KR101627642B1 - Highly water treatment system - Google Patents

Abstract

The present invention relates to an advanced water treatment apparatus which has a high efficiency of nutrient salts treatment in a small size, thereby making better use of a space and providing excellent functionality. The advanced water treatment apparatus of the present invention comprises: an undercurrent anaerobic tank (200) which forms a wastewater inflow pipe (201) on one side thereof and performs a solid-liquid separation of the wastewater; a creature reaction tank (300) which aerates and stirs the wastewater filtered by and flowing in from a filter screen (310), and decomposes and processes with microorganisms; a membrane separation tank (400) which finally discharges treated water through a solid-liquid separation using a membrane; and a concentrated undercurrent tank (500) which concentrates returned sludge. According to the present invention, the apparatus effectively removes nitrogen and phosphorus which are the main culprit of eutrophication and red tide, as well as organisms and pathogenic microorganisms, thereby having an excellent wastewater treatment efficiency. In addition, the apparatus has no separated storage tank such that the size of the apparatus can be small, thereby having making better use of a space and providing excellent functionality as an advanced water treatment apparatus which is installed in a small space.

Description

{Highly water treatment system}

TECHNICAL FIELD The present invention relates to an advanced water treatment apparatus, and more particularly, to an advanced water treatment apparatus which has a high treatment efficiency of nutrients and is small in size, thereby exhibiting excellent space availability and functionality.

The Korean shipbuilding marine industry is taking the position of leading shipbuilding marine industry leader in Korea by taking advantage of the latest large facilities, technical manpower, design technology and construction experience as a driving force of national economic development.

In addition, marine leisure, shipbuilding, equipment and cruise markets are increasing rapidly as the demand for marine tourism and leisure industry increases due to economic development, average income and leisure time.

In line with the rise of ship industry, strengthening of international marine environmental protection regulations such as strengthening stability of hull structure and emission regulation of marine pollutants, environment related technology such as double structure of hull structure, development of non-toxic paint, exhaust gas abatement technology and ballast water treatment technology R & D on Hwaseong technology is actively under way.

In addition, strict quality control standards are applied to the products of the shipbuilding industry through safety operations and international agreements. In particular, the quality standards of life safety equipment through international laws and the International Maritime Organization (IMO) ) Of the International Convention for the Safety of Life at Sea (SOLAS), and the International Convention for the Prevention of Marine Pollution (MAPOL).

In particular, as the quality of life around the world has improved, ships have become more sophisticated and the number of travelers has increased due to the increase in the number of passengers. As a result, the need for prevention and control of marine pollution in wastewater has been increasingly recognized by the International Maritime Organization (IMO) And the Marine Environment Protection Committee (MEPC).

Thus, the International Maritime Organization has entered into force on September 27, 2003, for the management and treatment of wastewater from ships, and entered into force in 2004.

Wastewater designated by the International Maritime Organization may be discharged from the washrooms or urinals, water from the sinks or drains of medical places such as clinics, hospitals and wards, water generated from living animals, dishwashers, do.

Therefore, it is mandatory to install a septic tank inside the ship in case of ships with more than a certain number of ships. In 2030, the International Maritime Organization will implement a management guideline that exceeds the performance of conventional septic tanks, It is necessary to install a septic tank having the capability.

Nevertheless, the conventional septic tank is generally used after being partially miniaturized by improving the type of septic tank used on the land.

That is, as shown in FIG. 4, the conventional marine purification tank is provided with a grinding mechanism (50) in the primary treatment tank (20) for grinding and grinding the first incoming wastewater in a purification tank composed of three treatment tanks After the air bubbles are blown in the second treatment tank 30, a precipitation is induced. Finally, a chlorine-based disinfectant is injected into the third treatment tank 40 to be sterilized and discharged to the ocean. .

However, in the case of ships, due to the limited spatial characteristics of the ship and the functional characteristics of navigating the sea, limitations on the size of the septic tank are inevitable, and only the general type of septic tank used for land use is partially improved to make the conventional septic tank In the case of the facility, when the number of boarding passengers increases, the sewage is not smoothly processed due to the capacity exceeding the capacity of the septic tank or the performance.

