New MBR system and UF membrane from Hyflux

Singapore-based Hyflux Ltd will be unveiling a new energy-efficient membrane bioreactor (MBR) and a new ultrafiltration (UF) membrane at the Singapore International Water Week, which starts on 2 July 2012.

The PoroCep® hollow-fibre submerged MBR will offer one of the highest energy-efficiencies and membrane packing densities in the market, says Hyflux, addressing the critical issues of water quality, space and lifecycle costs faced by industries and municipalities.

PoroCep membranes are made of high-density polyethylene, a non-toxic, non-leaching material with excellent tensile strength and strong pH and oxidation resistance. Its asymmetric, slit-pore structure ensures high-quality permeate despite long-term fluctuations in feedwater quality.

In addition, the membranes are designed to float freely when submerged in water, minimising the build-up of foulants on the membrane surface, so that the membranes continue to function effectively.

Completing the PoroCep series of water treatment solutions is the containerised PoroCep MBR system, which can treat up to 400 m³/d of water (subject to feedwater quality) and includes components such as tanks for cleaning agents and sludge pumps. These pre-engineered systems provide customers with a complete, easy-to-install solution that draws on Hyflux’s extensive technical expertise in wastewater treatment and membrane research.

Hyflux will also be showcasing its new tri-bore UF membrane, Kristal ® 600ET3 at the Singapore show.

The Kristal 600ET3, which is certified to the NSF Standard 61, is made of modified polyethersulfone. This has the advantage of superior tensile strength while filtering at high flux rates because of the higher polymer density of the tri-bore fibres compared with other fibre configurations in the market.

This in turn translates into greater membrane durability and lower replacement costs for users.

Like the Kristal single-bore series, Kristal 600ET3 delivers superior permeate quality. The membranes have been proven to effectively remove the main drinking water contaminant, cryptosporidium.

Their effectiveness in rejecting suspended solids and microorganisms is manifested in consistently low permeate turbidity, silt density index and total bacterial/viral counts, despite fluctuating feedwater quality.

All Kristal membranes are developed, tested and manufactured in Singapore. Installed in many large and small seawater reverse-osmosis (SWRO) and wastewater recycling plants, Hyflux says that Kristal membranes are used in over 40% of SWRO desalination pretreatment projects worldwide, including the Tianjin Dagang Desalination Plant in China, and the Magtaa Desalination Plant in Algeria.

These installations will produce more than 2.5 million m³ of product water daily by the time Magtaa Desalination Plant is completed in the second half of 2012.