KR200436906Y1 - Stirring equipment including collector of rising sludge on the surface of the water for advanced treatment - Google Patents

Abstract

The present invention is equipped with a rotating shaft, a drive device for driving the rotating shaft, an anoxic tank in which denitrification reaction occurs, a precipitation tank in which residual sludge precipitates after the denitrification reaction, and an anaerobic tank in which phosphorus release reaction takes place in one complex reaction tank. An agitator comprising: an upper scraper comprising one or more collecting rotary blades connected to the rotary shaft and configured to collect floating sludge generated in the anoxic tank, the settling tank and the anaerobic tank to one side, and a collecting plate connected to one side of the collecting rotary blades; An air lift formed of a pipe connected to the outside and opened to suck out the sludge from the outside; and collecting the sludge generated from the anaerobic tank, the settling tank and the anaerobic tank, and contaminating the treated water due to the outflow of the sludge from the sludge. It is effective to prevent.

Floating Sludge, Collecting, Denitrification Gas, Scraper, Spill, Emission

Description

Advanced treatment agitator with flotation sludge collector {STIRRING EQUIPMENT INCLUDING COLLECTOR OF RISING SLUDGE ON THE SURFACE OF THE WATER FOR ADVANCED TREATMENT}

1-a cross-sectional view of a stirring device for altitude treatment according to the prior art;

Figure 2-Advanced processing agitator equipped with a flotation sludge collector according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: axis of rotation 20: external inflow passage

30: treated water inlet pipe 40: treated water pipe

50: rotary blade portion 52: the upper rotary blade

54: center rotor blade 54a: upper discharge hole

56: lower rotary blade 56a: collecting plate

56b: lower outlet hole 100: complex reactor

110: flotation sludge collector 120: upper scraper

122: collection rotary blade 124: collection plate

140: air lift 142: air intake

144: sludge discharge pipe

The present invention relates to an advanced treatment agitation device for domestic sewage, sewage and various industrial wastewater, and more particularly, to an advanced treatment agitation device provided with a flotation sludge collector for collecting and discarding sludge floating on the upper portion.

In general, biological processes (hereinafter, referred to as advanced treatment processes) have been actively used as a method for removing nitrogen, phosphorus, and the like.

This advanced treatment process basically consists of anaerobic tank, aerobic tank, anoxic tank, and the nitrogen and phosphorus treatment in the above configuration, hereinafter will be described briefly each function of the anaerobic tank, aerobic tank, anoxic tank for nitrogen and phosphorus treatment. .

First, the process of anaerobic tank is that phosphorus accumulating microorganism (PAO) elutes phosphorus using organic matter, and in the aerobic tank, air is blown to remove phosphorus by oxidizing, nitrifying and ingesting more phosphorus than the amount of eluted phosphorus. In the anoxic tank, the denitrification microorganism (denitrifier) converts the nitrate nitrogen returned from the aerobic tank into nitrogen gas using organic matter.

The reason why the advanced treatment is required for the treatment of nitrogen and phosphorus is due to the nature of the chemicals. In other words, the nitrogen components in the wastewater that are discarded as contaminants are organic nitrogen (Organic-N), ammonia nitrogen (NH ₃ ^-- N), nitrite nitrogen (NO ₂ ^-- N), and nitrate nitrogen (NO _3). ^- -N) presented in a form, such as, usually occupies the largest amount of the ammonium nitrogen. Nitrification and denitrification are required to treat ammonia nitrogen. First, nitrification converts ammonia to nitrate under aerobic conditions, and nitrate is converted to nitrogen gas in denitrification. Should be removed.

On the other hand, the general forms of phosphorus in sewage are organic phosphorus (Organic Phosphorus), orthophosphate (H ₂ PO ₄ ^2- , HPO ₄ ^2- , PO ₄ ^3- ), and poly phosphate (Poly Phospate) Polyphosphoric acid is hydrolyzed in water and converted to the phosphate form.

On the other hand, microorganisms use phosphorus as a substance for cell synthesis and energy transfer, so that 10-30% of phosphorus in the treated water through the advanced treatment process is removed by the metabolism of the microorganisms. The microorganisms for the removal of phosphorus, in the anaerobic state reacts with the volatile fatty acids in the treated water to release the phosphorus accumulated in the microorganisms out of the body, the concentration of phosphorus in the water increases. In aerobic conditions behind an anaerobic region, microorganisms that released phosphorus in anaerobic conditions are overtaken by a luxury uptake of phosphorus in the water above the normal level. Thus, the key to phosphorus removal in advanced processing is the alternating exposure of phosphorus-removing microorganisms to anaerobic and aerobic conditions.

