KR20210123113A - Eco-friendly sewage and gray water treatment system for ships - Google Patents

Abstract

The present invention relates to an environmentally-friendly filthy water and sewage treatment system for a ship, which is able to have a very simple structure, require no large-capacity storage tank, be easily placed even in a small space, simultaneously treat filthy water and sewage, and discharge only the minimum volume of filthy water or sewage to the ocean, comprising: a vaporizing tank which simultaneously receives, stores, and vaporizes the treatment water, which has passed through a filthy water treatment facility, and the sewage, which is generated in residential districts; a heat exchange means which exchanges heat with the steam vaporized and discharged from the vaporizing tank; and a liquefying tank which liquefies the steam supplied through the heat exchange means, and stores the cleaned water. Accordingly, the present invention is capable of minimizing the limitations in the installation space, being installable even in a small space, and minimizing the pollution in the ocean.

Description

Eco-friendly sewage and gray water treatment system for ships}

The present invention relates to a treatment system for treating sewage and sewage generated in a ship, and more particularly, it does not require a large-capacity storage tank due to a minimal and simple structure, so that it is easy to arrange in a narrow space, and it also treats sewage and sewage. It relates to an eco-friendly sewage and sewage treatment system for ships that discharges only a minimum amount of sewage or wastewater to the sea while simultaneously treating it.

In recent years, as a serious problem regarding environmental pollution, especially water pollution, has emerged, each country is continuously conducting research and development on the treatment of various types of sewage and wastewater in their territory and the treatment of marine polluted water in neighboring coasts. .

Currently in operation, only the sewage discharged from the toilet is treated through a Sewage Treatment Plant (STP) in accordance with the Marine Pollution Prevention Agreement (MARPOL), and then discharged to the sea or recycled for cleaning or dilution. In recent years, most of the sewage treatment facilities adopt a microbial treatment method with high treatment efficiency and space utilization.

In addition, a large amount of domestic sewage (gray water, hereinafter referred to as 'sewage') discharged from the kitchen, laundry room, and shower room of the residence is directly discharged into the sea without separate treatment or stored in a storage tank and then cleaned according to the treatment conditions. Alternatively, they are recycled for dilution or discharged into the ocean.

In this way, in order to treat sewage and wastewater from a ship, a sewage treatment facility (STP), a treated water storage tank for storing treated water treated through the sewage treatment facility, and a sewage storage tank for storing sewage are included.

Here, fresh water for dilution of sewage treatment facilities as well as fresh water for tank cleaning are periodically required to be supplied, and the daily discharge of sewage and sewage based on 36 people is as follows.

- Wastewater generation 36(persons)×10L = 360 L/Day

- Demand for fresh water for dilution (based on STP for 36 people) = 1,800 L/Day

- Sewage generation 36×14L = 5,040 L/Day

* 360 + 1800 + 5040 = 7,200 m3/day

As described above, each storage tank itself, which is a facility for treating a large amount of sewage from a ship, in particular, has to be enlarged, and marine pollution has also reached a serious state due to a large amount of sewage discharged into the sea.

As described above, the prior art for treating sewage or sewage from a ship includes Korean Patent Publication No. 10-0938463, Korean Utility Model Publication No. 20-2012-0003629, and Korean Patent Application Laid-Open No. 10-2012-0035300 , as published in Korean Patent Publication No. 10-212-0117100, Korean Patent Publication No. 10-1226547, Korean Patent Publication No. 10-2017-0009335, Korean Patent Publication No. 10-2018-0120419, etc. There is (hereinafter referred to as 'prior art documents').

However, in the above prior art documents, the disadvantage of requiring a large number of treatment tanks or facilities for treating sewage or sewage, in particular, a system for simultaneously treating treated water and sewage treated in a sewage treatment facility is could not be built

Republic of Korea Patent Publication No. 10-0938463 Republic of Korea Public Utility Model Publication No. 20-2012-0003629 Republic of Korea Patent Publication No. 10-2012-0035300 Republic of Korea Patent Publication No. 10-212-0117100 Republic of Korea Patent Publication No. 10-1226547 Republic of Korea Patent Publication No. 10-2017-0009335 Republic of Korea Patent Publication No. 10-2018-0120419

The specific technical solution of the present invention for solving the problems of the related art as described above is that it does not need a large-capacity storage tank due to its minimal and simple structure, so it is easy to arrange even in a narrow space and simultaneously treats sewage and sewage with a minimum amount of water. An object of the present invention is to provide an eco-friendly sewage and sewage treatment system for ships that discharges only sewage or wastewater into the ocean.

Another specific technical solution of the present invention is to selectively perform a heat exchange method according to the operating conditions of a ship.

Another specific technical solution of the present invention is to maximize the utility of the treated fresh water.

A specific technical solution of the present invention for solving the above specific technical solution is a treatment system for simultaneously treating treated water that has passed through a sewage treatment facility provided on a ship and sewage generated in a residence, wherein the treatment system is an evaporation tank for evaporating while receiving and storing the treated water and the sewage generated from the residence at the same time; a heat exchange means for exchanging the water vapor evaporated and discharged from the evaporation tank; and a liquefaction tank that liquefies the water vapor supplied through the heat exchange means and stores the fresh water.

