This document discusses river and reservoir monitoring solutions from Xylem. It describes Xylem's portfolio of brands and monitoring equipment for measuring parameters like flow, level, water quality, and conducting full discharge measurements. This includes in-situ sondes, handheld devices, permanent monitors, and analytics. It also covers topics like sensor quality, fouling prevention, data transmission, and design of monitoring stations. The goal is to provide customers with innovative tools to monitor water resources and help address challenges like water scarcity and pollution.
2. From ITT comes Xylem…..
•We are 12,000 people united in a common purpose: creating innovate solutions to global water challenges.
•Uniquely Positioned … in the attractive water industry
•Leading Brands … with a diversified portfolio
•World-Class Distribution Channels … reaching +150 countries
•Large Installed Base … lots of references and applications
3. Water Infrastructure :
Water Treatment
Water Transport
Water Sources
Wastewater Treatment
Wastewater Transport
Water Transport
Water Transport
Water is a key sustainability issue. Xylem is a water technology company.
Drivers
Depleting Water Supply
Tightening Regulations
Aging Infrastructure
Water Pollution
Climate change
Water Usage
13. Systems for Hydrology
FlowTracker
Instantaneous point velocity/discharge measurement by traditional wading gauging
RiverSurveyor & HydroSurveyor
Instantaneous discharge measurement with velocity profiles (ADP/ADCP) and channel bathymetry
Argonaut/IQ
Permanent or semi-permanent continuous velocity/discharge measurement. Channel edge (side looker) or bed mounted (up looker)
14. proven
accurate
User friendly
rugged
adaptable
Wading Measurements - FlowTracker
18. RiverSurveyor “S5” Shallow range system
•5 beams, dual frequency
4 beam Janus for velocity (3.0Mhz)
1 centered vertical beam (1.0 MHz)
•Velocity profiling range (0.06 m to 5.0 m)
•Vertical beam range (0.2 – 15 m)
•Discharge Measurement Range
0.3 to 5m referencing bottom tracking
0.3 to 15 m referencing GPS
•2.4” diameter transducer housing
19. RiverSurveyor “M9” Mid-Range system
•9 beams, tri-frequency, dual Janus array
4 beam Janus for velocity (3.0Mhz)
4 beam Janus for velocity (1.0 MHz)
1 vertical beam (0.5 MHz)
•Velocity profiling range (0.06 m – 40.0 m+)
•Vertical beam range (80m)
•Discharge measurement range
0.3 to 30m referencing bottom-track
0.3 to 80 m referencing GPS
* Max profiling range can vary depending on conditions
21. Power and Communication Module (PCM) Telemetry Configurations
Bluetooth mobile
60 m range
•Rover PCM and corresponding Base unit are matched and configured at factory
•No possibility for data drops – internal ADP calculations and processing
* Connects to laptop
22. Live! Software – Full Auto Discharge Measurements
.
Automatic adjustment between pulse-coherent and pulse in- coherent (narrowband) - optimizes overall performance.
Automatic velocity cell size adjustment – maximizes resolution in shallow depths and increases maximum depth range of system.
Automatic adjustment between high and low frequency acoustic transducers – optimizes overall performance and increase operational range. Automatic switching of frequency for Bottom Track
23. RiverSurveyor Live!
Vertical Beam and BT Depth plot
M9 with Bluetooth and DGPS/RTK/ VTG GPS
RTK and BT Reference Track
24. RiverSurveyor Live!
Independent data sampling – every sample can stand on its own
Start/End edge profiles differentiated from “Transect” profiles
25.
26. Floating platforms tethered boats
OceanScience
Tri-hull - USA
Hydroboard II
USA
Torrentboard Std & Mini Europe
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Yangtze ( Chang Jiang) 6300 Km Yellow River ( Huang he ) 5500 Km
Mekong 4350 Km Indus 3200 Km
Salveen 3000 Km Brahmaputra-Tsangpo 2950 Km
Ganges-Hooghly-Padma 1600 Km Pearl ( Zhu Jiang) 2200 Km
Ayeyarwady (Irrawaddy) 2200 Km
Mighty Rivers of Asia
INTRODUCTION
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Rivers and Reservoirs are an important part of Integrated Water Resources Management IWRM: -Water Quality / Pollution ? -Water quality in MINING and HYDRO FRACKING sites? -Water Supply / Shortages? -Flood Control? -Water Use ?( industrial, municipal & agricultural)
Mekong and Pearl River- Network
INTRODUCTION
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Monitoring of quality of Surface Water
Resources.