Therefore, in order to remove nitrogen and phosphorus, conditions such as an aerobic tank, anaerobic tank, and anoxic tank are required. Depending on how these conditions are designed, the efficiency of an advanced treatment and the installation cost are determined.

As described above, various methods have been developed and used for the advanced processing of nitrogen and phosphorus, and the A ₂ O method is used as the most commonly represented process, and in addition, the modified Bardenpho method and the University of Cape Town (UCT) Law, VIP (Virginia Initiative Plant) method, etc. are used, but the above methods are designed to arrange anaerobic tank, anaerobic tank, aerobic tank, etc. in series, there is a problem that requires a large installation area and installation cost, There is a problem in that excessive driving costs are required when driving.

In order to solve this problem, methods for reducing installation costs have recently been developed by using a reaction tank that performs a combination of anaerobic tank, anoxic tank, and aerobic tank required for nitrogen and phosphorus treatment. As a method of using a reaction tank that simultaneously performs the role of an anaerobic tank and an anoxic tank, there is a nitrogen and phosphorus treatment apparatus in wastewater using a complex reaction tank of Korean Patent Publication No. 0649099 designed by the present inventors.

1 is a cross-sectional view showing the internal configuration of a conventional composite reactor.

Referring to FIG. 1, the conventional complex reaction tank 30 is installed in a storage container 30a and vertically downward in a central portion of the storage container 30a, and the treated water into which the treated water supplied from the not-shown aerobic tank is introduced. It is connected to the inlet pipe 32, the lower end of the treated water inlet pipe 32 is installed vertically downward, a plurality of discharge holes (36c) formed radially protruding on the outer circumferential surface so that the treated water is discharged in an upward flow Water rotary pipes (36a) is provided, comprising a scraper (38) formed radially at the end to scrape the sludge accumulated at the bottom of the storage container (30a) and the treated water inlet pipe The rotating shaft 33 is installed to penetrate the inside of the 32 and rotates the treated water pipe 34 by the external power transmitted, and is installed on one side of the upper portion of the storage container 30a. Treated water outflow passage (35) Is provided on the bottom of the reservoir (30a), it consists of a discharge passage 39 for discharging the sludge accumulated in the bottom portion to the outside.

Through this configuration, there is an advantage that the existing nitrogen and phosphorus removal process can occur simultaneously in the complex reaction tank, but as an outflow of the sludge generated in the anaerobic tank and the anaerobic tank where the nitrogen gas (N ₂ ) generated by the denitrification reaction is generated. There is a problem that the contamination of the treated water occurs.

The present invention is to solve the above problems, it is an object of the present invention to provide a stirring device equipped with a flotation sludge collector that can collect and discard the sludge floating on the surface of the treated water.

It is also an object of the present invention to provide an agitating device equipped with a flotation sludge collector which is provided with power from a rotating shaft provided in the conventional apparatus and saves space of the equipment without additional configuration.

In order to achieve the object as described above, the present invention is provided with a rotating shaft and a driving device for driving the rotating shaft, an anoxic tank in which denitrification occurs, a settling tank in which residual sludge precipitates after the denitrification reaction, and an anaerobic tank in which phosphorus release reactions occur. In the high-treatment agitating device consisting of one complex reaction tank, one or more collecting rotary blades connected to the rotary shaft and formed to collect floating sludge generated in the anoxic tank, the settling tank and the anaerobic tank to one side, and on one side of the collecting rotary blade An upper scraper composed of a connected air lift; And an air lift formed of a pipe connected to the outside of the upper part to suck out the sludge and discharge it to the outside.

The air lift may include an air inlet configured to open an upper portion and suck air to a lower portion thereof; And a sludge discharge pipe connected to the air inlet for discharging the sludge to the outside.

And, the rotating shaft is characterized in that rotated at a rotational speed of 1 ~ 5 RPM.

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

Figure 2 is a stirring device equipped with a floating sludge collector according to a preferred embodiment of the present invention.

As shown in FIG. 2, the advanced treatment agitation device equipped with a flotation sludge collector is composed of a flotation sludge collector 110 composed of a complex reactor 100, an upper scraper 120, and an air lift 140.

First, the complex reaction tank 100 is formed by opening the upper portion, the inside is provided with a rotary shaft 10 formed vertically. In addition, the rotating shaft 10 penetrates through the tubular treatment water inlet pipe 30, and the treatment water inlet pipe 30 has an external inflow passage 20 therein to allow the treatment water to flow therein and flow downward. It is installed. In addition, a plurality of treatment water pipes 40 are connected to a lower end of the treatment water inflow pipe 30. The treatment water pipe 40 is a passage through which the treatment water introduced through the treatment water inlet pipe 30 moves.

