2003 Annual Wastewater School for Wastewater Treatment Plant Operators - PowerPoint PPT Presentation

About This Presentation
Title:

2003 Annual Wastewater School for Wastewater Treatment Plant Operators

Description:

Slide 12 Conventional Wastewater Treatment Process Slide 14 Designing a WWTR Scheme Basic Design Parameters Considerations Wastewater Treatment Biological Unit ... – PowerPoint PPT presentation

Number of Views:1940
Avg rating:3.0/5.0
Slides: 46
Provided by: Mary183
Category:

less

Transcript and Presenter's Notes

Title: 2003 Annual Wastewater School for Wastewater Treatment Plant Operators


1
CEPS-PCSIR
2
CEPS-PCSIR
3
Session
CEPS-PCSIR
4
The Global Situation
5
(No Transcript)
6
CEPS-PCSIR
Freshwater Availability Scenario (Per Person)
Environmental source draft 2005
7
Fresh Water
CEPS-PCSIR
The Role of Wastewater
8
Meeting The Challenge To Improve Water
Wastewater Quality in The New Millennium
CEPS-PCSIR
9
CEPS-PCSIR
Physical Characteristics of Waste Water
10
CEPS-PCSIR
Chemical Characteristic of Waste Water
11
Where does it all go!
CEPS-PCSIR
Where does the water from the washer go?
By gravity flow, the waste is on its way to your
local wastewater treatment plant!
12
CEPS-PCSIR
Level of Treatments
Preliminary Removal of wastewater constituents such as rags, sticks, floatable, grit and greases that may cause maintenance or operational problems with the treatment operations, processes and ancillary systems
Primary Removal of a portion of the suspended solids and the organic matters from the wastewater
Advanced Primary Enhanced removal of suspended solids and organic matter from the wastewater. Typically accomplished by chemical addition or filtration
Secondary Removal of biodegradable organic matter ( in solution or suspension) and suspended solids.
Secondary with Nutrient Removal Removal for biodegradable organics, suspended solids and nutrients (Nitrogen, phosphorous or both)
Tertiary Removal of residual suspended solids (after secondary treatment) usually by granular medium filtration or micro-screens. Disinfection is also typically a part of tertiary treatment. Nutrients removal is often included in this definition.
Advance Tertiary Removal of dissolved and suspended material remaining after normal biological treatment when required for various water reuse applications.
13
Conventional Wastewater Treatment Process
CEPS-PCSIR
  • Pretreatment involves
  • Screening
  • Grit Removal
  • Oil separation
  • Flow equalization
  • Chemical Treatment is used in conjunction with
    the physical and chemical processes
  • Chemical precipitation
  • Adsorption

Sludge Treatment and Disposal involves grinding,
degritting, blending, thickening, stabilization,
conditioning, disinfection, dewatering, heat
drying, thermal reduction, ultimate disposal
  • Disinfection can use
  • Chlorine compounds
  • Bromine Chloride
  • Ozone
  • UV Radiation

14
CEPS-PCSIR
Flow Sheet of Wastewater Treatment Plant
15
Designing a WWTR Scheme
CEPS-PCSIR
16
Basic Design Parameters Considerations
CEPS-PCSIR
17
Wastewater Treatment Biological Unit Operations
CEPS-PCSIR
18
Activated Sludge Process
CEPS-PCSIR
19
Design of Aeration Systems...
CEPS-PCSIR
20
To tertiary process
From primary process
Settling collects sludge on bottom
Aeration and rapid mixing
air diffuser
21
Aeration Systems
CEPS-PCSIR
( 1 ) Compressed air diffusion...
( 2 ) Submerged turbine aeration...
( 3 ) Motor - speed ( high ) surface aeration...

22
Advantages/Disadvantages
CEPS-PCSIR
23
Trickling Filters
CEPS-PCSIR
24
Advantages/Disadvantages
CEPS-PCSIR
25
Rotating Biological Contactors (RBC)
CEPS-PCSIR
26
Advantages/Disadvantages
CEPS-PCSIR
27
Selection of Technology
CEPS-PCSIR
28
Chemical Coagulation
CEPS-PCSIR
  • Lime Heavy metals Alum SS removal
  • SS removal P removal
  • P removal
  • Polymer - SS control Iron SS removal
  • P removal
  • Mechanism
  • Destabilization by ionic charge neutralization
  • Reduce charge that keeps small particles apart

Aluminum sulfate
Ferric chloride Ferric sulfate Ferrous sulfate
_
_
_
_




_
_
_
_




_



_
_
_
_


_



_






_

_
_
_

_




_
_
_
_
_
_

_
_
_







29
Flocculation
CEPS-PCSIR
  • Purpose
  • Produce larger, more dense floc particles that
    will settle or filter easily
  • Application
  • Gentle mixing after rapid mix (coagulation)
  • Mixing Mechanical or Aeration

Q
Infl Q
Gentle Mix / Flocculation
Rapid Mix / Coagulation
Sludge
30
Costs
CEPS-PCSIR
31
CEPS-PCSIR
32
CEPS-PCSIR
Sewage treatment Plant in PCSIRAeration Tank
33
CEPS-PCSIR
Sewage Treatment Plant in PCSIR
34
CEPS-PCSIR
Wastewater Parameters of Sewage Treatment Plant
in PCSIR
Effluent Results (IN) Effluent Results (IN) Effluent Results (IN) Effluent Results (IN) Effluent Results (IN) Effluent Results (IN) Effluent Results (IN) Effluent Results (IN)
Parameters Unit Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals
Total Dissolved Solids (TDS) mg/L 1695 960 931 1102 1068 1057
Suspended Solids mg/L 324 301 287 277 304 305
BOD5, 20oC mg/L 124 127 131 120 115 130
COD mg/L 219 212 208 227 205 221
Chlorides mg/L 50 69 55 63 70 54
Sulphide mg/L 11.5 9 4 10 5 9
Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT) Treated Wastewater Results (OUT)
Parameters Unit Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals Different Time Intervals
Total Dissolved Solids (TDS) mg/L 1688 941 902 1069 1049 1032
Suspended Solids mg/L 7 5 5 4 7 5
BOD5, 20oC mg/L 12 8 10 9 7 9
COD mg/L 19 22 18 18 16 19
Chlorides mg/L 50 69 55 63 70 54
Sulphide mg/L 1 1 0 0 0 1
35
CEPS-PCSIR
BOD, COD and TSS Comparison (IN OUT)
36
Effluent Disposal and utilization
CEPS-PCSIR
37
CEPS-PCSIR
Use of Sewage Treatment Plant for Agriculture
Sector
38
CEPS-PCSIR
Use of Sewage Treatment Plant for Agriculture
Sector
39
CEPS-PCSIR
Use of Sewage Treatment Plant for Agriculture
Sector
40
CEPS-PCSIR
Use of Sewage Treatment Plant for Agriculture
Sector
41
CEPS-PCSIR
Positive Effects of Wastewater
42
CEPS-PCSIR
Negative Impacts of Wastewater

43
CEPS-PCSIR
Conclusion

44
CEPS-PCSIR
Acknowledgment
45
CEPS-PCSIR
For any question, Please
sahalirfan_at_yahoo.com
Write a Comment
User Comments (0)
About PowerShow.com