JPS6329247Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an apparatus for pre-treating polluted water prior to measurement such as analysis.

When analyzing polluted water such as river water, lake water, etc. that contains oil droplets, remains of animals and plants, or microorganisms such as fungi and algae (hereinafter referred to as microorganisms) as suspended matter, these suspended matter are usually removed. An analysis will be conducted on what has been done. Nitrogen N as an analysis component,
When phosphorus P, chemical oxygen demand COD, hydrogen ion concentration index PH, etc. are required, the results of said analysis often do not give satisfactory results. This is because analytical elements such as nitrogen and phosphorus contained in the cell contents of these microorganisms are removed at the same time as the bacterial cells are removed. Therefore, in order to obtain accurate analysis values, pretreatment to destroy the cell membranes of microorganisms is required prior to analysis or other measurements.

The present invention is an apparatus for the above-mentioned pretreatment, and will now be described with reference to the drawings, which are embodiments thereof. The filter vessel 1, which is a part of the device of the present invention, is a container-shaped body divided into two by a floor 1a into an upper container 1b for containing contaminated water, which is the sample liquid 8, and a lower leg 1d. There is a conduit-shaped opening 1c in the upper part of the housing part 1b.
The leg portion 1d is funnel-shaped, and the end of the leg is connected via a conduit 4 to a cleaning conduit 4a and a measuring instrument conduit 4b.

The material for the floor 1a is not particularly limited, but
It is fixed to the wall with a porous plate like a glass filter, and two groups of glass particles are placed on the top surface of the plate. As a result of practical use, the appropriate size of the glass particles is about 4 to 20 mesh.

In the present invention, an ultrasonic homogenizer 3 is attached to such a filter 1. When installing the vibrator 3a, at least the tip of the vibrator 3a must be positioned below the liquid level L of the test liquid 8 contained in the storage portion. Here, being positioned below the liquid level L means that the tip of the vibrator 3a is fixedly positioned below the liquid level L, or by moving the homogenizer itself (not shown) to lower the liquid level L.
This includes cases where it is possible to enter the area below. The reason why the homogenizer 3 is attached is, of course, that the intense stirring or shearing force generated during operation of the homogenizer destroys the cells of microorganisms floating in the contaminated water to be tested, and the cell fluid is released into the test liquid. This is to take it out and turn it into a solution. Therefore, the power consumption of the attached homogenizer 3 is 30W to 300W, according to what the present inventor has determined experimentally.

A vacuum pump 6 is interposed in the measuring conduit 4b connected to the leg end of the measuring device leg 1d, and the vacuum pump 6 accelerates the flow of the test liquid and transfers the liquid to the measuring device. 7. The cleaning pipe 4a is connected to a cleaning water source W1 via a valve 5.

When using the device of the present invention described above, a predetermined amount of the polluted liquid 8 to be tested, for example 100 ml, is placed in the container 1.
b, and the pump 6 and homogenizer 3 are operated for, for example, 1 minute to promote vacuum and destroy microbial cells. Therefore, the analysis results for the liquid include nitrogen, phosphorus, chemical oxygen demand,
Give correct values for hydrogen ion concentration index, etc. As a result of this process, residues of cell membranes and other floating substances that have been sequentially destroyed accumulate on the second group of glass particles. In such a case, the valve 5 is opened to allow the wash water W1 to flow back into the filter 1 through the pipe 4a. At this time, the glass particles 2 fly up in the strainer 1, and cell membrane residues and the like attached to the glass particles 2 are removed. Thereafter, the cleaning waste water W2 is allowed to overflow and be removed from the opening 1c.

Therefore, according to the device of the present invention, polluted water can be quickly pretreated for accurate measurements.

[Brief explanation of the drawing]

The drawing is a schematic explanatory diagram of the device of the present invention. 1...Separator, 1a...Floor, 1b...Test contaminated water storage section, 1c...Opening, 1d...Legs, 2
...Glass particles, 3...Homogenizer, 3a...
Vibrator, 4... Conduit, 4a... Cleaning conduit, 4b
...Measuring instrument pipe, 5...Valve, 6...Vacuum pump, 7...Measuring instrument, 8...Test polluted water.

Claims (1)

[Claims for Utility Model Registration] (1) Filter vessel 1 with two groups of particles placed on bed 1a
is the liquid level L to be tested in which the ultrasonic homogenizer 3 and its vibrator 3a are housed in the filter housing section 1b.
A pretreatment device for measurement of polluted water, characterized in that it is attached to a position where it can be inserted or entered, and the filter leg portion 1d is connected to a water washing pipe 4a. (2) The polluted water measurement pre-treatment device according to claim 1, wherein the particles 2 are glass particles having a size of 4 to 20 mesh.