KR100454494B1 - Reactive material-containing cylindrical reactive wall for water collecting tube or well, purification method of contaminated stream water and method for improving quality of stream water using the same - Google Patents

Abstract

The present invention relates to a collecting pipe or a collecting well-containing cylindrical reaction wall containing a reactant, a method for purifying contaminated river water using the cylindrical reaction wall, and a method of improving river water using the cylindrical reaction wall. More specifically, a cylindrical reaction wall including a reactant is prepared and used as a collecting pipe or a collecting well in a bed or riverside filtration method. In addition, the present invention relates to a method for purifying contaminated river water by increasing the filtration efficiency of the riverbed or riverside filtration method using the collection pipe or the cylindrical reaction wall for the sump. The present invention also relates to a method for improving river water quality by using the collecting pipe or the cylindrical reaction wall for the sump.

Description

COLLECTION WATER CONTAINING REACTIVE MATERIALS OR CYLINDER REACTION WALLS FOR RESULT, CONTAMINATION AND METHODS FOR IMPROVEMENT OF CONTAINED STREAM WATER AND METHOD FOR IMPROVING QUALITY OF STREAM WATER USING THE SAME}

The present invention relates to a collecting pipe or a collecting well-containing cylindrical reaction wall containing a reactant, a method for purifying contaminated river water using the cylindrical reaction wall, and a method of improving river water using the cylindrical reaction wall. More specifically, a cylindrical reaction wall including a reactant is prepared and used as a collecting pipe or a collecting well in a bed or riverside filtration method. In addition, the present invention relates to a method for purifying contaminated river water by increasing the filtration efficiency of the riverbed or riverside filtration method using the collection pipe or the cylindrical reaction wall for the sump. The present invention also relates to a method for improving river water quality by using the collecting pipe or the cylindrical reaction wall for the sump.

In spite of the recent increase in population and industrial development, the demand for water is increasing. However, despite the enormous budget being put in place to secure enough water resources for people's lives, there is still a shortage of water. Most of the domestic water is collected and supplied to drift water, but securing raw water by dam construction, which is the main source of intake, requires the securing of candidate sites for dams, opposition from residents and environmental groups, and long time to supply. It is difficult to solve these problems, and the development and dissemination of alternative sources is urgently needed.

In addition, rapid economic development, the transition to high industrial society, and the improvement of people's living standard have increased the amount of river discharge of toxic pollutants, and the water quality of the river is getting worse over time. In addition, due to the concentration of population and the creation of indiscriminate industrial complexes, the water pollution of rivers and lakes, which are the source of water resources, is intensifying.

Due to this situation, the method of directly taking the river water, which is the current water supply source, has many problems. In other words, the existing domestic water purification plants rely on river water for the most part, so the vulnerability is very high in case of water pollution or unexpected water pollution accidents, and when the poisons are introduced into the water, There is no alternative.

Therefore, there is a demand and research and development of an indirect intake method that can remove pollutants through proper pretreatment, and also cope with raw water quality accidents, without directly taking river water into raw water with a new water supply system. Representative indirect water extraction methods include riverbank filtration and riverbed filtration.

The river filtration method is a method of installing a well in the alluvial aquifer of the riverside widely distributed in the river, and pumping the water in the well by using a pump, instead of directly collecting the river water where the water quality has deteriorated directly. It takes advantage of the pollution reduction capabilities of the existing riverside alluvial aquifers. In other words, the contaminated river water passes through the riverside alluvial aquifer to obtain improved water quality by filtration, adsorption, and biological decomposition.

The riverbed filtration method is a method of pumping the collected water by installing a collecting well on the bottom and installing a collecting pipe horizontally on the bottom of the collecting well, and using the physical, chemical and biological characteristics of the riverbed and the groundwater inflow characteristics of the stream. It is to obtain stream water of improved water quality without adversely affecting. In general, the alluvial aquifer at the bottom of the river where the alluvial aquifers such as sand and gravel are formed on the bedrock is called the river bed. The bed is physically composed of sand and gravel, which has good permeability and good filtration performance. As it is inherent in soil, it has a high ability to adsorb contaminants, and has a high ability to decompose pollutants as an environment suitable for living with microorganisms.

