KR980009141A - Aerobic treatment method of organic sewage and its apparatus - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

Organic wastewater treatment method and apparatus.

2. The technical problem that the invention is trying to solve.

A method of treating organic sewage with little abrasion of the carrier and cultivating microorganisms in the carrier layer while passing through the carrier layer by adding the entire amount of the carrier required at the start of operation, and passing the carrier layer repeatedly; Providing a device.

3. Summary of the solution of the invention.

Organic sewage is introduced into the aerobic treatment tank 1, and a net-like body 2 for preventing passage of the carrier 3 in the tank 1 is horizontally installed horizontally in single or multiple stages so that the inside of the tank 1 is up and down. The chamber is divided into several chambers in the direction, and each chamber is filled with a floating microorganism-immobilized carrier 3, and the water to be treated passes through the carrier 3 layer of each chamber, and from the bottom of the tank 1, An acidizer is performed, and the to-be-processed water is circulated in the tank 1 to the circulation pump 7, and a purification process is performed.

4. Important uses of the invention

Used for biological purification of various organic sewage such as sewage.

Description

Aerobic treatment method of organic sewage and its apparatus

1 is a block diagram showing an embodiment of the present invention.

2 is a configuration diagram showing an embodiment of the present invention.

3 is a configuration diagram showing an embodiment of the present invention.

＊ Explanation of symbols for main parts of drawing

1: aerobic treatment tank 1A: upper chamber of aerobic treatment tank

1B: Central chamber of aerobic treatment tank 1C: Lower chamber of aerobic treatment tank

2: reticulated body 3: carrier

4: diffuser 5: blower

6: inlet pipe 7: circulating pump

8: circulation pipe 9: sewage supply pipe

10: sedimentation tank 11: partition wall

12: flow stream 13: drain pipe

14: return pipe 15: valve

16: partition wall 17: flow path

18: two-hole mouth 19: opening

20: return pipe

[Technical Field to which the Invention belongs and Prior Art in the Field]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating organic sewage and a device for biologically highly purifying various organic sewage such as sewage by a very reasonable treatment method and apparatus.

Conventionally, a particulate material made of an organic polymer compound is used as a microbial fixation carrier (hereinafter simply referred to as a "carrier"), and a 5 to 70% equivalent amount of carrier is immersed in a treatment tank to purify sewage. This is based on a flow box in which an acid group and a return flow are performed in the treatment tank, and the carrier is freely moved to contact the water to be treated.

In the case of purifying organic wastewater with a conventional flow box, since the carrier is flowed together with the water to be treated, it requires a large power, and at the time of return, the carrier is swept away from the treatment tank wall and wears badly, resulting in insufficient durability. There was.

In addition, since the initial stage of the carrier is not proliferated, the specific gravity is small, and the surface does not turn around because it floats near the surface of the water, a culture tank for culturing the microorganism is attached to the carrier in advance.

In addition, the amount of the carrier is correlated with the propagation of microorganisms, and a maximum amount of about 70% is required for the feeding of up to 70%, and the labor takes time and the processing capacity is limited during this time.

[Technical problem to be achieved]

In view of the above, the present invention has almost no abrasion of the carrier and at the same time, puts the entire amount of the carrier required at the start of the operation, performs microbial culturing of the carrier layer while driving the water, and passes the carrier layer repeatedly. It is an object of the present invention to provide a method and apparatus for treating organic sewage so that the decomposition ability can be exerted quickly.

[Configuration and Function of Invention]

In order to solve the above-mentioned problems, the method according to the first chamber of the present invention comprises introducing organic sewage into an aerobic treatment tank and horizontally installing a net-like body preventing the passage of the carrier in the treatment tank horizontally in a single layer or multiple layers. The inside of the treatment tank is divided into a plurality of rooms in the up and down direction, each of which is filled with an immobilized microorganism immobilizing carrier, and the treated water is passed through the carrier layer of each chamber, and at the same time, the air is discharged from the bottom of the treatment tank. V), and the purified water is circulated in the treatment tank to perform the purification treatment.

