KR200281738Y1 - Waste water disposal plant - Google Patents

Abstract

The present invention discloses a wastewater treatment apparatus.

The wastewater treatment apparatus includes: a first stirrer connected to a water collecting tank for storing wastewater and supplied with wastewater by a pump operation installed on a pipeline to be mixed with a reactant; A second stirrer connected to the first stirrer and a pipe to receive wastewater mixed with a reactant and mix with the coagulant; It is connected to the second stirrer and the inlet pipe is supplied with the waste water mixed with the flocculant is separated into the treated water and sludge by sedimentation, the upper and lower sides of the treated water discharge pipe and the sludge discharge pipe for discharging the sludge A sludge separation tank connected; The upper inner space of the sludge separation tank is divided into a plurality of vertically and both sides are welded to both inner sides of the sludge separation tank by welding, and at least two or more to suppress the flotation of the precipitated sludge by the slump due to the inflow and discharge of waste water A flow rate stabilizer plate provided; The sludge separation tank is bent and welded to form a space around the connection to the treatment water discharge pipe is formed in the "b" shape, the upper end is formed with a sawtooth float includes a float discharge blocking plate for suppressing the discharge of suspended matter. It is configured by.

Description

Waste water treatment plant {Waste water disposal plant}

The present invention relates to a wastewater treatment apparatus for purifying wastewater used for industrial purposes, and more particularly, to a wastewater treatment apparatus for efficiently separating sludge and wastewater, thereby improving wastewater purification rate.

In general, water pollution refers to a change in physicochemical properties of water so as to adversely affect living organisms, and is generally classified into a fixed water source and a non-fixed water source, and the fixed water source is a lake or a river at a certain place. These include factories, power plants, and sewage treatment plants that release pollutants through subsequent pipelines, and non-static water pollutants that emit various pollutants such as dust, sediments, pesticides, asbestos, fertilizers, heavy metals, salts, oil, and garbage. Arable land, parking lots, car washes, etc. Since various pollutants are emitted from such water pollutants, the Water Quality Preservation Act stipulates the quality of discharged water in treatment facilities that treat wastewater causing water pollution. Therefore, each treatment facility has an appropriate treatment process to remove contaminants from the influent to meet the appropriate standard of water quality, and biological, chemical and physical wastewater treatment methods are applied to this treatment process.

On the other hand, water pollution is caused by the discharge of pollutants from relatively small non-fixed water pollutants rather than a relatively large fixed water pollutant. Wastewater generated from such non-fixed water pollutants is more efficiently treated at the pollutant source than from collective treatment, so most of these small non-fixed water pollutants are installed with continuous wastewater treatment devices.

The conventional continuous wastewater treatment device is a water collecting tank for storing waste water, and a liquid or powdered coagulant precipitant using inorganic materials by receiving waste water from the water collecting tank, and reacting and agglomerating chemical substances contained in the waste water and some degradable substances. Reactors and flocculation tanks which precipitate to improve the turbidity of the wastewater and settling tanks that separate the wastewater and sediment are arranged in parallel.

However, the conventional continuous wastewater treatment apparatus as described above has a large and complicated configuration by providing a collection tank, a reaction tank, a flocculation tank, a sedimentation tank, and the like as a separate device, and as a result, of course, the installation space is restricted. It is not only easy to operate, but also has a disadvantage of expensive equipment. In addition, in the sedimentation tank which separates the wastewater and the sediment passed through the reaction tank and the flocculation tank, the sewage and sediment are separated and discharged separately. At this time, the residence time for sedimentation of the particulates is long, and oil components and bubbles floating in the water in the aggregated particulates Since the detergent component is added to the water, the precipitated particles float on the water again, or the oil component is eluted from the flocculated precipitated particles and floats on the water, thereby increasing the pollution of the treated water discharged from the top of the settling tank. have.

The present invention was devised to solve the above problems, and the object of the present invention is to simplify the structure of the wastewater treatment device and to increase the discharge efficiency of the treated water, thereby ensuring the reliability of the wastewater treatment and miniaturizing the device. To provide a wastewater treatment apparatus that can be.

