Online monitoring equipment (online analyzers)

The use of water in various industries is usually unavoidable. Every industry uses water according to its production process, and as a result, this water is contaminated with various substances during this operation. The type and amount of industrial water pollution is different for each industry. For example, dairy industry wastewater, which contains large amounts of biological contaminants, is different from metal industry wastewater with a high concentration of chemical contaminants. Therefore, it is necessary to choose the right parameter in the first place to monitor the condition of the factorys wastewater output. In the next step, the desired measurement range should be determined by taking into account the general state of the processes of the desired industry. In addition to these cases, in the installation of online water and wastewater analyzers, the environmental conditions of the installation site and the facilities required for the installation, such as electricity and the coverage of various information transmission networks, are decisive. Different industries are categorized in different categories such as textile, dairy, pharmaceutical, packaging, paper making, food, entertainment, metal, automobile manufacturing, etc. In general, the grouping of pollutants in these industries can be divided into chemical, biological and physicochemical pollutants.

There are online water and wastewater analyzers in different models and methods in the world. Each method has its own advantages and disadvantages that should be considered when designing online water and wastewater analyzers. It should be mentioned here that the purpose of installing an online monitoring station (online water and wastewater analyzers) is primarily to know the general trend of water and wastewater quality, and online measurement equipment necessarily requires sampling and performing detailed tests. does not exclude But it is possible to detect the number of presence of the laboratory in the place at the required time, and if the condition of the outgoing pollutants has not changed much, there will be no need to take samples. There are different methods for installing these systems in addition to different methods of parameter analysis. 

Online water and wastewater analyzers usually exist in our country in two types: submerged and extractive. In the online analyzers of water and wastewater absorption or in-situ, measuring sensors are all placed directly inside the water. In extractive models, the water sample is analyzed after being pumped into a cabinet containing various detectors. Both systems have advantages and disadvantages that should be chosen according to the situation and conditions of each project. Usually, extractive model online water analyzers are used in drinking water industries, which have less suspended particles and turbidity compared to online wastewater analyzers. In addition to this, for online water and wastewater analyzers installed with submerged or in-situ systems, a sensor with a resistant body material and suitable automatic washers should be installed. If you need guidance regarding the selection of online water and wastewater analyzers, either submerged or extractive, please contact Kashefan Nilfam Company. The general parameters of the following list can be measured according to the advances in technology:

Chemical Oxygen Demand (COD)

Total Organic Carbon (TOC)

Dissolved Organic Carbon (DOC)

Nitrate (NO3)

Nitrite (NO2)

Phenol, Glycol, BTEX, Phenol, Glycol, Benzene, Toluene,

Phosphate (PO4) (phosphate


Ammonia (NH4)

Chlorine (Free, Residual, Total)

Total Suspended Solids (TSS)

Total Dissolved Solids (TDS)

Electrical Conductivity (EC)


Oxygen Reduction Potential (ORP) the reduction potential of dissolved oxygen

Oil in Water (Refined Oil, Crude Oil) FOG oil, fat and oil

Chlorophyll (Chol)

Dissolved Oxygen (DO)


According to paragraph b of article 091 of the law of the fifth development program, in order to reduce polluting and destructive factors of the environment, all large industrial and non-industrial units are required to take action and result within the framework of sampling and measurement of pollution and destruction of the environment. Submit a statement to the Environmental Protection Organization. According to this resolution, the units that have the ability and necessity to install and set up real-time and continuous (online) monitoring systems must install and set up the aforementioned systems by the end of the third year of the program. Violators are subject to Article (31) of the law on how to prevent air pollution. The units must send the work progress report to the general administration and the monitoring office every three months.