JP2000070975A - Deodorant for waste water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain purification treatment of polluted water while keeping the effect of chemicals without inhibiting the growing environment of microorganisms in a purifying tank by mixing a deodorant to the defoaming agent and nutrient for the active sludge mixture liquid in the purifying tank. SOLUTION: A silicone-based defoaming agent as the defoaming agent in the purifying tank, polypeptone as the nutrient for microorganisms included in the active sludge in the purifying tank, and an amphoteric surfactant as the deodorant are mixed in each the same amt. The mixture is mixed with polyvinyl alcohol in the same amt. as the mixture, molded into a body of the size like a golf ball, and formed by hardening. The deodorant for waste water thus obtd. is placed at the position where water flows onto a flushing tank of a toilet so that the deodorant flows out by about 10 cc per each flush and that the deodorant is introduced into the purifying tank newly installed. Thereby, the effect by addition of the nutrient is obtd., and active sludge can be maintained and grown while production of foam or malodor is hardly caused.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a deodorant used for toilet drainage treated in a septic tank such as a septic tank.

[0002]

2. Description of the Related Art Conventionally, a septic tank such as a household combined septic tank for purifying waste water by the biological action of anaerobic bacteria and aerobic bacteria has been known as a septic tank.

[0003] Since these septic tanks utilize the decomposing action of microorganisms on organic matter, it is important to maintain the wastewater treatment tank in an environment where microorganisms can easily be activated. By the way, when a new septic tank starts operation or when the septic tank does not operate properly, the environment inside the tank is not sufficiently prepared. It is necessary to suppress the generation of bubbles and odor caused by the malfunction.

[0004]

Conventionally, the addition of the above-mentioned antifoaming agents, nutrients and deodorants involves adding a large amount of the drug directly to the septic tank or gradually dissolving the solid drug in order to maintain the effect for a long time. Is added.

[0005] In this case, the former addition in a large amount is excellent in that it has an immediate effect on defoaming, but it may hinder the growth environment of microorganisms, and it is highly possible that the purification effect is adversely affected. The latter, which gradually dissolves, does not have a risk of hindering the growth environment of microorganisms, but it sinks to the bottom of the tank, so that the dissolved components are difficult to diffuse throughout the tank, and there is a problem in the immediate effect,
If not sufficiently diffused, there is a problem that an effect commensurate with the addition cannot be obtained.

[0006] Further, in the wastewater flowing into the septic tank, various chemical substances such as a toilet deodorant and a stain remover may be mixed, and these may hinder the growth of microorganisms in the septic tank. There is a problem that causes a trouble in the purification treatment and also causes a bad smell accompanying the trouble.

[0007] The present invention solves the above problems, continuously supplies nutrients and the like for supporting the growth of microorganisms in the septic tank, and does not inhibit the growth environment of the microorganisms in the septic tank, and furthermore, the effects of these agents can be reduced. The task was to maintain the sewage purification treatment by maintaining it.

[0008]

In order to achieve the object, a deodorant for drainage according to claim 1 is obtained by mixing a defoamer and a nutrient for an activated sludge mixture in a septic tank together with a deodorant. It becomes.

According to this configuration, if the deodorant for drainage is dissolved together with the drainage into a drainage source, for example, a flush tank of a flush toilet, the chemical is supplied to the septic tank in accordance with the drainage amount each time the drainage is performed. In addition, the environment for growing microorganisms is stably maintained over a long period of time together with the defoaming effect in the septic tank.

The deodorant for drainage according to claim 2 is a defoamer,
A nutrient is carried on a water-soluble carrier together with a deodorant. According to this configuration, since the necessary components are dissolved in the waste water simply by being placed on the drain, the handling becomes easy.

[0011] The deodorant for drainage according to claim 3 is a defoamer,
Nutrients are dissolved in solvents together with deodorants. According to this configuration, the solubility in the wastewater is very good, so that a sustained effect can be reliably maintained.

