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Characterization Analysis of Dairy I
Wastewater
Presented To:
Maam Misbah Afaq
Presented By:Usman and Ambers Group.
Date of Presentation:
8 Feb, 2014
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A dairy is a commercial establishment for processing omilk and milk products.
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Cream and butter
Skimmed milkCasein- A milk protein used in making e.g. plastics anand used as a nutrient.
Cheese
Whey
Yogurt
Milk powders
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Dairy Products
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INPUTS
MANUFACTURING
PROCESSES
OUTPUTS
Raw Materials Finished Products
Water Wastewater
Energy Air Emissions
Packing Materials By-Product/Wastes
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Schematic flow sheet
of the main
dairy products.
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BOD in wastewater is contributed by cream, butter,
and whey products.The alkalinity in the effluent is attributed to the presthe caustic soda, detergents etc.
TSS & TDS in the effluent is contributed from differe
detergents used in vehicle washing, presence of fat and salts.
The fats from production unit give rise to Oil & Grea
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Characterization of Dairy Industry Wa
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Sr. No Parameter Typical Ranges of
Concentration
NEQs
1 BOD 150-1400 80
2 COD 500-4000 150
3 Sulphate 300-1200 660
4 pH 7-10 6-9
5 TSS 200-3000 200
6 TDS 800-5000 3500
7 Chlorides 100-1700 10008 TKN 15-180 -
9 Phosphorous 11-160 1000
10 Sodium 60-807 -
11 Calcium 57-112 -
12 Potassium 11-160 -
13 Magnesium 25-49 -
Note: All parameters are in terms of mg/L except pH.
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Sr. No Parameter Mean NEQ1 BOD 1150 80
2 COD 2400 150
3 Sulphate 75 660
4 pH 10 6-9
5 TSS 300 200
6 TDS 1500 3500
7 Chlorides 77 1000
8 TKN 97.5 -
9 Phosphorous 65 1000
10 Oil & Grease Trace 10
11 Temperature (oC) 31 40oC
Note: All parameters are in terms of mg/L except pH.
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Analysis of Wastewater
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BOD COD SULPHATE TSS TDS Phosphorous Chlorides pH TKN sodium
Nestle's values 1150 2400 75 300 1500 65 77 10 97.5 433
NEQ'S 80 150 660 200 3500 1000 1000 9
0
500
1000
1500
2000
2500
3000
3500
4000
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BOD:N:P =100:8.47:5.65, enough nutrients are present so bioltreatment is feasible.
pH is in Alkaline range, so neutralization is to be carried out, pBiological treatment. (should lie between 6.5 to8.5). Equalizatalso be employed.
For the removal of Oil and Grease Dissolved Air Floatation (Dare employed which otherwise may cause operational problem
Temperature is within the range.
TSS should also be removed (in Primary Clarifier) as they mayoperational problems in further processes.
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Cleaner ProductionWastewater Treatment.
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Treatment Plant
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Ahmad. F. (2007), Biological Treatment of Wastewat
Product Industry. M.Sc. Thesis, IEER, University ofEngineering & Technology, Lahore, Pakistan.
http://www.ecologixsystems.com/industry-dairy.php
http://www.fao.org/wairdocs/lead/x6114e/x6114e06.ht
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