KR20100115091A - Sewage treatment apparatus for use in ship and control method thereof - Google Patents

Abstract

PURPOSE: A sewage treatment apparatus for a ship and a control method thereof are provided to filter both large and fine foreign materials and remove nitrogen and phosphorus which can pollute the seas. CONSTITUTION: A sewage treatment apparatus for a ship comprises a division unit(100), a filtering unit(200), a storage tank(300), a purification unit(400), and a cleaning unit(500). The division unit filters and precipitates sewage. The filtering unit is on one side of the division unit to filter sewage. The storage tank is on one side of the filtering unit. Sewage passing through the filtering unit passes through the storage tank. The purification unit is on one side of the storage tank. And the purification unit chemically purifies sewage.

Description

Sewage treatment apparatus for use in ship and control method

The present invention relates to a marine sewage treatment apparatus, and more particularly, to a marine sewage treatment apparatus capable of purifying sewage by various apparatuses and capable of filtering and cleaning itself by washing means for flowing back water. .

In general, the SBR process is a process in which waste water and wastewater flow in and out of treated water in a single reactor according to a predetermined time sequence.

In this case, the reaction proceeds in the order of a fill process, a reaction process, a settle process, a draw process, and an idle.

As described above, the conventional sewage treatment system is composed of a system that focuses on separating sediments at the bottom by causing long-term precipitation. Therefore, it is difficult to completely clean the sewage, there is a problem that takes a long time to settle.

In particular, a large amount of shipbuilding is made due to the boom in the shipbuilding industry, the sea sewage treatment apparatus does not properly clean the sewage, the sea is polluted, there is a problem in particular difficult to remove nitrogen or phosphorus.

An object of the present invention is to solve the problems of the prior art as described above, the purification of sewage is made by a number of devices, by the cleaning means for providing a marine sewage treatment apparatus that is regularly cleaned by the filtering means. will be.

Another object of the present invention is to provide a control method of a marine sewage treatment apparatus for treating sewage and washing by reverse flow of water.

Marine sewage treatment apparatus according to the present invention for achieving the object as described above, the first separation means for filtering and settling the dirt; Filtering means provided on one side of the separation means, for filtering the secondary secondary; A storage tank provided on one side of the filtering means and configured to pass sewage through the filtering means; Purification means provided on one side of the storage tank, for chemically purifying and disinfecting the sewage flowing through the storage tank; It characterized in that it comprises a; comprising a; washing means for the back of the water stored in the storage tank to the filtering means to remove and clean the foreign matter attached to the filtering means.

The control method of the marine sewage treatment apparatus according to the present invention,

A dirt inflow step of introducing dirt; A separation step of filtering out foreign substances in the dirt introduced into the reactor by the screen primarily; A level control step of measuring the amount of dirt introduced by the dirt inflow step, and blocking the inflow of dirt into the reaction tank when the level of the set reaction tank is satisfied; A purifying step of purifying the sewage introduced into the reaction by the sediment inflow step by precipitation and reaction for a predetermined time; A stirring step of mixing the sewage inside the reactor evenly during the purification step; After the purification step is performed, the waste discharge step of discharging the waste accumulated in the lower end of the reactor to the outside; A sewage discharge step which is performed after the waste discharge step is completed and allows the sewage in the reactor to flow into the filtering means; A filtering step of filtering foreign matter by the filtering means from the sewage introduced into the filtering means by the wastewater discharge step; A disinfection step of chemically sterilizing / disinfecting and purifying by adding a chemical substance to the wastewater which has passed the filtering step; After the waste water stored in the reaction tank is discharged, the backwashing step of separating and discharge the foreign matter attached to the filtering means by flowing back the water stored in the storage tank.

According to the marine sewage treatment apparatus and control method of the present invention as described above, there is an advantage that the sewage and wastewater treatment of the vessel is completed. That is, the foreign matter in the sewage is mechanically and chemically purified by the separating means and the purifying means. Therefore, foreign matters of fine size as well as foreign matters of large size are filtered out, and all substances such as nitrogen and phosphorus, which can chemically pollute the sea by microorganisms and chlorine, are removed.