Each of the evaporation tank and the liquefaction tank includes a water level sensor, a temperature sensor, and an air vent.

The evaporation tank includes a heat supply means for evaporation is provided.

The heat supply means is either evaporated by waste steam supplied through a waste steam engine or evaporated by heating of a heating member.

The heat exchange means is either a water cooling type or an air cooling type.

The water cooling type includes heat-exchanging water vapor supplied between the evaporation tank and the liquefaction tank by a water jacket.

The air cooling method is either a method of directly supplying atmospheric cold air into the liquefaction tank or a method of exchanging heat with an air cooler for water vapor supplied from an evaporation tank to a liquefaction tank.

The liquefaction tank further includes a recycle line for supplying the stored fresh water to an evaporation tank or a sewage treatment facility for dilution or cleaning.

The present invention does not require a large-capacity storage tank due to its minimal and simple structure, so it is easy to deploy even in a narrow space and simultaneously treats sewage and sewage while discharging only a minimum amount of sewage or wastewater to the sea, thereby reducing the limitation of installation space. In addition to minimization, it has the effect of being able to install in a narrow space and also having the effect of minimizing marine pollution.

In addition, by allowing the heat exchange method to be selectively performed according to the operating conditions of the vessel, there is also an effect that heat exchange can be performed more efficiently depending on the operating vessel.

In addition, by maximizing the utility of the treated fresh water, it also has the effect of minimizing the storage tank facility.

1 is a conceptual diagram to which the water-cooled heat exchange method of the present invention is applied;
2 is a conceptual diagram to which the air-cooled heat exchange method of the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings, and the present invention is not limited or limited by the embodiments.

1 is a conceptual diagram to which the water-cooled heat exchange method of the present invention is applied.

As shown, in order to treat sewage and wastewater generated by the ship, a conventional ship operating in the sea is provided with a sewage treatment facility (STP) and a treated water storage tank for storing the treated water processed through the sewage treatment facility. .

In addition, the situation is that the stored sewage is discharged from the treatment area of the ocean, which is also equipped with a sewage storage tank for storing a large amount of sewage generated in the residential area.

Accordingly, not only the facility itself for treating sewage or sewage in a conventional ship has grown in size, but also marine pollution has reached a serious state due to a large amount of sewage discharged into the sea.

As a result, a large number of treatment tanks or facilities for treating sewage or sewage are required for a ship in operation, which has a disadvantage in that it has various restrictions on installation space as well as a large investment cost.

The present invention does not require a large-capacity storage tank due to its minimal and simple structure, so it is easy to deploy even in a narrow space and, while simultaneously treating sewage and sewage, discharges only a minimum amount of sewage or wastewater into the sea. to provide a system.

The treatment system for simultaneously treating sewage and sewage according to the present invention is an evaporation tank 10 for evaporating while receiving and storing the treated water that has passed through the sewage treatment facility 100 normally provided on a ship and the sewage generated from the residence at the same time. Wow; a heat exchange means (20) for exchanging the water vapor evaporated and discharged from the evaporation tank (10); and a liquefaction tank 30 for liquefying the water vapor supplied through the heat exchange means 20 and storing it as fresh water. The sewage treatment facility 100 is preferably applied to a conventional microbial treatment method.

In other words, according to the present invention, the treated water treated in the sewage treatment facility and the sewage generated in the residence are simultaneously introduced into the evaporation tank and evaporated. At this time, the evaporation is performed by a heat supply means provided in the evaporation tank as will be described later, which will be described later.

That is, by evaporating while simultaneously introducing treated water and sewage in the evaporation tank, there is no need for a large storage tank for storing and then treating treated water and sewage as in the prior art. It is possible to build a condition that can omit a large storage tank for storing sewage.

In this way, the water vapor evaporated in the evaporation tank is heat-exchanged to an appropriate temperature by a heat exchange means, liquefied in the liquefaction tank, and then stored as fresh water. The liquefaction tank may be supplied with atmospheric cold air for liquefaction.

That is, since the water vapor evaporated in the evaporation tank is at a very high temperature, heat exchange is performed by a heat exchange means at an appropriate temperature to maintain the optimum liquid state in the liquefaction tank. The fresh water liquefied in the liquefaction tank may be used for cleaning or dilution.

Accordingly, the present invention does not have a complicated technical configuration, but an evaporation tank that simultaneously flows in and evaporates treated water and sewage treated in a sewage treatment facility, and converts the water vapor to be evaporated to fresh water by liquefaction, so that the installation area It has the conditions to minimize marine pollution by discharging only a minimum amount of sewage or wastewater into the ocean as well as being easy to deploy in a narrow space.

In the above, the evaporation tank 10 and the liquefaction tank 30 have a typical water level sensor 12, 32, a temperature sensor (not shown) and a typical air vent 14 for air release. (34) is provided. The temperature sensor in the evaporation tank is for controlling the intensity of heating in the heat supply means to be described later for rapid evaporation according to the inflow amount of the incoming sewage and sewage. The temperature sensor in the liquefaction tank is for controlling the degree of heat exchange of the incoming water vapor. When the water level sensor in the evaporation tank is higher than the set water level, it is preferable to not only discharge it to the ocean through a discharge valve, but also supply it to a sewage treatment facility for recycling in some cases.

