2024 Design and Construction Standards - Section 5B - Corrosion and Odor Control

10 SECTION 5B – CORROSION AND ODOR CONTROL 1 Bioxide VDLT System 11 General A Bioxide VDLT System 1 This section includes the fabrication , delivery , installation , and placement into successful operation of Bioxide ® chemical feed system complete with a VersaDose ® LT VDLT control system All materials shall be provided in accordance with these specifications 2 All components of the system shall be compatible with the conditions and chemicals to which they are subjected to during the normal operation of the system Compounds with which the materials must be compatible with include , but are not limited to a Hydrogen Sulfide b BIOXIDE ® solution B MANUFACTURER AND QUALITY ASSURANCE 1 The system shall be provided by Evoqua Water Technologies LLC of Sarasota , Florida 2 The manufacturer of this equipment shall be one recognized and established in the design , production , and operation of Bioxide ® VDLT chemical feed systems The equipment shall be constructed and certified in accordance with appropriate specifications and standards 3 The manufacturer shall maintain regular production facilities at their place of business These facilities shall be open for inspection by a representative of the Owner or Engineer at any time during construction and testing of this equipment 4 The manufacturer of the Bioxide ® VDLT shall be an Underwriters Laboratories listed manufacturer of Enclosed Industrial Control Panels 5 All components of the feed system will be provided by a single manufacturer who shall have sole - source responsibility for the system 6 All equipment shall be furnished by a single manufacturer who shall be responsible for the coordination of the system design C PROCESS DESCRIPTION 1 The system shall provide for bulk storage of Bioxide ® and metering of the Bioxide ® from the bulk storage tank to the wastewater collection system The system shall contain controls as necessary to facilitate single discrete dosing profile 24 - hour setpoints that varies in 1 - hour increments in a stepping fashion over a 24 - hr period A calibration cylinder shall be permanently installed to facilitate calibration of feed pumps The VersaDose ® LT feed system is capable of reducing chemical usage by at least 10 versus typical 2 - timer systems by dosing more closely to the demand curve 2 The Bioxide ® material shall utilize the inherent ability of the facultative bacteria normally present in wastewater to metabolize hydrogen sulfide and other odor - Section 5B - 1 CORROSION AND ODOR CONTROL 2024 RevisionPageSECTION 5B – CORROSION AND ODOR CONTROL causing , reduced sulfur containing compounds The material shall provide nitrate - oxygen to the wastewater to support this biochemical mechanism This nitrate - oxygen shall be applied via nitrate salts The material shall be chemically stable , allowing continuous removal of sulfide contributed by side streams downstream of the application point ? 3 The purchase of Bioxide Plus products from Evoqua constitutes an implied license to practice the processes described in United States Patents # 6,309,597 , ? # 7,087,172 and # 7,285,217 Bioxide is a registered trademark of Evoqua Water Technologies LLC D SUBMITTAL 1 The manufacturer shall submit complete shop drawings and engineering data to the Owner or Engineer , upon request These submittals shall include , at a minimum a Drawings showing plan and elevation views of the feed system b Control system layout drawing c Control systems electrical diagram d Manufacture’s catalogue information on major system components including , but not limited to i Chemical Feed Pumps ii Bioxide ® VersaDose ® LT Feed Controls iii Liquid Storage Tanks iv Operator Interface e Statement of design conditions and performance guarantee f Statement of warranty E Operation and maintenance manuals shall be provided by the manufacturer prior to installation of all major equipment components These manuals shall include at a minimum 1 Information in hazards associated with the system and the appropriate safety precautions 2 All appropriate Material Safety Data Sheets 3 Equipment installation instructions 4 Equipment startup instructions 5 Equipment maintenance procedures 6 Troubleshooting guide 7 Individual operation and maintenance information on major system components , including but not limited to a Chemical Feed Pumps b Bioxide ® VersaDose ® LT Feed Controls c Liquid Storage Tanks d Operator Interface F DELIVERY Section 5B - 2 CORROSION AND ODOR CONTROL 2024 RevisionPageSECTION 5B – CORROSION AND ODOR CONTROL 1 Fabricated assemblies shall be shop assembled and properly matchmarked for ease of field erection 2 All components will be erected by the Contractor immediately upon receipt from the Manufacturer or stored in strict conformance with storage recommendations provided by the Manufacturer 3 Delivery shall be coordinated with the Contractor G SUBSTITUTIONS 1 Any substitutions or deviations in equipment or arrangement from that shown on the drawings specified herein shall be the responsibility of the Manufacturer or Contractor Any deviations must be accompanied by detailed structural , mechanical , electrical drawings and data for review by the Engineer All costs associated with review of the