CN103553178A - Integrated cyclone disinfection device containing oil pressure cabin water treatment - Google Patents

Abstract

The invention relates to an integrated cyclone disinfection device for treating oil-containing ballast water. The purpose of the device is to solve the current situation that a single treatment method cannot be applied to the ballast water treatment of multiple ships. The main device, the motor, the shaft, the impeller, the ultraviolet lamp, the oil separator, and the outlet channel are composed of the swirl device, the ultraviolet device and the oil separator. The main device is a rectangular anti-corrosion carbon steel structure. The modification of the impeller is to modify the connection of the impeller, the motor drives the impeller to rotate, the water flow enters from the inlet of the main device, and the swirling flow is generated under the rotation of the impeller. The oil baffle on the main unit drains back into the hold. The invention has the advantages of simple equipment, small occupied area, high automatic control degree, etc.; it can be applied to the treatment of various oily ballast water, has good treatment effect and stable effluent quality.

Description

An integrated cyclone disinfection device for treatment of oily ballast water

technical field

The invention relates to the technical field of sewage treatment, in particular to an integrated cyclone disinfection device for treatment of oil-containing ballast water.

Background technique

In order to maintain stability when the ship is empty, a certain amount of seawater is pumped into the bilge to enhance the ability to resist wind and waves when it sets sail, and the water is released when it is loaded. This part of seawater is called ship ballast water. Ballast water is necessary for the safe navigation of ships, but it also causes serious harm to the environment. Ballast water is an important carrier of alien biological invasion. According to statistics, about 120×10 ⁸ tons of ballast water are transferred around the world by about 90,000 ocean-going ships every year, and there are 4,500 species of organisms that exist in the ballast water of ships and travel around the world with ships every day. There are about 500 invasive species spread by water, with an average of 110 million phytoplankton per cubic meter of ballast water. In addition, the ballast water discharged from ships transporting petroleum and other oily substances not only contains some organic matter and other pollutants, but also carries some oily substances, which are more harmful to marine life. Therefore, the random discharge of ballast water from oily ships will cause the breeding of harmful aquatic organisms and the spread of pathogens, destroy the ecological balance of organisms in different sea areas, and seriously threaten the marine environment. In order to prevent marine pollution, the ship's oily ballast water must be treated to meet the discharge standards before it can be discharged into the sea. At present, there are many ship ballast water treatment methods being studied internationally, mainly including physical methods, chemical methods and biological methods. Three categories.

The physical methods mainly include filtration method, cyclone separation method, heat treatment method and ultraviolet method.

The advantages of the filtration method are that the equipment is simple, easy to operate, takes up less space, and can effectively treat microorganisms of a certain size. However, the disadvantage is that it cannot handle small microorganisms and requires backwashing, and because the ballast water injected along the coast contains a large amount of flocs, it is easy to block the filter screen, and the filter screen needs to be backwashed frequently, which is energy-consuming and time-consuming.

The cyclone separation method is simple to operate and low in price, and can effectively remove large microbial energy consumption in ballast water. However, it cannot handle microorganisms with a specific gravity similar to that of seawater.

The heat treatment method uses the waste heat of the engine to directly heat and save energy, and effectively removes most microorganisms; the disadvantage is that redundant pipelines need to be installed, which will cause thermal stress to damage the ship.

The ultraviolet method is highly practical, does not produce harmful side effects, and has no side effects on pipelines, pumps, and coatings. However, it has high requirements on water quality and may cause genetic variation of lower organisms.

Chemical methods mainly include chlorination method, hydrogen peroxide method, ozone method and so on.

The advantage of the chlorination method is that the medicine is cheap and the treatment method is simple. However, affected by factors such as pH, temperature, and microbial species, it is easy to cause corrosion of pipelines and ballast tanks, and also produce pungent odors.

In the hydrogen peroxide method, the residue is easily decomposed into water and oxygen without secondary pollution; the required concentration is high, the cost is expensive, and there are storage and operation safety problems.

The ozone method has a high reaction rate, no secondary pollution and high cost, but it has high requirements for equipment and is difficult to manage and maintain.

In addition, in addition to physical and chemical methods, domestic and foreign scholars have also researched and developed biological methods for the treatment of oily ballast water. The new species is currently very limited in practical application.

To sum up, the current problem in the treatment of ships' oily ballast water is that the domestic sewage of ships is different from urban sewage, and its production and discharge are limited by unique environmental conditions and have their own characteristics. Different ship structures and drainage systems The quantity and quality of domestic sewage discharged are different. Therefore, a single treatment method cannot be applied to the ballast water treatment of multiple ships.

