Wastewater treatment equipment and method for ship

Abstract

The invention provides a novel wastewater treatment device, aiming to solve the problem of domestic wastewater treatment of the traditional ship and aiming to the special requirements on the ship. The device integrates coarse filtration, anaerobic biological treatment, fine filtration and aerobic biological treatment into a whole and adopts an embedded membrane filtering technology. A depositing chamber is internally provided with a coarse filter, and the coarse filter can automatically carry out ventilation washing according to the preset time to prevent blockage without artificial cleaning. Water is output through coarse filtration and enters a baffling chamber, an organic matter is further precipitated and degraded, output water thereof flows into a regulation chamber, and water inflow and uneven water quantity are automatically regulated through the regulation chamber. Output water of the regulation chamber is pumped into an external fine filter through a pump, filtered wastewater enters a membrane bioreactor, and the wastewater which accords with a drainage standard is drained after treatment. The wastewater treatment equipment and the method for the ship ensure that wastewater treatment reaches a new national drainage standard; and the equipment satisfies the requirements for low energy consumption and easy maintenance and cleaning.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to a marine sewage treatment equipment and method. Background technique [0002] Marine sewage treatment equipment is an auxiliary equipment for ships. The equipment undertakes the treatment of domestic sewage on board the ship to make it meet the discharge standard. [0003] In the 21st century, with the development of the world economy, the volume of international trade transactions is also increasing, and there are more and more cargo ships, passenger ships, and cruise ships. While promoting economic development, the pollution caused by ships to the water environment is also increasing. Countries all over the world attach great importance to marine ecological protection. In recent years, countries around the world have continuously strengthened their awareness of marine protection, especially for the protection of territorial waters and inland rivers. The International Maritime Or...

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Problems solved by technology

[0004] my country's ship sewage treatment equipment still uses the process of crushing, dosing treatment and discharge or black water biological treatment and mixing with gray water to sterilize and discharge. The patent number is "ZL02108065", and the patent name is "Sewage Treatment Equipment". The disclosed sewage treatment equipment used in ships consists of an air chamber, a sedimentation chamber, a disinfection chamber and a storage container (such as figure 1 As shown), due to the limitations of its technical equipment, it is difficult to meet the current standard requirements for sewage treatment indicators, let alone meet the new discharge standards; the patent application number is "200710064736.5", and the patent name is "An external "Membrane bioreactor system and its method for treating sewage" Chinese invention patent application discloses a sewage treatment device with an external membrane bioreactor system. The device uses external membrane filtration. Although it is easy to maintain, it consumes a lot of energy , frequent cleaning may cause secondary pollution, and at the same time, due to the shearing action of the circulating pump, the activity of biological treatment is reduced, and the structure is large in size, which is not suitable for use in the limited space of the ship; the patent application number is "200810111976.0 ", the Chinese invention patent application titled "a sewage treatment device and process", discloses a sewage treatment device and a sewage treatment method using a membrane bioreactor process (such as figure 2 shown), but this device and method cannot meet the requirements of marine sewage treatment, and it is difficult to treat sewage to meet the new discharge standards, and the setting of its built-in membrane is not conducive to the maintenance of sewage treatment devices on board. To meet the requirements of the new discharge standards, storage containers need to be added to store the treated sewage, which can only be discharged in sea areas where discharge is allowed, occupying the space of the ship and increasing the load of the ship

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