JP4589203B2 - Liquid waste treatment equipment for ship life - Google Patents

Description

  The present invention relates to an apparatus for processing liquid waste for daily use of a ship, and more particularly to an apparatus for preventing marine pollution.

  Conventionally, in the wastewater for daily use on ships, raw garbage and leftovers are stored at high concentrations, such as leftovers and vegetable scraps, while the temporary storage is manually landed by occupants while berthed and crushed with a disposer during navigation. Was dumped into the sea as it was. In addition, the relatively low-concentration liquid that washed the dishes was dumped into the sea as it was, regardless of whether it was anchored or sailing. However, the disposal of such high-concentration liquid waste directly into the sea has caused an environmental problem of polluting the ocean.

Therefore, as shown in Patent Document 1, the applicant previously received a high-concentration wastewater such as a disposer wastewater along the flow direction in the treatment tank, and the pretreatment chamber opened upward. A contact oxidation chamber open at the top and bottom, a contact chamber connected to the bottom of the contact oxidation chamber, a precipitation chamber open at the top, and a filtration chamber at the top, and the water level controller controls the water level. In addition, a water level control chamber communicated with the discharge pipe is sequentially provided, a storm air pipe communicated with a pressurized air source is provided in the pretreatment chamber, and a pressurized air source is provided in the contact oxidation chamber. A wastewater treatment system for daily life such as a ship was proposed, which was provided with an air pipe for aerial communication and a contact oxidation plate respectively.
Japanese Patent Laid-Open No. 9-328093 Japanese Utility Model Publication No. 50-108260 JP-A-63-310698

  However, according to the above-mentioned liquid waste treatment apparatus for domestic use, since the high-concentration waste water is directly received in the treatment chamber in the previous stage of the treatment apparatus, the processing load varies greatly and uniform treatment is performed. There are inconveniences that efficiency cannot be obtained, and the place where the processing device to be enlarged is installed is also restricted by the place where the miscellaneous wastewater such as a disposer is generated, so that the degree of freedom of the installation place is greatly limited. was there.

The present invention, by receiving the living liquid waste such as disposable waste water, a storage tank for solid-liquid separating the waste, to clean up them by receiving the solid-liquid separated waste from the storage tank The storage tank and a separate processing unit main body, the processing unit main body , along the direction of the liquid flow, each of the partition plate, the contact oxidant and the air pipe for aerating air that are open at the top and bottom From the ceramics, the first contact oxidation chamber disposed and a front stage partitioned by a partition plate having upper and lower portions that receive waste liquid flowing out over the upper part of the partition wall that partitions the first contact oxidation chamber. A second contact oxidation chamber in which a contact oxidation material and a storm air pipe are arranged, and a microfiltration membrane and a storm air pipe are arranged in the latter stage, and the second contact oxidation chamber and the upper part are opened. The filtrate separated by the partition wall and filtered by the microfiltration membrane is used as a membrane. A treatment liquid chamber which is received through a pump and has a water level controller disposed in the depth direction, and a means for injecting bacterial liquid into each of the first and second contact oxidation chambers; equipped with are those made, which the effluent from the storage tank by the operation of the transfer pump was characterized by transferring to the processing apparatus main body, in particular by the transfer pump, the water level of the waste liquid in the storage tank is stopped It is characterized in that a certain amount of waste liquid is sequentially transferred by operating repeatedly at regular intervals until the water level is reached.

In the above, the storage tank is provided with a solid-liquid separation plate and a ventilating means inside.

  In the present invention, as described above, the storage tank and the processing apparatus main body are separated, and the storage tank once receives high-concentration miscellaneous wastewater and separates the liquid waste into the processing apparatus main body. Since it is configured to be purified in multiple stages by the main body of the processing apparatus, not only can the burden of processing in the main body of the processing apparatus be reduced, but also the storage tank can be used as a place where household liquid waste such as a disposer is generated. Can be installed at a position close to the tank, and a relatively large treatment device main body can be installed in a place with sufficient installation space away from the storage tank. is there.

