Uploaded on

ON WATER TREATMENT PLANT

ON WATER TREATMENT PLANT

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
364
On Slideshare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
3
Comments
0
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1.  
  • 2. A DESIGN MODEL OF A WASTE WATER TREAMENT PLANT IN A MINERAL PROCESSING MILL USING PLANT DESIGN MANAGEMENT SYSTEM ( PDMS ) A DESIGN MODEL OF A WASTE WATER TREAMENT PLANT IN A MINERAL PROCESSING MILL USING PLANT DESIGN MANAGEMENT SYSTEM ( PDMS )
  • 3. SHEU A. BASHARU, M. N. S. USAINI AND M. ALI
  • 4. ABSTRACT
  • 5.
    • Water (H 2 O)
    • is the most abundant compound, covering about
    • 70%
    • of the earth surface.
    INTRODUCTION
  • 6. Therefore ,
    • when water is contaminated, it is said to be polluted.
  • 7.
    • Water is essential to life on our planet; a prerequisite of sustainable development must be to ensure uncontaminated streams, rivers, lakes and oceans.
    (Nigerians Minerals and Mining Act, 2007);
  • 8.
    • Mining and Mineral Processing activities constitute the major causes of water Pollution through large amounts of water utilized in the processing of ores in mills, which when discharged pollute environmental water bodies.
    • Because of these problems and assertions raised by NMMA, 2007 ; this then call for a research on a design model of a Waste Water Treatment Plant in a Mineral Processing mill using PDMS in order to tackle the problem caused by water pollution from Mining and Mineral Processing Activities.
    Therefore,
  • 9.
    • recovery and reuse of mineral processing mill waste water;
    • removing the pollutants from the waste water;
    • recovery of some saleable products from mill waste water;
    • the treatment plant to supply fresh water to the host community;
    Specifically, the research will provide design for: Aims and Objectives of the Research
  • 10.
    • Acid Mine Drainage
    • Heavy Metal Contamination & Leaching
    • Processing Chemicals Pollution
    • Erosion and Sedimentation
    Types of Water Pollution from Mining/Mineral Processing Activities
  • 11. History of Water Treatment Engineering History of Water Treatment Engineering History of Water Treatment Engineering History of Water Treatment Engineering History of Water Treatment Engineering History of Water Treatment Engineering History of Water Treatment Engineering
  • 12. Development of Water Treatment Design Projects
    • The period before construction commences can generally be divided into the following phases:
    • Master planning
    • Process train selection
    • Preliminary design
    • Final design
  • 13. Multidiscipline Teams for Design of Mill Waste Water Treatment Plant
    • • Process engineers
    • • Plant operations specialists
    • • Structural Engineers
    • • Piping Engineers
    • • Civil Engineers
    • • Instrumentation and control engineers
    • • Health and safety specialists
    • • Environmental scientists
    • For a water treatment plant in a mineral processing mill, the following engineers are added to the team;
        • • Mineral Processing Engineers
        • • Metallurgists
  • 14. INTRODUCING VANTAGE PDMS
    • PDMS means Plant Design Management System. It is therefore the accepted CAD software for all engineering designs as it allows for all forms of configurations.
    • The PDMS login form looks like this,
    Project : WATER TEATMENT PLANT Username : SYSTEM PASSWORD : XXXXXX MDB: SAMPLE Module: DESIGN Load from : Macro files
  • 15. INTRODUCING VANTAGE PDMS (CONTD)
    • The PDMS Startup Display , when PDMS has loaded the screen looks like this,
  • 16. THE DESIGN MODEL OF THE PLANT
    • For the purpose of this research work, two design models were compared, as shown below;
    • DESIGN MODEL 1
  • 17. THE DESIGN MODEL OF THE PLANT (CONTD)
  • 18. THE DESIGN MODEL OF THE PLANT (CONTD)
    • DESIGN MODEL 2
    THE DESIGN MODEL OF THE PLANT (CONTD) DESIGN MODEL 2
  • 19. DESIGN MODEL OF THE PLANT (CONTD)
    • Design model 2 involves the following steps:
    from the mill Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Treatment of mill water for beneficial use and discharge Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Treatment of mill water for beneficial use and discharge Recovery and beneficial use of water on mill complex Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Treatment of mill water for beneficial use and discharge Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge Pollution prevention at all sources from the mill Minimization of potential impacts by mitigation measures Recovery and beneficial use of water on mill complex Treatment of mill water for beneficial use and discharge
  • 20. DESIGN MODEL OF THE PLANT (CONTD)
    • Treatment Plant technology involved in Design 2
    • Treatment Plant technology involved in Design 2
    • Treatment Plant technology involved in Design 2
    • Treatment Plant technology involved in Design 2
    • Treatment Plant technology involved in Design 2
    • Treatment Plant technology involved in Design 2
    Mine waste water treatment plant technology Mine waste water treatment plant technology
  • 21. DISCUSSION
    • The major processes involved in the treating of mill waste water due to harmful contaminants in it, these processes are:
    • Aeration and Air Stripping Process
    • Mixing Coagulation and Flocculation
    • Sedimentation Process
    • Filtration Process (High Rate Granular Media)
    • Oxidation and Disinfection
    • Lime Softening
    • Ionic Exchange Processes
    • Membrane Processes
    • Activated Carbon Processes
    • Ultra – Violent Light Process
    • The design 1 carryout processes such as aeration, coagulation, sedimentation, filtration, backwashing and disinfection due to limitations in it design parameters.
  • 22. DISCUSSION (Contd)
    • From the foregoing, we can deduce that the costs involved in constructing and operating a waste water treatment plant from mineral processing mill can be broadly divided into two categories:
    • investment costs and
    • operating expenses.
    • The investment costs include following under – listed costs:
    • Preliminary studies;
    • Acquisition of site and building planning;
    • Project costs such as design, EIA etc;
    • Civil work, equipment & instrumentation costs, Construction and installation;
    • Commissioning (i.e. testing and accepting the installation) and start-up costs.
    • Operating costs generally includes items such as:
    • Personnel;
    • Maintenance costs;
    • Operational costs: chemicals, utilities, lab supplies, office supplies etc.;
    • Aeration costs (electricity);
    • Sludge disposal costs.
  • 23. DISCUSSION ( Contd )
    • DESIGN 1
    • It is a model for a small scale mill, where simple ore is processed. Its configuration is such that it allows for particle size of contaminants in micro meter. The design model is therefore affected by physical nature, chemical composition and type of contaminants. It is cost effective for a small scale mill.
    • DESIGN 2
    • It explains a model for a large scale mill that can process all sort of ores particularly complex ore. Its configuration is such that it allows for varying sizes of contaminants. It is not affected by the type of contaminants, chemical composition and physical nature of the contaminants. It is restricted to large scale mill that can pay for its maintenance cost and other miscellaneous expenses.
  • 24. CONCLUSION
    • Plant Design Management System (PDMS) is the only Computer – Aided – Design (CAD) Software that allows for any type of configuration in the design of any process plant as it was pointed out from above. It gives room for all designers working on a project to work simultaneously without interfering with each other’s work. The designers includes; structural engineers, civil engineers, process engineers, electrical engineers, mechanical engineers and piping engineers, hence it can adequately be applied in Mineral Process Mill Waste Water Treatment Plant .
    • This is not the same with other design software like CADWORX , the entire work is designed by a designer because it not a management system as a result such design is not perfected and does not allow for varying configuration types as the PDMS does.
  • 25. for