JP2002086135A - Waste liquid treating device and its waste liquid treating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste liquid treating device having features that the device has concrete constitution for enhancing defoaming effect at the time of evaporation, is simple and generates no scorching or scale. SOLUTION: The waste liquid treating device is constituted of a standing coil for introducing low temperature steam which is arranged in a waste liquid in a waste liquid treating section, a steam section which is successively disposed above the waste liquid treating section, a blade means which is constituted by arranging blades respectively in the standing coil and above the waste liquid and a driving section for rotating the blade means. Further the device has constitution by which a whirling stream in a vertical direction is given to the waste liquid to promote evaporation of the waste liquid, foam generated on the waste liquid is broken via the blade above the waste liquid to suppress expansion of the foam, Whirling stream of the waste liquid is promoted via the lower blade and efficiency of liquid surface evaporation can be enhanced by utilizing forced stirring and heating. Further efficiency of liquid surface evaporation is enhanced and trouble due to leakage of the foam outside the device is avoided to attain certain evaporation and volume reduction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release agent waste liquid (used in an aluminum die casting process), a cleaning waste liquid (parts cleaning), a water-soluble cutting fluid (machine processing liquid), and a phenomenon waste liquid (used in an LCD manufacturing process). The present invention relates to an apparatus for treating waste liquid such as printing waste liquid (rotary printing press cleaning liquid) and the like, and a waste liquid treatment system for the same.

[0002]

2. Description of the Related Art There are various liquids to be evaporated and concentrated (reduced in volume) using a waste liquid treatment apparatus which is a main object of the present invention. ), Cleaning waste liquid (part cleaning), water-soluble cutting fluid (machine processing liquid), phenomenon waste liquid (used in LCD manufacturing process), printing waste liquid (rotary printing machine cleaning liquid), etc. (hereinafter referred to as waste liquid) A liquid containing a surfactant for obtaining hydrophilicity with water boils, starts to evaporate, and starts foaming mainly on the liquid surface. It is considered that the cause of the foaming phenomenon is mainly that the solvent other than the surfactant causes a phase change by evaporation, and the surfactant component covers the gas increased by the phase change, and appears as bubbles. . Although the form of this bubble is not uniform, when roughly distinguished, there are things that disappear immediately and those that continue to grow without disappearing.For example, in the case of the former, many things self-destruct even if they are left alone, In the latter case, it is very troublesome.

[0003] The solution to this bubble, that is, the defoaming method, is a method of increasing the flow rate of the generated foam, rapidly changing the flow path, and hitting a barrier or the like to defoam. A method in which the generated bubbles are brought into direct contact with the high-temperature heat transfer surface. Although a method of adding an appropriate amount of an antifoaming agent and chemically controlling the amount has been adopted, each has a drawback.

[0004] If the outer shell of the bubble has strength, the process is directly performed to the next step. It also entrains the droplets, leading to a deterioration of the evaporation component. Alternatively, it is necessary to expose the heat transfer surface in the evaporator to the air, and the foam that comes into contact therewith is broken, but scale is inevitably attached to the heat transfer surface. It is also necessary to increase the heat transfer area. In addition, the components of the evaporating agent deteriorate due to the components of the antifoaming agent. In addition, antifoaming agents are a family of surfactants and act on components that cause foaming, and have the function of reducing their ability. However, depending on the components of the antifoaming agent, the inside of the vapor part (evaporation space) Contains components that increase COD, oil content, and N-Hex value, and it is necessary to consider the post-process. In addition, the outflow of bubbles from the outlet of the steam section to the next step can be avoided.

[0005] As a waste liquid treatment apparatus, there is an advanced treatment system for colored waste liquid disclosed in Japanese Patent Application Laid-Open No. 3-213187.
(Reference 1). The present invention has a configuration in which a blade is installed in a fixed coil immersed in the waste liquid of a colored waste liquid tank, and the waste liquid in the colored waste liquid tank is stirred to achieve efficient heat exchange.

