KR100335155B1 - Disinfection Method and Device for Automatic Dissolving Disinfectant in Origin Water - Google Patents

Abstract

The present invention relates to a raw water sterilization method for sterilizing bacteria in raw water pumped up from a water intake source (water intake), and an automatic calcium hypochlorite input device for raw water sterilization.

In the automatic calcium hypochlorite injection device of the present invention, an insertion hole 3 is installed at the center of the upper surface, and a circular inlet 6 is installed at one point of the front surface so that a part of raw water can flow into the internal space. In addition, a plurality of partition walls (4) are placed in the inner space at equal intervals so that the raw water introduced into the interior through the water inlet can be meandered at a high speed, and also closer to the outlet port than the partition wall. The weir wall 5 is placed at a low height, and a solution (raw water in which calcium hypochlorite is dissolved) that has passed through the weir wall 5 is discharged to the outside at one point of the rear surface. A box-shaped dissolution tank 1 in which a circular water outlet 7 is installed;

A lower end portion inserted into the insertion port 3 on the dissolution tank, the lower surface of which is supported by the partition wall 4 in the dissolution tank;

It consists of.

According to the automatic calcium hypochlorite dosing device of the present invention configured as described above, the dissolution rate of calcium hypochlorite is constant, and a certain amount of calcium hypochlorite is automatically dissolved (injected) in raw water, as well as tablets for raw water disinfection ( Calcium hypochlorite tablets) is injected (dissolved) with no power, so it is convenient to manage and maintain the automatic input device, and in particular, the configuration of the device is simple and the manufacturing cost is low.

Description

Disinfection Method and Device for Automatic Dissolving Disinfectant in Origin Water}

The present invention relates to a disinfection method for chlorine disinfection of groundwater or tap water and automatic dispensing of calcium hypochlorite for raw water disinfection, and in particular, by the mixing of calcium hypochlorite solution and raw water by water flow, hypochlorous acid in raw water The present invention relates to a calcium hypochlorite automatic dosing device for raw water disinfection, which can automatically adjust the concentration of calcium and to inject the calcium hypochlorite in a non-powered manner, and to a method for chlorine disinfection of raw water using the same.

In order to prevent bacterial contamination of waterworks, chlorine disinfection is generally performed. However, as the distance from the water intake (water intake) increases, the concentration of residual chlorine decreases proportionally, which may cause pathogenic bacteria to grow and grow.

In particular, the area of the withdrawal of groundwater liver used as tap water, calcium hypochlorite (OCl ^-) considerable difficulties, but we recommend to residents to be put autonomously, as the residents do not have professional knowledge hagieneun conventional sterilization services In addition, the regular dose of solid calcium hypochlorite tablets is cumbersome every day.

In addition, although the concentration of chlorine in the final drinking water should be kept constant, when the calcium hypochlorite is added at regular intervals, the concentration is increased due to the difference in dissolution rate caused by the volume change of the calcium hypochlorite tablets over time. It is almost impossible to get it right.

On the other hand, since it is practically difficult to inject calcium hypochlorite by hand as described above, in consideration of this, an automatic feeding device made to automatically inject a certain amount of calcium hypochlorite per day has been proposed and used. In the case of the automatic input device, the power consumption is large, the structure is not only complicated, but also expensive, and the metal parts are exposed to chloric acid to corrode and frequently fail, the management and maintenance work of the automatic input device is difficult.

In view of the above points, the present inventors have applied for a device capable of automatically adjusting the concentration of calcium hypochlorite by diffusion, and in particular, a device capable of automatically injecting calcium hypochlorite with no power, as a patent application No. 1999-39639. .

The present invention allows the calcium hypochlorite solution to be quantitatively mixed with raw water by water flow, so that the concentration of calcium hypochlorite can be automatically adjusted, and a disinfection method using the apparatus. The purpose is to provide.

In addition, another object of the present invention is to provide a calcium hypochlorite automatic dosing device for raw water disinfection capable of automatic injection of calcium hypochlorite without power.

Still another object of the present invention is to provide a calcium hypochlorite automatic dosing device, which is simple in structure, can be provided at low cost, does not cause a breakdown, and is particularly convenient for management and maintenance.

