Pollution Source Water Quality Online Monitoring System

The self-developed online monitoring system for water pollution sources has complete independent intellectual property rights and is suitable for emission monitoring and process monitoring in various harsh environments and working conditions, targeting the characteristics of wastewater discharged by industries such as urban sewage treatment, hospitals and industrial enterprises.

Online Monitor for Water Quality's Chemical Oxygen Demand

It utilizes the principle of potassium dichromate high-temperature digestion and spectrophotometry. After undergoing pretreatment, the water sample is oxidized by potassium dichromate under high temperature and high pressure conditions. The Chemical Oxygen Demand (COD) content is then quickly determined using a spectrophotometer. The principle of the instrument complies with standards such as the "Water quality - Determination of the chemical oxygen demand - Dichromate method" (HJ 828-2017) and the "Water quality－Determination of the chemical oxygen demand－Fast digestion-Spectrophotometric method" (HJ/T 399-2007). This instrument meets the requirements of the "Technical specifications and test procedures for water quality on-line automatic monitoring equipment of chemical oxygen demand (CODCr)" (HJ 377-2019).

Ammonia Nitrogen Water Quality Online Monitor

The C310 Ammonia Nitrogen Water Quality Online Monitor, independently developed by BESCIENT TECHNOLOGIES, conforms to the "Technical specifications and test procedures for water quality on-line automatic monitoring equipment of ammonia" (HJ 101-2019) set by the Ministry of Ecology and Environment of the People's Republic of China. It has also obtained the China Environmental Protection Product Certification Certificate issued by the China Association of Environmental Protection Industry (Beijing) Certification Center.

Total Phosphorus Water Quality Online Monitor

The C310 Total Phosphorus Water Quality Online Monitor, independently developed by BESCIENT TECHNOLOGIES, is a product that measures the total phosphorus content in water based on the colorimetric method. The method involves the digestion of the sample with potassium persulfate (or nitric acid-perchloric acid), which converts all phosphorus into orthophosphate. In an acidic medium, orthophosphate reacts with ammonium molybdate in the presence of antimony salt to form phosphomolybdic acid. This is immediately reduced by ascorbic acid to produce a blue complex. The absorbance of this complex is directly proportional to the concentration of total phosphorus.

Total Nitrogen Water Quality Online Monitor

Method Principle: It involves the conversion of nitrogen-containing compounds in the sample into nitrate by an alkaline potassium persulfate solution at 120-124℃. The absorbances at wavelengths of 220nm and 275nm, denoted as A220 and A275 respectively, are measured using ultraviolet spectrophotometry. The total nitrogen content (expressed as N) is proportional to the corrected absorbance A, which is calculated using a specific formula.

Total Lead Water Quality Online Monitor

The specific chromogenic agent reacts with lead ions under alkaline conditions to form a colored complex with characteristic absorption at a specific wavelength. The concentration of the complex is proportional to the concentration of Pb ions. The complex is then measured by a precision spectrometer to accurately measure the concentration of lead ions in the water.

Total Cadmium Water Quality Online Monitor

It is based on the colorimetric method for measuring the total cadmium content in water. After digestion, the sample is converted into divalent cadmium ions. These ions react with the color reagent in an alkaline environment to form a colored complex. The absorbance of this complex is measured at a certain wavelength, and the concentration of cadmium is calculated using the correction factor stored in the analyzer.

Total Arsenic Water Quality Online Monitor

It is based on the colorimetric method for measuring the total arsenic content in water. The analyzer operates by using a specific arsenic color reagent that reacts with arsenic ions in an acidic medium to form a stable complex. This complex absorbs light at a specific wavelength. By measuring its absorbance, the arsenic content in the water sample can be calculated. This method has good resistance to interference. Common metal ions in water do not interfere with the determination, especially phosphorus and silicon.

Hexavalent Chromium Water Quality Online Monitor

Under acidic conditions, hexavalent chromium reacts with the color reagent diphenylcarbazide to form a stable colored compound. This compound absorbs light at a specific wavelength. By measuring its absorbance, the content of hexavalent chromium in the water sample can be calculated. The method has excellent resistance to interference. Low concentrations of metal ions (such as iron, copper, and lead) present in the sample do not interfere with the measurement.

Total Copper Water Quality Online Monitor

After undergoing digestion, redox, and other reactions, a masking agent is added to the water sample to mask certain interfering factors. A color reagent is then added to form a stable colored complex. The absorbance of this complex at a specific wavelength is measured, and the concentration of copper in the water sample is calculated based on this measurement.

Total Nickel Water Quality Online Monitor

After the water sample is digested, the nickel ions in the sample react with the color reagent to form a colored, stable, soluble complex. The concentration of nickel is then calculated through photometric measurement at a specific wavelength and computational processing.

Total Chromium Water Quality Online Monitor

After digestion, all trivalent chromium in the sample is oxidized to hexavalent chromium. It reacts with the color reagent under acidic conditions to form a stable colored compound, which is then spectrophotometrically measured at its specific absorption wavelength. The total chromium content in the water sample can be calculated by measuring its absorbance.