Water Supply
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WATER SUPPLY Drinking water Process water Fully desalinated water Circulation water Water distribution A company of Bayer and LANXESS HISTORY OF WATER SUPPLY 1893 First water supply in Leverkusen 1909 Start of production of desalinated water in Leverkusen 1912 First process water supply at Uerdingen site and also construction of first cooling tower to conserve cooling water 1917 Construction of the first drinking water supply and a softening plant in Dormagen 1925 Construction of the first river water plant in Uerdingen 1925 Start of centralized, combined heat and power generation in Leverkusen 1934 Separation of process and drinking water at the Leverkusen site 1939 Construction of the first desalination plant at the Uerdingen site 1950 Completion of the river water plant in Leverkusen begun during the war 1957 Construction of the Hitdorf water plant and the long-distance pipeline to Leverkusen 1958 Maximum process water production of 10,000 m³/h achieved in Uerdingen 1960 Construction of the Monheim water plant and connection to the Leverkusen water network through a long-distance pipeline to Hitdorf 1961 Construction of the first cooling tower in Dormagen 1962 Production of 400 m³ of fully desalinated water per hour in Leverkusen 1969 Reconstruction of the Leverkusen river water plant 1973 Introduction of the fluidized bed process in fully desalinated water production for reducing consumption of hydrochloric acid and sodium hydroxide 1975 Construction of a partial stream filter in Uerdingen to reduce the contaminant content in circulation water 1983 Use of waste heat in the Uerdingen fully desalinated water plant for more efficient degassing 1987 Conversion of a Dormagen fully desalinated water plant to the fluidized bed process 1994 Modernization of the Hitdorf drinking water plant 1997 Reconstruction of the central control center in Leverkusen 2002 Commissioning of the first GRP cooling tower in Uerdingen 2005 Commissioning of the pilot plant for treating additional cooling tower water by membrane technology in Uerdingen 2006 Construction of the Monheim – Dormagen Rhine culvert for supplying process water 2008 Reorganization and streamlining of the water supply 2011 Renovation of the control system for the Uerdingen river water plant 2013 Construction of a new cooling tower in Dormagen 2014 Completion of the renewal of the complete control system in Leverkusen 1 WATER SUPPLY – Introduction INTRODUCTION CURRENTA consumes approximately 400 million cubic meters of water every year for cooling, generating steam and rinsing, and for use as a solvent and drinking water. An overview of our water: Drinking water Process water Circulation water Water just like what comes out of the Clean water that is not monitored in Conditioned process water that is faucet in private households. Quality line with the German Drinking Water cooled in cooling towers and used in line with the German Drinking Ordinance, for cooling, cleaning, etc. multiple times. Water Ordinance. Surface water Bank infiltrate Groundwater Fully desalinated Drinking water Process water Circulation water water Boiler water Fully desalinated water Boiler water High-purity water, basis for steam Similar to fully desalinated water, generation and raw material for but conditioned and pre-heated. production. WATER SUPPLY – Introduction Water is our most valuable foodstuff. It is essential for agricultural operations and thus also for the production of the majority of foodstuffs. We use water every day for personal care, for hygiene and in our households. And last but not least, clean water is also crucial for most industrial processes. It is therefore understandable that the first reason for passing the European Water Framework Directive (EU-WFD) reads: “Water must be managed and protected. It is not merely a consumer product, but a precious natural resource, vital to future generations as well as our own.” Despite its vital importance, we take it for granted that the required amount of clean water will come out of the faucet as soon as we turn it on. To ensure that this is the case at CHEMPARK and the surrounding communities, CURRENTA’s water supply staff are faced with a large number of technical challenges each and every day. And since the natural water supply – be it surface water or groundwater – is constantly replenishing itself, but not to the extent that we would like, we conserve this valuable resource. The water that we treat is a balanced mixture of surface water (from the Rhine, to be precise), bank infiltrate (also from the Rhine) and a small amount of groundwater. This variable water sourcing also ensures exceptional security of supply. As a competence center for pure water for the chemical industry, CURRENTA Water