JPH10137735A - Method of deodorizing night soil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain deodorizing effect of a temporary toilet over a long period of time by treating old feces with a disinfectant in advance. SOLUTION: In this method of deodorizing night soil for a long period of time, a sterilizer is thrown in a filth tank of a temporary toilet at least one time per day initially to perform disinfecting treatment and then an antimicrobial agent is thrown in by an appropriated amount at regular intervals. As the disinfectant, glutaraldehyde is used, and as the antimicrobial agent, 2-bromo-2-nitro-1,3-propanediol is used. And when throwing in the antimicrobial agent, the measured values of pH and ammonia are used as a basis.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for long-term deodorization of human urine odor, and more particularly to a method for long-term deodorization of good urine odor in a mobile toilet such as a temporary toilet.

[0002]

2. Description of the Related Art Conventionally, there are various types of temporary toilets, such as a type in which stool is temporarily stored in a waste tank, a type in which a septic tank is used in a flush type, and a type in which circulating water is used in a flush type. However, these are all methods of finally collecting waste, but in recent years, especially in tourist spots and event venues over a long period depending on the season, from the viewpoint of environmental protection, a water-washing type with a septic tank or a water-washing type is used. A temporary toilet using circulating water is often provided. These temporary toilets require a long period of installation to prevent the odor of filth. At present, activated carbon is used alone or activated carbon and impregnated carbon (two types, one for acidic substances and one for basic substances) In a dry deodorization method using a combination layer of the above and a large-capacity temporary toilet, a method of combining these methods using activated carbon and aeration is adopted. Further, a method has been practiced in which an antibacterial agent is added to a waste tank to obtain an odor preventing effect.

[0003]

However, activated carbon or activated carbon and impregnated carbon (two types for acidic substances and basic substances)
In the dry deodorization method using a combination layer of the above and the method of combining these with aeration, not only cannot a sufficient deodorizing and deodorizing effect be obtained, but also the cost associated with the regeneration treatment of the activated carbon is not enough to use a large amount of activated carbon. When considered, it was inefficient. In addition, in the method of adding an antibacterial agent to the waste tank to obtain an odor-preventing effect, these temporary toilets are of a pumping type, so that the waste is collected when the waste tank is full, but the waste is collected from the waste tank. At that time,
It is difficult to remove all of the waste, and at this time, even if it is cleaned with washing water, the waste is not completely removed and remains substantially as old waste (the remaining waste is called old waste). There).

[0004] Due to the presence of this old stool, a temporary toilet tank is usually decayed at a pH of about 9 to 10 and is contaminated with a waste liquid of 10 ⁷ to 10 ⁹ cells / ml. It is the current situation. For this reason, even if water and an antibacterial agent are added, it will be more than 8 exceeding the set pH of 6-7,
As a result, part of the antibacterial agent is deteriorated or the antibacterial activity is weakened. Therefore, the antibacterial agent does not exhibit sufficient antibacterial action even when new stool is supplied, and the stool not only rots immediately but also releases a small amount of ammonia due to its high pH and is released to the outside air, resulting in an odor. There was a problem that caused the occurrence. In addition, when using an antibacterial agent, the amount of input varies depending on the frequency of use of the toilet, so it has been difficult to control the input of the antibacterial agent over a long period of time.

Therefore, the present inventor has conducted various studies on the above problems, and as a result, found out that the cause of malodor generation was in old stool, and by treating this old stool with a disinfectant in advance, adding The present inventors have found that the antibacterial action of the antibacterial agent can be maximized, and the present invention has been made based on this finding. Therefore, an object of the present invention is to provide a long-term deodorizing method for human urine odor, which can provide a temporary toilet with a long-term deodorizing effect.

[0006]

The above objects of the present invention are attained by the following inventions. (1) A sterilizer is initially charged at a rate of at least once a day into a filth tank of a temporary toilet to perform a sterilization treatment, and then an appropriate amount of an antibacterial agent is injected at regular intervals, and a long time of urine smell is prolonged. Deodorant method. (2) Long-term deodorization of human odor according to the above (1), wherein glutaraldehyde is used as a bactericide and 2-bromo-2-nitro-1,3-propanediol is used as an antibacterial agent. Method. (3) The method for long-term deodorization of human urine odor according to the above item (1) or (2), wherein the introduction of the antibacterial agent is performed based on measured values of pH and ammonia. (4) The method for long-term deodorization of human odor according to any one of the above items (1) to (3), wherein the temporary toilet is a type of temporary toilet using circulating water.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The method for long-term deodorization of human urinary odor according to the present invention is characterized in that a sterilizing agent is initially charged into a filth tank of a temporary toilet at a rate of at least once a day, followed by a sterilizing treatment. It is characterized by feeding an appropriate amount at regular intervals,
Thereby, a long-term deodorizing effect of the temporary toilet can be obtained. Further, by using glutaraldehyde as a bactericide and 2-bromo-2-nitro-1,3-propanediol as an antibacterial agent, it is possible to obtain an effect that deodorization can be performed efficiently and for a long time. Further, the amount of the antimicrobial agent to be added can be efficiently reduced without waste by performing the measurement based on the measured values of pH and ammonia. Further, when the present invention is applied to a temporary toilet using circulating water, the effect of the present invention is further improved.

