JPS62132142A - Sampling apparatus - Google Patents

Abstract

PURPOSE:To reduce the time from sampling to analysis, by arranging a condensation vessel, a hollow filamentous filter and an integrating flow rate and the like to allow the sampling and the condensation of a liquid to be measured simultaneously. CONSTITUTION:A hollow filamentous film filter 12 is arranged in a condensation vessel 1 and a water to be measured flows into the vessel 1 through a valve 3. A solution passing through the filter 2 is made to pass through an integration flow meter 4 on the downstream side and then discarded. Then, the water being measured enters the vessel 1 and insoluble solid material is not allowed to pass when passing the filter 2 to be condensed in the vessel 1. Then, the water passage with the filter 2 by the flowmeter 4 is read out and the degree of condensation in the vessel 1 is calculated. In this manner, upon the end of the condensation, the vessel 3 is closed and the flowmeter 4. Then, the vessel 1 alone is removed and carried to an analysis chamber, where an upper lid is removed and the concentrate is taken out for measurement. This can reduce the time from the sampling to the analysis.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sampling device for the purpose of analyzing insoluble solids suspended in water in a container such as a tank.

[Technical background of the invention and its problems] Currently, sampling of insoluble solids in water in a tank is performed as follows. Namely.

■Open the tank manhole and collect a certain amount of water to be measured.

■Collect a certain amount of water to be measured from the drain valve of the tank.

Depending on either.

Therefore, when analyzing insoluble solids, if the concentration of the insoluble solids is low, a large amount of water to be measured must be sampled, concentrated, and measured.

In conventional sampling, as described above, it is necessary to collect a large amount of water to be measured, and therefore a container is required to store the large amount of sampled water to be measured, even if only temporarily. Further, concentration requires a lot of time and effort.

[Object of the Invention] The present invention has been made based on the above-mentioned circumstances, and is a method for collecting water to be measured for the purpose of measuring the concentration of insoluble solids suspended in water in a container such as a tank. A sampling device for concentrating insoluble solids is provided.

[Summary of the Invention] The sampling device of the present invention includes a concentration vessel connected to a liquid source to be measured via a valve, a hollow fiber membrane filter disposed inside the concentration vessel, and a solution that has passed through the hollow fiber membrane filter. It is characterized by having an integrating flowmeter that collects the flow rate and measures the flow rate.

[Embodiment of the Invention] In FIG. 1, a hollow fiber membrane filter 2 is disposed in a concentration vessel 1, and water to be measured flows into the concentration vessel 1 via a valve 3. The solution that has passed through the hollow fiber membrane filter 2 is discarded after passing through an integrating flowmeter 4 on the downstream side. Note that 5 in the figure indicates the upper lid of the concentration vessel.

When the water to be measured enters the concentration vessel 1 and passes through the hollow fiber membrane filter 2, insoluble solids cannot pass through the hollow fiber membrane filter 2 and are concentrated within the concentration vessel 1. The amount of water flowing through the thread membrane filter 2 is read by the integrating flowmeter 4, and the degree of concentration in the concentration vessel 1 is calculated.

As mentioned above, when the desired concentration is completed, close the valve 3, remove the integrating flow meter 4, and remove the concentration vessel 1.
The sample is transported to the analysis room, the upper lid 5 is removed, the concentrated liquid is taken out, and measurement is performed.

FIG. 2 shows the installed state of the sampling device. A branch pipe 8 is provided in a pipe 7 from a tank 6 containing a liquid to be measured, and a sampling device 9 of the present invention is installed in this branch pipe 8. In addition, the waste liquid that flows out of the integrated flow meter is transferred to waste liquid treatment equipment 1.
Processed as 0.

[Effects of the Invention] As is clear from the above, in the sampling device of the present invention, the sample liquid to be measured is collected and concentrated at the same time, so a container for storing the sampled liquid to be measured is unnecessary. Furthermore, since there is no need for a concentration process after collection, the time from collection to analysis is significantly shortened. Furthermore, since there is no need to concentrate a large amount of water to be measured, it is possible to save labor in analyzing insoluble solids.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention, and FIG. 2 is a piping diagram showing its installation. 1... Concentration vessel 2... Hollow fiber membrane filter 3... Valve 4... Integral flow meter 5... Top lid 6... ... Tank 7 ... Piping 8 ... Branch pipe 9.
... Sampling device 10 ... Waste liquid treatment equipment

Claims (1)

[Claims] a concentration vessel connected to a source of liquid to be measured via a valve;
A sampling device comprising: a hollow fiber membrane filter disposed within the concentration vessel; and an integrating flowmeter that collects the solution that has passed through the hollow fiber membrane filter and measures its flow rate.