1 is a process chart showing the wastewater treatment process of the wastewater treatment apparatus according to the present invention,

Figure 2 is a schematic view showing a wastewater treatment apparatus according to the present invention,

Figure 3 is a perspective view of the sludge separation tank in the wastewater treatment apparatus according to the present invention,

4 is a cross-sectional view showing the angle of the flow rate stabilizer plate in the sludge separation tank shown in FIG.

5 is a conceptual view showing that sludge and waste water are separated in the sludge separation tank shown in FIG.

Figure 6 is a perspective view showing another embodiment of the sludge separation tank in the wastewater treatment apparatus according to the present invention.

<Explanation of symbols for main parts of the drawings>

10: collection tank 15: PH detection controller 16: flow meter

20: first stirrer 25, 26, 35: storage container 25a, 26a, 35a: metering pump

30: second stirrer 40: sludge separation tank 40a: upper case

40b: lower case 41: inlet pipe 42a: treated water discharge pipe

42b: sludge discharge pipe 43: flow velocity stabilizer 44: float discharge block

50: sludge collection tank 60: filter p1, p2: pipe m: pump

Wastewater treatment apparatus according to the present invention for realizing the above object, the first stirrer connected to the water tank and the pipe for storing the wastewater and receiving the wastewater by the pump operation installed on the pipeline and mixed with the reactant; A second stirrer connected to the first stirrer and a pipe to receive wastewater mixed with a reactant and mix with the coagulant; It is connected to the second stirrer and the inlet pipe is supplied with the waste water mixed with the flocculant is separated into the treated water and sludge by sedimentation, the upper and lower sides of the treated water discharge pipe and the sludge discharge pipe for discharging the sludge A sludge separation tank connected; The upper inner space of the sludge separation tank is divided into a plurality of vertically and both sides are welded to both inner sides of the sludge separation tank by welding, and at least two or more to suppress the flotation of the precipitated sludge by the slump due to the inflow and discharge of waste water A flow rate stabilizer plate provided; The sludge separation tank is bent and welded to form a space around the connection to the treatment water discharge pipe is formed in the "b" shape, the upper end is formed with a sawtooth float includes a float discharge blocking plate for suppressing the discharge of suspended matter. It is characterized by that.

Hereinafter, with reference to the accompanying drawings illustrating a preferred embodiment of the wastewater treatment apparatus according to the present invention.

1 is a process chart showing a wastewater treatment process of the wastewater treatment apparatus according to the present invention, Figure 2 is a schematic view showing a wastewater treatment apparatus according to the present invention, Figure 3 is the sludge separation in the wastewater treatment apparatus according to the present invention It is a perspective view which shows a bath.

And, Figure 4 is a cross-sectional view showing the angle of the flow rate stabilizer plate in the sludge separation tank shown in Figure 3, Figure 5 is a conceptual diagram showing that the sludge and waste water is separated from the sludge separation tank shown in FIG.

As shown therein, the wastewater treatment apparatus according to the present invention includes a water collecting tank 10, first and second stirrers 20, 30, and a sludge separation tank 40, and a filter 60 and a sludge collection tank 50. It is composed.

The water collecting tank 10 is a storage container for storing wastewater discharged from a factory or a car wash, and is usually provided in a form buried underground. Such a sump tank 10 may be provided in various forms, and although not shown in the drawing, an adsorption member (such as a civil engineering material) for adsorbing oil contained in stored wastewater is provided, or a precipitate (sand or other impurities) is externally provided. An outlet can be formed that allows it to be removed. The collection tank 10 configured as described above discharges wastewater through a discharge pipe p1 provided at one side.

The first stirrer 20 is connected to the discharge pipe (p1) and the connection pipe (p2) of the collection tank 10 is configured to receive the waste water, and the supplied waste water is mixed with the reactant. At this time, in order to mix the wastewater and the reactant, the motor 21 which generates power by receiving power from the outside on one side of the upper part and the blade 22 connected to the output end of the motor 21 to form an integral rotation The blade 22 is located in the container of the first stirrer 20 as shown in the figure. When the motor 21 is rotated by such a configuration, the blade 22 is rotated at a high speed in conjunction with this, and the waste water in the vessel of the second stirrer 30 is stirred together with the flocculant.

