Outotec Industrial water treatment solutions ®
Outotec® Industrial water treatment solutions Outotec industrial water treatment (IWT) provides tailored water treatment solutions to produce water that meets environmental discharge concepts, maximize water recycling for reuse, while enabling recovery of valuable elements and reducing water and energy consumption. Benefits Minimized capital expenditure through optimized process design Reduced water consumption and abstraction via treated water recycling With a long tradition in applying and investigating Improved productivity and product quality water treatment processes for mines and metallurgical plants, Outotec now offers efficient, sustainable and Improved quality and reduced volume of best available process solutions and technologies for the treatment of industrial process and wastewaters. through secured and clean process water generated sludge Reduced chemical usage via efficient process control Global service 002 Outotec Industrial water treatment solutions IWT solutions combine water treatment and wet chemistry Outotec has a long history in hydrometallurgy and this Outotec's approach to industrial water treatment broad knowhow has now been transferred into the combines expertise relating to water treatment and wet field of industrial water treatment in order to provide chemistry. Outotec provides world leading industrial customers water and capital water treatment solutions, which are treatment processes. Outotec has expertise on the with solution-driven industrial built on using Outotec’s existing technologies and whole mining and metallurgical production chain and proprietary equipment. Outotec technology selection life cycle, leading to ability to offer solutions that are expertise is based on laboratory test programs, based on innovative, sustainable and best available conceptual and feasibility studies, basic and details technologies. engineering, technology-specific equipment supply, training, erection supervision, start-up assistance, and Tightening environmental standards, together with follow-up and technical support services. reduced water availability leads to the need for efficient water treatment solutions. Outotec strives to build Outotec also offers Operation and Maintenance (O&M) long-term cooperation with the customer in order to solutions for industrial water treatment plants to ensure that they receive the very best solution for their optimize the treatment process and improve the plant operating environment. We know that every plant and performance. process has its own process requirements and strive to provide tailored solutions to specific needs. Outotec Industrial water treatment solutions 003 The process of finding a suitable solution for a mining and metallurgical water treatment and management Outotec offers: related challenge starts with Outotec analyzing and nn Tailor-made solutions from assessing customer and process requirements in technology package to turn key order to identify the relevant water treatment and nn Innovative and proven technologies management issues and define targets. Following nn Laboratory and pilot tests the analyzes and assessment of the water treatment nn Concept and feasibility studies and/or management case, thorough research is carried nn Basic and details engineering out by water experts in order to assess available nn Proprietary and key equipment supply solutions and discuss their suitability with relevant nn Commissioning and start-up services process experts in order to find the best potential nn Spare parts conceptual solutions. nn Shutdown maintenance services nn Process guarantees In the next step, process modeling is carried out using Outotec HSC SIM process simulation program in order to see the effects of the suggested concept solution on the whole process flow sheet. The other purpose of the modeling is to optimize, find and evaluate different processing options. When a suitable processing option has been established, laboratory testing can be carried out in order to prove the suitability of the proposed processing option. Tailored solution through research and development Outotec’s unique research centers comprise state-ofthe-art research facilities capable of piloting plants from bench to industrial scale. Building a process solution usually start with physical modeling of the equipment, which is followed by chemical testing and Once suitability of the proposed processing option has been proven, technical and economic feasibility of the proposed process concept will be evaluated. The overall aim is to construct the most economically and technologically feasible solution with optimized performance. Depending on the feasibility of the process concept, process engineering can be commenced, which can be followed by equipment investment decision. Building industrial water treatment solution: Identify issues & define targets Search & find potential solutions Carry out process modelling Carry out laboratory testing Evaluate technical & economic feasibility Engineering Construction and delivery O&M piloting in laboratory environment. Fluid dynamical analysis and mechanical design finishes off the proprietary equipment design. In line with the results of the equipment design, an efficient and coherent solution combining all the relevant equipment is designed. 