JPH06238265A - Polluted water treatment apparatus - Google Patents

Abstract

PURPOSE:To provide polluted water treatment apparatus which can separate polluted water into solid matters and a liquid and treat harmful substances and malodorous substances. CONSTITUTION:Polluted water supplied through a polluted water supplying pipe 30 is sprayed through a polluted water spraying nozzle 14 to a dehydration tank 12 which is rotating at a high speed. The sprayed polluted water is sprinkled to a first filter 40 of the dehydration tank 12 and the liquid goes in a space part 44 and there after the liquid is brought into contact with activated carbon 62, etc., to be decolored and deodorized, it is scattered outside through a second filter 42 and taken out through a drain taking outlet 56. Meanwhile, the solid matters adhering to the first filter 40 and from which water is removed drop the first filter 40 by lowering the rotation speed of the dehydration tank 12 and they are accumulated on the bottom part of a box 18. The solid matters are taken out through a solid matter taking outlet 22. Consequently, the polluted water treatment apparatus 10 can separate the solid matters from the liquid simultaneously with deodorization treatment, etc., for the liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment apparatus which separates sewage containing sludge and the like into a solid substance from which water has been removed and a purified liquid, and takes out the separated substances.

[0002]

2. Description of the Related Art Conventionally, a treatment for separating sewage into a solid substance from which water has been removed and a liquid has been extensively performed for the purpose of pollution control or efficiency of post-treatment. In this case, treatments such as precipitation and filtration are common.

[0003]

However, the precipitation,
Processing such as filtration takes time, which is not desirable from the viewpoint of efficient processing. In addition, even after separating into a solid and a liquid, the liquid may contain harmful substances, or the liquid may generate an odor, so it cannot be discharged directly to a river or reused. However, the liquid had to be further subjected to treatments such as removal of harmful substances, decolorization and deodorization.

The present invention has been made in order to solve this kind of problem, and is capable of separating sewage into a solid matter and a liquid and at the same time treating toxic substances, odorous substances and the like contained in the liquid. An object is to provide a processing device.

[0005]

In order to achieve the above-mentioned object, the present invention is a device for separating and extracting sewage into a liquid and a solid, which has a first cylindrical filter inside.
A dehydrating tank having a second filter on the outside and a space for filling an adsorbent between the first filter and the second filter, the rotatable dehydrating tank having a lower open portion;
A sewage spray nozzle for spraying sewage onto the first filter of the dehydration tank, and a rotation drive source for rotating the dehydration tank,
It is characterized by including.

Further, the apparatus of the present invention is characterized by including a cleaning nozzle for spraying a cleaning liquid from the outside onto the dehydration tank.

Further, the apparatus of the present invention is characterized in that the space portion of the dehydration tank is filled with activated carbon as an adsorbent.

[0008]

In the sewage treatment apparatus according to the present invention, sewage is sprayed from the sewage spray nozzle onto the first filter of the dehydration tank that rotates at high speed. Under the action of centrifugal force, only the liquid of the dirty water passes through the first filter and enters the inside of the dehydration tank, and the solid matter from which the water is removed adheres to the surface of the first filter.
At this time, since the sewage is sprayed on the rotating first filter surface, the sewage that has become fine particles is uniformly ejected to the first filter, so that the liquid and the solid matter are separated from each other. Done at high speed. The liquid that has entered the dehydration tank comes into contact with the adsorbent disposed in the space according to the purpose, is subjected to treatment such as removal of harmful substances, deodorization, and decolorization, and is discharged to the outside through the second filter. It On the other hand, the solid matter attached to the first filter is reduced in centrifugal force by lowering the rotation speed of the dehydration tank, and is dropped to the lower part, and can be taken out. Further, when the filter is clogged, it is clogged by once stopping the supply of dirty water and injecting the cleaning liquid from the cleaning nozzle with the dehydration tank rotating at a low speed. Remove any material that may be present from the filter.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The sewage treatment apparatus according to the present invention will be described in detail below with reference to the accompanying drawings with reference to preferred embodiments.

A sewage treatment apparatus 10 according to this embodiment is shown in FIG.
Further, as shown in FIG. 2, it basically comprises a dehydration tank 12, a wastewater spray nozzle 14 for spraying wastewater onto the dehydration tank 12, and a motor 16 for driving the dehydration tank 12.

The sewage treatment apparatus 10 has a cylindrical box body 1.
8 is disposed inside. A solid material outlet 22 is defined in the lower portion of the side surface of the box body 18.

