A large Auckland brewery was encountering high effluent disposal costs, including repairs to municipal sewers caused by their corrosive acidic effluent. They determined to convert an existing mostly underground concrete storage tank to a neutralisation tank, but faced the problem of corrosion in this tank.
Odour Control at Food Manufacturing Plant
Fibreglass Manhole for Municipal Sewer
Fertiliser Hygiene Scrubber for Fluorides at Fertiliser Plant
Fertiliser Den Scrubber for Fluorides
ArmaGrout MG for Whirinaki Turbines
Ammonia Scrubber and Fibreglass Ducting at Wastewater Treatment Plant
Air given off from the biosolids treatment plant at Watercare’s Mangere wastewater treatment plant contains ammonia and odours. This air had to be captured and ducted away for treatment in soil bed filters. However firstly the ammonia had to be removed as it would have had an adverse effect on the soil bed filter biology.
Carbon Bed Adsorbers for Landfill Gas Odour
A retirement village was built on the site of an old landfill, closed many years earlier. The developer had to control methane emissions from the landfill, and installed a number of bores to extract gases from the landfill. The challenge was to dispose of the methane without any odour complaints from the hydrogen sulphide gas that came out of the wells with the methane.
Petrochemical Storage Tank Lining
Dairy Industry Chemical Wastewater Drains in Fibreglass
Biological Scrubber for Fertiliser Plant
Tertiary Wastewater Treatment Plant at Waihi
All Fibreglass Pump Station for Residential Wastewater
There are two problems faced by all wastewater pump stations: corrosion and odour. Typical concrete pump stations corrode within 20 years of installation, and do not meet the requirement of a 50 year design life required in municipal applications. Corrosion is worse when there are long residence times in the system, as the wastewater can go anaerobic and produce significant quantities of corrosive hydrogen sulphide.