CN109293060B - Treatment process for double-cycle utilization of offshore platform domestic sewage - Google Patents
Treatment process for double-cycle utilization of offshore platform domestic sewage Download PDFInfo
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- CN109293060B CN109293060B CN201811272373.9A CN201811272373A CN109293060B CN 109293060 B CN109293060 B CN 109293060B CN 201811272373 A CN201811272373 A CN 201811272373A CN 109293060 B CN109293060 B CN 109293060B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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Abstract
The invention provides a treatment process for double-cycle utilization of offshore platform domestic sewage, which comprises the process flows of grey water treatment, black water treatment, reclaimed water reuse, reclaimed water back-mixing treatment, replacement of recycled reclaimed water and emergency working conditions; the offshore platform domestic sewage recycling is realized, the water resource of the offshore platform is saved, zero pollution to the marine environment is realized from the source, and the increasingly strict marine environment protection requirements are met.
Description
Technical Field
The invention relates to a treatment process for double-cycle utilization of offshore platform domestic sewage.
Background
At present, the offshore platform domestic sewage treatment process generally discharges or reinjects qualified domestic sewage into stratum, and has the defect of increasing COD of marine environment. The national oceanic administration issues a notice about further strengthening the work related to the marine engineering construction project and the environmental protection of the regional construction sea planning, and clearly points out the zero-pollution measures for the key supervision and monitoring of the marine engineering construction project. In recent years, the marine functional divisions of provinces and cities have also made higher demands on marine environmental protection. Therefore, realizing 'zero pollution' of the offshore platform domestic sewage to the marine environment and marine ecology from the source is a problem to be urgently solved.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art, and provides a treatment process for double recycling of offshore platform domestic sewage, so that the cyclic utilization of the offshore platform domestic sewage is realized, the water resource of the offshore platform is saved, zero pollution to the marine environment is realized from the source, and the increasingly strict marine environment protection requirements are met.
The purpose of the invention is realized by the following technical scheme.
The invention relates to a treatment process for double-cycle utilization of offshore platform domestic sewage, which is characterized by comprising the following treatment processes: firstly, treating grey water, including pretreating oily grey water of a living building and treating oil-free grey water; secondly, pretreating the black water, namely crushing solid matters in the black water of the domestic building to enable the solid matters to enter a domestic sewage treatment device (4) for treatment; thirdly, recycling the reclaimed water, namely treating the domestic sewage into qualified reclaimed water, continuously supplying the qualified reclaimed water to a platform reclaimed water user (such as a toilet flushing use in an offshore platform living building), and enabling the generated domestic sewage to enter a grey water treatment flow again; fourthly, reclaimed water is mixed back, and after qualified reclaimed water is treated and the consumption of a reclaimed water user is removed, redundant reclaimed water is mixed back to the domestic sewage treatment device (4); and fifthly, replacing the process flows of the circulating water and the emergency working condition, in order to reduce the difficulty of domestic sewage treatment, the reclaimed water in the domestic sewage treatment device (4) needs to be updated in a mode of replacing the circulating reclaimed water, or when the domestic sewage treatment device fails and needs to temporarily contain domestic black water, receiving the incoming water from the reclaimed water recycling tank and the domestic sewage treatment device by arranging a domestic sewage recovery tank and assisting chemical agents for treatment.
