A water supply network stability index system and its evaluation method

Abstract

The invention belongs to the technical field of water supply detection and provides a water supply pipe network stability index system and an evaluation method thereof. The evaluation method includes two parts: a water quality stability evaluation index system and a pipe network surface physical and chemical stability index system. The water quality stability evaluation index system includes total alkalinity, calcium hardness and CCPP; the physical and chemical stability index system of the pipe network surface includes the total amount of pipe scale, α-FeOOH, β-FeOOH, Fe 3 o 4 . The application of this invention will more comprehensively and effectively evaluate the stability of the water supply pipe network, accurately predict the health status of the pipe network, and help to more comprehensively guide the operation and maintenance of the water supply pipe network, such as water quality assurance, pipeline renewal and maintenance.

Description

technical field [0001] The invention belongs to the technical field of water supply detection and provides a water supply pipe network stability index system and an evaluation method thereof. Background technique [0002] During the transportation of drinking water in the pipe network, due to pipe wall corrosion and other reasons, "yellow water" and other phenomena will occur, resulting in substandard water quality and affecting user experience. The occurrence of the above phenomenon is related to the chemical stability of the water quality. Therefore, in the operation process of major water companies, the occurrence of the above phenomenon is generally judged by the chemical stability of the water quality. In recent years, the operation experience of the water supply pipe network shows that the physical and chemical stability of the pipe wall of the water supply pipe network also affects the occurrence of "yellow water" and other phenomena. In addition, the physical and ch...

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Problems solved by technology

[0016] (1) The water quality stability index system of the water supply network and its application are relatively mature at present, but its main defect is that it only pays attention to the influence of the water quality itself on the stability of the pipe network scale, ignoring the stability of the pipe network scale itself

Therefore, it can only be used as a reference in the application of the index system, and it is difficult to effectively evaluate the stability or health of the water supply network.

[0017] (2) The surface physical and chemical stability index system of the water supply pipe network is not yet mature, mainly due to the lack of sufficient actual pipeline data for statistical analysis and evaluation verification

[0018] (3) Lack of a comprehensive stability evaluation method that couples the above two methods

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