JPH04108596A - Flush toilet of wash water circulation type - Google Patents

Abstract

PURPOSE:To accelerate the decomposition of sewage and prevent the effect of a deodorizing agent from lowering due to a rise in the pH of the sewage by a method wherein an aeration device is provided to aerate the sewage in a sewage tank or an acidic substance or sewage decomposition catalyst is added thereto. CONSTITUTION:The decomposition of the sewage discharged from a commode 1 into a sewage tank 6 is accelerated by the aerobic bacteria multiplied by the oxygen supplied from aeration device 22. An acidic substance such as mineral acid and enzyme is added to the sewage tank 6 to maintain the pH of the sewage at a value of 4.0-9.0, whereby the effect of a deodorizing agent can be prevented from lowering due to a rise in the pH value of the sewage with the passage of time. By the addition of the enzyme functioning as a decomposition accelerating catalyst to the sewage tank, the decomposition of the sewage can also be accelerated. When a solid portion of the sewage from the commode 1 is received separately in a solid sewage receiving area 8 by a solid sewage sorting means 13, the force purification of sewage in the sewage tank 6 is further accelerated.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is installed in long-distance buses, railway vehicles, public buildings, etc., and collects filth discharged from toilets in a predetermined amount. This invention relates to a flushing toilet device of a flushing water circulation type, in which purified water is stored in a sewage tank and the sewage is filtered and used as flushing water for a toilet bowl.

(Prior Art) The above-mentioned flushing water circulation type flushing toilet device stores filth discharged from the toilet bowl in a sewage tank that stores a predetermined amount of purified water in advance, and filters the sewage in this sewage tank with a filtration device. After removing solid waste, the water is designed to be recycled and used as flushing water for toilet bowls.

The sewage in this sewage tank is deodorized and hygienically treated using chemicals such as deodorizers.

(Problems to be Solved by the Invention) However, the conventional configuration described above still has some problems that need to be improved.

In other words, one of the most important technical issues with this type of equipment that recycles wastewater is to ensure that the wastewater is deodorized, but the duration of the effectiveness of current deodorizers is quite short. However, it was not economically viable as it required frequent replenishment.

In addition, since there is no means to forcibly decompose the waste that gradually accumulates in the sewage tank, the filter often gets clogged, making the filter unhygienic and time-consuming. Not only was it necessary to spend a considerable amount of money on cleaning the equipment, but it also accelerated the corrosion of the equipment.

Moreover, sewage with a value that is not decomposed is that P)! The value gradually increased, reducing the deodorizing effect of the deodorant.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a flushing toilet device of a flushing water circulation type, which is equipped with a means for forcibly decomposing the filth in a sewage tank and can substantially eliminate the various problems described above.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the flushing water circulation type flushing toilet device according to the present invention has the following features: In a system that accommodates discharged sewage, filters the sewage in the sewage tank, and then circulates and supplies the sewage water in the sewage tank to a wash water discharge pipe installed in the toilet bowl using a circulation pump, the sewage in the sewage tank is The configuration is such that an aeration device 22 for aeration is attached.

As the aeration device 22, a diffuser plate 21.25 to which compressed air is supplied by the air pump 19 is preferably installed in the sewage tank G.

The aeration device 22 is preferably provided with an ozone generator 23 for blowing nascent oxygen into the wastewater, or a device having the same effect.

Further, the pH value of the waste water in the waste water tank is set to 4.0 to 9.
In order to maintain the concentration at zero, it is preferable to add acidic substances such as mineral dust and enzymes to the sewage treatment agent.

Alternatively, an enzyme may be added to the sewage tank S as a reaction catalyst for decomposing alkaline substances, malodorous substances, etc. in the sewage.

Furthermore, it is preferable to provide a solid waste sorting means 13 that guides only solid waste out of the waste discharged from the toilet bowl 1 to a solid waste receiving section 8 provided in a part of the sewage tank cylinder.

(Function) The decomposition of the filth discharged from the toilet bowl 1 into the sewage tank 6 is promoted by aerobic bacteria and the like grown by the oxygen supplied by the aeration device 22.

If acidic substances such as mineral dispersion and enzymes are added to the sewage tank to maintain the PH value of the sewage between 4.0 and 9.0, the PH value of the sewage will increase over time. It can prevent the effectiveness of odor from decreasing.

Furthermore, the decomposition of waste can also be promoted by adding an enzyme that serves as a catalyst for promoting decomposition into the wastewater tank.

Furthermore, if only the solid waste out of the waste discharged from the toilet bowl 1 is separated and stored in the solid waste receiving section 8 by the solid waste separation means 13, the forced purification of the wastewater in the wastewater tank 6 will be further promoted. Ru.

(Example) Below are the drawings! In the meantime, an example of the wooden design will be described.

Reference numeral 1 denotes a toilet bowl installed on the floor 2 in the toilet compartment, and a flushing water discharge pipe 3 is installed around the upper inner wall surface of the toilet bowl. Reference numeral 4 denotes a waste discharge pipe connected below the toilet bowl 1, and an on-off valve 5 that is opened only when the toilet bowl 1 is used is provided at the end thereof.

