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Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 2 TABLE OF CONTENTS I) INTRODUCTION II) DESCRIPTION III) OVERALL PROCESS DESCRIPTION IV) GENERAL CONTROL SYSTEM AND OPERATION V) MAINTENANCE OF SEWAGE TREATMENT PLANT VI) PLANT LAYOUT & PIPING VII) HAYDRAUILC PROFILE VIII) PLANT LEVEL IX) DETAILED DESIGN DATA AND UNIT EFFICIANCY 1. LIQUID STREAM 1.1 RIVER INTAKE WORKS 1.1.1 General Description: 1.1.2 Intake Works Equipment 1.1.3 Intake Works Instruments 1.1.4 P&I Diagram 1.1.5 Process Description 1.1.6 CONTROL PHILOSOPHY 1.1.7 Equipment description, Operation, and Maintenance 1.1.7.1 Debris Removal System Trash rake 1.1.7.2 BELT CONVEYOR 1.1.7.3 Stop Logs 1.1.7.4 Radial Gates 1.1.7.5 Logboom 1.2 INTAKE STRUCTURE 1.2.1 General Description 1.2.2 Intake Chamber Equipment 1.2.3 Intake Chamber Instrumentation 1.2.4 Intake Structure P&I Diagram 1.2.5 Process Description 1.2.6 Kim Nguu Intake Structure Process description Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 3 1.2.7 CONTROL PHILOSOPHY 1.2.8 Intake Structure Equipments Description, Operation, and Maintenance 1.2.8.1 Penstocks 1.2.8.2 Mechanical Screen Description, Operation & Maintenance 1.2.8.3 SPIRAL PRESS CONVEYOR 1.2.9 Intake Structure Check List 1.3 KIM NGUU GRIT CHAMBER 1.3.1 General Description 1.3.2 KN Grit Chamber Equipment 1.3.3 P&I Diagram 1.3.4 Process Description 1.3.5 Control Philosophy 1.3.6 Equipment Description, Operation, and Maintenance 1.3.6.1 Grit Pumps 1.3.6.2 KN Grit Classifiers 1.3.6.3 KN Grit Chamber Penstocks 1.4 SET RIVER GRIT CHAMBERS 1.4.1 Set River Grit Chamber General Description 1.4.2 Set River Grit Chamber Equipment 1.4.3 Set River Grit Chamber P&I Diagram 1.4.4 PROCESS DESCRIPTION 1.4.5 CONTROL PHILOSOPHY 1.4.6 Equipment Description, Operation, and Maintenance 1.4.6.1 Grit Pumps 1.4.6.2 Grit Classifier 1.4.6.3 Penstocks 1.4.6.4 Multistage Pumps 1.4.7 Grit Chamber Checklist 1.5 KIM NGUU COARSE SCREEN 1.5.1 Kim Nguu Coarse Screen General Description 1.5.2 Kim Nguu Coarse Screen Equipment 1.5.3 Kim Nguu Coarse Screen Instruments 1.5.4 Kim Nguu Coarse Screen P&ID Diagram 1.5.5 Process Descrrription Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 4 1.5.6 Control Philosophy 1.5.7 Equipment Description, Operation, and Maintenance 1.5.7.1 Mechanical Coarse Screen 1.5.7.2 Penstocks 1.5.7.3 Conveyor 1.6 KIM NGUU EMERGENCY BYPASS SCREENS 1.6.1 Bypass Screen P&ID Diagram 1.6.2 PROCESS DESCRIPTION 1.6.3 CONTROL PHILOSOPHY 1.7 SET RIVER COARSE SCREENS 1.7.1 Set River Coarse Screen General Description 1.7.2 Set River Coarse Screen Equipment 1.7.3 Set River Coarse Screen Instruments 1.7.4 Set River P&I Diagram 1.7.5 Process Description 1.7.6 Control Philosophy 1.7.7 Equipment Description, Operation, and Maintenance 1.7.7.1 Mechanical Coarse Screen 1.7.7.2 Penstocks 1.7.7.3 Conveyor 1.8 SET EMERGENCY BYPASS SCREEN 1.8.1 Set River P&I Diagram 1.8.2 PROCESS DESCRIPTION 1.8.3 Control Philosophy 1.9 KIM NGUU RIVER MAIN INLET PUMPING STATION 1.9.1 Kim Nguu Main Inlet Pumping Station General Description 1.9.2 KN Main Inlet Pump Station Equipment 1.9.3 KN Main Inlet Pump Station Instrument 1.9.4 KN Main Inlet Pump Station P&ID Diagram 1.9.5 KN Main Inlet Pump Station Process Description 1.9.6 KN Main Inlet Pump Station Control Philosophy 1.9.7 KN Main Inlet Pump Station Equipment Description, Operation, & Maintenance 1.9.7.1 ABS Submersible Sewage Pumps 1.9.7.2 Penstocks Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 5 1.10 SET RIVER MAIN INLET PUMPING STATION 1.10.1 Set River Main Inlet Pumping Station General Description 1.10.2 Set River Main Inlet Pump Station Equipment 1.10.3 Set River Main Inlet Pump Station Instrument 