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2021 July August Marina World

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The magazine for the marina industry


ENVIRONMENTAL PRODUCTS & SERVICES Flovac vacuum pump-out pedestal in use. the marina itself, the control centre, or via any device (smartphone, laptop or tablet). This provides for real-time information, anticipation and issue prevention, all of which ensure safe operation. How it works - key components There are three main components in a vacuum sewerage system for marinas: the collection pit, the vacuum mains and the vacuum station. The collection pit The collection pit houses the vacuum interface valve which interfaces between the gravity side of the collection system and the vacuum side being generated by the vacuum pumps at the station. No power is required at this point as all action is pneumatic. Once 40 to 50 litres (8.8 to 11 gallons) of wastewater enters the collection pit, the valve opens and a mix of air and sewage enters the vacuum Below: Inside the vacuum station. Below right: Canouan Marina (Sandy Lane Yacht Club & Residences) in the Caribbean is fully equipped with a Flovac pump-out system. mains at high velocity. As only a slight amount of sewage accumulates in the pit, it remains there for minimal time thus avoiding the risk of bad odours in the area. Also, thanks to the mix of air and sewage, there is no chance of obstruction or blockage because air is the last element to pass before the valve closes again. The vacuum mains The pipes running from the collection points (sumps or suck-outs) to the vacuum pump station are called the vacuum mains. Installation of the mains is extremely flexible as the pipes are of small diameter and accessories, like lifts, can save on work. The vacuum lines can reach lengths of over 1km (0.6mi). In multi-branched or very lengthy networks it is possible to install isolation valves to improve management when a problem is detected. As mentioned earlier, any break in the pipe can be easily fixed and no sewage will leak out into the environment because the whole system is airtight. This also ensures that no bad odours can escape, which is essential for any marina or port facility. The vacuum station The vacuum station is the building that houses the vacuum tank, the discharge pumps and the vacuum pumps, as well as the control panel with the emergency alarms. The standard vacuum tank is usually made of stainless steel, which ensures a prolonged useful life. Also, the vacuum and sewage pumps provide a duty and standby capability as in municipal systems. The vacuum station is usually located near the final discharge point. It can be built or installed on the surface, underground, or as a mixed option. The vacuum tank, the vacuum pumps and the discharge pumps are proportional to the vacuum net size. Optionally, a small treatment plant or an oil separator can be added to the vacuum station to complete the waste cycle at the marina. For all bilge water installations, an accredited company must periodically collect the special waste from the oil and hydrocarbons separator. Inside the vacuum station there is no contact with wastewater, and all pumps are dry installed, which ensures safe and optimal operation. All around the world Flovac vacuum sewerage projects can be found in many port facilities worldwide, including Marina Vela Barcelona and Port Vell Barcelona (Spain), Sydney Superyacht Marina (Australia) and Canouan Marina (Saint Vincent and the Grenadines). The key driver in every Flovac project is to reduce the human footprint and the impact of wastewater systems on the environment while providing trustworthy and reliable service to marinas. This aim includes minimising energy consumption, avoiding marine pollution risks, and preserving the flora and fauna of the surrounding areas. 36 – July/August 2021

2 COLOURS ON 1 BOARD NEW Dura Deck ® Flip for Marinas Weathered Cedar / Pebble Grey This stunning product takes the colours from our Resist range and combines them into one single decking board profile so you can experiment with two colours in one design, or ‘flip’ your deck at a later date for a whole new look. Key Features Mahogany / IPE Larch / Red Cedar Cfl-s1 Resists Fire Resists Load Resists Fade Resists Stains Resists Expansion Resists Slips Tel: +44 (0)1255 440297 Email: Unlocking the Power of Composites for the Marine Industry

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