biological oxygen demand removal Articles

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Performance and metabolic aspects of a novel enhanced biological phosphorus removal system with intermittent feeding and alternate aeration

by IWA Publishing  (Apr. 24, 2014)

A novel enhanced biological phosphorus removal (EBPR) system, which combined the intermittent feeding design with an anaerobic selector, was examined using on-line oxidation reduction potential (ORP), nitrate and ammonium probes. Two experimental periods were investigated: the aerobic and anoxic phases were set at 40 and 20 minutes respectively ...

Cosmetics production with smart wastewater treatment– with the disposal technology from DAS

by DAS Environmental Expert GmbH  (Jul. 2, 2014)

Emil Kiessling GmbH relies on the TFR technology from Dresden (Germany) for wastewater treatment Emil Kiessling GmbH with headquarters in Georgensgmünd, Middle Franconia (Germany), is a successful cosmetics manufacturer. The product range includes natural cosmetics through to sun ...

Results of trials to remove BOD/COD from effluent arising from cellulosic fibre production case study

by Cleveland Biotech Ltd  (May 29, 2014)

A man-made natural fibre producer had produced a new high strength, fibrillated cellulosic fibre derived from wood pulp destined for use in garment manufacture. As a result of the IPC authorisation attached to the production of this product it became necessary to establish the biodegradability of various effluent streams leaving the production ...

Toxicity reduction and biodegradability enhancement of cork processing wastewaters by ozonation

by IWA Publishing  (Nov. 29, 2013)

Biodegradability enhancement and detoxification of cork boiling wastewater (CBW) are required for the successful implementation of biological treatment options. We studied the possibility of achieving these goals through ozonation pre-treatment by experimenting on the effect of ozone dose and pH. The CBW used had a pH of 5.81, a chemical oxygen ...

Vertical flow constructed wetlands: kinetics of nutrient and organic matter removal

by IWA Publishing  (Jul. 16, 2014)

The kinetics of organic matter and nutrient removal in a pilot vertical subsurface wetland with red ferralitic soil as substrate were evaluated. The wetland (20 m2) was planted with Cyperus alternifolius. The domestic wastewater that was treated in the wetland had undergone a primary treatment consisting of a septic moat and a buffer tank. From ...

An effective feature selection approach using hybrid particle swarm optimisation with spectral projected gradient algorithm for an up–flow anaerobic filter

by Inderscience Publishers  (Jun. 2, 2014)

Wastewater treatment plant (WWTP) helps to overcome water from excessive pollution. Chemical oxygen demand (COD) or biological oxygen demand (BOD) is the measure for the wastewater effluents. Up–flow anaerobic filter (UAF) is used for the removal and digestion of organic matter present in wastewater. In this work, the performance of the UAF with ...

Biological treatment of pharmaceutical wastewater from the antibiotics industry

by IWA Publishing  (Feb. 26, 2014)

Pharmaceutical wastewater generated by an antibiotics (penicillin) company was treated by aerobic membrane bioreactors (MBRs) and sequencing batch reactors (SBRs). At a low organic loading rate of 0.22 kg-COD m−3d−1, both types of reactors were capable of treating the wastewater such that the treated effluent met the discharge ...

Simultaneous carbon and nitrogen removal from municipal wastewater in full-scale unaerated/aerated submerged filters

by IWA Publishing  (Jan. 16, 2014)

Characterization and evaluation of a biological submerged filter was carried out on a full-scale pilot plant performing removal of biochemical oxygen demand (BOD) and total nitrogen (TN) from pre-treated urban wastewater. The average influent values of BOD5, chemical oxygen demand (COD) and TN were 370, 1,015 and 60 mg/L, respectively. The pilot ...

The impact of slowly biodegradable organic compounds on the oxygen uptake rate in activated sludge systems

by IWA Publishing  (Mar. 19, 2014)

The hydrolysis process of slowly biodegradable substrate (XS) has an impact on the efficiencies of nutrient removal in activated sludge systems. Measurement of oxygen utilization rates (OURs) and corresponding chemical oxygen demand (COD) is accepted as a very useful tool to reflect the consumption of biodegradable substrates. The influence of ...

Effects of injection of acetic acid and propionic acid for total phosphorus removal at high temperature in enhanced biological phosphorus removal process

by IWA Publishing  (May 20, 2014)

In summer, wastewater treatment plant total phosphorus (TP) removal efficiency is low in South Korea. The reason is because of high temperatures or significant fluctuation of inflow characteristics caused by frequent rainfall. Hence, this study tried to raise TP removal efficiency by injecting fixed external carbon sources in real sewage. ...

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