KR100357992B1 - Equipment for the treatment of waste liquid - Google Patents

Abstract

The present invention relates to a wastewater treatment apparatus for treating wastewater containing waste printing ink generated at a printing plant or wastewater containing oil such as lubricating oil generated at a general plant.

The wastewater treatment apparatus of the present invention supplies a wastewater supply unit including a spray nozzle for spraying wastewater into the combustion chamber with fine particles, a burner burning at a temperature higher than a predetermined temperature to enable combustion of oil, etc. introduced into the combustion chamber, and high pressure air to the burner. A high pressure fan, an inlet for entering and exiting ash, and a partition for extending combustion time by dividing the combustion chamber, and a dust collector for collecting dust contained in the gas discharged after combustion.

In the practice of the present invention, the wastewater is treated in the combustion chamber to quickly evaporate the water and completely incinerate the sludge, thereby completely eliminating the environmental pollution caused by the plant wastewater. In addition, the fuel consumption of the burner is reduced, and the waste water treatment amount per unit time is increased due to the provision of two or more combustion chambers.

Description

Wastewater Treatment System {Equipment for the treatment of waste liquid}

The present invention relates to a wastewater treatment apparatus, and more particularly, by spraying wastewater containing waste printing ink generated in a printing plant or wastewater containing oil such as lubricating oil generated in a general plant and then treating it by combustion. It relates to a wastewater treatment apparatus.

In general, since a printing factory prints various printed matters using aqueous or oil ink, waste water containing waste ink is generated, and oil such as lubricating oil is introduced into the waste water according to operation of the printing machine. Wastewater containing such waste oil has been generated in a general machine shop.

Conventionally, in order to prevent environmental pollution caused by such factory wastewater, waste ink or oil contained in the wastewater is filtered or purified by using a filter or sedimentation method using sewage treatment or chemicals.

However, the method of using the filter should be discarded as it is, the waste ink particles or oil particles, etc. If the filter is discarded as it is, if the water is added, the ink particles or oil particles remaining in the filter may be eluted, causing contamination again. There was a problem that the reprocessing, such as incineration. In addition, the precipitation method using chemicals not only causes cost burden due to expensive drug administration and reprocessing of sediment produced by chemical treatment, but the discharged water after chemical treatment exceeds the legal biological oxygen demand (BOD) standard. There are a lot of cases, if discharged as it was a problem of being a source of pollution of the river. Conventionally, the factory wastewater is frequently discharged as it is, and as a result, the wastewater enters general sewage and rivers, and contaminates soil and water, thereby destroying the natural environment.

When wastewater flows into a combustion chamber equipped with an inlet for combustible waste, an outlet for combusted ash, and an outlet for combustion air disclosed in Korean Laid-Open Patent Publication No. 98-1841, water is evaporated and the sludge contained is burned. And a discharger for supplying the wastewater to be treated to the processor side, a jetter for discharging the wastewater supplied by the feeder into the combustion chamber through a nozzle, and the discharge gas discharged in connection with the discharge port of the processor. There is a waste water treatment apparatus characterized by having a dust collector for collecting dust and the like, but this is a vertical combustion chamber, using one burner, and had to be incinerated within a short combustion time, thereby limiting the amount of waste water treatment.

Accordingly, the present invention has been made to solve the problems of the prior art, the object of the present invention is to provide a more efficient wastewater treatment apparatus by ensuring a sufficient combustion time in the combustion chamber and operating the auxiliary burner according to the combustion state have.

Another object of the present invention is to provide a wastewater treatment apparatus further comprising a facility for efficient cooling of exhaust gas.

Still another object of the present invention is to provide a wastewater treatment apparatus further comprising a facility capable of efficiently saving fuel and utilizing waste materials.

The above object of the present invention is divided into three or more stages by two or more partitions (43, 44) is formed so that the sprayed waste water flows in the S-shape, and the primary burner (20) on one side wall at the bottom of the combustion chamber And a first high pressure fan 21 for supplying high pressure air to the primary burner, and an air fan 47 for supplying oxygen in the combustion chamber is installed at the bottom, and the wastewater flows from the lower end in the middle stage. The combustion chamber 40 provided with the secondary burner 30 and the second high pressure fan 31 for supplying the high pressure air to the secondary burner on the side wall of the dust collector, and the dust collecting dust collected in the gas discharged through the combustion chamber. In the wastewater treatment apparatus including the apparatus 50, the lower end of the combustion chamber further comprises a spray nozzle 14 for spraying the wastewater installed at the bottom near the burner into the combustion chamber, and one side wall of the combustion chamber. on An inlet 41 for injecting combustible waste and drawing out ash is formed, and the combustion chamber and the dust collector are connected through a U-shaped combustion chamber outlet pipe 48, and inside the combustion chamber outlet pipe is provided with a dust collector. This was achieved by providing a wastewater treatment apparatus provided with a watering device 485 for cooling the exhaust gas on the near side.