However, in order to effectively purify the river water by the river filtration method, the catchment well should be far away from the river, the alluvial aquifer of the river bank should have an appropriate density distribution, and the pollution of the river should not be severe. In addition, in order to effectively purify the river water by the river bed filtration method, the river bed should have a sufficient thickness, the sedimentary layer should have an appropriate density distribution, and the flow rate of the river should not be too high or the pollution degree is too high.

However, in the rivers of Korea, untreated point pollutants and nonpoint pollutants are introduced, and pollution continues. Especially, in the low water season, the pollution is intensified. As such, if the pollution level of the river exceeds a certain level, there is a problem in the efficiency of the riverbank and riverbed filtration methods. Especially, if a problem occurs in the nitrogen and phosphorus control functions that cause eutrophication of the river water, It can act as a barrier.

In addition, there is a problem in that there is a limit to substantially secure the alluvial aquifer required in the riverbed and riverbed, as well as the effect that can be obtained by increasing the thickness and density distribution of the alluvial aquifer.

In addition, in order to improve the environment of the contaminated stream, a method of continuously supplying contaminated water to the contaminated river has been proposed, but in the case of using water filtered by the existing riverside or river bed filtration method, There was a problem that the degree of contamination of water was not uniform, the degree of filtration was not reliable, and it was expensive and not economical.

The present invention can be easily solved even if the reaction wall containing the reactant is applied to the riverside or river bed filtration method, the construction is easy, and the reactant used in the purification treatment reaches the fatigue point and the purification ability is also reduced. It is an object to provide a cylindrical reaction wall for a collecting pipe or a collecting well.

In addition, the present invention, in the riverbank or riverbed filtration method, not only to collect the primary treated water treated through the collecting pipe or the sump of the riverbank and the alluvial aquifer in the riverbed, but also to purify the primary treated water secondarily. It is an object of the present invention to provide a collecting pipe or a cylindrical reaction wall for a collecting well capable of constructing a collecting pipe or a collecting well so as to have a function of collecting during processing.

In addition, the present invention can be immediately purified while collecting water into the collection pipe or the sump while maintaining the flow of the treated water through the alluvial aquifer in the riverside and riverbeds, so a separate post-treatment is required when applying the riverside or riverbed filtration method. It is an object of the present invention to provide a cylindrical reaction wall for a collecting pipe or a collecting well capable of constructing an empty collecting pipe or a collecting well.

In addition, an object of the present invention is to provide a river water purification treatment method capable of purifying river water with a higher efficiency than by the existing riverside or river bed filtration method by configuring a collecting pipe or a water collecting well with the cylindrical reaction wall. .

In addition, the present invention provides a method for easily purifying a stream or other contaminated river to which the filtration method is applied by using the purified river water obtained by applying the cylindrical reaction wall of the present invention to a riverside or river bed filtration method. The purpose.

1 is a cross-sectional view showing an internal configuration of a water collecting tube or a water collecting well cylindrical reaction wall including two reactants as an embodiment of the present invention.

FIG. 2 is a plan view illustrating an internal configuration of a collecting pipe or a collecting vessel cylindrical reaction wall including two reactants as an embodiment of the present invention.

Figure 3 shows an embodiment using the cylindrical reaction wall of the present invention as a collecting pipe in the bed phase filtration method.

Figure 4 shows an embodiment using the cylindrical reaction wall of the present invention as a water collecting well in the riverside filtration method.

* Description of the main parts of the drawings

1. Cylindrical Reactant

2. Cylindrical Reactant

3. Cylindrical reaction wall for collection pipe or sump of the present invention

4. Slit

5. caisson

6. water pipe

7. Sump

11. Primary Filtrate

12. Secondary Filtrate

13. Pump pipe

14. Secondary filtered water pumped through the pump

Referring to the configuration of the water collecting tube or the water collecting well cylindrical reaction wall (hereinafter referred to as the "cylindrical reaction wall of the present invention") manufactured using the reaction material of the present invention with reference to the accompanying drawings.

