(Penyingkiran
Nutrien Air Basuhan dari Pasar Basah Mengguna Reaktor Kelompok Urutan)
Omar Danial1, Mohd Razman Salim1,2,
Salmiati1,2*
1Department of Environmental Engineering, Faculty of
Civil Engineering
2 Center of Environmental Sustainabiliy and Water
Security (IPASA), Research Institute for Sustainable Environment (RISE)
Universiti
Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
*Corresponding author: salmiati@utm.my
Received: 9
December 2014; Accepted: 16 October 2015
Abstract
Fresh
water scarcity has become an important issue in this world today. Water reuse
is known as one of the strategies to overcome this problem. Grey water is one
of the sources of reused water. Several researches were carried out on water
reuse, but limited attention was focused on reusing grey water from wet market,
which contains high nutrient and organic matters. This study was carried out on
nutrient removal from grey water using sequencing batch reactor (SBR). The grey
water sample was taken from a wet market (Pasar Peladang, Skudai). About 1L of
grey water was fed into the reactor with a total volume of 4L. Anoxic-aerobic
phase were divided with a ratio of 30%-70% of total time respectively. Mixing
was maintained at 30 rpm during the start of each cycle until settling phase to
achieve uniform condition. Influent and effluent were set for 30 minutes. The
SBR was operated with 3 cycles/day, temperature 30°C, cycle time 8 hours and
hydraulic retention time (HRT) 1.2 days. Aeration at 35 L/min was induced for
ammonia conversion and assisting nitrification.. The results show that the bacteria growing in
alternating anoxic/aerobic systems could remove organic substrates and
nutrient. The COD, Total Nitrogen and Total Phosphorus removal efficiencies
were maximum at the levels of 94%, 88% and 70% respectively.
Anaerobic-Aerobic-Anoxic phase was proposed to increase the removal percentage.
Keywords: SBR system,
nutrient removal, grey water, hydraulic retention time, chemical oxygen demand
Abstrak
Kekurangan
bekalan air bersih menjadi isu penting di dunia pada masa kini. Penggunaan
semula air sisa yang telah diolah dikenali sebagai salah satu langkah strategik
untuk mengatasi masalah ini. Penggunaan semula air basuhan telah menjadi salah
satu sumber yang penting sebagai air sisa kitar semula. Beberapa kajian tentang
perkara ini telah dijalankan, tetapi fokus yang berkaitan penggunaan semula air
basuhan dari pasar basah, yang mengandungi nutrien dan permintaan oksigen kimia
(COD) yang tinggi, agak terbatas. Kajian ini mengenai penyingkiran nutrien di
dalam air basuhan dari pasar basah menggunakan reaktor kelompok urutan (SBR).
Sampel air basuhan diambil dari pasar basah (Pasar Peladang, Skudai).Sebanyak 1L
air basuhan telah dimasukkan ke dalam reaktor dengan jumlah isipadu total 4L.
Nisbah tahap anoksik-aerobik ditentukan 30% -70% daripada jumlah masa total. 30
rpm pengaduk pencampuran dikekalkan pada awal setiap kitaran untuk mencapai
tahap keadaan seragam. Influen dan efluen ditetapkan selama 30 minit. SBR telah
dikendalikan dengan 3 kitaran / hari, suhu 30 ° C, masa kitaran 8 jam dan masa
tahanan hidraulik (HRT) 1.2 hari. Pengudaraan pada 35 L/min telah dipasang
untuk penukaran ammonia dan membantu nitrifikasi. Hasil kajian menunjukkan
bahawa bakteria yang membiak dalam sistem anoksik / aerobik boleh menyingkir
substrat organik dan nutrien. Tahap kecekapan maksimum penyingkiran COD,
Nitrogen Jumlah dan Fosforus masing-masing adalah pada kadar 94%, 88% dan 70%.
Fasa anaerobik-aerobik-Anoxic dicadangkan untuk meningkatkan peratusan
penyingkiran.
Kata kunci: Sistem SBR,
penyingkiran nutrien, air basuhan, masa tahanan hidraulik, permintaan oksigen
kimia
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