Tracking the tiniest cracks – with H2O wastewater treatment. Heavy use, material fatigue and material faults can cause tiny cracks in plastic and metal parts. These are so small that they are invisible to the naked eye. But they can still be relevant to safety, e.g. on the wings of passenger jets. That’s why these parts are regularly checked for micro cracks. One way of doing this is the dye penetration process, where the part to be checked is first thoroughly cleaned. Applying a special dye and using a suitable developer, the tiniest cracks become visible on the surface, enabling defective parts to be easily identified and replaced. If the crack check reveals no problems, the transfer agents are washed and approved for further operations.
By H2O GmbH based in Steinen, GERMANY.
Since nitrates are very soluble and do not bind to soils, they have a high potential to migrate to groundwater. For the short-term, excessive levels of nitrate in drinking water have caused serious illness and sometimes death. The serious illness in infants is due to the conversion of nitrate to nitrite by the body, which can interfere with the oxygen-carrying capacity of the child’s blood. This can be an acute condition in which health deteriorates rapidly over a period of days. Symptoms include shortness of breath and blueness of the skin.
By PuriTech Ltd based in Herentals, BELGIUM.
Direct reuse of wastewater in the product is not on the menu in the food and beverage industry, but the reuse of water for other purposes (e.g. washing) is now a priority. Most major F&B companies have made commitments to reduce their water consumption per unit of product, and reuse is an important part of the strategy for achieving this. Furthermore much of the growth of the industry is in emerging markets which typically have more limited, lower quality water resources than developed countries, creating water treatment challenges. In developed markets, emerging concerns about pharmaceutical by-products and other trace contaminants making their way into the product have lead to greater use of desalination technologies on the process water side. Value from waste propositions such as energy recovery, water reuse (not within the product) and materials recovery ensure that investment in water technology benefits the bottom line.
By Global Water Intelligence (GWI) based in Oxford, UNITED KINGDOM.
Packaged-food producers frequently use and then must discard large batches of cooking oil used in their process. Usually they drain most of the oil directly from equipment, but they must remove residual oil by regularly washing fryers, ovens, conveyors, and other machinery.
The oil mixes with the wash water and becomes part of the plants wastewater stream. Having oil in wastewater complicates the wastewater-treatment process by making it more expensive, more time-consuming, and less effective. Additionally. as with other manufacturers, packaged-food producers want to reduce waste and decrease the environmental impact of operations. That is why removing used oil and solids from wastewater before it is discharged is a priority.
By Oil Skimmers, Inc. based in Cleveland, OHIO (USA).
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