Ocean vessel ballast water treatment barge for port operation

Abstract

The invention discloses an ocean vessel ballast water treatment barge for port operation and belongs to the technical field of ocean biologics and environmental protection. On the basis of technical advantages that ballast water marine organisms can be rapidly killed through high-concentration activated oxygen together with a hydrodynamic cavitation high-grade oxidation technique, an integral ballast water high-grade oxidation treatment system is combined with a ballast water centering treatment vessel. By adopting the barge, concise, safe and efficient centering treatment on ballast water discharged from ocean vessels in port operation can be achieved. The barge does not affect port operation of vessels and is not limited by vessel shapes, a vessel does not need to be equipped with a special ballast water connector, a novel ballast water treatment device can be provided for a port operation vessel which is not equipped with a vessel ballast water treatment device, or a vessel which isalready equipped with the vessel ballast water treatment device, but the treatment effect cannot meet the IMO (International Meteorological Organization) ballast water discharge standards, and noveltechnical insurance means can be provided for reducing invasion risks of non-indigenous ocean organisms in ballast water, and preventing serious ocean non-indigenous organism invasion disasters.

Description

technical field [0001] The invention belongs to the technical field of marine ecology and environmental protection, and relates to a treatment device for preventing and controlling the intrusion of marine alien organisms boarding the ballast water of ocean-going ships, in particular to a ballast water treatment barge for ocean-going ships used for port operations. Background technique [0002] The invasion of marine alien organisms in the ballast water of ocean-going ships is one of the major marine ecological and environmental problems that need to be addressed globally. The International Maritime Organization (IMO) formulated the International Ship Ballast Water and Sediment The Convention on Management and Control came into effect on September 8, 2017, requiring all ocean-going shipping vessels calling at international ports to manage and control ballast water, remove, make harmless or avoid discharging ballast water or sediments. Harmful aquatic organisms and pathogens. ...

AI Technical Summary

Problems solved by technology

Among them, filtration is the most common treatment process among various combination methods. The filtration method can effectively filter large-scale particulate matter or organisms, but the treatment effect on marine organisms with too small scale and strong penetrating ability is poor, and the volume is large. It takes up a lot of space on the ship, poor applicability in sea areas, and is easy to block when the turbidity is high. At the same time, the backwash water of the filter device is directly discharged into the sea, which will cause new pollution. These are the universality of the ballast water treatment and filtration process. Problem: The electrolysis method mainly relies on the electrolysis of seawater to produce chlorine, hypochlorous acid, sodium hypochlorite, etc. to oxidize and decompose the biological enzymes in the microorganisms to cause them to fail, or to act on the cell walls of microorganisms to increase their permeability, resulting in cell death due to cytoplasmic outflow , but the residual chlorine will corrode the metal on the ship and cause secondary pollution of the discharge environment around the ballast water, and chlorine gas will be produced after the reaction, and the problem of chlorine gas discharge is more complicated; the ultraviolet method mainly uses ultraviolet radiation to make DNA or RNA in microbial cells The base pairs in the base pair produce a photochemical reaction, form a chemical dimerization, prevent the replication of the DNA or RNA chain during cell division, and thus have the effect of inactivation, but the power consumption is high, the seawater quality is high, and the seawater turbidity increase, it will significantly reduce the effect of ultraviolet on microorganisms; the chemical method is mainly through the use of chemical reagents, such as chlorine or chloride, ozone (O 3 ), hydrogen peroxide (H 2 o 2 ), etc., chemically react with natural organic matter in seawater to change the composition of ballast water to create a harmful bacteria and microbial inhibition environment in ballast water for ballast water treatment, but there is a large demand for chemical reagents and high storage costs , unsafe storage and other issues, it will also cause secondary pollution and corrosion of hulls, pipelines, pumps, etc.; the advanced oxidation technology is based on the generation of hydroxyl radicals ( OH) as the core, which is an improvement based on the traditional chemical oxidation method New Oxidation Technology

The OH reaction speed is extremely fast, and the reaction rate constant is as high as 10 9 m -1 S -1 , can complete the entire chemical reaction process in a few seconds, can quickly kill bacteria and algae, and degrade natural organic matter in seawater at the same time, without pollution. It is currently the most promising method for treating ship ballast water, but there are still OH produced Difficulty, limited processing capacity, complicated operation, etc.

[0004] Although the global research on ballast water treatment technology and devices has made great progress, due to the extremely complex global marine environment, the sea water quality and marine biological conditions in the sea areas of various ports vary greatly, and the distribution of global ocean routes is extremely extensive. Therefore, as of At present, there is no on-line ballast water treatment technology, method and device that can meet the ballast water discharge standards stipulated in the IMO Convention in any sea area and under any circumstances.

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