  In particular, according to the invention described in claim 2, it is sufficient that the processing apparatus main body has an ability to always process a certain amount of waste liquid transferred from the storage tank. Can be configured compactly, and has an advantage that uniform and stable performance can be expected.

  Further, according to the inventions of claims 3 and 4, there is an advantage that the purification efficiency can be remarkably increased.

  The best mode for carrying out the present invention will be described in detail below with reference to the drawings. FIG. 1 shows a configuration when a disposer 2 and a sink 3 are provided on a floor 1 of a cabin, A storage tank 4 installed below the floor 1 in the vicinity of the disposer 2. The storage tank 4 has a solid-liquid separation plate 5 in a vertical shape and a bottom of the tank. Air blower pipes 8 and 9 that are connected to an air blower 6 provided at the top via an air pipe 7 and that have many small holes arranged in the longitudinal direction and extend in the front-rear direction are provided so as to sandwich the separation plate 5. .

  On the outer bottom of the storage tank 4, there are provided normally-closed discharge valves V1, V2 on the left and right with the solid-liquid separation plate 5 interposed therebetween, and these transfer pumps are connected via a connecting pipe 10 and a normally-open stop valve Va. 11 is connected.

  On one side wall of the storage tank 4, there is provided a control box 64 having a control circuit for transferring the liquid to the processing apparatus main body 15, which will be described later, at a constant amount by the transfer pump 11. A transfer pipe 16 is connected to the output side of the transfer pump 11 via a control valve Vb. In addition, a water level detector 12 for full water level, a water level detector 13 for activation, and a water level detector 14 for stop are arranged in the height direction on the other side wall of the storage tank 4. The control circuit controls the transfer pump 11 by signals from the detectors 12 to 14. That is, when the water level in the storage tank 4 rises to the position of the starting water level detector 13, the transfer pump 11 automatically starts and stops at regular intervals to transfer a certain amount of waste liquid, and the water level When the water level detector 14 for stopping is lowered, the transfer pump 11 automatically stops.

  An exhaust pipe 28c is connected to the upper portion of the storage tank 4 through an odor ventilator 29a.

  The processing apparatus main body 15 includes a pretreatment chamber 17, a first contact oxidation chamber 18, a second contact oxidation chamber 19, and a third contact oxidation chamber 20 along the direction of liquid flow (from left to right in the figure). And a treatment liquid chamber 21 provided with a water level controller are sequentially constructed.

The pretreatment chamber 17 is opposed to the left side wall 15a of the processing apparatus main body 15 in the figure and the partition plate 22 that is open at the top and bottom, and is opposed to the partition plate 22, and the bottom is closed and the top is open. A contact oxidation material 24 (in this example, a surface area of about 100 m ² / m 3) made of vinyl chloride having pleats is disposed between the partition plate 22 and the partition wall 23. In addition, the contact oxidant 24 is connected to an air blower 25 provided outside the processing apparatus main body 15 via an air pipe 26 at a position below the contact oxidant 24 and extends in the front-rear direction in which a large number of small holes are arranged in the longitudinal direction. A storm air tube 27 is provided.

  Further, exhaust pipes 28 a and 28 b are connected to the upper surface of the processing apparatus main body 15, and the exhaust pipe 28 is connected to the exhaust pipe 28 b via an odor ventilator 29.

  The first contact oxidation chamber 18 includes a partition plate 30 facing the partition wall 23 and the upper and lower portions thereof, and having an upper end formed higher than an upper end of the partition wall 23, and the partition plate 30, the lower part is closed and the upper part is opened, and the upper end is constituted by a partition wall 31 lower than the upper end of the partition plate 30, and the contact oxidation is performed between the partition wall 23 and the partition plate 30. Similar to the material 24, a large number of contact oxidation materials 24a longer than that are disposed, and are connected to the lower position of the contact oxidation material 24a via the air blower 25 and the air pipe 26, and the small holes are elongated. A number of air pipes 32 for storms extending in the front-rear direction are provided.