In addition, the method according to the second embodiment of the present invention introduces organic sewage into an aerobic treatment tank which is partitioned with several treatment tanks in the horizontal direction, and monolayers or multi-layered net-like bodies for preventing passage of carriers in each treatment tank. Vertically and horizontally to partition each treatment tank into several rooms in the vertical direction, fill each room with floating microbial fixation carriers, pass the treated water through the carrier layer in each room, The acid treatment is carried out from the bottom, and the water to be treated is circulated in each tank, and the purified water is carried out in such a manner that the water to be processed flows from the tank in the front part to the tank in the rear part in order.

In the method according to the third embodiment of the present invention, in the method according to the second embodiment, a part of the water to be treated is returned from the treatment tank at the rearmost portion of the aerobic treatment tank to the tank at the foremost portion to repeat the purification process. It is characterized by.

In addition, the method according to the fourth embodiment of the present invention introduces organic sewage into an aerobic treatment tank which is partitioned into several tanks in the horizontal direction, and horizontally blocks a net-like body that prevents the passage of the carrier in each tank. Each chamber is partitioned into several rooms in the vertical direction, filled with microbial stabilizing carriers in each room, and the water to be treated passes through the carrier layer of each room and is removed from the bottom of each tank. The acid treatment is performed so that the water to be treated flows in order from the treatment tank in the foremost portion to the treatment tank in the rearmost portion, and a portion of the water to be treated is returned from the treatment tank in the rearmost portion to the treatment tank in the foremost portion to repeat the purification process. It is.

The apparatus according to the fifth embodiment of the present invention is a net-like body in which an aerobic treatment tank prevents the passage of a carrier horizontally arranged in a single layer or a multi-layer, and is divided into several rooms in the vertical direction. At the same time as the microorganism immobilization carrier having the same is filled, an air diffuser is installed at the bottom of the treatment tank, and a circulation device for circulating the water to be treated in the treatment tank is installed in the treatment tank.

In addition, the apparatus according to the sixth embodiment of the present invention has a net shape in which the aerobic treatment tank is partitioned into several treatment tanks in the transverse direction by the partition wall, and the inside of each treatment tank prevents passage of the horizontally arranged carrier horizontally in a single layer or multiple layers. Sieve divided into several rooms in the vertical direction, filled with floating microorganism immobilizing carrier in each room, and an air diffuser is installed at the bottom of each treatment tank, and treated water in each treatment tank in each treatment tank. The circulation device which circulates is installed, and the part which transfers the to-be-processed water to a subsequent treatment tank is provided in the said partition wall.

Moreover, the apparatus which concerns on 7th Embodiment of this invention conveys a part of the to-be-processed part of a rearmost treatment tank to the treatment tank of a front part in the treatment apparatus of the said 6th embodiment to the rearmost treatment tank of an aerobic treatment tank. Means are provided.

The apparatus according to the eighth embodiment of the present invention has a net shape in which the aerobic treatment tank is partitioned into several treatment tanks in the transverse direction by the partition wall, and the inside of each treatment tank prevents passage of the horizontally arranged carrier horizontally in a single layer or multiple layers. Sieves are partitioned into several chambers in a vertical direction, and each room is filled with a floating microorganism-immobilized carrier, an air diffuser is installed at the bottom of each treatment tank, and the treatment is performed on the partition wall with a subsequent treatment tank. The part which transfers water is provided, and the conveyance means which conveys a part of to-be-processed water to the treatment tank of the foremost part is provided in the treatment tank of a rear part.

Therefore, in the inventions according to the first and fifth embodiments, the carrier layer is formed in each chamber because the carrier in the aerobic treatment tank is partitioned into a net-like body that prevents the passage of the carrier. The carrier is in a floating state but is in the compartments of the upper and lower reticulated bodies and there is no movement.

