[1]Waste Management And Sanitation, Solid Waste Management (SIWES)

SIWES was established in the year 1973. Participation in  has become a necessary pre-condition for the award of Degree certificates in specific discipline. Student industrial work experience scheme is a program designed by the university to expose students to the practical aspect of his/her course of study.

It involves the attachment of a student to an organization in respect of his/her course of study that can provide the training and experience required in the industry as these experience and training cannot be obtained in the lecture room but theoretical knowledge taught in the lecture rooms shall be applied by the student in real industrial situation.

AIM:  To know the amount of sedimented sludge in a sample.
MATERIALS: Imhorff  cone, timer.
PROCEDURE: Shake sample very well, invert and pour into the 1000ml of the Imhorff cone.
Set the timer for 30 mins and take your result after 30 mins.

AIM: To check the clarity of an effluent sample.
APPARATUS: Turbidity meter, distilled water, effluent sample,
PROCEDURE: Collect sample from the effluent after the UV
2. Put on the meter
3. Bring out the container inside and rinse  with distilled water and rinse again with sample.
4. Measure sample to the mark on the container
5. Insert container back to the meter and read your result.

Dissolved oxygen test (Titrimetric Method)

Aim: To know the amount of dissolved oxygen in a sample.

Sample – grab (300 and 400 basin)

Waste Management And Sanitation, Solid Waste Management (SIWES)


Collect sample
Pour into a glass bottle and allow the rubber in the bottle to float
Add 5 drops to O¬2 1 (magnesium) and shake.
Add 5 drops of O2 2 (sodium hydroxide) and shake, a gel like substance will appear.
Add 10 drops of O3 (Sulphuric acid)
Allow particles to dissolve, after dissolving allow to stand for 1minutes.
Pipette 5ml of prepared solution into a beaker and add 1-2drops of O2 4 – starch. Colour change (yellow-black)
Titrate against O2 5 (sodium disulphate) until colour change from black to  colourless . W.H.O standard 7- 10.


AIM: To know the amount of solid suspended in a sample.

SAMPLE: Grab [influent or R.A.S].

MATERIALS: Beakers, distilled water, magnetic stirrer, stirrer, filter paper, oven, furnace, suction pump.

Waste Management And Sanitation, Solid Waste Management (SIWES)


1. Pretreat filter paper.
2. After pretreating, pick filter paper with the thong and take to the furnace and heat at 5500c for 15mins
3. Put in the desiccator to cool.
4. Set filtration unit, weigh your filter paper as your -----B
5. Measure 200ml of your sample into a beaker and stir with a stirrer in the sample.
6. After stirring, pour into the filtration unit.
7. Take to the oven and heat at 105oc for 2hrs.
8. After two hours cool in a dessicator, weigh after dessicating and record as your-----A.
9. Take to the furnace again and heat at 550oc for 15mins,cool in a dessicator and weigh as your ---C[used in calculating for VSS—Volatile suspended solid]
Calculation=A-B/Sample volume×1000/1[For TSS]
A-C/Sample volume ×1000/1[VSS]


300    400    Influent    Effluent    R.A.S    W.H.O standard
PH    7.326    7.344    7.504    7,129    6.970    6.5-8.5
CONDUCTIVITY    234    232    230    216    229
TEMPERATURE    26.0    26.1    26.0    25.3    24.2    25-400c
TURBIDITY                8.81        10 NTU
A    328.4    331.5            338.3
B    324.1    326.9            330.2
C S/VOL    200    200            200
SSV    4.0    3.7            6.7
TSS    21.5    23            40.5    30mg/l

Waste Management And Sanitation, Solid Waste Management (SIWES)

AIM: To know the amount of suspended and dissolved solid in a sample.
MATERIALS: Evaporating dish, macro pipette, distilled water, sample, oven, water bath etc.

1. Pretreat evaporating dish by rinsing with distilled water, take to the oven and heat at 105oc for 1hr.
2. Cool in a dessicator and weigh the evaporating dish as     your……….C
3. Pipette 50ml of your sample using the micro pipette and  Weigh as ----A, take to the water bath and allow to dry.
4. AFTER heating weigh as -----B
Formula=B-C/Sample volume×1000/1
A    113166    98004
B    62121    47921
C    61053    46496
Sludge volume     50    50
% total solid
Total solid     21360

Waste Management And Sanitation, Solid Waste Management (SIWES)

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