grey water treatment plant

1. Buddha Institute of Technology
Gida Gorakhpur
Presented by:- Under the guidance of
Ashutosh Mishra Mr. Neeraj Chaubey
Mantoo Nishad (Deptt. Of Civil Engg )
Durgesh Singh
Pawan Kumar Yadav
Nitin Maddhesia
Grey water treatment plant for BIT (hostel)
Project Presentation 2015-16

2. Now with the growing population it is very necessary to
reuse the raw water mostly for Indian country where more
than 70% people depends upon the agriculture where
there is not a fix time for rain and former is mostly depends
Upon tubell, well and canal in that way grey water is also a
medium for irrigation.
INTRODUCTION

3. WHAT IS GREAY WATER
• Greywater is all wastewater that is discharged from a house,
excluding blackwater (toilet water). This includes water from
showers, bathtubs, sinks, kitchen, dishwashers, laundry tubs,
and washing machines It commonly contains soap, shampoo,
toothpaste, food scraps, cooking oils, detergents and hair.
Greywater makes up the largest proportion of the total
wastewater flow from households in terms of volume. Typically,
50-70% of the household wastewater is greywater. If a
composting toilet is also used, then 100% of the household
wastewater is greywater.

4. 2nd Qtr
3rd Qtr
31% Black Water
69% Grey Water
PERCENTAGE OF GREY& BLACK WATER
Toilet
31%
Bath/Landry
33%
Kitchen
33%

5. TYPE OF GREY WATER
There is mainly two type of greywater
 Low loaded greywater (raw water coming out from shower,
bathtubs & handbesins.)
 High loaded greywater (raw water coming out from kitchen,
dishwasher, washing machine.)

6. Grey water characteristics and composition
Greywater is a reflection of the household activities and its characteristics are
strongly dependent on living standards, social and cultural habits, number of
household members and the use of household chemicals.
Composition-
 S
 Ph
 K
 N
 Ca

7. Why greywater recycling?
 The main purpose of greywater recycling is to substitute the precious drinking
water in applications which do not require drinking water quality. Non-potable
reuse applications include industrial, irrigation, toilet flushing and laundry
washing dependent on the technologies utilised in the treatment process .
 it is possible to reduce the amounts of fresh water consumption as well as
wastewater production

8. APPROACHES TO GREYWATER TREATMENT
AND REUSE
• (1) Diversions systems: direct greywater from the laundry or bathroom to
the garden for immediate use in restricted irrigation, without making
changes to its quality. The water is not stored for more than a few hours, if
at all.
• (2) Treatment systems: improve the quality of the greywater by filtering,
treating and disinfecting it. Treated greywater can be stored for longer
periods without the risk of it going septic and causing odour nuisances. Its
higher quality and ability to be stored means that it can be used for more
purposes, including garden watering and irrigation, toilet flushing and
laundry washing.

9. GREYWATER VS RAIN WATER HARVESTING
• Unlike rainwater harvesting, greywater recycling is not dependent on
season or variability of rainfall and as such is a continuous and a reliable
water resource. This results in smaller storage facilities than those
needed for rainwater harvesting. Greywater has a relatively low nutrient
and pathogenic content and therefore, it can be easily treated to a high-
quality water using simple technologies such as sand/gravel filters

10. HOW IS GREYWATER REUSED?
 Toilet flushing
 Gardening and Irrigation
 Washing machines
 Car washing
 Fire fighting
 Industrial uses

11. BENEFITS OF GREYWATER RECYCLING
• greywater recycling saves water and reduces the amounts of fresh, high-
quality drinking water by substituting the water demand not intended for
drinking
• on-site greywater treatment reduces the volume of wastewater that must
be diverted to more costly sewage and septic treatments
• greywater is rich in phosphorous, potassium, and nitrogen, making it a
good nutrient or fertilizer source for irrigation
• localized greywater systems decrease freshwater use for transportation
and treatment of wastewater

12. HOW IT IS SAVE THE WATER POTENTIALITY
• Greywater systems bring significant savings in fresh drinking water in
addition to reducing the amounts of generated wastewaters, thus easing
the pressure on the environment. In general, low-energy systems should
be preferred over high-expenditure systems.

