WO2009123374A1 - Biochemical sewage treatment system for marine use - Google Patents

Biochemical sewage treatment system for marine use Download PDF

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Publication number
WO2009123374A1
WO2009123374A1 PCT/KR2008/001968 KR2008001968W WO2009123374A1 WO 2009123374 A1 WO2009123374 A1 WO 2009123374A1 KR 2008001968 W KR2008001968 W KR 2008001968W WO 2009123374 A1 WO2009123374 A1 WO 2009123374A1
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WO
WIPO (PCT)
Prior art keywords
tank
ship
air
sewage treatment
treating water
Prior art date
Application number
PCT/KR2008/001968
Other languages
French (fr)
Inventor
Seung Hwa Shin
Original Assignee
Il Seung Co., Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Il Seung Co., Ltd filed Critical Il Seung Co., Ltd
Publication of WO2009123374A1 publication Critical patent/WO2009123374A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63J—AUXILIARIES ON VESSELS
    • B63J4/00—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for
    • B63J4/006—Arrangements of installations for treating ballast water, waste water, sewage, sludge, or refuse, or for preventing environmental pollution not otherwise provided for for treating waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/24—Separation of coarse particles, e.g. by using sieves or screens
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the present invention relates to a sewage treatment apparatus for ship and more particularly, to a sewage treatment apparatus for ship in that the sewage is purified through four treatment processes, that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process, so as to discharge the purified sewage to an outside of the ship, whereby minimizing the generation of the waste matter and sewage in the ship.
  • four treatment processes that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process
  • an object of the present invention is to provide a sewage treatment apparatus for ship in that various sewages, which are generated from the ship, are purified through four treatment processes, that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process, whereby having a good treating ability, easily utilizing the space of the ship having various equipments, easily maintaining it by well adjusting to a load variation or a temperature variation of the sewage, and minimizing the generation of the sludge.
  • a sewage treatment apparatus for ship comprising: a biofilm reactor 10 having an inlet 11, a screen 12 for physically filtering a sewage flowed into the biofilm reactor 10, a plurality of uneven biofilter contactors 13 formed at a lower portion of the screen 12 and having various kinds of microbes thereon so as to resolve the sewage through contacts with the microbes, and an air diffuser 14 for supplying an air to an inside thereof formed at a lower portion of the biofilter contactors 13; a sedimentation tank 20 for dividing a first-stage treating water passing through the biofilm reactor 10 into a second-stage treating water and a sediment by precipitating floating matters and untreated matters of the first-stage treating water; a filtering tank 30 for filtering, absorbing, biologically resolving floating matters or untreated matters of a second- stage treating water passing through sedimentation tank 20 by means of filtering materials thereof; a sterilizing tank 40 for sterilizing a third-stage treating water passing through filtering
  • the sewage treatment apparatus for ship further comprises a sediment transfer pipe 21 for transferring the sediments of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10.
  • the sediments of the sedimentation tank 20 are moved to the biofilm reactor 10 by using an air lift pumping method for supplying the air to an inside of the sediment transfer pipe 21 through the air blower 50.
  • an air supply pipe 31 for supplying the air to an inside of the filtering tank 30 and connected to the air blower 50 is formed at the inside of the filtering tank 30 so as to promote the dissolving of floating matters and organic matters of the second-stage treating water.
  • the sterilizing tank 40 allows the air to be supplied to an inside thereof through the air blower 50, whereby promoting a mixture of the third-stage treating water and the disinfectant therein.
  • the sewage treatment apparatus for ship further comprises a water level detecting sensor 43 formed at an inside of the sterilizing tank 40 and a discharging pump 44 for discharging the fourth- stage treating water to an outside according to detected signals of the water level detecting sensor 43.
  • the structure thereof is compact and simple, so that it can easily utilize the space of the ship having various equipments, easily maintain it by well adjusting to the load variation or the temperature variation of the sewage, and minimize the generation of the sludge.
  • FIG. 1 is an exploded perspective view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 2 is a planar view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 3 is a front sectional view illustrating a sewage treatment apparatus for ship according to the present invention.
  • FIG. 4 is a right side sectional view illustrating a sewage treatment apparatus for ship according to the present invention.
  • FIG. 5 is a schematic sectional view illustrating a treatment process using a sewage treatment apparatus for ship according to the present invention. Best Mode for Carrying out the Invention
  • FIG. 1 is an exploded perspective view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 2 is a planar view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 3 is a front sectional view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 4 is a right side sectional view illustrating a sewage treatment apparatus for ship according to the present invention
  • FIG. 5 is a schematic sectional view illustrating a treatment process using a sewage treatment apparatus for ship according to the present invention.
