Industrial Wastewater Treatment
Industrial waste water contains various types of contaminants, depending on the industry and production area that it comes from. In order to prevent the contents from causing damage to bodies of water, companies either carry out waste water treatment in their own plants, or they send it to municipal sewage treatment plants for purification.
Recently, significant advances have been made in the development and implementation of production technologies that produce little or no waste water. Increasingly, they are replacing the traditional additive steps that are used at the end of production processes.
Using circulation, cascading usage, and partial stream treatment of waste water, watercourse protection can be improved and, at the same time, this has economic advantages for the company.
The industry is also working on reducing the contaminant loads in waste water. This is done by replacing toxic and environmentally damaging materials in production processes with less hazardous materials. Proven technical advances for reducing impacts include membrane technology and adiabatic evaporation.
In future, water recovery will become increasingly significant. Wastewater will no longer be considered simply as a source of impact on the "environmental resource of water"; rather, it will be seen as a production resource with its own intrinsic value.
Various examples of environmentally friendly production processes from different industries are included in this database. For example
• The textile industry: avoidance of waste water by dyeing polyester fibre threads in supercritical carbon dioxide (CO2).
• The paper industry:?paper production without waste water through complete treatment of process water in a circulating water treatment system.
• The circuit board industry: reduction of water consumption and waste water quantities by treating and reusing partial streams.