6 is the sewage tank, and the top of the front part (left side of the figure) is the toilet bowl 1.
It is installed in a tower located below.

Immediately below the end of the waste discharge pipe 4 protruding into the waste water tank cylinder, a flat conical waste receptacle [7 made of wire mesh or the like is provided. Reference numeral 1 denotes a solid waste receiving section, which is formed on the front side of a partition wall extending downward from the front peripheral edge of the waste receiving shelf 1.

1D is a rotary scraper installed in contact with the top surface of the waste receiving shelf 1, and removes only the solid waste from the waste discharged from the toilet bowl 1 and falling onto the waste receiving shelf 1 into the waste receiving compartment on the side. The liquid filth that plays the role of being brushed off passes through the mesh of the filth receiving shelf 7 and flows down into the sewage tank c below.

A rotating shaft 11 with a width of 1Ω is driven by a motor 12 installed on the top wall of the wastewater tank 6.

The waste receiving shelf 7, the scraper 16, and the motor 12 constitute a solid waste sorting means 13. 14
is a wall surrounding the rear side of the scraper 10 to prevent solid waste from scattering into the wastewater tank G.

1S is a filter installed at the rear of the sewage tank cylinder, and its upper portion projects above the sewage tank 6. A shielding wall 1G is provided on the front side of the filter 15, and the lower part thereof is open.

Reference numeral 17 denotes a circulation pump that circulates and supplies sewage in the sewage tank to the toilet bowl 1, and is interposed in a pipe 1 connecting the filtered liquid outlet of the filter 15 and the wash water discharge pipe 3.

Reference numeral 19 denotes an air pump constituting an aeration device, which is installed adjacent to the sewage tank 6. Reference numeral 21 denotes an air diffuser plate disposed on the inner bottom surface of the sewage tank 6, which has a large number of small holes for blowing air on the upper surface and serves to blow out air bubbles into the waste water. Reference numeral 21 denotes air supply piping. And this air pump 1
g, the air diffuser plate 20, and the piping 21 constitute an aeration device 22.

23 is an ozone generator that generates oxygen during the nascent period, and the generated ozone is connected to the air supply port of the air pump 1g through piping 24.
Supplied via.

Reference numeral 25 denotes another air diffuser plate attached to the inner wall surface of the solid waste receiving section 8, and is connected to the pipe 21.

2S is a treatment agent tank that stores chemicals for sanitation treatment of circulating washing water.In addition to deodorants, colorants, disinfectants, etc., it also serves as a catalyst for dispersing minerals such as dilute hydrochloric acid or promoting the decomposition of waste. Contains acidic substances such as enzymes.

This acidic substance acts as a neutralizing agent, and alkaline substances such as ammonia gradually accumulate in the wastewater in the wastewater tank s over time, increasing its pH value.
As a result, the deodorizing effect of the deodorant gradually decreases,
The increase in pH value is suppressed by adding acidic substances.

To prevent this kind of deterioration of deodorizing effect, the pH value of wastewater should be lowered to 4.
．． It has been experimentally confirmed that it is sufficient to maintain the value between 0 and 9.0. Of course, increasing the amount of deodorant used can compensate for the decrease in deodorizing effect, but it is not economically advisable.

Another role of enzymes is to forcibly decompose alkaline substances, malodorous substances, etc. that gradually accumulate in wastewater through their catalytic action. Such enzymes are
Appropriately select and use from well-known ones.

Among the treatment agents, mineral waste is stored in a dedicated tank, and the pH value of the wastewater is 4°0 to 9.0 based on the pH value information from the PH sensor (as shown) installed in the wastewater tank 6. The supply amount of mineral scattering may be automatically controlled so that it is kept within the range of .

Treatment agents other than mineral dispersion (or mineral dispersion in some cases) are not stored in the treatment agent tank 2S, but are directly poured into the wastewater tank 1 from an opening provided in the wastewater tank 6. Also good.

Next, the operation of the above configuration will be explained.

Prior to operating the device of the present invention, a predetermined amount of purified water is poured into the sewage tank. This predetermined amount is an amount that can keep the filtered wash water clean even when the toilet bowl 1 is continuously used and the inside of the sewage tank becomes almost full with filth and clean water.

Then, at the start of use of the device, the air pump 13 and the ozone generator 23 are activated to continuously blow compressed air containing ozone into the sewage layer in the sewage tank S.

When you use the toilet bowl 1 in this state, the operation of using it, for example, the opening and closing operation of the toilet door, the opening and closing operation of the toilet lid,
As a person sits on or leaves the toilet, a micro switch (not shown) is turned on and off, and based on the electric signal, the circulation pump 11 is energized for a predetermined period of time. The waste water is filtered by the filter 1S, and is then pressure-fed to the wash water discharge pipe 3 and sprayed into the toilet bowl 1.