  • the sewage treatment apparatus 100 for ship according to the present invention serves to purify the sewage through four treatment processes, that is, a microbe resolving process, a sedimentation process, a filtering process, and a sterilizing process. Accordingly, in order to perform each process, the sewage treatment apparatus 100 for ship according to the present invention includes a biofilm reactor 10, a sedimentation tank 20, a filtering tank 30, and a sterilizing tank 40.
  • the biofilm reactor 10 As shown in the drawings, the biofilm reactor 10, the sedimentation tank 20, the filtering tank 30, and the sterilizing tank 40 are in the form of a square respectively so as to use the space thereof and easily maintain it.
  • the present invention is not limited to any shape thereof.
  • the biofilm reactor 10 for initially treating the sewage through the microbe resolving manner includes an inlet 11 for flowing the sewage therein formed at an upper portion thereof, a screen 12 for physically filtering the sewage flowed into the biofilm reactor 10 formed at a lower portion of the inlet 11.
  • the biofilm reactor 10 further includes a plurality of uneven biofilter contactors
  • microbes various kinds of aerobic, voluntary and anaerobic bacteria
  • biofilter contactors 13 Since the biofilter contactors 13 has various kinds of the microbes in comparison with the activated sludge process, it can resolve much organic matters and cope with the unevenness of the sewage supply (excessive inflow or short inflow) well.
  • the biofilm reactor 10 further includes an air diffuser 14 for supplying an air to the inside thereof formed at a lower portion of the biofilter contactors 13 (a lower portion of the biofilm reactor 10), thereby supplying the air to the inside of the biofilm reactor 10 through the following air blower 50.
  • the biofilm reactor 10 further includes an air vent 15 for discharging a gas generated from the dissolution of the microbes to outside formed at the upper portion thereof and a manhole for cleaning the inside thereof. Since these structure of the air vent and the manhole are obvious in the art, further descriptions on these are omitted here.
  • the air diffuser 14 is in the form of a ball type so as to prevent the pipe from being clogged owing to external impurities and back currents of the air, thereby easily maintaining it.
  • a first-stage treating water which is treated through the microbe resolving process in the biofilm reactor 10, is flowed into the sedimentation tank 20.
  • the sedimentation tank 20 serves to divide the first-stage treating water into a first-class water (a second- stage treating water) and a sediment through a settlement for about 2 hours. That is, the floating matters and the untreated matters are collected into the lower portion of the sedimentation tank 20 as sediments and the second-stage treating water located at the upper portion of the sediment is flowed into the filtering tank 30 for performing a third-stage treating process.
  • the sediments accumulated on the lower portion of the sedimentation tank 20 can be moved to a sludge tank through a separate tank. However, it is preferred that the sediments are moved to the inlet 11 of the biofilm reactor 10 and then, re-dissolved through the microbes, thereby minimizing the sludge generated by the sewage treatment.
  • the sewage treatment apparatus 100 for ship further includes a sediment transfer pipe 21 for connecting the lower portion of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10.
  • a sediment transfer pipe 21 for connecting the lower portion of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10.
  • the sediments are moved to the biofilm reactor 10 by using an air lift pumping method for forcibly supplying the air to the inside of the sediment transfer pipe 21 through the air blower 50.
  • the second-stage treating water which is treated through the sedimentation tank 20, is flowed into the filtering tank 30 having filtering materials.
  • the filtering tank 30 serves to filter and absorb the floating matters or the untreated matters of the second- stage treating water through the filtering materials.
  • the kind of the filtering materials is an inexpensive activated carbon having a superior absorption.
  • the sewage treatment apparatus 100 for ship further includes an air supply pipe
  • the third-stage treating water in that the floating matters or the untreated matters are removed through the filtering tank 30, is flowed into the sterilizing tank 40 for sterilizing a harmful bacterium such as a colon bacillus and so on.
  • the sterilizing tank 40 for sterilizing the third-stage treating water through an injection and a mixing of a disinfectant therein includes a disinfectant tank 41 having the disinfectant formed at an outside thereof and a disinfectant pump 42 for supplying the disinfectant of the disinfectant tank 41 thereto.