13. GREY WATER TREATMENT PLANT
• Used for treating the grey water.

14. IT IS BASICALLY CONSIST OF –
 Plumbing System

15. • Surge tank

16. • Filter
• Basically slow/rapid sand filter is used for the filter of grey water

17. Pump
Irrigation System

18. HOW IS IT WORK
• It works on the theory of filtration that is-
 Mechanical straining
 Sedimentation
 Biological activity
 Electrolytic changes

19. WHAT WE WILL DO NEW THING IN OUR PROJECT
• use of concrete to constructing the filter
• Use of perforated pipe to carrying the filtrate water
• Based on filtration theory
• Emergency storage of raw & filtrate water

20. GREY WATER TREATMENT PLANT IN INDIA
 India is Highly populated country
 Uneven rainy season
 Treated water is full of rich nutrients (S,N,Ph,K)
 It will be save our water bill

21.  To determine the quantity and quality of grey water.
 Design the various system components for the
grey water collection and treatment.
SPECIFIC OBJECTIVE

22. METHOD FOR QUANTIFICATION OF GREY
WATER
1- Direct method
 Water meter method
 Bucket method
2- Indirect method

23. QUANTITY OF GREY WATER DISCHARGE FROM
BIT BOYS HOSTEL (FLOOR NO.2)
Based on indirect method the quantity of grey water is
about 50-60% of total water consumption .So a correlation is
developed between number of student in the hostel and
grey water generation based on the data collected.

24. QUANTITY OF GREY WATER & BLACK WATER
• According to BIS water required /p/l/d=180L
• 65% water is change in to grey water of total consumed water
Hence-
Grey water generated from BIT (Hostel)=
180*65/100=117lpcd*50person=5850l/d
• Black water =
180*30/100=54lpcd*50person=2700l/d

25. WATER DISCHARGE DATA
Area/
day
Mon.
l/d
Tue.
l/d
Wed.
l/d
Thu.
l/d
Fri.
l/d
Sat.
l/d
Sun.
l/d
Averag
e
%age
Bathroom&
Handbasin
3500 3500 3500 3500 3500 4000 4000 3600 60%
Cloths
washing
1500 1500 1500 1500 2000 2000 2000 1800 30%
Leakage 100 100 100 100 100 100 100 100 1.67%
Other uses 500 500 500 500 500 500 500 500 8.33%
Total 5800 5800 5800 5800 5800 6600 6600 6000 100%

26. The quality of grey water shows the different organic and inorganic compounds present in
Grey water.
It can be analyse with the help of different tests related to measurement of the quality of
Grey water that’s are:-
 pH test
 Residual chlorine test
 Chloride test
 Total hardness test
 Fluoride test
QUALITY OF GREY WATER

27. DIRECTIONS FOR USE
1 . To check pH of water sample ,use pH strips provided(range2.0 to 10.5).
2. Cut approximately2-3cm length of pH paper strip and dip in water sample to
be tested.
3 .Observe for the change in colour of pH strip.
4 .Match the colour obtained on the strips with the colour given on front of pH
paper strip.
5 .Note the corresponding pH strip.
6. Consider this as pH value for water tested.

28. Range:-2.0- 10.50
Result:

29. Residual chlorine test
Direction for use
 Fill the aqua check test jar with water sample up to the 10ml
mark.
 Add 4-5 drops of reagent RCL-A and shake well.
 Add two drops of reagent RCL-B Mix well.
 Observe change in colour of solution .
 solution turns blue: free chloride present
 No blue colour :chlorine is absent
 Add drop by drop reagent RCL-C counting the number of drops
while mixing ,until the blue colour disappears.

30. Calculation
mg/l(ppm)as chlorine=0.1*No of drops of reagent RCL-C
Range = .1 to3.0mg/l as chlorine.
Result

31. DIRECTION FOR USE
1.Fill the aqua check test jar with water sample up to the 10ml
mark.
2.Add one tiny spoonful of reagent CHL-A & 2 drops of reagent
CHL-B.
3.Mix well.
4.Add drop by drop reagent CHL-C counting the number of drops
while mixing ,until the colour changes to bluish violet.
CALCULATION
Mg/l(ppm)CL=10*(no of Drops of CHL-C)

32. RANGE:- 50-1000mg/l(ppm)
RESULT:-

33. TOTAL HARDNESS TEST
DIRECTION FOR USE
1.Fill the aqua check test jar with water sample up to the 10ml mark.
2.Add one spoonful of powder reagent TH-A with the tiny spoon provided.
3.Mix well to dissolve the power completely.
4.Add 4-5drops of reagent TH-B and mix well.
5.Observe change in colour of solution.
Solution turns blue: soft.
Solution turns red: hard.
Checking level of hardness
Add drop by drop reagent TH-C. counting the number of drops while mixing
,until the colour changes from red to blue Now apply the formula.

