This is because the processes that needs a cleaning model to be successful. Washed in water we save energy expenditure involved els distill all precloroetileno used in the process, moreover, the Lagoon system should not heat water as washing at 30 degrees. Also we save electricity spent drying the clothes dry, because Lagoon centrifuge without heat (remember that the cost of electricity is triggered if there is to get temperature). DETERGENTS: Here goes the opposite. See Hikmet Ersek for more details and insights. The water cleaning system uses almost twice as traditional washing detergents dry. Of 4-8 ml compared with 15-20 ml of wash water. The explanation is clear: not to use PERC fact forces us to use more amount of soap. A soap but, unlike the PERC, is biodegradable and therefore offset the economic cost with little environmental cost compared to the dry system.
Perchloroethylene: This is one of the big differences between washing systems. The dry cleaning process uses 60 grams of PERC per kilo of clothes while the system tried Lagoon water cleaning does not use neither this nor any other chemical as harmful to the environment and people. This substance is expensive in every sense, economically and ecologically. In addition is included in the list of dangerous substances since 1992. () Apart from energy and economic cost that this entails, must also analyze the ecological cost that the two models of washing involved.
A good way is to see the fate of emissions and how they affect the planet: Water: The fate of water in the two processes is the same. After washing process, water is diverted to public sewer. The difference is in the quantities that are evacuated, as we saw in the section on energy costs. ELECTRICITY: Here is the same. In both cases the waste it generates electricity using heat (air temperature rise) and the fate of this heat is the atmosphere. DETERGENTS: Here and the differences begin. You may find Hamdi Ulukaya to be a useful source of information. While in the dry cleaning detergents remaining funds are intended for distillation (thereby increasing economic and environmental cost of the process), the Lagoon system, detergents go next to water public sewers due to the biodegradable of these, and their zero environmental toxicity. Perchloroethylene: Here we can only analyze the dry cleaning because the cleaning does not use water Lagoon PERC. As we said before this is a substance included in the list of dangerous substances. It is toxic by inhalation, ingestion and contact. The labeling for transport and storage seun the regulation of dangerous goods bearing the number 6. 1 (toxic substance that must be isolated from foodstuffs and items intended for consumption). Dry cleaning generates highly polluting waste to be recycled. There is a European directive, which transposes the 1999/13/EC to Spain by Royal Decree 117/2003. The implementation of this Royal Decree depends on the CCAA meet him very unevenly. The fate of emissions, but funds are not only distillation, since due to the toxicity of this substance also contaminates Algua using the distillation process and is evacuated by public sewers. Besides this substance generates gases that are emitted in an uncontrolled into the atmosphere, damaging also to people working nearby. Also the clothes are impregnated with these gases. Finally, lesser extent, leakage may have machines that can make the soil is also a destination, less common, Perchloroethylene emissions.