Supply reliably provides the three CHEMPARK sites in Leverkusen, Dormagen and Krefeld-Uerdingen with the volume of water they require, in whatever quality they desire – a total of 400 million cubic meters per year, which is more than the capacity of the Tegernsee lake. Quality ranges from process water to drinking water that complies with the German Drinking Water Ordinance and high-purity fully desalinated water. Through our own long-term water rights, reliable production facilities and highly qualified staff, we safeguard security of supply for our customers at CHEMPARK and also in the neighboring communities. The Water Supply segment provides more than just water, however. It also provides support in all issues relating to water legislation, keeps you informed of current issues and represents you in dealings with the authorities and institutions. 02 03 WATER SUPPLY – Prudent water management PRUDENT WATER MANAGEMENT When it comes to extracting, using and treating water, CURRENTA Water Supply undertakes wide-ranging activities to protect waterways and the environment. Protecting waterways together To ensure it remains possible to supply clean water in the Precise knowledge of these correlations are necessary long term using treatment methods that are in harmony before a well can be drilled, for example. At the same with nature, CURRENTA Water Supply has joined forces with time, we are in close contact with the relevant authorities, trade associations (for example the IAWR – International because the legal situation governing water always Association of Waterworks in the Rhine Catchment Area) to demands collaboration with the local authorities protect waterways, because “Protecting the water situation responsible. Monitoring groundwater flows is also [...] will have economic benefits [...]” (EU-WFD). mandatory. CURRENTA also maintains its own partnerships with agricultural firms to prevent any impairment of water quality before it occurs. Thanks to a closely linked groundwater measuring network and using hydrogeological models, we monitor groundwater flows around CHEMPARK and safeguard a reliable water supply while also protecting the groundwater. CURRENTA water managers also investigate the conditions in the ground and create detailed maps showing the interaction and behavior of groundwater flows in relation to the level of the Rhine and layers of soil. Monitoring inside the cooling tower 04 Avoiding environmental impact Using energy efficiently When taking water from wells, we are generally extracting We and our staff systematically use every opportunity Rhine bank infiltrate that quickly replenishes itself. This to save energy. In the last few years, Water Supply has comes from the river through the sand and gravel near the achieved an annual increase in efficiency of approximately bank. Adsorption and biological decomposition processes one to two percent. Employees make their own mean that it is naturally cleansed of many unwanted suggestions for improvements, which is a great help to us ingredients. In this way, we are also able to conserve in continuously improving our technology and reducing groundwater resources. energy consumption. Our industrial cooling systems apply the compression principle and operate many times We monitor the water quality of the Rhine. After all, this more efficiently than refrigerators or air-conditioning has a direct impact on the quality of drinking and process systems. While a typical household refrigerator generates water at CHEMPARK and the treatment it requires. The four kilowatts of cooling capacity from one kilowatt hour used and cleaned cooling and process water that we feed of energy, our plants achieve a cooling capacity of 150 back into the Rhine is noticeably different to river water. kilowatts from the same energy. It is considerably clearer. However, it is also somewhat warmer. To minimize the warming of the Rhine, we also use closed circuits with cooling towers. We replace the water lost through evaporation. However, since this is only a negligible amount, this also enables us to reduce the amount of fresh water we extract. 05 WATER SUPPLY – Water extraction plants WATER EXTRACTION PLANTS CURRENTA Water Supply extracts cooling and process water primarily from river water plants on the Rhine, while wells form the basis for the production of drinking and fully desalinated water. 06 Since we have such a wide range of very variable “sources” for our water, we have to transport it to the treatment plants using different extraction units. We extract surface water from the Rhine using intake structures, while bank Humus infiltrate and groundwater are taken from wells. We use both horizontal and vertical filter wells. Meadow loam At-rest water level Operating water level Collection shaft Intake structures