In addition, the evaporation tank 10 includes a heat supply means 15 for rapid evaporation is provided. The heat supply means 15 is either evaporated by waste steam supplied through a waste steam engine in the ship or evaporated by heating of a heating member such as a conventional heating jacket or heating coil. The heat supply means may be disposed inside the evaporation tank as well as disposed outside.

Accordingly, according to the amount of sewage and sewage flowing into the evaporation tank, evaporation can be performed quickly by heating the heat supply means.

In addition, the heat exchange means 20 is, for example, a water-cooling type is applied, and the water cooling type includes heat-exchanging water vapor supplied between the evaporation tank 10 and the liquefaction tank 30 by the water jacket 22 . It is preferable that the water jacket not only circulates cooling water in various cooling water tanks provided in the ship, but also circulates seawater directly to heat exchange.

Accordingly, the liquefaction efficiency in the liquefaction tank can be improved by exchanging the vapor evaporated from the evaporation tank to an appropriate temperature by a heat exchange means before flowing into the liquefaction tank.

On the other hand, the liquefaction tank 30 further includes a recycling line (recycle line, 35) by a conventional method for supplying the stored fresh water to the evaporation tank 10 or the sewage treatment facility 100 for dilution or cleaning. .

In the above, when fresh water is to be used for dilution of sewage treatment facilities, it is preferable to supply it after converting it to about 45° C. or less by a conventional method. That is, when the fresh water is 45° C. or higher, it is preferable to provide the above temperature suitable for activation without harming the microorganisms because it can rather harm microorganisms in the sewage treatment facility to which the microorganism treatment method is applied. do.

In addition, when fresh water is used for cleaning, it can be directly withdrawn from the liquefaction tank and used after being stored in a conventional storage tank provided in the ship.

2 is a conceptual diagram to which the air-cooled heat exchange method of the present invention is applied.

As shown, in the above configuration, the heat exchange means provided for liquefying the high-temperature water vapor evaporated in the evaporation tank in the liquefaction tank under optimum conditions can apply water cooling as described above as well as an example in which air cooling is applied. explain

The heat exchange means 20 is another embodiment to which an air cooling type is applied. The air cooling type is a method of directly supplying cold air by natural convection of the atmosphere into the liquefaction tank 30 or between the evaporation tank 10 and the liquefaction tank 30 . It is one of the methods of heat-exchanging the water vapor supplied to the conventional air cooler (23). The reason for the heat exchange by the heat exchange means has been described above, and a detailed description thereof will be omitted.

In other words, the air cooling method is preferably applied to ships sailing in the polar region, and may be applied in addition to the polar region.

In addition, the air cooler may be formed in the form of a conventional jacket on the line for supplying water vapor.

Accordingly, the heat exchange means may selectively apply an air cooling type as well as a water cooling type according to the conditions in which the vessel sails.

10: evaporation tank 12, 32: water level sensor
14,34: air vent 15: heat supply means
20: heat exchange means 22: water jacket
23: air cooler 30: liquefaction tank
35: recycling line
100: sewage treatment facility

Claims (8)

A treatment system for simultaneously treating treated water that has gone through a sewage treatment facility provided on a ship and sewage generated from a residence,
The treatment system includes: an evaporation tank for evaporating while receiving and storing the treated water and the sewage generated from the residence at the same time that has passed through the sewage treatment facility;
a heat exchange means for exchanging the water vapor evaporated and discharged from the evaporation tank; and
and a liquefaction tank that liquefies the water vapor supplied through the heat exchange means and stores it as fresh water. According to claim 1,
The evaporative tank and the liquefaction tank are each provided with a water level sensor, a temperature sensor, and an air vent (air vent). Eco-friendly sewage and sewage treatment system for ships. According to claim 1,
Eco-friendly sewage and sewage treatment system for ships, comprising a heat supply means for evaporation in the evaporation tank. According to claim 1,
The heat supply means is an eco-friendly sewage and sewage treatment system for ships that is either evaporated by waste steam supplied through a waste steam engine or evaporated by heating of a heating member. According to claim 1,
The heat exchange means is an eco-friendly sewage and sewage treatment system for ships that is either water-cooled or air-cooled. 6. The method of claim 5,
The water-cooling type is an eco-friendly sewage and sewage treatment system for ships, comprising heat-exchanging water vapor supplied between the evaporation tank and the liquefaction tank by a water jacket. 6. The method of claim 5,
The air-cooling type is an eco-friendly sewage and sewage treatment system for ships that is either a method of directly supplying atmospheric cold air into the liquefaction tank or a method of heat-exchanging water vapor supplied between an evaporation tank and a liquefaction tank by an air cooler. According to claim 1,
Eco-friendly sewage and sewage treatment system for ships, the liquefaction tank further comprising a recycle line for supplying the stored fresh water to an evaporation tank or a sewage treatment facility for dilution or cleaning.

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