In addition, since the filter of the filtering means is automatically washed by the washing means, the user does not need to wash the filter or the like one by one. Thus, according to the present invention, there is an advantage that the purification of the waste water generated in the vessel can be effectively.

Hereinafter, a configuration of a marine sewage treatment apparatus according to the present invention will be described with reference to the accompanying drawings.

1 schematically shows a configuration of a marine sewage treatment apparatus according to the present invention.

As shown in this, the marine sewage treatment apparatus according to the present invention, the separation means 100 for filtering and sedimenting the primary sediment, and is provided on one side of the separation means 100 to filter the sewage secondary A storage tank 300, which is provided on one side of the filtering means 200 and the filtering means 200, and is provided on one side of the storage tank 300, and the storage tank 300 for passing through the filthy water passing through the filtering means 200, Purification means 400 for chemically purifying and disinfecting the sewage flowing through the tank 300 and the water stored in the storage tank 300 back to the filtering means 200 to the filtering means 200. It consists of a washing means 500 for cleaning by removing the foreign matter attached.

In more detail, the waste tank 600 and other waste collection tank 610 in the vessel is connected to the separating means 100 by the waste pipe 620 and the waste pipe 620 to supply the waste water. Inlet pump 630 is provided. Therefore, according to the operation of the inlet pump 630, the filthy water mixed with the foreign matter is supplied to the upper side of the separation means 100 through the filth pipe 620.

The separating means 100, the reaction tank 110 is provided with a funnel-shaped hopper at the bottom, the foreign matter is installed in the upper end of the reaction tank 110, the large foreign matter in the waste water flowing from the toilet or waste storage tank The filtering screen 120, the stirring means 130 is installed in the center of the reaction tank 110 to mix the sewage in the reaction tank 110, and provided in the lower half of the reaction tank 110, the reaction tank 110 Air supply means 140 for supplying oxygen (air) to the inside, water level sensors 150 and 152 for measuring the water level inside the reaction tank 110, and the reaction tank 110 is provided outside the reaction tank 110 Water level display means 160 for recognizing the internal water level from the outside, and the media 170 and the like to be attached to the inner lower end of the reaction tank 110 to inhabit the inside of the reaction tank 110, etc. It is composed.

The reactor 110 is made of a cylindrical or square cylinder shape, the upper surface is provided with a cover 112 that can be opened and closed by the user.

The dirt screen 120 has a mesh shape to play a role of filtering relatively large foreign matter, and is installed in the reactor 110 so as to slide in and out from the side. That is, it is made of a drawer type, it is installed to be mounted and detached by the pull or push operation in the front or side.

The stirring means 130, the stirring blade 132 is located in the center or lower half of the reaction tank 110, the stirring shaft 134 is installed vertically long in the central portion of the reaction tank 110 and the It is made of a stirring motor 136 and the like connected to the top of the stirring shaft 134 to provide rotational power.

The stirring blade 132 is composed of a plurality of wings, such as a propeller, is fixed to the lower end of the stirring shaft 134, it is rotated in accordance with the rotation of the stirring motor 136.

The air supply unit 140 is provided outside the reaction tank 110, the air pump 142 for compressing and supplying air, and the air nozzle 144 is provided at the lower end of the inside of the reaction tank 110 to inject air ), And an air pipe 146 connecting the air pump 142 and the air nozzle 144.

The water level sensor (150,152) is to measure the level of sewage introduced into the reaction tank 110, the upper sensor 150 is installed on the upper end of the reaction tank 110, and installed in the lower end of the reaction tank (110) The lower sensor 152 is made of. Information about the water level of the sewage detected by the upper sensor 150 and the lower sensor 152 is transmitted to a control unit (not shown) and used for the control of the entire apparatus.

