Water Specialists for the Petrochemical Sector. ovivowater.com. creating value in water through innovation, creativity and expertise

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1 Water Specialists for the Petrochemical Sector creating value in water through innovation, creativity and expertise ovivowater.com

2 Ovivo - Industrial Services A New Global Force in Water As society and the global economy demand more and more from water, there is a growing requirement for ever more specialist applications to manage clean water, to create specialist process waters, to treat wastewater, to extract energy from wastewater and to champion the reuse of water. The 2010 merger of Eimco Water Technologies, Enviroquip. Aqua Engineering and Christ Water Technology plus many smaller specialist firms allows Ovivo to offer a unique combination of advanced solutions, probably the most significant application knowledge base in the world and some of the best brains in the business. Ovivo - creating value in water through innovation, creativity and expertise in clean water, process water, wastewater treatment, wasteto-energy and water reuse markets across 5 continents. Ovivo aims to become the water partner of choice for clients in the public and private sectors and the leading source of water expertise for engineers and consultants across the globe. For further information, visit ovivowater.com Ovivo - bringing water to life

3 Water Specialists for the Petrochemical Sector Our Role in your Industry Petrochemicals can be a valuable product, the production of which demands efficiency, and that efficiency is tied tightly to the production, processing and use of water. Often, water sources are located far from the places of petrochemical processing. Almost always, the petrochemical sector s treatment of water is subject to exacting standards and environmental regulations. As populations grow and the competition for water resources increases, we will help you make the most effective use of the water resources available to you. Ovivo can be relied upon to recommend the ideal processes, technologies and products for our clients to address their particular circumstances and meet their specific requirements. At Ovivo, we are dedicated to managing the water resources that are vital to the petrochemical industry. Whatever your need, wherever you are based, Ovivo has the solutions to ensure that your company makes the most cost-effective use of the water resources you employ. Ovivo aims to help you maximize your output, meet the regulatory requirements of your local sites and minimize your environmental impact. From evaluation of the best technical solution to installation and process optimization, we deliver complete processes with efficient performance based on decades of experience, technical know-how and an extensive range of proven in-house technologies. Creating Value 1

4 Ovivo - Industrial Services Ovivo solutions engineers can customize designs and develop new features to satisfy any special application requirements that clients might have. Whatever the special requirement of the installation, we will provide a design to suit users needs. Screened water with fine silts can be treated in reactor-clarifiers with coagulant and flocculant polymer so that suspended solids can be removed as sediment from the bottom of the clarifier. Residual precipitated solids remaining after the clarifier has been employed are removed by means of backwashable granular media filtration; typically sand and anthracite media are used in these to remove impurities in the water. Raw water treatment Water is essential to the efficient achievement of many industrial processes. Ovivo s aim is to ensure that we deliver high quality raw water so that your processes run flawlessly and efficiently. Screening Ovivo s solutions are flexible, delivering the various screening operations in which our clients sites are engaged. Ovivo systems enable the effective removal of unwanted screening debris. Our systems provide reliable water quality; they are robust enough to handle heavy solids loads, including jelly fish, and can be fitted with fish protection technologies if required. Whatever the size of your operation, Ovivo will supply the optimal system, from single band screens that remove floating and suspended solids effectively and efficiently to drum screens that equip larger installations for the continuous removal of unwanted solids from cooling water, Ovivo s technology protects pumps, heat exchangers and other equipment from damage and fouling and helps to optimize efficiency in the treatment process. For pipeline filtration we supply fully automatic backwash strainers that can handle exceptional flows of up to 10,000 m 3 /h and remove particulates in the 50 to 2,000 micron range. Cooling water heat exchange systems and condenser pipes can be equipped with special in-line debris filters and automatic ball-cleaning systems to keep the heat transfer surfaces clean and efficient. Clarification Waters containing high levels of fine sediments or silt are treated by sedimentation. The water is first dosed with coagulant and then a flocculant to bring these small particles into larger flocs that will readily settle and be removed in a clarifier. Our clarifiers are easily adaptable. Our Boiler Feedwater Treatment Optimizing the energy efficiency of steam turbines leads to increasing operating pressures. The purity of the steam and the quality of the water used as boiler-feed is of paramount importance to operating efficiency. The minutest contamination by sodium and silica can lead to problems over time. Ovivo s responsibility to its clients is to minimize any disruption. We can evaluate the best technical solutions at installation or recommend process optimization at existing sites. Our engineering staff and project management teams can customize processes to meet the quality requirements for boiler feedwater and boiler water at individual sites. Our key processes for boiler feed water production are ion exchange demineralization and reverse osmosis, as well as different types of filtration. Ovivo ion exchangers and reverse osmosis membrane technology remove mineral impurities to provide process water of the utmost purity. Extensive experience with boiler feedwater systems combined with the specialist know-how of a leading manufacturer of ultrapure water systems makes Ovivo the ideal partner for any operator of high-pressure boiler feed applications. 2