The processing technology for double-cycle utilization of offshore platform domestic sewage comprises the steps of pretreating oily grey water of a domestic building and processing oil-free grey water, wherein the oily grey water of the offshore platform is introduced into an oil remover through an oily grey water pipeline, enters a grey water filter together with oil-free grey water flowing through the oil-free grey water pipeline after being processed by the oil remover, enters a drainage system through a filtered grey water pipeline in a main flow after being processed by the grey water filter, and then enters an oil gas process processing flow; the pretreatment of the black water comprises the steps of crushing solid matters in the black water of the domestic building, and enabling the solid matters to enter a domestic sewage treatment device for treatment; black water enters a crusher through a black water pipeline, and the black water after pretreatment by the crusher enters a domestic sewage treatment device for treatment; the grey water or the redundant reclaimed water filtered by the grey water filter is doped in the domestic sewage treatment device, the grey water filtered by the grey water filter is doped through a grey water pipeline, the redundant reclaimed water is doped through a reclaimed water back-doping pipeline connected with a reclaimed water pressure water tank, and the water treated by the domestic sewage treatment device reaches the index of reclaimed water reuse miscellaneous water in the water quality of urban miscellaneous water, enters the reclaimed water pressure water tank through a qualified reclaimed water pipeline, and is distributed to reclaimed water users in a platform life building; the reclaimed water recycling process comprises the steps that qualified reclaimed water treated by domestic sewage in a reclaimed water pressure water tank is supplied to a reclaimed water user of a platform through a reclaimed water pipeline to the user, and the generated domestic sewage enters the grey water treatment process again to be treated into qualified reclaimed water for recycling; the reclaimed water back-mixing treatment is carried out, after the use amount of the reclaimed water meeting the use requirement of a platform is removed, redundant reclaimed water is back-mixed to the domestic sewage treatment device through a reclaimed water back-mixing pipeline by a reclaimed water pressure water tank; in the process flow for replacing the circulating water and the process flow under the emergency working condition, in order to reduce the difficulty of domestic sewage treatment, the reclaimed water in the domestic sewage treatment device needs to be updated regularly in a mode of replacing the circulating reclaimed water, a reclaimed water back-mixing pipeline is closed during replacement, an oil-removed grey water pipeline between an oil remover and the domestic sewage treatment device is opened, and the circulating reclaimed water is replaced by the treated grey water to be used as the black water treatment mixed water; when the domestic sewage treatment device has a fault and needs to temporarily contain domestic black water, receiving the incoming water from the medium water pressure water tank through the medium water pipeline of the decontaminating water recovery tank and from the domestic sewage treatment device through the domestic sewage pipeline of the decontaminating water recovery tank by arranging the domestic sewage recovery tank, and inputting a chemical agent into the domestic sewage recovery tank through the chemical agent pipeline of the decontaminating water recovery tank to treat the domestic sewage in the domestic sewage recovery tank; the domestic sewage treated by the chemical agent is pulled back to a land domestic sewage treatment plant for treatment in a mode of supporting a ship on the sea and the like.
According to the treatment process for double-cycle utilization of the offshore platform domestic sewage, water users in the platform domestic building comprise toilet flushing and deck flushing in the platform domestic building; the term for updating the reclaimed water in the domestic sewage treatment device by replacing the recycled reclaimed water is inversely proportional to the number of people with domestic sewage, the inverse proportion rule is 120 people's domestic sewage, and the term for replacing the reclaimed water is 7 days; the fresh water pipeline is a standby pipeline, and when the amount of the fresh water is insufficient, the fresh water provides dilution water for the domestic sewage and enters the domestic sewage treatment device through the fresh water pipeline; the normal close valve is adopted in the drainage system reclaimed water pipeline, and the drainage tank in the drainage system can be temporarily used as a reclaimed water storage tank in emergency.
In the treatment process for double recycling of the domestic sewage of the offshore platform, the oil remover, the grey water filter, the crusher, the domestic sewage treatment device, the reclaimed water pressure water tank and the domestic sewage recovery tank are all existing equipment; the process and process conditions for treating the ash-containing water in the oil remover are the prior art; the process and process conditions for treating the ash-containing water treated by the oil remover and the oil-free ash water flowing through the oil-free ash water pipeline in the ash water filter are the prior art; the black water enters a crusher through a black water pipeline, and the process and process conditions of the black water after the pretreatment of the crusher are the prior art; the process and process conditions of the black water pretreated by the crusher entering a domestic sewage treatment device for treatment and the grey water or redundant reclaimed water filtered by the grey water filter entering the domestic sewage treatment device for treatment are the prior art; the chemical agent used in the chemical agent treatment process is a commercially available domestic sewage bactericide, and the chemical agent treatment process and process conditions are the prior art.
The treatment process for double-cycle utilization of the offshore platform domestic sewage has the beneficial effects that: the recycling of the domestic sewage of the offshore platform can be realized, the water resource of the offshore platform is saved, and the zero pollution of the domestic sewage of the offshore platform to the marine environment and marine ecology is realized from the source; before entering the domestic sewage treatment device, the black water is firstly subjected to crushing pretreatment, so that the black water is easier to treat after entering the next treatment process.
Drawings
FIG. 1 is a flow chart of a treatment process for double-cycle utilization of domestic sewage of an offshore platform.