One or two or more different materials may be used as a reactant for producing the cylindrical reaction wall of the present invention. If the reactants selected are two or more, the reactants are manufactured in a cylindrical shape (hereinafter referred to as a 'cylindrical reactant') each having a different diameter, and each cylindrical reactant has a diameter in order from the smallest to the largest. The outer circumferential surface of the small cylindrical reactant and the inner circumferential surface of the large cylindrical reactant are joined in such a manner that they are manufactured to be the cylindrical reaction wall of the present invention as a whole.

In the cylindrical reaction wall of the present invention, in order to maintain the shape of the cylindrical reactant, a cylindrical caisson may be installed between the cylindrical reactants, the outermost inner cylindrical reactant and the innermost inner cylindrical reactant. The caisson may be used as a water-permeable material known in the art, a slit-impermeable material may also be used. Preferably there is a steel pipe with a slit formed. The permeation rate of the caisson may be determined by a person skilled in the art in consideration of the hydraulic flow of the water quality of the contaminated area, the reactants used and the configuration of the cylindrical reaction wall. 1 and 2 show the internal structure of the cylindrical reaction wall 3 of the present invention manufactured by allowing two reactants 1 and 2 to exist between the permeable caisson 5 as an embodiment of the present invention. Sectional and top view. In the case where the caisson 5 is used for the cylindrical reaction wall 3 of the present invention, two or more permeable caissons 5 of different diameters are arranged in the order of decreasing diameter inside the permeable caisson having the largest diameter. The reactants 1 and 2 are filled between the permeable caissons 5 except for the hollow inside the caisson having the smallest diameter so as to have a cylindrical shape as a whole.

When preparing the cylindrical reaction wall of the present invention including the reactant, what kind of reactant to form the cylindrical reaction wall, how to determine the thickness and diameter of each cylindrical reactant to be configured in what order, etc. The ground conditions of river or river bed where the reaction wall is used, that is, the hydraulic characteristics of the river or river bed, the types and characteristics of contaminants present in the river water, the chemical properties of the river and river bed and soil zones, and the effects of microorganisms, etc. It can be determined by considering. The determination method in consideration of the above matters may be performed within a range that can be easily conceived by those skilled in the art, and matters known in the art may be applied according to the needs of those skilled in the art.

One of the representative criteria for selecting a reactant included in the manufacture of the cylindrical reaction wall of the present invention is a type of ground pollutant. Table 1 below shows the reactants and the reaction mechanism for each ground pollutant.

Table 1: Reactants and Reactor Operations for Each Ground Pollutant

Species Pollution Component Reaction Reaction mechanism Chlorinated Organics Industrial and military facilities such as industrial areas, gas stations and refineries Trichloroethylenetetrachloroethylene Youngga Cheol, Sasang Dust ¹⁾ , Rolled Sludge ²⁾ Desalination of iron Polychlorinated biphenyls Lead / iron bimetal, nanoscale iron Catalytic Desalination Nutrients Landfill Leachage Livestock Wastewater Total Nitrogen Ammonia Nitrogen Zeolite Ion exchange and adsorption reaction Livestock Wastewater Total phosphorus Limestone, steel slag ³⁾ Adsorption and precipitation reaction heavy metal Industrial and Military Facilities Waste Mine Acid Wastewater Cr ⁶⁺ Rolled Sludge, SM Slag Reduction Cadmium, zinc, copper, lead, cyanide, arsenic, mercury Zeolite, steel slag Ion Exchange and Adsorption Reactions sulfate Abandoned Mine Acid Wastewater Sulfate Aluminum hydroxide, steel slag, limestone Precipitation reaction

* 1) filamentary dust; Grind Precipitates dust, Cast iron process industrial waste

2) rolled sludge; Hot Rolling Mill Sludge, Industrial Waste

3) steelmaking slag; Steel Manufacturing Slag, Industrial Waste

The primary treated water 11 treated from the riverside and bed alluvial aquifers is filtered into the secondary treated water 12 through the cylindrical reaction wall 3.

Cylindrical reaction wall of the present invention is characterized in that the riverbank or river bed filtration method can be applied more effectively in order to filter the river water by including the reactant. The reactants used in the manufacture of the cylindrical reaction wall of the present invention induces chemical reactions with the pollutants using the hydraulic flow of the water of the contaminated area, and through this, it is possible to collect and remove the pollutants from the river water.

