JPS61118189A - Method for accelerating action of microbe - Google Patents

Abstract

PURPOSE:To activate waste water treatment by microbes such as a activated sludge process and night soil treatment and to activate the action of microbes in soil by adding a specified amt. of saponin into a suspension of microbes. CONSTITUTION:To a suspension of microbes, 0.2-0.001% saponin is added. Although any saponin can be used as the saponin, the sap extracted from yucca, a plant, and contg. saponin and sap components is preferably used. Besides, the bacteria in soil or all the treating liq. contg. microbes such as the treating liq. contg. sludge in a sewage plant, the treating liq. in the night soil treatment, and the waste water treating liq. in a general chemical industry can be used as the suspension of microbes. All the microbes -such as bacteria of Zoogles, etc., Protozoa of Flagellata, etc., and a water mite which are generally considered to take a waste water treating action can be exemplified as the microbes. The action of microbes is activated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for promoting the activity of microorganisms. Specifically, it relates to wastewater treatment using microorganisms, such as activated sludge method and excrement treatment method, and methods for more efficiently carrying out the activities of microorganisms in soil.

[Prior Art] Conventionally, wastewater treatment using microorganisms has been widely practiced. Examples include an activated sludge method using aerobic bacteria and a wastewater treatment method using anaerobic bacteria. All of these methods treat sludge in wastewater by allowing microorganisms to decompose it. The rate of decomposition by these microorganisms depends on the type and number of microorganisms, temperature, oxygen content, moisture, etc. Conventionally, the only way to activate microbial activity in wastewater treatment was to increase the amount of dissolved oxygen or adjust the temperature.

[Problems to be solved by the invention] Therefore, the present inventors have conducted extensive studies on a method that can be activated simply by adding certain additives, without adjusting the amount of oxygen, temperature, pH, etc. Ta. As a result, they discovered that the activity of microorganisms can be further activated by adding a certain amount of a special compound, and have completed the present invention.

[Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention, 0.2 to 0.001% saponin is added to the suspension of microorganisms.

[Effect] By adding 0.2 to 0.001% of saponin, the activity of microorganisms becomes more active and wastewater treatment is further promoted.

[Structure of the invention] In the present invention, saponin is added to the liquid in which microorganisms are suspended.
The main point is to add ~o,ooi%, preferably 0.2 to 0.001%, particularly preferably 0.2 to 0.05%. There are various kinds of saponins, and any of them can be used in the present invention, but in particular, the sap extracted from the plant Physalis contains saponin and sap components, and this sap is not added. However, a trowel is also preferable.

Although the reason for this is not completely clear, it is thought that components other than saponin in the sap of Yacca may activate the function of saponin. In addition, microbial suspensions include treatment liquids containing sludge in soil or sewage treatment plants, treatment liquids for excrement treatment, wastewater treatment liquids in general chemical industries, wastewater treatment liquids in food processing factories, etc.
Refers to all wastewater treatment liquids such as wastewater treatment liquids in paper factories and textile factories that contain microorganisms.Specific examples of microorganisms include Zoog Iea.
, pseudomonas S.A.
All microorganisms that are normally thought to have a wastewater treatment effect, such as bacteria such as 1 cat igenes, protozoans such as flagellates and ciliates, as well as rotifers, blisters, water mites, and water mites, can be mentioned. Although it is not clear why adding saponin to such a suspension of microorganisms promotes microbial activity, it is thought that saponin has some positive effect on the growth of microorganisms. The amount of saponin added needs to be 0.5 to 0.001%, and if it is more than 0.5%, the activity will be inhibited. Moreover, if it is less than 0,001%, there is almost no difference from adding no saponin.

[Example] 1%, 0.1%, 0.01%, 0°001% of L saponin
,0.・Make a solution containing 0001% and add 30rrl of this
Place each in a petri dish, add 1 m of microorganism suspension, and cut into 9 pieces of approximately 18 mm width.
A 5 mm film was inserted, and the state of leaching of the gelatin film on the film surface was examined. Regarding the leaching state of the gelatin film, the silver particles dispersed within the gelatin decrease with the leaching of the gelatin, and the film gradually becomes transparent, so the difference in the concentration was investigated. For comparison, two samples were used: one in which no microbial suspension was used, and one in which only the microbial suspension was placed in pure water.

These were placed in a thermostat at 30°C, and after 10 hours, the films were taken out, dried, and their concentrations were examined.

Beard 1 (1) With saponin alone, no release of silver particles was observed at any concentration, and gelatin did not dissolve.

(2) A mixture of saponin and microorganism suspension dissolves gelatin well, and 0.1% is the best among each concentration;
The more intense the concentration, the less effective it is.

0.0001% (10) is not much different from microorganism suspension only. In the case of 1% solution, leaching is slowest.

From the above results, it was found that adding a constant amount of saponin promoted the activity of microorganisms, and the leaching power of the gelatin film progressed further.

Claims (1)

[Claims] A method for promoting the activity of microorganisms, which comprises adding 0.2 to 0.001% saponin to a suspension of microorganisms.