The water level display means 160 is installed to be exposed to the outside of the reaction tank 110, and is formed long up and down to communicate with the inside of the reaction tank 110, the water level display means 160 is made of a transparent material. Therefore, the sewage water level in the reaction tank 110 and the sewage water level of the water level display means 160 are the same, so that the water level in the reaction tank 110 can be visually immediately recognized from the outside.

The media 170 is generally a medium that is introduced into the aeration tank of the wastewater treatment device to serve to attach and survive the microorganisms. Therefore, the microorganism attached to the media 170 serves to reduce the biological oxygen demand (BOD), that is, the biological oxygen demand by decomposing organic matter contained in the wastewater and wastewater.

One side (the upper side in Figure 1) of the reaction tank 110 is provided with a drug supply means 180. The drug supply means 180, the pharmaceutical tank 182 to store the microorganisms such as chemicals or strains (Bacillus sp.) Or nutrients for the microorganisms, and the contents inside the pharmaceutical tank 182 A chemical pipe 184 for guiding the reaction tank 110 into the reactor 110 and a chemical pump 186 for forcing the contents of the chemical tank 182 to flow into the reactor 110 through the chemical pipe 184. ) And the like.

In addition, the reactor 110 may be further provided with a temperature control means. The temperature control means, as well as measuring the temperature inside the reaction tank 110, serves to maintain a proper temperature through the control unit. That is, the microorganisms such as Bacillus sp. To maintain a good temperature to inhabit. Therefore, a heater (not shown) or the like may be further installed in the reactor 110 to increase the temperature of the sewage.

The lower end of the reactor 110 has a hopper (funnel) shape that gradually decreases in cross-sectional area toward the lower side. And, the discharge pipe 114 is connected to the lower end of the reaction tank 110 to guide the discharge of sewage, the discharge pipe 114 is connected to the drain pipe 640 for guiding the sewage to the outside, the discharge pipe 114 A discharge valve 114 ′ that opens and closes the discharge pipe 114 is provided.

The drain pipe 640 is provided with a sludge pump 642 for forcing the external discharge of dirt (sewage), when the sludge pump 642 is operated and the discharge valve 114 'is opened the reaction tank 110 Internal dirt is discharged to the outside.

The filtering means 200 is installed outside the reactor 110, and the filtering means 200 is provided with a filter (not shown). Therefore, when the sewage passes through the filter inside the filtering means 200, foreign matter in the sewage is filtered out by the filter.

The transfer pipe 210 is connected between the reactor 110 and the filtering means 200 to guide the sewage. The transfer pipe 210 is provided with a return pump 212, forcing the sewage of the reaction tank 110 to move to the filtering means 200, the transfer pipe 210 to the opening and closing the transfer pipe 210 The transfer valve 214 is further provided.

In addition, the lower end of the filtering means 200 is connected to the drain pipe 640 is configured to discharge the waste water to the outside, the washing discharge pipe 540 is further installed. The washing discharge pipe 540 is a pipe that guides the water (wash water) flowing into the filtering means 200 through the washing pipe 510 to be described below to be discharged to the outside of the filtering means 200. The washing discharge pipe 540 is provided with a backwash valve 530 for opening and closing of the washing discharge pipe 540.

The storage tank 300 is provided on one side of the filtering means 200, it is configured to enable the movement of water (sewage) between each other by the storage tube 310 and the washing tube 510. That is, the storage pipe 310 is a pipe for guiding the water purified by the filtering means 200 to move to the storage tank 300, and the transfer pipe for opening and closing the storage pipe 310. The valve 214 is further provided.

The washing tube 510 is a tube for guiding the water in the storage tank 300 to be moved (backflow) to the filtering means 200. The washing tube 510 includes a backwash pump 520 and a backwash valve ( 530 is installed. The backwash pump 520 serves to force the water (wash water) in the storage tank 300 to move (backflow) to the filtering means 200, and the backwash valve 530 is the cleaning pipe 510. Open and close) as needed.

The washing tube 510, the backwash pump 520, the washing discharge tube 540, and the like are components constituting the washing means 500.

The purification means 400 is installed spaced apart from the storage tank 300, the purification pipe 410 is connected between the purification means 400 and the storage tank 300 to guide the movement of sewage (water). do.

