25 March 2019

AquaNES

Demonstrating synergies in combined natural and engineered processes for water treatment systems The AquaNES consortium consists of 30 partners of (waste)water utilities,  SMEs and industries as ...

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Demonstrating synergies in combined natural and engineered processes for water treatment systems

The AquaNES consortium consists of 30 partners of (waste)water utilities,  SMEs and industries as well as high level academic partners and research institutes from eight European countries, Israel and India, representing a good balance along a technology innovation value chain.

AquaNES pursues the concept of combined natural and engineered water treatment systems (cNES) as response to water management challenges. We consider:

• Bank filtration (BF)
• Managed aquifer recharge (MAR/soil/aquifer treatment (SAT)
• Constructed wetlands (CW)
• Plus engineered pre- and post-treatment options

Bank filtration
Five sites demonstrate the benefits of combining river bank filtration (BF) with different technical post- treatment options such as membrane processes (UF, NF and RO), ozonation,  and electrochlorination in pilot and full-scale sizes for innovative and resource-efficient  production of safe drinking water.

Pentair’s Bank filtration + Nanofiltration pilot at drinking water plant in Germany
Bank filtration as natural pre-treatment for capillary nanofiltration. Water from a well gallery (anoxic/ suboxic) of the drinking water plant in Berlin will be treated decentralized in a pilot unit.

Aims

Targeted pollutant removal at specific wells

•SO42-
•EDTA
•Micropollutants 

Compare different feed water qualities

•Redox potential
•Fe(II) & Mn(II) concentration
•TOC/ DOC, biopolymers
•Scaling & fouling propensity 

Demonstrate potential economic benefits

•Long-term process stability
•Impact of treated volumes
•Pumping efforts
•Membrane cleaning & replacement

First results

Feed: Drinking Water 1

Feed: Well Water 2

Parameter

Unit

Feed

Retention (%)

Feed

Retention (%)

UV254

1/m

8.7

±0.23

85

±6.5

(n = 9)

12.1

±1.01

89

±5.5

(n = 15)

DOC

mg/L

3.8

±0.21

82

±7.8

(n = 11)

4.7

±0.24

87

±6.4

(n = 15)

Sulphate

mg/L

149.1

±9.44

71

±8.5

(n = 11)

136.0

±7.37

67

±5.5

(n = 16)

Mg

mg/L

10.7

±0.43

64

±13.8

(n = 5)

11.7

±0.49

50

±6.0

(n = 10)

Hardness

dH

20.5

±0.66

55

±14.7

(n = 5)

18.8

±0.51

41

±5.2

(n = 10)

Ca

mg/L

128.6

±4.93

54

±14.8

(n = 5)

115.1

±3.16

40

±5.0

(n =10)

Fe total

mg/L

<LOQ

(n = 11)

1.8

±0.29

48

±8.7

(n = 15)

Fe2+

mg/L

<LOQ

(n = 11)

1.6

±0.28

48

±7.7

(n = 15)

Mn total

mg/L

<LOQ

(n = 11)

0.5

±0.05

42

±5.8

(n = 15)

Conductivity

µS/cm

948.0

±71.0

32

±5.8

(n = 11)

970.0

±78.3

22

±4.3

(n = 40)

EDTA

µg/L

11.0

±0.00

84

±10.3

(n = 2)

12.3

±3.73

92

±1.1

(n = 5)

Gabapentin

µg/L

0.1

±0.04

55

±12.1

(n = 4)

0.05

±0.03

46

±10.6

(n = 8) 3

Valsartan acid

µg/L

0.2

±0.06

58

±11.5

(n = 4)

0.1

±0.08

44

±10.2

(n = 8)

MTBE

µg/L

0.6

±0.32

14

±13.6

(n = 3)

9.2

±4.04

10

±9.2

(n = 10)

1 Variation of operational parameters (flux = 15.0–27.5 L/m²·h, rec = 50–85%, cfv = 0.2–1.0 m/s);

2 No variation of operational parameters (flux = 22.5 L/m²·h, rec = 75%, cfv = 0.5 m/s);

3 Feed and permeate values near LOQ;


More information

Would you like to have more information about our pilot project? Download our poster about our Bank filtration + Nanofiltration pilot.

Make sure you visit the bank filtration page on the AquaNES website. You can read more about our project and you can do a virtual tour through the plant.






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