The second contact oxidation chamber 19 is formed by the partition wall 31 and the partition wall 33 facing the partition wall 31 and closed at the lower end and lower than the partition wall 31. A contact oxidation material 34 (in this example, a surface area of about 2000 m ² / m 3) formed of ceramics having a double contact area is disposed, and connected to the inner bottom portion via the air blower 25 and the air pipe 26, In addition, a diffuser pipe 35 that can be finer than the aerial air pipe 32 extends in the front-rear direction.

  The third contact oxidation chamber 20 is opposed to the partition wall 33 and the partition wall 36. The upper and lower portions of the third contact oxidation chamber 20 are open and the upper end is lower than the partition wall 33. The lower portion is closed and the upper portion is closed. It is formed by a partition wall 37 opened higher than the upper end of the plate 36, and is formed between the partition wall 33 and the partition plate 36, that is, in the front stage of the third contact oxidation chamber 20, with ceramics similar to the contact oxidant 34. The contact oxidant 34a is disposed, and an air diffuser 35a connected to the air blower 25 and the air pipe 26 and similar to the air diffuser 35 is provided at the bottom thereof.

  Further, a microfiltration membrane 38 is disposed between the partition plate 36 and the partition wall 37, that is, at the subsequent stage of the third contact oxidation chamber 20, and is connected to the lower side via the air blower 25 and the air pipe 26. Are provided in the longitudinal direction, and a membrane pump 40 for sending the filtrate filtered by the microfiltration membrane 38 to the processing chamber 21 described later is provided outside the processing apparatus main body 15. It is provided. Further, the partition wall 37 is provided with a water level detection switch 41 for automatically controlling the membrane pump 40 for sending a certain amount of filtrate.

  The treatment liquid chamber 21 is a chamber that is formed by the partition wall 37 and the right side wall 15b of the treatment apparatus main body 15 in the figure, and stores filtrate water from the membrane pump 40. Along with this, float-switch-type water level controllers 42, 43, and 44 are spaced apart in stages, whereby the water level in the processing liquid chamber 21 is controlled. An outlet 46 to which an overflow pipe 45 is connected is provided in the upper part of the processing liquid chamber 21 and is connected to a water discharge pipe 47 that discharges treated water to the outside of the ship via check valves V11 and V12.

  At the bottom of the pretreatment chamber 17, a normally closed discharge valve V4 is provided, which is connected to a discharge pump 49 via a connecting pipe 48 and a normally open stop valve V9. Furthermore, normally closed discharge valves V5, V6, V7 are provided at the bottoms of the first contact oxidation chamber 18, the second contact oxidation chamber 19, and the third contact oxidation chamber 20, respectively. A discharge pump 49 is connected via a pipe 48 and a normally open shut-off valve V9.

  A discharge pipe 47 is connected to the output side of the discharge pump 49 through a connection of a pressure gauge 50, a normally open closing valve V10 and a reverse branch valve V13, and the connecting pipe 48 flows with the closing valve V9. A normally closed stop valve V3 is provided at a position opposite to the direction, and this is connected to a water supply pipe 51 of the ship. Further, a tank 52 containing a bacterial solution is assigned to the outside of the processing apparatus main body 15, and the bacterial solution in the tank 52 is quantified by the metering pump 53 several times a day to the pretreatment chamber 17. It is injected from the inlet 54 at the top of the second contact oxidation chamber 19.

  Next, the operation of the marine liquid waste treatment apparatus for ships constructed as described above will be described. First, in use, the open / close valves V4, V5, V6, V7 of the drain pipes 55, 56, 57, 58 are closed and the open / close valve V8 of the treated water drain pipe 59 is opened. Moreover, the inside of the processing apparatus main body 15 is filled with water in advance, and in this state, pulverized matter such as leftovers and vegetable waste discharged by the disposer 2 installed in the cooking room or the dishwashing room, that is, discharged by the disposer 2. High-concentration miscellaneous wastewater flows into the primary side 62 of the storage tank 4 partitioned by the solid-liquid separation plate 5 by the miscellaneous wastewater pipe 61 through the wastewater branch pipe 60.