On the other hand, the purifying means 400 is connected to the disinfection tank 420 is stored chemical. A disinfection tube 422 is connected between the disinfection tank 420 and the purifying means 400 to guide the chemicals (drugs) inside the disinfection tank 420 to be supplied to the purifying means 400. In addition, the disinfection pipe 422 is provided with a disinfection pump 424 forcing the material inside the disinfection tank 420 to be supplied to the purifying means 400.

Hereinafter, the control method of the marine sewage treatment apparatus will be described.

Figure 2 is a block diagram schematically showing a control method of the marine sewage treatment apparatus according to the present invention having the configuration as described above.

As shown in the drawing, in the control method according to the present invention, the dirt inflow step (S800) in which the dirt is introduced, and the foreign matter in the dirt introduced into the reaction tank 110, the first screen by the dirt screen 120. When the level of the reaction tank 110 is satisfied by measuring the amount of dirt introduced by the separation step (S810) and the dirt inflow step (S800), the water level control to block the inflow of dirt into the reaction tank 110 Step (S820), the purification step (S830) and the purification step (S830) of purifying the sewage introduced into the reaction tank 110 by the sedimentation step (S800) by the precipitation and reaction for a set time, and the purification step (S830) While the stirring step (S840) and the purification step (S830) to be evenly mixed in the reaction tank 110 while being discharged to discharge the waste accumulated in the lower end of the inside of the reactor 110 to the outside Sewage discharge step (S850), and After the water discharge step (S850) is completed is completed, the waste water discharge step (S860) and the waste water discharge step (S860) to allow the sewage in the reaction tank 110 to be introduced into the filtering means (200). Filtering step (S870) for filtering foreign matter by the filtering means 200 to filter the sewage introduced into the (200), and the chemical sterilization / disinfection to purify by adding chemicals to the wastewater passed through the filtering step (S870) After the step S880 and the sewage stored in the reaction tank 110 are discharged, the backwashing step of separating and discharging the foreign matter attached to the filtering means 200 by refluxing the water stored in the storage tank 300 (S890). ) And so on.

The dirt inflow step (S800) is a step that is performed first, a process in which dirt is introduced into the reactor 110. At this time, the sewage stored in the toilet bowl 600 or the waste tank 610 is forcibly introduced through the upper side of the reaction tank 110 by the operation of the inlet pump 630.

Of course, at this time, the microorganism is cultured in the reaction tank 110. That is, in the reaction tank 110, since the treatment of wastewater using a continuous batch process (SBR) is made, microorganisms such as Bacillus strains are cultivated for the reaction. In addition, such a reaction tank 110 may be injected with a microbial active agent including various inorganic materials such as silicon (Si), calcium (Ca), magnesium (Mg) and the like to promote germination and division of microorganisms.

The large foreign matter in the filthy water introduced into the reactor 110 is filtered by the dirt screen 120. That is, since the dirt screen 120 is formed in a mesh shape, foreign materials having a relatively large size are filtered out because they do not pass through the dirt screen 120. This process is the separation step (S810).

Sewage introduced into the reactor 110 is introduced until the water level reaches the upper sensor 150 (water level control step S820). When sewage flows into the reaction tank 110, the stirring means 130 is operated, and the mixing of the sewage is made by the stirring means 130. [Stirring step (S840)]

The stirring means 130 is operated at a low speed. That is, it is controlled to rotate at a speed of about 50 ~ 70rpm.

On the other hand, the temperature of the reaction tank 110 by the temperature control means is to maintain a temperature at which microorganisms such as Bacillus strains to act. For example, the temperature of the reactor 110 is controlled to maintain a constant 25 ± 0.5 ℃.

The purification step (S830) is a step of purifying the sewage by precipitation and reaction, it is a biological treatment process of wastewater using a continuous batch process (SBR).

The purification step (S830), the air supply process (S832) for supplying air (oxygen) into the reaction tank 110 for a predetermined time, and the precipitation process (S834) and the like to settle the foreign matter for a predetermined time.