substitutions or deviations and costs associated with project drawing changes as a result of approval shall be borne by the Manufacturer or Contractor There shall be no additional costs to the Owner due to substitutions or deviations 12 Products A Product Information 1 Bioxide ® a Design Requirements i The material supplied shall be an aqueous solution of calcium nitrate containing a minimum of 35 pounds of nitrate - oxygen per gallon ii The material shall be capable of reducing the dissolved hydrogen sulfide concentration in wastewater to less than 01 mg l iii The material shall be free of any objectionable odor producing compounds iv The pH of the material shall not be less than 40 or greater than 75 v The material shall have a freezing point less than – 10 ° F b Safety Requirements i The material shall not be listed as an Extremely Hazardous Substance under Section 302 of EPCRA , nor be listed as a CERCLA hazardous substance ii The material shall be exempt from Federal DOT placard requirements iii Recommended handling procedures for the material shall require protective gloves and safety glasses only Any material recommending more sophisticated equipment ie , face shield , body suit , etc during routine handling shall not be considered B Components 1 Tank a The chemical storage tank shall be constructed of Rotationally Molded High - Density Cross - linked Polyethylene HDXLPE No other material of construction shall be acceptable Section 5B - 3 CORROSION AND ODOR CONTROL 2024 RevisionPageSECTION 5B – CORROSION AND ODOR CONTROL b Specifications i The chemical storage tank shall be double wall , with the exterior tank having a nominal capacity no less than 110 of the interior tank The tank shall have the following capacity and approximate dimensions + - 5 Chemical Tanks Parameter Nominal Capacity 1,550 US gal Diameter 8’0 ” Height 6’11 ” Empty Weight 800 lb Specific Gravity 165 c Manufacturing i Tanks shall be manufactured by the rotational molding process in accordance with ASTM D - 1998 Standard Specification for Polyethylene Upright Storage Tanks ii Appearance Finished vessel walls shall be as free as commercially practicable of visual defects that will impair the serviceability of the vessel iii Dimensions and Tolerance The vessel diameter shall be measured externally Measurement shall be taken in a vertical position d Material i Plastics The polyethylene shall preferably be virgin material Any use of regrind , recycled , or reprocessed materials or combinations of such materials shall not rely upon the performance data of their original constituents but must meet the requirements of this standard in its own right ii Fillers and Pigments The plastic shall contain no fillers All plastic shall contain an ultraviolet stabilizer This stabilizer shall be compounded in the polyethylene Pigments must be compounded at the same time of resin manufacture e Fittings i Plastic Fittings Plastic fittings shall be “ bulk - head ” or “ two - flange ” style All bolts shall be all thread design Each bolt shall have a gasket , which is on the inside of the vessel ii Openings that are cut in vessel to install fittings shall not have sharp corners Holes shall have minimum clearance to ensure the best performance of fittings Section 5B - 4 CORROSION AND ODOR CONTROL 2024 RevisionPagePage pageNumber5SECTION 5B – CORROSION AND ODOR CONTROL iii For all flanged connectors , the flange drilling and bolting shall be in accordance with ANSI ASME B - 165 2 Process Feed System a General The operation of the Chemical Feed System shall be controlled from a Control Panel All equipment control switches , pilot lights , controllers , etc and the chemical feed pumps shall be housed in this panel b Enclosure The control panel enclosure shall be constructed of 316 stainless steel and shall be rated NEMA 4X It shall be equipped with a door with a continuous hinge The hinged door shall have two latches and shall be capable of locking via a padlock The enclosure shall be mounted on the control stand c Components The Control Panel shall contain the following i 1 - Touch Screen Operator Interface with color display and integrated tank level indication ii 1 - HMI On Off Soft Switch for auxiliary equipment iii 2 - HMI Off Auto Soft Switches for pump control iv 1 - Set of Contacts with surge arrestor to accept Tank Level device v 1 - Cellular Modem for remote communication d Controls Layout All manually operated controls control switches , pilot lights , etc shall be located on a panel behind the enclosure door The panel shall be outfitted with a main power disconnect located in the Calibration Stand e Standards All fabrication and wiring shall conform to the standards of Underwriters Laboratories , National Electrical Code , and any other applicable federal , state , or local codes f System Operation Chemical Feed Pumps The bellows pump shall be controlled by a two - position OFF AUTO switch The control system shall utilize 24 discrete dosing set points one setpoint for each hour of the day The same 24 discrete dosing setpoint is then repeated and used for each day of the week i When in the AUTO position , the pump shall be controlled by the advanced dosing controller The advanced dosing controller shall vary the feed rate in 1 - hour increments as specified by the user