  • the sterilizing tank 40 further includes a plurality of water level detecting sensors 43 for detecting a fixed water level of the fourth-stage treating water treated through the disinfectant tank 41 formed vertically therein and a discharging pump 44 for discharging the fourth-stage treating water to outside according to the detected signals of the water level detecting sensors 43, thereby easily managing the discharge of the treating water.
  • the air blower 50 is formed at the outside of the sewage treatment apparatus 100 for ship according to the present invention. Accordingly, as described above, the air blower 50 serves to supply the air to the air diffuser 14, forcibly supply the air to the inside of the sediment transfer pipe 21 by using the air lift pumping method, and supply the air to the sterilizing tank 40 so as to promote the mixture of the third- stage treating water and the disinfectant therein.
  • the present invention relates to a sewage treatment apparatus for ship in that various waste matters including the sewage generated from the ship such as a merchant ship, a fishing boat, or a passenger ship are resolved and then the resolved waste matters are discharged to the outside of the ship.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Ocean & Marine Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Toxicology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

Disclosed is a sewage treatment apparatus for ship in that the sewage is purified through four treatment processes, that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process, so as to discharge the purified sewage to an outside of the ship, whereby minimizing the generation of the waste matter and sewage in the ship. Accordingly, various sewages, which are generated from the ship, are purified through four treatment processes, whereby having a good treating ability, easily utilizing the space of the ship having various equipments, easily maintaining it by well adjusting to a load variation or a temperature variation of the sewage, and minimizing the generation of the sludge.

Description

Description
BIOCHEMICAL SEWAGE TREATMENT SYSTEM FOR
MARINE USE
Technical Field
[1] The present invention relates to a sewage treatment apparatus for ship and more particularly, to a sewage treatment apparatus for ship in that the sewage is purified through four treatment processes, that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process, so as to discharge the purified sewage to an outside of the ship, whereby minimizing the generation of the waste matter and sewage in the ship. Background Art
[2] Generally, in conventional sewage treatment methods, there are a storage method for storing and oxidizing the sewage in many tanks, a sewage treatment manner using a biological activity sludge capable of resolving the sewage flowed into a tank (a reactor 10) through a floating microbe, an electrolysis treatment manner and so on.
[3] In case of the storage method, since a mass storage tank for storing and oxidizing much sewages is required, there is a problem in that it has difficulty in treating a great quantity of sludge.
[4] In case of the sewage treatment manner using the biological activity sludge, since a fibrous microbe can be generated in the course of the treatment, a sludge bulking phenomenon can be generated. Also, it has difficulty in treating the sludge owing to an excessive sludge. Moreover, because a big reactor for perfectly treating the sewage is required, there is a problem in that it has difficulty in establishing it in the ship having various equipments.
[5] In case of the electrolysis treatment manner, crushed waste matters are resolved through an electricity while being passed through a narrow space between electrode plates. However, there are problems in that it has difficulty in crushing the waste matters, the structure thereof is apt to corrode quickly owing to a strong oxidation of HC103 generated during electrolysis, and a second pollution source can be generated owing to an excessive HC1O3 of the treatment water. Disclosure of Invention
Technical Problem
[6] It is, therefore, an object of the present invention is to provide a sewage treatment apparatus for ship in that various sewages, which are generated from the ship, are purified through four treatment processes, that is, a microbe resolving process, a sedimentation process, absorbing, filtering and biological resolving processes, and a sterilizing process, whereby having a good treating ability, easily utilizing the space of the ship having various equipments, easily maintaining it by well adjusting to a load variation or a temperature variation of the sewage, and minimizing the generation of the sludge. Technical Solution
[7] To achieve the above objects of the present invention, there is provided a sewage treatment apparatus for ship comprising: a biofilm reactor 10 having an inlet 11, a screen 12 for physically filtering a sewage flowed into the biofilm reactor 10, a plurality of uneven biofilter contactors 13 formed at a lower portion of the screen 12 and having various kinds of microbes thereon so as to resolve the sewage through contacts with the microbes, and an air diffuser 14 for supplying an air to an inside thereof formed at a lower portion of the biofilter contactors 13; a sedimentation tank 20 for dividing a first-stage treating water passing through the biofilm reactor 10 into a second-stage treating water and a sediment by precipitating floating matters and untreated matters of the first-stage treating water; a filtering tank 30 for filtering, absorbing, biologically resolving floating matters or untreated matters of a second- stage treating water passing through sedimentation tank 20 by means of filtering materials thereof; a sterilizing tank 40 for sterilizing a third-stage treating water passing through filtering tank 30 by means of an injection and a mixing of a disinfectant therein and comprising a disinfectant tank 41 having the disinfectant formed at an outside thereof and a disinfectant pump 42 for supplying the disinfectant of the disinfectant tank 41; an air blower 50 for supplying the air to the air diffuser 14; and a discharging pump 44 for discharging s fourth-stage treating water passing through the sterilizing tank 40 to an outside of the ship.