1.10.4 Set River Main Inlet Pump Station P&I Diagram 1.10.5 Set River Main Inlet Pump Station Process Description 1.10.6 Set River Main Inlet Pump Station Control Philosophy 1.10.7 Set River Main Inlet Pump Station Equipment Description, Operation, & Maintenance 1.10.7.1 ABS Submersible Sewage Pumps 1.10.7.2 Penstocks 1.10.8 Main Inlet Pump Station Check List 1.11 PRELIMINARY TREATMENT WORKS FINE SCREEN 1.11.1 Preliminary Treatment Works General Description 1.11.2 Equipment 1.11.3 Fine Screen Instruments 1.11.4 Fine Screen P&I Diagram 1.11.5 Fine Screen Process Description 1.11.6 Fine Screen Control Philosophy 1.11.7 Fine Screen Equipment Description, Operation, and Maintenance 1.11.7.1 Bromet Fine Screen 1.11.7.2 Penstocks 1.11.7.3 Conveyor 1.11.8 Fine Screen Checklist 1.12 EMERGENCY BYPASS SCREEN 1.12.1 P&I Diagram 1.12.2 Process Description 1.12.3 CONTROL PHILOSOPHY 1.13 PRELIMINARY TREATMENT WORKS GRIT GREASE REMOVAL SYSTEM 1.13.1 Grit Grease removal General Description 1.13.2 Grit Grease removal Equipment 1.13.3 Grit Grease removal Instrument 1.13.4 Grit Grease removal P&I Diagram 1.13.5 Grit Grease removal Process Description 1.13.6 Grit Grease removal Control Philosophy Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 6 1.13.7 Grit Grease removal Equipment Description, Operation, and Maintenance 1.13.7.1 Travelling Bridge Scraper 1.13.8 Grit Grease Channel Checklist 1.14 GRIT REMOVAL PUMPS 1.14.1 General Description 1.14.2 Grit Removal Pumps Equipment 1.14.3 Grit Removal Pumps Instrument 1.14.4 Grit Removal Pumps P&I Diagram 1.14.5 Grit Removal Pumps Process Description 1.14.6 Grit Removal Pumps Control Philosophy 1.14.7 Grit Removal Pumps Equipment Description, Operation, and Maintenance 1.14.8 Grit Pumps and Classifiers Checklist 1.15 PRELIMINARY TREATMENT WORKS GRIT CLASSIFIER 1.15.1 Grit Classifier General Description 1.15.2 Grit Classifier Equipment 1.15.3 Grit Classifier Instrument 1.15.4 Grit Classifier P&I Diagram 1.15.5 Grit Classifier Process Description 1.15.6 Grit Classifier Control Philosophy 1.15.7 Grit Classifier Equipment 1.15.7.1 Grit Classifiers 1.16 GRIT/ GREASE REMOVAL TANK AIR BLOWERS 1.16.1 General Description 1.16.2 Air Blowers Equipment 1.16.3 Air Blowers Instruments 1.16.4 Air Blowers P&I Diagram 1.16.5 Air Blowers Process Description 1.16.6 Air Blowers Control Philosophy 1.16.7 Air Blowers Equipment Description, Operation, and Maintenance 1.16.8 Grit Grease Air Blowers Checklist 1.17 SEQUENTIAL BATCH REACTOR 1.17.1 General Description 1.17.2 Equipment Inventory of a SBR Basin 1.17.3 Instrumentation Inventory of a SBR Basin Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 7 1.17.4 SBR P&I Diagram 1.17.5 SBR Process Description 1.17.6 SBR CONTROL PHILOSOPHY 1.17.7 SBR Equipments Description, Operation, and Maintenance 1.17.7.1 WAS & RAS Pumps 1.17.7.2 Surface Skimming Decanters 1.17.8 SBR Basins Checklists 1.18 SBR AIR BLOWERS 1.18.1 General Description 1.18.2 Air Blowers Equipments 1.18.3 Air Blowers Instruments 1.18.4 Air Blowers P&I Diagram 1.18.5 Air Blowers Process Description 1.18.6 CONTROL PHILOSOPHY 1.18.7 Air Blowers Equipment Description Operation, and Maintenance 1.18.7.1 Air Blowers 1.18.8 Air Blowers Checklist 1.18.8.1 Air Diffusers 1.19 SBR AIR BLOWERS COOLING SYSTEM 1.19.1 General Description 1.19.2 Cooling System Equipment 1.19.3 Cooling System P&I Diagram 1.19.4 Cooling System Process Description 1.19.5 CONTROL PHILOSOPHY 1.19.6 Cooling System Equipment Description, Operation, and Maintenance 1.19.6.1 Cooling Tower 1.19.6.2 Cooling Pump 1.20 TERTIARY TREATMENT WORKS 1.20.1 General description 1.20.2 Equipment 1.20.3 INSTRUMENT 1.20.4 P & ID 1.20.5 PROCESS DESCRIPTION 1.20.6 CONTROL