JPS6274490A - Method for treatment of sewage utilizing bacteria - Google Patents

Abstract

PURPOSE:To promote the propagation of bacteria and to stabilize the quality of water to be treated, by arranging a contact material formed of a material having magnetic force to a sewage treatment route. CONSTITUTION:Excretion flows in a primary treatment chamber 4 where the solid substance in said excretion is sedimented and decomposed while the supernatant liquid is made to flow in the next secondary treatment chamber 5. The sewage having flowed in the secondary treatment chamber 5 is aerated and stirred by air bubbles from an air diffusion pipe 7. At this time, bacteria are also simultaneously stirred to be sufficiently contacted with a contact material having magnetic force formed into a reticulated cylindrical shape and receive magnetic force to propagate. Bacterial actively decompose the org. substance of sewage and the supernatant liquid of the decomposed sewage flows in a water feed control tank 2 to be made to quantitatively flow in a soil treatment tank 3 by an air lift pump 8. River sand 13 is provided in the treatment tank 3 in a state sandwiched between magnetic mats 12, 14. By this method, purifying capacity is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for treating sewage such as frozen ground, domestic wastewater, industrial wastewater, etc. using the organic matter decomposition action of microorganisms.

[Conventional technology]

Over the years, various innovations and improvements have been made to sewage treatment methods, and in recent years, treatment has come to be carried out using systems that are divided into several treatment steps that utilize the organic matter decomposition action of microorganisms.

In other words, in the sedimentation tank of the septic tank into which sewage flows, anaerobic microorganisms decompose and decompose the supernatant liquid, and aerobic microorganisms pre-treat the supernatant, and air is pumped into the soil treatment tank or aeration tank to aerate and agitate. Activated dirt containing a large amount of aerobic microorganisms and lrj water are mixed and brought into contact with each other while using a sliding door. After that, activated soil was used to precipitate and decompose the waste in the final settling tank, and the supernatant water was discharged.

[Problem that the invention seeks to solve]

However, with this water treatment method that utilizes the organic matter decomposition action of microorganisms, it is necessary to expand the facility to 7 knobs of treatment capacity due to the increase in the amount of sewage inflow, and it is also necessary to deal with loads such as changes in the quality of sewage. As a result, the quality of the treated water becomes unstable, making it difficult to manage each part from the TR3 water flow to the discharge of treated water, and the discharge of treated water causes water pollution problems such as contamination of rivers. was there.

[Means for solving problems]

The present invention was made to solve this conventional problem, and its purpose is to utilize the conventional organic matter decomposition action of microorganisms, and also to increase the growth and activity of microorganisms by magnetic force, which has been discovered through recent research. The purpose of the present invention is to provide a sewage treatment method using microorganisms that improves the sewage treatment ability and stabilizes the quality of treated water by reducing the In the T75 water treatment method, a contact material made of a material with magnetic force is placed in the TR3 water treatment path, and the magnetic force promotes the growth of microorganisms, allowing for organic matter decomposition and higher quality treated water to be discharged. did.

[Effect]

Therefore, in the present invention, since a contact material made of a magnetic material is provided in the wastewater treatment route, microorganisms multiply and are activated by the magnetic force of the contact material, thereby doubling the response capacity and increasing the amount of wastewater inflow. It is possible to adequately cope with loads such as increases in water and changes in water quality. Moreover, the quality of treated water can therefore be highly stabilized.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, (1) is a septic tank, (2) is a water adjustment tank, and (3) is a septic tank.
) is a soil treatment tank.

The septic tank (1) is separated into two chambers, with the front chamber serving as the primary treatment chamber (4).
, the rear chamber is a secondary processing chamber (5), and this secondary processing chamber (5)
In the room, a large number of contact materials (6) with magnetic force formed in a cylindrical shape with a mesh of 3rn/rn to 5 m1m are installed in an upright position, and the wastewater is aerated and stirred with an aeration pipe (7). . The water supply adjustment tank (2) regulates irregular inflow from the septic tank (1), and quantitatively supplies water to the soil treatment tank (3) using an air lift pump (8).

The soil treatment tank (3) has a chestnut stone (9), a split stone (10), a sand stopper (If),
Magikamabuto (1ri), river sand (13, magnetic mano) (+4), Masago soil (l → deposited in the order of This prevents clogging.