In order to use the cylindrical reaction wall of the present invention in a riverbank or river bed filtration method, the cylindrical reaction wall of the present invention need only be used as a collecting pipe or a water collecting well, and no separate preliminary work is required. Since it can be installed in a collecting pipe or a water collecting unit, it is easy to modularize the reactants when applying riverside or river bed filtration method, and when the reactants reach the fatigue point, the purification efficiency can be easily changed by simply replacing the cylindrical reaction wall. It can be maintained, so it is easy to follow up.

The cylindrical reaction wall of the present invention may be used as a collecting pipe to be applied to the bed phase filtration method within a range that can be easily conceived by those skilled in the art. Can be applied as needed. Preferably, the cylindrical reaction wall is installed radially buried under the river, and connected to a collection basin continuously installed along the riverside, and then the primary filtrate filtered from the bed alluvial bed is secondary to the cylindrical reaction wall. Filtered. Figure 3 shows an embodiment using the cylindrical reaction wall of the present invention as a collecting pipe used in the bed phase filtration method. As shown in FIG. 3, the primary treated water 11 filtered through an alluvial bed of the lower bed is a collecting pipe 6, that is, a water collecting device of the present invention composed of two cylindrical reactants 1 and 2. It is filtered while passing through the cylindrical cylindrical reaction wall 6, and becomes the secondary treated water 12. At this time, the outermost part of the cylindrical reaction wall for the collecting pipe is applied to the impermeable caisson 5 having the slit 4, which is because the primary treatment water in the lower bed has a large variation in the quantity of water and also a large fluctuation range. The cylindrical reaction wall of the present invention is covered with an impermeable caisson 5 in which the slits 4 are formed in order to control the amount of the primary treated water filtered through the secondary, and the size and frequency of the slits 4 are cylindrical in the present invention. The reaction wall depends on the hydraulic characteristics of the stream to which it is applied. The secondary treated water 12 filtered through the cylindrical reaction wall of the present invention composed of the cylindrical reactants 1 and 2 is collected and pumped in a sump installed at the riverside.

The cylindrical reaction wall of the present invention may be applied to the riverside filtration method using a water collecting well as long as the person skilled in the art can easily conceive of the present invention. Can be applied as needed. Preferably, the cylindrical reaction wall for the sump of the present invention continuously poured vertically to the bottom along the riverside of the stream, and then the primary filtered water filtered from the riverside alluvial aquifer to the sump of the cylindrical reaction wall of the present invention 2 Tea is filtered. Figure 4 shows an embodiment using the cylindrical reaction wall of the present invention as a water collecting well used in the riverside filtration method. As shown in FIG. 4, the primary treated water 11 filtered primarily through an alluvial aquifer in the riverside is a collecting well 7, that is, a house of the present invention composed of two reactants 1 and 2. It is filtered while passing through the crystal cylindrical reaction wall 7 to become the secondary treated water 12. The secondary treated water 12 thus filtered is collected inside the sump, that is, the cylindrical reaction wall of the present invention, and the secondary treated water 12 collected as described above is pumped through the pump pipe 13. .

Using the cylindrical reaction wall of the present invention as a collecting pipe or a water collecting well, when the secondary treated water purified from the stream is discharged into the stream or other highly polluted streams, the secondary treated water has a low pollution degree because of the low pollution degree. It can dilute pollutants contained in high streams. Therefore, by repeating the above process continuously can improve the water quality of the contaminated river. The stream quality improvement method as described above may be performed cyclically in the same stream, and another contaminated river with secondary treated water obtained by purifying through riverside or river bed filtration using the cylindrical reaction wall of the present invention in one stream. May improve stream quality.

Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the present invention is not limited thereto.

EXAMPLE

A vertical sump caisson was made from a steel pipe having a diameter of 2 m and a height of 4.5 m and a slit of 4 mm x 10 mm. A caisson having a diameter of 4 m was installed outside the caisson and zeolite was charged between a caisson having a diameter of 2 m and a caisson having a diameter of 4 m. In addition, a caisson having a diameter of 6 m was installed in the same manner, and a steelmaking slag was filled between the caisson having a diameter of 4 m and the caisson having a diameter of 6 m to prepare a water collecting well having the same shape as that of FIG. 1.

