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Ifat 2018

Water Efficiency in the Chemicals Industry in the Focus

| Editor: Alexander Stark

The world's leading trade fair for water, sewage, waste and raw materials management will take place in Munich from May 14 to 18, 2018.
The world's leading trade fair for water, sewage, waste and raw materials management will take place in Munich from May 14 to 18, 2018. (Source: Messe München)

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From May 14 to 18, 2018, the world's leading trade fair for water, sewage, waste and raw materials management, Ifat, will take place in Munich. The exhibitors and an extensive framework programme will provide information about new developments for an optimized water supply and the treatment of wastewater and liquid waste.

Munich/Germany — Since its premier in 1966, Ifat has grown into an international platform for companies that offer solutions to help deliver a sustainable approach to resources involving intelligent cycles. In 2016, 3,097 exhibitors from 59 countries presented their solutions on a surface of 230,000 m2. At the last event, the trade fair counted 136,885 visitors from 168 countries. The international nature of the trade fair generates interdisciplinary synergies for partnerships that aim to preserve and improve our quality of life and the state of the environment. Considering the fact that according to the World Health Organization (WHO) at least two billion people around the world must satisfy their thirst with contaminated water, this aspect is becoming increasingly important. And the climate change could make this situation even worse.

This raises the industry’s responsibility to handle water resources efficiently. Besides needing plenty of water, the chemical industry often produces in countries where water is scarce. However, it is well aware of its special responsibility: according to the German Chemical Industry Association (VCI) chemical companies meanwhile utilize every liter of water almost six times.

Chemical Water Treatment

But the chemical sector is not only a relevant water consumer, at the same time it develops tools for an efficient water management. At the environmental technology fair Ifat 2018 in Munich, the specialty chemicals enterprise Lanxess from Cologne will for example present its water treatment products, including ion exchange resins and membrane elements for reverse osmosis. Both technologies, often used together, remove pollutants and interfering substances from water. While the membrane technology is very cost-efficient for water with high salinity, ion exchange resins achieve a fine purification of water with low salt concentrations. Process and cooling water treated this way preserves industrial plants, as the demineralization and the low residual conductivity avoids scale and corrosion. However, ion exchangers and membrane technologies above all play an essential role in environmental protection. Example: in the Tiruppur region, the center of India’s cotton-processing sector, Lanxess products purify around 24,000 m3 of wastewater every day, which previously contaminated surrounding waters.

Interfering substances can also be removed from water and wastewater by adsorption. For this, Lanxess offers iron oxides. Donau Carbon from Frankfurt am Main will introduce its extensive range of activated carbons, which are for example based on coconut shells and are produced in the Philippines. Very practical: users can rent or buy mobile activated carbon filters in varied sizes and benefit from the company’s full service including exchange and disposal of activated carbon adsorbers.

Industrial Wastewater Treatment

The chemical and pharmaceutical industries pretreat their wastewater or even operate own treatment plants, as the often complex pollutant mixes would overstrain municipal treatment plants. Non-biodegradable substances are best degraded by oxidation. The advantage: no residue needs to be burned. Various exhibitors will showcase their systems for oxidative degradation: Enviro Chemie from Hesse developed a plant that uses hydrogen peroxide and UV radiation to eliminate pharmaceutical residues in wastewater from drug companies. Linde will demonstrate a system that employs ozone for the oxidative treatment.

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Another focus will be the biological water treatment. Especially for small to medium-sized companies, Linde offers a mobile system for the aerobic treatment with oxygen. For bacteria to reach a high degradation rate, it is essential to ensure good mixing. Here, mixers shall not only prevent the sedimentation of particles, but also offer low-shear blending in order not to destroy flocs. And in the anaerobic stage, turbulences on the surface of the water should be avoided to minimize oxygen injection. The mixing and aeration systems of Invent from Erlangen meet these high demands and additionally are robust enough for the mostly aggressive and saline wastewaters of the chemical industry.

Sludge as a Valuable Raw Material

Sewage sludge and sludge from industrial production often requires expensive disposal — although they contain valuable raw materials. In Munich, the Austrian plant manufacturers Kremsmüller and Kanzler Verfahrenstechnik will show how to recover recyclable materials and energy from sludge of any consistency. The heart of their plant is a modern thermal separation technology based on a thin-film evaporator.

More novelties for the chemical sector will be presented by 3M from Neuss, the Andritz Group from Graz, Currenta from Leverkusen and by many other companies of the more than 3,100 exhibitors. Their solutions for the water, sewage, waste and raw materials management help the industry further increase the resource efficiency and secure competitiveness.

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