OSMO MEMBRANE SYSTEMS GMBH

Recovery of acids and acidic rinse waters Additionally to the pickling bath treatment by microfiltration and ultrafiltration, the recovery of acid becomes more and more important. Additionally to sulphuric and hydrochloric acid, also mixed acids (HF / HNO3) can be recovered. The first step of the acid recovery is mostly a sludge separation by microfiltration. Downstream, diffusion dialysis, electrodialysis or nanofiltration is used for metal separation. For the treatment of rinse waters, OSMO Membrane Systems GmbH offers reverse osmosis or electrodialysis plants.

Oil-water-separation / degreasing bath treatment Treatment of oil-water-emulsions for surface treatment (e.g. pre-treatment of metal parts for ed-paint), recovery companies (e.g. for the treatment of alkaline emulsions for part washing), and so on. Separation of emulgated oil particles and recycling of the cleaned liquid into the degreasing bath Concentration of oil-water-emulsions for disposal Cleaning of the oil-water-mixture for indirect lead-in Principle of this process: Aqueous degreasing baths content a tenside combination, alkalines like soda, caustic soda, phosphate, silicate and further complex molecules. The degreasing bath is loosing its efficiency, when to oil content reaches some g / litre. External pollutions also degrease the degreasing efficiency. By ultrafiltration, the oil content can be separated from the degreasing bath and the oil will be collected in the concentrate. The degreasing bath will be dumped into a buffer tank and then pumped in the working tank of the

Rinse water treatment with nanofiltration (NF), reverse osmosis (RO) or electrodialysis (ED) By treatment with nanofiltration, reverse osmosis and electrodialysis, your rinse water can reused a couple of times. By the membrane plant, the pollution of the rinse water is separated and the particles are concentrated. Thereby the water costs and the disposal costs can be minimized. Additionally, materials in the water can be recovered much more easier by concentration.

Anolyte station Individual approaching flow of each dialysis cell be measuring each single volume flow.... ... constant anolyte quality by high-resulting measurement of conductivity.

Ultrafiltration of kathodic deposition paint The filtrate of the ultrafiltration is added to the immersion bath by a spray ring, which is installed directly over this bath. So, the recovery of the remaining color is possible and by separation the color particles, painting defects can be avoided. In the last spray zone, organic solvents from the ultrafiltration are washed away be demineralised water. Concentrated with these solvents, the water is leaded into the color bath. The process is a closed loop without any waste waters. The paint bath can be contaminated with pre-tretment chemicals like e.g. phosphates, chlorides, chromates. so, a part of ultrafiltrate has to be leaded out to avoid concentration of the paint bath with these chemicals. If no ultrafiltration is used, big amounts of waste waters will arise, which are difficult to dispose. Our ultrafiltration plants are customized in membrane are, retention rate and membrane type.

Flat dialysis cells Flat dialysis cells of OSMO Membrane Systems GmbH are designed very robust and without any dead spots, to avoid sedimentation of the painture. The membrane is is very pressure resistant and tearproof. The fluent properties are optimized according to the degassing properties. Design in 3 standard sizes Aniones-exchange-membrane with a high permselectivity Support material PP Robust design with height-adjustable mounting Anode material 1.4571 (standard), treated titanium on request Cell design with PP and P E

Round dialysis cells The cylindrical electrode is mounted into the cylindrical membrane, which is hold by a strong pervious pipe from the inside and protected by a mesh from the outside. The anolyte is leaded through the anode pipe through the bottom of the electrode and flows constantly through the toroidal gap between electrode and housing to the anolyte outlet. By the standardized membrane support, a multitude of membranes can be used. The pipe cells of OSMO Membrane Systems GmbH are easy to handle, because even a 2m long electrode only weights 8 kg. Advantages of the OSMO round dialysis cells: Can be opened without tools by quick release fasteners Anode pipe made of seamless thick-walled stainless steel 1.4571 (standard) – treated titanium available on request Continuously anolyte inflow and outflow as well as selective anolyte distribution Anode can be turned inside the membrane

Degreasing bath treatment Ultrafiltration is established for a long time for applications like treatment of emulsions, degreasing baths or craft detection oils. With ultrafiltration, oil and dirt particles are separated. So, the particle-free filtrate can be used for degreasing again. According to the recommendations of suppliers for degreasing chemicals tensides are added to the degreasing bath. So, lifetimes up to 3 to 6 months can be reached for degreasing baths. Osmo Membrane Systems GmbH offers an upgrade for your degreasing plant in replacing the polymer pipe modules by ceramic modules. Ceramic modules are more temperature resistant, chemical resistant and changing pH-values. On the one hand, the separation efficiency will be increased and on the other hand, the lifetime of the degreasing plant will be increased significantly, because polymer modules have to be changed much more, depending on the application. The costs for the upgrade are equal to the costs for working with poly

Recovery of flexoprint dye Picture: printing dye (red); ultrafiltrate (orange); nanofiltration permeate (clear) Application: Conditioning and concentration of cardboard printing dyes (flexo print), e.g. paper bag manufacturing, corrugated board manufacturing. Conditioning of the rinse waters by ultrafiltration(UF): Recovery and recycling of dyes, separated by tonality Further conditioning of the permeate by nanofiltration(NF): Recovery of the rinse water Further conditioning of the UF-concentrate by evaporation / distillation as pre-stage for external disposal Advantages of the process: Recovery of dyes separated by tonality is possible and established Recirculation of the rinse water is possible and established Reduction of the waste water amount At existing waste water treatment plants (based on precipitation) amounts of sludge can be reduced enormously Compact and modular design Fully automized process - low personnel costs High degradation rate and efficiency (concerning CSB, Cu,

Landfill leachate treatment Landfill leachate must not be leaded to the canalization or the recipient untreated. According to the guidelines of environmental protection, waste water hast to fulfill limit values of introduction and reusable water has to be cleaned and separated to be used as process water or maybe as drinking water. So, also landfill leachate – as many other industrial waste waters, too – has to be treated in a way, that introduction into a downstream sewage plant or recipient is according to the law. The multitude of ingredients of the landfill leachate has to be concentrated as much as possible, so that they can be bailed compact and without negative results for the environment. For the treatment of landfill leachate we offer the following processes of conditioning: Treatment of the leachate to reach recipient quality and concentration of the remaining ingredients in a way, that they can be leaded back to the landfill considering the water balance. Water analysis of