After installing the above water collecting wells at an average 30m from the stream, the secondary treated water was collected. The average hourly intake of the secondary treated water and the contaminants contained in the pumped secondary treated water were examined and listed in Table 2.

Comparative Example 1

In the above embodiment, a vertical sump caisson having a slit of 4 mm x 10 mm in diameter and a height of 2 m, a height of 4.5 cm and a slit of 3 m away from where the vertical sump is installed was collected, and then the first treated water was collected. The average hourly intake of the primary treated water and the contaminants contained in the pumped primary treated water were examined and listed in Table 2.

Comparative Example 2

Collecting the river water of the river in which the collection wells of Example and Comparative Example 1 were embedded, and inspected the pollutants contained in the river water are listed in Table 2.

TABLE 2

division Example Comparative Example 1 Comparative Example 2 Water intake per hour (ℓ / h) 1856.4 1746.5 - pH 7.0 6.9 7.1 BOD (mg / L) - 0.1 0.9 SS (mg / L) - 0.3 5.5 DO (mg / L) 7.7 7.6 8.0 Ammonia nitrogen (mg / L) - - 0.075 Cationic Heavy Metal Contaminants (mg / L) ¹⁾ Copper - - 0.5 zinc - - - lead - - 0.06 cadmium - - - Phosphorus (mg / L) - 0.03 0.24

Cationic contaminants: copper, zinc, lead and cadmium

The present invention can be easily solved even if the reaction wall containing the reactant is applied to the riverside or river bed filtration method, the construction is easy, and the reactant used in the purification treatment reaches the fatigue point and the purification ability is also reduced. Provided is a cylindrical reaction wall for the collecting pipe or the sump.

In addition, the present invention, in the riverbank or riverbed filtration method, the collection pipe or the sump not only collects the primary treated water treated through the riverbank and the alluvial aquifer, but also purifies the primary treated water secondarily. It provides a collecting pipe or a cylindrical reaction wall for the collecting well to be able to construct a collecting pipe or a collecting well so as to have a function of collecting during processing.

In addition, the present invention can be immediately purified while collecting water into the collection pipe or the sump while maintaining the flow of the treated water through the alluvial aquifer in the riverside and riverbeds, so a separate post-treatment is required when applying the riverside or riverbed filtration method. Provided is a cylindrical reaction wall for a sump tube or a sump, which can be installed without a sump tube or a sump.

In another aspect, the present invention provides a river water purification treatment method that can clean the river water with a higher efficiency than by the conventional riverside or river bed filtration method by configuring the collecting pipe or the water collection well with the cylindrical reaction wall.

The present invention also provides a method for easily purifying a stream or other contaminated stream to which the filtration method is applied by using the purified river water obtained by applying the cylindrical reaction wall of the present invention to a riverside or river bed filtration method.

Claims (5)

Two or more different reactants are each made of a cylindrical reactant having a different diameter, and each cylindrical reactant is in the order of the smallest to largest in diameter and the inner circumferential surface of the smaller diameter reactant A water collecting pipe or a water collecting well cylindrical reaction wall for use in a riverside filtration method or a riverbed filtration method, characterized in that it is configured in a contiguous manner and formed as a single cylindrical shape as a whole. The method according to claim 1, wherein the water-permeable cylindrical caisson formed with a permeable or slit formed between the cylindrical reactants, the outermost cylindrical reactant and the innermost cylindrical reactant. Cylindrical reaction walls for collection pipes or sump wells for use. After installing the cylindrical reaction wall of claim 1 or 2 radially buried in the riverbed, and connected to the sump installed continuously along the riverside, the primary filtered water filtered from the bed alluvial aquifer to the cylindrical reaction wall Purification treatment method of river water, characterized in that the secondary filtration. Claim 1 or claim 2 of the cylindrical reaction wall is continuously poured vertically to the bottom along the river side of the river to produce a water collecting well, and then the primary filtrate filtered from the riverside alluvial aquifer to the secondary filter to the cylindrical reaction wall Purification treatment method of river water, characterized in that. A method of improving the water quality of the stream by discharging the secondary treated water collected by using the cylindrical reaction wall of claim 1 or 2 as a water collecting well or a collecting pipe in a riverside or river bed filtration method.