Another object of the present invention, that is, a water reuse system linked to a waste liquid treatment apparatus is produced by a waste liquid treatment apparatus and a waste liquid treatment apparatus disclosed in Japanese Patent Application Laid-Open No. 8-243543 proposed by the present applicant. There is a condensed water utilization device (Reference 2). The present invention divides a waste liquid treatment device into a waste liquid treatment section and a steam section,
A rotary coil for introducing low-temperature steam is provided in the waste liquid processing section, liquid level evaporation is performed by utilizing a film phenomenon caused by centrifugal force of the rotary coil, and evaporative condensed water (clear water) generated by the waste liquid processing apparatus is provided. ) Is proposed for use in Cooling towers or processing machines, with the aim of water reuse and effective use of energy or resource saving.

[0007] The present invention is an application utilizing the domestic priority of Japanese Patent Application No. 2000-208571.

[0008]

The waste liquid treatment apparatus disclosed in Document 1 is a stationary coil and a blade type volume reduction mechanism. Therefore, there is an effect that the rotating coil system and the efficient heat exchange of the waste liquid are achieved. However, even in the present invention, there is no specific configuration for achieving the above-described defoaming effect, and the above-mentioned problems 1 to 5 remain.

The waste liquid treatment apparatus disclosed in Document 2 is a rotary coil type volume reduction mechanism. Therefore, improvements have been pointed out, such as the complexity of the rotary coil bearing structure, the problem of scorching of the rotary coil or the occurrence of scale. Also in the present invention, the above-mentioned problems (1) to (4) remain because the defoaming effect is not sufficient.
And, in the water reuse system using the waste liquid treatment device,
There is a demand for further clarification of clarified water.

[0010]

According to the invention of claim 1, the blades are provided in a stationary coil for waste liquid and above the waste liquid, respectively.
The swirling flow of the waste liquid is promoted through one blade (for example, a lower blade) in the stationary coil, the efficiency of liquid surface evaporation is improved by using forced stirring and heating, and the other blade above the waste liquid is used.
(For example, through the upper blades) to improve the efficiency of liquid level evaporation and to avoid traps due to bubbles flowing out of the device to ensure reliable evaporation and volume reduction, or to eliminate traps in the device. , Etc. In addition, by promoting the swirling flow of the waste liquid through the lower blade, the concentration of the waste liquid is made uniform, a new film is always formed on the heat transfer surface of the stationary coil, the adhesion of scale is reduced, and the stationary coil It is intended to avoid burning of the heat transfer surface.

A first aspect of the present invention provides a waste liquid processing section for introducing low-temperature steam, a stationary coil provided in a state of being depressed in the waste liquid of the waste liquid processing section, a steam section connected above the waste liquid processing section, A waste liquid treatment apparatus comprising: a blade unit having a blade and a shaft provided in the stationary coil and above the waste liquid, and a driving unit that rotates the blade unit, wherein the waste liquid processing device includes: A vertical swirling flow is applied to the waste liquid to enable evaporation of the waste liquid through the swirling flow, and bubbles generated on the waste liquid via the upper blades are cut (cut). A waste liquid treatment apparatus characterized in that the expansion of the waste liquid can be suppressed.

[0012] The invention of claim 2 aims at further clarification of the clarified water to prevent generation and scattering of odors or bacteria in Cooling Tower, processing machines, etc., or to prevent odor or bacteria from being generated and scattered. It is intended to prevent the occurrence of the next pollution, to reuse the condensate, and to achieve the defoaming effect.

