characterization of dairy industry wastewater

8/13/2019 Characterization of Dairy Industry Wastewater

1/20


2/20

Characterization Analysis of Dairy I

Wastewater

Presented To:

Maam Misbah Afaq

Presented By:Usman and Ambers Group.

Date of Presentation:

8 Feb, 2014


3/20

A dairy is a commercial establishment for processing omilk and milk products.


4/20

Cream and butter

Skimmed milkCasein- A milk protein used in making e.g. plastics anand used as a nutrient.

Cheese

Whey

Yogurt

Milk powders


5/20

Dairy Products


6/20

INPUTS

MANUFACTURING

PROCESSES

OUTPUTS

Raw Materials Finished Products

Water Wastewater

Energy Air Emissions

Packing Materials By-Product/Wastes


7/20

Schematic flow sheet

of the main

dairy products.


8/20


9/20

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


10/20

Characterization of Dairy Industry Wa


11/20

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.


12/20

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.


13/20

Analysis of Wastewater


14/20

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


15/20

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.


16/20

Cleaner ProductionWastewater Treatment.


17/20

Treatment Plant


18/20


19/20

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


20/20

characterization of dairy industry wastewater

Documents