Shanghai Botuo Instrument Co., Ltd., on-site installation of pollution source monitoring

Shanghai Botuo Instrument Co., Ltd

Wang Yuzhang

Shanghai Botuo Instrument Co., Ltd. is a professional manufacturer of pollution source online detection instruments. Our products include five parameters: pH, conductivity, dissolved oxygen, residual chlorine, turbidity, water quality, online COD, ammonia nitrogen, total phosphorus, and total nitrogen. Four of them (online COD, ammonia nitrogen, total phosphorus, and total nitrogen) have obtained CCEP environmental protection certificates. And in recent years, it has been widely used for on-site pollution source detection.

On site monitoring of the installation situation in the station building is as follows:

System Description

*The design of this product enables it to have a low failure rate, low maintenance, low reagent consumption, and cost-effectiveness compared to similar products.

1- Select valve component: Select the timing of reagent sampling;

2- Measurement component: Reagents are implemented through a visual optoelectronic system Measurement has overcome the quantitative errors caused by wear of peristaltic pump tubes; Simultaneously achieving the use of trace reagents Quantitative, each dose is only1.5 milliliters greatly reduces the amount of reagents used.

3- Sample injection component: Peristaltic pump negative pressure suction, there is always an air buffer zone between the reagent and the pump tube to avoid corrosion of the pump tube;

4- Sealed digestion component: High temperature and high pressure digestion system accelerates the reaction process and overcomes the corrosion of equipment caused by the volatilization of corrosive gases in open systems;

5- Reagent tube: Imported modified PTFE transparent hose with a diameter greater than 1.5mm is used to reduce the probability of particle blockage in water samples.

electrical device

adoptPanasonic imports control components such as PLCs, reducing environmental interference and equipment failures.

Basic Principles

Water sample, potassium dichromate digestion solution, and mercuric sulfate (mercuric sulfate can eliminate the interference of chloride ions in water samples, as chloride ions can form a very stable reaction with mercury ions)HgCL）Heat the mixture of silver sulfate solution (silver sulfate added as a catalyst can more effectively oxidize linear fatty compounds) until16At 5 ℃, the color of organic matter in the solution will change after oxidation by dichromate ions. The analyzer detects this color change and converts it into COD value output. The amount of dichromate ions consumed is equivalent to the amount of oxidizable organic matter.

The reducing inorganic substances in water samples, such as nitrite, sulfide, and ferrous ions, will react with potassium dichromate, affecting the measurement results. The amount of potassium dichromate consumed by them will be recorded in the measurement results, making the measurement results higher.

technical indicators

Human computer interaction mode:LCD touch screen, Chinese display and command input;

Method basis: National standard GB11914-89 "Water Quality - Determination of Chemical Oxygen Demand - Potassium Dichromate".

2measurement range：0100 mg/L、0-500 mg/L、0-1500 mg/LThe0-5000mg/L

3. Indication error：not exceed±10%

4 Stability of indication:Not exceeding ± 10% within 24 hours

5 measurement cycles: The minimum measurement cycle is40Minutes, according to the actual water sample, can be5～120minbetweenModify the resolution time.

6 Sampling period: time interval（40~9999min adjustable) and whole point measurement mode.