The invention of the above-mentioned patent application No. 1999-39639 is also to achieve the above object, but the present invention is to provide a calcium hypochlorite automatic injection device of a method different from the above invention.

1 is a perspective view of an automatic calcium hypochlorite injection device according to a first embodiment of the present invention,

2 is a perspective view of an automatic calcium hypochlorite injection device according to a second embodiment of the present invention;

3 is a cross-sectional view taken along line A-A during the use state of the automatic calcium hypochlorite injection device shown in FIG.

4 is a cross-sectional view along the line B-B during use of the calcium hypochlorite automatic injection device shown in FIG.

5 is a cross-sectional view taken along line C-C of the automatic calcium hypochlorite injection device shown in FIG.

Figure 6 is a schematic configuration of the raw water disinfection line is installed calcium hypochlorite automatic injection device of the present invention.

[Description of Drawing Reference]

1, melting tank, 2 ...

3 ... insertion opening, 4 ... partition wall,

5 ... weir wall, 6 ... inlet,

7 outlet, 8, 9 flow control valve,

10 ... raw water supply pipe, 11, 19 ...

12 Bypass, 13 ...

14, 15 ... connector, 16 ... grill,

17 calcium chlorite tablets, 18 sludge,

20 ... rubber seal.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the raw water sterilization method and the automatic calcium hypochlorite dosing device for raw water sterilization will be described in detail.

First, the raw water disinfection method according to the present invention will be described.

As mentioned above in the example of the prior art mentioned above, the chlorine disinfection method thus far has been made in the form of putting a certain amount of chloric acid (calcium hypochlorite) into the entire treated water (raw water).

However, according to such a conventional method, in the case of liver abnormality, there is a problem of waiting a considerable time until the chemicals injected into the tank (water source) are spread evenly as a whole.

However, according to the present invention, a part of the raw water drawn up from the intake source is introduced into the automatic dosing device in which the calcium hypochlorite tablet 17 is charged through the pipe to make the calcium hypochlorite solution, and in the intake water The remaining portion of is branched into a bypass, and then the raw water sterilized by re-combining the branched raw water and the calcium hypochlorite dissolved solution. In this case, since a certain amount of calcium hypochlorite solution is mixed with raw water to disinfect chlorine, the concentration of chlorine in the raw water required by the season is different by controlling the speed of water flow or adjusting the size of a container into which calcium hypochlorite tablets are charged. It can be adjusted at will, and also there is no inconvenience to wait for a long time after the drug.

Hereinafter, the disinfection apparatus which makes the said method executable is explained in full detail.

1 is a perspective view showing the automatic calcium hypochlorite injection device of the first embodiment in which the technical idea of the present invention is embodied, Figure 3 is a cross-sectional view taken along the line A-A of Figure 1, Figure 5 is a cross-sectional view taken along the line C-C of FIG.

Calcium hypochlorite automatic injection device of the first embodiment of the present invention shown in the drawings,

On the upper surface-preferably, in the center of the upper surface-insertion hole 3 installed in a circular, square or other shape, and at a point on the front surface so that a part of the raw water can be introduced into the internal space. A circular inlet 6 and a plurality of partition walls 4 which are installed at equal intervals in the inner space so that raw water introduced into the interior through the inlet can meander at a high speed, and the outlet side Weir wall (5) to be placed in close proximity, and the calcium hypochlorite solution (raw water in which calcium hypochlorite dissolved) passed through the weir wall (5) is installed at a point on the rear side to be discharged to the outside A box-shaped dissolution tank 1 composed of a circular water outlet 7;

The lower end portion inserted through the insertion port 3 of the dissolution tank is supported on the partition wall 4, and on the lower surface supported on the partition wall 4, the calcium hypochlorite tablet 17 charged in the hollow thereof is placed. A hollow-preferably circular hollow pipe-shaped receiving container 2 in which the grill 16 for supporting is mounted;

Characterized in that the configuration.

On the other hand, in order to stably support the said storage container 2, the site | part which contact | connects the lower surface of the storage container 2 among the partition walls 4 provided in the inside of the dissolution tank 1 so that height may be lower than another part, A part of the upper end is cut out and formed in the shape of a storage container.