The water quality of a stream, a watershed, or
a large river system can be enhanced only by
collecting good information about current
conditions. That information is the foundation
of actions and measures to reach or maintain
a high water quality.
• Monitoring is necessary to ensure whether protection and restoration
measures are working.
• Long-term data collection is critical to identify trends or patterns. Water
quality can constantly change— during the day, from day to day, from
season to season, and from year to year.
• Protect drinking water resources
• Monitoring of pollution accidents of rivers ( TOC, COD )
Water Shed in
Thailand with
Monitoring Stations
(yellow spots)
INTRODUCTION
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Why do we need Water FLOW and LEVEL measurement ?
The quantity of stream-flow is an important factor in determining water quality and, thus, in interpreting water-quality data. The potential effects of contaminants on drinking-water supplies and aquatic habitats depend largely on the amount of water flowing in streams.
-Flood and Flash Flood: EARLY WARNINGS by SMS / e-mail.
-Measurement Stations with REAL TIME data transmission.
-Parameters are : Flow ( m³/s), Level (m), Rain (m3/m²).
-Data are available on the WEB.
-Discharge data also help with interpretation of water-quality data. ( f ex.: higher turbidity could come together with high or very high flow) Pollution = Concentration * Quantity
INTRODUCTION
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Continuous and automatic Water Quality Monitoring.
•Monitoring stations continuously measure dissolved oxygen, temperature, pH, specific conductance (TDS ; salinity), turbidity, suspended solids, algae, NO3, NO2, NH4, PO4, TOC, COD, BOD.
•These parameters are good indicators of river water quality and the effectiveness of upstream wastewater treatment plant (WWTP) operations.
•Polluters can be identified by long term 24/7 measurements
•Modern Analytical Equipment is highly sensitive. PPM / PPB
Is dilution the solution for pollution ?
INTRODUCTION
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The heart of every monitoring solution is the sensors ! The sensor quality determines the long term success of the installation and the TRUE COST of DATA. How to define : „Quality“ ? Very high accuracy & repeatability. Anti-fouling precautions Low sensor drift – long cal intervals Unique rugged and durable design Effective Integrated Cleaning
Quality Sensors reduce cost for maintenance, cleaning and calibrations
QUALITY and TRUE COST OF DATA
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Keep Clean or Keep Cleaning
Use the right materials to keep the TIP FREE OF FOULING:
Copper / PTFE
Use efficient Wiper / Brush:
Constant cleaning of YSI EXO Multiparameter Sonde
QUALITY and CLEANING
More info? http://info.xyleminc.com/AntifoulingBook.html?source=GoogleAd http://www.ysi.com/media/pdfs/YSI-EXO-Brochure.pdf
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Permanent ultrasonic vibrations keep the windows of OPTICAL sensors clean
All WTW Optical Sensors have Ultrasonic Cleaning
More info?
http://www.youtube.com/watch?v=TBqsHf62jDs&feature=youtu.be
QUALITY and CLEANING
See Video
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Ultrasonic Cleaning an UNIQUE feature
WTW Suspended Solids Sensor :
Visolid ® 700 IQ
WTW Turbidity Sensor :
Visoturb ® 700 IQ
QUALITY and CLEANING
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WTW Dissolved Oxygen Sensor
Trioxmatic® with additional Air Jet cleaning.
WTW Turbidity Sensor Visoturb ® 700 IQ
with additional Air Jet cleaning.
Air Jet – Air Bubble cleaning for VERY TOUGH applications
QUALITY and CLEANING
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Optical sensors for: COD; BOD; TOC; NO3; NO2; TUR.
WTW COD,TOC, NO3 Sensor :
Carbovis ® 700 IQ Nicavis ® 700 IQ Nitravis® 700 IQ
Integrated air jets
with ultrasonic AND air-jet cleaning
QUALITY and CLEANING
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COD
TOC
BOD
NO3
NO2
TSS
SAC
Carbovis ®
for COD measurement in RIVERS
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QUALITY and CLEANING
SonTek SIDE LOOKER ADCPs are easy to install and not effected by sedimentation on the riverbed
http://www.sontek.com/productsdetail.php?SonTek-SL-8#
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EXPERT ® RESISTANT to fouling
MJK Expert® piezo- resistive LEVEL sensors
A huge membrane, nearly impossible to clog
QUALITY and CLEANING
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Integrated Lightning Protection
shock proof
water resistant IP 68/IP66
EMC – protected against electro magnetic radiation
QUALITY resistant, sturdy and protected
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Lightning Protection
Reliable data is often most needed during heavy storms & floods, where risks such as lightning occur, especially where long cables are installed.