004 Outotec Industrial water treatment solutions Typical IWT applications Waters and wastewater within mining and metallurgical Outotec industrial water treatment industries contain elements such as heavy metals (Cu, solutions are tailor-made for: Fe, Mn, Zn, etc.), arsenic, sulfate, calcium, magnesium, nitrates, solids, salts and acidity, which require nn Non Ferrous metal concentrators treatment prior to discharge to the environment and/or nn Gold processing and concentrator plants reuse within the processes. nn Non Ferrous smelters and refineries nn Iron and Steel industry Outotec offers a wide range of effluent treatment and nn Acid Mine Drainage (AMD) in different mining sectors water management solutions for industrial applications. nn Oil shale/oil sands Typical Outotec industrial water treatment solutions nn Ferro Chrome industry include: metal removal and recovery, neutralization, nn Coal mines and washeries arsenic removal, sulfate removal and oil removal. Other areas where Outotec has compiled solutions and Treatment of metal containing effluents carried out research include: membrane technology, electrochemical water treatment, halide removal, When metals enter the treatment process, they are nitrogen magnesium in a stable, dissolved form and are unable to form removal and water reuse and recycling process suspended solids. The goal of metal containing effluent solutions. treatment is to adjust the pH via raising the hydroxide and phosphorus treatment, ion concentration of the water so that the metals form insoluble precipitates. Once the metals are in solid or insoluble form, they can be easily removed, leaving the water with low metal concentrations. Outotec Industrial water treatment solutions 005 The degree of precipitation of metal hydroxides relates The behavior of metals in aqueous solution is controlled directly to the hydroxide ion concentrations i.e. pH, but by their chemical speciation, i.e. the molecular and the minimum solubility and the pH required for achieving ionic species that they form. Metal cations (Mz+) will it varies with the metal species and the precipitation hydrolyse to form complexes with the hydroxide ion format (type of alkali reagent) in question. Furthermore, as a function of pH and the forming complexes can co-precipitation and suitable precipitation enhancers be cations, neutral molecules, as well as anions. The can improve the treatment efficiency. A condition for different complexes formed are mainly governed by the successful precipitation is that the metal salts formed valence of the metal (Z+) and metal ion concentration are so insoluble that any residual concentration of in the solution. dissolved metal ions fulfills the requirements. Mine Water treatment Water treatment Mine water Water recycle Process effluent Ore and fresh water Water treatment T ailings pond Water recycle Water recycle Water treatment Water treatment Water recycle Water treatment Tailings Concentrate Concentrate Example of concentrator water treatment solution 006 Outotec Industrial water treatment solutions Iron sulfate Lime milk Flocculant Arsenic stream Ferric arsenate slurry Treated water for discharge and re-use Air Air Air Outotec Larox PF Ferric arsenate filter cake Filtrate water Example of ferric arsenate precipitation solution Arsenic removal from effluent Arsenic-rich liquids require treatment prior to discharge or reuse as process water. The most typical chemical precipitation As-removal processes include: nn Calcium arsenate precipitation (Ca3(AsO4)2) nn Calcium arsenite precipitation (Ca3(AsO3)2) nn Basic ferric arsenate precipitation (FeAsO4*xFe(OH)3) nn Scorodite precipitation (FeAsO4 2H2O) . Arsenic precipitation with lime is to date perhaps the most straightforward and cost-effective way of removing arsenic from solution. However, the stability of the generated calcium arsenite or arsenate sludges is poor. An effective alternative to lime precipitation is provided by ferric precipitation (Fe2(SO4)3), chemical process that generates ferric arsenate sludges, out of which the crystalline scrorodite or ferric arsenate dihydrate (FeAsO4 2H2O) is the most stable form. Precipitation of scorodite requires, however, highly controlled process conditions. . Any precipitation-based process will benefit from advanced equipment technology and process design, but best results are achieved using customer and process-tailored equipment and process control, which allow stable, safe, reliable and cost efficient operation of the process. With correct process design significant benefits are obtained, including: nn Lower chemical consumption nn Less scaling → less maintenance nn Stable pH profile, allowing precipitation reactions to take place in the reactors and providing stable effluent nn High quality sludge with uniform chemical composition → long-term safe storage of As residues nn High quality solid residue with minimum moisture → lower disposal costs and higher water retention nn Process effluent with low, residual As concentrations and low solids carry over Outotec Industrial water treatment solutions 007 008 Outotec Industrial water treatment solutions Proprietary equipment within IWT solution The technology package combined with Outotec proprietary equipment ensures smooth process operation Outotec OKTOP® Reactor – the best solution for your process by eliminating unnecessary bottlenecks and shutdowns. Outotec has been building reactors for various Outotec equipment solutions are made to optimize hydrometallurgical metallurgical results and to ensure reliable operations. forty years. We have experience both as technology Outotec equipment are designed to be the most providers and as plant operators. Outotec has installed economical solutions for the entire lifetime of your plant. hundreds of reactors for leaching, precipitation and Furthermore, we can guarantee equipment performance. metal recovery. Outotec's expertise provides you with A complete technology transfer package with proprietary superior performance, reliable operation and ease of equipment from Outotec ensures that you get a coherent maintenance in each OKTOP Reactor. process