KR20030087808A - Media for treating system of sewage and wastewater treating system - Google Patents

Abstract

PURPOSE: Provided is wastewater treatment media for making bacillus subtilis effectively multiply. CONSTITUTION: The media(50) comprises a contact media having inner space with a predetermined size, and bacillus subtilis attached on the contact media, wherein the contact media is made of net, bottle, sponge, activated carbon, nylon, zeolite or calcined clay.

Description

MEDIA FOR TREATING SYSTEM OF SEWAGE AND WASTEWATER TREATING SYSTEM}

The present invention relates to a media for a sewage treatment system, and more specifically, sewage treatment for treating sewage, sewage, wastewater, etc. containing organic matter, nitrogen (N) and phosphorus (P) highly, by predominantly Bacillus bacteria. It relates to the media for the system.

Patent No. 0151928 discloses a wastewater treatment system and method for treating wastewater using Bacillus, which is known to have excellent treatment of organic wastewater, as well as to remove nitrogen and phosphorus. have. The present applicant has developed such a patent invention under the trade name of B3 method (Bio-Best-Bacillus System) and is carrying out in the field, and improving and applying the problems caused through continuous technology development.

The sewage treatment system according to the present invention has been proved to be excellent in various treatment facilities. However, when the concentration of influent for treating with sewage is low, it is difficult to stabilize and maintain uniformity of Bacillus bacteria. In addition, small sewage treatment facilities, village sewage treatment facilities and merger septic tanks do not reside in managers or are rarely managed, so the status of Bacillus bacteria is not managed, and thus, wastewater is not effectively treated.

The present invention is to solve the above problems, the purpose of the media for the new type of wastewater treatment system that can effectively dominate Bacillus bacteria in any kind of wastewater treatment system that treats wastewater using Bacillus bacteria. To provide.

1 is a view showing an example of applying the media of the present invention to the wastewater treatment system of Patent No. 0151928;

2 is a view showing an example of applying the media of the present invention to another type of wastewater treatment system.

* Explanation of symbols for the main parts of the drawings

10, 10 ': biological reactor 20, 20': first chamber

22, 22 ': Room 2 24, 24': Room 3

26, 26 ': 4th chamber 30: influent

50: media

According to a feature of the present invention for achieving the above object, it provides a media for the wastewater treatment system for treating wastewater using Bacillus bacteria. The media has a predetermined contact material having a constant internal space and the media containing the Bacillus bacteria coated on the contact material into a biological reaction tank for treating the influent to stabilize the predominance rate of Bacillus bacteria and to maintain uniformity.

In the present invention, the contact material may be one selected from the group consisting of a net, a bottle, a sponge, activated carbon, nylon, zeolite and calcined mud.

In the present invention as described above, the wastewater treatment system includes a biological reaction tank divided into a plurality of threads, and the media may be placed in a chamber for performing an intensive aeration process among the plurality of threads.

Bacillus bacteria hydrolyze not only organic substances but also hardly degradable cellulose, proteins, starches and fats, and directly ingest the ammonia, hydrogen sulfide, and amines, which are odors generated during the treatment of wastewater. Decompose to remove odor. Since Bacillus bacteria have endogenous spores, they can adapt to changes in environmental conditions compared to the microbial group applied to the treatment of wastewater, even if the surrounding environmental conditions change. → Survival is repeated for the same process as spores, so it is possible to maintain high concentration of cells. Since the surface of Bacillus bacteria is covered with a sticky substance, adsorption and aggregation occur well, and the formed floc has good precipitation. In addition, nitrogen or phosphorus contained in the sludge is known to be present in the cells of the spores Bacillus bacteria is not likely to be eluted from the sedimentation basin or sludge concentration tank.

1 is a view showing an example of applying the media according to the present invention to the sewage treatment system of Patent No. 0151928, Figure 2 is applied when operating the media in accordance with the present invention in a sewage treatment system of Patent No. 0151928 The figure shows an example. 1 and 2 are similar to the biological reaction tank (digestion tank) of the patent registration publication No. 0151928, and those skilled in the art can easily predict, understand or implement from the description of the patent. In the following description, a detailed description thereof will be omitted, and description will be made based on parts related to the present invention.

