UV254 Digital Online COD sensor probe For wastewater

In the process of industrialization, large amounts of wastewater are discharged into the environment, causing serious pollution to water resources and the ecological environment. Chemical oxygen demand (COD) is one of the important indicators to measure the organic matter content and pollution degree in wastewater. Many organic compounds dissolved in water absorb UV light. Therefore, by measuring the degree of absorption of 254nm wavelength ultraviolet light by these organic substances, the content of dissolved organic pollutants in water can be accurately measured. The greater the chemical oxygen demand, the more serious the water body is polluted by organic matter. Industrial wastewater usually contains a large amount of organic matter, including chemical plants, pharmaceutical plants, food processing plants and other industries. These organic matter will decompose in the water body, consume dissolved oxygen, cause water body hypoxia, and form high concentrations of COD due to the degradation of organic matter. The COD value of these wastewater must be monitored when discharged. The COD351 online digital Chemical Oxygen Demand Sensor developed and produced by Daruifuno uses ultraviolet absorption method, which can continuously monitor the COD value in water. It has automatic cleaning wiper, digital RS485 interface, and supports Modbus communication protocol. This Optical COD Probe does not need to consume reagents or wait for a long time, and can display values in real time.

Specification

COD wastewater treatment methods:
Removal of COD by coagulation: Chemical coagulation can effectively remove organic matter in wastewater and reduce COD to a large extent. The coagulation process is used to add flocculants and utilize the adsorption and bridging of the flocculants to compress the electric double layer, causing the colloids and suspended matter in the water to destabilize, collide, and condense into flocs, and then use sedimentation or air flotation processes to form flocs. Particles are separated from the water to achieve the purpose of purifying the water body.
Biological method to remove COD: Biological method is a wastewater treatment method that relies on microbial enzymes to oxidize or reduce organic matter to destroy its unsaturated bonds and color groups to achieve the purpose of treatment. In recent years, microorganisms have fast reproduction speed, strong adaptability and low cost, and have been widely used in the treatment of scouring wastewater.
Electrochemical COD removal: The essence of electrochemical wastewater treatment is to directly or indirectly use electrolysis to remove pollutants in the water, or to convert toxic substances into non-toxic and low-toxic substances.
Micro-electrolysis method to remove COD: Micro-electrolysis technology is currently an ideal method for treating high-concentration organic wastewater, also called internal electrolysis method. The invention uses micro-electrolytic materials to fill wastewater under the condition of no electricity, and generates a potential difference of 1.2V by itself to electrolyze the wastewater to achieve the purpose of degrading organic pollutants.
Absorption method to remove COD: activated carbon, macroporous resin, bentonite and other active adsorption materials can be used to adsorb and treat particulate organic matter and color in sewage. Can be used for pre-treatment to reduce COD which is easier to handle.

By using COD sensors to monitor the COD value of wastewater, the changing trend of water quality COD can be quickly judged and data support can be provided for wastewater treatment. Operators can also adjust the operating parameters of wastewater treatment equipment in time to achieve the best wastewater treatment effect. In addition, through the real-time online monitoring of the COD analyzer, problems can be discovered in advance and corresponding measures can be taken to avoid unexpected situations during the wastewater treatment process. By analyzing the monitoring results, we can understand the changing trends and peak periods of organic matter concentration, thereby rationally arranging the use of equipment and wastewater treatment time, improving treatment efficiency, and saving related resources and costs. If you are interested in COD sensors, please contact us. 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. In addition to ORP sensors, our main products include pH ORP analyzer, conductivity analyzer, turbidity analyzer, COD analyzer, dissolved oxygen analyzer, ammonium analyzer, chlorine analyzer, etc.