GC‐MS analysis of odorous emissions from the dissolved air flotation units treating surplus activated sludge at a wastewater treatment works

Abstract Five cosmetics wastewater samples were treated by Dissolved Air Flotation (DAF) assisted by coagulation. Different aluminum based coagulants were used: (Al2(SO4)3, Al 1019, Al 3010, Al 3030, Al 3035, PAX 16 and PAX 19). The raw wastewater COD values were in the range 285-2124 mg/l. The efficiency of DAF depended on different coagulants and production profi le of factory. COD removal was varied from 11.1 to 77.7%. The efficiency of coagulants was similar during treatment of particular sample. The best results were obtained with Al2(SO4)3 and for sample 5 - lotions and shampoos production. The wastewater from UV fi lter creams production (sample 4) was resistant to treatment by DAF regardless of used coagulant. HS-SPME-GC-MS analysis can be a confirmation of DAF effectiveness

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Evaluation of flocculation and dissolved air flotation as an advanced wastewater treatment

Water Science & Technology ◽

10.2166/wst.2001.0470 ◽

2001 ◽

Vol 43 (8) ◽

pp. 83-90 ◽

Cited By ~ 7

Author(s):

A. C. Pinto Filho ◽

C. C. Brandão

Keyword(s):

Wastewater Treatment ◽

Domestic Wastewater ◽

High Rate ◽

Advanced Treatment ◽

Dissolved Air Flotation ◽

Anaerobic Reactor ◽

Treatment Processes ◽

Domestic Wastewater Treatment ◽

Air Flotation ◽

Dissolved Air

A bench scale study was carried out in order to evaluate the applicability of dissolved air flotation (DAF) as an advanced treatment for effluents from three different domestic wastewater treatment processes, namely: (i) a tertiary activated sludge plant ; (ii) an upflow sludge blanket anaerobic reactor (UASB); and (iii) a high-rate stabilization pond.

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DISSOLVED-AIR FLOTATION IN ACTIVATED SLUDGE

Eighth International Conference on Water Pollution Research ◽

10.1016/b978-0-08-020902-9.50047-x ◽

1978 ◽

pp. 311-322

Author(s):

J. Bratby ◽

G.V.R. Marais

Keyword(s):

Activated Sludge ◽

Dissolved Air Flotation ◽

Air Flotation ◽

Dissolved Air

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Optimising dissolved air flotation/filtration treatment of algae-laden lagoon effluent using surface charge: a Bolivar treatment plant case study

Water Science & Technology ◽

10.2166/wst.2012.373 ◽

2012 ◽

Vol 66 (8) ◽

pp. 1684-1690 ◽

Cited By ~ 2

Author(s):

Russell Yap ◽

Michael Holmes ◽

William Peirson ◽

Michael Whittaker ◽

Richard Stuetz ◽

...

Keyword(s):

Wastewater Treatment ◽

Surface Charge ◽

Wastewater Treatment Plant ◽

Pilot Plant ◽

Treatment Plant ◽

Dissolved Air Flotation ◽

Air Flotation ◽

A Charge ◽

Dissolved Air

Dissolved air flotation (DAF) incorporating filtration (DAFF) is used at the Bolivar wastewater treatment plant (WWTP) to polish lagoon effluent for reuse. Elevated algal populations are frequently experienced and can lead to increased coagulant requirements and process control issues. Streaming current detectors (SCDs) and a charge demand analyser (CDA) were used to monitor the full-scale plant. This was followed by an optimisation study using a pilot plant with a CDA. It was found that the normal operational charge demand range for DAF at Bolivar was between −46 and −40 μeq L−1. Decreasing the pH of coagulation reduced coagulant consumption and facilitated more sensitive CDA responses to changes in alum dose.

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