First, referring to FIG. 1, Patent No. 0151928 proposes a system and method for treating sewage water by dominantly culturing Bacillus bacteria described above. Bacillus bacteria are predominantly cultured in a biological reaction tank (digestion tank) 10 divided into four threads 20, 22, 24, and 26, which are formed by the differential aeration made by the threads and the sludge conveyance by internal and external transport. . The differential aeration of the bioreactor 10 is concentrated in the first chamber 20 to about 70% of the total aeration of the bioreactor 10, and the three chambers 22, 24, and 26 are 30% remaining. Attenuate aeration of 15%, 10% and 5%, respectively. Therefore, the amount of dissolved oxygen can maintain a certain concentration of only the first chamber 20, and the remaining three chambers 22, 24, and 26 only have very low dissolved oxygen, so that normal growth of aerobic bacteria is difficult. Instead, coliform bacteria that can grow well under low oxygen concentrations will breed. In addition, the sludge of the final chamber of the bioreactor 10 was recycled 300%, returned 100% from the primary sedimentation tank, and three times the inflow flow rate from the secondary sedimentation tank (not shown) of the activated sludge process, which is the second treatment step. By recycling and operating at a total return rate of about 700% to increase the retention time of the microorganisms, it is a method of screening and growing strains that can grow while enduring in such an environment.

On the other hand, Figure 2 is a modification of the operating method in the system as described above, the biological reaction tank 10 'of this wastewater treatment system to supply the influent water 30 while maintaining the first chamber 20' in anoxic conditions, By carrying out the differential aeration in the second chamber 22 ', the third chamber 24' and the fourth chamber 26 'and carrying out the internal and external transport, nitrite nitrogen and nitrogen generated in the wastewater treatment process The nitrate nitrogen is decomposed by the organic material introduced from the first chamber 20 '. In this system, the second chamber 22 ', the third chamber 24', and the fourth chamber 26 'allow differential aeration, while the second chamber 22' is the concentrated aeration, the third chamber 24 ') And the fourth chamber 26' are attenuated. In other words, the differential aeration of the second chamber 22 ', the third chamber 24' and the fourth chamber 26 'in this system is the first chamber, the second chamber and the third chamber in the wastewater treatment method of Patent No. 0151928. It is to implement a method corresponding to the differential aeration of.

In the wastewater treatment system as described above, the present invention puts a media (50) coated with Bacillus bacteria so as to optimize the treatment efficiency of the wastewater. That is, in the system of FIG. 1, the media 50 is placed in the first chamber 20, and in the system of FIG. 2, the media 50 is inserted in the second chamber 22 ′ to stabilize the predominance of Bacillus bacteria and to maintain uniformity. Do it. Such a media 50 can be very usefully applied when the concentration is low, such as sewage. This media 50 solves the problem of difficulty of concentrated decomposition when providing only a simple space (room). That is, the median 90 is to provide a space for Bacillus bacteria. The media 50 is placed in a chamber that activates Bacillus bacteria, that is, a chamber 20, 22 'which performs a concentrated aeration process like the first chamber 20 of FIG. 1 or the second chamber 22' of FIG. .

The contact material of the media 50 may be a net, a bottle, a yogurt bottle, a sponge, a nylon, a porous material (activated carbon, zeolite, etc.), calcined mud, or the like. Such media are cultured in a medium after selecting Bacillus as a spawn by a method such as decomposition by high frequency sound. And by maintaining a certain condition in the deposition tank, such as the above contact material and the coating agent is added to the Bacillus bacteria are coated on the contact material and incubated, and the contact material is dried to complete the media.

As described above, the media for the wastewater treatment system according to a preferred embodiment of the present invention has been described, but this is merely described, for example, and various changes and modifications can be made without departing from the technical spirit of the present invention. Those skilled in the art will understand well.

According to the media for the sewage treatment system according to the present invention, even if the concentration of influent water for treatment with sewage is low, it is possible to adequately secure the number of cells of Bacillus bacteria, and to ensure a stable treatment water quality by maintaining the necessary advantage rate can do.

Claims (3)

In the media for wastewater treatment system for treating wastewater using Bacillus bacteria, A predetermined contact member having a constant internal space; The media for the wastewater treatment system is characterized in that the media containing the Bacillus bacteria coated on the contact material is installed in a biological biological reaction tank for treating the wastewater to ensure a stable number of cells of Bacillus bacteria to maintain a constant dominant rate. . The method of claim 1, Media for the wastewater treatment system, characterized in that the contact material is one selected from the group consisting of a net, a bottle, a sponge, activated carbon, nylon, zeolite and calcined mud. The method according to claim 1 or 2, The wastewater treatment system includes a biological reaction tank divided into a plurality of chambers, and the media is placed in a chamber that performs a concentrated aeration process among the plurality of chambers.