In Vlissingen and at Amsterdam Airport Schiphol, Evides Industriewater owns and operates waste water treatment plants (WWTP’s) to handle the waste water produced at those sites. In Vlissingenthe industrial waste water originates from the chemical and petrochemical industries in the area, while the waste water from Schiphol is partly household by nature and partly the waste water from the foodstuff industry located in the area. These plants operate partly unmanned. They are remote controlled. In general, Evides Industriewater makes use of both classical aerobic purification technology and membrane technology.
In Delfzijl, Evides Industriewater is presently constructing an aerobic WWTP. This plant has been designed by our own process engineers and is based on an ultralow-loaded aerobic process to purify the saline waste water from industrial users located in Delfzijl. This is pure gain for the environment, because it makes effluent discharge into surface water a thing of the past. Handling the industrial waste water separately will relieve the existing sewage treatmentplant. Moreover, the redirection of the saline waste waters to the new WWTP render the effluent of the sewage treatment plant good enough for post-purification ( “polishing step”) to produce process water for re-use by the industrial clients.
Evides Industriewater also has an established track-record in treatment of percolation water (the waste water that seeps through a waste landfill and is collected from it). This water is usually contaminated with heavy metals as well as organic compounds that are difficult to break down, and characterised by a low carbon/nitrogen ratio. Evides Industriewater can treat this water using classical active sludge technology, or alternatively aerobic granular sludge technology.