Preparation device and batching control system for disinfectant for building domestic hot water

Abstract

The invention discloses a preparation device and a batching control system for a disinfectant for building domestic hot water, and belongs to the technical field of water quality guarantee of buildingdomestic hot water. The preparation device and the batching control system comprises a domestic hot water inlet pipe interface, a flow meter, an electromagnetic valve, a silver ion generator, a drugstorage tank, a circulating pump, a metering pump, a drug injection valve and a domestic hot water outlet pipe interface. When the disinfection by silver ions is carried out, according to a numeric value of the flow meter, silver ions are prepared in an online manner by the silver ion generator, and are dosed into the domestic hot water in the online manner; a disinfection effect is ensured; the hot water is maintained to contain an allowance, which is 0.02mg / L to 0.05mg / L, of the silver ions. The silver ion generator, the drug storage tank and the circulating pump circularly run, and are usedfor preparing a high-concentration silver-ion disinfectant. The metering pump, a drug adding pipe, the electromagnetic valve and the drug injection valve are connected in sequence; the disinfectant in the drug storage tank can be quantitatively dosed into the domestic hot water. According to the preparation device and the batching control system, a proper disinfection way can be selected; a microbe in the domestic hot water is guaranteed to be effectively killed, and the biological and chemical safety of a building domestic hot water system is ensured.

Description

technical field [0001] The invention relates to the technical field of water quality assurance for building domestic hot water, in particular to a disinfectant preparation device and a dosing control system for building domestic hot water. Background technique [0002] The domestic hot water system is an important part of the building water system. The domestic hot water in the building is mainly used for bathing, washing, laundry, kitchen and other aspects in the building. It has direct contact with the human body. The water quality of domestic hot water is safe and water quality Safeguards are an area that has received particular attention in recent years. The hydraulic retention time of the domestic hot water system is very long, and the higher temperature also accelerates the decay rate of residual chlorine. Therefore, the problem of low residual chlorine or even no residual chlorine is common, which is conducive to bacteria and pathogenic microorganisms on the wall of t...

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Problems solved by technology

Thermal disinfection has a good effect on the inactivation of microorganisms, but it can only be used regularly, and there are certain safety hazards

Chlorine, chloramine, ozone, and chlorine dioxide have good microbial inactivation effects and have continuous disinfection effects, but the attenuation rate in hot water is very fast, and increasing the dosage of disinfectants will cause the generation of disinfection by-products A significant increase

Therefore, conventional chlorine, chloramine, ozone, chlorine dioxide, etc. cannot be effectively applied to the disinfection process of hot water

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