Nanomaterials for Industrial Wastewater

Transcription

1 Dais: An Overview Aqualyte : The Foundation of Dais Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 1

2 Nanomaterials for Industrial Wastewater Dais Analytic Experienced nanotechnology innovation company A world leader in nanotechnology polymer materials Dais: An Overview Invented/commercialized a disruptive family of nanomaterials (Aqualyte ) Headquarters outside of Tampa, Florida, USA 22 patents issued or pending History of Dais Tampa, FL Incorporated in 1999, 16 employees Innovative nanotechnology materials and processes addressing global needs in energy and water. Developed Aqualyte as a PEM fuel cell membrane Commercialized ConsERV energy recovery ventilator for HVAC in 2004 The unique, proven features of the Aqualyte family of nanomaterials allow Dais to offer disruptive, first-in-a-generation technology that keeps our air cleaner, conserves our energy, and provides incredibly clean water. The employees of Dais believe that as our company profits, so too should our planet and our people. Added NanoClear product line in 2017 Our business model Entrepreneurial, product-based outlook Focus on membrane and value-added components featuring the membrane License and supply to partners who engineer and sell complete systems Incorporation ConsERV commercialization Materials Moving Molecules NanoClear development begins NanoClear product development and testing 2018 Dais Analytic Corporation. All rights reserved NanoClear commercialization 14 March 2018 Slide 2

3 Aqualyte : The Foundation of Dais Nanomaterials for Industrial Wastewater Patented polymer with carefully tailored properties Hydrophilic region Conceptual image of a hydrated Aqualyte membrane (drawing is not to scale) Hydrophobic region Dense, nonporous material Hydrophilic region Blocks passage of most gases and volatile compounds Highly selective Strongly favors water molecules while rejecting most contaminants High flux Polymer swells with water molecules Hydrophobic regions provide structure Membrane cross-section (TEM) Proven durability over 15 years Hydrophilic region Hydrophobic region Hydrophilic region Transfer water molecules readily via pervaporation Fully commercialized Hydrophobic region Hydrophobic region Modified block copolymer self-organizes Polar functional groups make polymer partially hydrophilic Like blocks solidify beside each other Nanoscale structure results (see TEM image) Provides a superhighway for water molecules to permeate through the polymer at high speed. Materials Moving Molecules Dark areas in image are solid regions of hydrophilic polymer 5 20 nm wide region 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 3

4 NanoClear Overview Fouling-resistant treatment of concentrated water Pervaporation membrane distillation Selective membrane Water molecules permeate and evaporate Vapor is condensed to product water Membrane flux microporous materials Vapor pressure difference drives transfer between surfaces Strong rejection of ions & nonpolar molecules TDS to 250,000 mg/l COD to 50,000 mg/l ph 2-11 Product water < 10 mg/l TDS; independent of wastewater input Capture 60 99% of wastewater Varying transmission of polar molecules Size, volatility are also parameters Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 4

5 Thermal Processing Fundamentally different from most membranes Low pressure evaporation Driven by thermal gradient Energy requirement is independent of TDS Approximately 2350 kj per kg evaporated External heat maintains gradient Evaporative cooling reduces wastewater temperature Circulation flow >> product flow High volume, low pressure flow Batch or continuous Today s membrane evaporator is part of a larger product line Maximizes driving force for recovery from high concentration water Multiple effect evaporators (2H 2018 release) re-use external heat Membrane-enhanced MVR will operate without external heat Heated Wastewater Cooling Loop Heat Sink Circulation Flow Heat Source Membrane Evaporator Water Vapor Condenser Makeup Water Warm Wastewater Vacuum Pump Produced Water Concentrate Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 5

6 Nanomaterials for Industrial Wastewater Specializing in Harsh Environments Surface structure & chemistry reduce fouling, product excels with high TDS water No pores Strongly hydrophilic materials create an exclusion zone (see images ) Hydrogen bonding organizes sheath of water molecules that help keep material from fouling Foulants that make it to the surface find little purchase and are easily swept away in cross-flow Biofouling resistant Smooth surface, acidic environment Little pretreatment required Remove suspended solids > 20 μm Bacteria Minimal maintenance 500 nm Polymer Cross Section How Small is a Nanometer? 5-20 nm domains Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved. Image from Zheng, Jian-ming and Gerald Pollack. "Long-range forces extending from polymer-gel surfaces." Physical Review E (2003): March 2018 Slide 6

7 Fundamentally Different Low-pressure thermal process doesn t act like pressure-based filtration Technology Summary NanoClear Hot wastewater passes over membrane; water vapor transferred via vapor pressure differential Reverse Osmosis (RO) Water forced through membrane by overcoming osmotic pressure Operational Pressures < 35 kpa kpa Membrane Fouling Little or no fouling Susceptible Wastewater Treatment Little or no pretreatment Pre- and post-treatment required High Saline Content 25% salinity with no membrane damage or energy increase Difficult to exceed 6 8% salinity because of increase in energy usage Recovery 60 99% 20 70% Product Water Quality (TDS) 0 5 ppm ppm Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 7

