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

Russell K L Yap; Michael Holmes; William L Peirson; Michael Whittaker; Richard Stuetz; Bruce Jefferson; Rita K Henderson

doi:10.2166/wst.2012.373

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

Russell K L Yap, Michael Holmes, William L Peirson, Michael Whittaker, Richard Stuetz, Bruce Jefferson, Rita K Henderson

Research output: Contribution to journal › Article › Research › peer-review

7 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1684-1690
Number of pages	7
Journal	Water Science and Technology
Volume	66
Issue number	8
DOIs	https://doi.org/10.2166/wst.2012.373
Publication status	Published - 2012
Externally published	Yes

Keywords

Charge demand
Dissolved air flotation
Streaming current
Surface charge

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10.2166/wst.2012.373

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title = "Optimising dissolved air flotation/filtration treatment of algae-laden lagoon effluent using surface charge: A Bolivar treatment plant case study",

abstract = "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.",

keywords = "Charge demand, Dissolved air flotation, Streaming current, Surface charge",

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year = "2012",

doi = "10.2166/wst.2012.373",

language = "English",

volume = "66",

pages = "1684--1690",

journal = "Water Science and Technology",

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T1 - Optimising dissolved air flotation/filtration treatment of algae-laden lagoon effluent using surface charge

T2 - A Bolivar treatment plant case study

AU - Yap, Russell K L

AU - Holmes, Michael

AU - Peirson, William L

AU - Whittaker, Michael

AU - Stuetz, Richard

AU - Jefferson, Bruce

AU - Henderson, Rita K

PY - 2012

Y1 - 2012

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AB - 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.

KW - Charge demand

KW - Dissolved air flotation

KW - Streaming current

KW - Surface charge

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DO - 10.2166/wst.2012.373

M3 - Article

C2 - 22907452

AN - SCOPUS:84867908871

SN - 0273-1223

VL - 66

SP - 1684

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JO - Water Science and Technology

JF - Water Science and Technology

IS - 8

ER -

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

Abstract

Keywords

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