JPH09328093A - Sewage treatment equipment for ship or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the ocean from being contaminated by disposer waste water of high concentration by respectively providing an aeration air pipe communicated with pressure air source in a pre-treatment chamber and an aeration air pipe communicated with a pressure air source and a contact oxidization plate in a contact oxidization chamber. SOLUTION: A treatment tank 7 is filled with water beforehand, and waste water of high concentration discharged from a disposer is introduced to a pre- treatment chamber 8. On the other hand, pressure air from an air pipe 20 is supplied to an aeration air pipe 14, continuously jetted out into water from small holes after being changed into bubbles, water articles are broken by aeration action, a number of aerobic microbes are produced by the supplying of oxygen and organic materials are decomposed into carbonic acid gas and water. Also, contact oxidization plates 19 are arrayed on the full width of a first contact oxidization chamber 9, bubbles are divided into small pieces by clashing with a number of wrinkles, the concentration of oxygen solved in water is increased, aerobic microbes are produced in the contact oxidization plates 19 in a film shape and cleaning efficiency is improved by adding oxygen thereto.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating domestic waste water for ships and ships, and more particularly to an apparatus for preventing marine pollution.

[0002]

2. Description of the Related Art Conventionally, as domestic miscellaneous wastewater on ships and ships, high-concentration miscellaneous wastewater obtained by crushing food waste, leftover food and the like with a desposer was thrown into the sea as it is.

[0003]

Therefore, the dumping of high-concentration desposer wastewater into the sea as it is has an environmental problem of polluting the ocean. Therefore, the present application is characterized by solving the above-mentioned problems.

[0004]

In order to solve the above-mentioned object, the present application receives high-concentration miscellaneous wastewater such as desposer wastewater along the direction of flow in a treatment tank, and opens upward. The pretreatment chamber, the catalytic oxidation chamber whose upper and lower sides are open, the catalytic oxidation chamber communicating with the lower side, and the precipitation chamber whose upper side is open, and the filtration chamber on the upper side, and the water level controller controls the water level. Is controlled, and a water level control chamber communicating with the discharge pipe is sequentially installed, and an air pipe for assault communicating with a pressurized air source is further provided in the pretreatment chamber, and the contact oxidation chamber is also pressurized. It is characterized by disposing an air pipe for turbulence and a contact oxidation plate which are in communication with an air source, preferably, between the pretreatment chamber and the contact oxidation chamber, a pressurized air source inside and Pre-stage contact that opens above with a communicating air tube for air and a contact oxidation plate Providing an ionization chamber. Further, in the above, in order to enhance the purifying action, the air pipes for aeration are arranged close to the front side in the flow direction of the respective chambers, and a bacterial liquid tank is provided outside the treatment tank. And the pre-stage catalytic oxidation chamber are connected via a metering pump. Furthermore, in order to treat low-concentration miscellaneous wastewater, an inflow pipe for supplying low-concentration wastewater discharged from a handwasher or the like is connected to the water level control chamber.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings, an embodiment of the present invention will be described in detail. FIG. 1 shows a floor 1 of a cabin equipped with a desposer 2, a handwasher 3, a bathtub 4, a washbasin 5, a washing machine 6 and the like. The configuration is shown in the case of doing so, and in reality, these devices are provided in proportion to the number of users, and therefore the amount of waste water generated from those devices is also approximately proportional to the number of users. Reference numeral 7 denotes a treatment tank installed at a lower position of the floor 1. The treatment tank 7 has therein a pretreatment chamber 8, a first catalytic oxidation chamber 9, and a second catalytic oxidation chamber along the flow direction. Chamber 10, settling chamber 11 and filtration chamber 2
A water level control chamber 12 having an upper portion 4 is sequentially provided continuously, and the pretreatment chamber 8 faces the left side wall 7a of the treatment tank 7 in the drawing and the partition wall, and the lower portion is closed and the upper portion is opened. A thick waste water pipe 13 and an exhaust branch pipe 15a which are formed by a wall 17 are connected to the upper portion of the processing chamber 8, and the waste water pipe 13 is connected to the desposer 2 via an opening / closing valve V1. Waste water branch pipes 13a from the hand washing device 3 and the like are connected to each other, and an exhaust branch pipe 15a is connected to an exhaust pipe 15 to which an exhaust blower 16 is connected. Further, in the inner bottom portion of the pretreatment chamber 8, an air blower 33 provided outside the treatment tank 7 is connected via an air pipe 41, and a large number of small holes are provided in the front-back direction (direction perpendicular to the flow direction). An air tube 14 for aerial air that extends to the bottom is provided.

