KR100381901B1 - The treatment system of discharging water in the treatment equipment of sewage and serious contaminated rivers water utilizing the contact oxidation method - Google Patents

Abstract

In the present invention, the effluent treatment system of the deeper stream and sewage and sewage treatment facilities using the catalytic oxidation method includes the inflow distribution tank, the aeration contact oxidation tank, the precipitation contact oxidation tank, the outflow storage tank, the sludge storage tank, and the acid pipe. In the apparatus for treating polluted river water, sewage, and sewage by applying a contact oxidation method using a contact medium in the base and sedimentation contact oxidation tank, it is installed on one side of the inlet distribution tank to control the water level of the treated water flowing from the inlet Installed on one side of the outflow storage tank, and each movable bank for adjusting the level of outflow water, the interface between the inflow distribution tank and the aeration contacting tank, the interface between the aeration contacting tank and the sludge hopper, and the contact oxidation Perforated perforated walls (7-15% of the area) formed on the interface between the tank and the outflow reservoir, and contacting the aeration section The sludge deposited in the trapezoidal sludge hopper formed between the septic tank and the settling contact tank is transferred to the sludge storage tank through an air lift, and one side of the sludge storage tank has a supernatant water storage tank partitioned by a movable all-weather bank, and the inflow distribution Installed in the tank and the outflow storage tank to prevent the sludge from being closed by the sludge and the aeration pipe for supplying dissolved oxygen at all times or intermittently to the treated water discharged, and in the aeration part contact oxidation tank and the precipitation contact oxidation tank. At least one contact medium selected from the group consisting of crushed stone having a porosity of 30 to 40% or a porosity of 80% or more is further provided.

Description

The treatment system of discharging water in the treatment equipment of sewage and serious contaminated rivers water utilizing the contact oxidation method

The present invention relates to a effluent treatment system for deepening contaminated river water, sewage and sewage treatment facilities using a catalytic oxidation method, and more specifically, to reduce contaminant concentration by increasing the contact surface of deep contaminated river water and sewage or sewage and contact media. The contact oxidation method is applied, but at least one selected from the group consisting of crushed stone and plastic is used as the contact medium, and the contact oxidation tank is separated into the aeration contact oxidation tank and the precipitation contact oxidation tank, and the aeration contact oxidation is performed. In the tank, continuous or intermittent aeration is to be made, and trapezoidal sludge hopper is installed at the front end of the contact oxidation tank of the precipitation section, and oxygen is supplied to the inlet distribution tank and the outflow storage tank to supply oxygen, and the porosity of the contact media To reduce the size of the facility, and to install the air lift facility. This is to facilitate, and to, to install a storage tank sludge concentrate, the precipitated sludge to facilitate the treatment of the sludge.

Intensive pollution Many water treatment processes have been developed to reduce the pollutant loads of river water, sewage and sewage, and their applicability has been verified, and various types of catalytic oxidation processes have been applied to the site, and to improve the efficiency of contact media Many media have been developed, and in recent years, there are many artificial alternative media in terms of supply shortage of gravel media and preservation of the natural environment. In addition to the removal of organic contaminants, additional treatment of nitrogen and heavy metals is possible. Highly efficient media are being developed.

Catalytic oxidation is a method of purifying water quality through sedimentation, adsorption, and digestion by microorganisms by passing river water and sewage through contact oxidation tanks filled with gravel, crushed stone or various media. 80mg / l or less) is used for the sewage treatment, and the diffuser is installed at the bottom of the contact oxidation tank to remove aeration and sludge.

The general water purification apparatus by the catalytic oxidation method includes a primary storage tank that collects contaminated river water with various wastewater discharged from a home, a factory, or a non-point source, and removes sludge that is settled. A contact oxidation tank in which contact materials such as gravel, waste concrete, and waste tire are embedded to precipitate, adsorb, and biologically oxidatively decompose organic matter and suspended matter in the river water that has passed through the storage tank, and the purified river water that has passed through the contact oxidation tank It is composed of a secondary storage tank for intake and discharge, and an acid pipe is installed under the contact oxidation tank to facilitate contact oxidation and sludge discharge of the pollutant.

The catalytic oxidation method is easy to maintain, has large sludge retention in the tank, biodiversity, is effective in removing substrates with low decomposition rate, buffer ability against load and quantity fluctuation, as well as hardly degradable and harmful substances. High resistance to water, strong fluctuations in water temperature, no need for sludge return, low sludge generation, suitable for small-scale facilities, and can be used as a post-treatment of high-density wastewater. It is difficult to agitate the media in the reactor uniformly, the aeration cost is relatively high, and the biomass generated in the media is determined by the loading conditions. There is a disadvantage that the construction cost is high.