A waste liquid storage tank for storing liquid such as waste liquid and sewage from a processing machine such as a machine tool or a processing machine, a waste liquid processing unit for introducing low-temperature steam connected to the waste liquid storage tank, A stationary coil provided in a depressed state in the waste liquid of the waste liquid processing unit, a steam unit connected to the upper side of the waste liquid processing unit, and blades provided in the stationary coil and above the waste liquid, respectively. Means and a drive unit for rotating the blade means, and imparts a vertical swirl flow to the waste liquid through the lower blades in the waste liquid, thereby promoting the evaporation of the waste liquid through the vertical swirl flow. A waste liquid treatment apparatus capable of removing bubbles generated on the waste liquid through the upper blades and suppressing the expansion of the bubbles; a condenser connected to the waste liquid treatment apparatus; and a cooling tower connected to the condenser. And again A multi-stage filtration device composed of a microfiltration membrane and a reverse osmosis membrane connected to the concentrator to which the condensed liquid stored in the condenser is supplied, and the above-mentioned cooling tower, tank and other water reuse connected to the filtration device This is a waste liquid treatment system that uses a waste liquid treatment device composed of reuse means such as equipment.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a waste liquid treatment apparatus according to the present invention will be described. The waste liquid such as processing oil, cutting oil, and other waste liquid stored in a waste liquid storage tank is treated by a waste liquid treatment apparatus through a pipe. Will be introduced to the department. The waste liquid comes into contact with the stationary coil provided in the waste liquid processing unit and is evaporated, and the waste liquid is swirled in the vertical direction of the same chamber by the lower blades provided in the same chamber (forcibly). (Because of agitation), it is possible to achieve uniform liquid concentration, temperature distribution, contact with and detachment from the stationary coil, and the like. Therefore, for example, there are the following features. The liquid concentration is maintained at a substantially constant level, a new film is always formed on the heat transfer surface, the adhesion of scale is very small compared to the rotary coil method, and the scale cleaning pattern is substantially One-year cycle is sufficient, and scale removal is easy because there is no sticking on the heat transfer surface of the coil.
Evaporation operation at low temperature is possible, and the newly designed design that suppresses the mass speed of the safety wheel, mist separator, and evaporator has high clarity of the condensate, simplifies bearings, facilitates maintenance and management, Or reduction of metal wear, failure, and the like.

Further, as shown in FIG. 3, the waste liquid contains a surfactant for ensuring hydrophilicity with water. Therefore, when steam is injected into the heat transfer tube, the temperature of the liquid in the evaporator rises, the liquid surface boils, and when the evaporation starts, foaming starts. It is considered that this foaming phenomenon is mainly caused by the fact that a solvent (water) other than the surfactant causes a phase change by evaporation, and the surfactant component covers the gas increased by the phase change, and appears as bubbles. . Foam that disappears quickly is not a problem,
Some things continue to grow without disappearing. This growing foam is cut using the rotating lower blades, through which the growth of the foam is suppressed, the growth of the foam is eliminated, and the air in the foam is eliminated and fluidized back into the waste liquid. By removing the foam, the above-mentioned adverse effects are eliminated, and efficient evaporation and volume reduction are achieved. In addition, there is an advantage that adverse effects due to the use of an antifoaming agent can be avoided. Then, by the cutting of the foam, the foam collapses and becomes a so-called broken foam. The broken bubbles are in a state of being caught in the liquid by the swirling flow of the waste liquid by the lower blade, and have an advantage of further promoting the disappearance of the bubbles.

The water collected in the steam section of the waste liquid treatment apparatus is supplied to a cooling tower, a condenser, a pipe, control means, and the like.
Reused as water for processing machines. For example, the condensate of this Cooling @ Tower is clarified through a pipe, heat exchange and control means, such as microfiltration membrane (SS, bacteria removal), reverse osmosis membrane (salt removal), activation treatment (odor removal) or biological treatment. After being treated, it is reused as clarified water (substantially pure water) with excellent clarity as water for Coolink ゛ towers, processing machines, etc. via piping.

The waste liquid concentrate in the waste liquid treatment section is introduced into the concentrate tank via a pipe. It is also reused as fuel, industrial oil and the like.

[0018]

An embodiment of the present invention will be described below.

