Technology news12

Filtration+Separation March/April 2011

Biggest sifter offers high capacity screeningSeparation specialist SWECO has developed what it says is its biggest sifter yet, the BigMax Gyratory Sifter, part of the GyraMax line, with improved high capacity screening.

The sifter can cope with demanding screening applications such as activated carbon, fertilizer, frac sand, limestone, petroleum coke, plastic pellets, PVC powder, roofing granules, salt, sugar, and more. It has the potential for 240 ft2 (22 m2) of screen area in one machine with 12 ft (3.7 m) of screen deck length.

The BigMax allows one to four separations in a single machine, depending on the desired deck configuration. The machine can feed the material at a single point or independently to each deck. Quick screen changes are possible from either end of the machine without the need to remove the ball trays. The over- and under-size material from each deck can be sampled individually.

www.sweco.com

The BigMax Gyratory Sifter from SWECO.

Coconut shell drinking water treatment Siemens Water Technologies has developed a coconut shell-based carbon for drinking water treatment.

AquaCarb 1240CAT, which Siemens says is superior to the catalytic carbon used in water treatment, can provide improved results in water quality targets for chloramine, hydrogen sulphide (H2S), and hydrogen peroxide (H2O2) removal. The coconut shell base provides a higher adsorption capacity with extensive micropore structure for volatile organic compounds (VOCs), lower ash content and higher hardness/abrasion resistance, which can result in longer effective carbon life, reduced replacement frequency and lower overall life cycle costs as compared to traditional catalytic coal carbons in the market.

Suitable applications for AquaCarb 1240CAT include H2O2 removal in semiconductor wastewater or groundwater remediation systems employing UV oxidation, H2S and chloramine removal for the treatment of municipal drinking water, and chloramine reduction for process water treatment in the bottling industry. Previously, these applications were addressed with catalytic activated carbons based on bituminous coal.

“This product provides an alternative choice for catalytic activated carbon, and offers improved performance in many applications as we’ve seen with our other coconut shell-based carbons,” claimed Christopher Rinaldi, General Manager of

Siemens’ activated carbon business. “In addition, coconut, as a renewable resource, is gentler to the environment than coal-based carbon products.”

AquaCarb 1240CAT catalytic carbon is part of Siemen’s Westates carbon product line for the North American market.

www.siemens.com

Siemens Water Technologies has developed AquaCarb 1240CAT, a coconut shell-

based carbon for drinking water treatment.

Mobile fuel tank cleaning makes fuel clear and brightUS fluid treatment specialist Algae-X International (AXI) has added the HC-80 to its line of standard Mobile Tank Cleaning Systems.

This new system is suitable for stabilising and decontaminating diesel fuel, biodiesel, light oils and hydraulic fluids. AXI says that the high capacity, multi-stage, automated fuel tank cleaning system restores fuel to a ‘clear and bright’ condition.

The HC-80 is equipped with a Smart filtration controller and is suitable for service providers in

the tank cleaning industry, where it can clean tanks, remove water and sludge and restore optimal fuel quality. The controller provides a visual status report of system power, pump operation and alarms for high pressure, high vacuum and high water.

AXI’s Mobile Tank Cleaning (MTC) systems have low operating costs and a compact design. The MTC HC-80 has fuel flow and transfer of 80 GPM. As well as decontaminating fuel and tanks, it can also remove sludge and solids.

www.algae-x.net

Ultrafiltration system purifies leachate

Axium Process has designed a fully automatic, self-contained ultrafiltration (UF) membrane system that purifies leachate and can reduce the quantity of material being disposed of or tankered away.

The system, which reportedly requires little manual intervention, removes 100% of suspended solids and up to 85% of chemical oxygen demand (COD). It requires almost no chemical addition compared to

traditional dissolved air flotation (DAF systems), which could help reduce chemical running costs.

The system has a small plant footprint and can be installed into a standard shipping container to provide protection from extremes of weather and flexibility to re-locate if needed. It can also be customised to suit individual site requirements.

www.axiumprocess.com