KR-102960851-B1 - Method and apparatus for aeration of livestock sewage treatment tank

Abstract

The present invention relates to a method and apparatus for aeration of a livestock wastewater treatment tank in which, in the treatment of livestock wastewater, aeration is not performed at the bottom of the livestock wastewater treatment tank, but a certain amount of livestock wastewater is aerated at the top of the treatment tank and then returned to the treatment tank to increase the amount of dissolved oxygen. The present invention is carried out by installing an aeration tank on the upper side of a livestock wastewater treatment tank filled with livestock wastewater, pumping the livestock wastewater from the livestock wastewater treatment tank into the aeration tank by means of a pump, installing aeration pipes in multiple layers in the aeration tank to aerate the livestock wastewater, and repeating the process of moving the livestock wastewater aerated in the aeration tank to the livestock wastewater treatment tank.

Inventors

• 이선석

Assignees

• 주식회사 보성

Dates

Publication Date

20260507

Application Date

20230424

Claims (2)

1. A livestock wastewater treatment tank (10) in which livestock wastewater is collected is provided, An aeration tank (20) is provided above the livestock wastewater treatment tank (10), and the amount of livestock wastewater filled into the aeration tank (20) is less than the amount of livestock wastewater filled into the livestock wastewater treatment tank (10). A multi-layered air diffuser (30) is installed inside the aeration tank (20), and air is supplied to the air diffuser (30) from an air compressor (40). The livestock wastewater from the livestock wastewater treatment tank (10) is supplied to the bottom of the aeration tank (20) by a pump (11), and A livestock wastewater treatment tank aeration device characterized by being configured such that livestock wastewater, aerated in the aeration tank (20), is discharged to the livestock wastewater treatment tank (10) through the discharge hose (21).
2. A process of transferring livestock wastewater collected in a livestock wastewater treatment tank (10) to an aeration tank (20) having a smaller capacity than that of the livestock wastewater treatment tank (10), and A process of bringing livestock wastewater in an aeration tank (20) into contact with air aerated in a multi-layered diffuser (30), and A process of increasing the dissolved oxygen in the livestock wastewater of the livestock wastewater treatment tank (10) by repeating the process of transferring livestock wastewater that has come into contact with air by aeration in the aeration tank (20) to the livestock wastewater treatment tank (10), and A method for aerating a livestock wastewater treatment tank, characterized by performing a process of transferring livestock wastewater, in which foreign substances have settled in the livestock wastewater treatment tank (10), to liquid fertilizer.

Description

Method and apparatus for aeration of livestock sewage treatment tank The present invention relates to a method and apparatus for aeration of a livestock wastewater treatment tank in which, in the treatment of livestock wastewater, aeration is not performed at the bottom of the livestock wastewater treatment tank, but a certain amount of livestock wastewater is aerated at the top of the treatment tank and then returned to the treatment tank to increase the amount of dissolved oxygen. In livestock farms, solid and liquid livestock manure, such as animal excrement, is inevitably discharged, and While solid livestock manure is used as compost on farmland after undergoing a composting process using microbial decomposition, liquid manure and wastewater generated during the cleaning of livestock barns (hereinafter referred to as "livestock wastewater") are difficult to transport and treat, and there are also problems with directly spraying them onto farmland due to reasons such as foul odors. However, livestock wastewater can be used to produce liquid fertilizer through a decomposition method using aerobic microorganisms. In order to decompose livestock wastewater using aerobic microorganisms, conditions such as nutrient sources, temperature, moisture, and air (oxygen) must be provided so that the aerobic microorganisms can be active. Since the liquid livestock manure contains some feces, it is sufficient as a nutrient source for the microorganisms. Additionally, since heat is generated when microorganisms decompose organic matter, the temperature conditions are also sufficient. Furthermore, since the liquid livestock wastewater inherently contains a large amount of moisture, the moisture is also sufficient for the activity of the microorganisms. Therefore, the key to creating conditions for the vigorous activity of microorganisms is to supply sufficient air (oxygen) to the livestock wastewater treatment tank to increase the amount of dissolved oxygen within the tank. To this end, by installing an air diffuser at the bottom of a livestock wastewater treatment tank of a certain capacity to aerate the livestock wastewater, the livestock wastewater transferred to the treatment tank comes into contact with the air aerated from the diffuser, thereby increasing the dissolved oxygen content to allow for sufficient fermentation, after which it undergoes a sedimentation process to settle foreign substances. In this method, since the aeration pipes are installed at the bottom of the large-capacity livestock wastewater treatment tank, foreign substances contained in the livestock wastewater settle at the bottom and clog the aeration pipes, which causes a problem where aeration is not properly carried out in the aeration pipes. Furthermore, even if the amount of dissolved oxygen is increased by the aeration of the aeration pipes, foreign substances cannot settle due to the circulation of the livestock wastewater inside the treatment tank and are circulated, resulting in a problem that requires a separate sedimentation process. FIG. 1 is a configuration diagram of an embodiment of the present invention. FIG. 2 is a cross-sectional view of a key part of the present invention. The present invention increases the dissolved oxygen of livestock wastewater by moving away from the method of installing an aeration pipe at the bottom of a livestock wastewater treatment tank where a large amount of livestock wastewater is treated, and by repeating the process of transferring a certain amount of livestock wastewater filled in the livestock wastewater treatment tank to a small-capacity aeration tank separately installed above the livestock wastewater treatment tank to perform aeration and then returning it to the livestock wastewater treatment tank. The present invention allows for increasing the dissolved oxygen of livestock wastewater filled in a large-capacity livestock wastewater treatment tank while using a small-capacity aeration tank, by transferring the livestock wastewater to a separately installed aeration tank for aeration without installing an aeration pipe in the livestock wastewater treatment tank, and then returning it to the livestock wastewater treatment tank. The present invention will be described in detail based on the attached exemplary drawings. The present invention is configured to have a livestock wastewater treatment tank (10) in which livestock wastewater is collected, and an aeration tank (20) above the livestock wastewater treatment tank (10), wherein the amount of livestock wastewater filled in the aeration tank (20) is smaller than the amount of livestock wastewater filled in the livestock wastewater treatment tank (10), and a multi-layered air diffuser (30) is installed inside the aeration tank (20), wherein air is supplied to the air diffuser (30) from an air compressor (40), and the livestock wastewater of the livestock wastewater treatment tank (10) is supplied to the bottom of the aeration tank (20) by