JPH03123836A - Method for monitoring water quality of river or the like - Google Patents

Abstract

PURPOSE:To detect the generation of water pollution and the point of the pollution source in an early time by connecting fine tubes between many monitor points and an analysis center and continuously and the water of the monitor points to the analysis center at all times. CONSTITUTION:The monitor points are provided at specified intervals or above placed between each other on the downstream side, etc., of the main inflow path 1a of the river 1 to be monitored and pumps 2 for water collection are installed to these points. The analysis center 3 is provided by selecting the intermediate positions at the respective monitor points and the small-diameter tubes 4 are laid between the analysis center 3 and the pumps 2. The tubes 4 are molded of a corrosion resistant material, such as, for example, rigid synthetic resin or stainless steel and the tubes having about 1 to several mm diameter of the inside surface are used. In the analysis center 3, the water is kept to overflow so as to gush at all times out of overflow containers 5 through the tubes 4 by the pumps 2. An auto-sampler 6 is operated to sample the water at every specified time from the respective containers 5. Various kinds of the analysis processing are executed by an automatic analysis apparatus 7. An alarm is emitted when pollutants are detected at the specified concn. or above.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to river water, water flowing out of factory drains, etc.
This invention relates to a water quality monitoring method for rivers, etc., which regularly tests the water quality at a wide range of monitoring points and constantly monitors it.

(Prior art) Traditionally, river water quality testing has mainly involved manually sampling river water, recording the sampling location, taking it to a laboratory, and performing various analyzes using automatic analyzers, or It was done by hand.

In addition, with the exception of wastewater from some chemical factories, water quality in many general rivers is not monitored at all times, and there are many cases where significant changes occur due to toxic substances or filth flowing into the river. In many cases, officials learned of abnormalities through citizen reports and rushed to conduct water quality tests.

(Problem to be solved by the invention) With the above-mentioned testing method, it takes a long time to discover changes in water quality, and the cause must be investigated and the source of pollution removed after the water pollution has spread over a fairly wide area. If removal is delayed, recovery may take a long time or an irreversible situation may occur.

SUMMARY OF THE INVENTION In view of these problems, the present invention aims to provide a method for monitoring the quality of water in rivers, etc., by which the occurrence of water pollution and the source of the pollution can be known at an early stage.

(Means for Solving the Problems) The characteristics of the water quality monitoring method for rivers, etc. of the present invention, which solves the conventional problems as described above and achieves the intended purpose, are as follows: Fine pipes are connected between a large number of nearby monitoring points and one analysis center, and the water from each monitoring point is continuously sent to the analysis center by a small pump through the fine pipes. It consists in testing the water quality of water from monitoring points using automatic equipment either constantly or at regular intervals.

(Function) In this water quality monitoring method, a small amount of water from each monitoring point is continuously sent to the analysis center, and the analysis center measures the pH and the content of contaminants expected in advance at regular intervals. Then, each monitoring location is automatically sampled and analyzed.

(Example) Next, an example of implementation of the present invention will be described with reference to the drawings.

In the figure, 1 indicates the river to be monitored.

And the main inflow routes 1a, 1a of the river...
The downstream side of the system and other locations are set as monitoring locations at a certain interval or more, and water sampling pumps 2 are installed there. An analysis center 3 is installed by selecting an intermediate position between these monitoring points, and a small diameter tube 4 is laid between the analysis center 3 and the pump 2 of each monitoring point. This narrow tube 4 is made of a highly corrosion-resistant material such as hard synthetic resin or stainless steel, and has an inner diameter of approximately 1 to several Ti.
Use 1 liter.

In the analysis center 3, as shown in FIGS. 2 and 3, the tip of each tube 4 from each monitoring point is opened at the bottom of the overflow container 5, and the pump 2 is used to pass the tube 4 through the overflow container 5. Let it overflow as if it were gushing out all the time.

The overflow container 5.5 corresponding to each monitoring point is
- Install in rows.

In addition, the autosampler 6 is connected to the overflow container 5.5...
An automatic analyzer 7.7 for detecting various components is installed movably along the row of automatic analyzers 7, and is further installed on the opposite side of the row of overflow containers along the movement position of the autosungler 6. Place them side by side.

Then, the autosampler 6 is operated to take samples from each of the overflow containers 5, 5, etc. at fixed time intervals, automatically perform various analysis processes, and detect contaminants above a certain concentration. When detected, an alarm is issued to notify the authorities.

According to this device, for example, the inner diameter of the tube 4 is 21 mm.
1II, and assuming that there is a distance of 10 km from the analysis center 3 to the monitoring point, the total volume inside the tube 4 is 31
．． If a pump with a flow rate of 4N and a liquid delivery capacity of 11 per minute is used, the water taken in at the monitoring point will reach the analysis center in 31.4 minutes.

(Effects of the Invention) As described above, in the method for monitoring water quality in rivers, etc. of the present invention, water at monitoring points is continuously sent to the analysis center and automatically tested for water quality, which prevents contamination. Detection can be done automatically without relying on the five human senses, making it possible to detect contamination early, detecting the content of contamination quickly, and finding the source of contamination quickly and easily. This is what became.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a plan view showing the general arrangement, Fig. 2 is a plan view showing the arrangement of analytical devices, and Fig. 3 is a sectional view of the overflow container portion. . 1...River, 1a...Main inflow route, 2
...Pump, 3...Analysis center, 4
...Small diameter tube, 5 ... Overflow container,
6...Auto sampler 7...Automatic analyzer.

Claims (1)

[Claims] Microscopic pipes are connected in series between numerous monitoring points such as river basins and the vicinity of major factory drainage outlets, and one analysis center.
The water from each monitoring point is constantly and continuously sent to an analysis center using a small pump through a microtube, and the water quality of the water from each monitoring point is tested by automatic equipment at all times or at regular intervals at the analysis center. Water quality monitoring method for rivers, etc.