Water quality on-line monitoring device based on circulating water chemical polymer activity analysis

Abstract

The invention discloses a water quality on-line monitoring device based on circulating water chemical polymer activity analysis. The water quality on-line monitoring device comprises a core control unit, a sample analysis unit, a reagent sampling unit and a power driving unit, wherein a core controller and a GPRS (general packet radio service) remote monitoring module are arranged in the core control unit; the sample analysis unit comprises a chemical reaction module, an optical measurement module and a sample sampling module; the chemical reaction module comprises a reaction cuvette; the bottom of the cuvette is provided with a liquid discharging valve; the optical measurement module comprises a light source emitting and receiving device; the sample sampling module comprises a sampling valve; a dosing device is arranged under the sampling valve; the reagent sampling unit comprises a multiposition valve, an analytical reagent A, an analytical reagent B, cleaning liquid, standard liquid and an air exhaust passage; the power driving unit comprises a power driving pump; the multiposition valve, the sampling valve, the liquid discharging valve, the optical measurement module and the power driving pump are electrically connected with the core controller; the reagent sampling unit and the sample analysis unit are connected through the multiposition valve.

Description

technical field [0001] The invention belongs to the technical field of industrial water treatment, and in particular relates to an online water quality monitoring device based on the activity analysis of circulating water pharmaceutical polymers. Background technique [0002] At present, the commonly used online detection and control of circulating cooling water quality in China mainly includes flow ratio plus concentration multiple type water treatment chemical dosing equipment, fluorescent tracer online control water treatment chemical dosing equipment and total phosphorus online control water treatment chemical dosing equipment three mode. [0003] Among them, the flow rate plus concentration multiple type water treatment chemical dosing equipment is the earliest automatic dosing mode. According to the theoretical data such as circulating water evaporation, sputtering, and sewage discharge, the online monitoring instruments are appropriately added to calculate the dosing ...

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Problems solved by technology

[0004] Fluorescent tracer online control water treatment agent dosing equipment, this automatic dosing mode has been represented by Nalco 3DTRASAR in the United States, this device theoretically mixes evenly by adding fluorescent agent in a certain proportion to water treatment agent or through molecular link Connect the fluorescent agent with the water treatment agent, put it into the circulating water device, and then use the fluorescence detector to detect the content of the fluorescent agent in the circulating water, calculate the content of the water treatment agent, control the dosage, and achieve the purpose of automatic dosing, but the disadvantages of this method The half-life of the fluorescent tracer and the water treatment agent is different, which will cause detection errors. In addition, the water treatment device has a cooling tower, and there are fillers that will absorb the fluorescent agent and water treatment agent, which will also cause measurement errors, making it difficult to truly reflect the circulating water. real dose concentration

In addition, the fluorescent agent is a non-performance additive, and the later cost is relatively high, especially the molecular link requires a special process, which will increase the water treatment and cost.

[0005] Total phosphorus online control water treatment agent dosing equipment, although the online analysis of total phosphorus belongs to the main component of the direct analysis agent, but it can only analyze and control the phosphorus-based agents, and the online analyzer has a complex structure, cumbersome reagent configuration, and a large amount of daily maintenance and other disadvantages

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