scholarly journals Experimental Study on Filtration Performance of Flat Sheet Multiple-Layer Depth Filter Media for Intake Air Filtration

2013 ◽  
Vol 47 (12) ◽  
pp. 1334-1341 ◽  
Author(s):  
N. Hasolli ◽  
Y. O. Park ◽  
Y. W. Rhee
Keyword(s):  
Experimental Study ◽  
Air Filtration ◽  
Filter Media ◽  
Layer Depth ◽  
Filtration Performance ◽  
Flat Sheet ◽  
Multiple Layer

scholarly journals Efektifitas Biofiltrasi Dengan Media Arang Tempurung Kelapa Dan Batu Apung Terhadap Penurunan Kadar COD, Nitrat Dan Amoniak Dalam Air Limbah Domestik

2020 ◽  
Vol 5 (1) ◽  
pp. 27-35
Author(s):  
Fivi Elvira Sirajuddin ◽  
Muhammad Fadly Saleh
Keyword(s):  
Experimental Study ◽  
Wastewater Treatment ◽  
Residence Time ◽  
Nitrate Removal ◽  
Domestic Wastewater ◽  
Ammonia Removal ◽  
Sampling Time ◽  
Media Composition ◽  
Filter Media ◽  
Domestic Wastewater Treatment

This experimental study aims to determine the most optimal biofiltration media composition for domestic wastewater treatment using 4 upflow biofilter reactors with a combining pumice and coconut shell charcoal as an media filter. ,The combination ratio of media filter is UAF 1 = 1: 0, UAF 2 = 2: 1, UAF 3 = 1: 2, and UAF 4 = 1 : 1 with an overall filter media thickness of 60 cm. Sampling time is done every 2 days for 16 day were taken at the four experimental reactors to be tested for each parameter of pH, COD, nitrate and ammonia. The method of analysis carried out after obtaining data from testing in the laboratory, that is descriptively related to variations in filter media, and the residence time of wastewater in the reactor. The results showed that the reactor with the best processing in normalizing pH was UAF 1. While the best filter media composition in COD and nitrate removal was UAF 3 reactor with 77.78% and 87.17% removal results. Ammonia removal occurred throughout the experimental reactor with a result <-0.05 mg / l was considered quite good and indicated the decomposition process was successful. Penelitian ini dilakukan untuk menentukan komposisi media biofiltrasi yang paling optimal untuk pengolahan air limbah domestik dengan menggunakan 4 reaktor upflow biofilter dengan mengkombinasikan batu apung dan arang tempurung kelapa sebagai media filter. Rasio dari kombinasi media filter tersebut adalah UAF 1 = 1:0, UAF 2 = 2:1, UAF 3=1:2, dan UAF 4=1:1 dengan ketebalan media filter secara keseluruhan 60 cm. Waktu pengambilan sampel dilakukan setiap 2 hari selama 16 hari. Pengambilan sampel dilakukan pada keempat reaktor percobaan untuk diujikan masing-masing parameter pH, COD, nitrat dan amoniak. Metode analisa yang dilakukan setelah mendapatkan data dari pengujian di laboratorium, yaitu secara deskriptif terkait dengan variasi media filter, dan waktu tinggal air limbah dalam reaktor. Hasil penelitian menunjukkan reaktor yang paling baik pengolahannya dalam menormalkan pH adalah UAF 1. Sementara komposisi media filter yang paling baik dalam penyisihan COD dan nitrat adalah reaktor UAF 3 dengan hasil penyisihan sebesar 77,78% dam 87,17%. Penyisihan amoniak terjadi di seluruh reaktor percobaan dengan hasil <-0,05 mg/l dinilai cukup baik dan mengindikasikan proses penguraian polutan berjalan dengan baik.

scholarly journals Fiberglass Vs. Synthetic Air Filtration Media

2002 ◽  
Vol os-11 (3) ◽  
pp. 1558925002OS-01 ◽  
Author(s):  
Edward Vaughn ◽  
Gayetri Ramachandran
Keyword(s):  
Research Work ◽  
Test Methods ◽  
Air Filtration ◽  
Filter Media ◽  
Air Filter ◽  
Filter Performance ◽  
And Performance ◽  
Synthetic Media

This paper deals with ASHRAE filters used in air filtration applications and summarizes, on the basis of current research work, some of the reasons for the disagreement that exists among filter manufacturers concerning the properties and performance of various types of air filter media in general, glass and synthetic media in particular. Attention is also drawn to some important items that need to be incorporated in test methods and to some factors that could be affecting filter performance

Hierarchically structured polysulfone/titania fibrous membranes with enhanced air filtration performance

2014 ◽  
Vol 417 ◽  
pp. 18-26 ◽  
Author(s):  
Huigao Wan ◽  
Na Wang ◽  
Jianmao Yang ◽  
Yinsong Si ◽  
Kun Chen ◽  
...  
Keyword(s):  
Air Filtration ◽  
Filtration Performance ◽  
Fibrous Membranes

scholarly journals Influence of Spacer Design and Module Geometry on the Filtration Performance during Skim Milk Microfiltration with Flat Sheet and Spiral-Wound Membranes

Membranes ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 57
Author(s):  
Martin Hartinger ◽  
Jonas Napiwotzki ◽  
Eva-Maria Schmid ◽  
Dominik Hoffmann ◽  
Franziska Kurz ◽  
...  
Keyword(s):  
Skim Milk ◽  
Flow Distribution ◽  
Test Cell ◽  
Layer Formation ◽  
Filtration Performance ◽  
Flat Sheet ◽  
Collection Tube ◽  
Crossflow Velocity ◽  
Deposit Layer ◽  
Spiral Wound

Spacer design in spiral-wound membranes (SWMs) significantly affects the axial pressure drop in the flow channel but also the deposit layer removal. However, the effects of the spacer design and feed flow distribution in the module on the filtration performance have not yet been investigated during the highly fouling-susceptible fractionation of proteins from skim milk by SWMs. Therefore, a parallel spacer with no turbulence promotion and a less homogeneous feed flow distribution in the SWM was compared to a diamond spacer with regard to its impact on deposit formation and filtration performance. The experiments were conducted in a flat sheet test cell and in SWMs. The parallel spacer induced a more homogeneous deposit layer formation. However, no difference in filtration performance could be observed in the experiments with the test cell. Even though deposit layer formation dominates the microfiltration, its amount and spatial distribution could not be directly linked to the filtration performance. Furthermore, both spacers were assessed in SWM. Despite the higher crossflow velocity applicable in the more open channels of the parallel spacer, the performance of the parallel spacer was inferior to the diamond spacer. This was independent of the viscosity of the feed. Due to the high curvature of the membrane sheets close to the permeate collection tube, the cross-section of the flow channels in the SWM equipped with the parallel spacer was reduced. This resulted in a distinctly lower deposit layer control and performance, which could not be compensated by the resulting higher crossflow velocity far from the permeate collection tube.

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