[8] Preferably, the sewage treatment apparatus for ship further comprises a sediment transfer pipe 21 for transferring the sediments of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10.
[9] Preferably, the sediments of the sedimentation tank 20 are moved to the biofilm reactor 10 by using an air lift pumping method for supplying the air to an inside of the sediment transfer pipe 21 through the air blower 50.
[10] Preferably, an air supply pipe 31 for supplying the air to an inside of the filtering tank 30 and connected to the air blower 50 is formed at the inside of the filtering tank 30 so as to promote the dissolving of floating matters and organic matters of the second-stage treating water.
[11] Preferably, the sterilizing tank 40 allows the air to be supplied to an inside thereof through the air blower 50, whereby promoting a mixture of the third-stage treating water and the disinfectant therein. [12] Preferably, the sewage treatment apparatus for ship further comprises a water level detecting sensor 43 formed at an inside of the sterilizing tank 40 and a discharging pump 44 for discharging the fourth- stage treating water to an outside according to detected signals of the water level detecting sensor 43.
Advantageous Effects
[13] As described above, according to the sewage treatment apparatus for ship, the structure thereof is compact and simple, so that it can easily utilize the space of the ship having various equipments, easily maintain it by well adjusting to the load variation or the temperature variation of the sewage, and minimize the generation of the sludge. Brief Description of Drawings
[14] The above as well as the other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
[15] FIG. 1 is an exploded perspective view illustrating a sewage treatment apparatus for ship according to the present invention;
[16] FIG. 2 is a planar view illustrating a sewage treatment apparatus for ship according to the present invention;
[17] FIG. 3 is a front sectional view illustrating a sewage treatment apparatus for ship according to the present invention;
[18] FIG. 4 is a right side sectional view illustrating a sewage treatment apparatus for ship according to the present invention; and
[19] FIG. 5 is a schematic sectional view illustrating a treatment process using a sewage treatment apparatus for ship according to the present invention. Best Mode for Carrying out the Invention
[20] A preferred embodiment of the invention will be described in detail below.
[21] FIG. 1 is an exploded perspective view illustrating a sewage treatment apparatus for ship according to the present invention, FIG. 2 is a planar view illustrating a sewage treatment apparatus for ship according to the present invention, FIG. 3 is a front sectional view illustrating a sewage treatment apparatus for ship according to the present invention, FIG. 4 is a right side sectional view illustrating a sewage treatment apparatus for ship according to the present invention, and FIG. 5 is a schematic sectional view illustrating a treatment process using a sewage treatment apparatus for ship according to the present invention.
[22] The sewage treatment apparatus 100 for ship according to the present invention serves to purify the sewage through four treatment processes, that is, a microbe resolving process, a sedimentation process, a filtering process, and a sterilizing process. Accordingly, in order to perform each process, the sewage treatment apparatus 100 for ship according to the present invention includes a biofilm reactor 10, a sedimentation tank 20, a filtering tank 30, and a sterilizing tank 40.
[23] As shown in the drawings, the biofilm reactor 10, the sedimentation tank 20, the filtering tank 30, and the sterilizing tank 40 are in the form of a square respectively so as to use the space thereof and easily maintain it. However, the present invention is not limited to any shape thereof.
[24] The biofilm reactor 10 for initially treating the sewage through the microbe resolving manner includes an inlet 11 for flowing the sewage therein formed at an upper portion thereof, a screen 12 for physically filtering the sewage flowed into the biofilm reactor 10 formed at a lower portion of the inlet 11.
[25] Also, the biofilm reactor 10 further includes a plurality of uneven biofilter contactors
13 formed at a lower portion of the screen 12 and having various kinds of microbes (various kinds of aerobic, voluntary and anaerobic bacteria) thereon so as to resolve the sewage through contacts with the microbes
[26] Since the biofilter contactors 13 has various kinds of the microbes in comparison with the activated sludge process, it can resolve much organic matters and cope with the unevenness of the sewage supply (excessive inflow or short inflow) well.