According to another object of the present invention, a cooling tube 481 for cooling exhaust gas is installed inside the U-shaped combustion chamber outlet pipe 48, and cooling water is supplied to the outside of the U-shaped combustion chamber outlet pipe. It was achieved by providing a waste water treatment apparatus provided with a water pump 482 and a water tank 483 for storing the cooling water circulated in the cooling pipe.

Another object of the present invention has been achieved by providing a wastewater treatment apparatus having a pulverization input device for injecting a pulverized product of waste fuel connected to the inlet of the combustion chamber into the combustion chamber.

Hereinafter, the specific configuration and operation of the present invention will be described in detail with reference to the accompanying drawings, but the embodiments described in the present specification are only basic examples thereof, even if the shape and structure of the present invention are changed. 1 is a schematic process diagram of a wastewater treatment apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a U-shaped combustion chamber outlet pipe portion of the wastewater treatment apparatus according to another embodiment of the present invention. 3 is a cross-sectional view of a part of a crushed matter input device of a wastewater treatment apparatus according to another embodiment of the present invention.

1 is a schematic process diagram of a wastewater treatment apparatus according to an embodiment of the present invention,

Figure 2 is a cross-sectional view of the U-shaped combustion chamber outlet pipe portion of the wastewater treatment apparatus according to another embodiment of the present invention,

3 is a cross-sectional view of a part of the crushed matter input device of the wastewater treatment apparatus according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

10: wastewater supply unit 11: wastewater storage tank

12: metering feeder 13: high pressure pump

14: spray nozzle 20: primary burner

21: first high pressure fan 30: secondary burner

31: second high pressure fan 40: combustion chamber

41: inlet 43: first partition

44: second partition 45: combustion chamber exit

46: refractory 47: air fan

48: combustion chamber outlet pipe 481: cooling tube

482: water pump 483: water tank

484: check hole 485: watering device

486: water outlet 50: dust collector

51: dust collector inlet 52: outlet pipe

53: sealing valve 54: dust collector

55: suction fan 56: dust collector body

60: crushed product input device 61: blower

62: grinder 63: hopper

64: valve 65: grinding inlet

66: grinding input tube

Hereinafter, the wastewater treatment apparatus of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a wastewater treatment apparatus according to an embodiment of the present invention includes a wastewater supply unit 10 including a spray nozzle for spraying wastewater in the form of fine particles into a combustion chamber, and combustion of oil or the like introduced into the combustion chamber. Two burners burning above a certain temperature, high-pressure fan for supplying high-pressure air to each burner, an inlet for taking in and out of the ash, and the inside of the combustion chamber, the spray waste water into an S-shape It is composed of a partition for increasing the combustion time to induce the complete combustion of contaminants such as oil while inducing to flow, and a dust collector for collecting dust contained in the gas discharged after combustion.

The wastewater supply unit 10 is a wastewater storage tank 11 for storing wastewater, and a fixed quantity feeder 12 such as a valve positioned at a lower portion of the wastewater storage tank 11 to quantitatively control the amount of wastewater supplied to the combustion chamber 40. And, the high-pressure pump 13 for pumping the wastewater supplied from the metered feeder 12, and the spray nozzle 14 to spray the wastewater flowing out of the wastewater storage tank and supplied through the metered feeder to facilitate combustion It is composed.

The combustion chamber is composed of refractory materials for heat insulation and heat resistance, and is divided into three stages by two partitions. A primary burner and a first high pressure fan are installed in the lower combustion chamber, and an air fan for replenishing oxygen sources in the combustion chamber is provided. It is installed, the middle end has a secondary burner and a second high-pressure fan, and one end of the upper end constitutes the combustion chamber outlet 45.

The dust collector prevents inflow of the dust collector inlet 51 and the dust collector body 56, the outlet pipe 52, and the fresh air into which the exhaust gas from the combustion chamber 40 flows, and when the dust is full, It is composed of a sealing valve 53 for discharging dust, a dust collecting box 54 for storing the collected dust, and a suction fan 55 connected to the outlet pipe 52 to suck air.

Next, the operation of the wastewater treatment apparatus according to the preferred embodiment of the present invention configured as described above will be described in detail with reference to FIG.

