What are the parameters for routine surface water monitoring?

surface water refers to the general term for dynamic water and static water on the land surface, including various liquid and solid water bodies, mainly rivers, lakes, swamps, glaciers, ice caps, etc.. It is one of the important sources of water for human life and a major component of water resources in various countries. Rivers are widely distributed, have rapid water renewal, and are easy to access. They have always been the main water source for human development and utilization. Lakes and reservoris are water bodies that store and regulate runoff and renew slowly. Water is the source of life. It is directly related to the survival of all mankind and affects the economic development of a country. Monitoring surface water is a very meaningful task. Only by monitoring surface water well can we grasp the pollution of water resources. By understanding the current situation of water resources, we can better propose corresponding improvement measures, carry out sewage treatment, etc., purify water sources, and protect the environment. Usually, there are several common parameters for surface water monitoring, namely pH, conductivity, dissolved oxygen, turbidity and temperature.

The significance of surface water pH measurement

changes in pH value in surface water quality will affect the ability of algae to absorb oxygen and the sensitivity of animals to food intake. It will affect the activity and rate of cell membrane transport substances, affect its normal metabolism, and then affect the entire food web. The DPH790 Digital pH Sensor developed and produced by Daruifuno can monitor the pH value of surface water in real time, with long service life and high detection accuracy.

The significance of surface water conductivity measurement

Monitoring of conductivity values is essential for surface waters. Conductivity mainly measures the conductivity of water, and can reveal other related parameters, such as TDS, salinity, total ion concentration in the solution, etc. The main purpose of monitoring conductivity indicators in surface water is to monitor the total ion concentration in the water body. Contains the total amount of various conductive substances such as various chemicals, heavy metals, impurities, etc. Daruifuno DEC790 digital Online Conductivity Sensor can not only monitor the conductivity value, but also convert it into TDS and salinity values at the same time.

The significance of surface water dissolved oxygen measurement

In addition to being consumed by reducing substances such as sulfide, nitrite, and ferrous ions in normal water, dissolved oxygen in surface water is also consumed by the resoiration of microorganisms in the water and the oxidative decomposition of organic matter in the water by aerobic microorganisms. Therefore, dissolved oxygen is an important indicator for surface water monitoring and an indicator of whether the water body has the ability to self-purify. When the dissolved oxygen in surface water is close to the saturation value and algae reproduce vigorously, the dissolved oxygen content decrease. Pollution of water bodies by organic matter and reducing substances can reduce dissolved oxygen, which has a vital impact on the survival of aquatic organisms such as fish. When the dissolved oxygen is lower than 4mg/L, some fish will suffocate and die. When the dissolved oxygen content is lower than 0.5mg/L, anaerobic bacteria can breed, further deteriorating the water body. Therefore, the level of dissolved oxygen in surface water can reflect the degree of pollution of the water body, especially the degree of organic pollution. Daruifuno OPD790 online Dissolved Oxygen Sensor adopts the principle of fluorescence method and does not require reagents. It can quickly monitor the dissolved oxygen value of water quality and output the value via digital RS485.

The measurement significance of surface water turbidity
The level of turbidity value in surface water directly reflects the turbidity of the water body. The degree of turbidity is mainly caused by insoluble substances in the water. Insoluble substances include sediment, corrosive matter, phytoplankton and colloidal particles suspended in the water. While reducing turbidity, it also reduces bacteria, coliforms, viruses, cryptosporidium, iron, manganese, etc. in the water. High turbidity values in surface water will also affect the photosynthesis efficiency of plants in the water, thereby affecting the production of oxygen, resulting in a decrease in catalytic ability during the degradation process of decay organisms, further deteriorating the water body. Therefore, the turbidity measurement parameters in surface water are comprehensive indicators that reflect the degree of water pollution. The OPTU85 series Turbidity Sensor developed by Daruifuno has two options: low range and high range. Users can choose according to water quality conditions.
The significance of measuring temperature in surface water

Changes in surface water temperature, even relatively small temperature changes, can have significant negative impacts on aquatic wildlife, affecting the rate at which organisms grow and feed, as well as the timing and efficiency of their reproduction.

Routine surface water five-parameter analyzer

The MCC200 series of multi-parameter water quality analysis instruments developed and produced by Daruifuno can be connected to pH sensors, conductivity sensors, dissolved oxygen sensors and turbidity sensors at the same time, and monitor the temperature of water quality at the same time. Such a set of multiparameter equipment can monitor, display and output data at the same time without the need for multiple independent instruments, saving space and instrument costs. We also offer matching current and relay modules.

If you are interested in our products, please contact us. The above is an introduction to the five conventional parameters of surface water. Delfino company focuses on the R&D and production of water quality analysis instruments. Our measurement parameters include pH, ORP, conductivity, TDS, salinity, dissolved oxygen, COD, ammonia nitrogen, turbidity, chlorophyll, blue-green algae, residual chlorine, and chlorine dioxide. wait. Our main products include pH ORP analyzer, conductivity analyzer, turbidity analyzer, COD analyzer, dissolved oxygen analyzer, ammonium analyzer, chlorine analyzer, etc.