Notable Projects by ARMATEC Environmental Ltd

	All Fibreglass Pump Station Corrosion proof, leak proof, infiltration proof, easy to clean, strong, light weight, high performance, faster installation, lower life cost. The pump station featured is 1.8 metres diameter by 6 metres deep. It has a special FLYGT TOP base to enhance pump station performance. The pump station is shown being loaded out after factory fitout - ready to be lowered directly into the ground, connect and backfill. Available from ITT Industries ph 09-415-8687. Pdf file is a project report.
	Phosphorus & Algae Removal from Wastewater An IAF (induced air flotation) plant was installed in 2005 at the Waihi wastewater treatment plant to remove phosphorus and algae from the oxidation pond discharge. The treated water is now clear and has a total phosphorus of less than 1 g/m3 (limit 1.4 g/m3) and suspended solids of less tha 15 g/m3 (limit 35 g/m3). The photos at left shows the phosphorus and algae sludge being removed from the flotation tank. The Ohinemuri River into which the treated water flows, is now cleaner and safer for recreational pursuits.
	Biological Scrubber for Hydrogen Sulphide Removal Two biological scrubers have been installed to remove hydrogen sulphide from gas streams at two fertiliser works. Hydrogen sulphode removal efficiencies of over 97% have been achieved within days of commissioning. The hydrogen sulphide laden air is contacted wih a scrubbing solution in a vessel packed with an inorganic support material that hosts microorganisms which aerobically degrade the absorbed hydrogen sulphide. The only "chemicals" needed are very small quantities of nutrients to ensure the health of the microorganisms. Pdf file is a published paper with operating data.
	Dairy Industry Chemical Wastewater Drains in Fibreglass A complete drainage system was installed at a Dairy Plant to handle wastewater including CIP (clean in place) chemicals. The fibreglass was installed below the concrete slab, then piped away via fibreglass manholes to the effluent treatment plant. ARMATEC provides fibreglass D-Traps, pipes, sumps, manholes, flumes, chemical tanks, chemical bund coatings etc as complete integrated systems. The picture to left shows the D-Traps being set at the correct elevation prior to the pouring of the concrete floor on a new site. The ARMATEC contact moulded industrial grade fibreglass can handle all of the chemicals typically used in a Dairy factory, as well as the temperature fluctuations that occur. ARMATEC has pioneered the use of fibreglass in this application since 1988. Contact ARMATEC for our handbook titled " Fibreglass Products for Drainage Systems".
	Petrochemical Storage Tank Lining A flake filled polyester coating was used to coat the internal base and 600 mm up the tank wall of a methanol storage tank at the Synthetic Gasoline plant in Taranaki, New Zealand. Hundreds of similar tanks have been lined like this elsewhere in the world, particularly in the USA and Singapore. Previously the tank ahd been coated with a high-build epoxy, that had to be replaced about every 8 years. In 1992 inspections found deep pitting in the steel tank floor. ARMATEC was contracted to apply a flake filled polyester coating and this gave trouble free service since with no touch ups or repairs needed. The plant was shut down in November 2004. The pdf file is a brief project report.
	Carbon Bed Adsorbers for Landfill Gas Odour Two activated carbon bed adsorbers were supplied to an Auckland city site extracting landfill gas. The activated carbon adsorbs the hydrogen sulphide and other odours allowing the gas stream to be discharged to atmosphere in the neighbourhood of a city subdivision without adverse effect. The design had to take into account the flammable methane gas and noise restrictions. ARMATEC fibreglass fans are used to move the corrosive air. Acoustic attenuation enclosures were provided to minimise noise.
	Ammonia Scrubber and FRP Ducting An extensive fibreglass ducting system and an ammonia scrubber were installed to collect and treat odours given off during treatment of the solids stream at the Auckland Municipal Wastewater Treatment Plant. The fibreglass collection ducting system included hoods over conveyors and solids bins, connections directly to equipment, actuated dampers, collection plenums, balancing dampers, and a fesh air supply system. The ammonia scrubber removes ammonia from the air stream before it is fed to in ground soil bed filters. Fibreglass fans are used to move the corrosive air stream and overcome the pressure drops of the system.
