Drinking Water Tank Relining - Case Study
Courtesy of Formatank Limited
Formatank Ltd rapidly refurbished two 6.5M3 hydrophore tanks which provide fresh water to the 300 strong crew on board a pipe lay and heavy lift ship.
Refurbishment works was carried out whilst the vessel was berthed in Gibraltar.
The engineers of the seabed-to-surface Engineering, Construction and Services Contractor noted deterioration of the coating, and walls of their fresh water storage tanks on board one of their 40+ fleet of ships, and relayed the diagnosis to Formatank.
Advances offer better performance, less down time From municipal water treatment plants to industrial cooling ponds, corrosion is breaking down concrete and steel. The coatings industry has developed key advances in epoxies, polyureas, polyurethanes, and acrylics to help prevent structural deterioration. New resin technologies and improved formulations are producing better performing coating systems that offer higher solids products with higher film build and better edge protection. These new coating...
Impact of intermittent water supply on water quality in Lebanon
Lebanon in general and its capital, Beirut, suffer from water shortage due to the increasing water demand and the lack of proper management despite its abundant water resources. An intermittent water supply strategy was implemented in order to minimise deficiency problems. This, however, can seriously affect water quality due to the potential suction of non-potable water by negative pressures, biofilm detachment, and microbial re-growth especially when static conditions occur. Intermittent supplies also entail...
Improving Awareness for Self-Lay
Untitled Document At the Network 2004 conference, OFWAT’s Elaine Chatham started her Presentation by saying “House-builders, … you can lay water pipes”. At WRc, we think this is an important message for all developers of housing and commercial sites. It is also an important message for all the companies that provide products and services to developers – those that lay water mains and services, that design water networks, that manufacture or distribute...
Composting Food Residuals on the Farm
A county agency and a farmer in Vermont have teamed up to collect and compost food residuals and other organics. The Rutland County Solid Waste District (RCSWD), which is responsible for managing MSW for 16 cities and towns, began planning the food residuals composting program in December, 1996 with the Rutland Natural Resource Conservation District, one of 14 districts in Vermont that promotes agriculture, water quality and economic development. The conservation district canvassed area farms to determine which...
Choosing an Oil Skimmer for the Machine Shop
Advantages of Using an Oil Skimmer: The use of an oil skimmer in the machine shop setting holds many benefits. Removing the oil from a machine coolant tank will initiate some esthetic benefits such as cutting down on the amount of smoke generated from the cutting tool coming into contact with oil laden coolant. When a machine is shut down for the weekend, oil has a chance to come to the surface of the coolant tank. Bacteria that are living in the coolant tank use up the dissolved oxygen in the coolant mix,...
Technical Requirements for Used Auto Recycling
Abstract Based on the Cyclical Business and Waste Act, the Used Auto Ordinance (AltautoVO) went into effect on 1st April 1998. The Used Auto Ordinance regulates in particular the path of the used auto from the last owner to the recycler as well as the requirements placed on the used auto acceptance points and the used auto recycling plants. This discussion article is concerned with the technical requirements for the used auto recycling plants in compliance with the Annex to the AltautoVO (`Requirements for...
Performance-Based Measurement Systems
Many of the Environmental Protection Agency`s (EPA`s) methods used to monitor air, water and soil for environmental contaminants prescribe step-by-step details on how the chemical analysis must be conducted and prohibit any deviations or variations. The EPA has recognized that monitoring equipment and technology have improved tremendously over the last few years; that environmental media do not always act the same way for each analysis; and that the matrix may affect the analysis and results. The EPA has been...
Removal of Lead from Gasoline
On 12th March 1997, the European Commission adopted a proposal from the Environment Commissioner Ritt Bjerregaard on a European Union strategy to combat acidification. The strategy will, by 2010, reduce significantly the extent of the areas in the European Union where the tolerance of sensitive ecosystems to acidity is exceeded. Main elements of the strategy include establishment of national emission ceilings for each acid rain pollutant; ratification of the UN protocol on further reductions of sulphur emissions;...
Sydney´s Sustainable House
Introduction Sustainability or `sustainable development` has become a term which is frequently applied to land use and social planning and resource issues. Sustainability is a concept which draws attention to development practices which can degrade natural ecosystems and deplete natural resources. If development is defined broadly to include any cultural activity, then sustainable development may be defined as any practice that meets the needs of the present population without compromising the ability of future...
Ozone Brings Better Bottled Water
The proliferation of bottled beverages worldwide and an increased awareness of consumer health issues have beverage bottlers rethinking how to keep their liquids safe for consumption. One problem they face is the need to deliver a product that is free of bacteria, to provide extended shelf life and product quality. Ozone has quickly become the disinfectant of choice among water bottlers worldwide. Although ozone was `discovered` in the mid-19th century, it is only during the last several decades that its...
Improvement of Electrodeposition Paint Processes with Reverse Osmosis
Abstract For over 15 years, membrane separation processes have been very effectively utilized as essential components of electrodeposition (ED) paint processes. ED is the accepted method of applying the undercoat paint layer to new automobiles and appliances. As cross-flow membrane and ED paint technologies mature, new applications combining the two have been developed. A major American automobile manufacturer now uses reverse osmosis (RO) to treat ultrafiltration (UF) permeate generated by an ED paint process,...
Skimming Oily Wastewater
As large generators of oily wastewater tighten effluent controls, the U.S. Environmental Protection Agency (EPA) is targeting smaller generators. Some of the firms receiving their attention are smaller manufacturing plants, automotive garages, mobile equipment service shops and truck farms. Many of these firms do not have access to a sanitary sewer system that will accept oily wastewater. Because disposal in storm sewers also is prohibited, they frequently use injection wells, septic system drainfields, dry wells...
Nanofiltration As a Post-Treatment at a Conventional Water Treatment Plant
Introduction The Clifton Water District (Colorado) covers roughly 20 square miles stretching east of Grand Junction to Palisade, and extending south from I-70 to the Colorado River. The District has approximately 7,400 service connections serving a population of 30,000. Utilizing the Colorado River as its primary source, the District`s Charles A. Strain Water Treatment Plant has a capacity of 12 million gallons per day (mgd). Conventional water treatment processes are employed including presedimentation, coagulati...