In addition, since the water to be treated circulates in the tank, it passes through the carrier layer that aerobicly decomposes organic impurities, so that the contact number of microorganisms inside and outside the carrier increases, thereby promoting purification. Reticulated bodies and carriers are prevented from being blocked by the flow of acid groups and water to be treated.

In addition, the present invention according to the second and sixth embodiments is used in a large aerobic treatment tank or the like requiring a large treatment capacity, and the aerobic treatment tank is partitioned with several treatment tanks in the horizontal direction, and each treatment with a membrane is applied. The tank has the same function as the embodiments of the present invention, and flows the water to be processed from the treatment tank at the foremost part to the treatment tank at the rear part in order to increase the number of microorganisms in the carrier layer to increase the treatment capacity. have.

In addition, the invention according to the third and seventh embodiments has the same function as the invention according to the second and sixth embodiments. When the aerobic treatment tank is partitioned into several treatment tanks, the treatment tank receives circulation in each treatment tank. After the water to be treated is circulated in the rearmost tank, a part of the water to be treated is returned to the treatment tank in the foremost portion and subjected to repeated purification treatment, whereby aerobic decomposition can be performed more efficiently.

Further, according to the fourth and eighth embodiments of the present invention, since the carrier in the aerobic treatment tank is partitioned into a net-like body that prevents the passage of the carrier, a carrier layer is formed in each room, and the carrier is in a floating state, but the upper and lower nets are formed. It is in the compartment of the upper body and there is no movement. In addition, although the reticulated bodies and the carrier are prevented from being blocked by the flow of the acid groups and the treated water, a part of the treated water in the rearmost part is treated in the foremost part after passing through the carrier layer that aerobicly decomposes each group of organic impurities. Since the tank is returned to the tank again and subjected to repeated purification treatment, aerobic decomposition can be efficiently carried out in the same manner as circulating the water to be treated in each treatment tank.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on drawing.

1 is a configuration diagram showing an example according to the first and fifth embodiments of the present invention, and FIG. 2 is a configuration diagram showing an example of the second, third, sixth, and seventh embodiments.

In FIG. 1, 1 is an aerobic treatment tank, and the mesh-like body 2 is horizontally installed in the aerobic treatment tank 1, and the upper chamber 1A, the central chamber 1B, and the lower chamber ( 1C).

Although it is divided into three stages in the figure, it can also be divided into a single | mono layer or a multilayered room.

In the upper chamber 1A, the central chamber 1B, and the lower chamber 1C, a carrier layer loosely filled with a floating carrier 3 having aerobic microorganisms that aerobicly decomposes organic impurities contained in the water to be treated. Is formed.

The mesh of the said net-shaped body 2 is formed in the magnitude | size which prevents the passage of the support | carrier 3, and the support | carrier 3 does not come out from the room | chamber.

The carrier 3 is not particularly limited as long as the carrier 3 is a floating body, but known materials such as foams or processed articles of organic polymer compounds may be used. Among them, a material having a suitable elasticity and strength for the material itself is preferable. In particular, urethane resins are preferable.

For example, an elastic porous granular material such as a flexible polyurethane foam in which a polymer ring of a polyol, which is a main raw material, is made of ether bonds, is foamed by a foaming method for forming a bubble through a plastic such as urethane resin, and cut into a desired shape size. do.

The size is 10-30 mm, and the shape can adopt a square shape, a ball shape, and other various shapes, A square shape is preferable.

When ether-based flexible polyurethane foam is used, it is difficult to be hydrolyzed and sufficiently durable, and since the pores on the inner and outer surfaces are connected to each other, microorganisms are easily incubated into the carrier, making it easy to cultivate and to be treated. Microorganisms do not peel off by water or air flow.

(4) is an air diffuser installed in the bottom of the aerobic treatment tank 1, and air is blown from the blower 5 provided outside the aerobic treatment tank 1 via an air inlet pipe 6. Alternatively, pure oxygen is supplied into the stream, and the diffuser 4 is composed of the diffuser 4, the blower 5, and the blower 6.