The main reference numbers in the figures illustrate: 1 oil remover, 2 grey water filter, 3 crusher, 4 domestic sewage treatment device, 5 reclaimed water pressure water tank, 6 domestic sewage recovery tank, 101 oil-free grey water pipeline, 102 oil-containing grey water pipeline, 103 filtered grey water pipeline, 104 black water pipeline, 105 qualified reclaimed water pipeline for treatment, 106 reclaimed water pipeline for user, 201 fresh water pipeline, 202 oil-free grey water pipeline, 203 deoiled grey water pipeline, 204 filtered grey water pipeline, 205 reclaimed water mixing pipeline, 206 reclaimed water pipeline for drainage system, 207 reclaimed water pipeline for decontaminated water recovery tank, 208 decontaminated water recovery tank domestic sewage pipeline, 209 decontaminated water recovery tank chemical agent pipeline.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the treatment process for double-cycle utilization of the offshore platform domestic sewage comprises the following treatment processes: firstly, treating grey water, including pretreating oily grey water of a living building and treating oil-free grey water; secondly, pretreating the black water, namely crushing solid matters in the black water of the domestic building to enable the solid matters to enter a domestic sewage treatment device (4) for treatment; thirdly, recycling the reclaimed water, namely treating the domestic sewage into qualified reclaimed water, continuously supplying the qualified reclaimed water to a platform reclaimed water user (such as a toilet flushing use in an offshore platform living building), and enabling the generated domestic sewage to enter a grey water treatment flow again; fourthly, reclaimed water is mixed back, and after qualified reclaimed water is treated and the consumption of a reclaimed water user is removed, redundant reclaimed water is mixed back to the domestic sewage treatment device (4); and fifthly, replacing the process flows of the circulating water and the emergency working condition, in order to reduce the difficulty of domestic sewage treatment, the reclaimed water in the domestic sewage treatment device 4 needs to be updated in a mode of replacing the circulating reclaimed water, or when the domestic sewage treatment device fails and needs to temporarily contain domestic black water, the domestic sewage recovery tank is arranged to receive the incoming water from the reclaimed water recycling tank and the domestic sewage treatment device and is assisted with chemical agents for treatment.
As shown in fig. 1, the offshore platform domestic sewage dual-cycle utilization treatment process of the invention, wherein the grey water treatment comprises pretreatment of oily grey water of a living building and treatment of oil-free grey water, the oily grey water of the offshore platform is introduced into an oil remover 1 through an oily grey water pipeline 102, the oily grey water treated by the oil remover 1 and oil-free grey water flowing through an oil-free grey water pipeline 101 enter a grey water filter 2, and after being treated by the grey water filter 2, a main flow enters an open drainage system through a filtered grey water pipeline 103 and then enters an oil gas process treatment flow; the pretreatment of the black water comprises the steps of crushing solid matters in the black water of the domestic building, and enabling the solid matters to enter a domestic sewage treatment device 4 for treatment; black water enters the crusher 3 through the black water pipeline 104, and the black water pretreated by the crusher 3 enters the domestic sewage treatment device 4 for treatment; grey water or redundant reclaimed water filtered by the grey water filter 2 is doped into the domestic sewage treatment device 4, the grey water filtered by the grey water filter 2 is doped through a grey water pipeline 204, the redundant reclaimed water is doped through a reclaimed water back-doping pipeline 205 connected with a reclaimed water pressure water tank 5, water treated by the domestic sewage treatment device 4 reaches the index of reclaimed water and impurity water of urban miscellaneous water quality, enters the reclaimed water pressure water tank 5 through a qualified reclaimed water pipeline 105, and is distributed to reclaimed water users in a platform domestic building; in the reclaimed water recycling process, qualified reclaimed water treated by domestic sewage in the reclaimed water pressure water tank 5 is supplied to a platform reclaimed water user through a reclaimed water pipeline 106 for the user, and the generated domestic sewage enters the grey water treatment process again to be treated into qualified reclaimed water for recycling; the reclaimed water is mixed back, after the use amount of the reclaimed water meeting the use requirement of the platform is removed, redundant reclaimed water is mixed back to the domestic sewage treatment device 4 through a reclaimed water mixing back pipeline 205 by a reclaimed water pressure water tank 5; in the process flow for replacing the circulating water and the emergency working condition, in order to reduce the difficulty of domestic sewage treatment, the reclaimed water in the domestic sewage treatment device needs to be updated regularly in a mode of replacing the circulating reclaimed water, the reclaimed water back-mixing pipeline 205 is closed during replacement, the deoiled grey water pipeline 203 between the oil remover 1 and the domestic sewage treatment device 4 is opened, and the circulating reclaimed water is replaced by the treated grey water to be used as the black water treatment mixed water; when the domestic sewage treatment device 4 has a fault and needs to temporarily contain domestic black water, the domestic sewage recovery tank 6 is arranged to receive incoming water from the reclaimed water pressure water tank 5 through the reclaimed water pipeline 207 of the decontaminating water recovery tank and from the domestic sewage treatment device 4 through the domestic sewage pipeline 208 of the decontaminating water recovery tank, and chemical agents are input into the