Chemical Oxygen Demand (COD) is one of the core indicators for assessing the degree of organic pollution in water quality monitoring. It can quickly reflect the total amount of reducing substances (mainly organic matter) in water. It, together with BOD5, constitutes an important basis for judging the biodegradability of water samples and the effectiveness of wastewater treatment processes.

This article systematically introduces the definition of COD, determination principles, national emission standards, and how to achieve efficient and stable continuous detection through online monitoring technology. It focuses on recommending NiuBoL NBL-WQ-COD integrated online COD sensor, which adopts double wavelength ultraviolet absorption method, providing a reagent-free, fast-response reliabl···

COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand) are core indicators for assessing organic pollution in water quality monitoring and wastewater treatment. COD reflects the total amount of chemically oxidizable organic matter and some inorganic reducing substances in water. BOD reflects the oxygen required by microorganisms to degrade organic matter.

Ammonia Nitrogen refers to the total nitrogen in water existing in the form of free ammonia (NH₃, non-ionic ammonia) and ammonium ions (NH₄⁺). It is one of the important parameters in water quality monitoring and wastewater treatment, directly related to eutrophication control, aquatic organism protection and wastewater treatment process optimization.

This article discusses the definition, properties, toxicity, sources and online monitoring solutions of ammonia nitrogen, with a focus on NiuBoL NBL-NHN-406 integrated online ammonium nitrogen sensor. The sensor adopts ion selective electrode method, combined with RS-485 Modbus RTU protocol and automatic temperature compensation, providing stable and reliable continuous monitoring data for complex···

Comprehensive summary of 12 production and industrial water quality testing execution standards. From GB8978 sewage discharge to GB1576 boiler water quality, in-depth analysis of NiuBoL digital water quality online monitoring system selection logic and technical parameters in different scenarios. Help system integrators and environmental contractors deploy full-scenario, multi-dimensional complian···

Detailed explanation of 9 core indicators for domestic wastewater monitoring, including COD, BOD, SS, ammonia nitrogen, total phosphorus, total bacteria, coliform, pH and phosphate. In-depth analysis of how NiuBoL digital water quality monitoring solution integrates via RS-485 bus to help system integrators achieve compliant discharge and automated control of domestic wastewater treatment.

The importance of water quality testing in aquaculture is increasingly prominent. With the promotion of intensive and high-density farming models, water environment stability directly affects the growth rate, survival rate and product quality of fish, shrimp and crab. NiuBoL aquaculture dedicated sensor series provides reliable data support for system integrators and aquaculture engineering compan···

This article analyzes aerobic activated sludge method, biochemical wastewater treatment, protein recovery process and clean-dirty diversion technology for slaughterhouse wastewater treatment, providing a full-process solution from equipment selection to compliant discharge. NiuBoL focuses on slaughter industry wastewater treatment system engineering to help enterprises achieve environmental compli···

This article deeply analyzes core technical methods to improve the accuracy and stability of sewage water quality monitoring, covering monitoring point layout strategies, laboratory quality control systems, online monitoring system selection and pretreatment technologies. NiuBoL provides professional water quality monitoring system integration services to help sewage treatment plants and pollutant···