Water Suspended Solids

HYDROLOGY LABORATORY ECW351 OPEN-ENDED LAB SEPT 2017 – JAN 2018 TITLE OF EXPERIMENT

: Suspended Solids (SS)

DATE OF EXPERIMENT

: 3/10/2017

GROUP

: EC1105A

GROUP MEMBERS

1.Muhammad Zafran Bin Mohd Zahar (2015876408) 2.Puteri Nazatul Fasha binti Rosmadi (2015868616) 3.Amir As-Siddiq bin Mohamad Zaki (2015814672) 4.Zulhaziq Khan bin Zuljar (2015808074)

LECTURER

: DR DURATUL AIN THOLIBON

LEVEL OF OPENESS

:

3

MARKS

COMMENTS

INTRODUCTION

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OBJECTIVE(S)

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METHODOLOGY

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RESULTS

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DISCUSSION

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CONCLUSION

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ORGANIZATION

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TOTAL MARKS

1.1 Introduction The need for an open-ended laboratory activity is emphasized in enhancing independent learning activities and inculcating creativity and innovation of students. This open-ended laboratory activities is created to provide a platform for students (as a group) to determine the objectives and scopes of the laboratory assignment, identify the necessary apparatus and prepare step by step methodology to carry out the task to address the given problem. The group will be required to analyse all the technical data obtained and present them in a technical format.

1.2 Objective The objective of this activity is: To determine total suspended solids in the given water samples.

2.0 Problem Statement Each group is required to determine suspended solids from either (i) Tap water (ii) River/ pond water or (iii) Raw sewage and check whether the permissible limit is exceeded.

3.1 Apparatus 1. Evaporating dish 2. Analytical balance 3. Drying oven 4. Measuring cylinder 5. Vaccum pump 6. Filter membrane 7. Filter paper 8. Forceps 9. Crucible 10. Wash bottle

3.2 Procedures

1. The sample was draw through filter. 2. Filteration apparatus placed with weighed filter as 𝑊1 in filter flask. 3. Sample mixed well and was poured onto graduated cylinder. 4. Suction was applied to filter flask and seat filter amount of distilled water. 5. The filter paper was placed on thw filter membrane. 6. Th water samples was poured with selected volume into filteration apparatus. 7. The vaccum pump was on until the water sample settled down. 8. The filter paper was placed to crucible 9. The filter paper was dried in oven for 20 minuters 10. The filter paper was weighed as 𝑊2

3.3 Data Acquisition

Descriptions

Unit

Samples of waste water Pond water

River water

Weight of the clean filter paper

g

𝑊1

0.11

0.12

Weight of the filter paper and residue

g

𝑊2

0.13

0.13

Weight of the residue

g

W

0.02

0.01

Volume of the samples

mL

V

50

50

Total Suspended Solid

mg/L

TSS

400

200

Table 1: Total Suspended Solid

Calculation: 

Weight of the residue, W = 𝑊2 - 𝑊1 Pond water: W = 0.13 g – 0.11 g = 0.02 g

River water: W = 0.13 g – 0.12 g = 0.01 g 

Total suspended solid, TSS =

𝑊 𝑉

Pond water: 1 𝑚𝑔

W = 0.02 g × ( 1 × 10−3 )𝑔 = 20 mg

20 𝑚𝑔

TSS = 50 𝑚𝐿 = 0.4 mg/mL 𝑚𝑔

1 𝑚𝐿

TSS = 0.4 𝑚𝐿 × ( 1 × 10−3 )𝐿 = 400 mg/L

River water: 1 𝑚𝑔

W = 0.01 g × ( 1 × 10−3 )𝑔 = 10 mg 10 𝑚𝑔

TSS = 50 𝑚𝐿 = 0.2 mg/mL 𝑚𝑔

1 𝑚𝐿

TSS = 0.2 𝑚𝐿 × ( 1 × 10−3 )𝐿 = 200 mg/L

4.3 Appendix

Figure 1: The filter papers was labels

Figure 2 : The water samples

Figure 3: The filter samples was placed on filtration apparatus

Figure 4: Water samples was poured into filtration apparatus

Figure 5: Filter paper after the filtration process