Water scarcity is on the rise worldwide. According to UNICEF, four billion people - almost two-thirds of the world's population - do not have enough drinking water for at least one month a year. And more than two billion people live in countries where the water supply is permanently inadequate. Often these are regions with high water pollution. At the same time, awareness of health issues is steadily increasing worldwide. These aspects are leading to ever increasing demands for good water quality.
To ensure that water is of good quality, it must be permanently monitored. This is achieved by means of sensors. An important indicator of water quality is its total organic carbon (TOC) level. Consequently, in the future TOC sensors will make a significant contribution to achieving better water quality in various markets and applications, such as in appliances, waterworks and bioreactors.
Water pollution is a huge problem today. But through monitoring the quality of various natural waters and drinking water, harmful effects on the environment and human health can be reduced and the efficiency of drinking water treatment optimized. To achieve this, various guidelines laid out in official ecological and drinking water quality regulations must be fulfilled. The requirements for process engineering and water quality control are increasing.
Reliable measuring stations that continuously supply data are therefore an essential component for dynamic process control and continuous monitoring of water Quality.
“Reliable monitoring stations that provide continuous data are an essential component of drinking water supply and environmental protection – both for dynamic process control as well as for continuous monitoring of water quality.”
Water Quality Sensing
An important parameter for measuring water quality is the TOC level, which is the amount of carbon contained in an organic compound, i.e. a measurement of all organic contaminants in water. Therefore, TOC is often used as a non-specific indicator of water quality or the cleanliness of pharmaceutical production facilities.
TOC sensors detect harmful pollutants, such as benzene and antibiotics, and industrial pollutants, such as pesticides, detergents, plastics and solvents. At the same time, the sensor also detects harmless pollutants, such as organic substances from algae or leaves.
TOC levels in drinking water are regulated by governments. The following limits apply:
US EPA: 4 mg/L
China: 5 mg/L
“No WHO health-based guideline value has yet been established. TOC is an indicator of organic matter, particularly in raw water. TOC is a useful operational water quality parameter to indicate change.”
Your Benefits Using a TOC Sensor
- Optimizes filter life-time
- Demonstrates to your customer the value of their product
- Collects water quality data
- Helps differentiate products from the competition
- Enables better understanding of local customers’ needs
Advantages for end users
- Provides real-time water quality information
- Creates alerts for severe contamination Events
- Monitors the lifetime and performance of filters
High-end water purifiers and water dispensers provide the user with confirmation and thus assurance that the water is safe to drink. A TOC sensor installed after the filter stage monitors whether the filter is working.
Waterworks and Wastewater
Treatment of wastewater in local waterworks ensures that water is safe for the environment and healthy to humans.
Devices that support biologically active environment to produce biological material on a large scale.
- Food and beverage sector
- Power plants
- Pharmaceutical industry
- Cosmetics sector
- Agriculture and aquaculture
Water Quality Trends
- The number of residential water filtration systems in use are on the rise. People want to monitor water at the point of use.
- The desire to collect real-time data is causing an increase in online monitoring of water. This in turn increases measurement accuracy and allows authorities to act quickly in the case of an emergency.
- The online monitoring of different water quality parameters optimizes cleaning processes and reduces costs.
- Digitalization enables online monitoring at multiple points of the distribution network.
- The Biden administration is proposing a total of 111 billion dollars in clean water and drinking water investments, including over USD10 billion for monitoring and remediation of per- and polyfluorinated substances (PFAS)
- Investments in clean water and drinking water are increasing worldwide, including in the monitoring and remediation of per- and polyfluorinated substances (PFAS)
- Strict regulations apply in various markets
- Pharmaceutical industry: need to comply with very strict regulations (low parameters range, special materials and standard protocols), plus the quality level needs to be high.
- Water management (wastewater, waterworks): governments provide standards of maximal concentration of contaminants, no clear test procedure mode.