In addition, the rotary blade 50 is provided on the outer circumferential surface of the treated water pipe 40. The rotary blade unit 50 is the upper rotary blade 52 is formed of a short length in the horizontal direction in the upper layer, the lower layer is provided with a plurality of layers in the radially formed lower rotary blade 56 is long in the horizontal direction. consist of.

The upper rotary blade 52 only stirs the treated water, while an upper discharge hole 54a is formed on the upper side of the lower rotary blade 56, and the upper discharge hole 54a is formed. In communication with the treated water pipe 40, the treated water is discharged upward through the upper discharge hole 54a. At this time, the treated water discharged to the upper through the upper discharge hole (54a) is discharged in the upstream is formed so that the treated water is better stirred in the direction of the vector sum of gravity and upflow.

Looking at the operation in which the treatment water flows through this configuration in detail, the treatment water inlet and the treatment water pipe 40 connected to the treatment water inlet pipe 30 is connected to the rotary shaft 10 Connected and rotated. At this time, the rotational speed of the treated water pipe 40 is preferably 1 ~ 5RPM. Then, nitrogen, phosphorus treatment, that is, the treated water is completed to be advanced is formed to be discharged to the external pipe (not shown) located on the upper side.

Here, the denitrification microorganism acting in the anoxic tank is fixedly installed on the upper surface of the upper rotary blade 52 to perform the denitrification reaction in which the treated water in the complex reaction tank 100 contacts the microorganism.

And the lower part of the composite reaction tank 100 through the lower rotary blade 56 connected to the rotary shaft 10, the precipitation tank in which the sludge generated in the anoxic tank is precipitated and the precipitated sludge microorganism and the treated water by stirring the anaerobic tank It is formed to stir so that the reaction takes place simultaneously. At this time, the lower discharge hole (56b) is also formed on the upper side of the lower rotary blade 56 is made up of the treated water to actively stir the treated water in the lower portion.

Next, the upper scraper 120 has a plurality of branch-shaped collection rotary blades 122 extending outwardly connected to the rotation shaft 10.

A collection plate 124 made of a rubber material is installed at an outer lower end of the collection rotary blade 122, and when the rotary shaft 10 is rotated, the collection scraper 122 is rotated, and the collection scraper 122 is rotated. When rotated, the collection plate 124 connected to the collection scraper 122 is made to collect by sweeping the sludge injured on the surface while rotating.

Next, the air lift 140 includes an air inlet 142 and a sludge discharge pipe 144.

The air inlet 142 is formed in an open shape, the upper portion is driven to suck the floating sludge collected by the upper scraper 120 to suck the collected sludge to the sludge discharge pipe 144 which will be described later Move it.

The sludge discharge pipe 144 is a passage through which the sucked floating sludge is distributed, and one side is connected to the air suction port 142 and the other side is connected to the outside so that the sucked sludge is distributed to the outside and disposed of.

Looking at the operation of the stirring device equipped with the flotation sludge through this configuration, when driven by a drive device (not shown) formed on the outside, the rotating shaft 10 connected to the drive device (not shown) rotates. The collection rotary blade 122 connected to the rotary shaft 10 is rotated according to the rotary shaft 10. In addition, as the collection rotary blade 122 rotates, the collecting plate 124 collects the floating sludge to one side of the collecting plate 124, and the collected sludge thus collected is an air inlet of the air lift 140. Sucked into 142 is moved through the sludge discharge pipe 144 is disposed to the outside.

The present invention by the above configuration, by collecting the sludge caused by the denitrification reaction, there is an effect of preventing contamination of the treated water due to the outflow of the sludge.

In addition, the power is provided to the rotating shaft for stirring the treated water, there is no need for external power to collect the flotation sludge, there is another effect that can reduce the installation space, and efficiently use the power.

Claims (3)

A rotary shaft 10 and a driving device 20 for driving the rotary shaft 10 are provided, and an anoxic tank in which denitrification occurs, a precipitation tank in which residual sludge precipitates after the denitrification reaction, and an anaerobic tank in which phosphorus release reactions occur, are provided. In the advanced processing agitation device made of a composite reactor, One or more collecting rotary blades 122 connected to the rotary shaft 10 and configured to collect floating sludge generated in the anaerobic tank, the settling tank and the anaerobic tank to one side, and the collecting plate 124 connected to one side of the collecting rotary blade 122. An upper scraper (120) composed of; And an air lift 140 formed of a pipe connected to the outside to open the suction sludge to be discharged to the outside. The method of claim 1, wherein the air lift 140, An air inlet 142 which is open at the top and sucks air to the bottom; Sludge discharge pipe 144 is connected to the air inlet 142 for discharging the sludge discharged to the outside; The rotating shaft 10 according to claim 1 or 2, Advanced treatment agitation device equipped with flotation sludge collector, characterized in that rotated at a rotational speed of 1 ~ 5 RPM.

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