On the other hand, the reactant introduced into the first stirrer 20 is used sodium hydroxide and aluminum sulfate, commonly referred to as sodium hydroxide and alumina sulfate, these sodium hydroxide and aluminum sulfate, respectively, storage containers 25, ( And stored in 26) and connected to the first stirrer 20 through a tube. At this time, each of the metering pump (25a, 26a) under the control of the PH detection controller 15 is installed on the tube, the respective storage container 25 by the operation of the metering pump (25a, 26a). Sodium hydroxide and aluminum sulfate stored in the 26, 26 is supplied into the vessel of the first stirrer 20. Here, the PH detection controller 15 detects the PH concentration of the wastewater flowing from the water collecting tank 10 and controls the metering pumps 25a and 26a so that an appropriate amount of chemical is introduced into the first stirrer 20. In addition, the first stirrer 20 is installed on the inlet pipe (p2) is introduced into the waste water.

The first stirrer 20 configured as described above receives wastewater from the sump tank 10 as described above, receives a reactant made of sodium hydroxide and aluminum sulfate, and then mixes and stirs the wastewater mixed with the reactants. Is discharged to the second stirrer (30).

The second stirrer 30 is connected to the pipe with the first stirrer 20 to receive the wastewater mixed with the reactant, and the wastewater mixed with the supplied reactant is stirred together with the coagulant. At this time, the second stirrer 30 is a motor 31 for generating a rotational force by receiving power from the outside to the upper side in order to mix the wastewater mixed with the reactant with the flocculant, like the first stirrer 20, The blade 32 is connected to the output end of the motor 31 and is integrally rotated. The blade 32 is located in the container of the second stirrer 30 as shown in the drawing. Therefore, when the motor 31 is rotated, the waste water in the vessel of the second stirrer 30 is stirred together with the flocculant by rotating the blade 32 at a high speed in association with the rotation of the motor 31.

On the other hand, the flocculant introduced into the second stirrer 30 is a medicine for collecting the solid particles suspended in the waste water to form a large agglomerate, which is also commonly referred to as sedimentation accelerator. These coagulants can be broadly divided into two chemical compositions. First, inorganic electrolytes include hydrated lime (calcium hydroxide), alum, aluminum chloride, iron (III), iron sulfate (II), and the like. Aggregation is caused by bringing the dislocation to nearly zero and eliminating the electric repulsive force between the particles that existed up to that time. The second is an organic polymer compound, which includes starch, polyacrylamide and derivatives thereof. Starch causes coagulation by sensitization of colloids. Polyacrylamide and its derivatives are molecules adsorbed on particles. The interlocking action attracts the particles from each other. In the present invention, the above two coagulants may be used together. Such a flocculant is stored in the storage container 35 and is connected to the second stirrer 30 through a tube, and on this tube, a metering pump 35a operated under the control of the PH detection controller 15 is installed. to be. Therefore, the second stirrer 30 configured as described above receives the coagulant by the operation of the metering pump 35a while receiving the waste water mixed with the reactants from the first stirrer 20 and agitates them. Mixed wastewater is discharged to the sludge separation tank 40.

The sludge separation tank 40 is divided into a large upper portion (40a) and the lower portion (40b), the upper portion (40a) is provided in a substantially empty box shape as shown in the figure, the lower portion (40b) is the upper portion ( Is connected to 40a) is provided in a form that the area is reduced while proceeding downward. The sludge separation tank 40 is connected to the second stirrer 30 and the inlet pipe 41 to receive the wastewater in which the flocculant is mixed, thereby separating the treated water w and the sludge s by precipitation. .

On the other hand, the sludge separation tank 40 is connected to the treated water discharge pipe (42a) for discharging the treated water (w) to the filter 60 to one side of the upper portion (40a), sludge sedimented to one side of the lower portion (40b) The sludge discharge pipe 42b for discharging (s) to the sludge collection tank 50 is connected. At this time, the inlet pipe 41 is provided in a direction facing the treated water discharge pipe (42a).