[0008] The toilet used in the present invention is not special, but has a normal waste storage tank,
It can be applied to a septic tank type, a temporary toilet that reuses circulating water as washing water, and the like. However, it is particularly preferable to use it for waste storage tanks used as temporary toilets or their facilities. Further, in the present invention, the substance to be introduced is such that the bactericide is glutaraldehyde and the antibacterial is 2-bromo-2-nitro-1,
An excellent long-term deodorizing effect can be obtained by adding a bactericide first and then thoroughly disinfecting the mixture and then adding an antibacterial agent at regular intervals.

The disinfectant is applied at least once a day. It is thrown in continuously for three to six days from the first throwing date.
After the disinfectant is charged, the antibacterial agent is charged based on the measured values of pH and ammonia as described later, and the process is continued until the use of the waste tank or the toilet is finished. During this time, the toilet is substantially kept odorless. The amount of the disinfectant and the antibacterial agent varies depending on the accumulated amount of filth per day. In the case of the germicide, the residual filth in the filth tank is usually 0.5 kg / day to 5 kg / day as 500 persons / day. Is used, and may be appropriately changed based on this. Preferably it is 0.5 kg / day to 3 kg / day. If the amount of the disinfectant is less than 0.5 kg / day, sufficient disinfection cannot be performed, and a sufficient deodorizing effect cannot be obtained. Further, it is economically disadvantageous if the amount of the disinfectant is more than 5 kg / day. In the case of an antimicrobial agent, it is preferable that the antimicrobial agent is charged based on the measured values of pH and ammonia.
Is charged when the pH is 7.5 or more and the ammonia concentration is 1 ppm or more or when it is expected. 500
1 kg / day to 7 kg / day is used as a person / day, and can be appropriately changed based on this. Preferably 1.5 kg /
Days to 4.5 kg / day. Antibacterial agent input is 1kg /
If it is less than days, the antibacterial effect is not sufficient and the deodorant effect cannot be sufficiently obtained. Even if the amount of the antibacterial agent exceeds 7 kg / day, it is economically disadvantageous.

[Action] In the long-term method for controlling human odor according to the present invention, the sewage tank of the temporary toilet cannot be completely removed even after the sewage is collected, and the old stool remains. This produces ammonia, which is one of the causes of foul odors. Therefore, this residual waste is sterilized with a disinfectant to prevent decay. Then, a new stool is supplied every day, so that the stool is putrefied by an antibacterial agent to prevent odor. Therefore, the generation concentration of ammonia can be suppressed to 1 ppm or less by combining the bactericide and the antibacterial agent.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings, but the present invention is not limited thereto.

Example 1 In a temporary toilet, 1.5 kg of glutaraldehyde was previously charged as a disinfectant to a storage type waste receiving tank on the first day, and 0.8 kg was charged on the second day. Further, on the third day, 0.8 kg was further introduced to sterilize the residual waste. During this time, fresh stool is also supplied. Then, from the fourth day onward, 3 kg of 2-bromo-2-nitro-1,3-propanediol was added as an antibacterial agent on the first day and 2 kg on the second day. Thereby, the generation concentration of ammonia could be suppressed to 1 ppm or less over 16 days, and odorlessness could be maintained during this period.

[Embodiment 2] FIG. 1 is a sectional view showing a temporary toilet to which the long-term method for deodorizing human odor according to the present invention is applied. In FIG. 1, a temporary toilet 1 includes a waste tank 2, a flow chamber 3, a separation chamber 4, a water supply chamber 5, and a storage chamber 6, which are connected by pipes 24, 41, 8, and 9. Further, air guided from the pipe 7 is blown. In this temporary toilet 1, circulating water 51 is supplied by a pipe 8, used as washing water, and collected in the waste tank 1. The waste tank 1 also contains the supernatant 43 of the separation chamber 4.
To form a suspension 25 and is aerated. The suspension liquid 25 is supplied to the first fluid chamber 31 of the fluid chamber 3, and is supplied to the second fluid chamber 32 while being aerated in the chamber 31. Then, it is supplied to the separation chamber 4, where the foreign molecules are separated, and the solid precipitates. This supernatant liquid 43
Is supplied to the water supply chamber 5 and is used as circulating water 51 therefrom as wash water in the washroom. A part of this is fed back to the waste tank 2 and used to form a suspended liquid 25 of waste. Further, the solid precipitated at the bottom of the separation chamber 4 is supplied to the storage chamber 6 through the pipe 9 and stored therein.