The automatic calcium hypochlorite injection device of the first embodiment of the present invention configured as described above is used, for example, as shown in FIG.

That is, as can be seen from the above drawings, the inlet 6 for raw water inflow and the calcium hypochlorite solution discharged in front and rear of the dissolution tank 1 constituting the automatic calcium hypochlorite injection device of the present invention On the outlet 7, the connectors are connected via a rubber seal 20 for liquid-tightness, each of which has a hole having the same diameter as the tube diameter of the connector 14, 15. In a liquid-tight state, in some cases, one end of the direct connection pipe may be welded to the inlet or outlet part without using the rubber seal.

Of course, in such a case, it is assumed that the constituent material of the dissolution tank is preferably metal, preferably stainless steel, which is excellent in corrosion resistance. If the constituent material is made of synthetic resin, it is integrated in another way accordingly.

And, by installing the flow control valves (8, 9) on the pipe line of the connecting pipe (14, 15), it was possible to control the concentration of residual chlorine in the final drinking water.

In addition, since the concentration of the residual chlorine also varies depending on the flow rate of the raw water passing through the inside of the dissolution tank and the diameter of the storage container, the residual chlorine concentration can be adjusted by changing the flow rate and the diameter of the storage container.

Here, reference numeral 10 denotes a raw water supply pipe, 13 a discharge pipe, 11 and 19 a T jointing, 12 a bypass (BYPASS), and 18 a sludge.

On the other hand, the raw water disinfection line configured as described above is operated as follows.

First, in order to disinfect the raw water pumped up from the intake source (not shown), through the raw water supply pipe 10, to feed the raw water toward the automatic calcium hypochlorite injection device of the present invention, along the raw water supply pipe 10 The raw water before sterilization which flowed in flows into the bypass 12 and the connection pipe 14 which are provided at each end of the tee joint pipe 11 suitably, and flows.

The flow rate of the raw water flowing into the bypass and the connecting pipe 14 can be adjusted by operating the flow regulating valve 8 provided on the pipe of the connecting pipe.

On the other hand, the other end of the bypass 12 is connected to one end of the tee-pipe (19) connected to the outlet pipe 13, the raw water flowing through the bypass does not contain any chloric acid.

In addition, a predetermined amount of raw water branched into the connecting pipe 14 by the tee-joint pipe described above flows into the inside of the dissolution tank through an inlet 6 installed on the front side of the dissolution tank 1. In addition, a plurality of partition walls (4) placed at equal intervals inside the dissolution tank will meander the flow of raw water.

Therefore, even if the inflow and outflow flow rates of the raw water are low, the flow velocity in the dissolution tank 1 configured to move the long distance in a zigzag form becomes very fast.

As such, when the flow velocity in the dissolution tank is kept constant at high speed, the dissolution rate of calcium hypochlorite becomes constant, and the concentration of calcium hypochlorite can be kept constant.

In addition, since the sludge 18 generated by the scale or the corrosion is swept out by the high flow rate, various problems caused by the sludge 18 deposited in the melting tank can be solved.

In this way, when raw water passes while meandering inside the melting tank, for example, when the raw water that has passed around the partition wall 4 arrives at the central point of the melting tank 1, the lower surface of the storage container 2 locked below the water surface The raw water and the calcium hypochlorite tablets 17 are brought into contact with each other through a grill on the bed.

As such, the raw water in which calcium hypochlorite is dissolved, that is, calcium hypochlorite solution, turns around the rear weir wall 5 and exits toward the outlet 7, or as shown in the drawing, to a height lower than the partition wall 4. Overflow on the installed weir wall (5) exits toward the outlet.

The solution exiting the outlet is joined with the raw water branched to the bypass 12 in the tee-pipe and flows into the outlet pipe 13 to disinfect the raw water.

2 is a perspective view of the automatic calcium hypochlorite injection device according to the second embodiment of the present invention, Figure 4 is a cross-sectional view taken along the line B-B of Figure 2 (see Figure 5).