QUALITY resistant, sturdy and protected
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QUALITY resistant, sturdy and protected
SonTek SPF1500 Surge Kit with protection modules. This unique setup allows for protection of the top side PC & communications gear and underwater sensors from electrical surges of up to 15000V ESD. lightning
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QUALITY resistant, sturdy and protected
WTW lightning protection of up to 4000 Volts in all sensors and transmitters
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Avoid corrosion: Titanium and Saphire Glass
WTW COD-TOC-NO3 Sensor :
NicaVis ® & Carbovis ®
Made of Titanium
YSI EXO multiparameter Sonde :
Made of Titanium
QUALITY resistant, sturdy and protected
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LOW-DRIFT sensor designs:
QUALITY - CALIBRATION
WTW VisoLid 700 IQ® and VisoTurb 700 IQ® are „ no – drift “ sensors. Optics and electronics are designed to be extraordinary stable. Both are factory-calibrated. A recalibration is not required .
Sensor Signals
are immune to
ambient
light
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Individual CAL DATA on the membrane
module make the FDO 700 IQ the only
DO sensor which needs NO
CALIBRATION.
WTW FDO 700 IQ® membrane ( optical
fluorescence measurement) is individually
factory calibrated
- those individual calibration data are
permanently stored on a memo chip, which is
inside the membrane.
- calibration data are automatically passed to
the sensor, once the membrane is mounted
-
-
WTW FDO 700 IQ®
sensor for optical
measurement of
DISSOLVED OXYGEN
QUALITY - CALIBRATION
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WTW - FDO 700 IQ:
Green light gets warranty
extended from 6 months to 2
years
By using GREEN excitation light, ( instead of
blue) bleaching of the fluorescent dye in the
sensor membrane is minimized. This leads to
an exceptionally long lifetime of the
membranes and low maintenance
-
QUALITY - LONG LIFE
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Whenever a SENSOR is NOT available we need to use an ANALYZER XYLEM has Analyzers for: NH4 NO3/NO2 TOC(heated persulfate) COD(cr) PO4 TP Analyzers are optimized for:
•Short measurement intervals
•Low reagent consumption
•Low maintenance
•Automatic calibration
ANALYZER – Continuous Analysis in River Monitoring Stations
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TOC ONLINE with:
9210 p Analyzer heated persulfate oxidation
will oxidize it all, for most accurate results and regulatory compliance.
ANALYZER - TOC
In 40 CFR 133.104 the U.S. EPA allows to substitute TOC analysis for BOD5 monitoring, when a long-term correlation has been demonstrated. Gains in precision, economy, efficiency and accuracy are associated with TOC measurement.
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The OI TOC analyzer 9210 P
continuously monitors the sample stream, determines, and reports the TOC concentration.
It output signals are sent to a data logger for continuous storage of TOC data
Set alarms for high TOC levels are detected and SMS alarm messages are instantly created
ANALYZER - TOC
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WTW Trescon Analyzer for continuous measurement of NH4–TP- PO4-NO2-NO3 mounted in Monitoring Stations.
ANALYZER – Ammonium – Nitrate - Phosphate
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WTW Phosphate Analyzer P 700 IQ is based on the photometric ”yellow” method ( Molybdate- vanadate). It can be mounted outdoor and is famous for an extremely low reagent consumption.
Phosphorus compounds are considered to be the limiting nutrients in most waters. An increase in their concentration results directly in increasing eutrophication of the water
ANALYZER – Phosphate OUTDOOR
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How does a “MONITORING STATION” look like ?
DEPENDS:
WHERE to measure? On a river bank ? In the middle of a reservoir? Under a bridge ? On a boat ? On a van ?
WHAT PARAMETER to measure ? Some, such as turbidity or DO can be better measured directly in the river, flow and level have to be. For others, pumping water into a cabinet might be better.
Do we need to PROTECT the equipment against theft and vandalism ?
Do we need POWER SUPPLY, or do we have mains connection ?