The first catalytic oxidation chamber 9 has a partition wall 17
It is formed by a partition wall 18 which is opposed to the partition wall and which is closed at the lower side and is opened at the upper side slightly larger than the partition wall 17, and is internally provided with a fold so as to extend in the front-rear direction and to have a large surface area. A large number of contact oxidation plates 19 made of vinyl chloride or the like are arranged over the entire width so as to be parallel to each other in the left-right direction, and are connected to the air blower 33 through the air pipe 41 at the inner bottom portion, and
An aerial air tube 2 extending in the front-rear direction and provided with a number of small holes a
0 is provided.

The second catalytic oxidation chamber 10 has the partition wall 18
And a large number of contact oxidation plates 22 made of vinyl chloride or the like which are formed by a partition wall 21 which is opposed to the partition wall 21 and which is open at the upper and lower sides, and which has a fold like the contact oxidation plate 19 inside. The air blower 33 is arranged over the entire width and is connected to the air blower 33 through the air pipe 41, and has an aerial air pipe 23 having a large number of small holes and extending in the front-rear direction. .

The settling chamber 11 faces the partition wall 21 and the partition wall 21, and a lower part formed by a partition wall 25 which is opened a little larger than the partition wall 21 and is closed lower part is the second contact. It is composed of a still water chamber that communicates with the oxidation chamber 10.

The filtration chamber 24 is formed by an upper portion of the partition wall 25 and a partition wall 26 which faces the partition wall 25 and which is open at the upper side and the lower side, and has a porous plate 28 at the lower side.
Is detachably fixed between the partition plate 25 and the partition plate 26, and a filter material 27 such as a hora chip is housed inside. An exhaust branch pipe 15b communicating with the exhaust pipe 15 is connected to the upper portion of the filtration chamber 24.

The water level control chamber 12 is a chamber which is formed by the partition wall 25 and the right side wall 7b of the processing tank 7 in the figure and stores the filtered water from the filtration chamber 24. Float switch type water level controller 2 along the vertical direction
9, 30, and 31 are respectively separated in stages, and the water level is controlled by this.

Above the water level control chamber 12, an inflow pipe 42 into which relatively low-concentration wastewater from the bathtub 4, handwasher 3, washbasin 5, washing machine 6, etc. flows in is provided with a normally-open stop valve V2. An inflow port 32 connected thereto and an outflow port 34 connected to an overflow pipe 43 are respectively provided, and an inflow branch pipe 42a such as the hand washing device 3 is connected to the inflow pipe 42 via a normally open stop valve V3, and , This overflow pipe 43
Water discharge pipe 4 for discharging wastewater to the outside of the ship via check valves V4 and V5
4 is connected.

A normally closed discharge valve V6 is provided at the bottom of the pretreatment chamber 8 and is connected to a drain pump 36 through a connecting pipe 35 and a normally open stop valve V7. Further, normally open discharge valves V8 and V9 are provided at the bottoms of the first catalytic oxidation chamber 9 and the second catalytic oxidation chamber 10, respectively, and normally open discharge valves V10 are also provided at the bottom of the water level control chamber 12. These are provided, and these are connected to the drainage pump 36 through the connecting pipe 35 and the normally open stop valve V7.

The drainage pump 36 is connected with a pressure gauge 37, a normally closed shutoff valve V11 and a check valve V12, and a water discharge pipe 44.
Is connected to the connecting pipe 35, and the stop valve V7 is connected to the connecting pipe 35.
A normally-closed shut-off valve V13 is provided at a position opposite to the flow direction and is connected to a water supply pipe 45 of the ship. In addition, a tank 38 containing a bacterial solution is provided outside the processing tank 7.
Is arranged, and a fixed amount of the bacterial solution is injected from the tank 38 by the constant amount pump 39 once a day through the inlet 40 at the upper part of the first catalytic oxidation chamber 9.

