Main Functions

MGPS is a system that effectively kills sea life and protects the seafloor gate and seawater pipe from excessive adsorption by sea life. The system is usually installed at the seabed gate and consists of electrodes made of copper and aluminium. The working principle is to use the toxic substance Cu2O and floc carrier Al(OH)3 produced by electrolysis to attach to the inner wall of the seafloor door and seawater pipe, effectively inhibiting the habitat and growth of marine organisms.

The Basic Principle of Electrolytic Copper/Aluminium (Iron) MGPS

Through the electrolysis of copper anode in seawater, trace copper ions are generated, and a small amount of aluminium hydroxide or iron hydroxide flocs are generated by the electrolysis of aluminium or iron anode. When seawater passes through the system with these highly viscous copper and aluminium flocs, the flocs spread out and stick to the slower area of seawater where seawater larvae may live, and with the prolongation of electrolysis, these flocs attach to the inner wall of the seawater pipeline system, thus forming a floc in the whole system. As the electrolysis time increases, these flocs adhere to the inner wall of the seawater pipe system, thus forming a very thin protective layer in the whole system, thus preventing the double effects of seaweed adhesion and seawater corrosion. According to the results of experimental research, when the content of copper ions in seawater reaches 2μg/L (2mg/m3), copper ions can effectively inhibit the growth of marine organisms in the seawater pipe system. If the seawater pipe system is made of steel, aluminium anodes should be used. If the seawater pipe system is made of aluminium or copper, then iron anodes should be used. Therefore, depending on the material of the seawater pipe system, the correct choice of anode must be made.

Applications

In order to supply water for seawater cooling or desalination systems, seawater is pumped through submarine gates. In order to prevent the pollution caused by the attachment of marine organisms, copper electrodes (CU) and aluminium electrodes (AL) are installed at the entrance of the seawater gate to prevent the corrosion of the hull and pipelines. The main principle of this antifouling and anticorrosion device is to make the electrodes metal-ionised and to flow a small electric current to the hull of the ship to produce a very small amount of hypohalite acid through the electrolysis of seawater.