[27] Here, the biofilm reactor 10 further includes an air diffuser 14 for supplying an air to the inside thereof formed at a lower portion of the biofilter contactors 13 (a lower portion of the biofilm reactor 10), thereby supplying the air to the inside of the biofilm reactor 10 through the following air blower 50.
[28] Also, the biofilm reactor 10 further includes an air vent 15 for discharging a gas generated from the dissolution of the microbes to outside formed at the upper portion thereof and a manhole for cleaning the inside thereof. Since these structure of the air vent and the manhole are obvious in the art, further descriptions on these are omitted here.
[29] Here, it is preferred that the air diffuser 14 is in the form of a ball type so as to prevent the pipe from being clogged owing to external impurities and back currents of the air, thereby easily maintaining it.
[30] A first-stage treating water, which is treated through the microbe resolving process in the biofilm reactor 10, is flowed into the sedimentation tank 20. The sedimentation tank 20 serves to divide the first-stage treating water into a first-class water (a second- stage treating water) and a sediment through a settlement for about 2 hours. That is, the floating matters and the untreated matters are collected into the lower portion of the sedimentation tank 20 as sediments and the second-stage treating water located at the upper portion of the sediment is flowed into the filtering tank 30 for performing a third-stage treating process. [31] Here, the sediments accumulated on the lower portion of the sedimentation tank 20 can be moved to a sludge tank through a separate tank. However, it is preferred that the sediments are moved to the inlet 11 of the biofilm reactor 10 and then, re-dissolved through the microbes, thereby minimizing the sludge generated by the sewage treatment.
[32] Accordingly, the sewage treatment apparatus 100 for ship further includes a sediment transfer pipe 21 for connecting the lower portion of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10. Here, it is preferred that the sediments are moved to the biofilm reactor 10 by using an air lift pumping method for forcibly supplying the air to the inside of the sediment transfer pipe 21 through the air blower 50.
[33] By using the air lift pumping method, the establishment of the sediment transfer pipe
21 and the transfer of the sediment can be easily performed and the air for the microbe resolving process can be easily supplied.
[34] The second-stage treating water, which is treated through the sedimentation tank 20, is flowed into the filtering tank 30 having filtering materials. The filtering tank 30 serves to filter and absorb the floating matters or the untreated matters of the second- stage treating water through the filtering materials. Here, it is preferred that the kind of the filtering materials is an inexpensive activated carbon having a superior absorption.
[35] By using the activated carbon, a contaminant existed in the second-stage treating water can be perfectly removed and the value of a COD (chemical oxygen demand) can be deteriorated, thereby obtaining a good water.
[36] Also, the sewage treatment apparatus 100 for ship further includes an air supply pipe
31 for supplying the air to the inside of the filtering tank 30 formed at the lower portion of the inside of the filtering tank 30 and connected to the air blower 50 so as to promote the dissolving of the floating matters and the untreated matters, whereby deteriorating the value of the COD (chemical oxygen demand).
[37] The third-stage treating water, in that the floating matters or the untreated matters are removed through the filtering tank 30, is flowed into the sterilizing tank 40 for sterilizing a harmful bacterium such as a colon bacillus and so on.
[38] The sterilizing tank 40 for sterilizing the third-stage treating water through an injection and a mixing of a disinfectant therein includes a disinfectant tank 41 having the disinfectant formed at an outside thereof and a disinfectant pump 42 for supplying the disinfectant of the disinfectant tank 41 thereto.
[39] The sterilizing tank 40 further includes a plurality of water level detecting sensors 43 for detecting a fixed water level of the fourth-stage treating water treated through the disinfectant tank 41 formed vertically therein and a discharging pump 44 for discharging the fourth-stage treating water to outside according to the detected signals of the water level detecting sensors 43, thereby easily managing the discharge of the treating water.
[40] The air blower 50 is formed at the outside of the sewage treatment apparatus 100 for ship according to the present invention. Accordingly, as described above, the air blower 50 serves to supply the air to the air diffuser 14, forcibly supply the air to the inside of the sediment transfer pipe 21 by using the air lift pumping method, and supply the air to the sterilizing tank 40 so as to promote the mixture of the third- stage treating water and the disinfectant therein. Industrial Applicability
[41] The present invention relates to a sewage treatment apparatus for ship in that various waste matters including the sewage generated from the ship such as a merchant ship, a fishing boat, or a passenger ship are resolved and then the resolved waste matters are discharged to the outside of the ship.
[42] While this invention has been described in connection with what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments and the drawings, but, on the contrary, it is intended to cover various modifications and variations within the spirit and scope of the appended claims.

