Scale inhibition control method adopted in circulating water operation process

Abstract

The invention discloses a scale inhibition control method adopted in a circulating water operation process. According to the method, five groups of circulating water scaling judgment formulae are proposed, and compared with the prior art, the circulating water scaling tendency can be judged more accurately and the effect is better when the method is implemented by a circulating water system adopting urban recycled water and various kinds of waste water as circulating water supplement water; according to the method, phenolphthalein alkalinity and conductivity of the circulating water are further taken as circulating water control indexes, the defects of the prior art are overcome, and the circulating water is prevented from scaling more accurately and more effectively; circulating water limiting concentration ratio, circulating water limiting hardness, circulating water limiting calcium ions, circulating water limiting phenolphthalein alkalinity, circulating water limiting methyl orange alkalinity, circulating water limiting pH value and circulating water limiting conductivity acquired through tests are taken as upper limit of in-site actual circulating water control indexes, errors caused by single chloridion control are eliminated, safe operation of the circulating water system is realized, and the problem of standard exceeding of the concentration ratio or scaling is solved.

Description

technical field [0001] The invention belongs to the technical field of circulating water control, and in particular relates to a scale inhibition control method in the running process of circulating water. technical background [0002] Circulating water is an important cooling system for industrial enterprises. The stability of circulating water operation has a great impact on industrial enterprises, and the scaling of circulating water system is the main problem faced by the circulating system. In the past, since the supplementary water of circulating water was generally ground water or surface water, its scaling tendency was generally judged by the difference between the concentration ratio of chloride ions and the alkalinity concentration ratio of methyl orange or the difference between the concentration ratio of chloride ions and the concentration ratio of hardness. The control of chlorine ion is generally controlled by the concentration ratio of chloride ions as an inde...

AI Technical Summary

Problems solved by technology

In the past, since the supplementary water of circulating water was generally ground water or surface water, its scaling tendency was generally judged by the difference between the concentration ratio of chloride ions and the alkalinity concentration ratio of methyl orange or the difference between the concentration ratio of chloride ions and the concentration ratio of hardness. The control of chlorine ion is generally controlled by the concentration ratio of chloride ions as an index; and now due to the huge pressure of water saving and emission reduction, most of the supplementary water for circulating water has used urban reclaimed water, mine water, various waste water and other water bodies. The water quality of these water bodies is poor. Chloride ions fluctuate greatly, and the above method can no longer accurately judge the scaling tendency of circulating water and control the scaling problem of circulating water

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