Seawater desalination system for large-sized oceangoing freighter

Abstract

The invention discloses a seawater desalination system for a large-sized oceangoing freighter. The system comprises a subsea valve, one end of the subsea valve is fixedly connected with a first high-pressure pump, the top of the first high-pressure pump is connected with one end of a first conveying pipe in an embedded manner, the other end of the first conveying pipe is connected with a sand filter in an embedded manner, a lower surface of the sand filter is provided with a first storage box, one side of the top of the sand filter is fixedly connected with one end of a second conveying pipe,and the other end of the second conveying pipe is connected with a carbon filter in an embedded manner. By an ultraviolet light sterilizer, killing treatment can be performed on harmful germs in seawater; by a backlash pipe, pure water in a pure water tank can be introduced into the sand filter, the carbon filter and a water softening device again in batches, washing treatment can be carried out on a filter screen and a filter membrane, and then the normal service lives of the sand filter, the carbon filter and the water softening device can be prolonged on the premise of not disassembling thesand filter, the carbon filter and the water softening device.

Description

technical field [0001] The invention relates to the field of seawater desalination, in particular to a seawater desalination system for large ocean-going cargo ships. Background technique [0002] Desalination of seawater is a process in which seawater is desalinated using the principle of reverse osmosis, and then fresh water can be produced. Seawater desalination needs to be completed with the help of a seawater desalination system. Due to the long transportation cycle of large ocean-going cargo ships, it will take a long time to leave the port and cannot be replenished in time. The phenomenon of drinking water, therefore, seawater desalination systems are widely used in the technology of replenishing fresh water for large ocean-going cargo ships. [0003] However, the existing seawater desalination system is not only complex in structure, but also has a single function, which is not suitable for the normal use of large ocean-going cargo ships. Currently, the commonly used...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a seawater desalination system for large ocean-going cargo ships, which can effectively solve the seawater desalination system in the background technology. The normal use of the seawater desalination system commonly used at present is mostly integrated. When taking seawater, it is necessary to rely on the seabed valve located at the bottom of the ocean-going cargo ship’s cabin, so that this form of seawater desalination system will be due to the narrowness of the cabin door of the ocean-going cargo ship. However, the inside of the engine room cannot be successfully entered, which reduces the practical performance of the seawater desalination system; there are a large number of harmful bacteria in the seawater, and because the seawater desalination system lacks an ultraviolet sterilizer, the crew members drink the seawater treated by the system. Diseases, such as diarrhea, etc., damage the health of the crew. With the increase of the use time of the seawater desalination system, a large number of clogs are attached to the filter screen and the surface of the filter membrane in the seawater desalination system. Since the seawater desalination system cannot achieve recoil The purpose of the filter and the filter membrane makes the desalination efficiency of the seawater desalination system decrease, and the desalination effect is not good.

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