Of the filth and wash water discharged from the toilet bowl 1 and falling onto the filth receiving shelf 1 in the sewage tank cylinder, only the solid filth is separated and stored in the solid filth receiving compartment 8 by the solid filth sorting means 13 as described above. , Liquid waste and washing water are placed in waste receiving shelf 1.
The wastewater flows into the wastewater tank cylinder through the mesh of the wastewater tank G, and while it remains in the wastewater tank G, it comes into sufficient contact with the air bubbles that continue to blow up from the air diffuser plate 20, and aerobic bacteria present in the wastewater proliferates. , because it actively decomposes organic waste,
Along with the rapid decomposition of foul-smelling components of waste.

Some of the mixed solid waste is also liquefied at an early stage, and the degree of clogging of the filter t1115 is also significantly reduced.

On the other hand, the solid waste stored in the fixed waste receiving section 8 also
Since it is forcibly decomposed by the aeration effect of the air blown out from the air diffuser plate 25, the odor disappears quickly, and the liquefaction of solid waste is promoted, making it easier to discharge from the wastewater tank 6.

FIG. 3 shows another embodiment of the present invention, which differs from the above embodiment in that the solid waste receiving section 8 and the solid waste sorting means 13 are omitted.

Even in this case, the decomposition effect of the above-mentioned foul-smelling organic matter by the aeration system W22 works noticeably, so unlike the conventional system in which the aeration system 22 is not provided, deodorizing agent is not frequently replenished into the wastewater tank 6. However, not only is there almost no disturbing odor while using the toilet, but the filter 1S is also less likely to become clogged.

In addition, in the above structure, the detailed structure may of course be changed as appropriate; for example, the shielding wall 16 may be omitted, or the structure or mounting position of the filter 1115, the air diffuser plates 2rJ, 25, etc. may be changed. , even if the oxygen supply device during the nascent stage is omitted, the object of the present invention can be achieved.

[Effects of the Invention] As is clear from the above explanation, according to the flushing water circulation type flushing toilet device of the present invention, by providing an aeration device for aerating the sewage in the sewage tank, the decomposition of sewage in the sewage is improved. is significantly promoted.

If an acidic substance is added to the wastewater in the wastewater tank to suppress the increase in the pH value over time, it is possible to prevent the effectiveness of the deodorant from decreasing due to the increase in the pH value of the wastewater.

Furthermore, if an enzyme that acts as a catalyst for decomposing waste is added to the wastewater tank, the decomposition of waste will be significantly accelerated.

Therefore, even if you do not frequently replenish the deodorizing agent into the sewage tank, you will not be able to smell the odor from the flush water sprayed into the toilet bowl, or the odors in the sewage tank will rise up into the toilet through the sewage discharge pipe. It disappears.

Furthermore, the early decomposition of solid waste in the sewage tank can significantly slow down the progress of clogging of the filter, which greatly reduces the effort required to maintain the filter. It has an excellent practical effect of making it less likely to corrode.

[Brief explanation of drawings]

1 and 2 are a longitudinal sectional view and a sectional view taken along the line X--X in FIG. 1, showing an embodiment of the present invention. FIG. 3 is a longitudinal sectional view showing another embodiment of the present invention. Symbol Table Toilet bowl 2 Cleaning water discharge pipe 4 Opening/closing valve 6 Waste receiving shelf 8 Partition wall 10 Rotating shaft 12 Solid waste separation means side wall 15 Shielding wall 17 21.24, 27.28 Air pump 25 Air diffuser plate 22 Ozone generator treatment agent tank floor sewage discharge pipe sewage tank solid sewage receiving compartment scraper motor filtration machine circulation pump piping aeration device

Claims (6)

[Claims] (1) The sewage discharged from the toilet bowl is stored in a sewage tank that stores a predetermined amount of purified water in advance, and the sewage in this sewage tank is filtered and then circulated and supplied to the wash water discharge pipe installed in the toilet bowl using a circulation pump. A flushing toilet device of a flushing water circulation type, characterized in that it is equipped with an aeration device 22 for aerating the sewage in the sewage tank. (2) The flushing toilet device of claim 1, wherein the aeration device 22 includes an air pump 19 for blowing air into the wastewater and air diffusers 20 and 25. (3) The cleaning water circulation type according to claim 1 or 2, characterized in that the aeration device 22 is equipped with an ozone generator 23 for blowing nascent oxygen into the wastewater or a device having the same effect. flush toilet device. (4) The pH value of the sewage in the sewage tank 6 is 4.0 to 9.
．． Claim 1 characterized in that acidic substances such as mineral waste and enzymes are supplied into the wastewater tank 6 in order to maintain the wastewater at zero.
3. A flushing water circulation type flushing toilet device according to any one of items 3 to 3. (5) An enzyme as a reaction catalyst for decomposing alkaline substances, malodorous substances, etc. in the wastewater is added to the wastewater tank 6. The described flushing water circulation type flushing toilet device. (6) A solid filth separation means 13 is provided for guiding only solid filth out of the filth discharged from the toilet bowl 1 to a solid filth receiving section 8 provided in a part of the sewage tank 6. A flushing toilet device of a flushing water circulation type according to any one of claims 1 to 5.