In particular, since wastewater treatment by general catalytic oxidation is excessively expensive, there is a disadvantage in that treatment efficiency is lowered due to no aeration, and when air is introduced, there is a problem that the diffuser is closed by sediment. Due to the low porosity of the contact media, the size of the contact oxidation tank is increased or the treatment efficiency is lowered, sludge is not easily removed, and dissolved oxygen is insufficient in the discharged treated water, which greatly affects the growth of aquatic organisms. There was a problem.

Therefore, the main object of the present invention for solving the problems and drawbacks of the prior art is to increase the porosity of the contact medium to improve the treatment efficiency of the contact oxidation tank, as well as to further increase the pollution of the sludge, sewage, Another object of the present invention is to install an acid pipe in the inlet distribution tank and an outflow storage tank to supply dissolved oxygen, thereby preventing the acid pipe from being closed by the sediment, while contact oxidation. The present invention provides a effluent treatment system for intensified pollution, sewage, and sewage treatment facilities that promotes the production of microorganisms in the tank and protects the growth of aquatic plants by supplying oxygen to the treated water that flows out. Another purpose of the partition formed by the operation of the full width bank on one side of the sludge storage tank By forming a supernatant reservoir, the sewage desorbed from the contact media in the sludge hopper can be easily separated and circulated to the inlet distribution tank by transporting the sludge into the sludge reservoir via air lift. It is another object of the present invention to form a porous wall perforated at the interface between the aeration portion, the sludge hopper and the outflow reservoir, so that the treated water is uniformly distributed and the inflow distribution tank In addition, by installing movable banks in the outflow storage tank, it is to provide a effluent treatment system for the deeper streams, sewage, and sewage treatment facilities that maintain a constant flow rate in the inflow distribution tank.

In order to achieve the above object as well as other objects that can be easily expressed, the present invention applies a contact oxidation method to increase the contact surface of the deeper contaminated river water and sewage or sewage and the contact media to reduce the contamination concentration, but as crushed stone. At least one selected from the group consisting of plastics, the contact oxidizing tank is separated into an aeration contacting oxidation tank and a precipitation contacting oxidation tank, and in the aeration contacting oxidation tank, a continuous or intermittent aeration is made. , The trapezoidal sludge hopper is installed at the front end of the contact oxidation tank of the sedimentation part, and the oxygen pipe is installed in the inlet distribution tank and the outflow storage tank to supply oxygen, and the size of the facility is reduced by increasing the porosity of the contact media. A lift facility is installed to facilitate the discharge of sludge. The sludge was concentrated and settled to facilitate treatment of the sludge.

1 is a process diagram of a system according to the invention,

2 is a schematic plan view of the system of the present invention,

3 is a schematic cross-sectional view of the system of the present invention,

4 is a perspective view of a contact medium used in the present invention.

* Explanation of symbols for the main parts of the drawings.

1. Inlet 2. Inlet distribution tank

3. Aeration part contact oxidation tank 4. Precipitation part contact oxidation tank

5. Sludge Hopper 6. Grating

7. Sludge Removal 8. Air Lift

9. Diffuser 10. Outflow reservoir

11. Outflow reservoirs 12. Outlets

13. Sludge Reservoir 14. Superior Water Return Pipe

15. Superior water reservoir

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

It consists of inflow distribution tank, aeration part contact oxidation tank, sediment part contact oxidation tank, outflow storage tank, sludge storage tank and acid pipe, and by applying contact oxidation method using contact media in the aeration part and precipitation contact oxidation tank, polluted river water and sewage, In the apparatus for treating sewage, each operation bank is installed on one side of the inlet distribution tank to adjust the water level of the treated water flowing from the inlet, and each movable bank for adjusting the water level of the treated water installed and installed on one side of the outlet storage tank And perforated perforations formed in the interface between the inlet distribution tank and the aeration contacting tank, the interface between the aeration contacting tank and the sludge hopper, and the interface between the precipitation contacting oxidation tank and the outflow storage tank (7-15% of the area). Air sludge deposited on the wall and the trapezoidal sludge hopper formed between the aeration portion contact oxidation tank and the precipitation contact oxidation tank Transfer to the sludge storage tank through the shaft, but one side of the sludge storage tank and the supernatant water storage tank partitioned by the operation of the full width bank, installed in the inlet distribution tank and the outflow storage tank and prevented from being closed by the sludge while being discharged from the inside of the contact oxidation tank At least one selected from the group consisting of an acid pipe for supplying dissolved oxygen at all times or intermittently to water, and crushed stone having a porosity of 30 to 40% or plastic having a porosity of 80% or more in the aeration part contact oxidation tank and the settling part contact oxidation tank. The above contact media is further provided.

