Indeed, water is the source of life and a vital part of every aspect of human life. Life simply cannot survive without water. However, water quality is under threat. This is not only for drinking but for the water that flows through oceans, to back marine life, fishing, and the aquaculture sector. The reasons are quite clear: poor national land management, irrigation practices, waste practices, and increasing chemical concentration. Thus, from ports to fishing, from marine to rivers, water quality monitoring is crucial to examine the water’s health.
As technological advancements continue to evolve, water quality sensors have become indispensable in many industries. In this article, we will explore how modern water quality monitoring helps and contributes to environmental management. Let’s start with the basics.
Why Water Quality Monitoring Matters?
Monitoring water quality is undoubtedly important for both human lives and companies. It allows us to evaluate how they are changing, analyze trends, and contribute to plans and strategies that improve water quality. There are several factors that determine the water quality. This involves dissolved oxygen, nitrates, pH scale, bioindicators, turbidity, and water temperature. Meanwhile, the invention of the dissolved oxygen sensor has advanced water quality monitoring.
Let’s discuss the purpose of water quality monitoring in-depth:
Monitoring water quality helps in identifying particular pollutants, chemicals, and the source of the pollution
There are multiple sources of water pollution, including wastewater from sewage, agricultural practices, oil pollution, river and marine dumping, and most importantly, shipping and industrial activity. Hence, monitoring water quality helps in identifying the particular source of pollutant water and other issues.
Analysing trends- short and long term
Data collected over a particular time period helps in identifying the trends, for instance, increasing concentration of nitrogen pollution in the river or groundwater. The comprehensive data helps in finding the major water quality parameters.
Environmental planning methods
Collecting, analysing, and employing data is crucial for the development of a promising and effective quality water strategy. Lack of real-time data can impact the strategy development and hinder pollution control. Hence, the use of modern water quality monitoring systems helps in collecting data and finding solutions to the issues.
Compliance with International Standards
Monitoring water quality is not an ordinary issue but a global concern. Different countries have their own set of standards that support the goals for environmental preservation and reducing water pollution. Hence, countries have realised the significance of effective water quality monitoring methods and parameters.
Water quality monitoring in emergencies
Whenever an emergency situation takes place- oil leaks from shipping tankers or flooding because of huge stormwater runoff, real-time data to evaluate the impact of pollution on water quality is important.
Modern Water Quality Monitoring Solutions
Water quality sensors are the key solutions that leverage chemical, physical, or biological reactions to evaluate indicators like conductivity, dissolved oxygen, pH, COD, residual chlorine, and turbidity in solutions. These sensors are helpful in finding valuable data that not only support the researchers but are commonly used in laboratory studies, assessments of marine water quality, aquaculture, and wastewater treatment.
Key Components and Functions of a Water Quality Monitoring System
Here are the key components and functions of the system:
Water Quality Sensors
Water quality monitoring solutions employ many sensors to measure physical, chemical, and biological factors in water bodies like pH, dissolved oxygen concentration, chemical oxidation-reduction potential (ORP), temperature, and turbidity. Sensors are generally implemented in water bodies or water treatment measures. It shares data with the data collection systems through wiring or signal transmission systems.
Data Collectors
Data collectors are being leveraged to keep and record data gathered from the sensors. These collectors are specific monitoring hosts or computer systems linked to a network. Data collecting systems also manage the transmission, storage, and data backup.
Data Management Tools
Water quality monitoring technologies leverage processing and analysis tools to examine the collected data. These tools can process and analyze the data based on the existing standards and thresholds, product water quality assessment reports, and trace abnormalities or significant pollution cases.
Reporting and Alert Systems
Water quality monitoring technologies can also produce regular water quality reports, deliver detailed data analysis and evaluation to assist users in realizing the water health. Additionally, the solution can also implement flagging mechanisms. After detecting the properties that the preset threshold is exceeded or abnormalities, an alert will be sent to relevant stakeholders instantly. Hence, they can take immediate action.
Water Quality Sensors That Actually Work
Dissolved Oxygen Sensor
The dissolved oxygen sensor can automatically and consistently monitor the dissolved oxygen levels. It applies the principle of fluorescence measurement. Such a process does not require oxygen and electrolytes.
PH Sensor
While performing water quality testing, the water pH value may be one of the important variables you hear about. Generally, the pH of household water should be between 6.5 and 8.5 since most microorganisms thrive in a pH range of 4.5 to 9.
Conductivity Sensor
Conductivity is the ability of a system to conduct electricity. In water quality sensors, it is one of the key factors representing water quality. It is always better to have higher conductivity in water.
Residual Chlorine Sensor
Disinfectants for sterilization are being used in both drinking water and swimming pools, and these disinfectants are chlorine-based compounds. Excessive chlorine can stink and make the water lose its ability to maintain sterilization. Hence, a residual chlorine sensor can help in monitoring concentration.
Turbidity Sensor
Turbidity is associated with the discarded particles in water. Hence, turbidity sensors generally use scattered light to test the signal and compute the turbidity value by evaluating the intensity of the scattered light.
Apart from this, ORP sensor, COD sensor, Ammonia Nitrogen Ion sensor, chlorophyll sensor, Green Algae sensor, and water ion sensor are also important solutions for monitoring water quality.
Final Thoughts
In the end, water quality monitoring covers a large range of applications and different environments. Renke is a water quality manufacturer that offers all these sensors and additional technologies for robust water quality monitoring. It offers accurate and cost-effective solutions that can be used in industrial systems or for research purposes.
