fbpx
Print this page
Friday, 17 September 2021 07:55

Kiwi innovation for HK wastewater system

Written by  Mark Daniel
Forsi is taking its technology abroad, such as a project about to be commissioned at the City University of Hong Kong. Forsi is taking its technology abroad, such as a project about to be commissioned at the City University of Hong Kong.

While well known in New Zealand’s dairying circles, Matamata-based Forsi Innovations are also sought further afield, such as a project about to be commissioned at the City University of Hong Kong.

 This university was undertaking a new and sizable project to set up a dairy veterinary training facility just outside of central Hong Kong, in the Kowloon province. The facility takes the form of a small dairy farm, housing 50 adult and 25 young stock in a barn-type set up, using bought-in feed and milking through a single-sided 9-bale herringbone shed.

Forsi was approached as it seemed one of the few companies in the world that could filter all the effluent from the barns and milking shed to a strictly regulated and very high standard for discharge back into the municipal wastewater system. The fact they were able to supply a bespoke system that met the specific needs of the university’s project, helped Forsi get the contract.

Meeting Hong Kong’s extremely strict water discharge regulations requires no uncontrolled discharges, with all reject liquid waste from the filter elements captured in an absorbent medium, which is eventually used as a slow-release fertiliser on a farm or market garden.

The system comprises of a series of separation processes, each stage taking out a certain sized particulate, getting finer with each step. The end process is a reverse osmosis (RO) filtration that removes any viruses or pathogens.

 The system also includes an in-built sanitation system that ensures no bacterial growth will occur in the treated liquid after the RO process, allowing it to be stored and hold its quality until required. The Forsi system has built-in redundancy: it is a two-in-one unit, meaning that if there is an issue with any part of the process, one side can be shut down and the other side started up. The design allows full monitoring and remote access to the system from Forsi’s Matamata HQ, as well as local oversight from a team in Hong Kong.

The quality of water discharged from the system is equal to that of drinking water standards, a benchmark set by the governing body in Hong Kong because there was no clean water standard for effluent and a defined parameter needed to be set.

Craig Hawes from Forsi says, this technology is revolutionary and can be adapted to any wastewater situation, not just effluent.

“We originally developed the system for the New Zealand dairy effluent situation that was prevalent back in 2014-15, but due to the dairy payout dropping as it did for the 2016 season, effluent systems were no longer priorities for farmers.

“As the focus returns to better effluent management, our modular systems can be configured for basic separation situations, but with added filtration elements, can deliver high quality water for ‘flood washing’ holding yards, with the added benefit of reduced bacterial loading that stops the development of slime, alongside better hoof health.”

www.forsi.co.nz

More like this

Gongs for John Deere

The tractor of the Year 2022 Awards, held at the recent EIMA show in Bologna, handed out a brace of gongs for the Green Giant John Deere.

Putting the squeeze on baleage

While the task of moving wrapped bales in New Zealand normally falls to trucks of flat bed trailers, in Europe, probably due to very strict secure load regulations, many trailer manufacturers are now offering more specialised trailers with hydraulically clamped side bars to keep load secure.

Digital pre-start safety checks

According to numbers published by ACC, more than 60 farm-related injuries are reported every day, leaving much room for improvement.

JV for Bucket Test App

Irrigation NZ and global farm management company CropX have established a joint venture agreement for the Bucket Test app.

National

Dairy tops organic exports

Dairy has been named as New Zealand’s largest organic sector with exports of $153.8 million, up 55% from 2017.

Machinery & Products

Gongs for John Deere

The tractor of the Year 2022 Awards, held at the recent EIMA show in Bologna, handed out a brace of…

Digital pre-start safety checks

According to numbers published by ACC, more than 60 farm-related injuries are reported every day, leaving much room for improvement.

JV for Bucket Test App

Irrigation NZ and global farm management company CropX have established a joint venture agreement for the Bucket Test app.