5 Water Specialists for the Petrochemical Sector Ovivo offers circular and rectangular DAF units of several sizes and varieties to suit the particular needs of individual sites and to optimize the process. Wastewater Treatment Oil-water Separation The first stage of wastewater treatment in petrochemical applications is normally the deployment of American Petroleum Institute (API) or coalescing plate interceptor (CPI) equipment for the removal of large amounts of oil and suspended solids from the effluent. These units use gravity and density differences between oil droplets, water and suspended solids to separate the different substances from each other. When it has risen, an oil layer is skimmed from the water surface, while bottom layers of sediment are removed by scraper and sludge pump. In CPI units, the separation of oil from water is intensified by the water motion through the plates, which collect oil droplets together as larger ones to separate them from water more easily. Dissolved Air Flotation Residual oil and suspended solids are separated by dissolved air flotation (DAF). During this process pressurized air is dissolved into recycled effluent water to generate micro bubbles. The pressure is then released into the feed flow. The bubbles produce agglomerates with smaller specific gravity than that of water by attaching themselves with suspended particles. These agglomerates rise through the liquid and the air-water-solid mixture is distributed uniformly across the flotation tank, thus forming a floating sludge layer that is removed by surface skimmers. Heavier solids settle to the bottom of the tank and can be discharged from there. Clear liquid supernatant on the sediment layer is withdrawn under a tank baffle and over the weir for reuse or for treatment by coagulation and flocculation. For coagulation and improved flocculation, chemical treatments are usually needed to maximize the efficiency of floc formation and separation. Emulsions of oily materials can be broken by acidification, the addition of alum or iron salts (inorganic coagulants) and by using emulsion-breaking polymers. Biological Treatment Biological treatment removes dissolved organic hydrocarbons from water. Ovivo s sophisticated, compact Floobed Moving Bed Biofilm Reactor (MBBR) uses special, freely moving biofilm carriers, which suit high capacity operations, are particularly tolerant of variations in feed flow rate and quality, and give consistently high quality results. Most of the microbes cultivated for purification grow attached as a film on the surface of the Floobed MBBR s carrier elements. Our design avoids the blocking problems that are a traditional hazard of attached microbiological growth processes. A specially designed bottom aeration system mixes the carrier elements amongst the treated water efficiently. The biomass that remains when water flows out of the bioreactor is separated by secondary clarification or micro flotation. Having a limited footprint and high specific efficiency, our Floobed MBBR carrier can be introduced to existing active sludge processes to meet higher capacity or more stringent quality requirements when required. As a supplement or alternative for the Floobed MBBR carrier, a membrane bioreactor (MBR) can be applied. In these reactors, semi-permeable membrane cartridges are submerged in a biological treatment reactor, which rejects suspended solids, allowing effective separation of water from the generated biomass without the use of clarifiers. Process Water Treatment Sometimes, it might be more beneficial to separate some effluent flows and treat them with an inert gas as a carrier rather than air. Ovivo s covered units maintain control over potentially volatile 3

6 Ovivo - Industrial Services organic compounds, ensuring the safety and integrity of the wastewater treatment process. Water Reuse Recycling waste water reduces the requirement for fresh water, thus yielding clear environmental benefits. Membrane processes offer a high level of purification whilst leaving a low environmental footprint with relatively low energy consumption. Ovivo provides optimal membrane solutions for water reuse and other industrial process separation requirements. Our membrane systems encompass the spectrum of membrane filtration processes from ultrafiltration to reverse osmosis. Ultrafiltration Ultrafiltration with pressure cartridges or with a membrane bioreactor (MBR) removes suspended solids from water as well as colloidal material, precipitated metals, organics, bacteria and viruses. The water produced meets the highest standards for turbidity and the presence of microbes. Ultrafiltration is a very effective pre-treatment for reverse osmosis desalination plants. Reverse Osmosis Reverse osmosis is one of the finest form of filtration known. This process allows for the removal of microscopic particles such as the ions of dissolved salts from water solutions. Ovivo s reverse osmosis technique purifies water to the most demanding specifications. Creating Value Our wastewater treatment systems have been designed to optimize costeffectiveness by meeting the toughest environmental regulations. Our commitment is to equip our clients with the means to match the most stringent of tests whilst maximizing efficiency. Ovivo membrane technology recycles treated wastewater, setting a milestone on the path towards achieving zero emission targets. 4