A support base 24 is installed on the bottom of the box body 18, and a bearing 26 is installed on the top of the support base 24 to rotatably support a pipe body 28 supporting the dehydration tank 12. The dehydration tank 12 is attached to the upper portion of the pipe body 28. Inside the pipe body 28, a hollow wastewater supply pipe 30 is provided.
Penetrates to the top of the box 18. The dehydration tank 1
At the upper part of 2, a pipe body 32 that penetrates the sewage supply pipe 30 inward is mounted in the same manner as the lower part, and the pipe body 32 is a box body 18.
Is rotatably supported by a bearing 34 installed on the upper surface of the bearing 34 and is integrally formed with a pulley 36 provided on the upper portion of the bearing 34. The pulley 36 is the belt 3
8 is connected to the motor 16 provided on the upper side of the outer side surface of the box body 18.

As shown in FIG. 2, the dehydration tub 12 has a metal first filter 4 having different outer and inner radii.
0, the second filter 42 is a cylindrical body, and the inner first filter 40 has a large number of pores with a diameter of several microns to several tens of microns, and the outer second filter 4
2 has a large number of holes with a diameter of 100 microns or more. A space 44 is defined between the first filter 40 and the second filter 42. The upper part of the dehydration tank 12 is composed of an openable / closable lid 46, and the lower part completely closes only the space 44, and the central part has a cross-shaped plate 48 (see FIG. 2). ) With tube 2
8 is connected.

The sewage supply pipe 30 is provided with a sealing member 50 in the lower part of the dehydration tank 12, and sewage does not leak to the lower part. The sewage supply pipe 30 is
Eight filthy water spirally penetrates through the central portion of the dehydration tank 12 and extends in the so-called axial direction while being displaced by 90 ° with respect to the first filter 40 above the sealing member 50. The spray nozzle 14 is formed (see FIG. 2). The nozzle 14 is configured to vigorously spray the liquid from the tip. Further, a conical solid derivative 52 is provided from the position of the sealing member 50 toward the plate body 48 at the bottom of the dehydration tank 12. This is the first filter 40
This is to prevent the solid matter falling off from adhering to the pipe body 28, the bearing 26, etc., and impairing its function, and to ensure that the solid matter can be taken out from the solid matter outlet 22.

An inclined body 54 is provided on the lower side surface of the box 18 from the lower portion of the space 44 of the dehydration tub 12 so as to orbit downward, and the inclined body 54 forms the box 18.
The drain outlet 56 is provided at a plurality of positions at the position where it abuts the lower side surface of the. Further, a tubular body 58 is provided in the longitudinal direction on the inner side surface of the box body 18, and a plurality of cleaning nozzles 60 are installed from the tubular body 58 toward the second filter 42 and along the axis. ing. The tubular body 5
Reference numeral 8 is connected to a pressurized water supply source (not shown).

The sewage treatment apparatus 10 thus constructed
Separates solids and liquids by acting as follows.

First, a necessary adsorbent or the like is provided in the dehydration tank 12 according to the type of wastewater to be treated. In this embodiment, activated carbon 62 is used as the adsorbent. That is, the lid 46 is opened and the space 44 is filled with the activated carbon 62.

By driving the motor 16 in this state, the rotational force is applied to the tubular body 2 via the belt 38 and the pulley 36.
The activated carbon 62, which is transmitted to the batteries 8 and 32 and is filled in the dehydration tank 12, that is, the first and second filters 40 and 42 and the space 44, rotates.

Therefore, high pressure sewage is supplied to the sewage supply pipe 30 from a sewage supply source (not shown). As a result, sewage is supplied from the sewage supply pipe 30 to the sewage spray nozzle 14, and the first filter 4 that rotates at a high speed from the sewage spray nozzle 14 is supplied.
0 is sprayed with dirty water. Sewage becomes fine particles and is evenly dispersed on the first filter 40. Since the first filter 40 has pores of several microns to several tens of microns, only liquid in the sewage scattered on the surface of the first filter 40 enters the space 44 due to centrifugal force to remove water. The solid matter adheres to the surface. The liquid that has entered the space 44 is decolorized, deodorized, and the like by coming into contact with the activated carbon 62, and is quickly scattered to the outside through the holes of the second filter 42. The scattered liquid reaches the inclined body 54 through the inner peripheral surface of the box body 18 or directly, and the inclined body 54
Is guided to the storage tank or the like (not shown) from the drain outlet 56.

