Process water (often referred to as service or as service water ), water that serves a specific technical, commercial, agricultural or home economics application. Process water is unlike that drinking water is not for human consumption, but should correspond to a certain minimum hygiene. In any case, it has to meet the technological requirements of the process. For example, cooling water must be such that the refrigeration units are not clogged with algae or lime. Some of the water must be very far purified (eg, fully demineralized water for the operation of steam turbines).
The still frequently heard term domestic water is technically out of focus and should be avoided in the interest of an exact expression. In the German Drinking Water Ordinance of 21 May 2001, the term does not appear hot water and in the official language of Austria and Switzerland, he is usually avoided.
Manufacturers and consulting engineers of process water technology are united in the " trade association, operation and use of rainwater eV " ( fbr ).
Separation of operational and drinking water supply
Separate operating and drinking water supplies are especially common in the industry. In the municipal sector does not separate from the drinking water service water supply is provided mostly. However, an increasing number of private households makes appropriate installations on their own initiative. Even today, it is useful to provide an operating water supply in New construction or modernization of houses. This could waste water costs are then used with gray water eg for toilet flushing and rainwater also for washing clothes in rising water and. In a more realistic account of the cost arises for individual houses under the current conditions but mostly no cost savings. For hotel facilities or newly-built settlements, however, a cost is to be expected.
In principle, it should be noted that the required quantity really best drinking water makes up only a fraction of the total water consumption. If a second water system installed for homes, the greatly reduced water consumption caused only a small envelope. Therefore, the standing water in the pipes can heat up, making it easier to come to germination and to the tap water may lose its quality as drinking water.