Ship ballast water treatment system based on electro-catalysis and membrane distillation integrated device

Abstract

The invention discloses a ship ballast water treatment system based on an electro-catalysis and membrane distillation integrated device. The ship ballast water treatment system comprises a ship engine cooling pool, and a hot side heating device, a hot side water tank, an electro-catalysis and membrane distillation reactor, a cold side water tank and a penetrating fluid cooling system which are sequentially connected through pipelines. The system further comprises a direct-current power supply used for supplying power to the electro-catalysis and membrane distillation reactor, and a clean water storage tank is connected with the cold side water tank. According to the ship ballast water treatment system, an electrocatalytic oxidation technology and a membrane distillation process are scientifically coupled into an integrated ship ballast water treatment device by adopting a submerged reaction tank method, and the system has the advantages of high organic matter degradation efficiency, high ammonia nitrogen removal rate, high desalination efficiency, good effluent quality, effective alleviation of membrane distillation membrane pollution / membrane wetting, prolonged service life of the distillation membrane, realization of ship ballast water source treatment and reuse, effective solving of ship part fresh water demands, and mitigation of port sewage and wastewater treatment pressure.

Description

technical field [0001] The invention relates to the field of ship ballast water treatment systems, in particular to a ship ballast water treatment system based on an electrocatalytic membrane distillation integrated device. Background technique [0002] The indiscriminate discharge of untreated or substandardly treated ballast water from ships has been identified by the Global Environment Fund as one of the four major threats to the ocean. The Ballast Water Convention formulated by the International Maritime Organization came into effect in 2017. The Convention requires all ships to install a certified ballast water management system (BWMS) before entering the ports of the IMO member states. Ship ballast water is a kind of high-salt oily wastewater. The existing BWMS system is mainly designed and applied for biological inactivation treatment of bacteria in ballast water, ignoring the standard treatment of oil, toxic and harmful organic substances and other pollutants. Due t...

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Problems solved by technology

[0004] Ship ballast water is essentially a kind of high-salt oily wastewater. Membrane distillation technology has unique advantages and significant application potential in ballast water treatment. / Limited by the characteristic of easy wetting, the water quality of high-salt oily wastewater is complex, containing a large amount of surfactants, salts and oily substances. Surfactants may have a wetting effect on membrane materials, and salty substances will cause severe distillation membranes. Oily substances will adhere to the surface of the hydrophobic membrane through hydrophobic-hydrophobic interaction to cause membrane fouling

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