domestic sewage recovery tank 6 through the chemical agent pipeline 209 of the decontaminating water recovery tank to treat the domestic sewage in the domestic sewage recovery tank 6; the domestic sewage treated by the chemical agent is pulled back to a land domestic sewage treatment plant for treatment in a mode of supporting a ship on the sea and the like. The water user in the platform life building comprises a toilet flushing and a flushing deck in the platform life building; the term of the reclaimed water in the domestic sewage treatment device updated by replacing the circulating reclaimed water is inversely proportional to the number of people with domestic sewage, the inverse proportion rule is 120 people's domestic sewage, and the term of replacing the reclaimed water is 7 days; the fresh water pipeline is a standby pipeline, and when the amount of the fresh water is insufficient, the fresh water provides dilution water for the domestic sewage and enters the domestic sewage treatment device 4 through the fresh water pipeline 201; the normal water pipeline 206 of the drainage system adopts a normally closed valve, and a drainage tank in the drainage system can be temporarily used as a normal water storage tank in emergency. The oil remover 1, the grey water filter 2, the crusher 3, the domestic sewage treatment device 4, the reclaimed water pressure water tank 5 and the domestic sewage recovery tank 6 are all existing equipment; the process and process conditions for treating the ash-containing water in the oil remover 1 are the prior art; the process and process conditions of the ash-containing water treated by the oil remover 1 and the oil-free ash water flowing through the oil-free ash water pipeline 101 entering the ash water filter 2 for treatment are the prior art; the black water enters the crusher 3 through the black water pipeline 104, and the process and process conditions of the pretreatment of the crusher 3 are the prior art; the process and process conditions of the black water pretreated by the crusher 3 entering the domestic sewage treatment device 4 for treatment and the grey water or the redundant reclaimed water filtered by the grey water filter 2 entering the domestic sewage treatment device 4 for treatment are the prior art; the chemical agent used in the chemical agent treatment process is a commercially available domestic sewage bactericide, and the chemical agent treatment process and process conditions are the prior art.
As shown in figure 1, the embodiment of the treatment process for double-cycle utilization of the domestic sewage of the offshore platform comprises the following steps: a set of 120 life domestic sewage treatment devices is arranged on an offshore platform, black water enters the crusher 3 through the black water pipeline 104, and the black water pretreated by the crusher 3 enters the domestic sewage treatment device 4 for treatment; the grey water or the redundant reclaimed water filtered by the grey water filter 2 is doped in the domestic sewage treatment device 4, the grey water filtered by the grey water filter 2 is doped through a grey water pipeline 204, the redundant reclaimed water is doped through a reclaimed water doping pipeline 205 connected with a reclaimed water pressure water tank 5, and the water treated by the domestic sewage treatment device 4 reaches the index of reclaimed water reuse and impurity water in the quality of urban impurity water, namely the index of reclaimed water reuse and impurity water in the quality of urban impurity water for urban sewage recycling (GBT 18920-; the qualified reclaimed water pipeline 105 enters the reclaimed water pressure water tank 5 and is then distributed to reclaimed water users in the platform life building;
the oily grey water is introduced into an oil remover 1 through an oily grey water pipeline 102, the oily grey water treated by the oil remover 1 and oil-free grey water flowing through an oil-free grey water pipeline 101 enter a grey water filter 2, and after the oily grey water is treated by the grey water filter 2, a main flow enters an open-drain system through a filtered grey water pipeline 103 and then enters an oil gas process treatment flow;
the reclaimed water recycling process comprises the steps of supplying qualified reclaimed water treated by domestic sewage in the reclaimed water pressure water tank 5 to a platform reclaimed water user through a reclaimed water pipeline 106 for the user, and enabling the generated domestic sewage to enter the grey water treatment process again to be treated into qualified reclaimed water for recycling;
under normal working conditions, when redundant reclaimed water is used as a water source for back-mixing black water treatment, in order to avoid accumulation of refractory substances in domestic sewage, calculation is carried out, the treated grey water is recommended to replace circulating reclaimed water as black water treatment mixed water every 7 days, the circulating reclaimed water is discharged into a domestic sewage recovery tank and is transported back to land for treatment by a support ship and the like, two discharge pumps are used as domestic sewage delivery pumps, and 6 sets of 10m pumps are arranged3The domestic sewage recovery tank is stacked near a cargo lifting area on a lower deck, and certain anti-freezing measures are taken according to the conditions in winter. When the production system of the offshore oil and gas production facility stops production, the oil and gas production system is started and dischargedWhen the closed drainage system cannot receive the domestic grey water and the domestic sewage treatment device fails to work under emergency conditions, the volume of the domestic sewage recovery tank is calculated inversely, and the redundant reclaimed water and the domestic sewage are required to enter the domestic sewage recovery tank for 2 days and are transported to the land for treatment by a support ship and the like. And the recommended platform adopts management measures such as water conservation and the like at the moment to reduce the generation amount of domestic sewage.