	ArmaGrout MG for Whirinaki Turbines ArmaGrout MG was used for the critical foundations at the oil fired 155 megawatt power station opened at Whirinaki in 2004. This is a reserve power station and will be used when there is a risk of power shortages such as at times of low hydro-lake levels. At the heart of the power station are three Pratt & Whitney "jet engine" turbines and it is under these that ArmaGrout MG was used to tie them to the concrete foundation. ArmaGrout MG has a compressive strength in excess of 90 MPa, has good flow characteristics, incorporates low toxicity raw materials, and is readily available at short lead times in New Zealand.
	Fertiliser Den Scrubber for Fluorides  An existing scrubber system at Ballance AgriNutrients Ltd's Awarua plant was extended and modified to overcome difficulties in meeting air discharge consent limits. Detailed chemical engineering was required to sort out the fluoride and water flows at site. A new void tower scrubber was installed and other modifications were made to tie this in with the rest of the plant. As a result the plant is now able to use phosphate rock from any source and is able to meet its resource consent conditions at all times. For the first time in many years, plant management are able to operate their plant at full rate to a schedule they choose rather than being limited by fluoride discharge problems.
	Fertiliser Hygiene Scrubber for Fluorides A complete hygiene scrubber system including a venturi scrubber was installed to overcome worsening conditions in the Ravensdown Hornby fertiliser manufacturing plant, as new higher fluoride rocks were used. Fluoride emissions in the manufacturing plant are collected with fibreglass hoods and fibreglass ducting. The venturi scrubber removes the particulate and the majority of the fumes. The scrubbed gases are then mixed with the gases from the separate den scrubbing system, and are discharged up a common stack. The single stack approach has reduced the visibility of the stack plume and has minimised the amount of stack sampling and analysis needed. Conditions in the plant have improved dramatically and the plant air discharge consents are being met.
	Fibreglass Manhole for Municipal Sewer A lightweight fibreglass ARMATEC manhole replaced a badly corroded and leaking 100 year old concrete manhole in Devonport, Auckland. The use of a factory built manhole ensured there were no leaks at joints, a major plus for the supervising engineers faced with large infiltration flows into the current ageing sewer network. The manhole's light weight meant it was able to be installed into a site with difficult access. The corrosion resistant fibreglass will give long life with minimal maintenance.
	Odour Control at Food Manufacturing Plant An extensive fibreglass ducting system together with a venturi scrubber, fibreglass fan and stack was installed to meet Resouce Consent requirements of no objectionable odour at the plant boundary in a city location. Pilot plant work was carried out with the plant's consultants demonstrated the viability of the proposed system that collected odourous gas streams from many different food manufacturing operations and then treated them in a single multi-throat venturi scrubber. This scrubber removes particulates and odours so that the treated single airstream can be discharged to atmosphere without resulting in objectionable odours and particulate deposition at neighbouring properties.
	Waste Neutralisation Tank Coating at Brewery Heavy duty tank lining Ceilcote 6400S Ceilcrete was installed to protect an existing concrete tank from acidic wastes from CIP (clean in place) chemicals. This nominal 3mm barrier lining is based on a vinyl ester resin system, is silica filled to give a tough non-slip impermeable barrier, and is glass fabric reinforced to give exceptional strength. ARMATEC's extensive quality assurance procedures were used to overcome all site difficulties of a tank below grade. Since installation the lining has required almost zero maintenance in 5 years other than a very minor repair following a runaway mixer blade.
	Formaldehyde Scrubbing at Particle Board Plant One of three horizontal crossflow scrubbers at a particle board factory treating air to reduce formaldehyde emissions. The scrubber pictured treats fumes from the 2 presses at the plant. The other scrubbers treat fumes from the cyclone driers. The scrubbers are able to remove between 50% and over 90% of the formaldehyde depending on the chemical regime selected in the scrubbers. This makes the units ideal with changing air discharge limits from the local Regional Council. The formaldehyde captured is sent with the scrubber blowdown to the biological waste water treatment plant. The installations feature all fibreglass corrosion resistant and high efficiency CLUB fans
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