Removals of colour and turbidity from stabilized leachate by using alum and glutinous rice flour dual coagulants

Shaylinda Mohd Zin Nur,Azizan Mohd Omar,J.-W Park,H Ay Lie,H Hardjasaputra,P Thayaalan

doi:10.1051/matecconf/201713808003

Shaylinda Mohd Zin Nur, Azizan Mohd Omar + Show 4 more

Open Access

https://doi.org/10.1051/matecconf/201713808003

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Abstract

The effects of alum and glutinous rice flour as dual coagulant on the removals of colour and suspended solid from stabilized leachate were investigated. A series of jar test were conducted by optimizing the dose and pH of single coagulant (alum and glutinous rice flour) and its combination. It was observed that low removals (colour: 46%, suspended solid: 16%) were recorded by glutinous rice as single coagulant at pH 7 and dose 1.2 g/L. However, addition of glutinous rice flour (0.12 g/L) as coagulant aid for alum at pH 6 and dose of alum 2.5g/L, show better removals of colour (86%) and suspended solid (92%) from alum. At same pH and dose of alum as single coagulant, the removals achieved only 79% and 83% of colour and suspended solid, respectively. Thus, addition of glutinous rice flour as coagulant aid improved the colour and suspended solid removals from the stabilized leachate

Highlights

Due to increment of population expansion and economic development it will contribute to solid waste generation
Combination of Alum and glutinous rice (GR) as dual coagulant efficiency are shown in Figure 1 (c)
The effectiveness of dual coagulant made from alum and GR on stabilized SRL leachates was determined

Summary

Introduction

Due to increment of population expansion and economic development it will contribute to solid waste generation. Even though the uses of chemical coagulant show the good performance and efficiency, some of them causes environmental effect and promote secondary pollution [4] To reduce this problem various study on the efficiency of dual coagulant which consist of chemical coagulant and natural coagulant were carried out. The use of dual coagulant consist of chemical and natural coagulant is utilized to enhance the productivity of flocs, and removal colour and turbidity from leachate. The application of alum produced after used issues such as high volume sludge production and high aluminium content in treated waste water. This study investigates the effectiveness of dual coagulant consist of alum and glutinous rice flour for the treatment of stabilized leachate by evaluating the colour and turbidity removal

Methodology

Results and discussion

Conclusion