Water Purification Treatment. General Information. Water Purification Treatment Business of the Teijin Group. Water. Purification Treatment

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1 Business of the Teijin Group General Information

2 Teijin's Technologies and Their Features Core Technologies Environmentally Friendly Biological Technologies Greater Potential for Reuse Advanced Technologies Plant Engineering, Quality Analysis, and Consulting To "Comprehensive Wastewater Solutions" Business Activity Image Ultra pure water Decomposition of trace substance Rural community Fishing village Plant Reclaimed wastewater Reuse + sludgeless Animal industry + sludgeless Hospital City + sludgeless Commercial facility Decomposition of PPCPs and EDCs + sludgeless for underground water River + sludgeless Reclaimed wastewater Reuse PPCPsPharmaceuticals and Personal Care Products EDCsEndocrine Disturbing Chemicals Scope of Application of Teijin's Technologies Proposal of solution based on wastewater concentration Biological (activated sludge) treatment area Advanced treatment area

3 Biological Technologies MSABP Multi-Stage Activated Biological Process System Outline of Technology MSABP is a wastewater treatment technology based on a revolutionary biological treatment process in which a fiber-like organism-supporting media provides immobilization of microorganisms in a multi-stage aeration tank. Principle of As an effect of the multi-stages, the biota in each tank changes in an orderly manner, thereby forming a food chain. The fiber-like organism-supporting media provides an environment in which microorganisms remain active and are able to treat highly concentrated effluent and hard-to-decompose effluent. Raw water Organism-supporting media Microbial biomass Organic matter Air Treated water Diffuser pipe Prokaryote Protists Metazoans Fiber-like organism-supporting media Features The biota evolves downstream in an orderly manner. Suppresses the generation of excess sludge Reduces sludge disposal costs; sedimentation pond and sludge return are unnecessary(cost-down, space-saving) Absorption of variations in the concentration of raw water (±50%)Facilitates operation and management * 1 Also treats highly concentrated effluent (COD < 50,000mg/L)No dilution treatment required * 1 Also decomposes hard-to-decompose effluent (BOD/COD 0.15) Also decomposes surface-active agents, etc.* 1 Examples of Use of chemical effluent with high COD content (chemical plants, pharmaceutical plants, cosmetics plants, etc.) of hard-to-decompose effluent such as antiseptics and insecticides Reduction in excess sludge from easy-to-decompose effluent such as effluent from food manufacturing plants Sewage treatment for domestic wastewater Wastewater treatment under high salt level Related information MSABP Patent Registered Countries (as of August 2012): U.S.A., Singapore, Korea, India, China * 1:The actual performance and the upper limit for application depend on the nature of the effluent. Please contact us for details.

4 Biological Technologies MSABP Multi-Stage Activated Biological Process System Example of a System We Supplied to an Indonesian Synthetic Fiber Plant * 2 Raw water = hard-to-decompose effluent Quality of raw water Features Flow rate Manufacture of synthetic fiber Hard-to-decompose effluent containing antiseptics Biological decomposability Photo of the actual equipment Size6 m (width) x 3 m (height) x 12 m (depth) Number of stages2 Series 16 Stages Operation2006 Raw water = great variations in load Treated water = excess sludge minimized Raw water : great variations in concentration1,200/l ± 700) Consistent quality of treated water Results for raw water and treated water(cod) 1st stage 5th stage 9th stage 16th stage Sample taken from the bottom of each stage of the multi-stage tank Joint Research with the Japan Sewage Works Agency * 2 Test 1Target : CASP & Contact oxidation Test 2Target : OD & Extended aeration Sewage (after grit) Primary settled tank Treated water Sewage (after grit) Final sedimentation tank Treated water Raw sludge No excess sludge withdraw No excess sludge withdraw Excess sludge Items Target Result Fundamental performance Sludge-less Energy saving Easy operation * 2:The cases found in actual installation and the results of joint research are indicated here. Resalts to be achieved depend on various factors, such as composition and concentration of the effluent.

5 Advanced Technologies ELCAT E l e c t r o C a t a l y t i c M e t h o d Outline of Technology The ELCAT is a composite process that combines an electrolytic tank and a catalytic tank. Effectively decomposes and treats organic matter by changing hard-to-decompose substances into easy-to-decompose substances. Principle of occurs in two stages by using the electrolytic and catalytic tanks.* 3 Easy-to-decompose intermediates are generated by forming hypochlorous acid in the electrolytic tank and oxidizing the organic matter. Both the intermediates and surplus hypochlorous acids are sent to the catalytic tank to be gasified and decomposed by means of oxidation-reduction reactions. Treated water Electrolytic tank O ₂ Cl ₂ CO ₂ ClO- Cl- R-H HClO ClO- R -H H ₂ Catalysis ClO H O Catalysis OH OH O Catalysis HClO Catalytic tank HClO ClO- Raw water Features It is also possible to treat hard-to-decompose organic matter that cannot be removed completely by biological treatment. Generates hypochlorous acid by adding saltmore economical than the addition of hypochlorous acid Examples of Use * 4 Decoloring through decomposition of dye Industrial wastewater treatment, wastewater recycling Post-treatment for biological treatment (removal of hard-to-decompose organic matter after biological treatment) Reduction of dilution water(when diluted to the value which is lower than the criterion value) example: Color removal example after biological treatmen efficiency (typical examples) Substances to be treated Dye, detergent, phenols, cyanide, insecticide, herbicide, etc. * 3:Depending on the nature of the effluent, chemical agents may be used in piace of or with the catalyst. * 4:Typical examples are indicated here. Results to be acheived depend on various factors, such as composition and concentration of the effluent. Raw water After electrolytic treatment After catalytic treatment

