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First full-scale combined MBBR, coagulation, flocculation, discfilter plant with phosphorus removal in France

Kängsepp, P. LU ; Sjölin, M. LU ; Mutlu, A. G. ; Teil, B. and Pellicer-Nàcher, C. (2020) In Water Practice and Technology 15(1). p.19-27
Abstract

The suspended solids (SS) concentrations in effluent from moving bed biofilm reactors (MBBRs) used for secondary biological treatment can be up to 500 mg/L. Microscreens (Drumfilters or Discfilters) can be used as alternatives to traditional clarification or dissolved air flotation to remove SS and total phosphorus (TP). This study shows how a small-scale municipal WWTP for 5,700 population equivalent (PE) can be upgraded to 12,000 PE by combining MBBR with coagulation-flocculation tanks and a Discfilter with a total footprint of 160 m2. This long-term investigation demonstrated that even though influent turbidity (range 146-431 NTU) and flow (25-125 m3/h) varied considerably, very low effluent turbidities (below 10 NTU) could be... (More)

The suspended solids (SS) concentrations in effluent from moving bed biofilm reactors (MBBRs) used for secondary biological treatment can be up to 500 mg/L. Microscreens (Drumfilters or Discfilters) can be used as alternatives to traditional clarification or dissolved air flotation to remove SS and total phosphorus (TP). This study shows how a small-scale municipal WWTP for 5,700 population equivalent (PE) can be upgraded to 12,000 PE by combining MBBR with coagulation-flocculation tanks and a Discfilter with a total footprint of 160 m2. This long-term investigation demonstrated that even though influent turbidity (range 146-431 NTU) and flow (25-125 m3/h) varied considerably, very low effluent turbidities (below 10 NTU) could be achieved continuously. Furthermore, this compact treatment system can provide average reductions of ammonium (NH4-N) from 19 to 0.04 mg/L, COD from 290 to 10 mg/L, and TP from 4.5 to 0.3 mg/L. The results show that effluent requirements can be reached by combining MBBR, coagulation-flocculation and disc filtration at full scale, without a primary clarifier upstream of MBBR.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Coagulation, Flocculation, Microscreen, Moving-bed biofilm reactor (MBBR), Phosphorus, Suspended solids
in
Water Practice and Technology
volume
15
issue
1
pages
9 pages
publisher
IWA Publishing
external identifiers
  • scopus:85083988586
ISSN
1751-231X
DOI
10.2166/wpt.2019.081
language
English
LU publication?
yes
id
b2440278-8bc7-4e0d-9942-647cc21fc857
date added to LUP
2020-05-13 17:12:29
date last changed
2023-12-04 13:34:12
@article{b2440278-8bc7-4e0d-9942-647cc21fc857,
  abstract     = {{<p>The suspended solids (SS) concentrations in effluent from moving bed biofilm reactors (MBBRs) used for secondary biological treatment can be up to 500 mg/L. Microscreens (Drumfilters or Discfilters) can be used as alternatives to traditional clarification or dissolved air flotation to remove SS and total phosphorus (TP). This study shows how a small-scale municipal WWTP for 5,700 population equivalent (PE) can be upgraded to 12,000 PE by combining MBBR with coagulation-flocculation tanks and a Discfilter with a total footprint of 160 m2. This long-term investigation demonstrated that even though influent turbidity (range 146-431 NTU) and flow (25-125 m3/h) varied considerably, very low effluent turbidities (below 10 NTU) could be achieved continuously. Furthermore, this compact treatment system can provide average reductions of ammonium (NH4-N) from 19 to 0.04 mg/L, COD from 290 to 10 mg/L, and TP from 4.5 to 0.3 mg/L. The results show that effluent requirements can be reached by combining MBBR, coagulation-flocculation and disc filtration at full scale, without a primary clarifier upstream of MBBR.</p>}},
  author       = {{Kängsepp, P. and Sjölin, M. and Mutlu, A. G. and Teil, B. and Pellicer-Nàcher, C.}},
  issn         = {{1751-231X}},
  keywords     = {{Coagulation; Flocculation; Microscreen; Moving-bed biofilm reactor (MBBR); Phosphorus; Suspended solids}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{1}},
  pages        = {{19--27}},
  publisher    = {{IWA Publishing}},
  series       = {{Water Practice and Technology}},
  title        = {{First full-scale combined MBBR, coagulation, flocculation, discfilter plant with phosphorus removal in France}},
  url          = {{http://dx.doi.org/10.2166/wpt.2019.081}},
  doi          = {{10.2166/wpt.2019.081}},
  volume       = {{15}},
  year         = {{2020}},
}