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Advanced Oxidation Processes: Reduction of Estrogenic Activity in Secondary Effluent at Ina Road Wastewater Treatment Facility Tucson, AZ

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Advanced Oxidation Processes: Reduction of Estrogenic Activity in Secondary Effluent at Ina Road Wastewater Treatment Facility Tucson, AZ Advanced Oxidation Processes: Reduction of Estrogenic Activity in Secondary Effluent at Ina Road Wastewater Treatment Facility Tucson, AZ Item Type Electronic Thesis; text Authors Knights, Shellie; Laughlin, Amanda; Rice, Adam; Olivares Martinez, Christopher I. Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 07/10/2021 16:34:00 Item License http://rightsstatements.org/vocab/InC/1.0/ Link to Item http://hdl.handle.net/10150/144554 Advanced Oxidation Processes Reduction of Estrogenic Activity in Secondary Effluent at Ina Road Wastewater Treatment Facility, Tucson AZ Shellie Knights Adam Rice Christopher Olivares Amanda Laughlin Chemical and Environmental Engineering – Senior Design Project 4/29/2011 Table of Contents Summary 1. Introduction ..............................................................................................................7 1.1 Overall Goal .................................................................................................7 1.2 Project Background and Justification ..........................................................8 1.2.1 Current and Future Legislation ...........................................................8 1.2.2 Ina Road Wastewater Reclamation Facility ......................................10 1.3 Current Market Information .......................................................................13 1.4 Process Premises and Assumptions ...........................................................14 2. Overall Process Descriptions and Rationale ..........................................................18 2.1 Block Flow Diagrams ................................................................................18 2.2 Process Flow Diagrams..............................................................................20 2.3 Equipment Tables ......................................................................................23 2.3.1 UV/H2O2 ...........................................................................................23 2.3.2 Ozonation ..........................................................................................25 2.4 Stream Tables.............................................................................................29 2.5 Utility Tables .............................................................................................34 2.6 Written Process Descriptions .....................................................................34 2.6.1 UV/H2O2 ...........................................................................................34 2.6.2 Ozonation ..........................................................................................35 2.6.2.1 Unit 1 Description ..............................................................35 2.6.2.2 Unit 2 Description ..............................................................37 2.7 Process Rationale .......................................................................................37 2.7.1 Current Applications .........................................................................37 2.7.2 Major Tradeoffs ................................................................................38 3. Equipment Description and Rationale ...................................................................40 3.1 UV/H2O2 ....................................................................................................40 3.1.1 Hydrogen Peroxide Storage Tank System ........................................40 3.1.2 Hydrogen Peroxide Pumps (P-101 to P-105 A/B) ............................42 3.1.3 Wastewater Pumps ............................................................................43 3.1.3.1 20 MGD Pump: PL-7081 ...................................................43 3.1.3.2 10 MGD Pump: PL-7050 ...................................................45 3.1.4 UV Reactor .......................................................................................47 3.1.4.1 Reactor Size .......................................................................47 3.1.4.2 Low Pressure Lamps ..........................................................48 3.2 Ozonation ...................................................................................................49 3.2.1 Nitrogen Absorption System ............................................................49 3.2.2 Air Compressor and Dryer (C-101 and D-101) ................................51 3.2.3 Air Surge Vessel (V-101) .................................................................52 3.2.4 Nitrogen Absorption Columns (T-101 and T-201) ...........................53 3.2.5 Oxygen Surge Vessel (V-102) ..........................................................55 3.2.6 Ozone Generator (R-101) .................................................................55 3.2.7 Wastewater Pumps (P-201 to P-202 A/B) ........................................57 3.2.8 Ozonation Reactors (R-201 and R-202) ...........................................57 3.2.9 Magnesium Thiosulfate Storage Tank (V-201) ................................61 3.2.10 Magnesium Thiosulfate Refill Pump (P-203 A/B) .........................61 4. Environmental and Safety Statement .....................................................................62 4.1 Environmental Impact Statement ...............................................................62 4.1.1 UV/H2O2 Oxidation ..........................................................................63 4.1.1.1 Discharges ..........................................................................63 4.1.1.2 Utilities Impact...................................................................64 4.1.1.3 Spills of Major Component ................................................65 4.1.1.4 Environmental Regulations ................................................65 4.1.1.5 Impact Categories ..............................................................66 4.1.2 Ozonation ..........................................................................................68 4.1.2.1 LCA on Ozonation .............................................................68 4.1.2.2 General Environmental Cost ..............................................69 4.1.2.3 Liquid and Gaseous Emissions ..........................................70 4.1.2.4 Specific By-products of concern ........................................72 4.2 Safety Statement ........................................................................................73 4.2.1 UV/H2O2 ...........................................................................................73 4.2.1.1 Equipment ..........................................................................73 4.2.1.2 Chemical Transport and Storage ........................................74 4.2.1.3 Synergistic Effect of Chemicals .........................................75 4.2.1.4 Special Personal Protective Equipment .............................77 4.2.2 Ozonation ..........................................................................................77 4.2.2.1 Equipment ..........................................................................77 4.2.2.2 Chemicals ...........................................................................78 5. Economic Analysis ................................................................................................81 5.1 Bare Module Costs .....................................................................................81 5.1.1 UV/H2O2 Oxidation ..........................................................................81 5.1.2 Ozonation ..........................................................................................82 5.2 Total Permanent Investment ......................................................................84 5.2.1 UV/H2O2 Oxidation ..........................................................................84 5.2.2 Ozonation ..........................................................................................84 5.3 Annual Operating Cost ..............................................................................85 5.3.1 UV/H2O2 Oxidation ..........................................................................85 5.3.2 Ozonation ..........................................................................................89 5.4 UV/H2O2 and O3 Working Capital ............................................................92 5.5 UV/H2O2 and O3 Total Capital Investment ...............................................92 5.6 UV/H2O2 Cash flow Analysis – With and Without Sales..........................93 5.7 Economic Hazards .....................................................................................94 5.7.1 Contaminant Concentration ..............................................................94 5.7.2 New Contaminants ............................................................................95 5.7.3 Raw Material Prices ..........................................................................96 5.7.3.1 UV/H2O2 Oxidation ...........................................................96 5.7.3.2 Ozonation ...........................................................................96 5.7.4 Utility Costs ......................................................................................97 5.7.5 Reliability of Special Equipment ......................................................98
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