SMALL AND DECENTRALISED WASTE-WATER TREATMENT TECHNOLOGIES
Following the implementation of a large number of central waste-water treatment plants within the European Union (Most urban territories are now covered with sewage systems, leading to a large waste-water treatment plant. The urban areas with no central sewage systems are few in number and will be covered soon. ) a new problem was identified.
There are numerous settlements in rural areas where a central treatment system is not financially viable. In many cases, the cost of connecting two or more settlements is many times higher than the cost of the plant itself. An example of such difficulties is those areas where houses have been built at different elevations. A solution can be found in decentralised treatment technologies, using small and affordable systems which combine efficiency with simplicity together with minimum operational and maintenance cost.
Dialynas SA is a company founded in 2003 on the island of Crete, Greece. The company focuses on the environmental field and, more specifically, on water and waste-water applications. The aim of our projects is to provide new innovative technology for environmental protection and water preservation. The company serves nationally in its implementation of water and waste-water projects as well as providing environmental consulting for the private and public sector. Dialynas SA is an official distributor of Orenco Systems.
Orenco Systems Inc (Oregon, USA) designs and manufactures advanced onsite (decentralised) waste-water technologies for individual properties and small communities — properties that are not hooked up to centralised sewers or whose sewers are failing or at capacity. The waste-water solutions include water-tight fiberglass tanks, in-tank filtration systems (effluent filters, pump vaults), secondary treatment systems (AdvanTex textile filters, intermittent sand filters, re-circulating sand filters), pumping packages, accessory items and advanced electrical controls. Such products and systems allow treated effluent to be returned harmlessly to the environment via drain field, lagoon, constructed wetland or subsurface irrigation.
Textile filters are considered to be the absolute innovation for such growth-treatment technology. There are multiple reasons for this, the increased surface area being one of them. The textile provides 2–5 times the surface area for processing micro-organisms compared with sand filters. This means that the same treatment can be performed in plants with a smaller footprint. Textile filters are very easy to operate and require minimum maintenance. They can serve capacities from one household to 5,000 people-equivalent treatment plants. At this time, more than 150 decentralised waste-water applications using this specific technology can be found in Greece. Effluent characteristics of the textile filters operation include BOD and TSS values of less than 20ppm.
We, the people of Dialynas SA, aim to contribute dynamically to the global effort of making the world a better place to live.