7 Water Specialists for the Petrochemical Sector Case Study Primary Screening Vishakhapatnam, India Brief HPCL is a Fortune 500 company. Its annual turnover in the financial year was trillion rupees and sales income totalled trillion rupees (i.e. US$ billion). HPCL s two major refineries produce a wide variety of petroleum and specialty fuels. The capacity of the Mumbai refinery is 6.5 million metric tons per annum (MMPTA). Vishakhapatnam runs at 8.3 MMTPA. In 1985 Ovivo s heritage brand Brackett Green supplied five cup screens to HPCL s Vishakhapatnam refinery. Cup screens clarify seawater for use in plants and are designed for fine filtration. Ovivo s cup screens eliminate the possibility of material larger than the media aperture bypassing the screen, and are ideal for protecting sensitive membranes from debris. The original cup screens carbon steel mesh panels and grade 316 stainless steel shaft were still in excellent condition after twenty-five years; however, HPCL wanted to upgrade them for additional corrosion resistance and to ensure continued long-term durability Solution Ovivo will supply new screens of identical dimensions but with grade 316 stainless steel panels and a stronger, even more corrosion-resistant duplex stainless steel shaft. Outcome HCPL s new screens will build on twenty-five years reliable service, with no screen bypassing or debris carry-over. The screens enduring design is a guarantor of reliable performance leading to virtually maintenance-free operation. How we create value Reliable removal of floating and suspended solids protects critical equipment. Few minimal parts to minimize risk of mechanical failure. Low maintenance assures lower operating costs. 5

8 Ovivo - Industrial Services Our Petrochemical processes Discover the ways we can help you with your wastewater challenges and help save you money Clarification Filtration Water Intake Primary Clarification FlooDAF Oil Recovery 6 Sludge Handling

9 Reverse Osmosis Water Specialists for the Petrochemical Sector Ion Exchange Polishing Process Water Recycling Dissolved Air Flotation Biological Treatment Floobed BAS Ultra Filtration Secondary Clarifier Tertiary Treatment FlooDAF Sludge Handling 7

10 Ovivo - Industrial Services Case Study Petrochemicals Package DAF Implementation Exxon Mobil, Singapore Brief At an Exxon Mobile petrochemical process plant in Singapore, increasing amounts of oil and grease were seen to be consistently reaching the biological treatment part of the process. Exxon Mobil searched for a technology to remove the high oil and grease content from process wastewater prior to it reaching the biological treatment phase. Solution Ovivo s Dissolved Air Flotation (also known as microflotation) technology is a well-known method of particle separation. Microbubbles are created by dissolving air into water under pressure. When the air-saturated pressurized water is released, microbubbles are formed. Chemical, physical and electrical forces cause suspended solids and colloids to attach to one another or to air bubbles which float to the surface and are scraped off. Coagulation and / or flocculation chemicals enhance the process. Outcome Seen as a critical element in the treatment of wastewater at the plant, the DAF unit was installed, started-up and handed over into operation in record time The unit has achieved its required oil removal efficiencies. Since switch-on of the new plant, it has continued to operate troublefree and within its operational parameters. How we created value High performance and good capture efficiencies Fully automated system Reduced maintenance and operational costs Low down time Reduced power consumption 8

11 Water Specialists for the Petrochemical Sector Prolonging the efficient life of your assets Ovivo takes a business-orientated view of total operating costs in water and waste water. Each office can draw upon global best practice and in-depth application knowledge to ensure the efficient and effective running of water solutions within clients businesses. Ovivo s commitment to clients is total, with experts dedicated to the provision of high quality operational support, maintenance, refurbishment and specialty chemical supply. Ovivo teams worldwide can test and confirm the operating capabilities of systems via regular inspections, either onsite or remotely. They will calibrate water treatment equipment periodically, as specific client service contracts require it. Your local Ovivo team operates a quality system that conforms How to we ISO create 9001 ensuring valuethat: Communicating is as easy as possible. Local resources are used wherever possible. Costs are kept to a minimum. Backed by a comprehensive telephone and remote control support service and spare part supply agreements, Ovivo s commitment is to develop productive, long-term customer service relationships with every client. Its teams ensure that plant is kept in optimum condition, minimizing downtime for your business and enabling you to operate at optimal efficiency. 9

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