely automated which provides great system resilience and lessens the need for operational oversight.