KR100747172B1 - Device and method for treatment waste water - Google Patents

Abstract

A wastewater treatment apparatus and a wastewater treatment method for treating high concentration wastewater and low concentration wastewater at the same time are provided to efficiently treat the high concentration wastewater when high concentration wastewater is suddenly flown in the catchment tank by utilizing a first raw water treating tank as a microbial treating tank when a pollution level of wastewater supplied into a catchment tank is not less than a reference value. A wastewater treatment apparatus for treating high concentration wastewater and low concentration wastewater at the same time comprises a first opening-and-closing valve mounted on a supply water line, a seeding line connected between a microbial treating tank(18) and a first raw water treating tank(12), a second opening-and-closing valve mounted on the seeding line, a sensor part installed on a catchment tank to measure the contamination concentration of influent, and a control part for controlling opening and closing the first and second opening-and-closing valves. The wastewater treatment apparatus further comprises an air diffusion unit(28) installed on the bottom of the first raw water treating tank as well as the bottom of the microbial treating tank. The air diffusion unit includes a pipe(30) extending from an air supplying means, and trumpet-shaped air diffusers(32) rotatably mounted on the pipe by means of hinges with being spaced from one another in an equal distance. The air diffusers have a plurality of air ejection holes(34) formed on an upper surface thereof, and an air ejection nozzle(36) adhered to a side face thereof.

Description

Wastewater treatment system and method for the simultaneous treatment of high and low concentration wastewater {DEVICE AND METHOD FOR TREATMENT WASTE WATER}

1 is a process chart showing a wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater according to the present invention;

2a and 2b is a perspective view illustrating the structure of the diffuser and its operating state mounted on the microbial tank of the wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater according to the present invention,

3 is a process diagram illustrating an existing biological wastewater treatment system.

<Explanation of symbols for main parts of the drawings>

10: sump tank 12: primary treatment tank

14: water supply line 16: the first opening and closing valve

18: microorganism treatment tank 20: seeding line

22: second opening and closing valve 24: sensor

26 control unit 28 diffuser

30: piping 32: diffuser

34: air blowing hole 36: air blowing nozzle

The present invention relates to a wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater, the microorganism is returned from the microbial treatment tank to the primary treatment tank if the contamination level of the wastewater supplied to the sump tank is higher than the standard value and the primary treatment tank is microbial treatment The present invention relates to a wastewater treatment apparatus and method for simultaneous treatment of high and low concentration wastewater, which can be utilized as a tank and, if it is a normal value, can be used as an original primary treatment tank to efficiently respond to treatment when a high concentration of wastewater suddenly flows in.

Generally, sewage, plant waste, and food waste sediment, livestock manure, and other contaminated water are the main sources of pollutants in the stream, and these plant wastewater, domestic sewage, and contaminated water are purified from wastewater treatment facilities or sewage treatment plants. It is treated and discharged to the corresponding stream, and the wastewater treatment facility that treats factory wastewater and various polluted waters is an essential facility to be considered in consideration of prevention of pollution of rivers and groundwater and protection of river ecosystem.

Referring to Figure 3 attached to the existing biological wastewater treatment system as follows.

Existing biological wastewater treatment system is composed of collection tank → reaction, coagulation and neutralization chemical treatment tank → pressurization tank → primary treatment tank → microbial tank → sedimentation tank → sludge storage tank → concentration tank → sludge storage tank.

Existing biological treatment systems are sludge is transferred to the sludge storage tank through the chemical treatment, then dewatered by the dehydrator to be treated as waste, the sludge treated water is introduced into the primary treatment tank.

The primary treatment tank only serves to collect water so that the treated wastewater can be transferred to a microbial treatment tank.

In the microbial treatment tank, the first treated wastewater is treated by using microorganisms, and the treated wastewater is transferred to a settling tank and separated into liquids (microorganisms and treated water) by natural sedimentation, wherein the microorganisms are returned to the microbial treatment tank ( Depending on the state of the microbial treatment tank), and the excess sludge is transferred to the sludge storage tank to be treated as waste after dehydration treatment.

On the other hand, the treated water is separated and the microbial treatment is transferred to the second step of the treated water.

However, the existing biological wastewater treatment system is sensitive to the change in the concentration of the influent wastewater, and when the inflow of wastewater at a high concentration (above the designed concentration), the microorganisms of the microbial treatment tank are shocked and the wastewater treatment efficiency is drastically lowered, thereby causing the water quality. There is a problem that can cause legal problems by the environmental conservation law.

The present invention has been studied in view of the above problems, when the degree of pollution of the wastewater supplied to the sump tank is higher than the reference value, the microorganisms are returned from the microbial treatment tank to the primary treatment tank, the primary treatment tank is utilized as a microbial treatment tank, It is an object of the present invention to provide a wastewater treatment apparatus and method for the simultaneous treatment of high and low concentration wastewater, which can be efficiently used for treatment when a high concentration of wastewater suddenly flows, if it is normal.