with a maximal financial return. Industrial water treatment takes advantage of three separate Outotec proprietary equipment types, namely reactors, thickeners/clarifiers and filters. All of the three different equipment types include several different types. Furthermore Outotec industrial water treatment takes advantage of the Outotec Courier online elemental analyzers for process control within the solutions. applications for more than Outotec Industrial water treatment solutions 009 We know that every plant and process is unique, so each After decades of experiments, design work and OKTOP Reactor is designed for its specific purpose. operational experience, Outotec now presents the Process outcome is the guiding principle for reactor OKTOP Reactor Family. The Reactor Family includes design and each reactor is tailored to deliver the best several different reactors and the choice will be based possible yield. on the application in question. The OKTOP Reactors have been successfully applied in solid-liquid, gas-liquid, The combination of years of R&D and a wealth of data gas-liquid-solid and liquid-liquid systems for leaching, collected from both our own and customers' plants have precipitation, crystallization, oxidation, reduction and enabled Outotec to develop a family of reactors using solvent extraction. modular design principles. The result is five series of reactors with modular design, which can be tailored for each individual application. Modular design enables us to select the optimum reactor solution quickly and effectively. Outotec will provide you with a complete reactor package, with flexibility for you to choose the accessories you need. For us, the reactor is more than just a tank. It is the heart of a successful operation. 010 Outotec Industrial water treatment solutions Outotec® Thickening technologies Outotec is a global leader in the design, fabrication and supply of thickening and clarifying solutions for the waste water treatment industries. The revolutionary Outotec® High Rate Thickener concept has pioneered and redefined the methods of clarification and thickening around the world. With more than 1,400 thickener installations in over 70 countries in the last 20 years alone, Outotec knows how to provide process solutions to enable longer-term cost benefits for thickening and clarification duties and paste applications. Outotec thickeners include a number of innovative features in their design. Special attention is given to the design of feedwells, rake profiles, drive systems and control strategies to meet the challenge of dewatering materials that are often problematic for normal thickeners. Our experience in testwork, design, operation, installation and service of thickeners and clarifiers is renowned throughout the world and is your guarantee of quality. Outotec® Filtration solutions Outotec is a leading innovator, developer and supplier of solid-liquid separation products, which are used as a part of the industrial water treatment solutions. Outotec Larox filters are built to last, delivering maximum production performance, availability and the best process results at the optimum operating cost for a wide range of processes and process environments. The broad product range includes filters and solutions based on several different filtration principles, variety of sizes, capacities and related services, all performing in the toughest operating conditions. A wide range of test filtration solutions and high-tech automation systems are also available. Outotec Industrial water treatment solutions 011 Outotec life cycle services improve water treatment process performance and guarantee plant availability Outotec offers comprehensive Services and Operation & In order to guarantee high-level performance, water Maintenance solutions for water treatment concepts. treatment operation and maintenance concepts are A long-term partnership with Outotec ensures that the built using a top-down and bottom-up approach, where full value of customers' operations and equipment is the customer’s needs and selected key performance realized. Outotec O&M solutions include for example: indicators are also considered on a strategic level. nn Developing the maintenance Outotec's global network of service centers is dedicated strategy and annual planning to providing continuous technical and maintenance Process support as well as plant, support. Outotec service centers offer customers equipment and field services unparalleled access to our broad knowledge base and nn Process optimization operational experience. nn Water and energy assessments nn Quality, safety and environmental systems Water treatment operation and maintenance concepts nn Supply chain management for are generally incorporated into other operational spare parts and chemicals services. This enables a comprehensive tie-in between Information Technology Management the core process and the water treatment plant. This system, including remote control, arrangement ensures the efficient performance of monitoring and performance reporting the core process, while minimizing the cost of water nn nn treatment. Finland, September 2013. Outotec provides leading technologies and services for the sustainable use of Earth’s natural resources. As the global leader in minerals and metals processing technology, Outotec has developed many breakthrough technologies over the decades. The company also provides innovative solutions for industrial water treatment, the utilization of alternative energy sources and the chemical industry. Outotec shares are listed on NASDAQ OMX Helsinki. [email protected] www.outotec.com Copyright © 2013 Outotec Oyj. All rights reserved.
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