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Waste water treatment

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Acute Shortage of water which mankind faces today is due to rampant pollution and extravagant use. Treating water with care to meet the quality requirement is the need of the hour. We at Canadian Clear, remove pollutants from wastewater, recycle and recover the other valuable products for reuse, reducing waste and pollution, in short, protecting the environment. – PowerPoint PPT presentation

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Updated: 5 April 2016
Slides: 17
Provided by: canadianclear123

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Title: Waste water treatment


1
(No Transcript)
2
Sewage and Effluent Treatment
3
Topic To Cover
  • Overview Wastewater Engineering
  • Wastewater Characteristics
  • Wastewater Treatment Considerations
  • Overview Wastewater Treatment Plant Design
  • Physical, Chemical and Biological Processes

4
Overview Wastewater Engineering
  • Sludge Treatment
  • Sludges are the product of biological treatment
    of wastewater
  • Sludges comprise solids found in wastewater plus
    organisms used in the treatment process
  • Disposal is a major issue
  • Various disposal techniques are used but each has
    advantages and disadvantages

5
Wastewater Engineering
  • Water Disposal and Re-Use
  • Wastewater treatment generates a Cleaned Water
    Stream
  • Cleaned water is often discharged to a larger
    body of water for dilution
  • Alternatively, cleaned water my be re-used for
    irrigation or rarely drinking water production

6
Wastewater Characteristics
  • Characteristics are normally estimated by
    empirical methods
  • Wastewater Flows
  • Flows arise from households, industry,
    infiltration and storm flows
  • Flows are considered in both hydraulic and
    process design
  • Levels of treatment may vary for different
    flowrates

7
Wastewater Characteristics
  • Wastewater Flows
  • There is a variety of methods for estimating
    flowrates
  • However there may be great variability in the
    factors which affect flowrates from region to
    region
  • Different multiples of the Dry Weather Flow will
    receive each level of treatment

8
Wastewater Characteristics
  • Wastewater Composition
  • Key design issues
  • Solids density, particle size, level of Volatile
    Suspended Solids
  • Biochemical Oxygen Demand
  • Temperature
  • Ammonia
  • Nutrient levels

9
Wastewater Characteristics
  • Wastewater Treatment Considerations
  • Objective to maintain or improve the quality of
    the receiving body of water
  • Treatment stages
  • Preliminary
  • Primary
  • Secondary
  • Tertiary

10
Wastewater Characteristics
  • Applicability and Selection of Methods
  • Different processes are used to treat wastewater
    depending on the contaminants present
  • Similarly, different processes are used to treat
    sludges, depending on the objective of treatment

11
Overview Wastewater Treatment Plant Design
  • Flowrate and Mass Loading
  • Wastewater feed is not specified, therefore the
    plant must be able to treat whatever the
    wastewater contains
  • Plant design will take account of historical
    flows and loadings, but must also be able to deal
    with expansion
  • Plant must also be able to deal with a range of
    flow and load conditions, plus peak upstream flow
    conditions (eg storms)

12
Wastewater Treatment Plant Design
  • Selection of Design Flowrates
  • Domestic based on a flow per head. Varies
    between countries
  • Industrial Based on records of discharge
    consents and of metered supplies
  • Infiltration/Exfiltration based on a of the
    domestic flow
  • Peaking Factors Depends on size of community

13
Wastewater Treatment Plant Design
  • Selection of Design Flowrates
  • Upstream Flow Equalisation
  • Plants are not normally designed to treat total
    peak arisings
  • Instead, hydraulic controls will direct flows
    above plant capabilities to storm system on
    larger works

14
Wastewater Treatment Plant Design
  • Selection of Design Flowrates
  • Upstream Flow Equalisation
  • For larger works with storm tanks, only Full
    Treatment Flow (FTF) will receive full
    treatment.
  • FTF3PG3EI
  • Formula A-FTF will pass to storm tanks

15
Wastewater Treatment Plant Design
  • Selection of Design Mass Loadings
  • Average mass loadings for BOD and Suspended
    Solids are commonly determined by Population
    Equivalent (PE)
  • Design mass loadings are more complex and must
    take account of seasonal, diurnal and industrial
    load variations

16
Shivsu canadian clear
  • For more detail contact us.,
  • No.149, Poonamallee High Road, (E.V.R Lane)
    Kilpauk, Chennai-600 010,
  • India. 1-800-425-20000 91-44-28362461 - 71
    91-44-28362470
  • Mail Id
  • support_at_canadianclear.com
  • info_at_canadianclear.com
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