When the sludge separation tank 40 configured as described above receives the wastewater in which the flocculant is mixed through the inlet pipe 41, the solid particles are aggregated in the form of sludge (s) by the flocculant and settled to the lower portion 40b. , The treated water w is positioned at the upper portion 40a.

The sludge separation tank 40 configured as described above is composed of a flow rate flow stabilizer 43 and a float discharge blocking plate 44 having a characteristic element of the present invention, wherein the flow rate stabilizer plate ( 43) prevents the wastewater flowing into the sludge separation tank 40 and the sludge (s) and the treated water (w) generated by the sedimentation, while simultaneously mixing the wastewater inflow and sludge (s) and the treated water (w) It prevents the slump due to the discharge of the sludge (w) to act to suppress the floating. In addition, the suspended matter discharge blocking plate 44 serves to prevent the suspended matter such as foam is mixed with the treated water (w) discharged through the treated water discharge pipe 42a to be discharged.

In more detail, the flow velocity stabilizer 43 is provided in a plate shape, as shown in the drawing, and at least two or more in the form of partitioning a plurality of upper inner spaces of the sludge separation tank 40 in the vertical direction. Is prepared. That is, the flow rate flow stabilizer 43 in the present invention is proposed to be composed of three as shown in the drawings, the present invention is not limited to this, but the flow rate stabilizer plate according to the capacity, that is, the size of the sludge separation tank 40 The number of 43 may be added or subtracted.

The flow rate stabilizer 43 is provided to be inclined so that the upper end toward the inlet pipe 41 side, the lower end toward the opposite side, the inclination angle has a 10 ~ 60 ° relative to the vertical line as shown in FIG. When viewed from the horizontal line, it is formed within 30 ~ 160 °.

On the other hand, the flow velocity stabilizer 43 is fixed to both sides are welded to the inner surface of the upper portion (40a) of the sludge separation tank 40 in the vertical direction. In addition, the flow rate flow stabilizer plate at a position close to the inflow pipe 41 is provided at a lower height than other flow rate stabilizer plates, and in the present invention, the flow rate flow stabilizer plate is provided at a position close to the inflow pipe 41. It is proposed to have a height of approximately 10-30% lower based on the height of this other flow velocity stabilizer plate.

By such a configuration, backflow of the wastewater introduced through the inlet pipe 41 is prevented.

The flow velocity stabilizer 43 formed as described above separates the sludge (s) and the treated water (w) while preventing the wastewater mixed with the flocculant introduced through the inlet pipe 41 and the treated water separated from the sludge from being mixed with each other. It may be provided in a variety of forms if it has a feature to make it easy.

As an example, as shown in FIG. 6, the flow velocity stabilizer 43a may be provided in the form of bending a plate member several times.

On the other hand, the float discharge blocking plate 44 is formed by bending the plate-shaped member in the form of approximately "b", is provided in the form to cover the treated water discharge pipe (42a) as shown in the drawing, the flow rate described above It is provided to have the same inclination angle as the flow stabilizer 43.

That is, the float discharge blocking plate 44 is to form a separate space on one side of the sludge separation tank 40 to which the treated water discharge pipe 42a is connected, the upper end is provided with a structure in which the teeth are formed extending do. Such a float discharge blocking plate 44 is allowed to pass the sludge (s) and the treated water (w) separated from the sludge separation tank 40 to the groove formed between the teeth while suppressing the passage of floating matters such as bubbles. The turbidity of the treated water w discharged through the treated water discharge pipe 42a is maintained.

As described above, the treated water (w) separated from the sludge (s) in the sludge separation tank 40 passes through the filter 60 made of activated carbon, sand, and gravel through the treated water discharge pipe 42a, and finally, in the form of purified water. The sludge s separated from the treated water in the sludge separation tank 40 is discharged to the sludge collection tank 50 through the sludge discharge pipe 42b.