PHILOSOPHY Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 8 1.20.7 EQUIPMENT DESCRIPTION OPERATION & MAINTENANCE 1.21 MEMBRANE FEED PUMPS 1.21.1 General description 1.21.2 Membrane Feed Pumps P&I Diagram 1.21.3 PROCESS DESCRIPTION 1.21.4 CONTROL PHILOSOPHY 1.22 MEMBRANE PLANT 1.22.1 GENERAL DESCRIPTION 1.22.2 INSTRUMENT 1.22.3 P&I Diagram 1.22.4 EQUIPMENT DESCRIPTION OPERATION & MAINTENANCE 1.23 SERVICE WATER SYSTEM 1.23.1 General Description 1.23.2 General Description 1.23.3 PROCESS DESCRIPTION 1.23.4 CONTROL PHILOSOPHY Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 9 I) INTRODUCTION Volume II A is intended to provide single source of reference on the system and equipment installed in the waste water treatment facilities. This manual is an introduction to operation and maintenance (O&M) of specific system and equipment and is not meant to supersede the manufacture‘s specification or information. The drawing and references contains with in this text may or may not be (As-built) records audit from original construction documents depending on the condition of the reference material used at the time. The intent is to reflect the actual, or as close as possible, to the installed condition of the system and equipment. Original manufacturers‘ drawing, systematic, specification, and information have been used to the fullest extent. This manual is divided into 18 sections, each section contains:  Brief about the general process, and detailed design data.  Plan layout.  Equipments  Instruments  P&ID  Process description.  Control philosophy.  Equipment description, and operation  Equipment maintenance.  Troubleshooting  Checklist This manual should be considered a living document, and as such, it should be on enhanced throughout the life of the plant. Therefore, operational characteristics, maintenance procedures, and O&M data for equipment and system should be updated as equipment/system are developed, deleted, modified, and/or upgraded. Note:  This manual provides a brief detail about equipment operation and maintenance, for more information please refer to individual operation manual in volume III.  This manual dose not includes the electrical equipment; details of electrical equipments description operation, and maintenance are available in volume 2B. Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 10 II) DESCRIPTION The Yen So Sewage Treatment Plant is located in Hoang Mai district, about 6km south of Hanoi, Vietnam. The influents derive from two 'River' sources, which are currently used as open sewer culverts that are also subject to storm water flows. The flow is screened, degritted and degreased prior to sequencing batch reactor activated sludge technology followed by UV and membrane treatments for proportions of the SBR treated flows. SBR flows are discharged to the Kim Nguu River, while UV disinfected effluents are discharged to the Yen So lakes. Membrane treated SBR effluent is for works reuse Yen So Treatment Plant consist of 1. Liquid Stream 2. Sludge Stream 3. Odour Management 4. Support Structures Yen So Liquid Stream Layout PTW MIPS Intake Structure SBR Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 11 1 2 [...]...Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 3 1,2& 3 Yen So Sludge Stream Layout Yen So Odour Control Units Layout 12 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Yen So Support Structures 13 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A III) OVERALL PROCESS DESCRIPTION... instrument, the PLC will use the last known value for control purposes and an alarm raised at the PLC, unless stated otherwise 19 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A V) MAINTENANCE OF SEWAGE TREATMENT PLANT Preventative Maintenance Routine inspection and maintenance is important in preventing breakdown and help to prolong the service life of the equipment and... recommended by the manufacturer 20 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Breakdown Maintenance Breakdown maintenance is undertaken "on demand" when an equipment can no longer be operated The Breakdown Maintenance has two components: 1 Defect or malfunction covered within the defects liability period :  Defective or Insufficient Design;  Defective Materials;... mode will be via operator intervention at or immediately adjacent to the equipment All control of the equipment via any works PLC, specific control equipment in the field, relevant MCC or local control panel will be disabled All specific automated sequences associated with the equipment will be inhibited 17 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A c Hardwired Control... m³/s Equivalent diameter 923 mm Equivalent velocity 1.754 m/s Total straight length of 70 m 26 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Total losses from SBR effluent channel exit to the River Straight Line Losses 0.187 m Fittings Losses 0.235 m Total Losses 0.422 m TWL in the River 5.700 mAD TWL at the entry to the culvert 6.122 mAD Penstock from SBR effluent channel... effluent limit 1 pH - 6-9 2 BOD5 mg/l 30 3 COD mg/l 50 4 Suspended Solids mg/l 50 31 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 5 Total Oil & Grease  Mineral oil & grease mg/l 5  Animal- vegetable Fat & Oil mg/l 10 i6 Ammonia (as N) mg/l 5 7 Total Nitrogen mg/l 15 8 Total phosphorous mg/l 4 32 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume. .. influent sewage gravitate to the works, pass through a second set of screens, and be pumped to the preliminary treatment facilities for screening, grit and grease removal 34 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Set Trash rake 35 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Table Flows to intake structures ADWF (m³/d) Peak Flow* (m³/h)... sensor On-line Analyzer sensors Lead gasket Ammonia solution Refrigerant for air-conditioning unit Laboratory Chemicals / Reagent Light Bulbs / Fluorescent Tubes and starters Fuses / MCB Wear Pads/Shoes for Sludge Scraper Wear & Tear Items Paint Items necessary for the maintenance of Infrastructure: (Structures, Chambers, Buildings, Roads, Drains, Embankments, Fences etc.) 22 Yen So Sewage Treatment... to a membrane plant for treatment to be recycled back into the sewage treatment plant The remaining treated effluent from the UV plant gravitates to south of the site to enter Yen So Lake I (Pond) 27 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A Straight line losses from UV outlet to the Pond When membrane feed pumps are running, Treated flow from UV disinfection 1.539... Maintenance Manual Volume II A item Description No Diameter Channel Width (mm) Channel Depth (m) Pipe/Channel length (m 6 SBR effluent channel 1 - 2.0 - - 7 Grit/Grease outlet/ SBR inlet channel 1 - 1.7 - - 8 SBR inlet channel (after split) 2 - 1.5 - - 9 Grit/Grease outlet channel 1 - 1.7 - 17 24 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A VII) HYDRAULIC PROFILE Yen . PHILOSOPHY Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 9 I) INTRODUCTION Volume II A is intended to provide single source of reference on the system and. operation manual in volume III.  This manual dose not includes the electrical equipment; details of electrical equipments description operation, and maintenance are available in volume 2B. Yen. Treatment Plant - Operations and Maintenance Manual Volume II A 11 1 2 Yen So Sewage Treatment Plant - Operations and Maintenance Manual Volume II A 12 3 1,2& 3 Yen So Sludge Stream