In use, however, the treatment tank 7 is filled with water in advance, and in this state, it is discharged by a crushed product such as leftover food and vegetable scraps, that is, a desposer 2 which is discharged by a desposer 2 installed in a dining room or a cooking room. The high-concentration miscellaneous wastewater thus generated flows into the pretreatment chamber 8 through the miscellaneous wastewater pipe 13 via the wastewater branch pipe 13a. On the other hand, the air blower 33 is continuously operated for 24 hours while the processing tank 7 is in use, and the pressurized air is supplied to the aerial air pipe 14 through the regulating valve V15, the pressure gauge 46 and the air pipe 41 to pressurize the air. Air becomes bubbles from small holes and is continuously ejected into the water.By this aerobic effect, waste is crushed and oxygen is supplied, and a large number of aerobic microorganisms are generated, whereby organic matter becomes carbon dioxide and water. Is decomposed into.

In the above description, the aerating air pipe 14 is provided close to the front side in the flow direction of the pretreatment chamber 8 as shown in the drawing, so that when bubbles rise, the air flow for circulating the air in the pretreatment chamber 8 is repeated. Oxygen is supplied.

The water overflowing the pretreatment chamber 8 flows into the first catalytic oxidation chamber 9 over the partition wall 17, and in this chamber 9 as well, the air pipe 20 is arranged at the inner bottom portion thereof. Due to the presence of air bubbles, a large number of aerobic microorganisms are generated by the aerobic action of the bubbles ejected from the small holes, and the contact oxidation plates 19 are arranged over the entire width of the first catalytic oxidation chamber 9, so that the bubbles are present between them. In addition, since the catalytic oxidation plate 19 has many wrinkles, the bubbles collide with the wrinkles and are subdivided to increase the concentration of oxygen dissolved in the water, and the catalytic oxidation plate 19 contains aerobic microorganisms. It is generated in the form of a film and oxygen is given to this to remarkably enhance the purification efficiency.

Further, as shown in the figure, the air pipe 20 for turbulent air is provided close to the front side in the flow direction of the first catalytic oxidation chamber 9, so that when air bubbles rise between the catalytic oxidation plates 19, they are circulated in the chamber. The wastewater nutrient (BOD component) is repeatedly supplied to the microorganisms existing on the surface of the catalytic oxidation plate 19 to purify it.

This purifying action is similarly performed in the second catalytic oxidation chamber 10, but in the chamber 10, the lower part is in communication with the precipitation chamber 11, and the precipitation chamber 11 is in a state where water is stationary. Therefore, the solid content is precipitated and separated in the precipitation chamber 11, and only the purified water flows into the filtration chamber 24 from the upper part over the partition wall 25. The filter chamber 24 is filled with a filter material 27 such as wood porous chips (hola chips), and the purified water that has flowed into the filter chamber 24 is filtered by the porous voids of the filter material 27. Then, the solid content remaining in the voids is eaten by the generated microorganisms, so that the water quality is further purified and clogging is prevented.

The purified water filtered by the filter material 27 flows down into the water level control chamber 12 by the porous plate 28. In this water level control chamber 12, a float type switch is provided stepwise in the depth direction, and when water is accumulated up to the water level M at the start of pump operation, the water level controller 29 at the intermediate position is turned on and the drainage pump 36 is operated and the discharge valve V10 is opened, and the water in the water level control chamber 12 is discharged to the outside of the ship by the water discharge pipe 44 through the shutoff valve V7, which lowers the water level and stops the water level N of the pump. Then, the water level controller 30 at the lower position is turned on, the drainage pump 36 is stopped, and the drain valve V
The valve 10 is closed and the discharge of water is stopped. When the drainage pump 36 or the like malfunctions and the water level in the water level control chamber 12 reaches the over position L, the water level controller 31 at the upper position is turned on.
Although not shown, an alarm signal is issued.

On the other hand, 50 pp of waste water having a relatively low concentration, such as hand wash 3, wash basin 5, washing machine 6 and the like.
In the case of waste water of m or less, the waste water directly flows into the upper part of the water level control chamber 12 through the inflow pipe 42. Also in this case, as described above, the water level controllers 29, 30 and 31 operate and stop the drainage pump 36 and generate an alarm signal.