Reference numeral 1 denotes a waste liquid treatment device.
Is composed of a waste liquid treatment section 2 into which waste liquid is introduced from a waste liquid storage tank (described later), and a steam section 3 for storing steam (waste liquid evaporation mist) generated in the waste liquid treatment section 2. Waste liquid treatment section
2 is provided with a stationary coil 4 for introducing low-temperature steam, and a blade means 5 including a lower blade 50 (one or several) and an upper blade 51 (one or several). The lower blade 50 is provided with the stationary coil 4.
Is used in a state of being submerged in the waste liquid introduced into the waste liquid processing section 2, and the lower blade 50 is used to agitate the waste liquid in the waste liquid processing section 2 and impart a swirling flow to the waste liquid. And
The steam generated by the heat exchange with the stationary coil 4 is
Then, after specific gravity separation is performed, the air is exhausted to the outside of the waste liquid treatment apparatus 1. The upper blade 51 is provided slightly above the waste liquid level (liquid level A) (above the stationary coil 4), and cuts bubbles A1 generated on the liquid level A. In addition, the blade means 5
Is a shaft 52, a lower blade 50 and an upper blade provided on the shaft 52.
51 and a motor 6 (drive unit). The shaft 52 and the upper and lower blades 50, 51 are rotated by the motor 6.

In the figure, reference numeral 7 denotes a waste liquid introduction pipe of the waste liquid treatment apparatus 1;
Denotes a steam discharge pipe of the waste liquid treatment apparatus 1. In one example,
The steam section 3 forms a steam channel 32 using the partition plate 30 and the partition 31, and reaches the steam discharge pipe 8 via the steam channel 32. 33 shows a steam return pipe. This structure is used to adjust the atomization of steam, establish guidance, etc., and produce purified steam. In addition, we aim at prevention of discharge such as bubble or odor,
Prevent secondary pollution, avoid damage to equipment, etc.

Reference numeral 10 denotes a waste liquid treatment system using the waste liquid treatment apparatus 1. The waste liquid treatment system 10 includes a waste liquid storage tank 11 for storing various kinds of waste liquid, sewage, wastewater, and other fluids, and a waste liquid storage tank 11 for storing the waste liquid.
And a wastewater treatment apparatus 1 connected to the wastewater treatment apparatus 1 via a pipe 13 (and / or a wastewater treatment apparatus 1 connected to the wastewater treatment apparatus 1 via a pipe 13).
Or a heat exchanger), a cool link tower 16 connected to the condenser 14 via a pipe 15, and a condensate tank 140 of the condenser 14.
A filtration device 17, such as a microfiltration membrane 170, a reverse osmosis membrane 171, an activation treatment (not shown) or a biological treatment (not shown), and one or more such filtration devices; It is composed of a pipe 18 for connecting the cooling link 17 and the cooling tower 16.
When the condensate tank 140 of the condenser 14 is discarded, the filtration device 17 is omitted. Note that make-up water is supplied to the condenser 14 via a pipe 19.

Accordingly, the waste liquid, which is converted into mist in the waste liquid treatment apparatus 1, is concentrated or separated by the condenser 14 to become water, supplied to the cooling tower 16 and reused. The condensed liquid stored in the condensed liquid tank 140 is clarified by the filtration device 17 to become water (clarified water), and the clarified water is reused as, for example, water for the Coolinto tower 16.

In the drawing, reference numeral 20 denotes a steam generator, and the low-temperature steam generated by the steam generator 20 is supplied to the stationary coil 4 via a pipe 21. 22 is a concentrate tank, and this concentrate is
There is a way to reuse it as a working fluid and to reuse it as a heat source. Further, the steam section 3 and the waste liquid processing section 2 are communicated via a pipe 23, and the steam of the steam section 3 is returned to the waste liquid processing section 2, and is used for diluting the waste liquid or raising the temperature.

[0024]

According to the first aspect of the present invention, there is provided a waste liquid treating section for introducing low-temperature steam, a stationary coil provided in a state of being sunk in the waste liquid in the waste liquid treating section, and a steam section provided continuously above the waste liquid treating section. A waste liquid treatment device comprising blade means provided with blades in the stationary coil and above the waste liquid, respectively, and a driving unit for rotating the blade means, wherein the waste liquid is discharged through the lower blade in the waste liquid. A vertical swirling flow is provided to enable the evaporation of waste liquid to be promoted through the vertical swirling flow, and to remove bubbles generated on the waste liquid through the upper blades of the waste liquid, thereby suppressing the expansion of the bubbles. This is a waste liquid treatment device characterized by the following. Therefore, the claim
1 promotes the swirling flow of the waste liquid through the lower blades in the stationary coil provided in the waste liquid, and makes the liquid surface evaporation more efficient, Characteristics, such as the uniformity of the surface, or the constant formation of a new film on the heat transfer surface of the stationary coil, reducing the adhesion of scale and preventing the heat transfer surface of the static coil from sticking. is there.
In addition, the efficiency of liquid level evaporation is improved through the upper blades provided above the waste liquid, and the cut of the foam prevents the expansion of the foam and avoids the trap due to the outflow of the foam to the outside of the device, as well as the reliable evaporation and volume reduction. To be able to eliminate the traps in the equipment, to avoid the use of defoamers, to reduce costs and avoid pollution,
And so on.