Contents of the invention

The object of the present invention is to provide an integrated cyclone disinfection device for treating oily ballast water. In order to solve the current situation that a single treatment method cannot be applied to the ballast water treatment of multiple ships, the present invention combines a cyclone, an ultraviolet light, and an oil separator to form an integrated cyclone disinfection device. The device is composed of a main device, a motor, a rotating shaft, an impeller, an ultraviolet lamp, an oil separator, and a water outlet. The main device is a rectangular anti-corrosion carbon steel structure. The motor is connected to the impeller through a rotating shaft, and the motor drives the impeller to rotate. The water flow enters from the inlet of the main device, and the swirling flow is generated under the rotation of the impeller to separate the oil and remove it through the oil separator. The rest of the water body flows out from the outlet channel after the ultraviolet lamp tube removes microorganisms.

The advantage of the present invention is to combine the advantages of cyclone, ultraviolet light and oil separator. have:

1. The cyclone device is easy to operate and low in price. It can effectively remove large particles and organisms in ballast water, and destroy most multicellular animals, plants and harmful pathogenic bacteria, such as eggs, larvae, spores, etc., and can also Desilting of ballast tank bottoms.

2 Ultraviolet radiation has a good killing effect on organisms and pathogens in ballast water. The principle is that ultraviolet radiation can cause photochemical reactions in cellular nucleic acids, so that DNA cannot be replicated normally, and biological tissues cannot undergo cell division, which is very important for the life cycle. For short microorganisms, it means that the number of organisms after treatment will be greatly reduced, and if the time is long enough, it can kill most of the organisms.

3. The present invention has the advantages of simple equipment, small footprint, applicable to various oily ballast water treatment, and can realize automatic control.

Description of drawings

The accompanying drawing is a schematic structural view of the integrated cyclone disinfection device of the present invention.

In the figure: 1 main device, 2 motor, 3 rotating shaft, 4 impeller, 5 ultraviolet lamp, 6 oil separator, 7 outlet channel.

Detailed ways

The device is composed of a main device 1, a motor 2, a rotating shaft 3, an impeller 4, an ultraviolet lamp 5, an oil separator 6, and an outlet channel 7. The main device 1 is a rectangular anti-corrosion carbon steel structure. The impeller 4 is connected, the motor 2 drives the impeller 4 to rotate, the water flow enters from the inlet of the main device 1, a swirling flow is generated under the rotation of the impeller 4, and after passing through the ultraviolet lamp 5, it flows out from the outlet channel 7, and the oil quality of the swirling flow is Return to the cabin through the oil separator 6.

The present invention combines the advantages of cyclone, ultraviolet light and oil separator. The cyclone device is easy to operate and low in price. It can effectively remove large particles and organisms in ballast water, destroy most multicellular animals, plants and harmful pathogenic bacteria, such as eggs, larvae, spores, etc., and can also remove Silt in ballast bilges. 3 Modification of ultraviolet radiation has a good killing effect on organisms and pathogens in ballast water. The principle is that ultraviolet radiation can cause photochemical reactions in cellular nucleic acids, so that DNA cannot be replicated normally, and biological tissues cannot undergo cell division, which is critical to the life cycle. A very short period of time means that the number of organisms after treatment will be greatly reduced, and if the time is long enough, it can kill most of the organisms. 4 The integrated cyclone disinfection device has the advantages of simple equipment, small footprint, and can be applied to a variety of oily ballast water treatment, and can realize automatic control.

Claims (1)

1. An integrated cyclone disinfection device for treatment of oil-containing ballast water, characterized in that it consists of a main device (1), a motor (2), a rotating shaft (3), an impeller (4), and an ultraviolet lamp ( 5), the oil separator (6), and the outlet channel (7) form the swirl device, the ultraviolet device and the oil separator. The main device (1) is a rectangular anti-corrosion carbon steel structure, and the motor (2) passes through the shaft (3) It is connected with the modified impeller (4) in the main device (1), the motor (2) drives the impeller (4) to rotate, the water flow enters from the inlet of the main device (1), generates a swirl flow under the rotation of the impeller (4), and passes through the main body After being irradiated by the ultraviolet lamp (5) on the device (1), it flows out from the outlet channel (7), and the swirled oil flows back into the cabin through the oil separator (6) fixed on the main device (1).

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