In addition, it is difficult to manage a mixed liquor suspended solid (MLSS), and a chlorine-based disinfectant is added to the conventional septic tank.

In addition, according to the International Maritime Organization's Management Guidelines for Sewer Sewage Purification System implemented from 2030, there is no residual chlorine residue in the effluent water, and the treatment standard that can remove phosphorus and nitrogen It is inevitable to install an advanced water treatment system that can meet these standards for all ships in order to prevent not only movement of ships but also environmental pollution.

In order to solve the above-mentioned conventional problems, various techniques for treating wastewater for ships have been proposed in the past. Representative prior arts related to wastewater treatment for ships are as follows.

Japanese Patent Application Laid-Open No. 10-1118212 discloses a first treatment tank in which the incoming water flows through a crusher; A secondary treatment tank communicating with the primary treatment tank and aeration treatment of the primary treatment water treated in the primary treatment tank; And a tertiary treatment tank which is provided in communication with the secondary treatment tank and in which a sterilizing agent injection unit is formed to sterilize secondary treatment water aeration treated in the secondary treatment tank; Wherein the inlet pipe of the incoming water and the primary treated water inflow pipe of the primary treatment tank are connected to the crusher, and the secondary treatment tank is provided with a "g" shaped diaphragm A mesh filter is provided at a communicating portion with the tertiary treatment tank so as to prevent the solid matter of the secondary treatment tank from being discharged, and the secondary treatment tank is provided with a discharge pipe for discharging the treated water from the upper side downward The third treatment tank is provided with an inlet pipe through which the treated water flows upward from the lower side to the upper side. The outlet pipe and the inlet pipe communicate with each other at the lower portion, and the mesh filter is provided at the upper end of the outlet pipe And a septic tank for a ship.

In addition, in JP-A 2002-0078005, there is disclosed a first settling tank 21, a flow rate adjusting tank 22, a first aeration tank 23, a second settling tank 24, a second aeration tank 25, a third settling tank 26 ), And the like, comprising: an air diffuser (27) having one end extended to the bottom surface of the first settling tank (21) and the first aeration tank (23), and an external pneumatic pressure generating means and the other end communicating with each other; And a filter medium (28) installed at an intermediate portion on the flow rate adjusting tank (22) and the third settling tank (26) and performing a biological decomposition / adsorption / filtration function. .

Patent Registration No. 10-1118212 (Mar. 07, 2012) Open Utility Model Publication No. 20-2012-0003629 (Apr. 25, 1042) Open Patent Publication No. 2002-0078005 (Oct. 18, 2002)

Since the conventional art as described above does not have an anaerobic tank and does not emit phosphorus, only general organic matter can be removed, so that nitrogen and phosphorus, which are the main causes of eutrophication and red tide, are not removed, and a non-chlorine-based disinfectant , It is easy to manage residual chlorine in the effluent water while it is necessary to continuously use the non-chlorine-based disinfectant, so that there is a problem that installation and maintenance are costly.

Further, in the prior art, when the inflow amount of the treated water suddenly increases, the wastewater treatment performance does not correspond to the inflow amount of the treated wastewater, and thus the wastewater treatment performance is degraded. There is a problem that it is not easy to enlarge the capacity due to the characteristics of the wastewater treatment device having a lot of space depending on a installation space.

In addition, in the prior art, in order to install a wastewater treatment apparatus such as a ship having a narrow installation space or a mountainous region, an island and a book area where it is difficult to connect a sewer pipe for sewage treatment due to the need for a storage tank for storing wastewater, , There is a problem that it is difficult to use in a place where space restriction is large.

Therefore, it is urgently required to develop an advanced water treatment apparatus having a small space for easy installation of ships, mountains, islands, and islands, and having a high space efficiency and high sewage treatment efficiency.