The pumps shall be turned on and off by the advanced dosing controller to match the specified dose curve ii System shall automatically calculate the dose with either one pump or two pumps activated and the specified volume of product iii If the tank level is in alarm condition empty , low or high relay contacts shall be energized iv Automatic functions shall be protected by one - level security v The chemical dosing scheme shall be a stepping function from vi any given hour to another vii Daily chemical dosing curve shall also be adjustable by a global setting to increase the feed rate percentage across all 24 daily set points Section 5B - 5 CORROSION AND ODOR CONTROL 2024 RevisionPagePage pageNumber6SECTION 5B – CORROSION AND ODOR CONTROL viii System shall have selectable High - Low - Empty digital output alarms and provide for remote customer lockout contacts for remote customer shutdown ix Feed pumps shall have the capability to be interlocked with the sewage pumps and shall have the capability to be automatically shutdown on empty tank alarm x System shall calculate be capable of providing alarms for leak detection g Control Stand Pump control box shall be mounted on a 316 stainless steel pedestal i Calibration Cylinder The stand shall house a calibration cylinder used to measure the chemical being injected into the system A 3 - way valve shall be located at the top and bottom of the calibration tube to facilitate flow measurement Access inside this pedestal shall be accomplished through a door located on the front of the pedestal Instructions for use of this cylinder shall be permanently affixed to the interior of the enclosure ii Disconnect Switch A main power disconnect shall be located in the control stand 3 Pumps a General Provide Evoqua Water Technologies Bellows Pump s as shown on the following table Each pump shall include motor , base , sealed bearings , flexible coupling and check valve filters Model No Bellows Size Adjustable Flow Rate Max Discharge Quantity Range mL min Pressure psi 1 15907 - 001 10 ” 5 - 50 40 1 15907 - 001 15 ” 15 - 150 20 1 15907 - 002 10 ” 125 - 125 40 1 15907 - 002 15 ” 25 - 250 20 1 15908 - 001 10 ” 30 - 300 40 1 15908 - 001 15 ” 63 - 630 20 1 15908 - 002 10 ” 50 - 500 40 1 15908 - 002 15 ” 105 - 1,050 20 1 15908 - 003 10 ” 72 - 720 40 1 15908 - 003 15 ” 150 - 1,500 20 Section 5B - 6 CORROSION AND ODOR CONTROL 2024 RevisionPagePage pageNumber7SECTION 5B – CORROSION AND ODOR CONTROL b Performance Pump rates and maximum discharge pressures shall be in accordance with the table above i The pumps shall be self - priming capable of suction lifts , when dry , up to seven 7 feet , and with bellows full , they will prime up to twenty 20 feet ii Flow rate of each pump shall be adjustable by a diameter of bellows , and b adjustment of stroke length A calibration cylinder and valves will be installed to calibrate the pump feed rates iii Pump suction and discharge shall be 3 8 ID polypropylene barbed connection for T tubing A 1 - 1 2 wye strainer will be installed c Construction Material Reference Material Bellows Polypropylene ® Poppet Valves EPT ® O - rings EPT Springs Hastelloy C d Motors Motor shall be totally enclosed 115 - volt , 60 Hz , 0034 HP , single - phase and shall be rated for continuous duty 4 Piping & Appurtenances a All suction and discharge piping shall be standard ½ ” , Schedule 80 PVC All valves , fittings , and connectors shall be Schedule 80 PVC b All fill line piping shall be 2 Schedule 80 PVC All fill line valves , fittings , and connectors shall be Schedule 80 PVC c Fill line shall have a 2 stainless steel male camlock with a 2 plastic female camlock cap d All chemical feed seals shall be compatible with the chemicals to be used in the regular operation , maintenance , and cleaning of the feed system e All fittings shall be solvent - welded or threaded f Contractor must install chemical feed discharge lines so that the product is injecting directly into the waste streams and not onto structures or equipment 5 Level Indication a The manufacturer shall provide one pressure transducing tank level indicator The system shall utilize a pressure sensing device to measure the tank liquid level The system shall contain 3 adjustable relays to allow for alarms and other electrical uses as well as one 4 – 20 mA output 13 Execution A Installation Section 5B - 7 CORROSION AND ODOR CONTROL 2024 RevisionPagePage pageNumber8SECTION 5B – CORROSION AND ODOR CONTROL 1 The system shall be installed in accordance with the manufacturer’s instructions All installation personnel shall be trained and qualified in the areas of plumbing , electrical work , and instrumentation as required to complete the installation B Site and Utilities 1 The completed system , tanks , and other appurtenances shall be located on a foundation as shown in drawing The following utilities shall be provided at the feed system site and located as shown on the drawing and as indicated in the approved project proposal Site preparation and utility service , are not provided by the Manufacturer under these specifications 2 Electrical One 120 VAC , 60 Hz , 15 - amp single - phase electrical service shall be required 3 Drain - A minimum 2 - inch PVC gravity pad drain to sewer is recommended 4 Concrete Foundation 5 All trenching