One embodiment of the present invention for achieving the above object is a wastewater treatment method in which the wastewater is sequentially passed through a microbial treatment tank having a collection tank, a chemical treatment tank, a primary treatment tank and an acid generator, the wastewater introduced into the collection tank Measuring the concentration of; If the concentration of the waste water is greater than or equal to the reference value, seeding the microorganisms from the microbial treatment tank to the primary treatment tank, and utilizing the primary treatment tank as the microbial treatment tank; If the concentration of the waste water is less than the reference value, the simultaneous concentration of high and low concentration wastewater comprising the step of performing the original function of the primary treatment tank by blocking the microorganisms seeded from the microbial treatment tank to the primary treatment tank Provided is a wastewater treatment method for treatment.

Another embodiment of the present invention for achieving the above object is: a wastewater treatment apparatus in which a microbial treatment tank having a collection tank, a chemical treatment tank, a primary treatment tank, and an acid generator is sequentially disposed between the collection tank and the primary treatment tank. A first opening / closing valve mounted to the connected water supply line; A seeding line connected between the microbial treatment tank and the primary treatment water tank and a second opening / closing valve mounted to the seeding line; A sensor unit installed in the sump to measure the pollution concentration of the influent; It provides a wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater, characterized in that it comprises a control unit for controlling the opening and closing of the first and second opening and closing valves in accordance with the detection signal of the sensor unit.

In a preferred embodiment, the air diffuser mounted on the bottom surface of the microorganism treatment tank is further installed on the bottom surface of the primary treatment tank.

In a preferred embodiment, the air diffuser is composed of a pipe extending from the air supply means and a fallpipe tube-shaped diffuser that is rotatably hinged at equal intervals to the pipe, the upper surface of the diffuser a plurality of air blowing The hole is formed, characterized in that the air blowing nozzle is attached to the predetermined position on the side.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is to improve the existing treatment system to solve the microbial impact load according to the change in the concentration of the influent wastewater, which is a problem of the prior art, and to improve the microorganisms can be efficiently processed without being impacted, using a modified microbial treatment tank An active high / low concentration wastewater simultaneous treatment apparatus is provided.

The simultaneous high and low concentration wastewater treatment system according to the present invention operates in the same way as the existing system within the contaminant concentration level, and when the high concentration wastewater is introduced due to problems such as production process, the management system is changed and operated. There is this.

That is, the present invention is to provide a system for treating high concentration wastewater by changing the primary treatment tank to control the aeration tank inflow into a microbial treatment tank.

To this end, looking at the configuration of the wastewater treatment apparatus of the present invention in detail.

1 is a process chart showing a wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater according to the present invention.

As described above, the biological wastewater treatment apparatus includes a microbial treatment tank having a collection tank, a chemical treatment tank, a primary treatment tank, and an acid generator.

Here, the first opening and closing valve 16 is mounted on the water supply line 14 connected between the collection tank 10 and the primary treatment tank 12, and between the microbial treatment tank 18 and the primary treatment tank 12. Is connected to a seeding line 20 and a second opening / closing valve 22 is mounted on the seeding line 20.

That is, a second seeding line 20 which connects the seeding line 20 capable of seeding microorganisms from the microbial treatment tank 18 to the primary treatment water tank 12, and is automatically opened and closed on the seeding line 20. Install the shutoff valve (22).

In addition, the collection tank 10 is equipped with a sensor unit 24 capable of measuring the contamination concentration of the influent water, for example, a concentration sensor by measuring the conductivity, the concentration sensor by infrared rays, and the like is used.

The sensor unit 24 is connected to a control unit 26 for controlling the opening and closing of the first and second opening and closing valves (16, 22).

Accordingly, the concentration of the wastewater introduced into the sump tank 10 is measured by the sensor unit 24 and transmitted to the control unit 26. When the concentration of the wastewater is greater than or equal to the reference value, the second opening / closing is performed according to the signal of the control unit 26. The valve 22 is opened, and at the same time, microorganisms are seeded from the microbial treatment tank 18 to the primary treatment water tank 12, and the primary treatment water tank 12 is utilized as the microbial treatment tank 18. .

At this time, while the microorganisms are seeded from the microorganism treatment tank 18 to the primary treatment tank 12, the first opening / closing valve mounted on the water supply line 14 between the collection tank 10 and the primary treatment tank 12. Numeral 16 is in a closed state in response to a signal from the control unit 26.

On the other hand, the concentration of the wastewater introduced into the sump tank 10 is measured by the sensor unit 24 and transmitted to the control unit 26. When the concentration of the wastewater is less than the reference value, The two opening and closing valves 22 are closed to block the microorganisms seeded from the microbial treatment tank 18 to the primary treatment water tank 12. Accordingly, the primary treatment water tank 12 performs an original function. Done.

Here, the bottom surface of the microbial treatment tank 18 is equipped with an air dispersing device 28 for supplying air to grow microorganisms, the present invention is the primary treatment tank 12 when the high concentration of wastewater flows in ) Is used as the microbial treatment tank 18, so that the diffuser device 28 having the same structure is installed on the bottom surface of the primary treatment water tank 12.