The high-altitude water treatment apparatus of the present invention has been developed in order to overcome the above-mentioned problems of the prior art. The high-altitude water treatment apparatus of the present invention comprises a main body 100 as a unitary chamber divided into a plurality of partitions and formed on one side of an outer wall 101 of the main body 100 A storage anaerobic tank 200 for decomposing anaerobically the effluent from the sewage water inlet 201 through solid-liquid separation and storage while equalizing the concentration and flow rate of the treated water,

A biological reaction tank 300 for decomposing the treated water flowing through the storage anaerobic tank 200 into a microorganism by aeration and agitation,

A membrane separation tank 400 for ultimately discharging the treated water supplied from the bioreactor 300 by solid-liquid separation using the hollow fiber membrane 401,

And a concentrated storage tank (500) for concentrating the sludge conveyed in the membrane separation tank (400)

A filtration screen 310 for filtering the treated water in the biological reaction tank 300 and supplying the filtered water to the membrane separation tank 400 is provided in the second partition wall 103 partitioning the biological reaction tank 300 and the membrane separation tank 400 In addition,

The membrane separation vessel 400 is partitioned into a third partition 104 having a perforation 104a and the hollow fiber membrane 401 is installed between the third partition 104 and the outer wall 101 of the main body 100 ,

A circulation pump 402 for forcibly circulating and stirring the two treated water partitioned by the third partition 104 into the outer wall 101 of the membrane separation tank 400 and a circulation pump 402 for conveying the sludge in the membrane separation tank 400 406, and 407, which are configured to provide a high efficiency of treatment of nutrients and small size, thereby achieving excellent space utilization and functionality.

As described above, the high-temperature water treatment apparatus of the present invention effectively removes nitrogen and phosphorus which are the main cause of eutrophication and red tide as well as organic matter and pathogenic microorganisms, and satisfies the residual chlorine standard, It is very small and the operation performance according to pollutant load is excellent.

In addition, since the bioreactor and the membrane separation tank react at the same time, a separate storage tank is not needed, so that it is possible to miniaturize the water tank. Therefore, it is possible to provide a water tank having a very narrow space for installation, , Islands, and islands.

In addition, not only does it exhibit a stable sewage treatment capacity even in long-time operation, but also has a merit that the possibility of malfunction is minimized through a simple structure, and the cost due to operation and maintenance can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of an embodiment of an advanced water treatment apparatus of the present invention. FIG.
2 is a side elevational view according to an embodiment of the high-altitude water treatment apparatus of the present invention.
3 is a perspective view showing a filtration screen according to an embodiment of the high-altitude water treatment apparatus of the present invention.
Fig. 4 is a side sectional view illustrating a conventional septic tank; Fig.
5 is a configuration diagram showing a conventional wastewater treatment apparatus.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the structure and operation of a high-altitude water treatment system according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The apparatus for high-altitude water treatment according to the present invention is characterized in that the main body 100, which is an integrated chamber, is divided into a plurality of partitions and the wastewater flowing through the wastewater inlet pipe 201 formed at one side of the outer wall 101 of the main body 100, (300) for decomposing the treated water flowing into the anaerobic tank (200) into a microorganism by aerating and agitating the treated water flowing through the anaerobic tank (200) A membrane separation tank 400 for finally discharging the treated water obtained by solid-liquid separation using the hollow fiber membrane 401 using the treated water supplied from the bioreactor 300; (500).

The reservoir anaerobic tank 200 and the bioreactor tank 300 are partitioned by a first partition wall 102 having an upper end and a lower end wall to allow the anaerobic tank 200 and the bioreactor 300 to function as a flow control tank, So that it is advantageous for miniaturization as an advanced water treatment apparatus.

When the sludge is conveyed from the bioreactor 300 to the anaerobic tank 200 through the first partition 102 having the upper and lower ends of the upper and lower edges of the sludge inlet pipe 201 formed on one side of the outer wall 101 of the main body 100, The amount of phosphorus emission increases as the microorganisms ingest and multiply the organic matter of the wastewater flowing through the wastewater.

A filtration screen 310 for filtering the treated water in the biological reaction tank 300 and supplying the filtered water to the membrane separation tank 400 is provided in the second partition wall 103 partitioning the biological reaction tank 300 and the membrane separation tank 400 Install it.

Therefore, when the inflow amount of the wastewater fed to the anaerobic tank 200 serving as the flow control tank together with the bioreactor 300 is small, a certain amount of wastewater is stored and the inflow amount of the wastewater increases, When the filtration screen 310 is completely immersed in the wastewater, the wastewater is filtered, and the treated water flowing into the filtration screen 310 is supplied to the membrane separation tank 400 to homogenize the wastewater concentration and keep the wastewater treatment amount constant It is possible.

