scholarly journals Evaluation of Anaerobic Filter Bed-Biological Filtration Process with Physicochemical Phosphorus Removal Methods.

2002 ◽  
Vol 38 (1) ◽  
pp. 47-55 ◽  
Author(s):  
YASUHIRO YAMAMOTO ◽  
YUJI MIURA ◽  
MITSURU INOUE ◽  
NAOSHI FUJIMOTO ◽  
YUHEI INAMORI ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Filtration Process ◽  
Biological Filtration ◽  
Anaerobic Filter ◽  
Filter Bed

scholarly journals AOC removal and accumulation of bacteria in experimental sand filters

2005 ◽  
Vol 5 ◽  
pp. 17-32 ◽  
Author(s):  
W. A.M. Hijnen, ◽  
D. Van Der Kooij
Keyword(s):  
Tap Water ◽  
Microbiological Activity ◽  
Filtration Process ◽  
Sand Filters ◽  
Biological Filtration ◽  
Acetate Concentration ◽  
Assimilable Organic Carbon ◽  
Filter Bed ◽  
Reduction Capacity

Using small sand filets under well defined laboratory conditions, filtration experiments were performed with tap water supplemented with acetate. The objective of these experiments was to determine the effect of different acetate concentrations on (i) the removal of easily assimilable organic carbon (AOC) in the filter (ii), the clogging of the tiller and (iii) the bacteriological quality of the filtrate. The results of the experiments revealed that the reduction capacity of biological filtration processes for acetate is relatively high. Acetate removal resulted in an increased microbiological activity in the top layer (< 1cm) of the filter bed and accumulation of bacterial matter was observed at an influent AOC concentration as low as 0.005 mg of ac-C eq/l. Clogging of the filter bed occurred at an influent acetate concentration of 0.01 mg C/l. Based on these observations it was concluded that the AOC concentration of water used for infiltration in recharge wells should be less thon 0.01 mg ac-C eq/l. This level is similar to the level advised for biologically-stable drinking water. A linear relationship was found between the acetate removal in the experimental filters and the colony count in the filtrate. It was recommended that the AOC load in the final filtration process in water treatment therefore should be limited to prevent high colony counts in the filtrate, thus leading to the use of post disinfection.

Performance characteristics of phosphorus removal in sewage treatment using electrocoagulation and fiber filtration process

2019 ◽  
Vol 154 ◽  
pp. 141-146
Author(s):  
Gahee Kim ◽  
Taewoo Kim ◽  
Juwon Jang ◽  
Jesmin Akter ◽  
Hosik Lee
Keyword(s):  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Performance Characteristics ◽  
Filtration Process

Advanced treatment of sewage by pre-coagulation and biological filtration process

2003 ◽  
Vol 37 (17) ◽  
pp. 4259-4269 ◽  
Author(s):  
Taira Hidaka ◽  
Hiroshi Tsuno ◽  
Naoyuki Kishimoto
Keyword(s):  
Advanced Treatment ◽  
Filtration Process ◽  
Biological Filtration

scholarly journals Household joint treatment tank with anaerobic filter bed.

1987 ◽  
Vol 16 (1) ◽  
pp. 95-97
Author(s):  
Yoshinori HIWASA ◽  
Tutomu KASHIMURA ◽  
Taro HIROMOTO ◽  
Nobuhiko ARAI
Keyword(s):  
Anaerobic Filter ◽  
Treatment Tank ◽  
Filter Bed ◽  
Joint Treatment

Biological phosphorus uptake in submerged biofilters with nitrogen removal

1994 ◽  
Vol 29 (10-11) ◽  
pp. 135-143 ◽  
Author(s):  
R. F. Gonçalves ◽  
L. Le Grand ◽  
F. Rogalla
Keyword(s):  
Phosphorus Removal ◽  
Phosphorus Uptake ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Biological Phosphorus Removal ◽  
Low Phosphorus ◽  
Nitrification And Denitrification ◽  
Aerated Filter ◽  
Filter Bed ◽  
Biological Phosphorus

This paper introduces biological phosphorus removal (Bio-P) from wastewater on a submerged biofilter. Pilot scale research was carried out over a period of two years using a floating upflow aerated filter, originally designed for nitrification and denitrification of sewage. The factors which influence Bio-P on fixed film processes and the possible biofilter configurations which eliminate C, N and P are discussed. The procedures are applicable to all types of treatment plants using biofilters, both new and already in existence, making no distinction between the different processes available today, co-current and counter-current filters. Biological phosphorus removal can be associated to the different treatment levels required: organic matter removal; secondary nitrification secondary nitrification and denitrification. For the third option - complete nutrient removal, treatment is completed with a hydraulic retention time in the filter bed of under four hours. Because of the simultaneous filtration with effluent SS below 10 mg/l, low phosphorus residuals can be achieved by Bio-P alone. The modifications required for setting up this operating procedure on any treatment plant are presented.

scholarly journals Actual case of domestic waste water treatment by the anaerobic filter bed.

1987 ◽  
Vol 16 (1) ◽  
pp. 91-94
Author(s):  
Yasuji YAMAMOTO ◽  
Shigeru KAWANISHI ◽  
Wataru SUGIURA ◽  
Hitoshi NAKANO ◽  
Takane KITAO ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Domestic Waste ◽  
Actual Case ◽  
Anaerobic Filter ◽  
Filter Bed

Study on phosphorus removal using a new coagulation system

1994 ◽  
Vol 30 (6) ◽  
pp. 257-262 ◽  
Author(s):  
Weimin Xie ◽  
Masao Kondo ◽  
Yuzuru Naito
Keyword(s):  
Pressure Drop ◽  
Removal Efficiency ◽  
Phosphorus Removal ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Coagulation System ◽  
Soluble Phosphorus ◽  
Filter Bed ◽  
Coagulation And Filtration ◽  
Removal System

In this study, the conditions for coagulation and filtration to gain high phosphorus removal efficiency were investigated with a coagulation-filtration phosphorus removal system and its practicability was confirmed. Sand of 0.6 mm in diameter, anthracite of 1.2 mm in diameter and a mixture of both were examined as a filter media, and the dual filter bed proved to be superior in the aspects of pressure drop and breakthrough. This system can be operated continuously for over 20 hours. A blocked filter bed can be recovered by backwashing. Over 80% phosphorus removal efficiency is achieved at an LV of under 5.0 m·hr−1. when the PAC dose is controlled so that the A1/P mole ratio would be 3.0 for the first period, and then subsequently around 2.0. Flocs caught in the filter further adsorb the soluble phosphorus in the wastewater, thus the chemical requirement can be reduced compared to the chemical precipitation method.

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