WATER SUPPLY

Clean water for employees and production

A company of and LANXESS CLEAN THE EXTREME

CURRENTA Environment is an expert service provider and ensures seamless production processes in ’s largest chemical park at its three sites in Leverkusen, Dormagen and -Uerdingen.

The company offers its customers, both within and outside CHEMPARK, a customized portfolio of services in core fields such as training and further education, infrastructure, safety and security, utilities, waste management, technical services and analytics.

We have our own state-of-the-art waste management facilities, an excellent disposal network, reliable water and refrigeration supply, and experienced personnel from the chemical and pharmaceutical industry, all of which enable us to meet the disposal requirements of our customers efficiently and cost-effectively. We supply clean water of the desired quality (drinking, process, cooling or fully desalinated water) and treat your biodegradable wastewater, incinerate and dispose of hazardous waste, and clean containers. We also provide refrigeration products for the CHEMPARK sites. We provide advice and support in the construction and operation of waste manage- ment facilities and in the collection and recycling of valuable materi- als. Our portfolio covers individual services and complete solutions that meet the statutory requirements governing the safe disposal of waste and wastewater that is particularly difficult to treat. DRINKING WATER

Well-protected, constantly monitored

WATER SUPPLY – Drinking water

Usage YOUR CONTACT We provide drinking water for the employees of the companies based Technology at CHEMPARK to use as such. In some Sebastian Reißner cases, it is also used as a raw material Phone: +49 (0)213 351 21024 for production. When required, we also E-mail: [email protected] supply local municipal water providers.

Boundary conditions Our drinking water complies with the Drinking Water Ordinance. Pressure • Leverkusen 4.5–6.0 bar • Dormagen 5.0–8.0 bar • Krefeld-Uerdingen 3.0–6.0 bar

Origin of the drinking water Leverkusen: vertical and horizontal filter wells, bank infiltrate Dormagen: vertical filter wells, groundwater Krefeld-Uerdingen: The site is supplied Hitdorf drinking water well by the municipal water provider.

Treatment There are two drinking water plants in Leverkusen (Hitdorf, Süd/Werthkette) and one drinking water plant at the Typical treatment process: Dormagen site (Tannenbusch). Extraction aeration filtration activated carbon where necessary preventive chlorination release into network

03 PROCESS WATER

Water supply for production WATER SUPPLY – Process water

Usage YOUR CONTACT Process water is used by the companies at CHEMPARK for various purposes, for Technology example as a raw material for production Sebastian Reißner or for cooling. Phone: +49 (0)213 351 21024 E-mail: [email protected] Boundary conditions Pressure • Leverkusen 4.0–5.0 bar • Dormagen 4.0–6.0 bar • Krefeld-Uerdingen 3.0–4.0 bar

Origin of the water Direct extraction from the by two river water plants in Leverkusen and Krefeld-Uerdingen, and also through a large number of horizontal and vertical filter wells (in Leverkusen, Dormagen and Krefeld-Uerdingen)

Treatment Well water: generally no treatment View into a horizontal filter well required River water: rakes screens sand filtration stabilization where necessary release into network

Special features The process water networks at the Dor- magen and Leverkusen sites are linked by a culvert pipeline (underground Rhine crossing), enabling them to share process water.

05 FULLY DESALINATED WATER

Basis for combined heat and power generation WATER SUPPLY – Fully desalinated water

Usage YOUR CONTACT Fully desalinated water is primarily used in power plants for generating steam for Technology combined heat and power generation. It Sebastian Reißner is also used in production. Phone: +49 (0)213 351 21024 E-mail: [email protected] Qualities Fully desalinated water– fully desali- nated and degassed, based on VGB guideline for feed water Conductivity < 0.2 µS/cm

Treatment (typical) Cationic exchangers deacidifying anion exchangers degassing mixed bed storage stabilizing where necessary

Boundary conditions Pressure • Leverkusen 5.0–6.0 bar • Dormagen 5.0–7.0 bar A treatment line in Dormagen • Krefeld-Uerdingen 4.5–6.0 bar

Full desalination plants Seven full desalination plants in Le- verkusen, Monheim, Dormagen and Krefeld-Uerdingen, a conditioning plant for boiler feed water in Leverkusen

07 CIRCULATION WATER

Efficient cooling WATER SUPPLY – Circulation water

Usage YOUR CONTACT Our customers use circulation water as cooling water. After use it is fed back Technology and cooled down in cooling towers. It Sebastian Reißner is then available again to be used for Phone: +49 (0)213 351 21024 cooling. The small volume of water lost E-mail: [email protected] through evaporation in the cooling tower is filled back up.

Treatment Filtration of a partial flow cooling down in cooling tower stabilizing disinfection regular purging of the accumulated salts

Boundary conditions Pressure • Dormagen 5.0–7.0 bar • Krefeld-Uerdingen 3.5–7.0 bar Temperature 15–30 °C Measuring inside the cooling tower

09 WATER NETWORKS

Wide-branching distribution WATER SUPPLY – Water networks

Leverkusen YOUR CONTACT Drinking water • Overground 1.3 km Technology • Underground 96.0 km Sebastian Reißner Process water Phone: +49 (0)213 351 21024 • Overground 5.3 km E-mail: [email protected] • Underground 100.4 km Fully desalinated water • Overground 21.0 km • Underground 9.1 km

Dormagen Drinking water • Overground 0.4 km • Underground 70.4 km Process water • Overground 1.3 km • Underground 103.5 km Fully desalinated water • Overground 2.3 km • Underground 20.8 km Circulation water • Overground 2.2 km • Underground 21.2 km Construction site for the process water culvert under the Rhine near Dormagen Krefeld-Uerdingen Drinking water • Overground 0.2 km Long-distance water pipelines • Underground 44.7 km • Long-distance drinking water pipeline Process water Hitdorf – Leverkusen • Overground 5.4 km • Underground 43.8 km • Long-distance process water pipeline Fully desalinated water Monheim – Hitdorf – Leverkusen • Overground 16.9 km • Process water culvert Monheim – • Underground 4.7 km Dormagen Circulation water • Overground 1.7 km • Underground 4.4 km

11 Published by Currenta GmbH & Co. OHG 51368 Leverkusen Germany www.currenta.com

Last revised: May 2014