"If you're not processing your wastewater and getting all the energy you can out of it, it's a waste and you're losing out," says Wiley Process Engineer Heath Barker. In this article, he talks about the latest trends in covered anaerobic lagoon (CAL) systems and how they need to be nurtured and optimised to achieve maximum benefits.
Every year, over 85 million tonnes of biosolids (sludge) are dewatered at most of the 2400 municipal sewage treatment plants in Australia.
Can wastewater treatment become more sustainable? While the goal of treating wastewater is to minimise the impact on the receiving environment, the processes themselves are usually powered by electricity generated by fossil fuels.
Developed by Hydro-Plus in conjunction with Gorman-Rupp, the self-cleaning sump addresses many of the issues confronting owners of sewage pump station assets, such as high capital costs, high energy consumption and the cost of intervention for the likes of sediment, solids or fat build-up or for removing chokes from pumps.
As part of its goal of providing high-quality, safe drinking water to households while at the same time finding ways to improve the management of wastewater, MidCoast Water is using band screen technology to improve efficiencies at its Dawson sewage treatment plant.
Hydrothane External Circulation Sludge Bed (ECSB) and Upflow Anaerobic Sludge Blanket (UASB) for anaerobic wastewater treatment12 February, 2016 | Supplied by: Hydroflux Industrial Pty Ltd
Hydrothane offers an anaerobic process design that also saves on space and removes noise, odour, corrosion and maintenance issues. The process is suitable for industries with organically laden wastewater, such as chemical, food and beverages, and pulp and paper.
Lisa Neville and Josh Bull have announced the start of a $53 million upgrade of the Sunbury Recycled Water Plant.
The Atlas Copco ZS 18–160 kW positive displacement screw blower is suitable for most wastewater treatment plants. It is designed to the company's plug-and-play set-up, making installation easy, and features a small footprint.
Gorman-Rupp has released the Eradicator Solids Management System, a pumping system for handling solids-laden wastewater. The system features an aggressive, self-cleaning wear plate incorporating a number of notches and grooves, as well as a lacerating tooth that helps break up stringy materials, scrape them off the impeller vanes and pass them through the pump.
Dennis Benson says there are three main factors why Australian wastewater plants are making the switch to screw blowers: controllability, reliability and reduced energy usage.
An international report that takes an investor's perspective to recovering resources from wastewater has been welcomed by the water industry as an important step towards sustainability of water management in Australia.