JPH11165028A - Operation of microorganism deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an operation method of a microorganism deodorizing device enabling to excellently deodorize complex odor too. SOLUTION: Microorganisms are collected from soil or discharge water in the vicinity of a generation source of door and the microorganisms are cultivated, then carried on a carrier 1a and are immobilized on the deodorizing device having a deodorizing tank 1 housing the carrier. Then the microorganisms suited to the door are collected and cultivated, thus even complex odor can be excellently and surely deodorized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for operating a microorganism deodorizing apparatus for deodorizing odors including ammonia and the like by the action of microorganisms.

[0002]

2. Description of the Related Art
When deodorizing NH ₃ or the like with a microorganism deodorizing device, individually separated ammonium oxidizing bacteria or nitrite oxidizing bacteria are cultured and immobilized on the microorganism deodorizing device. However, these ammonia-oxidizing bacteria and nitrite-chlorinating bacteria require a habituation period and grow very slowly, so that there is a problem that a sufficient deodorizing ability cannot be obtained for a long period after the operation of the apparatus. In addition, even if these bacteria are immobilized on the microorganism deodorizing device, the odor of ammonia alone can be deodorized, but other odor components such as phenol and cresol cannot be deodorized. There is also a problem that there is no deodorizing ability. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for operating a microorganism deodorizing apparatus capable of quickly growing microorganisms suitable for odor components and obtaining sufficient deodorizing ability from the beginning. I do.

[0003]

Means for Solving the Problems To solve the above problems, a first aspect of the method for operating a microorganism deodorizing apparatus according to the present invention is a method for operating a microorganism deodorizing apparatus which introduces odor and deodorizes by the action of microorganisms. The method is characterized in that microorganisms are collected from soil or wastewater in the vicinity of the source of the odor, the microorganisms are cultured, and then immobilized on the deodorizer.

In a second aspect of the present invention, the method for operating a microorganism deodorizing apparatus according to the first aspect is characterized in that the culture of the collected microorganism is performed by using glucose or pyruvic acid, NH ₄ ⁺ , Ca
It is characterized in that the reaction is carried out at a temperature of 20 to 40 ° C. and a pH of 7 to 8 using a medium containing ²⁺ , Mg ²⁺ , Fe ²⁺ and PO ₄ ^2- as a culture medium.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below. As the odor to be deodorized by microorganisms in the present invention, those containing ammonia, phenol, and cresol are typically exemplified. Complex odor containing these components,
For example, it occurs in compost facilities and foundries. In addition,
In the present invention, the odor to be treated is not limited to those exemplified above, and other single or combined odors can be naturally treated. As described above, the microorganisms that decompose the odor are collected from soil or drainage near the source of the odor. The collection place is arbitrary as long as it is near the source, but it is desirable to collect from a place where the odor is likely to come into contact. If microorganisms are collected at the above-mentioned collection place, microorganisms suitable for the odor component grow in the place by contact with the actual odor, and it is possible to easily cope with deodorization of the complex odor.

[0006] By the way, the microorganisms collected from the soil and the like can be said to be suitable for odor as a type of microorganism, but the activity thereof is not sufficient for decomposing odor components. Culture in a suitable medium prior to fixation. As the medium, glucose or pyruvic acid (5 mM or less), NH ₄ ⁺ , C
Those containing a ²⁺ , Mg ²⁺ , Fe ²⁺ and PO ₄ ^2- are most suitable. Thereby, not only ammonia-oxidizing bacteria and nitrite-oxidizing bacteria that decompose ammonia, but also microorganisms such as aromatic decomposers that decompose phenol and cresol can be satisfactorily grown. The medium may contain other components other than the above, but each of the above components is an essential component as a nutrient source for culture. In addition, the concentration of each component is not particularly limited in the present invention, and can be appropriately determined according to, for example, the type and concentration of the odor component. When culturing using the above medium, 20
It is desirable to carry out at a temperature of の 40 ° C. and a pH of 7〜8. The microorganisms sufficiently cultured in this way are fixed to a microorganism deodorizing device for deodorizing.