In the above drawings, the calcium hypochlorite automatic injection device of the second embodiment,

The insertion hole 3 which is installed on the upper surface, preferably in the center of the upper surface, in a circular, square or other shape, and is installed at a point on the front surface so that a part of the raw water can be introduced into the internal space. A circular inlet 6 and a plurality of partition walls 4 which are installed at equal intervals in the inner space so that raw water introduced into the interior through the inlet can meander at a high speed, and the outlet side Weir wall 5, which is placed near, and a circular outlet, which is installed at a point on the rear surface so that the solution (raw water in which calcium hypochlorite is dissolved) passed through the weir wall can be discharged to the outside. A box-shaped dissolution tank 1 composed of (7) (the same as in the first embodiment so far);

A hollow-preferably circular hollow pipe-shaped receiving container (2) having a lower end inserted into the insertion opening (3) on the dissolution tank and supported by the partition wall (4);

Characterized in that the configuration.

On the other hand, the difference between the second embodiment of the present invention and the first embodiment described above, as can be easily seen through the drawing, the grill 16 for supporting the calcium hypochlorite tablets 17 loaded in the receiving container 2 In the presence or absence of

In the second embodiment, the partition wall 4 is configured to support the calcium hypochlorite tablet 17 by densifying the interval of the partition wall 4 placed inside the dissolution tank 1.

In addition, since the configuration and operation relationship of each part is the same as in the first embodiment, detailed description thereof will be omitted here.

According to the automatic calcium hypochlorite dosing device of the raw water disinfection device according to the present invention configured as described above, by the diffusion method, not only can the calcium hypochlorite be accurately added to the raw water that needs to be disinfected, but also the calcium hypochlorite every day. There is no need to add a convenient and, in particular, there is an advantage that the concentration control of calcium hypochlorite is automatically made.

Table 1 and Table 2 below each show the test results of the test run of the input device of the present invention, which shows that the concentration of calcium hypochlorite is constantly maintained over time.

Short run Contact area (78.5㎠, 60ℓ / hr) Contact area (176.7㎠, 60ℓ / hr) Hours (hr) Concentration (ppm) Hours (hr) Concentration (ppm) Hours (hr) Concentration (ppm) Hours (hr) Concentration (ppm) 1hr 60 6hr 50 1hr 150 6hr 140 2hr 60 7hr 50 2hr 145 7hr 120 3hr 55 8hr 50 3hr 145 8hr 120 4hr 55 9hr 50 4hr 140 9hr 120 5hr 55 10hr 50 5hr 140 10hr 120

Long-term operation Contact area (78.5㎠, 60ℓ / hr) Contact area (176.7㎠, 60ℓ / hr) Day Concentration (ppm) Day Concentration (ppm) Day Concentration (ppm) Day Concentration (ppm) 1day 50 6day 45 1day 120 6day 110 2day 50 7day 50 2day 120 7day 120 3day 45 8day 50 3day 120 8day 110 4day 45 9day 45 4day 120 9day 110 5day 45 10day 45 5day 110 10day 120

In addition, since the structure of the device is simple and the input of calcium hypochlorite is automatically performed without using a separate power unit, there is an advantage in that the manufacturing cost and management and maintenance cost of the device are reduced.

Claims (3)

delete Raw water supply pipe 10 through which the raw water withdrawn flows, a portion of raw water flowing in the raw water supply pipe, and automatic dispensing of calcium hypochlorite to dissolve calcium hypochlorite at a high concentration therein; and In the chlorine disinfection device composed of a bypass 12 through which the remaining part of the stream flows, and a discharge pipe 13 through which the raw water passing through the bypass and the solution discharged from the automatic input device are joined, Said calcium hypochlorite automatic injection device, An insertion hole 3 is installed on the upper surface, and an inlet 6 is installed at one point of the front surface, and a plurality of partition walls are formed so that raw water introduced through the inlet meanders at a high speed. 4) is dissolved in the inner space at equal intervals, the weir wall (5) is placed near the outlet side, and the dissolution tank (1) in which the outlet (7) is installed at one point of the rear; A hollow body-shaped storage container 2 having a lower end portion inserted through the insertion hole 3 of the dissolution tank supported on the partition wall 4; Automatic calcium hypochlorite dosing device for raw water disinfection, characterized in that consisting of. The method of claim 2, Automatic disinfection of calcium hypochlorite for raw water disinfection, characterized in that the grill 16 is installed on the lower surface of the housing (2).