Sains Malaysiana 43(10)(2014): 1485–1490

Efficiency of Aerobic Granulation Technology in

Treating High Strength Soy Sauce Wastewater

(Kecekapan Teknologi Enapcemar Granul Aerobik dalam Merawat Air Sisa Kicap)

HASNIDA HARUN¹, AZNAH NOR-ANUAR^1,2*, ZAINI UJANG^1,2, INAWATI OTHMAN¹ &

NOR HASYIMAH ROSMAN¹

¹Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

²Institute of Environment and Water Resource Management, WATER Research Alliance

Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

Received: 5 December 2013/Accepted: 9 February 2014

ABSTRACT

The present study investigated the efficiency of aerobic granular sludge (AGS) technology in treating effluent from soy sauce industry which is categorized as a high strength wastewater. The combination of anaerobic and aerobic granulation technology in SBR system was used in this study which was efficiently treated COD from the soy sauce wastewater where 87% of removal was achieved. Ammonia and colour was removed at a maximum of 87 and 76%, respectively, in the SBR system. Matured, dense and compact granules with 2.5 mm in diameters were developed with a good settling velocity (45 m/h) and 28 mL/gSS of sludge volume index (SVI). Hence, AGS technology was proven as an excellent treatment for soy sauce wastewater for being discharge into the environment, as the effluent was treated in one biological reactor with high hydraulic and organic loadings besides less production of sludge. In this study, the capabilities of AGS technology in treating relatively higher concentration of organic impurities present in the soy sauce wastewater were demonstrated.

Keywords: Aerobic granular sludge; aerobic processes; nitrification; soy sauce wastewater; SBR

ABSTRAK

Penyelidikan ini mengkaji kecekapan enapcemar teknologi granul aerobik (AGS) dalam merawat efluen daripada industri kicap yang dikategorikan sebagai air sisa yang berkuatan tinggi. Gabungan teknologi granul anaerobik dan aerobik di dalam sistem SBR telah digunakan dalam kajian ini dengan COD daripada air sisa kicap telah dirawat dengan cekap dengan 87% penyingkiran telah dicapai. Ammonia dan warna telah dirawat dengan peratusan penyingkiran yang maksimum masing-masing adalah 87 dan 76% dalam sistem SBR ini. Granul yang matang, padat dan mampat telah terbentuk serta mempunyai 2.5 mm diameter dan halaju enapan yang baik (45 m/h) dengan 28 mL/gSS indeks isi padu enapcemar (SVI). Oleh itu, teknologi AGS telah dibuktikan sebagai satu teknologi rawatan yang sangat bagus bagi air sisa kicap untuk dilepaskan ke alam sekitar, tambahan pula efluen air sisa kicap tersebut telah dirawat di dalam reaktor biologi yang berupaya menanggung beban hidraulik dan organik yang tinggi di samping mengurangkan pengeluaran enapcemar. Dalam kajian ini, keupayaan teknologi AGS dalam merawat kepekatan bendasing organik yang tinggi yang terdapat dalam air sisa kicap ini telah ditunjukkan.

Kata kunci: Air sisa kicap; enapcemar granul aerobik; nitrifikasi; proses aerobik; SBR

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*Corresponding author; email: aznah@utm.my