monitor and take control of the water quality in the ... · take control of the water production...
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MONITOR AND TAKE CONTROL OF THE WATER QUALITY IN THE PRODUCTION CHAIN FROM RAW WATER TO THE END USE
BACTIQUANT®-WATER– TOTAL BACTERIA IN MINUTES
ETV TECHNOLOGY VERIFICATION · US-EPA · 2012
Enzyme substrate
Fluorophore
Bacteria
ROBUST TECHNOLOGY FOR USE ON-SITE
Use the technology for on-site assessment of total bacterial load in water samples
Get timely results and reduce down-time of critical water systems
Respond quickly and maintain control
EASY SAMPLING AND ANALYSIS
The analysis is based on a highly sensitive fluorescence technology
The fluorescence signal is directly proportional to the content of bacteria
The Bactiquant®-water is a patented technology in use worldwide
BACTIQUANT®-WATER– TOTAL BACTERIA IN MINUTES
BQW-value CFU /ml equivalent
10 10-100
100 100 -1000
1000 1000-10000
10000 10000 –100000+
The CFU equivalent is based on total bacterial counts using R2A agar, 35oC, 48 hours.
BQW-VALUE INDICATE LEVEL OF BACTERIAL LOAD IN WATER SAMPLES
EARLY DETECTION OF DEVIATIONS
The aim of our utility and industry customers is to produce water of a uniform and high quality. The keyword is process control. The advantage over other methods of quality control, such as
“inspection” is that emphasis is on early detection and prevention of problems, rather than correction of problems after they have occurred and result in water of sub-standard quality. Mycometer has developed user friendly data handling software (FDA-21 CFR part 11 compatible) in collaboration with Grontmij a leading European company in the consulting and engineering industry, to establish operational control limits based on historical analysis data from critical control points and simple statistical calculations (ISO 11462-1).
The data handling system provides the operator with a rapid and comprehensive overview of water quality and helps in early detection of deviations from normal operation.
PREDICTABILITY AND CONSISTENCY SAVES YOU TIME AND MONEY
Producing biostable and safe drinking water is essential for water utilities. In industry, being in control of the process Water quality reduces the potential for production downtime and eliminates
the costs associated with fouled products due to introduction of sub-standard Water quality in the production process.
TAKE CONTROL OF THE WATER PRODUCTION CHAIN
Our utility and industry customers produce water of high quality by monitoring and controlling water quality in the whole production chain from raw water through treatment processes and distribution to the end use.
The concept is simple: 1) Identify Critical Control Points 2) Establish baselines at each Critical Control
Point 3) Stabilize baselines by eliminating assignable
sources of variation 4) Monitor and control the ongoing process.
MONITOR THE WATER PRODUCTION PLANT PROCESSES IN NEAR REAL TIME
Raw water
Ozonization
Sed/Flocc.
GAC
CLO2
CleanWaterTank
UV
Pumpstation
HBroken Pipeline
Consumer
Filtration
16650 690
21070
1900
= BQW-Value
MICROBIOLOGICAL MONITORING AND CONTROL IN THE PROCESS
The graph shows data from a water utility customer. The Critical Control Point is the outlet from a Water Work. Mycometer Software was used to calculate operational control limits (observation limit and action limit) based on historic data and simple statistical principles (ISO 11462-1) Initially the process was not in control. The operator of the Water utility tracked the source of variation to an inefficient filter flushing protocol. The filter flushing protocol was changed and the baseline stabilized.
Our customers use the Bactiquant technology to ensure that their processes are predictable, stable and consistently operating at a target level of performance. The illustration showsBQW-values measured in a Water Production Plant. Water is sampled from Critical Control Points in the whole production chain from
the surface water intake to the outlet of the Water Production Plant. The results provides the operator with a rapid overview of the performance level and allows for rapid adjustments if results deviate significantly from the performance level target.
0
20
40
60
80
100
120
140
BQ
W-v
alue
Sampling date5/27/2009 9/4/2009 12/13/2009 3/23/2010 7/1/2010 10/9/2010 1/17/2011
Outlet water workNot in control
In control
BQW-value average Observation limit Action limit
OUR CUSTOMERS ARE IN CONTROL
Our customers use the data handling software to produce consistent and predictable Water quality. When they have a stabilized baseline they are in control and they can deliver Water of a uniform and high quality. Improvements to the process are a continuous task and the data handling system is essential to sustain improvements and
keep reducing variations and mistakes. Actions to improve Water quality include establishing standard operating procedures, training staff and introduce changes to the system. The baselines can be used to evaluate the changes to a process when new procedures are implemented or new activities are introduced.
f(x)=a
(x-x0)
b(1+e )
40.000
30.000
20.000
10.000
0
0 20 40 60 80 100 120
Fluo
resc
ence
Time (hours)
Outlet ozonization
Outlet GAC
Outlet Treated water (chlorinated)
PRODUCING BIOSTABLE WATER IN UTILITIES AND THE INDUSTRY
Regrowth of micro-organisms in water distribution systems is caused by the utilisation of biodegradable compounds. Maintaining a low regrowth potential increase the biostabilty of the water and hence its robustness during storage and transport. Monitoring and controlling the regrowth potential of water is essential for optimizing chlorination and maintaining a disinfectant residual in the distribution system.
The regrowth potential can be easily monitored by determining the fluorescence generated in a Bactiquant assay every 24 hours for a period of 5-10 days. The results on regrowth potential are shown for ozonated water and GAC treated water. The ozonated water showed a high regrowth potential which was significantly decreased after the GAC treatment.
The regrowth potential is monitored by determining the flourescence produced in a Bactiquant assay every 24 hours for a period of 5-10 days.
TESTIMONIAL The most important task for a Drinking Water
Production Plant is to produce clean water of a high quality. Sandviken Energy and Water uses the Bactiquant technology to establish baselines for total bacteria in the production processes. We also use the technology for rapid tracking of water quality deviations in the distribution system, and as a rapid analysis tool in pipeline renovations and verification of cleaning efforts in reservoirs and sedimentation bassins.
HÅKAN BERGSTEN,HEAD OF PRODUCTIONSandviken Energy and water, Sweden
STATISTICAL PROCESS CONTROL (SPC)SPC is applied in order to monitor and control a process. SPC can be applied to any process where the product conformity can be measured. Key tools in SPC include control charts and a focus on continuous improvement. In order to gain the full potential of process monitoring and control it is important to establish a reaction plan that describes what you do when the result is above the control limit. A typical reaction plan includes retesting, establishing a trouble-shooting guide and protocols for adjusting the process.
US Mycometer, Inc. NA5002 S. MacDill Ave Tampa Florida 33611Tel. 813-831-6511
Europe Mycometer Dr. Neergaards vej 3DK-2970 HoersholmTel. +45 39 16 10 72