  The inflowing liquid waste leaves a solid content on the primary side via the solid-liquid separation plate 5, performs equilibrium separation with the liquid on the secondary side 63 of the storage tank 4, and further flows into the secondary side 63 of the storage tank 4. Small solids contained in the liquid are pulverized by aerodynamic action. That is, by operating the air blower 6 installed outside the storage tank 4 continuously for 24 hours, the pressurized air is supplied to the storm air pipe 8 via the regulating valve V17 and the air pipe 7, and the pressurized air is Bubbles are formed from the small holes, and are continuously ejected into the water. By this aerodynamic action, small solids contained in the liquid are crushed. In particular, by providing the air pipe 8 for aeration close to the surface of the solid-liquid separation plate 5, the effect of back-washing the solid-liquid separation plate 5 when the bubbles rise is exhibited. Further, since the primary side 62 of the storage tank 4 is also provided with the air pipe 9 for aeration, the anaerobic action caused by this causes the anaerobic decomposition and aerobic decomposition at the same time to decompose and reduce the volume of organic matter.

  The liquid on the secondary side 63 of the storage tank 4 is operated by the transfer pump 11 in accordance with a control command from the control box 64, whereby a predetermined amount of liquid is supplied every predetermined time in the pretreatment chamber 17 in the processing apparatus main body 15. It is transferred to. The liquid that has flowed into the pretreatment chamber 17 rises under the lower part of the partition plate 22 that is vertically arranged at an intermediate position in the pretreatment chamber 17, that is, before the liquid flows into the first contact oxidation chamber 18. The purification action by the contacted oxidant 24 and the aerial action by the storm air pipe 27 facilitate further solid-liquid separation and make the oxidant installation part aerobic.

  The liquid overflowing the pretreatment chamber 17 flows into the first contact oxidation chamber 18 over the upper part of the partition wall 23, and also in the chamber 18, as described above, for the aeration The aerobic action of the bubbles ejected from the small holes of the air pipe 32 causes aerobic microorganisms to be generated in the form of a film on the contact oxidant 24a having a large number of wrinkles. Then, the nutrient (BOD component) of the wastewater is repeatedly supplied to the microorganisms present on the surface of the contact oxidant 24a for purification.

  This purifying action is performed in the second contact oxidation chamber 19 in the same manner. That is, the liquid flows over the upper part of the partition wall 31 into the second contact oxidation chamber 19, and in the chamber 19, a hollow cylindrical contact material formed of ceramics instead of the contact oxidation materials 24 and 24 a. 34 are arranged in the surface direction and in the vertical direction, and this has a surface area for holding microorganisms that is several tens of times that of the contact oxidation material 24a disposed in the first contact oxidation chamber 18. Therefore, the purification rate can be further increased by the contact oxide material made of ceramics.

  This purifying action is also performed in the third contact oxidation chamber 20 in the next stage beyond the upper portion of the partition wall 33 of the second contact oxidation chamber 19. A contact oxidation material 34a similar to the contact oxidation material 34 formed of ceramics disposed in the second contact oxidation chamber 19 is disposed at the front stage of the chamber 20, and an upper portion is disposed at the subsequent stage. A partition plate 36 having an open lower portion, a partition wall 37 having an open upper portion and a closed lower portion, and a microfiltration membrane 38 disposed therebetween are disposed, and a membrane pump is provided outside. 40 and a transfer pipe 65 are provided.

  Thus, in the third contact oxidation chamber 20, the liquid flowing under the partition wall 36 and flowing between the partition walls 36 and 37 is further filtered by the microfiltration membrane 38 and thus purified in multiple stages. The purified water that has become the intermediate water is transferred to the next treatment liquid chamber 21 by the membrane pump 40. Further, the surface of the microfiltration membrane 38 is washed by the bubbles ejected from the small holes of the aerial air pipe 39 disposed below the microfiltration membrane, and the membrane is prevented from being clogged.