34. Calculation
mg/l(ppm) as Caco3 =25*(number of drops of TH-C).
Range:-25-600mg/l(ppm).
Result:-

35. FLUORIDE TEST
Directions for use
1.Fill the aqua check test jar with 10ml sample
2.Add 3drops of reagent FL-Am mix the contents well.
3.Now add 8 drop of reagent FL-B mix the contents and allow to stand for 2-5
minutes.
4.Match the correct colour and read the mg/l(ppm)fluoride from the colour
chart.
Calculation
fluoride=mg/l(ppm)value obtained by standard colour comparison.

36. Range:- 0.0-2.5mg/l(ppm).
Result:-

37. DESIGN OF DIFFERENT COMPONENT OF THE
GREY WATER TREATMENT PLANT
 Design of diversion system
1-Design of Piping-The piping conveying the greywater should be
diverted away from the pipe system carrying the black water
2-Design of junction chamber-The standard dimension of the
junction chamber is kept at about 0.3 m x 0.3 m x 0.5 m i.e. a
capacity of for a hostel having greywater generation of 2000-3000
l/day

38. DESIGN OF EQUALIZATION OR SETTLING TANK
• Equalization or settling tank is required to collect grey water for continuous flow to the filters for
treatment and facilitates in settling of course particles.
• Design Criteria for an Equalization Chamber
PARAMETER RANGE
Detention time (hrs) 1-2
Surface Loading (l/h/m ^ 2) 100-200
Depth of Tank (m) 0.8-1
Length to Width ratio 3:1 to 4:1 Group no- G1
Project name- Greywater treatment plant for BIT (hostel)
Group leader- Ashutosh Mishra

39. DESIGN OF FILTRATION AND TREATMENT
SYSTEM
• Filtration Units - The most suitable filtration unit should consist of coarse sand ,charcoal and fine sand.
• Screen-Screen can be a mesh with less than 10 mm size to remove coarse particle.
PARAMETER FILTER
Number of compartments 3
Media and size (mm)
Coarse sand
Coarse sand
Fine sand
Hydraulic loading (m3/m2-
hr)
0.1-0.2
Depth of media (m) 0.5
sand. This
will
Figure 4: Filtration
unit
Group no- G1
Project name- Greywater treatment plant for BIT(hostel)
Group leader- Ashutosh Mishra

40. DISINFECTION
• The best method of disinfecting the water is through chlorination.
Chlorination of the recycled water becomes necessary since it has a number
of benefits
• Kills pathogens in the water
• Removes odour of the recycled water
• It vaporizes in the water after disinfection
• Is readily available
• Cheaper compared to other forms of disinfection

41. DESIGN OF COLLECTION / STORAGE TANK
• A collection or storage tank is required to have the appropriate capacity to handle the average daily
generation of treated greywater.
• Material
• It durable and lasts longer than other materials
• It is a reliable material
• It has a high compressive strength
• It is cheaper than most materials
• It is isotropic and hence suitable for water retaining structures
• Is non-corrosive with chlorine
• the storage tank dimensions are 3.6 × 1 × 1

42. SECTION & PLANE OF STORAGE TANK
Group no- G1
Project name- Greywater treatment plant for BIT(hostel)
Group leader- Ashutosh Mishra

43. DESIGN OF PUMPING AND PIPING SYSTEM
• PUMP
• Efficient centrifugal pumps are ideal where water requirements are
substantial and only single-phase power, and sufficient power available.
• Pump characteristics
Property Values
Lift 22 m
Flow rate 5.0 m ^3/h
Voltage 240V ac

44. FIG. OF MOTOR DESIGN
Group no- G1
Project name- Greywater treatment plant for BIT(hostel)

45. OVERALL SCHEMATIC DIAGRAM OF A GREY WATER
RECYCLING SYSTEM
Group no- G1
Project name- Greywater treatment plant for BIT(hostel)
Group leader- Ashutosh Mishra

46. CONCLUSION
• To fulfil the increasing water demand of people
• Very economical and successful project.
• Continuously provide the water .
• There is no any Extra energy to be needed