That is, the intensification of the influent river, sewage, and sewage treatment facilities using the catalytic oxidation method according to the present invention is an inlet (1), which receives influent water and discharges the wastewater discharged from the sewage treatment facility. It is precipitated, adsorbed, and oxidized by an inlet distribution tank (2) for storing and distributing it to the aeration contact oxidizing tank, an aeration contact oxidizing tank (3) for removing contaminants by the contact filter (16), and a contact filter (16). Precipitate Contact Oxidation Tank (4), Sludge Hopper (5) to Collect Precipitated Sludge, Outflow Reservoir (10) to Collect Treated Effluents, Outlet (11) to Dispose of Treated Water, and Precipitation Contact Oxidation (4) It consists of a sludge storage tank 13 for sedimentation by storing the sludge precipitated in the.

The inlet (1) has a circular or rectangular shape as a part for collecting the polluted river water and sewage, the effluent from the sewage treatment facility to flow into the contact oxidation tank, and has a movable bank in the inlet distribution tank (2) (18; weir) is installed and the flow rate in the inlet distribution tank (2) is kept constant by adjusting the water level using the movable bank (18).

The inflow distribution tank (2) is to uniformly distribute the inflow water introduced through the inlet (1) to the aeration section contact oxidation tank (3), when there are two or more aeration section contact oxidation tank (3) A partition 19 is provided below to uniformly distribute the aeration part contact oxidation tank 3, and the part where the inflow distribution tank 2 and the aeration part contact oxidation tank 3 contact each other has a hole (7 to 15 relative to the area). %) The wall 20 is installed to uniformly flow into the aeration contacting oxidation tank 3.

The aeration part contact oxidation tank (3) is a part which oxidizes and removes organic contaminants contained in the inflow water by the microorganisms, and as the contact media (16), only the synthetic resin material having a porosity of 80% or more or crushed stone having a porosity of 30 to 40%. , Mixed media containing less than 30% of gravel is used, and the contact media is determined in consideration of various conditions such as the site and water quality of the installation, and the aeration means (not shown) is installed at the bottom of the intermittent bottom or Make sure there's always an aeration.

The precipitation part contact oxidation tank (4) is a contact medium used as a portion where the organic and inorganic substances oxidized in the aeration part contact oxidation tank (3) is precipitated and removed, and the lower sludge is used to reduce the volume by the oxidation of microorganisms. Is used for crushed stone with 30-40% porosity, mixed gravel only, or mixed media with less than 30% synthetic resin media with porosity of 80% or more, and contact media are determined in consideration of various conditions such as site and water quality do.

Most of the SS (Suspended solid) removal in the catalytic oxidation method is made near 1/3 of the contact oxidation tank, so sludge is deposited, so that the sludge hopper (5) is placed in the contact contact oxidation tank (4) to have a function of collecting sludge. The shape of the sludge is inclined in a trapezoidal shape so that the sludge is easily accumulated when the sludge is discharged.

On the other hand, the sludge hopper 5 supports the contact medium 16 on the upper side, and separates the sludge hopper 16 on the lower side, and the sludge is detached from the media grating (6) to secure a space that can fall into the sludge hopper (5) ; greating) is installed, the material of the grating (6) is made of SUS or FRP.

In addition, the sludge removal port 7 is a part for discharging the sludge using an underwater pump, a water pump, an inhaler, etc. (not shown), and is connected to the grating 6 on the sludge hopper 5, and the contact media 16 The contact part is made of SUS network to facilitate the accumulation of sludge during sludge discharge operation.

In addition, the air lift (8) is a facility installed to discharge the sludge deposited in the sludge hopper (5) to blow the air by using an air blower (not shown) to take out the sludge and transport it to the sludge storage tank (13). do.

The diffuser 9 is divided into an diffuser in the aeration contacting oxidation tank 3 and an diffuser in the precipitation contacting oxidation tank 4, and the diffuser 9 in the aeration contacting oxidation tank 3 is a microorganism. This or intermittent aeration is made to supply oxygen necessary to oxidize the organic matter, and the diffuser 9 in the sediment contacting oxidation tank 4 has sludge deposited in the voids between the contact media 16. It is a part that supplies air to remove the gas, and it operates only during sludge discharge operation.