(7) is a circulation pump installed at the bottom of the aerobic treatment tank (1), the circulation pipe (8) is connected to the circulation pump (7), the tip of the circulation pipe (8) protrudes on the surface of the lower side It is bent to form a circulation device that can circulate the water to be treated in the treatment tank.

(9) is a sewage supply pipe, (10) is a sedimentation tank which is continuous behind the aerobic treatment tank (1), and the advection port of the aerated treatment from the aerobic treatment tank (1) at the bottom of the partition wall (11). A mouth 12 is formed.

Denoted at 13 is the treated water drain pipe installed in the settling tank 10.

Next, in FIG. 2, the same code | symbol is attached | subjected to the place corresponded to FIG.

In the drawing, the aerobic treatment tank 1 is partitioned into three treatment tanks in the horizontal direction, and may be partitioned into any number of treatment tanks according to the installation scale.

In each treatment tank with a partition, a carrier (3) layer, a circulation pump (7), an acid pipe (4), a blower (5), and an air pipe (by a net-like body 2) similar to the aerobic treatment tank (1). A conveying pipe which branches to the circulation pipe 8 connected to the circulation pump 7 installed at the bottom of the treatment tank in the rearmost part and conveys it to the upper part of the treatment tank in the foremost part; A pipe 14 is provided so that a part of the water to be treated can be conveyed from the rearmost tank to the upper part of the treatment tank in the foremost part.

In the drawing, the circulation pump 7 and the circulation pipe 8 of the treatment tank in the rearmost part share the circulation pump and the conveying pipe 14 for conveyance, but of course, they can be installed separately.

Numeral 15 denotes a valve provided in the circulation pipe 8 and the transfer pipe 13 of the treatment tank in the rearmost portion.

At the boundary of each tank, a flow path 17 of the water to be treated which is partitioned on all four sides is formed at the center of the partition wall 16, and the flow path 17 passes through the lower portion of the flow path 18 through the bottom of the front treatment tank. Is formed, and the upper part is comprised of the upstream part formed in the communication shape extended vertically upward opening 19 to the upper part of the process tank of the back, and the to-be-processed water to each process tank flows downward.

The flow-through part is not limited to this configuration, and may simply allow the overflowing water to flow from the upper portion of the partition wall of each treatment tank.

The boundary between the treatment tank in the rearmost part and the settling chamber 10 is the same as that in which the airflow port 12 is formed at the bottom of the partition wall 11.

Next, in FIG. 3, the same code | symbol is attached | subjected to the place corresponded to FIG. 1, FIG.

In the figure, the aerobic treatment tank 1 is partitioned into three treatment tanks in the horizontal direction, but may be partitioned into any number of treatment tanks according to the installation scale.

Each treatment tank with a partition is composed of a carrier (3) layer and a diffuser (4), a blower (5), and a blower pipe (6) by a net-like body (2) similar to the aerobic treatment tank (1). There is no circulation device in each treatment tank.

And the conveying means which consists of the circulation pump 7 and the conveyance pipe 20 which conveys a part of to-be-processed water to the treatment tank of the foremost part is provided in the treatment tank of the rearmost part. Moreover, the same flow part as FIG. 2 is comprised in the boundary of each set.

[Effects of the Invention]

According to the present invention, the carrier is in a floating state, but is located in the upper and lower sections of the net-shaped body, and since only the water to be treated passes between the carriers, the carrier is not abraded by flow and has durability. Since the carrier is divided into multiple layers of the net body, the net body is not damaged by the buoyancy and the weight of the carrier and is safe. In addition, since the carrier is not circulated, the initial introduction into the aerobic treatment tank eliminates the need for pure volume even without the growth of microorganisms, and the amount of the carrier is also 30 to 80% of the volume of the aerobic treatment tank. It becomes the quantity equivalent to and can improve aerobic decomposition ability remarkably.

In addition, since the water to be treated passes through the carrier layer repeatedly, it can be efficiently subjected to aerobic treatment.