Claims

Claims
[1] A sewage treatment apparatus for ship comprising: a biofilm reactor 10 having an inlet 11, a screen 12 for physically filtering a sewage flowed into the biofilm reactor 10, a plurality of uneven biofilter contactors 13 formed at a lower portion of the screen 12 and having various kinds of microbes thereon so as to resolve the sewage through contacts with the microbes, and an air diffuser 14 for supplying an air to an inside thereof formed at a lower portion of the biofilter contactors 13; a sedimentation tank 20 for dividing a first-stage treating water passing through the biofilm reactor 10 into a second-stage treating water and a sediment by precipitating floating matters and untreated matters of the first-stage treating water; a filtering tank 30 for filtering, absorbing, biologically resolving floating matters or untreated matters of a second-stage treating water passing through sedimentation tank 20 by means of filtering materials thereof; a sterilizing tank 40 for sterilizing a third-stage treating water passing through filtering tank 30 by means of an injection and a mixing of a disinfectant therein and comprising a disinfectant tank 41 having the disinfectant formed at an outside thereof and a disinfectant pump 42 for supplying the disinfectant of the disinfectant tank 41; an air blower 50 for supplying the air to the air diffuser 14; and a discharging pump 44 for discharging s fourth-stage treating water passing through the sterilizing tank 40 to an outside of the ship.
[2] A sewage treatment apparatus for ship as claimed in claim 1, further comprising a sediment transfer pipe 21 for transferring the sediments of the sedimentation tank 20 to the inlet 11 of the biofilm reactor 10.
[3] A sewage treatment apparatus for ship as claimed in claim 2, wherein the sediments of the sedimentation tank 20 are moved to the biofilm reactor 10 by using an air lift pumping method for supplying the air to an inside of the sediment transfer pipe 21 through the air blower 50.
[4] A sewage treatment apparatus for ship as claimed in claim 1, wherein an air supply pipe 31 for supplying the air to an inside of the filtering tank 30 and connected to the air blower 50 is formed at the inside of the filtering tank 30 so as to promote the dissolving of floating matters and organic matters of the second- stage treating water.
[5] A sewage treatment apparatus for ship as claimed in claim 1, wherein the sterilizing tank 40 allows the air to be supplied to an inside thereof through the air blower 50, whereby promoting a mixture of the third-stage treating water and the disinfectant therein.
[6] A sewage treatment apparatus for ship as claimed in claim 1, further comprising a water level detecting sensor 43 formed at an inside of the sterilizing tank 40 and a discharging pump 44 for discharging the fourth-stage treating water to an outside according to detected signals of the water level detecting sensor 43.
PCT/KR2008/001968 2008-04-01 2008-04-08 Biochemical sewage treatment system for marine use WO2009123374A1 (en)

Applications Claiming Priority (2)

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KR20080030378A KR100938463B1 (en) 2008-04-01 2008-04-01 Biochemical sewage treatment system for marine use
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CN108585256A (en) * 2018-07-03 2018-09-28 浙江融乐环境科技有限公司 A kind of small ship type sedimentation tank device for treating sewage
CN108911284A (en) * 2018-05-31 2018-11-30 中海油能源发展股份有限公司 A kind of offshore platform sanitary sewage disposal electrolytic method
CN109095664A (en) * 2018-09-21 2018-12-28 南通朝旭环保科技有限公司 A kind of wastewater treatment equipment
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CN105461171A (en) * 2015-12-16 2016-04-06 徐州工程学院 Bacteria filter type sewage purifying device and method
CN108911284A (en) * 2018-05-31 2018-11-30 中海油能源发展股份有限公司 A kind of offshore platform sanitary sewage disposal electrolytic method
CN108585256A (en) * 2018-07-03 2018-09-28 浙江融乐环境科技有限公司 A kind of small ship type sedimentation tank device for treating sewage
CN109095664A (en) * 2018-09-21 2018-12-28 南通朝旭环保科技有限公司 A kind of wastewater treatment equipment
CN111675400A (en) * 2020-06-17 2020-09-18 苏波 Sewage purification treatment device
CN111908707A (en) * 2020-06-28 2020-11-10 中船第九设计研究院工程有限公司 Novel marine sewage advanced treatment system and use method thereof
CN113754195A (en) * 2021-09-28 2021-12-07 黑龙江怀德环保有限公司 Microbial treatment method for municipal sewage

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