Do we need WIRELESS DATA TRANSMISSION ( GSM, Radio, Satellite) ?
DESIGN of a MONITORING STATION
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DESIGN of a MONITORING STATION
Parts of a Monitoring Station ? Sensor “platforms”: Buoys, Pontoons, Trailers /Vans, Houses,Boxes, … Components: Datalogger; Solar panels, Batteries, Regulators, Junctions, Connectors, Antenna, Modems. Data transmission:Satellite, DAA, Iridium, GOES, GSM, GPRS, 3G, 4G, Radio. Data procession: Data on Web, Smartphone, Intranet.
“ The Brain”
Storm 3 Datalogger
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An automatic monitoring site may consist of
a land-based, lockable box, where river water
is continuously pumped into.
A pump as well as mains
power and a concrete
foundation are needed.
A fence can protect from
vandalism.
DESIGN of a MONITORING STATION
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An automatic monitoring site may also be a lot bigger; a shelter, a container, even a house may be used, … or a van:
DESIGN of a MONITORING STATION
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DESIGN of a MONITORING STATION
If the only water measurement parameter is the LEVEL, the monitoring station can be very small: The level sensor is directly
immersed. Data collection (logger)
and wireless transmission is
included. Powered by solar or
battery. Level sensors can be
hydrostatic, sonar, radar.
MJK Chatter® inside the gray tube. Modem and battery included
(optional: plus rain-fall)
Logger, Modem – solar power
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DESIGN of a MONITORING STATION
Whenever all sensors are directly immersed in the water: Data collection (Storm Logger)
Wireless data transmission
Solar power.
pH – ORP - DO – Cond – Sal – TDS – Algae – Depth – NO3 – NH4 – Chlorophyll – Blue/Green Algae – Turbidity – Cloride – FDOM –COD –TOC – Suspended Solids – Flow – Level
MLB Logger box
- no fixed IP required
- all XYLEM sensors can be connected
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DESIGN of a MONITORING STATION
Reservoir Measurement Sensors are hanging beneath a buoy.
Solar powered and wireless data transmission
With STORM ® logger & modem
YSI sondes and buoys.
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Telemetry
Telemetry reduces costly trips into the field and provides immediate information about environmental events.
Xylem has the products and experience to provide a telemetry system for virtually any location.
Satellite
Cellular
Spread Spectrum
Ethernet
Landline
WIRELESS DATA TRANSMISSION
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Telemetered sites have IP loggers that send data via the 3G / 4G network, to a data server.
Cellular Modems are probably the most popular and definitely the most economic modems:
WIRELESS DATA TRANSMISSION
GSM
-GPRS
-Circuit Switched CDMA Cellular Advantages
-High bandwidth
-Lower cost
-No base station hardware
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Additional Telemetry Options
Spread Spectrum
•2.4 GHz
•900 MHz
•Base Station Required
•Line of Sight Required Ethernet
•Cat-5 cable
•WiFi
Landline
radio
base station
computer
WIRELESS DATA TRANSMISSION
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Telemetry and Data Retrieval
https://stormcentral.waterlog.com
•Storm Central is a cloud data collection service
•Wherever your data loggers are located, their real-time data can be accessed
•Alarms, automatic report generation, and photos detailing each of your sites.
WIRELESS DATA TRANSMISSION
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The USB ports are used with thumb drives, Wi-Fi adaptors and direct connect cables to PC, etc…
The 4 Digital I/O lines can be used as a status input, a counter input or a conditional output.
4 single ended analog input channels.
RS232 port used for remote displays and other communication equipment.
The RS485 is used for bubbler systems and the YSI EXO
The SDI-12 operates as a ‘Master’ and is compliant to version 1.3 of the SDI-12 standard.
WIRELESS DATA TRANSMISSION
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• No special software needed- works on PC's, tablets and smart phones
• Works on all standard web browsers
• Built in help menus
• Browser based graphical user interface
• Compatible with sensors of almost any kind, including level, meteorological and bubblers.
WIRELESS DATA TRANSMISSION
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View more parameters,
simultaneously.
The name of the connection is listed here. This is very useful for wireless connections.
The ‘Scanning’ status is listed on every page.
The Site ID is listed on every page for reference. On the ‘Home’ page it can also be changed.
WIRELESS DATA TRANSMISSION
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Data are shown as:
-Total Daily / Monthly / Annual discharge in m³/s.
