In-situ on-line monitoring method for ultraviolet light transmittance

Abstract

The invention discloses an in-situ on-line monitoring method for ultraviolet light transmittance, and relates to on-line ultraviolet light transmittance monitoring methods. The in-situ on-line monitoring method comprises the following steps: I, mounting an ultraviolet light intensity meter, and right aligning the signal receiving window of the ultraviolet light intensity meter to one ultraviolet lamp tube inside an ultraviolet reactor; II, measuring the distance value d between the signal receiving window of the ultraviolet light intensity meter and the surface of an ultraviolet sleeve surfaceof the ultraviolet lamp tube to which the signal receiving window is right aligned; III, feeding clean water of which the UVT (Ultraviolet Transmittance) is greater than or equal to 95% and the turbidity is less than or equal to 3NTU (Number of Transfer Units) through the ultraviolet reactor, and recording the read I0 of the ultraviolet light intensity meter; IV, feeding water to be tested through the ultraviolet reactor, and recording the read I of the ultraviolet light intensity meter; V, calculating the UVT according to an equation as shown in the specification. The method has the advantages of being simple and convenient to operate, easy to achieve, high in detection precision, rapid in detection speed, short in detection time and the like.

Description

technical field [0001] The invention relates to an on-line monitoring method for ultraviolet light transmittance. In detail, it is simple, convenient, easy to implement, high in detection accuracy, fast in detection speed, and short in time; it can truly reflect the actual absorption of ultraviolet light by water quality, and achieve The invention relates to an in-situ on-line monitoring method for real-time in-situ on-line detection of ultraviolet light transmittance by using an ultraviolet reactor with multi-band ultraviolet light. Background technique [0002] We know that ultraviolet reactors are widely used in the fields of drinking water disinfection, photochemical catalytic treatment of slightly polluted water, and ballast water treatment. The intensity of ultraviolet light directly determines the treatment effect, and different water qualities have different degrees of absorption of ultraviolet light. If this absorption characteristic is not timely and accurately mon...

AI Technical Summary

Problems solved by technology

Since different wavelengths of ultraviolet light are absorbed in different degrees by the same water quality, the transmittance of the same water quality to different wavelengths of ultraviolet light is as follows: figure 1 As shown, for the ultraviolet reactor using multi-band ultraviolet light, this measurement method cannot truly reflect the actual absorption of ultraviolet light by water quality, let alone realize in-situ online real-time detection

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