Fyp Presentation 18 May

Optimization Of Coagulation Process To Treat Rubber Industry Effluent

Using Natural Coagulant (Kalanchoe Pinnata)

Presentation Outline

Problem statement and objective

Introduction

Methodology

Result and discussion

Conclusion

Problem statement

Objective

To study the performances of natural coagulant in term of turbidity removal and cod reduction

To determine the capability of the Setawar leaves as natural coagulant in treating rubber effluent.

To obtain optimum condition in term of dosage and pH of natural coagulant in treating rubber effluent

Introduction

Coagulation

Treatment Methods BOD COD TOC Turbid Colour Coli NH3-N

Primary treatment x x x x O o

Activated Sludge + + + + x + +

Nitrification + + + + x + +

De-nitrification o o o o x

Tricking filter + + x x O o

Coagulation-Flocculation + + + + + + o

Filtration A/S x x x x x x

GAC adsorption + x + + + + x

Ion exchange x x o o +

Chlorination + +

Ozone o + x +

Symbols: o = 25% removal of influent concentration, x = 25-50%, + = > 50%. Blank denoted no data

Table 1: Comparison of waste water treatment method that commonly used. (Metcalf & Eddy, 1991)

Coagulation basically is a process used to destabilize the particle found in waters so that they may be removed by subsequent separation process

Kalanchoe Pinnata

Use as natural coagulant in this rersearch

Why kalanchoe pinnata choosen

Easy to grow

Low cost

Environmental friendly

New plant in the natural coagulant field

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Kalanchoe Pinnata leaves

Rubber wastewater

One of the hazardous waste water

Has high COD , turbidity and pose threat when release to the environment

Table.1.1 Typical characteristic of wastewater from rubber processing(source India central pollution control board, 2001)

Response Surface Method

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Design of experiment are done using fix parameter.

Analysis of RSM are done when data are collected

Optimization analyze from the data collected

Methodology

Design of experiment

Collection and Preservation of Samples

Preparation of Coagulants

Experimental Procedure Coagulation studies at different conditions

Sample Analysis Turbidity Test

COD Test

Suspended Solid Test

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Rubber Wastewater treatment using

Kalanchoe Pinnata

Part Two

Part OnePart

Three

Collecting wastewater and

preparation of natural

coagulant

Wastewater collected

and preserve at 4C

Natural coagulant

are dried using

sun

Dries leaves are

grind ,sieved and

stored in a

vacumm container

Design of experiment

using Design Expert

Parameter , dosage pH

are determined

Design of experiment

are done using fix

parameter

Preparation of natural

coagulant solution ,pH

modifier and flocculant

aid

JAR test : fast

mixing 120rpm,

slow mix 40rpm

Analysis of supernatant

from treated wastewater

Turbidity testCOD test

Suspended solid test

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JAR test machine

Result and discussion

Trend

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Optimization (RSM)

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Discussion

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several factors that can affect the natural coagulant ability to coagulatealkalinitytemperature time Dosage of natural coagulant

four primary mechanism of coagulant which is enmeshment, adsorption, charge neutralization/destabilization and complexation/precipitation.

(Pernitsky, 2003)

coagulation will happen via Van der Waals force, which refers to the tendency of particle in nature to attract each other weakly if they did not

have charge

Na OH

Waste water

OH

Na OH

Waste water

OH

Unknown compound

/

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Conclusion and Recommendation

Conclusion

Kalanchoe Pinnata can work as a natural coagulant

It best work at alkali condition

High amount dosage of natural coagulant , higher removal efficiency

Recommendation

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Used wider range for natural coagulant dosage

Use higher concentration of natural coagulant

Conduct a study on harvesting time for Kalanchoe Pinnata