Reactor used for determining corrosiveness judgment index of water quality and determination method

Abstract

The invention discloses a reactor used for determining a corrosiveness judgment index of water quality. The reactor comprises a cylindrical reactor, a stirrer and a plurality of hanging piece supporting frames, wherein the cylindrical reactor is fixedly arranged on an equipment base; an upper cover is arranged at the upper part of the cylindrical reactor; the hanging piece supporting frames are uniformly fixed on the inner wall of the cylindrical reactor along the peripheral direction; the stirrer is arranged in the cylindrical reactor and is driven by a speed adjustable motor fixed on the upper cover of the cylindrical reactor to rotate; a liquid level meter is arranged on one side of the outer part of the cylindrical reactor, a sampling hole is formed in the lower part of the other side of the cylindrical reactor, and an emptying pipe is arranged at the bottom of the cylindrical reactor; an exhausting hole and a nitrogen gas inlet pipe are arranged on the upper cover of the cylindrical reactor; and a gas pipe switch is arranged on the nitrogen gas inlet pipe. The invention further discloses a determination method for the corrosiveness judgment index of the water quality. The determination method comprises three parts of carrying out a hanging piece reaction test, establishing an iron releasing speed model and extracting the corrosiveness judgment index. The device and method disclosed by the invention are simple to operate; the device has a small volume; and the corrosiveness of different water qualities of local places can be accurately reflected, and the device and method are easy to popularize and have strong applicability.

Description

technical field [0001] The invention relates to a method for judging the chemical stability of water quality in a water supply pipe network and a matching reactor, in particular to a method for judging the corrosiveness of water quality to iron pipes in a water supply pipe network for controlling iron release and a supporting reactor, belonging to drinking Water treatment technology field. Background technique [0002] On the premise of ensuring that the effluent water quality of the water supply plant meets the standard, further ensuring the chemical stability of the factory water in the municipal pipe network has gradually become the focus of research in the field of water supply treatment. The most intuitive harm caused by the unstable water quality of the pipe network is the phenomenon of "yellow water". The daily work and life of urban residents, and the normal production and operation of industrial enterprises. Therefore, judging and adjusting the chemical stability ...

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Problems solved by technology

Among them, LSI and RSI are defined based on calcium carbonate precipitation, but this theory does not take into account the induction of crystallization by suspended impurities and corrosion products in water, nor does it take into account the inhibition and dispersion of natural scale inhibitors on crystal growth; CCPP Only two processes of calcium carbonate dissolution and precipitation are considered, and the factors with less influence in these two processes are ignored; LR only considers corrosion ions (sulfate and chloride ions) and corrosion inhibitor ions (bicarbonate), Calcium ions, nitrate ions, etc. that have an impact on pipeline corrosion are not considered

[0004] At present, the water supply pipelines in use in my country are mainly made of iron pipes. Based on the defects of the currently mainly used judgment index system, and no corresponding judgment index has been proposed for iron pipes, when judging the corrosiveness of water quality to iron pipes There is no effective method for judging

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