Discharge system for domestic sewage of saturation diving habitat under large depth

Abstract

The invention relates to a discharge system for domestic sewage of a saturation diving habitat under a large depth. A sewage discharge tank is arranged below the habitat, an electrical control cabinetcontrols an upper automatic switching valve, a lower automatic switching valve, an exchanging pipeline automatic switching valve, a gas inlet valve and a gas discharge valve, and meanwhile, the discharge system is also provided with a diving helium recycling system and a saturation diving air source system. Through the arrangement of the saturation diving air source system, the sewage discharge tank and the habitat are commonly pressurized, and through the linkage design of a toilet lid and the upper electric switching valve, risks of personal injury brought by maloperation under a high-pressure condition are avoided. The matched diving helium recycling system is adopted for recycling, then the loss of diving gas is lowered, the electrical control cabinet provides stable and reliable valve on-off control and liquid level monitoring, and stacking of harmful gas and overflow of sewage are prevented. An air purification device can assist in removing harmful and undesirable odor generatedfrom excrement, and the air environment in the habitat is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment equipment, in particular to a domestic sewage discharge system for a large-depth saturated submersible living cabin. Background technique [0002] Nowadays, there are only two kinds of diving techniques for humans to directly dive into the sea to engage in various operations, namely conventional diving and saturation diving. Conventional diving is also called air diving. The safe depth of this type of diving divers does not exceed 60 meters, and the working time is short, so they cannot perform continuous, heavy and long-term large-scale underwater operations. Saturation diving means that divers are exposed to high pressure environment for a long time, so that the gas in each tissue in the body is completely saturated. On this basis, as long as the ambient pressure does not change, no matter how long the exposure time is, the decompression time is equal. of. [0003] The saturation divi...

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Problems solved by technology

[0004] Among them, the living cabin is an important living place for divers, and divers can live in it for dozens of days. During this period, divers’ daily activities such as showering, washing, and flushing toilets will generate a large amount of domestic sewage, and the living cabin needs to maintain a high environmental pressure continuously. In this case, how to ensure that the daily sewage of the divers in the cabin can be discharged out of the cabin in a safe and timely manner is a major problem. In particular, when carrying out deep saturation diving, such as 1000 meters, the pressure in the living cabin can reach 10MPa. The discharge of daily sewage becomes difficult to deal with

At present, there is no saturated diving cabin sewage treatment system that can work at large depths in the world, making the sewage treatment of saturated diving cabins a thorny issue

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