The air supply process (S832) is performed after the water is supplied to the upper sensor 150 in the reaction tank 110, the precipitation process (S834) is performed after the air supply process (S832) is performed do. The air supply process (S832) is made by the air supply means 140.

The precipitation process S834 is a precipitation stop time performed after the air supply process S832 is performed by the air supply means 140 for a predetermined time, and proceeds for a predetermined time. The precipitation process (S834) is more preferably performed for about 6 hours.

The waste discharge step (S850) is a step of discharging the waste accumulated in the lower end of the reaction tank 110, the discharge valve 114 'is opened at the same time the sludge pump 642 is operated, the reaction tank 110 The sediment deposited therein is discharged to a separate sludge tank (not shown) through the discharge pipe 114 and the drain pipe 640.

In the waste discharge step (S850) or the sewage discharge step (S860) as described above, microorganisms such as Bacillus strains living in the reaction tank 110 is attached to the media (170) is discharged to the outside of the reaction tank (110). Is prevented.

After the sediment precipitated inside the reaction tank 110 by the waste discharge step (S850) is discharged, the sewage in the reaction tank 110 is introduced into the filtering means 200, and this step is the waste water discharge step. (S860).

At this time, the transfer valve 214 is opened, and the sewage is introduced into the filtering means 200 through the transfer pipe 210 as the return pump 212 operates. The sewage discharge step (S860) is stopped when the water level in the reaction tank 110 is lowered to the lower sensor 152 level.

Sewage flowing into the filtering means 200 passes through an internal filter, and foreign substances are filtered out in this process. As described above, the filtering step S870 is a filtration process for filtering foreign matter in the sewage using a membrane (filter).

In this case, since the transfer valve 214 of the storage pipe 310 is also open, the relatively clean waste water is introduced into the storage tank 300 via the filtering means 200.

Sewage flowing into the storage tank 300 is moved to the purification means 400 along the purification pipe 410 when the inside of the storage tank 300 is filled. In the purifying means 400, the disinfection step (S880) is performed. That is, the chemicals in the disinfection tank 420 are introduced into the purifying means 400 through the disinfection tube 422 by the disinfection pump 424, and sterilization and disinfection are performed.

Then, the sewage inside the purifying means 400 is chemically purified by the chemical introduced into the purifying means 400 and then flows to the outside.

The disinfection tank 420 is mainly filled with chlorine (Cl), the chlorine (Cl) is introduced into the predetermined means 400 to remove nitrogen and phosphorus in the sewage, and to sterilize and disinfect.

Meanwhile, sterilization / disinfection by light may be performed in the storage tank 300 or the purifying means 400 as described above.

If the above process is made continuously, foreign matter is attached to the filter inside the filtering means 200, if the attachment of such foreign matter continues, it is difficult to move the water through the filter. Therefore, since it becomes difficult to filter the foreign matter, the backwashing step (S890) is performed at this time.

The backwashing step (S890) is a process of separating and discharging the foreign matter attached to the filter inside the filtering means 200 by flowing the water stored in the storage tank 300 back to the filtering means 200.

The backwashing step S890 is performed by the washing means 500. That is, according to the operation of the backwash pump 520, the washing water (water) in the storage tank 300 moves to the filtering means 200 along the washing tube 510 to counter current inside the filtering means 200. do. Therefore, the foreign matter attached to the filter inside the filtering means 200 is separated, and is discharged along the washing discharge pipe 540 together with the washing water. Of course, at this time, the back washing valve 530 of the washing pipe 510 and the washing discharge pipe 540 should be open.

The backwashing step (S890) as described above is controlled to be performed by the user at random or automatically performed after a certain period of time.

After the backwashing step (S890) as described above is completed, the above-described dirt inflow step (S800) and the like proceeds in order to operate normally.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the above technical scope.

1 is a circuit diagram showing the configuration of a preferred embodiment of the marine sewage treatment apparatus according to the present invention.