-Means , maximum and Minimum discharge
-Plot for max last 5 years.
-Map
WIRELESS DATA TRANSMISSION
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MLB 100:
-all XYLEM sensors can be connected -no fixed IP address needed -easy to install and flexible. -assembled by XYLEM according to costomer needs. -affordable software solutions.
WIRELESS DATA TRANSMISSION
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Some call it „Sampling“, some „Field Measurement“: Take a water resistant and battery powered meter to perform SPOT MEASUREMENTS directly in the river.
ANALYTICAL SAMPLING
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YSI DO / Multi Meter – leading worldwide
ANALYTICAL SAMPLING
IP 67
https://www.youtube.com/watch?v=gDWvbqO1QOU
https://www.youtube.com/watch?v=7CMjmGCO4Ug
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Xylem companies have been selling equipment into RIVER & RESERVOIR MONITORING for more than 15 years. Please find some examples on the following pages
EXAMPLES + Applications
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CHINA: This River Monitoring Station in Jiangsu Baidugang measures: pH, DO, Conductivity, Turbidity and Temperature, COD, NH4-N, TP, TN, TOC and flow. Sampler PB 150 takes an automatic sample when a limit is reached. Every 4 hours, data is sent by CDMA wireless to Jiangsu Province Authorities
EXAMPLES + Applications
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CHINA: The River Monitoring Shangdong, Lichun River Station close to Qingdao measures: pH, DO, Conductivity, Turbidity, Temperature, NH4-N, COD and Flow. WTW instruments are used: IQ Sensor Net , TCU/A111 for NH4-N and PB 150 sampler.
EXAMPLES + Applications
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CHINA: Water Monitoring System for Weifang Drinking Water Resource Xiashan reservoir is the important drinking water resource of Weifang city, It has 4 stations, 3 for inlet of the reservoir, 1 for outlet. We used WTW IQ Sensornet; NH4-N (TUC/A111), NO3-N and TP ( TresCon P5111+ON210 ) and PB 150 sampler to take sample when limits are reached.
EXAMPLES + Applications
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Fixed Profilers Shingmun Reservoir, Hong Kong
Problem: water has a high concentration of manganese dioxide, giving the water a yellow color.
The water is treated by aeration to oxidize the manganese dioxide.
Continuous monitoring of DO at various depths will allow the automation of aeration.
EXAMPLES + Applications
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THAILAND: River Monitoring Station : Klong Bang Ngew / Bangkok. Installation of standard parameter plus Nicavis 700 IQ for COD and NO3
EXAMPLES + Applications
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THAILAND: Carbovis 700 IQ installation with “flow through” housing, feeded by a small membrane pump from an overflow vessel
EXAMPLES + Applications
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Accurate Flow Instantaneous Discharge Tools
Survey of Stream & Channels (< 1.0 meter depth) “FlowTracker”
EXAMPLES + Applications
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Accurate Flow
Instantaneous Discharge Tools
Survey of Rivers
(0.5 – 40 meters depth)
“Riversurveyor M9”
EXAMPLES + Applications
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FLOW with IQ in irrigation & drainage small rivers (< 5 meters depth) IQ+, IQ Pipe
EXAMPLES + Applications
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AUSTRALIA: RIVER Monitoring Station in Queensland, 25 meters above water level (High water level fluctuations) Instruments used: WTW MIQ 2020 with: - Visoturb 700 IQ - Sensolyt700 IQ
EXAMPLES + Applications
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THAILAND: RIVER Monitoring Station in Bangkok, WTW MIQ 2020 with: - Visoturb 700 IQ - Sensolyt700 IQ - FDO 700 IQ - Visolid 700 IQ
EXAMPLES + Applications
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VIETNAM: RIVER Measurement of Turbidity, pH, DO, Sal. NHUE river
EXAMPLES + Applications
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THAILAND: RIVER Measurement of Turbidity, pH, DO, COD, SS, SAL.
EXAMPLES + Applications
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MALAYSIA: ”River of Life ” RIVER Measurement: Turbidity, pH, DO, COD, BOD, TOC in Jambatan Petaling Instruments used: WTW Carbovis ®; IQ Sensornet.
EXAMPLES + Applications
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Buoy Profilers – Reference Site: Lake Mead, Nevada
Drinking water reservoir that serves over 22 million users
Interest in real-time monitoring for:
•DO and temperature which can impact lake use
•Thermocline depth near drinking water intakes
•Impacts of population growth on water quality and provide data for models
http://nevada.usgs.gov/lmqw/index.htm
One of five automated vertical profiling station in Lake Mead where depths are 50m or greater.