The filtration screen 310 includes a filtrate outlet pipe 311 having one end rotatably disposed in a second partition wall 103 partitioning the bioreactor 300 and the membrane separation tank 400, A screen box 312 which is connected to the other end of the pipe 311 and allows the filtered process water to flow through the inlet portion 312a and to be supplied to the filtered water outlet pipe 311, And an inflow port 313 which is provided at the upper part of the main body 312a and which provides aeration for cleaning the screen net 314 and a treatment unit 313 which simultaneously encloses the inflow unit 312a and the wing organ 313, And a screen net 314 for filtrating the impurities of the water and solid-liquid separation, and then introducing the screen net 312 into the screen box 312.

The filtered water outflow pipe 311 is horizontally installed on the bottom surface of the biological reaction tank 300. The filtered water outflow pipe 311 is arranged at a right angle to the maintenance of the screen box 312, And one end thereof is rotatably installed in a second partition wall 103 partitioning the bioreactor 300 and the membrane separation tank 400. The other end is filtered through the screen net 314 and introduced A screen box 312 for supplying the treated water to the membrane separation tank 400 is integrally formed.

The filtrate outlet pipe 311 is rotated outside the main body 100 to perform maintenance of the screen box 312 and replacement of the screen net 314 outside the main body 100, A pulling means 311a capable of manually pulling up and rotating the filtered water outflow pipe 311 is provided at one side of the filtered water outflow pipe 311 so as to facilitate the rotation of the pipe 311, .

The screen box 312 is formed with an inlet 312a through which the filtered water filtered by the screen net 314 flows. The inlet 312a allows the filtered water to flow quickly, The inflow part 312a through which the filtration water is introduced so that the mesh 314 does not flow into the screen box 312 due to the inflow pressure of the filtration water has a porous structure in which a plurality of small- desirable.

The screen net 314 has a surface area sufficient to simultaneously enclose the inflow section 312a and the blowing section 313, effectively filtering various kinds of contaminants contained in the waste water, and exhibiting sufficient solid-liquid separation performance, Nylon fiber is used to show strength and durability.

If the size of the mesh hole of the screen net 314 is too large, the effect of filtration of sewage or the purification of sewage due to solid-liquid separation is deteriorated. If the mesh hole is too small, the exchange of air and water is not smooth. It is preferable to have a mesh standard.

The breather 313 may be connected to the first aeration pump 313a and the aeration line 313b, which are provided exclusively for the filtration screen 310.

When the filtration performance is deteriorated due to the adhesion of various kinds of impurities or sludge to the outside of the screen net 314 due to the long use of the filtration screen 310, It is possible to maintain the filtration performance of the screen net 314 for a long period of time by allowing the aeration tank 313 to aeration to shake off various kinds of contaminants or sludge attached to the outside of the screen net 314. [

The membrane separation vessel 400 is divided into a third partition 104 having a perforation 104a and a hollow fiber membrane 401 is provided between the third partition 104 and the outer wall 101 of the main body 100.

A circulation pump 402 is installed in the outer wall 101 of the membrane separation tank 400 to forcibly circulate and agitate the treated water in the two spaces partitioned by the third partition 104.

The treated water filtered and supplied by the filtration screen 310 in the bioreactor 300 flows into the space between the second partition 103 and the third partition 104 in the membrane separation tank 400, The circulation of the treated water is induced in the process of passing through the perforation 104a formed in the third partition 104 and into the space provided with the hollow fiber membrane 401, The treated water filtered by the hollow fiber membrane 401 flows into the space between the second bank 103 and the third bank 104 and then flows back into the space between the second bank 103 and the third bank 104. Then, By repeating the process of passing through the perforation 104a and entering the space where the hollow fiber membrane 401 is installed, the forced circulation and stirring of the treated water are performed, the sludge is effectively concentrated, and at the same time, The organic material was removed and ammonia nitrogen (NH4 +) Is maintained in an aerobic state to oxidize nitrate nitrogen (NO3) to remove organic matter and nitrogen.