According to the second aspect of the present invention, there is provided a waste liquid storage tank for storing liquid such as waste liquid and sewage, a waste liquid treatment section connected to the waste liquid storage tank for introducing low-temperature steam, and a state in which the waste liquid treatment section sinks into waste liquid. The stationary coil provided is composed of a steam section connected to the upper side of the waste liquid processing section, blade means provided with blades in the stationary coil and above the waste liquid, and a drive section for rotating the blade means. A vertical swirl flow is imparted to the waste liquid through the lower blades in the waste liquid, thereby facilitating the evaporation of the waste liquid through the vertical swirl flow, and bubbles generated on the waste liquid through the upper blade of the waste liquid. A waste liquid treatment device capable of suppressing the expansion of bubbles, a condenser connected to the waste liquid treatment device, a cool link tower connected to the condenser, and a precision connected to a condenser supplied with the condensed liquid stored in the condenser. Wastewater using a wastewater treatment device consisting of a multi-stage filtration device consisting of a filtration membrane and a reverse osmosis membrane, etc., and reusing means such as a Coolink ゛ tower, a tank, and other water recycling equipment connected to the filtration device It is a processing system. Therefore, claim 2 aims to further clarify the clarification water, to prevent the generation and scattering of odors or bacteria in the Cooling Tower, processing machines, and the like, and to prevent the occurrence of secondary pollution.
There are features such as the ability to reuse the condensate and the ability to achieve a defoaming effect.

[Brief description of the drawings]

FIG. 1 is an enlarged schematic cross-sectional view of a main part of a waste liquid treatment apparatus of the present invention.

FIG. 2 is an enlarged schematic cross-sectional view of an essential part showing flows of waste liquid, steam, and aggregates (oil) in the waste liquid treatment apparatus of the present invention.

FIG. 3 is an enlarged schematic cross-sectional view of a main part of the state of generation of bubbles in the waste liquid treatment apparatus of the present invention.

FIG. 4 is a schematic cross-sectional view further enlarging a state in which bubbles on a liquid surface according to the present invention are cut by a blade.

FIG. 5 is a further enlarged schematic cross-sectional view illustrating a periphery of a coil of the waste liquid treatment apparatus of the present invention.

FIG. 6 is a schematic diagram of a waste liquid treatment system using the waste liquid treatment device of the present invention.

[Explanation of symbols]

 1 Waste liquid treatment device 2 Waste liquid treatment section 3 Steam section 30 Partition plate 31 Partition wall 32 Steam flow path 33 Return pipe 4 Stationary coil 5 Blade means 50 Lower blade 51 Upper blade 52 Shaft 6 Motor 7 Waste liquid introduction pipe 8 Steam discharge pipe 10 Waste liquid Treatment system 11 Waste liquid storage tank 12 Piping 13 Piping 14 Condenser 140 Condensate tank 15 Piping 16 Coolink Tower 17 Filtration device 170 Microfiltration membrane 171 Reverse osmosis membrane 18 Piping 19 Piping 20 Steam generator 21 Piping 22 Concentrated liquid tank 23 Piping A Liquid level A1 foam

[Procedure amendment]

[Submission date] July 9, 2001 (2001.7.9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

