scholarly journals PENINGKATAN KINERJA MEMBRAN ULTRAFILTRASI ALIRAN DEAD-END PADA PENYISIHAN BAHAN ORGANIK DALAM EFLUEN IPAL DOMESTIK DENGAN PRA-PERLAKUAN ADSORPSI

2020 ◽  
Vol 2 (2) ◽  
pp. 23-28
Author(s):  
Anisa Yuliani ◽  
Mahmud Mahmud ◽  
Chairul Abdi
Keyword(s):  
Activated Carbon ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Powdered Activated Carbon ◽  
Dead End ◽  
Modified Fouling Index

Salah satu kendala yang membatasi kinerja membran ultrafiltrasi (UF) yaitu fouling membran.   Keberadaan Bahan Organik (BO) merupakan salah satu penyebab utama terjadinya fouling membran pada air efluen IPAL Domestik.  Oleh karena itu, perlu dilakukan pra-perlakuan adsorpsi karbon aktif untuk mengurangii foulingi dani meningkatkani performai membrani UF. Penelitian ini bertujuan untuk mengetahui proses pengolahan air efluen dengan kondisi terbaik pada proses hibrid adsorpsi dan Ultrafiltrasi (UF) selulosa asetat (SA), serta menganalisis terbentuknya fouling membran pada proses hibrid adsorpsi dan UF-SA.  Karbon aktif yang digunakan pada rencana penelitian ini adalah Powdered Activated Carbon (PAC) dengan interval variasi dosis 25 mg/L pada rentang 25 mg/L-200mg/L serta pH 4.  Metode yang digunakan pada proses pra-perlakuan adsorpsi menggunakan sistem batch dengan pengadukan adsorpsi 180 rpm selama 240 menit.   Kemudian, dialirkan pada membran UF-SA menggunakan sistem aliran dead-end dengan variasi tekanan operasi 1-3 bar dengan interval 0,5 bar pada pH 4 selama 120 menit.   Selanjutnya dicari kondisi terbaik proses hibrid adsorpsi dan UF-SA dengan cara mengatur dosis optimum (dinaikkan maupun diturunkan), sehingga didapatkan tiga variasi dosis.   Analisis kandungan BO dilakukan melalui pengukuran parameter Dissolved Organic Carbon (DOC), UV254, E4/E6  , dan UV456 menggunakan TOC Analyzer dan Spektrofotometer UV serta karakterisasi membran dengan permeabilitas.   Hipotesis dari penelitian ini adalah pra-perlakuani adsorpsii karboni aktifi berpengaruh untuki mereduksii foulingi pada membrani UF-SA, dan model Modified Fouling Index (MFI) dapat menggambarkan pembentukan fouling pada proses hibrid adsorpsi dan UF-SA pada penyisihan air efluen.

Effect of operational modes on the removal of a synthetic organic chemical by powdered activated carbon during ultrafiltration

2001 ◽  
Vol 1 (5-6) ◽  
pp. 39-47
Author(s):  
Y. Matsui ◽  
A. Yuasa ◽  
F. Colas
Keyword(s):  
Activated Carbon ◽  
Cross Flow ◽  
Powdered Activated Carbon ◽  
Organic Chemical ◽  
Filtration Cycle ◽  
Dead End ◽  
Synthetic Organic Chemical ◽  
The Cross ◽  
Short Time ◽  
Operational Modes

The effects of operational modes on the removal of a synthetic organic chemical (SOC) in natural water by powdered activated carbon (PAC) during ultrafiltration (UF) were studied, through model simulations and experiments. The removal percentage of the trace SOC was independent of its influent concentration for a given PAC dose. The minimum PAC dosage required to achieve a desired effluent concentration could quickly be optimized from the C/C0 plot as a function of the PAC dosage. The cross-flow operation was not advantageous over the dead-end regarding the SOC removal. Added PAC was re-circulated as a suspension in the UF loop for only a short time even under the cross-flow velocity of gt; 1.0 m/s. The cross-flow condition did not contribute much to the suspending of PAC. The pulse PAC addition at the beginning of a filtration cycle resulted in somewhat better SOC removal than the continuous PAC addition. The increased NOM loading on PAC which was dosed in a pulse and stayed longer in the UF loop could possibly further decrease the adsorption rate.

Dissolved Organic Carbon Removal from a Prairie Water Supply Using Ozonation and Biological Activated Carbon

1999 ◽  
Vol 34 (4) ◽  
pp. 615-632 ◽  
Author(s):  
Joanne Sketchell ◽  
Hans G. Peterson ◽  
Nick Christofi
Keyword(s):  
Activated Carbon ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Source ◽  
Drinking Water Source ◽  
Biological Activated Carbon ◽  
Chlorine Demand ◽  
Biodegradable Dissolved Organic Carbon ◽  
Carbon Filtration ◽  
By Products

Abstract Large quantities of dissolved organic carbon in prairie surface water reservoirs make sustainable treatment quite challenging. Organic material is a precursor for the formation of disinfection by-products. Here, ozonation and biological activated carbon filtration were used as methods for removing dissolved organic carbon from the water of a small prairie reservoir used as a drinking water source. Biofiltration alone yielded significant reductions in dissolved organic carbon, colour, total trihalomethanes and chlorine demand. When ozonation preceded biofiltration, the increased proportion of biodegradable dissolved organic carbon allowed for significantly greater (p<0.05

Biological Treatment of a High Salinity Chemical Industrial Wastewater

1993 ◽  
Vol 27 (7-8) ◽  
pp. 105-112 ◽  
Author(s):  
Shimshon Belkin ◽  
Asher Brenner ◽  
Aharon Abeliovich
Keyword(s):  
Activated Carbon ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Salt Concentration ◽  
Industrial Wastewater ◽  
Biological Treatment ◽  
High Salinity ◽  
Laboratory Bench ◽  
Wastewater Stream ◽  
Scale Reactor

Various laboratory-scale process configurations were tested for the biological treatment of a combined wastewater stream of several chemical factories. The untreated wastewaters, rich in halogenated organics (1250±389 mg/l DOC), were also highly saline (32±11 g/liter TDS 550°C) and toxic (Microtox™ EC50 = 1.5±2.0%). Biphasic (anaerobic/aerobic) laboratory bench-scale reactor systems yielded reduction of dissolved organic carbon by 70 to 84%, in the absence and presence of powdered activated carbon, respectively. The anaerobic phase proved to be essential in all systems, both for dissolved organic carbon removal and for detoxification. Similar efficiencies were obtained in either activated sludge or aerated lagoon type reactors, but in the latter case, longer hydraulic retention times were required. DOC removal was found to decrease with increased salt concentration; however, a 50% efficiency was achieved even at 90 g/l TDS. Toxicity elimination as judged by the Microtox™ assay was highly variable in the absence of activated carbon but stable and efficient in its presence.

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