2A and 2B are perspective views illustrating the structure of the diffuser and the operating state of the diffuser mounted in the microbial tank in the wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater according to the present invention.

The diffuser device 28 is a pipe 30 extending from the air supply means is disposed on the bottom surface of the microorganism treatment tank 18 and the primary treatment water tank 12, the equal intervals to the pipe (30) It is a structure in which the fallopian tube-shaped diffuser 32 is rotatably mounted, and a plurality of air blowing holes 34 are formed in the upper surface of the fallopian tube-shaped diffuser 32, and air is provided at a predetermined position on the side surface. A blowing nozzle 36 is attached.

Therefore, when the air is supplied from the air supply means (not shown) toward the pipe 30, air is ejected through the air ejection hole 34 formed in the upper surface of the diffuser 32, wherein the diffuser 32 Air is injected through the air ejection nozzles 36 formed on the side surfaces.

At this time, the diffuser 32 is rotated by the driving force of the force of the air injected through the air blowing nozzle 36, accordingly the air ejection direction is made up, down, left and right of the microorganism treatment line 18 and 1 Since air is easily supplied to the bottom and side corners of the primary treatment tank 12, it is possible to eliminate the occurrence of the dead zone of microorganisms, thereby preventing sludge (including microorganisms) corruption and improving wastewater treatment efficiency. have.

As such, when the degree of contamination of the wastewater flowing into the collecting tank 10 is higher than the reference value, the microorganism is automatically seeded in the microbial treatment tank 18 and the microorganism is introduced into the primary treatment tank 12 to be transformed into a microbial treatment tank, 10) if the concentration of the pollution introduced into the normal treatment tank 12 can control the impact load of the microorganism while repeating the process of performing the original role.

As described above, according to the wastewater treatment apparatus and method for the simultaneous treatment of high and low concentration wastewater according to the present invention microorganisms are returned from the microbial treatment tank to the primary treatment tank if the contamination level of the wastewater supplied to the collection tank is higher than the reference value The primary treatment tank is used as a microbial treatment tank, and if the normal value is used as the original primary treatment tank, there is an advantage that an efficient response for treatment when a high concentration of wastewater is suddenly introduced.

In addition, by adopting a rotary device, which is an air supply means for the microorganisms of the microorganism treatment tank and the primary treatment tank in a rotary manner, it is possible to improve the air contact efficiency with the microorganisms, in particular, air is easily supplied to the floor and side It is possible to eliminate the dead zone of the microorganisms, thereby improving the sludge (including microorganisms) corruption and wastewater treatment efficiency.

In addition, the present invention can improve the wastewater treatment capacity by increasing the capacity of the microbial treatment tank at a low cost while maintaining the existing biological treatment method, all the places to treat the wastewater to the biological treatment facility can be applied, as well as wastewater It can be applied to various places such as sewage treatment plant and sewage treatment plant.

Claims (4)

In the wastewater treatment method in which the wastewater passes through a collection tank, a chemical treatment tank, a primary treatment tank, and a microbial treatment tank having an acid generator, Measuring the concentration of wastewater introduced into the sump; If the concentration of the waste water is greater than or equal to the reference value, seeding the microorganisms from the microbial treatment tank to the primary treatment tank, and utilizing the primary treatment tank as the microbial treatment tank; If the concentration of the waste water is less than the reference value, blocking the microorganisms seeded from the microbial treatment tank to the primary treatment tank to perform the original function of the primary treatment tank; Wastewater treatment method for the simultaneous treatment of high and low concentration wastewater, characterized in that comprises a. In a wastewater treatment apparatus in which a microbial treatment tank having a collecting tank, a chemical treatment tank, a primary treatment tank, and an acid generator is sequentially arranged, A first opening / closing valve mounted to a water supply line connected between the water collecting tank and the primary treatment water tank; A seeding line connected between the microbial treatment tank and the primary treatment water tank and a second opening / closing valve mounted to the seeding line; A sensor unit installed in the sump to measure the pollution concentration of the influent; A control unit controlling opening and closing of the first and second opening / closing valves according to a detection signal of the sensor unit; Wastewater treatment apparatus for the simultaneous treatment of high and low concentration wastewater, characterized in that configured to include. The wastewater treatment apparatus for simultaneous treatment of high and low concentration wastewater according to claim 2, wherein an air diffuser mounted on the bottom surface of the microorganism treatment tank is further installed on the bottom surface of the primary treatment tank. The diffuser device comprises a pipe extending from an air supply means and a fallpipe-shaped diffuser that is rotatably mounted at a hinged interval at equal intervals, and a plurality of diffusers are provided on the upper surface of the diffuser. Air ejection hole is formed, the waste water treatment apparatus for the simultaneous treatment of high and low concentration wastewater, characterized in that the air blowing nozzle is attached to a predetermined position on the side.

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