The air blown out from the aeration air pipes 14, 20 and 30 and causing the aeration action and the gas generated in the treatment tank 1 are discharged from the exhaust pipe 15 to a high place outside the vessel by the drain blower 16. Exhausted to. Further, the bacterial solution is injected into the first catalytic oxidation chamber 9 once a day automatically by the metering pump 39. Further, according to the experimental results, in the case of the food desposer wastewater having a BOD component of 3000 to 8000 ppm at the inlet position, it was purified to 50 ppm or less at the outlet position.

[0022]

As described above, according to the present invention, in the pretreatment section of the treatment tank, the waste is crushed by the aerobic action to facilitate the discharge purification, and the aerobic microorganisms dissolve the dissolved components in the wastewater. Is decomposed into carbon dioxide gas and water, and the wastewater is further decomposed and purified by the aerobatic action in the next-stage catalytic oxidation chamber to separate and precipitate solids in the precipitation chamber, and microbial filtration is performed in the filtration chamber. As a result, high-concentration desposer wastewater can be significantly purified, there is no risk of causing marine pollution even at the time of dumping into the sea, and since microorganisms can be fixed on the contact oxidation plate, water will flow out due to shaking of the ship. Also has the advantage that the performance can be maintained without the outflow of microorganisms.

According to the second aspect of the present invention, the decomposition and purification efficiency can be further increased by the two-stage catalytic oxidation chamber. Further, according to the third aspect, the bubbles are repeatedly multiplied by the water flow. The BOD component of waste water can be given to microorganisms to enhance purification efficiency, and according to the configuration of claim 4, by pouring the bacterial solution from the bacterial solution tank, food waste containing less bacteria can be obtained. Even in the case where the purification action by microorganisms is promoted, the number of large protozoa eating the bacteria increases, and the purification efficiency can be significantly increased.
According to the configuration of claim 5, low-concentration miscellaneous wastewater can be discharged by the same wastewater pump by flowing into the water level control chamber, which has an advantage that the space in the ship can be saved.

[Brief description of drawings]

Fig. 1 Overall figure

FIG. 2 is a sectional view of a main part

[Explanation of symbols]

 2 Desposer 3 Handwasher 7 Treatment tank 8 Pretreatment chamber 9 First contact oxidation chamber 10 Second contact oxidation chamber 11 Precipitation chamber 12 Water level control room 13 Miscellaneous wastewater pipe 14, 20, 23 Storm air pipe 17, 18, 21, 25 Partition Wall 19,22 Contact Oxidation Plate 24 Filtration Chamber 29,30,31 Water Level Controller 33 Air Blower 36 Drain Pump 38 Bacterial Liquid Tank 39 Metering Pump 42 Inflow Pipe 44 Release Pipe

Claims (5)

[Claims] 1. A pretreatment chamber that receives high-concentration miscellaneous wastewater such as desposer wastewater along the direction of flow in a treatment tank and that has a pretreatment chamber that is open at the top and a catalytic oxidation chamber that is open at the top and bottom. A water level control chamber that is in communication with the catalytic oxidation chamber at the bottom and a precipitation chamber that is open at the top and a filtration chamber at the top, and the water level is controlled by a water level controller, and that is in communication with the discharge pipe. And an air pipe for storm air communicating with a pressurized air source in the pretreatment chamber, and an air pipe for storm air and a contact oxidization plate communicating with the pressurized air source in the contact oxidation chamber. A domestic wastewater treatment device for ships and the like, which is characterized by being installed respectively. 2. A pre-stage catalytic oxidation chamber is provided between the pretreatment chamber and the catalytic oxidation chamber, in which a turbulent air tube communicating with a pressurized air source and a catalytic oxidation plate are provided inside and which opens upward. Claim 1 consisting of
Wastewater treatment equipment for daily life such as ships described. 3. The household wastewater treatment device for ships and the like according to claim 1 or 2, wherein the air pipes for storm are arranged close to the front side in the flow direction of each chamber. 4. A bacterial liquid tank is provided outside the processing tank,
The household wastewater treatment device for ships and the like according to claim 2 or 3, wherein the tank and the pre-stage catalytic oxidation chamber are communicated with each other via a metering pump. 5. The household wastewater treatment device for ships and the like according to claim 1, 2, 3 or 4, wherein an inflow pipe for supplying low-concentration wastewater discharged from a handwasher or the like is connected to the water level control room. .