Use of down-flow hanging sponge (DHS) reactor as a promising post-treatment system for municipal wastewater

A research on the performance of down-flow hanging sponge (DHS) reactor treating domestic wastewater

“…In the level 3 of organic loading rate the BOD removal efficiency was decreased but still maintained stable condition until the end of the experiment. Higher removal efficiencies were achieved in this research than those reported in previous studies by Mahmoud et al [5] as 67 ± 9 % and Tandukar et al [4]. + -N was stable throughout the experimental period (Fig.…”

“…Araki and colleagues used a system of UASB followed by a DHS model to treat municipal sewage, their system could achieve 94% of COD removal in with the removal of DHS model was 71 % [13]. In another study, Mahmoud et al operated a DHS system to treat UASB effluent at OLR of 3.2 kg COD m -3 day -1 , this experiment showed that the removal of carbonaceous organic matter in terms of COD was 61 ± 12 % [5]. A research of modelling and profile analysis of a down-flow hanging sponge system treating agricultural drainage water at OLR as 3 kg COD m -3 day -1 , the result of model showed average removal efficiencies of COD was as of 83.7 % [11].…”

“…One of the most biofilm systems commonly used in wastewater treatment is the Down-flow Hanging Sponge (DHS) reactor. DHS reactors offer several advantages compared to other systems such as high organic loading rate, high removal efficiency, high biomass concentration, long sludge residence time (SRT), and short HRT [3][4][5]. There have been many authors investigated about DHS reactor in treating different types of wastewater.…”

“…There have been many authors investigated about DHS reactor in treating different types of wastewater. Mahmoud and colleagues [5] used a hybrid up-flow anaerobic sludge blanket (HUASB) reactor followed by a down-flow hanging sponge reactor to treat municipal wastewater. The result showed that this system could achieve the removal values of COD total , COD soluble , BOD 5total , TSS and TN of 90 ± 4, 78 ± 8, 95 ± 2, 96 ± 5 and 72 ± 8 %, respectively.…”

Unjuk Kerja Down-Flow Hanging Sponge (DHS) Bioreaktor sebagai Secondary Treatment untuk Pengolahan Limbah Domestik

“…Penelitian bioreaktor DHS awalnya diterbitkan pada tahun 1997 oleh (Machdar et al, 1997) dan telah dieksplorasi terus menerus setiap waktu oleh banyak peneliti (Araki et al, 1999;Machdar et al, 2000;Machdar and Faisall, 2011;Tandukar et al, 2007Tandukar et al, , 2006Tandukar et al, , 2005 untuk pengolahan limbah domestik. Reaktor DHS dapat direkomendasikan sebagai teknologi yang efisien dan hemat biaya untuk pasca pengolahan air limbah kota, terutama untuk negara-negara berkembang seperti penelitian yang telah dilakukan di Mesir (Mahmoud et al, 2011) Sistem reaktor DHS memiliki performa tinggi dalam memproses lumpur aktif yang dicapai dengan stratifikasi mikroba yang berguna untuk mengurangi senyawa organik dan mengoksidasi amonia dan nitrit di dalam reaktor DHS (Kubota et al, 2013). Sealin itu penelitian yang pernah dilakukan skala pilot plant dengan laju alir 50 m 3 /hari menunjukkan kebutuhan energi yang dibutuhkan dan produksi lumpur pada pilot plant tersebut lebih rendah dari pada activity sludge (Tanaka et al, 2012).…”