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Solar-powered valve for water industry

The manual operation of remote decentralised plants such as

well as the status monitoring for the entire system can also be

rainwater retention basins is costly in terms of both time and

performed centrally.

money. Energy-autonomous automation with photovoltaic or wind power could provide a solution to this problem. Rainwater retention basins catch surplus water from sewers during heavy rainfall, thus protecting wastewater treatment plants

The flow control gate valves are actuated with pneumatic linear actuators type DFPI and DLP, some of which are equipped with positioners. The pneumatic actuators are suitable for outdoor installation, often required in the water industry.

and natural bodies of water from overload. Once the wastewater

The energy-autonomous station is individually dimensioned

treatment plants in question have sufficient capacity again, the

in terms of size and performance. Among the most important

gate valves on the retention basins are opened and an appropriate

parameters are:

amount of water is released. Since the plants are often located in places without electricity supply, it was previously necessary to operate the gate valves manually, which meant a time delay and associated labour costs.

• Location-specific data such as exposure to sunlight, orientation, presence of shade. • Logging of the energy consumption profile on the basis of type of consumption, hours of operation, total operating period.

An energy-autonomous solution from Festo can now be

• Definition of length of period of autonomous operation required

used to actuate the gate valves automatically by remote control.

to ensure safe operation in the case of an energy source failure.

A photovoltaic or wind-power system supplies the necessary

Advantages of this energy-autonomous pneumatic solution

electricity for the operation of this valve terminal solution and

include: a plant without mains power can be remotely operated;

a compressor generates compressed air.

operators can save time and money on manual operation; and it

Using a GSM modem, the entire system can be controlled

can provide continuous monitoring of the system.

and monitored remotely from the control room of a wastewater

Festo Pty Ltd

treatment plant. The opening and closing of the slide valves as

www.festo.com.au

20 This issue is sponsored by — Schneider Electric — http://www.schneider-electric.com.au/sites/australia/en/products-services/product-launch/smart-panels/smart-panels.page

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Sustainability Matters Aug/Sep 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...

Sustainability Matters Aug/Sep 2015  

Sustainability Matters is a bi-monthly magazine showcasing the latest products, technology and sustainable solutions for industry, governmen...