Meanwhile, reference numeral (c) denotes a case in which the first stirrer 20, the second stirrer 30, and the sludge separation tank 40 are integrally installed, including a pump, and is viewed by such a case (c). The wastewater treatment apparatus of the invention can be miniaturized in size. Reference numeral 16 denotes a flowmeter for checking the flow rate of the treated water discharged through the treated water discharge pipe 42a, and the flow rate 16 at this time is for checking the wastewater treatment capacity.

Referring to the wastewater treatment process of the wastewater treatment apparatus according to the present invention configured as described above are as follows.

First, referring to Figure 1, to receive the waste water containing contaminants from the water tank 10 for storing the waste water discharged from the car wash or other factories from the first stirrer 20 to stir it with the reactant do. In this case, sodium hydroxide and aluminum sulfate are used as the reactants, and decomposable substances are decomposed by these chemicals to improve turbidity of the wastewater.

Subsequently, the wastewater mixed with the reactant in the first stirrer 20 is discharged to the second stirrer 30 through a pipe line, and in this case, a flocculant is added to the supplied wastewater in the second stirrer 30. Differential stirring is performed. At this time, the flocculant reacts with the wastewater to aggregate some solid particles into solids, that is, sludge.

As such, the wastewater in which the flocculant is mixed in the second stirrer 30 is discharged to the sludge separation tank 40 through a pipe line.

On the other hand, the wastewater mixed with the flocculant supplied to the sludge separation tank 30, the sludge solidified by the flocculation and sedimentation is submerged by its own weight, while the treated water from which the solid particles are removed is placed on the top of the sludge To be located. As such, the sludge s and the treated water w separated up and down in the sludge separation tank 40 are sludge collection tank 50 and the filter 60 through the respective discharge pipes 42a and 42b. The wastewater treatment process is completed.

In addition, the sludge separation tank 40 has a flow rate stabilizer 43 and a float discharge block 44, which are characteristic elements of the present invention, are installed in the inflow of wastewater mixed with the flocculant and in the treatment water and sludge discharge. By stably preventing the slack caused by it, it is possible to suppress the discharge of the suspended matter with the treated water while maintaining the turbidity of the treated water.

The wastewater treatment apparatus configured and operated as described above includes a first and second stirrers that receive wastewater from a collection tank to perform chemical reactions and flocculation in a single case, and a sludge separation tank to receive and settle the wastewater and sludge. As a result, the device can be made compact, and consequently, it can be installed in a narrow place, and the maintenance of the device is much simpler than before. In addition, the sludge separation tank has a structure in which a flow velocity stabilizer plate and a float discharge blocking plate are installed so that wastewater and sludge which are rapidly introduced through the first and second stirrers are separated and discharged within a short time, thereby greatly reducing the wastewater treatment time. It provides the effect.

Claims (3)

A first stirrer connected to a collecting tank for storing wastewater and receiving the wastewater by a pump operation installed on the pipeline and mixing the wastewater with a reactant; A second stirrer connected to the first stirrer and a pipe to receive wastewater mixed with a reactant and mix with the coagulant; It is connected to the second stirrer and the inlet pipe is supplied with the waste water mixed with the flocculant is separated into the treated water and sludge by sedimentation, the upper and lower sides of the treated water discharge pipe and the sludge discharge pipe for discharging the sludge A sludge separation tank connected; The upper inner space of the sludge separation tank is divided into a plurality of vertically and both sides are welded to both inner sides of the sludge separation tank by welding, and at least two or more to suppress the flotation of the precipitated sludge by the slump due to the inflow and discharge of waste water A flow rate stabilizer plate provided; A float discharge blocking plate that is bent and welded to form a "b" shape so that a space is formed around the sludge separation tank to which a treatment water discharge pipe is connected, and a top portion is formed with a sawtooth to pass through the treatment water; Wastewater treatment apparatus comprising a. The flow velocity stabilizer of claim 1, wherein the flow velocity stabilizer has an inclination angle of 30 to 160 °, and the flow velocity stabilizer disposed at a position close to the inflow pipe has a height of 10 to 30% lower than that of other flow velocity stabilizers. Wastewater treatment equipment. The wastewater treatment apparatus according to claim 1, wherein the first stirrer, the second stirrer, and the sludge separation tank are installed in a box-shaped case.