aerated filter Articles
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Influence of air flow rate and backwashing on the hydraulic behaviour of a submerged filter
The aim of this study was to evaluate backwashing effects on the apparent porosity of the filter media and on the hydraulic behaviour of a pilot scale submerged filter, prior to biofilm colonization, under different hydraulic retention times, and different air flow rates. Tracer curves were analysed with two mathematical models for ideal and non-ideal flow (axial dispersion and Wolf and Resnick ...
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Combination of microwave demulsification, ozone oxidation and biological aerated filter for advanced treatment of oilfield wastewater with low biodegradability
In this study, a combination process was developed in laboratory-scale including microwave demulsification, ozonation, and biological aerated filter (BAF) in series for the purpose of removing pollutants in oilfield wastewater with high microtoxicity. The microwave demulsification treatment removed 63.4% of oil. The ozonation treatment removed 79.3% of petroleum sulfonate, resulting in a ...
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Sewer mining - A hybrid solution
Bord na Mona Environmental Products US Inc. provides wastewater treatment, water reuse and odor & voc abatement solutions for municipal, decentralized, residential and industrial applications including the PuraM® membrane bioreactor, PuraMax® MBBR, PuraSaf® submerged aerated filter, Puraflo® peat biofilter, rainwater harvesting and the MONASHELL® biofilter for H2S, odor and VOC ...
By Anua
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Comparison of ferric chloride and aluminum sulfate on phosphorus removal and membrane fouling in MBR treating BAF effluent of municipal wastewater
A membrane bioreactor (MBR) was used for treating biological aerated filter effluent in a municipal wastewater plant, and chemical phosphorus removal was accomplished in the MBR. The results showed that ferric chloride of 20 mg/L and aluminum sulfate of 30 mg/L were the optimal dosages for total phosphorus (TP) removal, and the TP removal efficiency was over 80%. In long-term continuous ...
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Biological drinking water treatment Hong Kong
The water treatment works takes water from the river Dongjiang in the Guangdong Province north of Hong Kong. The raw water has an average turbidity level of around 11 NTU and contents, among other things, ammonia and manganese. Water temperatures range from 12 to 34oC. During planning of the waterworks use of primary aerated biological filters (PABF) was selected for removal of ammonia and ...
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Treatment of wastewater from a school in a decentralized filtration system by percolation over organic packing media
Based on results obtained in the laboratory a WWTP composed of a septic tank and an aerated percolating filter packed with organic media was built for a school. The system can treat 18 m3 d−1 and was operated with a hydraulic loading rate of 0.078 (m3 m−2 d−1). For 360 days different operational conditions including start-up; stabilization; operation with aeration and non aeration; effect of ...
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The solutions of domestic sewage treatment
The source of domestic sewage? Domestic sewage is the waste water discharged from the daily life of residents, mainly from residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ...
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Hospital Wastewater Treatment Process
1. The characteristics of hospital sewage Hospital waste water contains some special pollutants, such as drugs, disinfectants, diagnostic agents, detergents, and a large number of pathogenic microorganisms, parasite eggs and various viruses (such as roundworm eggs, hepatitis virus, tuberculosis and dysentery) . In addition, there are radioactive substances such as radium 226, phosphorus, gold ...
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