On the other hand, in order to take out the solid matter adhering to the first filter 40, the driving force of the motor 16 is reduced and the rotation speed of the dehydration tub 12 is reduced. That is, the centrifugal force acting on the solid matter is reduced, and the first filter 4
Remove solids from 0. The solid matter drops to the bottom of the box body 18 without coming into contact with the tube body 28, the bearing 26, etc. by the solid matter derivative 52. Therefore, the box 18
The solid matter can be easily taken out from the solid matter take-out port 22.

When the first filter 40 is clogged, the supply of sewage is temporarily stopped and the dehydration tank 12
Of the high-pressure water or the like from the cleaning nozzle 60 by lowering the rotation speed of the water, the water reaches the first filter 40 via the second filter 42 and the activated carbon 62, and the eyes of the first filter 40 The clogging can be cleared.

Thus, the sewage treatment apparatus 1 according to this embodiment
In 0, the space 44 is provided in the dehydration tank 12 and the activated carbon 62 is filled therein, so that the liquid separated from the sewage by the first filter 40 comes into contact with the activated carbon 62 and the like, and decolorization, deodorization and the like can be performed. . That is, the liquid can be decolorized and deodorized at the same time as the solid and liquid are separated. Of course, it is possible to perform other processing by exchanging the adsorbent filled in the space 44.

Further, since the dewatering tank 12 is rotated at a high speed and sewage is sprayed from the sewage spray nozzle 14 to the dewatering tank 12, fine particles are formed on the first filter 40 having a large number of pores of several microns to tens of microns. The sewage that has become dirty contacts uniformly, and the separation process is performed at high speed to improve the dehydration efficiency.

Further, the solid matter adhered to the first filter 40 is reduced by reducing the rotation speed of the dehydration tank 12.
Since it automatically falls and accumulates on the lower part of the box body 18, it can be easily taken out from the solid matter take-out port 22. Therefore, it is not necessary to stop the sewage treatment apparatus 10 for taking out the solid matter.

Furthermore, the first and second filters 40, 4
Even if the second clogging occurs, the clogging can be easily performed by temporarily stopping the supply of the dirty water, reducing the rotation speed of the dehydration tank 12, and jetting the cleaning water from the cleaning nozzle 60. Can be removed. Therefore, it is not necessary to stop the device and replace the filter or clean the filter each time it is clogged.

Furthermore, the hole of the second filter 42 is set to 1
The liquid can be quickly scattered to the outside of the dehydration tub 12 by defining it to have a size of 00 microns or more and setting it to be larger than the hole of the first filter 40.

[0027]

According to the sewage treatment apparatus of the present invention, the following effects can be obtained.

That is, since a space is provided inside the dehydration tank so that an adsorbent or the like can be filled therein, wastewater is separated into a solid matter and a liquid, and at the same time, harmful substances are removed from the liquid, Can be used for decolorization and deodorization. Further, by changing the type of the adsorbent, the content of the processing can be changed according to the application.

Further, the sewage water is sprayed from the sewage water spray nozzle onto the first filter of the dehydrating tank which rotates at a high speed. Therefore, since the sewage is uniformly sprayed on the first filter, and the sewage is sprayed on the first filter in the form of fine mist particles, the liquid and the solid matter can be separated at high speed. Done.

Further, the solid matter from which water has been removed adheres to the surface of the first filter by the centrifugal force, but the centrifugal force is reduced by lowering the rotation speed of the dehydration tank, and the solid matter is automatically removed to the lower part. It can be removed and taken out. That is, the solid matter can be taken out even during the separation treatment.

Further, when the filter is clogged, the supply of dirty water is once stopped, and the cleaning liquid is sprayed from the cleaning nozzle while the dehydration tank is rotated at a low speed. Since the clogged substance can be removed from the filter, it is not necessary to replace the filter.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional explanatory view of a sewage treatment apparatus according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Sewage treatment apparatus 12 ... Dehydration tank 14 ... Sewage spray nozzle 16 ... Motor 40 ... 1st filter 42 ... 2nd filter 44 ... Space part 60 ... Cleaning nozzle

Claims (3)

[Claims] 1. A device for separating and extracting sewage into a liquid and a solid, the first filter having a cylindrical first filter and the second filter having an outer filter, and the first filter and the second filter. Is a cylindrical body in which a space for filling the adsorbent is formed, and a rotatable dehydration tank whose lower part is open; and a wastewater spray nozzle for spraying dirty water to the first filter of the dehydration tank. And a rotary drive source for rotating the dehydration tank, the wastewater treatment device. 2. The sewage treatment apparatus according to claim 1, further comprising a cleaning nozzle for spraying a cleaning liquid from the outside onto the dehydration tank. 3. The sewage treatment apparatus according to claim 1, wherein the space portion is filled with activated carbon as an adsorbent.