An aeration line 408 is provided in the membrane separation tank 400 so that the sludge concentration in the membrane separation tank 400 and the oxidation of ammonia nitrogen (NH 4 +) into nitrate nitrogen (NO 3) .

The hollow fiber membrane 401 is an external pressure type (outer to inner filtration) module having a pore size of 0.1 to 1 μm and adopts a submerged filtration system and has a wide and thin plate shape for enhancing space utilization, It is easy to replace, and even when the turbid material is deposited in the solid-liquid separation process, the cleaning can be performed, and the efficiency is excellent.

In addition, it is preferable to provide a breather 313 below the hollow fiber membrane 401 so as to shake the membrane formed on the surface of the hollow fiber membrane 401.

A water level sensing means 403 such as a breeze is provided in the membrane separation tank 400. When the water level in the membrane separation tank 400 becomes a predetermined level or more, an opening / closing valve for opening / Thereby enabling automatic discharge of treated water.

A UV lamp 405 for disinfecting the final effluent water is disposed inside the treated water discharge pipe 404 so that the effluent water finally discharged through the treated water discharge pipe 404 is sterilized and disinfected using ultraviolet rays radiated from the UV lamp 405 The water quality of the final effluent water can be further improved.

The sludge concentrated in the membrane separation tank 400 between the third partition 104 and the outer wall 101 of the main body 100 flows through the second partition 103 of the bioreactor 300, And a conveying line 405, 406, 407 for conveying each of the conveying lines to a space between the third bank 104 and the concentrated storage tank 500. Preferably, each conveying line is provided with a valve for conveying control together with a pump Do.

The concentrated storage tank 500 is partitioned by a partition wall at one side of the interior of the reservoir anaerobic tank 200 and is connected to the outer wall 101 of the bioreactor 300, the membrane separation tank 400 and the concentrated storage tank 500 A sludge discharge line 600 for selectively discharging sludge concentrated and stored in each tank is connected.

Meanwhile, the control system for controlling the high-level water treatment apparatus of the present invention uses a PLC (Programmable Logic Controller) control device for automation. By using a PLC control device, Function, and various controls are possible only by changing the program through use of the program memory for storing the instruction. Therefore, by adding only numerical operations, various controls are possible.

The sewage treatment process using the advanced water treatment apparatus to which the present invention is applied will be described as follows.

The apparatus for high-altitude water treatment according to the present invention is constructed by partitioning the main body 100, which is an integral type chamber, into a plurality of partitions so as to be easily installed inside a vessel having a limited installation space, And then flows into the storage anaerobic tank 200 through the storage tank 201.

The wastewater flowing into the reservoir anaerobic tank (200) is firstly sedimented and stored in solid-liquid separation to equalize the concentration and flow rate of the treated water while the internal microorganisms ingest and propagate the organic matter of the wastewater.

The treated water in which the phosphorus is released from the anaerobic tank 200 is supplied to the bioreactor 300 and carbon dioxide gas, hydrogen sulfide, methane gas and the like are removed by the action of microorganisms through aeration and agitation.

The treated water from which the various gases are removed in the biological reaction tank 300 is filtered by the mesh type filtration screen 310 provided in the second partition wall 103 partitioning the biological reaction tank 300 and the membrane separation tank 400, Liquid separation through filtration of the particles, and the treated water is supplied to the membrane separation tank by the filtrate water outflow pipe 311 rotatably installed in the second partition wall 103.

As described above, phosphorus is released in the anaerobic tank 200, and the treated water filtered by the mesh-type filtration screen 310 in the bioreactor 300 flows into the membrane separation tank 400, 400 is divided into two spaces by a third partition 104 having a perforation 104a to provide a hollow fiber membrane 401 between the third partition 104 and the outer wall 101, The introduced wastewater first flows into the space between the second partition wall 103 and the third partition wall 104 and then flows into the space between the third partition wall 104 provided with the hollow fiber membrane 401 and the outer wall 101 The organic matter is removed by aeration and stirring, and the ammonia nitrogen is oxidized to nitrate to remove nitrogen and solid-liquid separation by the hollow fiber membrane 401.