A first aspect of the present invention provides a waste liquid treatment section for introducing a liquid ,
A stationary coil provided in a depressed state in the waste liquid of the waste liquid processing unit,
A steam unit connected to the upper side of the waste liquid processing unit, blade means provided with blades and shafts respectively provided in the stationary coil and above the waste liquid, and a drive unit for rotating the blade means. A waste liquid treatment apparatus, wherein a vertical swirling flow is applied to the waste liquid through the lower blade, the evaporation of the waste liquid can be promoted through the swirling flow, and the waste liquid can be accelerated through the upper blade. A waste liquid treatment apparatus characterized in that bubbles generated on a waste liquid are cut (cut) and expansion of the bubbles can be suppressed.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] Claim 2 is a processing machine such as a machine tool or a processing machine.
A waste liquid storage tank for storing liquid such as waste liquid and sewage from
Connected to waste liquid storage tankWaste liquid treatment unit for liquid introduction
And a stationary coil provided in a state of being depressed in the waste liquid of the waste liquid processing section.
A steam section connected above the waste liquid treatment section;
Do not install blades inside the stationary coil and above the waste liquid.
Blade means and a drive for rotating the blade means.
To the waste liquid through the lower blades in the waste liquid,
The swirl flow of the waste liquid is given through this vertical swirl flow.
Of the waste liquid through the upper blades.
The bubbles generated on the top are cut off and the expansion of these bubbles can be suppressed.
Waste liquid treatment device and a condenser connected to the waste liquid treatment device
And the Cooling Tower connected to this
Connected to the condenser to which the flocculated liquid stored in the condenser is supplied
Multi-stage system consisting of microfiltration membrane and reverse osmosis membrane
A filtration device, and the Coolink Petawa connected to the filtration device.
And tanks and other reuse means such as water reuse equipment.
This is a waste liquid treatment system using a waste liquid treatment device to be used.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Reference numeral 1 denotes a waste liquid treatment device.
Is composed of a waste liquid treatment section 2 into which waste liquid is introduced from a waste liquid storage tank (described later), and a steam section 3 for storing steam (waste liquid evaporation mist) generated in the waste liquid treatment section 2. Waste liquid treatment section
2 is provided with a stationary coil 4 for liquid introduction, and a blade means 5 provided with a lower blade 50 (one or several) and an upper blade 51 (one or several). The lower blade 50 uses the stationary coil 4 in a state where it is submerged in the waste liquid introduced into the waste liquid processing unit 2, and uses the lower blade 50 to agitate the waste liquid in the waste liquid processing unit 2 and convert the waste liquid into a waste liquid. Apply a swirling flow. Then, the steam generated by the heat exchange with the stationary coil 4 is separated into the specific gravity via the steam section 3 and then exhausted to the outside of the waste liquid treatment apparatus 1. In addition, the upper blade 51 is disposed at a waste liquid level (liquid level).
A) is provided slightly above (above the stationary coil 4),
The bubbles A1 generated on the liquid level A are cut. In addition, the blade means 5
A shaft 52, a lower blade 50 and an upper blade 51 provided on the shaft 52;
And a motor 6 (drive unit). The shaft 52 and the upper and lower blades 50, 51 are rotated by the motor 6.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[0024]

According to the first aspect of the present invention, there is provided a waste liquid treatment system for introducing a liquid.
Control unit , a stationary coil provided in a state of sinking in the waste liquid of the waste liquid processing unit, a steam unit connected to the upper side of the waste liquid processing unit, and blades provided in the stationary coil and above the waste liquid, respectively. And a drive unit for rotating the blade means, which applies a vertical swirling flow to the waste liquid through a lower blade in the waste liquid, and discharges the waste liquid through a vertical swirling flow. A waste liquid treatment apparatus characterized in that the evaporation of the waste liquid can be promoted, bubbles generated on the waste liquid through upper blades of the waste liquid are removed, and expansion of the bubbles can be suppressed. Therefore, the claim
1 promotes the swirling flow of the waste liquid through the lower blades in the stationary coil provided in the waste liquid, and makes the liquid surface evaporation more efficient, Characteristics, such as the uniformity of the surface, or the constant formation of a new film on the heat transfer surface of the stationary coil, reducing the adhesion of scale, and preventing the heat transfer surface of the stationary coil from sticking. is there.
In addition, the efficiency of liquid level evaporation is improved through the upper blades provided above the waste liquid, and the cut of the foam prevents the expansion of the foam and avoids the trap due to the outflow of the foam to the outside of the device, as well as the reliable evaporation and volume reduction. To be able to eliminate the traps in the equipment, to avoid the use of defoamers, to reduce costs and avoid pollution,
And so on.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0025