The magnetic nose (lΦ and (lΦ is 3m1m~5m
It is a mat formed of a magnetic material with a mesh size of 1 m/-, and the magnetic contact material (6) RI
The H flux density is about 150 Gauss.

The seven stems of this example have the number of grooves as described above, and the frozen ground that flows into the primary treatment chamber (4) is where the solid matter settles and rots, and the supernatant liquid flows into the next secondary treatment chamber (5). do.

The sewage that has flowed into the secondary treatment chamber (5) is aerated and stirred by the aeration pipe (7), and the microorganisms are also stirred at the same time, making sufficient contact with the contact material (6) and receiving its magnetic force. and multiply. In addition, microorganisms are activated by magnetic force and actively decompose organic matter in wastewater. Then, the supernatant liquid of the decomposed wastewater flows into the water supply adjustment tank (2), and quantitatively flows into the next soil treatment tank (3) by the air lift pump (8). In this soil treatment tank (3), river sand (13
(magnetic pine) (la and (14)/ It is set in a state of being tilted, so that the rising water flow spreads evenly, and the microorganisms in the rising water flow receive magnetic force in the part where the flow velocity is slow. In addition, in combination with the aeration provided by the aeration tube (10), microorganisms proliferate and are activated, resulting in rapid decomposition of organic matter in wastewater. , O, D water quality.

As shown above, according to this embodiment, a cylindrical contact material having magnetic force is provided in the septic tank (1) which is the wastewater treatment route, and the river sand +13 in the soil treatment tank (3) is covered with a magnetic mat (
Since the lilp and (1,0) are provided in a sandwich configuration, microorganisms can receive sufficient magnetic force for growth and activation, and can fully decompose organic matter. Load fluctuations such as changes in water quality can be adequately dealt with without increasing the size of the facility.

In addition, in contrast to the conventional system, where the B, O, and D concentrations in the effluent water are large, unstable, and fluctuate at 10 to 30 ppm, the B, O, and D concentrations in the system implemented this time are 3 ppm or less. It turned out that there was a huge improvement. Therefore, the number of personnel required for culturing microorganisms and adjusting and managing the system, which have been performed in conventional systems, can be greatly reduced.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific method and number of grooves of the present invention are not limited to these embodiments, and design changes may be made without departing from the gist of the present invention. Even if there is, it is within the technical scope of the present invention.

For example, in this example, the magnetic flux density of the magnetic material is 15
Although it is assumed that a magnetic flux density of about 0 Gauss is used, the optimum magnetic flux density can be selected from those with a magnetic flux density of about 100 Gauss to 800 Gauss. Furthermore, the shape and mounting position of the contact material are not limited to the embodiments.

Further, although the inside of the septic tank is divided into two chambers, the present invention is not limited to this, and each chamber may be provided as an independent sedimentation tank or an aeration tank. In addition, air was supplied to the soil treatment tank using an aeration pipe, but the installation of the aeration pipe is not limited to this, and each bank can decide on the installation of the aeration pipe.

Furthermore, although the embodiment has been described using a frozen ground treatment system, the present invention is not limited to this, and can also be applied to the treatment of miscellaneous wastewater from homes, factories, etc.

〔Effect of the invention〕

As explained above, according to the present invention, since magnetic materials are used for the contact material and mat, it promotes the growth of microorganisms that treat sewage, activates organic matter decomposition, and improves the quality of treated water even when the load fluctuates. It is possible to constantly stabilize the water and produce high-quality treated water.

In addition, this eliminates river pollution caused by discharge of treated water and prevents environmental pollution caused by water quality.

Furthermore, since the number of workers etc. can be greatly reduced, running costs can be reduced.

[Brief explanation of drawings]

The figure is an explanatory diagram showing a sewage treatment system according to an embodiment of the present invention. (6): Contact material (1: Magnetic cloak (contact material)

Claims (1)

[Claims] 1) In a wastewater treatment method that utilizes the organic matter decomposition action of microorganisms, a contact material made of a magnetic material is placed in the wastewater treatment path, and the magnetic force promotes the growth of microorganisms and activates the organic matter decomposition action. A sewage treatment method using microorganisms, which is characterized in that the quality of the treated water is stabilized and treated water of higher quality can be discharged.