21.12.1988 Foundation of CUSS Chriwa Environmental Systems and Service GmbH to develop a new production range: Biological waste water treatment plants and plants for remediation of soil or ground water.
Construction and operation of a plant for remediation of polluted ground water with 10 extraction wells at a contaminated military site (former munitions factory). Several years of operation of the plant by CUSS (full service contract).
Construction and operation of a plant for polluted ground water remediation (50 m³/h) at a German car factory. Several years of operation of the plant by CUSS.
Development of an own computerized process visualization/electronic PLC controlsystems and our SCADA (System Control and Data Acquisition) system.
Construction of the first fully biological waste water treatment plant in the soft drink industry in Romania. Complex construction buildings due to earthquake area.
Construction of the tenth waste water treatment plant in the soft drink industry in Kiev for 3,000 m³ / day with discharge into a river. BOD discharge level <3 mg/l.
Construction of the first combined anaerobic/aerobic wastewater treatment plant for a brewery in Rostov/Russian Federation
Due to the rapid expansion of the CUSS team, a move into an own office building in Hambühren, Hehlenbruchweg was necessary.
To control the development of the CHRIWA group of companies a parent holding company has been founded. Every day approx. 200 employees are contributing directly or indirectly to the success and reputation of Chriwa and CUSS products, now.
Foundation of branches in Russia and Ukraine to process and support the local large-scale projects.