The outflow storage tank 10 is a place where the effluent treated through the aeration section contact oxidation tank 3 and the precipitation contact contact oxidation tank 4 accumulates, and the part contacting the contact section of the precipitation contact oxidation tank 4 has a hole (area ratio). 7-15%) walls 20, and when connected to two or more sets of partitions (not shown) in the center below the water level to separate the tanks.

In the case of the treated water treated through the contact oxidation tanks (3, 4), dissolved oxygen (DO) in the water becomes scarce and if discharged into the river as it is, it adversely affects the river ecosystem (death of fish, anaerobicization of the stream, etc.). By installing the acid pipe 11 in the lower portion of the outflow storage tank 10 by supplying oxygen to recover the dissolved oxygen to discharge to the river to remove the adverse effects of the river ecosystem.

The outlet 12 is a facility for accumulating the treated water treated in the contact oxidation tanks 3 and 4 and discharging the discharge water into the discharge water area. Adjust

The sludge storage tank 13 is a facility for storing the sludge introduced by the air lift 8, and the sludge storage tank 13 separates the supernatant from the sludge by gravity settling of the sludge and concentrates the sludge by gravity. It was installed inclined so that it could be easily accumulated when discharging sludge.

The supernatant conveying pipe 14 is a conveying pipe for transferring the supernatant water separated from the sludge storage tank 13 to the inflow distribution tank 2, and the supernatant water storing tank 15 stores the supernatant water separated from the sludge storage tank 13. The part in contact with the furnace sludge storage tank 13 is provided with a movable full width weir (not shown) to adjust the flow rate.

Referring to the operation of the system of the present invention configured as described above, first, the polluted river water and sewage or effluent treated in the sewage treatment facility is collected and discharged through the inlet distribution tank 2 (the number of contact oxidation tanks 2 When more than one tank, the inflow of water into the tank evenly distributed) flows into the aeration portion contact oxidation tank (3) by the inflow oil hole wall (20).

In the aeration contact oxidizing tank (3) is used as an oxygen source used by microorganisms to oxidize the organic matter by blowing air into the intermittent, intermittent aeration to help oxidize the organic matter, and is treated in the aeration contact oxidizing tank (3) The treated water is transferred to the precipitation contact oxidation tank (4), and in the precipitation contact oxidation tank (4), the suspended solids contained in the inflow water are precipitated and adsorbed, and the oxidized dissolved organic matter in the inflow water is used to purify the inflow water. The sludge hopper (5) was installed at the lower part to collect and collect the suspended solids. Also, the diffuser (9), sludge removal port (7), and air were installed at the lower part to remove the sludge deposited between the contact media (16). A lift 8 facility was installed.

The purified water is introduced into the outflow storage tank 10 through the outflow pore wall 20 and by the outflow storage tank 11 because it is very low due to the depletion of dissolved oxygen during the contact oxidation tanks 3 and 4. It is reaerated to recover dissolved oxygen and discharged through the outlet port 12.

On the other hand, the sludge precipitated in the precipitation contact oxidation tank (4) is introduced into the sludge storage tank (13) by the sludge removal port (7), the air lift (8), the introduced sludge is sedimentation separation and the supernatant is the inflow distribution tank The sludge returned and treated in (2) is concentrated and deposited to a certain degree, and then discharged by a vacuum suction vehicle or a sludge pump and treated in a sewage treatment plant.

Synthetic resin contact material used in the present invention is a hemispherical or polyvalent pyramid shape is formed in a completely empty space, in the case of a hemispherical contact media consists of only four support parts, polygonal contact shape contact media In this case, only the line segments constituting the polygonal horn have a shape made of support, so that the porosity is made to the desired degree.

The following examples illustrate the invention in more detail, but do not limit the scope of the invention.

Example 1

2 and 3 install the effluent treatment system of the deeper pollution water and sewage, sewage treatment facility using the catalytic oxidation method of the present invention, the aeration contact contact oxidation tank with a porosity of about 80% The filter medium is used, and the contact oxidation tank of the sedimentation part is made of gravel having a porosity of about 30% as the contact medium, and the inflow amount is 200㎥ / day, the aeration time of the contact oxidation tank is 30 minutes, and the contact oxidation tank of the precipitation part. The residence time was 40 minutes.

In this system, BOD and SS, which are the water quality standard items of rivers, are the main treatment targets, so BOD was selected to analyze the treatment efficiency of organic pollutants, and SS was selected as the suspended solids. In addition, DO concentration was measured to determine the activity level and aeration capacity of the microorganisms. In the measurement method of water quality items, indoor analysis items were conducted according to the process test method, and the field water quality measurement items were WTW F / SET-3 multimeter.