An example of this deodorizing device will be described with reference to FIG. The deodorizing apparatus has a deodorizing tank 1 for storing a carrier 1a such as andosol, humus, and zeolite. An odor introduction pipe 2 is connected to an upper side wall of the deodorizing tank 1, and a lower side of the deodorizing tank 1. The exhaust pipe 3 is connected to the side wall. In addition, a water pipe 4 for watering the deodorization tank 1 is disposed above the deodorization tank 1, and a water supply pipe 5 and a circulating water supply pipe 6 are connected to the water pipe 4. I have. The circulating water supply pipe 6 is
It is connected to a water storage tank 7 juxtaposed with the deodorization tank 1 via a watering pump 8. In the water storage tank 8, the deodorizing tank 1
The water storage tank 8 and the collecting unit 9 are connected by a collecting pipe 10 so that the water that has passed through and reached the collecting unit 9 on the bottom side can be collected and reused as sprinkling water.

Further, as a method for immobilizing microorganisms on the above-mentioned microorganism deodorizing apparatus, there are exemplified a method of spraying the carrier or mixing with water in a water storage tank and spraying the carrier together with the water. The invention is not limited to a specific method for immobilizing microorganisms. In a deodorizing device in which microorganisms are immobilized, an odor is introduced as in the conventional case, and the odor components are decomposed by the microorganisms. However, in this deodorizing device, microorganisms are collected from the vicinity of the odor source and appropriate cultivation is performed.Therefore, the odor can be satisfactorily decomposed from the beginning of operation. Good deodorization is achieved by a plurality of microorganisms adapted to the odor.

[0009]

An embodiment of the present invention will be described below. At the odor source, ammonia 20ppm, phenol 3pp
m, an odor containing an odor component of 3 ppm of cresol is generated. The above-mentioned odor is constantly in contact with the soil near this odor source, and microorganisms are collected from this soil.
Separate ammonia-oxidizing bacteria and nitrite-chlorinating bacteria were prepared for comparison. These microorganisms are listed in Table 1.
Were cultured for 4 days in a medium having the components shown in (1) at a temperature of 30 ° C. and a pH of 7.

[0010] The culture solution 5 obtained by the method of the invention obtained as described above.
m ³ and 5 m ³ of the culture solution obtained by the comparative method were sprayed on a carrier 1a (150 m ³ ) of a deodorizing device of the same type as that shown in FIG. 1 and separately prepared to remove the odor of 750 m ³ / m ^3.
It was introduced into the deodorization tank 1 in the amount of in. The components of the exhaust gas passing through each deodorizing tank 1 were measured, and the results are shown in Table 1. Table 1
As is clear from the results, according to the method of the present invention, the complex odor is satisfactorily deodorized. On the other hand, the device according to the comparative method was inferior in deodorizing ability, and almost no deodorizing effect was obtained depending on odor components.

[0011]

[Table 1]

[0012]

As described above, according to the operation method of the microorganism deodorizing apparatus of the present invention, microorganisms are collected from soil or wastewater near the source of odor, and after culturing the microorganisms,
Since the odor component is fixed to the deodorizing device, microorganisms suitable for the odor can be secured, and the odor component can be reliably and satisfactorily decomposed. Also, the culture of the collected microorganisms, glucose or pyruvic _{^{acid, NH 4 +, Ca 2+,}} Mg 2+, liquid as medium containing Fe ²⁺ and PO ₄ ^2-, temperature 20 to 40 ° C., p
Under the conditions of H7 to H8, the microorganisms corresponding to the complex odor can be efficiently proliferated, and the acclimatization period can be short, and the microorganism deodorizing apparatus can be started up early.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an example of a microorganism deodorizing device used in one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deodorizing tank 1a Carrier 2 Odor introduction pipe 3 Exhaust pipe 4 Sprinkling pipe 7 Water storage tank

Claims (2)

[Claims] 1. A method for operating a microorganism deodorizing device for introducing an odor and deodorizing by the action of a microorganism, wherein the microorganism is collected from soil or wastewater near the source of the odor, and the microorganism is cultured. Operating method of a microorganism deodorizing device characterized by being immobilized 2. The cultivation of the collected microorganism is performed using glucose or pyruvate, NH ₄ ⁺ , Ca ²⁺ , Mg ²⁺ , F
The solution containing e ²⁺ and PO ₄ ^2-
The method for operating a microorganism deodorizing apparatus according to claim 1, wherein the method is performed at 40 ° C and a pH of 7 to 8.