EXAMPLES + Applications
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SINGAPORE:
RIVER Measurement of Turbidity
/Suspended Solids along SING
RIVER. Wireless data
transmission, Including CCTV of
the measurement location
EXAMPLES + Applications
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CHINA: RIVER Measurement of DO, SAL, TURB, NH4, NO3, NO2,TP. The installation purpose is to measure online and send the data to a centre receiving station. Why did they choose WTW? Measuring result / Customer comment: “The measurement is stable and the response is fast. The required maintenance is low and we can prepare the reagent locally.“
Gan River Monitoring Station for Nanchang City, Jiangxi Province Nanchang Environment Monitoring Centre Nanchang Nerin Automation Co., Ltd.Address 2F, Overseas Building, High-Tech Industry Development Area, Nanchang, 330029
EXAMPLES + Applications
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THAILAND: RIVER Measurement of DO, SAL, TURB. The blue float contains a submersible pump, which feeds water into the analyzer.
EXAMPLES + Applications
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River Monitoring in Germany
Parameters
• D.O.
• pH/ORP
• Conductivity
• NO3-N
• NH4-N
• Turbidity
• TSS
• Total Phosphate
• TOC
IQ SENSORNETTM
• Where: Jena, Germany
• What: Demonstration of
application of the SWAT model
within a large-scale catchment
• Benefit: prove suitability of model
for its use for the European Water
Framework Directive
EXAMPLES + Applications
Best way to sample ?
Submersible pump below
the station.
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River Sedimentation Monitoring
• Customer: WSA Hamburg and WSA Cuxhaven
• What: Monitoring the sediment transport at 16 strategic
locations providing input to scientific models to support
dredging activities
• Where: River Elbe (Germany) between Hamburg-
Cuxhaven
• Benefit: Ensure the navigability of the Elbe; providing
efficient vessel traffic
EXAMPLES + Applications
Offering from xylem:
• Seaguard (buoy-mounted) with current,
conductivity, oxygen and turbidity
sensors installed close to the river bed
and near surface at each site
• All stations fully automated, transmitting
real-time data to customer headquarters
• Pile Station, 10 ea.
• Data Buoy, 6 ea. (+1 spare)
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THAILAND: SOURCE WATER MONITORING & EARLY WARNING. Measurement in a small station on a boat landing stage. YSI 6 series sonde with 6500 display unit.
EXAMPLES + Applications
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Hydroelectric Power in Laos Satellite communication
Customer: Nam Theun 2 Power Company Ltd. The Project’s industrial potential comes from a gift of nature: the abundant water on the Nakai Plateau in Khammouane Province, central Laos, and the 350 m height difference between the Plateau and the Gnommalath Plain below. The power of this water, channelled down a tunnel drilled through the karst mountain, can generate an average 6,000 GWh of electricity per year. What: Water Quality and Level Monitoring Station Benefit: Level monitoring with low maintenance and high accuracy for plant operation
Water Level Sensor WL400
EXAMPLES + Applications
http://namtheun2.com
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Chilika Lake Monitoring Project
Chilika lake with an area of 1100Km2 is the
largest coastal lagoon in India and second largest in the world.
The lakes health monitoring system includes:
10 EMM68 buoy based water quality monitoring stations measuring :
Temperature, Conductivity
pH, Dissolved Oxygen, Turbidity, Chlorophyll & Blue Green Algae
and
sending data to the
project office every 15 min over GSM/GPRS
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EXAMPLES + Applications
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Other projects in India
Indira Gandhi Nahar Project – Doppler technology flow monitoring at 100 Locations Maharashtra RTDAS – Data Acquiring and Communication Technology, ADCPs BBMB RTDAS – Snow and Hydrology monitoring solution ICZMP – Supply of Coastal Monitoring Equipment (Aanderaa, YSI, SonTek, Integrated Systems CRIDA – 100 Integrated Meteorological Monitoring Station Network for Agro-meteorology Chilika Lake Development Authority – 10 buoy based Lake Water Level monitoring system and ADCP
4/4/2013
Xylem: A Company Overview
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PROFILER: Collect real-time data at multiple depth in a drinking water reservoir
EXAMPLES + Applications