6 Advanced Technologies HiPOx A d v a n c e d O x i d a t i o n W a t e r T r e a t m e n t Outline of Technology The HiPOx water purification technology is based on the AOP system that utilizes ozone gas and hydrogen peroxide. Principle of Hydroxyl radicals are formed through the addition of ozone gas and hydrogen peroxide to decompose and remove organic matter. Substances to be treated Intermediate Residual ozone gas is separated from treated water using a gas separator. The ozone gas thus separated is decomposed and made harmless using ozone destruction equipment before being discharged. Piping for separated gas Treated water Separating decomposed gas and residual ozone gas Ozone destruction equipment Port for O3 addition Appearance of equipment (typical) Raw water Port for H ₂ O ₂ addition Features Mixers are located immediately after the ozone gas injection ports, thereby enabling the gases to mix effectively Reduced amount of ozone injection and installation space compared to treatment with ozone alone Minimizes the formation of reaction byproducts by means of ozone injection at multiple points (when used in drinking water applications) Examples of Use Industrial wastewater, Industrial wastewater recycling, ultra pure water recycling, sewage water purification, water treatment, etc. Substances to be treated 1,4-dioxane, chlorine-based solvents, aromatic compounds (BTEX, phenol), herbicides (atrazine, etc.), residual pharmaceuticals and personal care products (PPCPs), endocrine-disturbing chemicals (EDCs), color, taste & odor compound, etc. Related information Joint research with Singapore Public Utilities Board (PUB) has been conducted concerning the application of the system to prevention of membrane fouling and sewage reuse The application of the system to removal of traces of residual pharmaceuticals and reuse of ultra pure water is being examined. The HiPOx Process meets the disinfection criteria for unrestricted water reuse under Title22 of the California Code of Regulations

7 Advanced Technologies HiPOx A d v a n c e d O x i d a t i o n W a t e r T r e a t m e n t Decomposition Rate of 1,4-dioxane with HiPOx* 5 The HiPOx Process effectively decomposes 1,4-dioxane as added to environmental regulations in Japan 1,4-dioxane Molecular weight88.107g/mol Feature Usage Regulation Both biologically and chemically stable under water. Possibly carcinogenic. General solvent for extraction, generation and reaction. quality standard regarding human healthcare related to water pollution in public water area quality standard related to water pollution of ground water Notification Enforcement date September 30th, 2009 Regulation value : below 0.05 mg/l The Cabinet Order Altering the Pollution Control Law The Ministerial Order Altering the Effluent Standards Enforcement date May 25th, 2012 Regulation value : below 0.5 mg/l Raw water Concentration of 1,4-dioxane mg/l Removal Effectiveness of 1,4-diozane Using HiPOx Ozone dosemg/l Test conditions Treat mixture of 1,4-dioxane reagents and pure water using the AOP mode and Ozone only mode of the HiPOx Process. The HiPOx Process is highly competitive. Actual Example of Operation Cost (JPY/m 3 ) of the HiPOx Process (compared to AOP method) Precondition for cost accounting Electrical charges, chemicals, UV lamp replacement cost only. Operation cost Test flow Targets and results Power consumption (O3) Power consumption (UV) RO permeate Improvement of water quality of RO permeate/brine Proof of decomposition of PPCPs and EDCs that remained in RO permeate Improvement of safety (Improvement of effect on humans) Confirmation of sharp reduction in concentration of PPCPs and EDCs Pollution control (Improvement of effect environment) Reduction of organic fouling of RO membranes (1,600hr later) 66% reduction of TMP (trans membrane pressure)expected to save energy UV lamp replacement Treated water Decomposition of micropollutants (*PPCPs:residual Pharmaceuticals and Personal Care Products *EDCs:Endocrine Disturbing Chemicals) Contributes to water quality improvement and energy saving in advanced treatment processes 1,4-dioxane in raw water 1,4-dioxane in treated water Ozone dose H2O2 dose Power consumption (O3) Trans membrane pressure(mpa) UF/HiPOx /RO system Sedimentary layer UF/RO system(control) Thickness of sedimentary layer Observation of the RO membrane surface by Low Voltage SEM 0 35H2O2 UV lamp replacement Electrical charges If persistent organic matters are contained in the wastewater, cost structure will be effected. Joint Research with Singapore Public Utilities Board (PUB): Improvement of Reclaimed (NE) Quality.* 6 PUF-RO - P P UF-RO UF-HiPOx-RO P UF-RO 100 P UF-HiPOx-RO ,000 1,200 1,400 1,600 Operation time (hr) Reduction of trans membrane pressure * 5:Typical examples are indicated here. Results to be achieved depend on various factors, such as composition and concentration of the effluent. 6:The results of the joint research are indicated here. Results to be achieved depend on various factors, such as composition and concentration of the effluent. *

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