Figure 2 is a block diagram showing a control method of the marine sewage treatment apparatus according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Separation means 200. Filtering means

300. Storage tanks 400. Purification means

500. Cleaning means S800. Sewage Inflow Stage

S810. Separation step S820. Water level control stage

S830. Purification step S840. Stirring Step

S850. Sewage discharge step S860. Sewage discharge stage

S870. Filtering step S880. Disinfection Step

S890. Backwash

Claims (5)

Separation means 100 for filtering and settling the dirt first; A filtering means (200) provided at one side of the separating means (100) to filter the dirt secondary; A storage tank 300 provided at one side of the filtering means 200 and configured to pass sewage through the filtering means 200; A purifying means (400) provided at one side of the storage tank (300) for chemically purifying and disinfecting the sewage flowing through the storage tank (300); It characterized in that it comprises a; comprising a; washing means (500) for flowing back the water stored in the storage tank 300 to the filtering means 200 to remove and clean the foreign matter attached to the filtering means 200; Marine sewage treatment device. The method of claim 1, wherein the separating means 100, A reaction tank 110 having a funnel-shaped hopper at the bottom; A dirt screen 120 installed at an inner upper end of the reaction tank 110 to filter foreign matter having a large size in the waste water flowing from the toilet or the waste storage tank; Agitation means (130) installed at the center of the reaction tank (110) for mixing sewage in the reaction tank (110); An air supply unit 140 provided at a lower half of the reactor 110 to supply oxygen (air) to the reactor 110; Water level sensors 150 and 152 for measuring the water level inside the reactor 110; Water level display means (160) which is provided on the outside of the reaction tank 110, so that the water level inside the reaction tank 110 can be recognized from the outside; It is provided on the inner lower end of the reactor 110, the media (170) to be attached to the bacteria inhabit the inside of the reactor 110; marine sewage treatment apparatus having a configuration comprising a. The method of claim 2, wherein the washing means 500, A washing tube 510 for connecting between the filtering means 200 and the storage tank 300; A backwash pump 520 installed in the washing tube 510 to force the water in the storage tank 300 to flow back to the filtering means 200; And a washing and discharging pipe (540) for guiding the water flowing back to the filtering means (200) to the outside. A dirt inflow step (S800) through which dirt is introduced; A separation step (S810) of first filtering foreign substances in the dirt introduced into the reaction tank 110 by the dirt screen 120; The water level control step (S820) to measure the amount of dirt introduced by the dirt inflow step (S800) to block the inflow of dirt into the reaction tank 110, if the level of the reaction tank 110 is satisfied. ; Purifying step (S830) for purifying the sewage introduced into the reaction tank 110 by the sewage inflow step (S800) by the precipitation and reaction for a set time; An agitation step (S840) to allow the sewage inside the reactor 110 to be evenly mixed during the purification step (S830); After the purification step (S830) is performed, the waste discharge step (S850) for discharging the waste accumulated in the lower end of the reaction tank 110 to the outside; A wastewater discharge step (S860) which is performed after the waste discharge step (S850) is completed and allows the wastewater inside the reactor 110 to flow into the filtering means 200; A filtering step (S870) of filtering foreign matters by the filtering means (200) from the sewage introduced into the filtering means (200) by the wastewater discharge step (S860); A disinfection step (S880) of purifying by chemically sterilizing / disinfecting by adding a chemical to the wastewater which has passed the filtering step (S870); After the wastewater stored in the reaction tank 110 is discharged, a backwashing step (S890) for separating and discharging the foreign matter attached to the filtering means 200 by refluxing the water stored in the storage tank 300; A control method of a marine sewage treatment device characterized in that. The method of claim 4, wherein the purifying step (S830), An air supply process (S832) performed after water is supplied to the upper sensor 150 in the reaction tank 110 to supply air (oxygen) to the reaction tank 110 for a predetermined time; After the air supply process (S832) is performed, the sedimentation process (S834) to allow the foreign matter to settle for a predetermined time period; control method for a marine sewage treatment apparatus comprising a.

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