Scale inhibitor evaluation method and device

Abstract

The invention provides a scale inhibitor evaluation method, which relates to the field of water treatment. The method comprises the steps that the water quality of inflow water is detected, the water quality index of the inflow water is obtained, and at least one target scale inhibitor suitable for the water quality index is determined according to the water quality index; then, concentrated water generated by treating the inflow water through a nanofiltration system is obtained as test raw water, and the test raw water reacts with experimental samples which correspond to the experimental schemes and contain different concentrations and / or types of target scale inhibitors under preset reaction conditions to prepare experimental water samples corresponding to the experimental schemes; and evaluation parameters of the experimental water sample of each experimental scheme are thus obtained, and the adaptability of the experimental sample corresponding to each experimental scheme in the inflow water treatment is evaluated according to the evaluation parameters. The embodiment of the invention is used for solving the problems that conventional scale inhibitor evaluation methods are one-sided, extremely few scale inhibitor evaluation methods suitable for drinking water treatment are involved, and effective evaluation cannot be given in objective use.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a scale inhibitor evaluation method and device. Background technique [0002] Drinking water sources are divided into groundwater and surface water (rivers, lakes, reservoirs). The water quality of different water sources varies greatly. "The treated water can no longer meet people's water quality requirements for drinking water. [0003] In the existing technology, waterworks often improve the water quality of produced water by adding advanced treatment processes such as membrane separation technology. Nanofiltration membrane treatment process has gradually attracted people's attention because of its stable water quality and high water output efficiency. Among them Nanofiltration membranes can intercept medium and small molecular weight organic pollutants in water, while removing calcium, magnesium ions, sulfates and nitrates, etc., effectively reducing water hardness. However, ...

AI Technical Summary

Problems solved by technology

However, conventional antiscalant evaluation methods such as static antiscaling method and bubbling method are mostly applicable to industrial water such as circulating water and boiler water. The scale inhibitor evaluation method for drinking water treatment, and the conventional scale inhibitor evaluation method focuses on the chelation level of the scale inhibitor, which is relatively one-sided and cannot be effectively evaluated in objective use.

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