The waste receiving tank 2 of such a temporary toilet
A total amount of 11.5t and a filling water of 7.5t (full amount of waste 4.0t) are prepared, and about 0.22 liters of waste are accumulated per person, and about 500 users a day The test was conducted in a temporary toilet assuming the following conditions. Glutaraldehyde is used as a germicide, and 2-
Bromo-2-nitro-1,3-propanediol was used. First, 1.5 kg of fungicide is put in on the first day, 0.8 kg is put in on the second day, and 0.8 kg is put in on the third day. The remaining waste was sterilized. During this time, fresh stool is also supplied.

Then, from the fourth day, an antibacterial agent was added at a rate of 1.5 kg / day for 3 days. Thereafter, the pH value and the amount of generated ammonia were checked, and on the 19th day, 4.5 k
g. As a result, the deodorizing power was maintained for 35 days. During this time, fresh stool was also supplied. The test results are shown in FIGS.

As is apparent from FIGS. 2 and 3, the pH value is lowered by the addition of the antibacterial agent.
An increase in H was observed, and the pH almost exceeded pH 7.5 on the 18th day, indicating that the antibacterial agent was added on the 19th day. As a result, the pH decreased thereafter. Thereafter, the pH was 7.
It was suppressed to 5 or less. During this time, it was deodorized and odorless. Furthermore, when the injection of antibacterial agent was stopped after 35 days,
The pH value increased, and the generation of offensive odor was detected. Therefore, by using glutaraldehyde and 2-bromo-2-nitro-1,3-propanediol as a combination of a bactericide and an antibacterial agent, the generation concentration of ammonia over a long period of time as compared with a comparative example described later. 1 ppm
It was possible to maintain the odorless state for a long time.

[Comparative Example] In the case where only the antibacterial agent 2-bromo-2-nitro-1,3-propanediol is used and the input amount is 1.5 kg without using glutaraldehyde which is a fungicide. According to the test result in the case of 3.0 kg, which is twice as large as that of the above, 3 ppm or more of ammonia was generated from the seventh day. If the amount of the antibacterial agent is doubled,
From the 8th day, 2 ppm or more of ammonia was generated. Furthermore, when only glutaraldehyde was used, 1 ppm or more of ammonia was generated from the fourth day.

[0018]

According to the method for long-term deodorization of human odor of the present invention, a sterilizing agent is initially charged into a waste tank of a temporary toilet at a rate of at least once a day to perform a sterilizing treatment, and then the antibacterial agent is applied at regular intervals. By adding an appropriate amount in the above, it is possible to prevent the generation of urinary odor for a long period of time and to maintain an excellent odor-free effect. In addition, particularly in the above deodorization method, using glutaraldehyde as a bactericide,
Further, when 2-bromo-2-nitro-1,3-propanediol is used as an antibacterial agent, it is possible to effectively prevent human odor from being excreted for a long period of time. Further, the amount of the antimicrobial agent to be added can be efficiently reduced without waste by performing the measurement based on the measured values of pH and ammonia. Further, the toilet can be effectively applied to a temporary toilet using circulating water.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing a temporary toilet used in the present invention.

FIG. 2 is a graph showing circulating water pH fluctuation.

FIG. 3 is a graph showing the amount of ammonia generated from a circulating liquid.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Temporary toilet 2 Waste receiving tank 3 Fluid chamber 31 First fluid chamber 32 Second fluid chamber 4 Separation chamber 5 Water supply chamber 6 Storage chamber 7, 8, 9 Pipe

Claims (4)

[Claims] The present invention is characterized in that a disinfectant is initially charged at a rate of at least once a day into a waste tank of a temporary toilet for sterilization treatment, and then an appropriate amount of an antibacterial agent is supplied at regular intervals. Long-term deodorant method. 2. Glutaraldehyde is used as a bactericide, and 2-bromo-2-nitro-1,3 is used as an antibacterial agent.
2. The method according to claim 1, wherein propanediol is used.
3. The long-term deodorization method for human urine odor according to the above. 3. The method of claim 1, wherein the antibacterial agent is charged based on measured values of pH and ammonia. 4. The method of claim 1, wherein the temporary toilet is a temporary toilet using circulating water.