JPS5850793B2 - How to dissolve solid chlorine agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for dissolving a solid chlorine agent, and its purpose is to provide a method suitable for disinfecting urine collected in frequently used flush toilets of aircraft, trains, ships, etc. It's about doing.

As this type of conventional technology, for example, Japanese Patent Publication No. 432858
As described in Publication No. 7, a method in which solid chlorine tablets are filled in a vertical cartridge and comes into contact with continuously flowing wastewater at the opening at the bottom end of the cartridge, or for example,
As described in Japanese Patent No. 6-31511, this is a method of disinfecting wastewater by directly mixing a solid chlorine agent with collected urine or its washing water.

However, in the former method, the contact time with the chemical is instantaneous, and most equipment does not reach the required chlorine concentration, whereas in the latter method, the treatment liquid is adjusted according to changes in the flow rate of wastewater. Complete sterilization cannot be expected due to extreme variations in the chlorine concentration inside.

In view of these circumstances, the inventors of the present invention conducted extensive research into a method to completely sterilize urine collection in flush toilets that are frequently used in vehicles, etc., and as a result, created a water storage chamber at the bottom end of the vertical cartridge. A drug solution is intermittently supplied to this, a plurality of tablets made of a solid chlorine agent capable of releasing active chlorine are filled into the cartridge, and the weight ratio of the drug solution supplied to the water reservoir and the tablets in contact with it is It has been found that the intended purpose can be achieved by forming a medicinal solution at a ratio of 1:1 to 100 and mixing this with urine collected from vehicles, etc.

According to the method of the present invention, a water storage chamber is provided at the lower end of the cartridge, and a drug solution is intermittently supplied to this chamber at a ratio of 1 to 1/10 times the solid chlorine tablet. Since it is made by dissolving a type of chlorine tablet, the drug solution is poured into the water reservoir for about 5 to 50 minutes.
A saturated solution of solid chlorine agent is formed by standing for 15 minutes, and the chlorine concentration will no longer change even if the chemical solution is left in the reservoir chamber any longer, so the chemical solution always has a predetermined chlorine concentration of several thousand ppm. A certain amount of chlorine is obtained depending on the size of the water storage chamber, and each time the flush toilet is used, the chemical solution in the water storage chamber is mixed with collected urine wastewater to constantly supply active chlorine that matches the amount of chlorine required by the collected urine wastewater. Walls can be sterilized and disinfected.

Typical solid chlorine agents used in the present invention are calcium hypochlorite, trichloroisocyanuric acid, dichloroisocyanuric acid, and their alkali metal salts, and powder or granules are compressed under a tableting pressure of 500 kg. /i or higher to make it into a tablet.

In carrying out the method of the present invention, as shown in FIGS.
, 2 . A sheath cylinder 7 having an inclined slit 6 is fitted to the outer periphery of the longitudinal groove 4 of the outer cylinder 5, and a sheath cylinder 7 having an inclined slit 6 is fitted to the outer circumference of the longitudinal groove 4 of the outer cylinder 5. The intersecting position of the groove 4 and the slit 6 of the sheath cylinder 7 is changed to an appropriate position to adjust the amount of immersion of the tablets 8, 8, etc. in the cartridge and the drug solution in the water reservoir 9. However, if the weight ratio of the drug solution and the tablets in contact with it exceeds 1:1, if there is a time variation in the supply interval, the tablets may be excessively dissolved, which is not only uneconomical but also requires a circulating system. It is not suitable for use as a sterilization device for vehicles, etc. by increasing the capacity of water storage tanks in toilets, etc. On the other hand, if the weight ratio of the drug solution and the tablets in contact with it is less than 1:10, the collected urine wastewater that should be treated is It is not possible to form a chemical solution in an amount corresponding to the required amount of chlorine.

The drug having a chlorine concentration of several thousand ppm obtained by the method of the present invention is mixed with the urine collection or a mixture of the urine collection and its washing water in a proportion capable of supplying the required amount of chlorine, usually about 200 ppm or more.

FIG. 3 is a system diagram showing an example in which the method of the present invention is applied to a storage type flush toilet, in which collected urine excreted into the toilet bowl 11 is sent to the solid-liquid separator 12 by flushing water from the water tank 10.
The collected urine wastewater separated from the solids is led to a storage tank 13, while a part of the washing water led from the water tank 10 is sent to a drug dissolving device 14 having the configuration shown in FIGS. 1 and 2. The collected urine wastewater is intermittently sent to the storage tank 13 as a chemical solution with a high chlorine concentration, and the sterilized collected urine wastewater is discharged from the storage tank 13 as appropriate.

The method of the present invention will be specifically explained below with reference to Examples.

Example 1 A plurality of tablets 8, 8, having a diameter of 30 mm, a thickness of 10 mm, and a weight of 15 r were compressed from granular sodium dichloroisocyanurate at a surface pressure of approximately 1000 kg/- in a cartridge 1. The drug solution chlorine concentration in the water reservoir chamber 9 was filled in a row, and the weight ratio of the drug solution at 18 °C and the tablets 2, 2, etc. immersed in water was approximately 1:2.5, and the chlorine concentration of the drug solution in the water reservoir chamber 9 was determined over time. When the changes were measured, the results were as shown in Table 1.

According to the test conducted by Goret et al., it was found that according to the method of the present invention, a drug with a high chlorine concentration of several thousand ppm was formed in about 5 to 15 minutes, and that the chlorine concentration of the drug hardly changed even after a longer period of time.

Embodiment 2 In Embodiment 1, each of
When 5 ml of drug solution was supplied every 10 minutes and the chlorine concentration of the drug solution overflowing from the water storage chamber 9 was measured each time, the results were as shown in Table 2.

These tests confirmed that the method of the present invention makes it possible to quantitatively form a chemical solution with a constant chlorine concentration within an extremely short period of time.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway vertical cross-sectional view showing a drug dissolving device suitable for carrying out the method of the present invention, and FIG. 2 is a perspective view similarly showing the main parts.
FIG. 3 is a system diagram showing an example of applying the method of the present invention to a storage type flush toilet. In the figure, 1 is a cartridge, 2 is a slit, 3 is a water inlet, 4 is a vertical groove, 5 is an outer cylinder, and 6 7 represents a slit, 7 represents a sheath cylinder, 8 represents a tablet, and 9 represents a water reservoir chamber.

Claims (1)

[Claims] 1. A water reservoir is provided at the lower end of the vertical cartridge, a drug solution is intermittently supplied to this chamber, and a plurality of tablets made of a solid chlorine agent capable of releasing active chlorine are filled into the cartridge, and the reservoir chamber is filled with a plurality of tablets made of a solid chlorine agent capable of releasing active chlorine. The weight ratio of the supplied drug solution and the tablets in contact with it is 1:1 to 100.
A method for dissolving a solid chlorine agent, characterized by forming a chemical solution having a predetermined chlorine concentration in a relatively short period of time.