8 Market Position NanoClear benefits vs. conventional technology Simpler process OPEX Simple filtration to 20 μm suspended solids With freely available waste heat, OPEX = $ $0.40/m 3 Two passes of UF + RO can easily cost 3X more CAPEX CAPEX equal to or up to 2X greater than competition today Optimization, design for manufacturing will bring price within 10% at scale High quality output from concentrated brine Waste Water Waste Water Prefiltration Prefiltration Filter Filter UF 1 and UF 2 $0.23/m 3 OPEX RO 1 and RO 2 $ $1.50/m 3 OPEX UF Membrane UF Membrane RO Membrane RO Membrane NanoClear The NanoClear process Sand / Clay $ $0.40/m 3 reduces OPEX up to 77% NanoClear Membrane OPEX = $ $0.40/m 3 Product Water NanoClear OPEX assumes access to waste heat at zero cost OPEX = $ $1.73/m 3 Product Water Undissolved Organics Solids Suspended Solids Colloidal Solutions Oil Emulsions Macromolecules Bacterial / Cells Viruses Proteins Low MW Organic Compounds Multivalent Ions Monovalent Ions Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 8

9 Why NanoClear? Materials and process yield many advantages NanoClear Impact Parameters Customer Experience Clean contaminated water no one else can clean as well Industrial waste, high salinity brine Opens new markets Produce high purity water 100X cleaner than the US EPA drinking water standard Product is potable water Reduce pre-treatment 20 µm suspended solids filtration Reduces CAPEX, OPEX Capture waste heat Low-grade waste heat to maintain C Reduces OPEX Low water pressure required Plastic piping instead of stainless or titanium Reduces CAPEX, OPEX Replace multiple processes with one 1 NanoClear pass = 2 x UF + 2 x RO Lower operating cost Capture more clean water Up to 98% capture rates Less effluent, lower operating costs Reduce biofouling ASTM G-21 and G-22 antimicrobial and antifungal testing Higher up-time and lower costs Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 9

10 Case Study Shanghai, China 1 m 3 /day Waste heat provided Objective Evaluate with high-salinity wastewater Currently feeds to four-step nanofiltration process Motivation Seeking cost-effective method to export salts Unhappy with current technology limits NanoClear to increase concentration Results Test data covers 2017/12/12 to 2018/02/01 CAPEX = $18,129 OPEX = $0.59/m 3 vs $0.84/m 3 for existing process Reduced TDS by 99.99% Test Parameter Unit Value Average Flux L/hr-m Initial Wastewater Conductivity μs/cm 86,000 Concentrated Wastewater Conductivity μs/cm 205,000 Product Water Conductivity μs/cm 4 Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 10

11 Nanomaterials for Industrial Wastewater Commercial Products Third party test results show excellent product water quality NanoClear membrane evaporators are currently being shipped Before (mg/l) After (mg/l) Percent Reduction Calcium 3, % Cesium 5, % 132, % 50, % Fluoride Iron Lead 8,830 8 Magnesium 8, Potassium 1, Sodium 79, Sulfate 15, , % Substance Evaporators are modular Connect in parallel to achieve increased capacity Commercial evaporator capacities from L/hr Initial test units available from 4-20 L/hr Chloride COD APPLICATIONS: Onsite industrial water Implement ZLD with re-use of water Heat sources become water resources Use power plants, incinerators, etc. to turn wastewater into potable Materials Moving Molecules TDS 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 11

12 Present and Future Numerous NanoClear pilots, advancing engineering NanoClear status Reclaimed water field trial since 2013 Customer water evaluation since 2017 Customer pilots coming online in China Salt production brine Coal chemical waste Lithium battery waste Petrochemical wastewater Desulphurization water 15 pilot units in total Next gen NanoClear engineering Multiple effects to improve GOR Vapor compression: Eliminate need for external heat Wider application Multiple Effect Membrane Evaporation Single Effect Membrane Evaporation Engineering optimization will manage heat better to expand markets Multiple Effect Membrane Vapor Compression Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 12

13 Dais believes that waste heat is a valuable commodity to be used productively as it travels to the environment. Our Aqualyte membrane uses heat to reduce wastewater discharges and produce highpurity potable water for onsite re-use. Thank you for the chance to share these exciting products. Nanomaterials for Industrial Wastewater Dais Analytic Corporation Prosperous Drive Odessa, FL USA USA: China: Materials Moving Molecules 2018 Dais Analytic Corporation. All rights reserved March 2018 Slide 13