A tap water automatic quantitative sampling device and sampling method for detecting cryptosporidium and giardia

Abstract

The invention relates to an automatic quantitative tap water sampling device and method for detecting cryptosporidia and Giardia lamblia. With the method, samples of cryptosporidia and Giardia lamblia are automatically collected in the flowing process of tap water; since the quantities of cryptosporidia and Giardia lamblia in 100 L of water are needed in detection of cryptosporidia and Giardia lamblia, a tap water automatic quantifying controller is such configured that sampling is stopped when a water volume reaches 100 L; the samples are enriched in a cryptosporidium and Giardia lamblia detection and enrichment filter core; after sampling, the filter core is sealed and taken back for detection. Thus, that 100 L of water is taken back from each sampling point in traditional detection is avoided; labor intensity is reduced; and detection accuracy is improved. The device is simple in structure and convenient, labor-saving and time-saving to operate, so influence of fatigue of operation personnel on operation during sampling is avoided; the whole process is stable; the device and method overcome the problem of difficulty in accurate controlling of a sampling water volume caused by closing of a switch after artificial observation of scales of a water meter; and result quality is reliable.

Description

technical field [0001] The invention belongs to the technical field of sanitation and safety detection of public drinking water, and in particular relates to an automatic quantitative sampling device for tap water and a sampling method for detecting cryptosporidium and giardia. Background technique [0002] Water is necessary for the physiological functions of the human body. Water is the basis for human survival and social and economic development. Polluted drinking water can be harmful to health and cause diseases, and the supply of qualified drinking water plays an important role in the prevention and control of diseases. High-quality and sufficient domestic water can not only prevent diseases, but also improve people's quality of life. [0003] Water is the source of life and is closely related to people's daily life. Once drinking water is accidentally polluted, it will affect a wide range, and a large number of cases will appear in a short period of time, which will ...

AI Technical Summary

Problems solved by technology

The reason is mainly due to the cumbersome collection of water samples for the detection of Cryptosporidium and Giardia in tap water, which is not only time-consuming, laborious, but also heavy physical labor, and the quality of the sampling process cannot be guaranteed

[0005] There are two original methods, one needs to collect 100 liters (200 catties) of source water and 100 liters of factory water at the sampling point of each water plant, and transport them back to the laboratory for concentration and enrichment. The enrichment process of each 100 liters of water requires The time is 3 to 4 hours. The daily regular inspection needs to monitor multiple sampling points. The workload is very heavy and unrealistic. Another method is to use on-site sampling and enrichment to treat 100 liters of water, which requires the cooperation of multiple people at the same time and requires a special person. Check the water meter to prevent the waterway from falling off and disconnecting. It is often impossible to prevent it. It is necessary to have a special person to support the filter to keep it vertical and keep it in this state for several hours. The work is difficult, time-consuming and laborious, and the quality of sampling is difficult to guarantee.

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