[Correction method] Change

[Correction contents]

[0025] The invention of claim 2 provides a waste liquid storage tank for storing liquid such as waste liquid and sewage, and a liquid guide connected to the waste liquid storage tank.
A waste liquid processing section for input, a stationary coil provided in a state of being depressed in the waste liquid of the waste liquid processing section, a steam section connected to the upper side of the waste liquid processing section, and blades in the stationary coil and above the waste liquid, respectively. The blade means provided includes a driving unit for rotating the blade means, and imparts a vertical swirling flow to the waste liquid through the lower blade in the waste liquid, thereby promoting the evaporation of the waste liquid through the vertical swirling flow. A waste liquid treatment apparatus capable of removing and generating bubbles on the waste liquid through the upper blades of the waste liquid and suppressing the expansion of the bubbles, a condenser connected to the waste liquid treatment apparatus, and a cooling tower connected to the condenser. In addition, a multi-stage filtration device composed of a microfiltration membrane and a reverse osmosis membrane connected to a condenser to which the condensed liquid stored in the condenser is supplied, a cooling tower, a tank and a tank connected to the filtration device. And recycling means, such as other water recycling equipment, in a wastewater treatment system utilizing constituted waste liquid treatment apparatus. Therefore, claim 2 aims to further clarify the clarification water, to prevent the generation and scattering of odors or bacteria in the Cooling Tower, processing machines, and the like, and to prevent the occurrence of secondary pollution.
There are features such as the ability to reuse the condensate and the ability to achieve a defoaming effect.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 61/02 500 B01D 61/02 500 61/14 500 61/14 500 61/58 61/58 C02F 1 / 44 C02F 1/44 K F term (reference) 4D006 GA03 GA07 KA01 KB18 PA01 PB02 PC01 4D011 BA02 4D034 AA11 AA20 BA03 CA12 4D076 AA04 AA22 BA02 BA45 BA50 CD12 CD26 DA08 FA04 FA18 FA19 FA31 HA05 HA06 HA12 JA01 JA03

Claims (2)

[Claims] 1. A waste liquid treatment section for introducing low-temperature steam, a stationary coil provided in a state of being depressed in the waste liquid of the waste liquid treatment section, a vapor section connected above the waste liquid treatment section, and the stationary coil And a drive unit for rotating the blade means, wherein the waste liquid is provided through the one blade, the blade being provided with a blade and a shaft provided inside and above the waste liquid, respectively. A swirl flow in the up and down direction, enabling the evaporation of the waste liquid to be promoted through the swirl flow, and removing bubbles generated on the waste liquid through the other blade to suppress the expansion of the bubbles. Waste liquid treatment device characterized by the following. 2. Waste liquid from a processing machine such as a machine tool or a processing machine,
A waste liquid storage tank for storing a liquid such as sewage, a waste liquid processing unit connected to the waste liquid storage tank for introducing low-temperature steam, a stationary coil provided in a state of sink in the waste liquid of the waste liquid processing unit, A steam section connected to the upper side of the section, blade means having blades provided in the stationary coil and above the waste liquid, and a drive section for rotating the blade means, wherein the blades in the waste liquid are provided. A vertical swirling flow of the waste liquid in the stationary coil is generated via the above-described stationary coil, the evaporation of the waste liquid can be promoted through the vertical swirling flow, and on the waste liquid via the blade above the waste liquid. A waste liquid treatment device capable of removing generated bubbles and suppressing the expansion of the bubbles, a condenser connected to the waste liquid treatment device, a cool link tower connected to the condenser, and a coagulated liquid stored in the condenser. A multi-stage filtration device composed of a microfiltration membrane and a reverse osmosis membrane etc. connected to the said condenser, and reuse means such as the above-mentioned Coolink tower, tank and other water reuse equipment connected to this filtration device. A waste liquid treatment system that uses the waste liquid treatment device configured.