product overview

DL2001B type CODc_rThe automatic online analyzer is one of the environmental monitoring instruments with independent intellectual property rights developed by Professor Hong Lingcheng of Jiangsu Delin Environmental Protection Instrument Co., Ltd. This product has 8 core technologies independently developed by Delin, and all indicators meet the national standard. Since its inception, it has received widespread attention and praise from industry professionals, and has achieved good social effects.

The instrument can directly measure tap water, Rivers and Lakes water, industrial sewage, and high concentration wastewater before water treatment (the instrument must be customized to measure water bodies with chloride ions greater than 20000mg/L). It can be widely used in water environment automatic monitoring stations, sewage treatment plants, water treatment plants, sewage monitoring points, regional water boundary points, water quality analysis rooms, and environmental regulatory agencies at all levels to monitor the water environment.

Basic principles

The sample, oxidant (potassium dichromate), catalyst (silver sulfate), and masking agent (mercury sulfate) were added to a digestion colorimetric cell through a sequential injection valve and mixed together. High temperature (175 ℃) digestion reduced hexavalent chromium ions to trivalent chromium ions, which were detected by spectrophotometry and converted to CODc_rValue.

Technical Parameter

★Ministry of Water Resources Science and Technology Development Fund

★National SME Innovation Fund Project Products