183 real time final effluent monitoring

8/11/2019 183 Real Time Final Effluent Monitoring

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Real-Time Final Effluent Ammonium & Other

Key Parameter Monitoring

Jo Cooper

Product & Market Specialist

Intellitect Water Limited
http://www.intellitect-water.co.uk/


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Real-Time Final Effluent Ammonium & Other

Key Parameter Monitoring

Analysis of real data

The monitor

Hints and tips

Benefits


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The Final Effluent (FE) Monitor

A multi-parameter (7) monitor

320mm in length

Flow cell mounted

24V DC

Direct insertion

Easy to fit sensors

No sample preparation

Flexible Real -Time Communications

Ethernet: TCP/IP

RS232/RS485:Modbus/SCADA

GPRS: TCP/IP/FTPAnalogue Outputs: 0 - 2.5V
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The Multi-Parameter Sensors

pH

ORP

Ammonium

ISE

Dissolved

Oxygen

(DO)

Conductivity

Turbidity

Temperature

36mm diameter sonde head


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The Ammonium ISE Sensor

Fast and accurate measurements

Stable measurement

Robust

Can be left dry for long periods

Concentration range 020mg/l

pH range 58

Temperature range 0+50oC

1 year life time


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Mounting of the FE Monitor in Flow Cell

GPRS Antenna

Inlet to Turbidity Sensors

Inlet to Chemical Sensors

Valves for flow

controlOutlet

PSU 24V DC

FE Monitor
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In-Line StrainerHayward Simplex basket strainer

Strainer basket 3.5mm mesh

Vertical mounting

Easy maintenance

Larger strainers are available

Spare Basket


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Strainer basket maintenance

Wear Personal

Protective Equipment

(PPE)

Clean with a water hose

(5 minutes)

For unmanned sites a

drop in flow is a good

indicator that the basketneeds cleaning


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Inbuilt Graphic User Interface (GUI)

Established via an

ethernet connection

Real-time readings at

a glance

Allows an easy

calibration (30 mins)

Data logging

frequency selection

(1/min1/hr)

Data retrieval (.dat,.xls)
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Heavy rainfall runoff seen in the peaks of increased

levels of ammonium at waste water treatment site

-

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

0 1/ 01 /2012 31 /01/ 20 12 01/ 03 /201 2 31 /03/ 20 12 30/ 04/ 201 2 3 0/ 05/ 2012 29 /0 6/ 20 12 2 9/ 07 /2012 28 /0 8/ 20 12 27/ 09 /201 2 27 /10/ 2012


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Reduction in flow indicating the strainer basket is in

need of cleaning

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

25/09/2012 30/09/2012 05/10/2012 10/10/2012 15/10/2012 20/10/2012 25/10/2012

18/10: Clean strainer basket

re-instates flow.


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Heavy rainfall runoff impacting on flow through to the

FE Monitor

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

0.5

25/09/2012 30/09/2012 05/10/2012 10/10/2012 15/10/2012 20/10/2012 25/10/2012

0

5

10

15

20

25

30

35

40

45

50

Flow Am monium

Heavy rainfall runoff

impacting on submersible

pump flow through to the

FE monitor
http://www.intellitect-water.co.uk/http://www.intellitect-water.co.uk/


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Heavy rainfall runoff seen in the peaks of increased

levels of ammonium at waste water treatment site

-

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

0 1/ 01 /2012 31 /01/ 20 12 01/ 03 /201 2 31 /03/ 20 12 30/ 04/ 201 2 3 0/ 05/ 2012 29 /0 6/ 20 12 2 9/ 07 /2012 28 /0 8/ 20 12 27/ 09 /201 2 27 /10/ 2012

What happened

here?


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Heavy rainfall runoff impacting on submersible pump

flow through to the FE Monitor

0

5

10

15

20

25

30

35

40

45

23/12/201 1 12 /01 /2 012 01 /02 /20 12 2 1/ 02 /20 12 1 2/ 03/ 201 2 0 1/ 04/ 201 2 21 /04 /20 12 1 1/ 05/ 20 12 3 1/ 05/ 201 2 2 0/0 6/ 201 2 10 /07/2012

0

0.2

0.4

0.6

0.8

1

1.2

Ammonium Flow


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The importance of cleaning

-

10.00

20.00

30.00

40.00

50.00

60.00

70.00

80.00

90.00

100.00

29/07/2012 05/08/2012 12/08/2012 19/08/2012 26/08/2012 02/09/2012 09/09/2012 16/09/2012 23/09/2012 30/09/2012

What happened

here?

17/09: Calibration of

Ammonium after cleaning

of the sonde head
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Sonde head prior to cleaning on 17/10


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An increase in ammonium also results in an increase in

conductivity

0

200

400

600

800

1000

1200

06/02/2012 08/02/2012 10/02/2012 12/02/2012 14/02/2012 16/02/2012 18/02/2012 20/02/2012

0

1

2

3

4

5

6

7

Conductivity Ammonium


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Increasing DO levels as the Ammonium levels drop

after runoff highs

0

50

100

150

200

250

300

06/02/2012 08/02/2012 10/02/2012 12/02/2012 14/02/2012 16/02/2012 18/02/2012 20/02/2012

0

1

2

3

4

5

6

7

DO Ammonium


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Other key parameters

0

200

400

600

800

1000

1200

1400

1600

1800

2000

06/02/2012 08/02/2012 10/02/2012 12/02/2012 14/02/2012 16/02/2012 18/02/2012 20/02/2012

0

2

4

6

8

10

12

14

ORP Turbidity Temperature pH Ammonium


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Hints and tips

Keep the sensors clean Ensure adequate flow (25 litres/min at study site)

Filter particles > 3.5mm via a strainer/basket

Routine Maintenance Check basket every week

Aim to clean the basket every 2/3 weeks (some sites may

require a larger strainer/basket

Clean the sonde head and sensors every 3-6 months (site

specific)

A drop in flow can be used as an indication that cleaning of

the basket is required
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Benefits

Multi-parameter Reagent free

No sample preparation

Easy to replace sensors

Less frequent maintenance Ideal for unmanned sites

Reduced overall costs compared to traditional reagentusing technologies

Multi-parameter single source measurements to aid

determination of inter-relationships More single source diagnostic information to guide

preventative maintenance process improvements
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183 real time final effluent monitoring

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