  Next, the purified water is transferred to the treatment liquid chamber 21 by the membrane pump 40. In this treatment liquid chamber 21, float-type water level controllers 42, 43, 44 are provided stepwise in the depth direction, and when water accumulates up to the water level M at which the drainage pump 49 starts operation, The water level controller 43 is turned on, the drain pump 49 is operated, and the water in the treatment liquid chamber 21 is discharged to the outside of the ship through the water discharge pipe 47 through the shut-off valve V9, and the water level is the stop water level of the drain pump 49. When the pressure falls to N, the lower water level controller 44 is turned OFF, the drain pump 49 is stopped, and the water discharge is stopped.

  In the above, when the discharge pump 49 or the like breaks down and the water level in the processing liquid chamber 21 reaches the overflow position 46, the water level controller 42 at the upper position is turned ON and generates an alarm signal (not shown).

  The air that has been blown out from the air pipes 27, 32, 35, 35 a and 39 for storm and brought about a turbulent action and the gas generated in the processing apparatus main body 15 are discharged from the exhaust pipe 28 by the odor ventilator 29. Exhausted to a high place outside the ship. In addition, the bacterial solution is automatically injected into the pretreatment chamber 17 and the second contact oxidation chamber 19 by the metering pump 53 in several times every day. According to the experimental results, in the case of a food disposer wastewater whose BOD component at the entrance position is 3000 to 4000 ppm, it was purified to about 10 ppm at the exit position of the main body of the processing apparatus.

Overall view

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Disposer 4 Storage tank 5 Solid-liquid separator plate 8, 9 Air pipe for storm 11 Transfer pump 12, 13, 14 Water level detector 15 Processing apparatus main body 17 Pre-processing chamber 18 1st contact oxidation chamber 19 2nd contact oxidation chamber 20 Third contact oxidation chamber 21 Treatment liquid chamber 22, 30, 36 Partition plate 23, 31, 33, 37 Partition wall 24, 24a Contact oxide material made of vinyl chloride 34, 34a Contact oxide material made of ceramics 27, 32, 39 Air pipe 35, 35a Air diffuser 38 Microfiltration membrane 40 Membrane pump 41 Water level detection switch 42, 43, 44 Water level controller 47 Water discharge pipe 51 Water supply pipe 52 Bacteria tank 53 Metering pump

Claims (3)

Lives liquid waste such as disposable waste by receiving a storage tank for solid-liquid separation of the waste and the storage tank to clean up them by receiving the solid-liquid separated waste from the storage tank A processing apparatus main body having a separate structure, and the processing apparatus main body is arranged with a partition plate having an open top and bottom, a contact oxidizing material, and an air pipe for aeration, respectively, along a liquid flow direction. A contact oxidizer made of ceramics in a front stage that is separated by a partition plate having upper and lower portions that receive waste liquid flowing out beyond the upper part of the partition wall partitioning the first contact oxidation chamber and the first contact oxidation chamber And a storm air pipe, and a second contact oxidation chamber in which a microfiltration membrane and a storm air pipe are arranged in the subsequent stage, and a partition wall having an open top with the second contact oxidation chamber The filtrate filtered by the microfiltration membrane is passed through a membrane pump. And a treatment liquid chamber in which a water level controller is disposed in the depth direction, and a means for injecting bacterial liquid into the first and second contact oxidation chambers, respectively. ones, and the marine life liquid waste treatment apparatus that the waste has been characterized by transferring to the processing apparatus body from the storage tank by the operation of the transfer pump. By the transfer pump, until said water level of the waste liquid in the storage tank reaches the stop level, and repeatedly activated every predetermined time, for the life of the ship according to claim 1, wherein the wherein the sequentially transferring a certain amount of waste Liquid waste treatment equipment. 3. The liquid waste disposal apparatus for marine life according to claim 1, wherein the storage tank includes a solid-liquid separation plate and a ventilator inside.

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