[0012]

Embodiments of the present invention will now be described specifically. Example 1 A silicone-based antifoaming agent as a defoamer in a septic tank, polypeptone as a nutrient for microorganisms contained in the activated sludge, and an amphoteric surfactant as a deodorant were mixed in equal amounts, and this mixture was mixed with this mixture. A mixture with the same amount of polyvinyl alcohol was molded into a golf ball size and cured to form a deodorant for drainage. Example 2 A polyoxyalkylene glycol-based antifoaming agent as a defoaming agent in a septic tank, ethanol as a nutrient for microorganisms contained in the activated sludge, and an amphoteric surfactant as a deodorant were mixed in equal amounts, and this mixture was mixed. This mixture was mixed with three times the amount of purified water to form a liquid deodorant for drainage.

Next, the deodorant for drainage of Example 1 is placed on the flush tank of the toilet at a position where water flows down, and the deodorant for drainage of Example 2 is a liquid deodorant for liquid drainage. 1000
cc in a cylindrical container, and placed at the position where the flush water of the toilet flows down, and about 10 c per flush.
The sludge was set to flow out, and the drainage was introduced into the newly installed septic tank, and the state of activated sludge, the state of foam generation, and the odor were observed for one month.

The newly installed septic tank contains 5000 Mg /
What supplied activated sludge from the outside so that it might become L was used. The state of the activated sludge was determined by measuring the activated sludge concentration of sample water collected from the denitrification tank and the nitrification tank in the septic tank, and the state of generation of bubbles and the state of generation of odor were determined by visual sensory observation.

As a result, in both Examples 1 and 2, the concentration of the activated sludge in the tank after one month was 5500 Mg /
L and increased from the start, and the effect of the addition of the nutrient was confirmed. In addition, there was no particular generation of bubbles, and almost no odor was generated.

As a comparative example, a test was conducted in the same manner as described above, except that a solid agent containing only a deodorant was set to flow into a newly installed septic tank. As a result, the activated sludge concentration was 5,000 Mg / L even after a lapse of one month, and hardly increased.
In addition, foaming was observed, and the foam was removed by adding a defoaming agent about once a week.

Further, an odor was felt almost before and after the generation of bubbles. Next, following the above test, 50 parts of a chlorine-based toilet detergent (trade name: Pipeman: manufactured by Unicharm Co., Ltd.) were added.
When the test was continued for one month by supplying the flush water with flush water from the flush toilet one by one, and the test was continued for one month.
In the septic tank using the deodorant for drainage of 2, the activated sludge concentration is 5
500 Mg / L, almost no change, no generation of bubbles was observed, and no odor was felt. On the other hand, in the case of Comparative Example, the activated sludge tended to decrease to 4500 to 5000 Mg / L, Generation of bubbles and generation of odor were also observed more frequently.

[0018]

As described above, according to the deodorant for drainage of the present invention, since a defoamer and a nutrient are added to the deodorant mixed with the flush water of the flush toilet, Since these are supplied to the septic tank little by little as the toilet is used, there is no adverse effect when a large amount is added at a time, and the activated sludge in the septic tank can be maintained and grown.

In addition, since nutrients and the like are constantly supplied into the septic tank, even if a chemical substance that inhibits the growth of microorganisms in the septic tank flows in, these effects are minimized. Therefore, there is little adverse effect such as a decrease in activated sludge due to the inflow of harmful chemical substances, which has conventionally occurred, and an effect of performing a stable purification treatment can be obtained.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshikazu Okumura 1-1-1, Hama, Amagasaki-shi, Hyogo Inside Kubota R & D Laboratory Co., Ltd. (72) Mikiharu Tokushima 1-1-1, Hama, Amagasaki-shi, Hyogo Co., Ltd. Inside the Kubota R & D Laboratories (72) Koichi Okada 1-1-1 Hama, Amagasaki-shi, Hyogo F-term inside the Kubota R & D Laboratories Co., Ltd. 4C080 AA03 BB02 CC13 HH03 HH05 JJ01 JJ03 KK06 LL03 LL20 MM11 NN28 NN29 QQ03 4D027 BA02 BA06 4D028 AA03 AA04 AC06

Claims (3)

[Claims] 1. A deodorant for drainage, wherein a defoamer and a nutrient for an activated sludge mixture in a septic tank are mixed together with a deodorant. 2. The deodorant for drainage according to claim 1, wherein the defoamer and the nutrient are carried on a water-soluble carrier together with the deodorant. 3. The deodorant for drainage according to claim 1, wherein the defoamer and the nutrient are dissolved in a solvent together with the deodorant.