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Treatment system and treatment method for marine domestic sewage

A technology for treating system and domestic sewage, which is applied in the field of water treatment, can solve the problems of not being able to balance system stability and effluent water quality at the same time, and achieve the effect of high reliability, small maintenance workload and good system stability

Inactive Publication Date: 2014-04-30
CHINA NAT OFFSHORE OIL CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the defect that the system stability and effluent quality cannot be taken into account in the existing domestic sewage treatment at sea, an object of the present invention is to provide a treatment system for domestic sewage at sea

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  • Treatment system and treatment method for marine domestic sewage
  • Treatment system and treatment method for marine domestic sewage
  • Treatment system and treatment method for marine domestic sewage

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Embodiment Construction

[0027] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions of the exemplary embodiments of the present invention will be further described below.

[0028] One aspect of the present invention provides a treatment system for marine domestic sewage, such as figure 1 As shown, it includes a regulating tank 1 and a membrane treatment tank 2, wherein the regulating tank 1 is connected with a marine sewage inlet pipeline 3, an electrolysis device 4 is arranged in the regulating tank 1, and the regulating tank 1 is also connected with seawater for supplying seawater The water inlet pipeline 5 and the regulating tank 1 are used for electrolytic treatment of the domestic sewage at sea. Membrane treatment tank 2 is connected with a clear water outlet pipeline 6 for discharging treated clean water. One or more sets of MBR membrane modules 7 are arranged in membrane treatment tank 2. For filtration treatment, the membr...

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Abstract

The invention provides a treatment system for marine domestic sewage. The treatment system comprises a regulating pool and a membrane treatment pool, wherein the regulating pool is connected with a marine domestic sewage inlet pipeline and a seawater inlet pipeline; an electrolysis device is arranged in the regulating pool; the membrane treatment pool is connected with a clear water outlet pipeline; an MBR membrane module is arranged in the membrane treatment pool; the membrane treatment pool is connected with the regulating pool through a regulating pool water outlet pipeline. The invention further provides a treatment method for the marine domestic sewage. The treatment system combines the electrolysis method with the membrane separation method, so that the system has good stability, high reliability and small size, and can be widely applied to marine platforms and ships. The treatment method can effectively treat the marine domestic sewage; the operation of the system is stable; the effluent quality is obviously better than the water quality treated by the electrolysis method; the maintenance workload is small.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a treatment system for marine domestic sewage and a treatment method for water treatment using the treatment system. Background technique [0002] At present, the environmental protection requirements for offshore oilfield development and ship operation are getting higher and higher, especially for domestic sewage treatment. In the past, only the control of harmful bacteria (E. coli) was required, and there was no requirement for COD (chemical oxygen demand). However, with the increasing pressure of environmental protection, the State Oceanic Administration has now required that the discharge of domestic sewage from offshore production platforms and ships must consider the COD index. [0003] At present, there are two main technologies for the treatment of domestic sewage on offshore platforms and ships: membrane biological separation technology (MBR) and electrolysis. Membrane bi...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/461
Inventor 李祎阎洪涛朱卫城邓长红王建丰管虹翔李玉斌戈仁刚雷亚飞姚爽
Owner CHINA NAT OFFSHORE OIL CORP
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