First, when a predetermined amount or more of wastewater is supplied from the outside to the wastewater storage tank of the wastewater supply unit, the burner of the combustion chamber is ignited to be heated to maintain an appropriate temperature inside the combustion chamber, and the high pressure pump is operated, such as a valve at the bottom of the wastewater storage tank. When a certain amount of waste water flows through the metering feeder, the waste water is sprayed into very small particles from the spray nozzle, and a suction fan is operated to smooth air flow in the combustion chamber, and other waste fuels and other waste fuels are also introduced into the combustion chamber through the inlet. It can be put in. One or two burners are operated during combustion, and the burned exhaust gas is sent to the dust collector inlet through the combustion chamber outlet, and the dust contained in the exhaust gas sinks due to its own weight in the dust collector. When the sealing valve is stacked on the bottom of the main body, the dust is discharged to the dust collector, and only the gas from which the dust is removed is discharged to the outside through the outlet pipe. Dust collected in the dust collector has no harmful components and can be easily disposed of or used for fertilizer.

As shown in FIG. 2, another embodiment of the present invention is installed in connection with the combustion chamber outlet and the dust collector inlet, and a combustion chamber outlet pipe connecting the combustion chamber and the dust collector is discharged after cooling and combustion of the combustion chamber exhaust gas. It serves as the primary collection of dust. A cooling tube for cooling exhaust gas is installed inside the U-shaped combustion chamber outlet pipe, and a water pump for supplying cooling water into the cooling tube outside the U-shaped combustion chamber pipe, and circulated in the cooling tube. A water tank for storing the coolant is installed to cool the hot gas discharged from the combustion chamber by the circulation of the coolant, and the dust collected through the check hole 484 installed on one side of the pipe is taken out and the maintenance and inspection of the cooling tube is performed. You lose.

In addition, for the same purpose, as shown in FIG. 1, a water outlet 486 formed at one side of the combustion chamber outlet pipe 48 and configured to draw water accumulated at the bottom may be configured.

In another embodiment of the present invention, as shown in Figure 3, in order to save fuel and utilize waste materials on one side of the combustion chamber, when the waste fuel pulverized in the pulverizer is put into the pulverization input pipe through the hopper air pressure of the blower The pulverized product is introduced into the combustion chamber through the pulverized material inlet, and when the pulverized material is not introduced, a pulverized material input device including a valve 64 installed to block the pulverized material input pipe may be further provided.

As described above, in the practice of the present invention, wastewater containing waste oil such as oil-based printing ink, lubricating oil, cutting oil, etc. is treated in the combustion chamber, so that the water evaporates quickly and the sludge is completely incinerated. It has the effect of completely eliminating environmental pollution.

In addition, it is a very useful invention in the industry, such as by burning the waste fuel that can be incinerated together to reduce the fuel consumption of the burner, as well as the increase in waste water treatment amount per unit time with two or more combustion chambers.

Claims (4)

The inside of the combustion chamber is separated into three or more stages by two or more partitions 43 and 44 so that the spray waste water flows in an S-shape, and the primary burner 20 and the primary burner are formed at one side of the combustion chamber lower end. A first high pressure fan 21 for supplying high pressure air is installed at the bottom, and an air fan 47 for supplying oxygen in the combustion chamber is installed at the bottom. 30 and a second high pressure fan 31 for supplying high pressure air to the secondary burner are installed, and includes a dust collecting device 50 for collecting dust contained in the gas discharged through the combustion chamber. In the wastewater treatment apparatus, The lower end of the combustion chamber further comprises a spray nozzle 14 for spraying the wastewater installed on the floor near the primary burner into the combustion chamber, and one side wall of the combustion chamber is an inlet for injecting flammable waste and drawing out ashes ( 41 is formed, the combustion chamber and the dust collector are connected via a U-shaped combustion chamber outlet pipe 48, and the combustion chamber outlet pipe for the cooling of the exhaust gas on the side close to the dust collector (485) Wastewater treatment apparatus characterized in that the installation. The cooling pipe 481 for cooling exhaust gas is provided inside the U-shaped combustion chamber outlet pipe 48, and cooling water is supplied to the outside of the U-shaped combustion chamber outlet pipe. Water pump (482) and a water tank (483) for storing the cooling water circulated in the cooling pipe is installed, characterized in that the waste water treatment apparatus. delete The method according to claim 1, further comprising: a pulverized product input pipe (65); A hopper 63 formed on an upper portion of the pulverized product input pipe for inputting the waste fuel pulverized in the pulverizer 62 into the pulverized product input pipe 66; A pulverized material inlet 65 connected to the inlet 41 of the combustion chamber 40 to inject pulverized waste fuel into the inlet; A valve (64) installed inside the pulverized substance input pipe to adjust an amount of pulverized substance; Waste material treatment apparatus further comprises a pulverized material input device (60) consisting of a blower (61) for blowing the pulverized waste fuel introduced into the pulverized material input pipe to the pulverized material inlet (65).