excavation and backfill C EQUIPMENT SHOP TESTING 1 Before shipping the Bioxide ® VDLT Chemical Feed System , the Manufacturer shall perform shop tests These tests shall include at a minimum 2 Visual inspection of all equipment 3 Complete assembly , start - up , and “ wet - test ” of feed pumps and calibration piping D STARTUP AND TRAINING 1 The manufacturing of chemical feed system shall furnish a factory - trained representative for not less than 7 days for the feed systems supplied The days shall not necessarily be consecutive ; however , the times shall be mutually agreed upon by the manufacturer , Contractor , and Owner 2 A day shall be considered as 8 hours The factory - trained representative 3 shall perform the following a Check the installation and put each piece of equipment into initial service b Train and instruct the operating personnel in the proper operation of the equipment and in the proper maintenance of the equipment E FIELD TESTS 1 The performance of the system shall be in accordance with the terms of the process description in section 13 of Part 1 of this document 2 If required , Manufacturer shall make any changes to the system , at his own expense , that may be necessary to assure satisfactory and efficient operation of this system 14 Warranty A The Manufacturer shall guarantee that the system will perform as described in these Specifications The Manufacturer shall warrant the system , complete , to be free Section 5B - 8 CORROSION AND ODOR CONTROL 2024 RevisionPagePage pageNumber9SECTION 5B – CORROSION AND ODOR CONTROL from defects in materials or workmanship for a period twelve 12 months from acceptance or eighteen 18 months from shipment , whichever occurs first The Manufacturer shall repair or provide replacement for any defective components under this warranty In addition , the chemical storage tanks shall be warranted for a period of five 5 years from warranty start date 2 Carbon Filter Odor Control 21 Carbon Filter Unit Specs for all stations without Bioxide Systems A The Whisper ® 48 shall be equipped with a carbon absorber vessel , carbon media , carbon media supports , blower , and electrical control panel , enabling the system to remove a minimum of 990 of inlet hydrogen sulfide concentration 22 EQUIPMENT SCOPE A The following equipment and services are included in our scope of work The Evoqua Whisper ® system is completely pre - assembled , pre - wired , and shipped as a single package All equipment is designed to be installed in a non - hazardous area Description Quantity No 1 Air Exhaust Fan w Motor 1 2 Fan Outlet Vessel Inlet Transition 1 3 Whisper ® 48 Carbon Adsorber Vessel , including 1 Vessel Skid Odor Control Media Carbon Media Supports Removable Top , Drain Inlet , Mid - bed , and Outlet Sample Ports All Carbon Adsorber Vessel Connecting Hardware nuts , bolts , gaskets 4a MIDAS ® OCM Carbon Media 630 lbs 4b VoCarb P60 Carbon Media 660 lbs Electrical Control Panel , Skid Mounted , FRP Construction , NEMA 4X , Including 1 5 One 1 On - Off Switch and status light for exhaust fan One 1 VFD for adjustable speed control of exhaust fan 6 Neoprene Pad to be installed underneath the vessel Included Anchor Bolts Included 7 8 Operation Manuals Copies 2 Included 9 Manufacturer Start - up & Installs Services , which shall consist of two 2 days AND ONE TRIP , at eight 8 hours per day , to jobsite This includes Evoqua installing the last 5ft of straight - line Sin ducting , the 6in ducting reducer at the blower , and install of the carbon media 23 SITE , UTILITIES AND CUSTOMER REQUIREMENTS Section 5B - 9 CORROSION AND ODOR CONTROL 2024 RevisionPage0SECTION 5B – CORROSION AND ODOR CONTROL A Provide perform , all facets of system installation including , but not limited to dewatering , concrete work , trenching , Bin schedule 80PVC ducting to within 5ft of the system blower , excavation , backfill , piping and electrical B The developer shall provide all equipment for site preparation and equipment off - loading Only those items specifically listed in this proposal are included ; all other items are specifically excluded 480V , 3Phase , 10amp Electrical Service Required for System Operation C Additionally , the developer shall be required to supply the following for each odor control system D Power - 480V , 3Phase , 10amp E Bin Ductwork - Within 5 feet of air exhaust fan Includes duct supports if required F Concrete Foundation - 99 x 82 G Crane I Forklift for offloading carbon vessel , carbon media , and setting of carbon vessel on its final resting location on the pad The system weighs 2,200lbs with media installed and 1,000lbs without media installed In some cases , Evoqua will ship the unit pre - loaded with the carbon media and in other circumstances , the unit will be shipped empty , and Evoqua will install the carbon media while onsite H Drain - 1 Sch 80 PVC minimum from the carbon vessel back to the wastewater system wetwell manhole The system drain should be equipped with a 10 barometric P - trap to prevent leakage of foul air 24 WARRANTY A Warranty the system , complete , to be free from defects in materials or workmanship for a period twelve 12 months from acceptance or eighteen 18 months from shipment , whichever occurs first Section 5B - 10 CORROSION AND ODOR CONTROL 2024 RevisionPage