The measurement method for each item is as follows.

* DO: Field measurement using multi sensor of WTW F / SET-3 multimeter.

* BOD: Water pollution process test method (Ministry of Environment).

* SS: Calculated by gravimetric method after filtration with glass fiber filter (GF / C).

The above items were analyzed for influent and effluent and the results are shown in Table 1 and Table 2.

Comparative Example 1

Same system as in Example 1 except that the same system as the system of the present invention is installed, except that the contacting oxidation tank and the precipitation contacting oxidation tank are constituted by one contact oxidation tank, and gravel having a porosity of 35% is used as the contact medium. The water quality test was carried out by the method, and the results are shown in Tables 1 and 2.

division BOD (mg / l) SS (mg / L) DO (mg / L) Influent of Example 1 25 25 4 Effluent from Example 1 4 6 4 Influent of Comparative Example 1 25 25 4 Effluent of Comparative Example 1 10 10 0.3

division BOD treatment efficiency (%) SS treatment efficiency (%) DO consumption rate (%) Example 1 84 76 0 Comparative Example 1 60 60 92.5

As can be seen from Table 1 and Table 2, it can be seen that the system of the present invention has an excellent effect on water purification.

In addition, it is possible to prevent adverse effects such as death due to oxygen deficiency of fish by oxygen transfer due to aeration without consumption of DO of inflow and outflow water.

As described above, in the present invention, at least one or more selected from the group consisting of crushed stone and plastic is applied to the deeper contaminated river water and the sewage or sewage by increasing the contact surface of the contact media and reducing the contamination concentration. The contact oxidation tank is separated into an aeration contact oxidation tank and a precipitation contact oxidation tank, and the aeration contact oxidation tank is always or intermittently aerated, and a trapezoidal shape at the front end of the contact contact oxidation tank. Sludge hopper is installed, acid pipe is installed in the inlet distribution tank and outlet storage tank to supply oxygen, the pore ratio of contact media is increased, the size of facility is reduced, and the air lift facility is installed to facilitate the discharge of sludge. Sludge storage tank is installed to concentrate and settle the sludge to facilitate the treatment of sludge. It can work.

Claims (6)

It consists of inflow distribution tank, aeration part contact oxidation tank, sediment part contact oxidation tank, outflow storage tank, sludge storage tank and acid pipe, and by applying contact oxidation method using contact media in the aeration part and precipitation contact oxidation tank, polluted river water and sewage, In the apparatus for treating sewage, Installed on one side of the inflow distribution tank to adjust the level of the treated water flowing from the inlet, each movable bank for adjusting the level of the treated water installed and installed on one side of the outlet storage tank; Perforated perforated walls (7-15% of area) formed in the interface between the inlet distribution tank and the aeration contacting tank, the interface between the aeration contacting tank and the sludge hopper, and the interface between the precipitation contacting oxidation tank and the outflow reservoir; A supernatant water storage tank, which is formed by trapping the sludge hopper formed in the trapezoidal sludge hopper formed between the aeration contacting oxidation tank and the precipitation contacting oxidation tank to the sludge storage tank through an air lift, and partitioned by an operation full width bank on one side of the sludge storage tank; An diffuser installed in the inflow distribution tank and the outflow storage tank to supply dissolved oxygen at all times or intermittently to the inside of the contact oxidation tank and the treated water discharged while being prevented from being closed by sludge; And Contact oxidation method further comprises at least one contact medium selected from the group consisting of crushed stone of 30% to 40% of porosity or plastic of 80% or more of porosity in the aeration part contact oxidation tank and precipitation part contact oxidation tank. Effluent pollution treatment system of river water, sewage and sewage treatment facilities. delete delete The catalytic oxidation method according to claim 1, wherein only the synthetic media having a porosity of 80% or more or a mixed media containing less than 30% of crushed stone having a porosity of 30 to 40% is used as the contact media of the aeration-contacting oxidation tank. Intensive pollution using effluent treatment system in river water, sewage and sewage treatment facilities. 2. The catalytic oxidation method according to claim 1, wherein as the filter medium of the precipitation contact oxidizing tank, a mixed filter material containing only 30 to 40% of porosity or a synthetic resin material having a porosity of 80% or more is mixed to less than 30% is used. Intensive pollution using effluent treatment system in river water, sewage and sewage treatment facilities. delete