C A S E S T U D YSOLUMSTRAND WWTP | DRAMMEN COUNCiL

” Norway’s most beautiful wastewater treatment plant in Norway’s coolest city”

C A S E S T U D YSOLUMSTRAND WWTP | DRAMMEN COUNCiL

Solumstrand Wastewater Treatment Plant was built

in 1991 with a capacity of 3.000 m3/h using primary

calcium precipitation and seawater. A subsequent

requirement for secondary treatment plus the need to

increase the capacity to compensate for the closing of

the Muusøya Treatment Plant, led to a major renewal

and expansion of the plant in 2011. The new design

capacity is 4.000 m3/h which includes both chemical

precipitation and biological treatment.

Solution Four of the existing 6 sedimentation basins were

converted to Kaldnes™ MBBR reactors while the

remaining two were rebuilt as dual-flow Actiflo®’s,

each with a capacity of 2.750 m3/h. This released more

space in the basins that could be used for storing

chemicals and dosage equipment. This combination of

processes increased the capacity and transformed the

treatment process without having to extend the plant

area.

Greater capacity - same floor footprint!

Creating water solutions in practice!

Existing sludge storage retained

Previously: Lines 1-4 chemical treatment stage

Now: Biological treatment

stage 1-4

Existing gravity densifiers retained

Previously: Lines 5-6 Chemical treatment stage

Now:- Chemical treatment stage 1-2

-Storage of precipitation chemicals- Polymer storage and pretreatment for

water treatment and densifying.

The whole chemical handling system was housed in the existing basin hall.

Actiflo® - from 0-100 in 10 minutes!

Kaldnes™ MBBR Actiflo®Four parallel lines with

2 Kaldnes™ MBBR in series followed by two Actiflo® units built on site

Reactor volume/line 2 x 390 m3 -

Reactor Lamella surface/line - 2 x 26 m2

Fill-level biomedia 59 % -

SALR (10°C) 11,5 g BOF5/m2*d -

Kaldnes™ biomedia Kaldnes™ K3 -

Air capacity 18.400 Nm3/t -

DESIGN

FACTS

Plexiglas inspection hatches

Polymer preparation

Alfa Laval sludge densifiers.

Solumstrand WWTP

Start-up 2011

Client: Drammen CouncilConsultant: Norconsult, Sandvika

Task:To design a treatment plant with expansion possibilities that can cater for large, seasonal variations in waste-water and organic loads.

Solution:Combine two well-proven technologies - the compact Kaldnes™ MBBR process for removing organic waste and Actiflo® for chemical precipitation and solids separation.

Design capacity:Qdim: 2000 m3/tQmaksdim: 4000 m3/t

Organic loading: 7755 kg BOF5/d 20350 kg KOF/d

Discharge requirementsBOF5: < 25 mg/l or > 70 % of purification effectKOFCr: < 125 mg/l or >75 % of purification effect

Tot-P: > 90% purification

KaldnesTM MBBR - completely sealed biological process

Kaldnes™ MBBR Actiflo®Four parallel lines with

2 Kaldnes™ MBBR in series followed by two Actiflo® units built on site

Reactor volume/line 2 x 390 m3 -

Reactor Lamella surface/line - 2 x 26 m2

Fill-level biomedia 59 % -

SALR (10°C) 11,5 g BOF5/m2*d -

Kaldnes™ biomedia Kaldnes™ K3 -

Air capacity 18.400 Nm3/t -

www.krugerkaldnes.nopost@krugerkaldnes.nophone: +47 91 60 80 00

C A S E S T U D YSOLUMSTRAND WWTP | DRAMMEN COUNCiL

JHR Produksjon - june, 2011

Solumstrand renseanlegg

Oppstart 2011

KundeDrammen kommune Konsulent: Norconsult

UtfordringÅ designe et renseanlegg med planlagt fremtidig utvidelse og store sesongvariasjoner i vannmengde og organisk belastning.

Løsning Kombinere to vel prøvede teknologier. Den kompakte Kaldnes™ MBBR prosessen for fjerning av organisk stoff og Actiflo® for kjemisk felling og partikkel separasjon.

Design kapasitet Qdim: 2000 m3/t Qdim maks: 4000 m3/t

Organisk belastning: 7755 kg BOF5/d 20350 kg KOF/d

Utslippskrav BOF5: < 25 mg/l eller > 70 % renseeffekt KOFCr: < 125 mg/l eller >75 % renseeffekt Tot-P: > 90% renseeffekt

Renseresultater

0

25

50

75100

125

150

175

200

225

250

275300

325

350

375

17.01.2011 06.02.2011 26.02.2011 18.03.2011 07.04.2011 27.04.2011 17.05.2011

BOF in BOF utmg

Resultater fra feb - apr 2011 Parameter Gjenomsnittlig

renseresultat Gjenomsnittlig

utløpsverdi BOF5 82 % 23 mg/L

KOF 82 % 80 mg/L

Tot-P 93 % 0,25 mg/L

Verdier basert på døgnblandprøver fra den inledande periode som till stor del varit en periode med intrimning og optimalisering.

®

0

200

400

600

800

1000

17.01.2011 06.02.2011 26.02.2011 18.03.2011 07.04.2011 27.04.2011 17.05.2011

KOF inn KOF utmg/l

0

1

2

3

4

5

6

7

8

9

10

17.01.2011 06.02.2011 26.02.2011 18.03.2011 07.04.2011 27.04.2011 17.05.2011

Tot-P inn Tot-P utmg/l

Resultater fra feb - apr 2011 Parameter Gjenomsnittlig

renseresultat Gjenomsnittlig

utløpsverdi BOF5 82 % 23 mg/L

KOF 82 % 80 mg/L

Tot-P 93 % 0,25 mg/L

Verdier basert på døgnblandprøver fra den inledande periode som till stor del varit en periode med intrimning og optimalisering.

®

0

200

400

600

800

1000

17.01.2011 06.02.2011 26.02.2011 18.03.2011 07.04.2011 27.04.2011 17.05.2011

KOF inn KOF utmg/l

0

1

2

3

4

5

6

7

8

9

10

17.01.2011 06.02.2011 26.02.2011 18.03.2011 07.04.2011 27.04.2011 17.05.2011

Tot-P inn Tot-P utmg/l

Parameter Mean purification result Mean discharge

BOF5 82 % 23 mg/L

KOF 82 % 80 mg/L

Tot-P 93 % 0,25 mg/L

Values based on daily mixed samples from the start-up period which included considerable adjustment and optimization..

Results from February - April, 2011