Claims (8)

Organic sewage is introduced into the aerobic treatment tank, and a net-like body that prevents the passage of carriers in the treatment tank is installed horizontally horizontally in a single layer or multiple layers, so that the interior of the treatment tank is divided into several rooms in the vertical direction. Each room is filled with a floating microorganism-immobilized carrier, the water to be treated passes through the carrier layer in each room, and acid is diffused from the bottom of the treatment tank. The aerobic treatment method for organic sewage, characterized in that the purification process by circulating in the treatment tank. The organic sewage is introduced into the aerobic treatment tank which is partitioned with several treatment tanks in the horizontal direction, and horizontally is installed horizontally in a single layer or multiple layers in each treatment tank to prevent the passage of carriers. Divided into two rooms, each of which is filled with a floating microorganism-immobilizing carrier, passes the water to be treated through the carrier layer of each room, and conducts acid treatment from the bottom of each treatment tank to treat the treated water in each treatment tank. And the purified water treatment is carried out by circulating in the tank at the foremost part and sequentially flowing the water to be treated from the treatment tank at the foremost part to the treatment tank at the rear part. The aerobic treatment method of organic sewage according to claim 2, wherein a part of the water to be treated is returned from the treatment tank at the rearmost portion of the aerobic treatment tank of the aerobic treatment method of organic waste to the treatment tank at the foremost portion, and the purification treatment is repeated. . The organic sewage is introduced into the aerobic treatment tank which is partitioned with several treatment tanks in the horizontal direction, and horizontally is installed horizontally in a single layer or multiple layers in each treatment tank to prevent the passage of carriers. Divided into two rooms, each of which is filled with a floating microorganism-immobilized carrier, passes the water to be treated through the carrier layer of each room, and diffuses from the bottom of each treatment tank, and the rearmost portion from the treatment tank of the foremost part. And a portion of the water to be treated from the rearmost treatment tank to the treatment tank at the foremost part so that the water to be treated is sequentially flowed to the treatment tank of the treatment tank to repeat the purification process. The aerobic treatment tank is divided into several rooms in the vertical direction to prevent passage of the horizontally installed carrier horizontally in a single layer or multiple layers, and each room is filled with a floating microbial stabilizing carrier, and at the same time, the bottom of the treatment tank is filled. An aerobic treatment apparatus for organic sewage, characterized in that an air diffuser is installed in the treatment tank and a circulation device for circulating the water to be treated in the treatment tank. The aerobic treatment tank is partitioned into several treatment tanks in the transverse direction by the partition wall, and each treatment tank is divided into several rooms in the vertical direction by a net-like body that prevents passage of the horizontally installed carrier horizontally in a single layer or multiple layers. At the same time as the floating microorganism-immobilizing carrier is filled, an air diffuser is installed at the bottom of each treatment tank, and a circulation device for circulating the water to be treated is installed in each treatment tank, and blood is transferred to a subsequent treatment tank on the partition wall. An expiration apparatus for organic sewage, characterized in that a member is provided to move the treated water. The organic means according to claim 6, wherein a conveying means for conveying a part of the water to be treated in the rearmost treatment tank of the aerobic treatment tank of the aerobic treatment apparatus of the organic wastewater to the treatment tank of the foremost portion is provided. Sewage Treatment Equipment. The aerobic treatment tank is partitioned into several treatment tanks in the horizontal direction by the partition wall, and inside each treatment tank is divided into several treatment chambers in the vertical direction by a net-like body that prevents the passage of the horizontally installed carrier in a single layer or multiple layers. Is filled with a floating microorganism immobilization carrier, and an air diffuser is installed at the bottom of each treatment tank, and a trickle portion of the water to be treated to a subsequent treatment tank is installed on the partition wall, and the treatment tank is treated at the rearmost treatment tank. An aerobic treatment apparatus for organic sewage, characterized in that a conveying means for conveying part of the water to the treatment tank of the foremost part is provided. ※ Note: It is to be disclosed based on the initial application.