phase of environmental project (from tendering to construction)
TRANSCRIPT
Environment• Comprises of our surroundings• Air• Water• Soil• others
Pollution
Human activities Deforestation Industrialization Uncontrolled Discharges
Water Treatment
Domestic sewage Industrial Effluent Drinking water treatment
Type of treatment
Primary treatment Secondary Aerobic Anaerobic Anoxic Tertiary
Projects
Drinking Water Treatment Projects Jackwell, pipeline and ESR construction for water supply Water supply Networking Sewage Treatment Plants UGD for cities Industrial Effluent Treatment projects CETP Operation and Maintenance
Tender
Prepare tender document by reputed consultants Government Bodies call for tenders Specify Requirements Floats tender via various Media Calls for bidding
Tender Contents
Important Dates Scope of work PRQ Pre-bid Details Technical Details Financial details (project Estimated cost) Bidding process Cost Breakups
Working Process Design (units its sizing and Process flow drawing) Civil Estimation ( Quantities) Mechanical Estimation ( Equipment's, Pipes, Valves,) Instrumentation Estimation ( Scada Design and Estimation) Electrical Estimation ( Power Requirement, Costing) Operation and Maintenance ( Labor, Chemical, Power Requirement
Etc) Over all cost calculation Cash flow preparation Construction schedule preparation. E-Portal Submission of Documents and EMD
Notifications
After successful submission check for regular notification. Date of opening of Technical BID. Date of opening of Financial BID. Lowes BID qualification. Award of contract.
Project Phases Preparation of Technical Documents Getting approval from consultant and client. Process Design calculations Mass Balance Hydraulic Design Calculations Drain Calculations Plant Water Utility Datasheet for mechanical Equipment's Structural Design calculations
Drawing Approvals PFD Layout Hydraulic Flow Drawing Mass Balance P&ID Mechanical GA Equipment GA Civil GA Structural Drawing
Mean while at site Topographical Survey Completion Site Mobilization Site Clearing Compound Structure Drainages Excavations
Site Progress
After approval of drawings construction commences. As per Planned Construction Schedule. Getting Release of RA Bills as per the progress of work. Hydraulic Testing of Structures Mechanical Equipment's Installations Testing of Equipment's Completion of work and trial run
Operation and Maintenance
Flow measurement Inlet Parameter Analysis Stabilize the STP Culture Development Chemical Dosing Achievement of said outlet parameter Trouble shooting
Design Glimpse Analyze the type of effluent to be treated Collect population density of area and sources of waste generation Collect Flow quantity (hydraulic Loading) Collect Effluent Quality parameters (Organic Loading) Analyze and plan process design units Collect standards required from Standard Manuals (CPHEEO) Collects Requirements Specified by Client Collect Area Available for construction and inlet point of effluent
Designing A sewage Treatment plant will be designed with following flow SPS (sewage Pumping Station) MPS (Main Pumping Station) STP (Sewage Treatment Plant) Disposal of Treated Sewage Treatment Of Sludge and its Disposal
MPS (Main Pumping Station) Why ? Units Inlet chamber Course Screen Channel Wetwell Pumps and pumping main
STP Receives Flow from MPS/ISPS Units Inlet chamber Fine screen Channel Grit Chamber Flow Measurement Secondary Treatment unit (SBR, ASP, MBBR,)(Digester, Trickling Filter
etc) Clarifier Disinfection unit (CCT) Disposal or Tertiary treatment
Sludge Treatment
Sludge Sump Gravity Sludge Thickener (GST) Sludge Digester/Sludge Holding Tank Gas Holder, Power Generation units Centrifuge/Belt Filter Sludge Cake Disposal
Wet well construction
Illustrative photos
Digester lamella clarifier, Biotower
Aeriation Tank
Anaerobic tanks
Complete plant, Digesters and gas holders
Thank you