The circulation pump 402 installed in the outer wall 101 of the membrane separation tank 400 is used to forcibly circulate the treated water in the divided two spaces in the membrane separation tank 400 partitioned by the third partition 104, The sludge is effectively concentrated and the aerobic state is maintained to remove the untreated organic substances from the bioreactor 300 and to oxidize ammonia nitrogen (NH4 +) to nitrate nitrogen (NO3), thereby removing organic matter and nitrogen The microbial loss does not occur in the process of nitrification and denitrification.

Particularly, since the solid-liquid separation is effectively performed by the hollow fiber membrane 401 of the membrane separation tank 400, the quality of the treated water is stable, and there is almost no influence on the change of the water temperature in the wastewater, colloid pollutants, microorganisms, , It is easy to mechanically operate and easy maintenance, and the cost of maintenance is reduced, the sludge generation amount is small, and the automatic operation is easy and the space required for the process is small, so that the sewage treatment apparatus can be miniaturized easily.

As described above, the treated water finally treated in the membrane separation tank 400 is detected by the water level sensing means 403 installed inside the membrane separation tank 400 when the water level in the membrane separation tank 400 reaches a certain level The process water inside the membrane separation tank 400 is discharged to the ocean through the process water discharge pipe 404 by automatically opening and closing the opening / closing valve for opening / closing the water discharge pipe 404.

At this time, ultimate effluent discharged to the ocean is disinfected with ultraviolet rays by using the UV lamp 405 installed in the treated water discharge pipe 404, thereby further improving the quality of the final treated water discharged to the ocean, It is possible to prevent marine pollution caused by water.

While the invention has been shown and described with reference to a certain preferred embodiment thereof, it is to be understood that the invention is not to be limited to the specific embodiment thereof, It will be understood by those skilled in the art that various modifications and applications may be possible, for example, for marine use, for land use, for special facilities, and the like. It should not be understood.

100: main body 101: outer wall
102: first partition 103: second partition
104: third bulkhead 200: reservoir anaerobic tank
201: Sewage input 300: Bioreactor
310: Filtration screen 311: Filtration water outlet tube
400: membrane separation tank 401: hollow fiber membrane
402: Circulation pump 403: Water level sensing means
404: Process water outlet pipe 405: UV lamp
500: Concentrated storage tank

Claims (3)

The main body 100 of the integrated chamber is divided into a plurality of partitions and the wastewater flowing through the wastewater inlet pipe 201 formed at one side of the outer wall 101 of the main body 100 is stored while being solid- A reservoir anaerobic tank 200 for decomposing anaerobic while equalizing the concentration and the flow rate,
A biological reaction tank 300 for decomposing the treated water flowing through the storage anaerobic tank 200 into a microorganism by aeration and agitation,
A membrane separation tank 400 for ultimately discharging the treated water supplied from the bioreactor 300 by solid-liquid separation using the hollow fiber membrane 401,
And a concentrated storage tank (500) for concentrating the sludge conveyed in the membrane separation tank (400)
A filtration screen 310 for filtering the treated water in the biological reaction tank 300 and supplying the filtered water to the membrane separation tank 400 is provided in the second partition wall 103 partitioning the biological reaction tank 300 and the membrane separation tank 400 In addition,
The membrane separation vessel 400 is partitioned into a third partition 104 having a perforation 104a and the hollow fiber membrane 401 is installed between the third partition 104 and the outer wall 101 of the main body 100 ,
A circulation pump 402 for forcibly circulating and stirring the two treated water partitioned by the third partition 104 into the outer wall 101 of the membrane separation tank 400 and a circulation pump 402 for conveying the sludge in the membrane separation tank 400 The transfer lines 405, 406, and 407 are provided,
The filtration screen 310 includes a filtered water outflow pipe 311 having one end rotatably installed in a second partition wall 103 partitioning the bioreactor 300 and the membrane separation tank 400;
A screen box 312 coupled to the other end of the filtered water outlet pipe 311 to allow the filtered process water to flow into the filtered water outlet pipe 311;
A wick 313 provided above the inflow portion 312a formed in the screen box 312 to provide aeration for cleaning the screen net 314;
A screen net 312 for enclosing the inflow portion 312a and the wastewater 313 at the same time to filter the contaminants of the treated water flowing into the bioreactor 300 and solid-liquid separation, 314). ≪ / RTI > delete delete

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