The normal close valve is used in the drainage system water pipe 206, and the drainage tank (not shown) in the drainage system can be temporarily used as the water storage tank of the reclaimed water in emergency. For example, when the offshore platform production system is in emergency shutdown, the domestic sewage system is in normal operation, and a support ship for transporting the domestic sewage recovery tank cannot be sailed due to uncertain factors such as weather, the qualified reclaimed water can be treated by using the discharge tank in the discharge system as a temporary reclaimed water storage tank through the pipeline 206.
The content that will not be described in this embodiment is the prior art, and therefore, will not be described again.
The foregoing is a preferred embodiment of the present invention, and is not intended to limit the invention in any way, and all simple modifications, equivalent variations and modifications made to the foregoing embodiment according to the technical spirit of the present invention are still within the technical scope of the present invention.
Claims (3)
1. A treatment process for double-cycle utilization of offshore platform domestic sewage is characterized by comprising the following treatment processes:
firstly, treating grey water, including pretreating oily grey water of a living building and treating oil-free grey water;
secondly, pretreating the black water, namely crushing solid matters in the black water of the domestic building to enable the solid matters to enter a domestic sewage treatment device (4) for treatment;
thirdly, recycling the reclaimed water, namely treating the domestic sewage into qualified reclaimed water, continuously supplying the qualified reclaimed water to a reclaimed water user in the platform domestic building, and introducing the generated domestic sewage into the grey water treatment process again;
fourthly, the reclaimed water is mixed back, and after the qualified reclaimed water is treated and the use amount of the reclaimed water in the platform life building is removed, the redundant reclaimed water is mixed back to the domestic sewage treatment device (4);
replacing process flows of water in circulation and under emergency working conditions, in order to reduce the difficulty of domestic sewage treatment, the reclaimed water in the domestic sewage treatment device (4) needs to be updated in a mode of replacing the recycled reclaimed water, and when the domestic sewage treatment device fails and needs to temporarily contain domestic black water, the domestic sewage recovery tank is arranged to receive the incoming water from the reclaimed water pressure water tank and the domestic sewage treatment device and is assisted with chemical agents for treatment;
the grey water treatment comprises pretreatment of oily grey water of a living building and treatment of oil-free grey water, wherein oily grey water of an offshore platform is introduced into an oil eliminator (1) through an oily grey water pipeline (102), the oily grey water treated by the oil eliminator (1) and oil-free grey water flowing through an oil-free grey water pipeline (101) enter a grey water filter (2), a main flow enters an open drainage system through a filtered grey water pipeline (103) after being treated by a grey water filter (2), and then the oily grey water enters an oil gas process treatment flow;
the pretreatment of the black water comprises the steps of crushing solid matters in the black water of the domestic building, and enabling the solid matters to enter a domestic sewage treatment device (4) for treatment; black water enters the crusher (3) through the black water pipeline (104), and the black water pretreated by the crusher (3) enters the domestic sewage treatment device (4) for treatment; grey water or redundant reclaimed water filtered by the grey water filter (2) is doped into the domestic sewage treatment device (4), the grey water filtered by the grey water filter (2) is doped through a grey water pipeline (204) after filtration, the redundant reclaimed water is doped through a reclaimed water back-doping pipeline (205) connected with a reclaimed water pressure water tank (5), water treated by the domestic sewage treatment device (4) reaches the index of reclaimed water reuse and impurity water in urban miscellaneous water quality, enters the reclaimed water pressure water tank (5) through a qualified reclaimed water pipeline (105), and is distributed to reclaimed water users in a platform domestic building;
the reclaimed water is recycled, qualified reclaimed water treated by the domestic sewage in the reclaimed water pressure water tank (5) is supplied to a reclaimed water user in the platform domestic building through a reclaimed water pipeline (106) for the user, and the generated domestic sewage enters the grey water treatment process again to be treated into qualified reclaimed water for recycling;
the reclaimed water is mixed back, after the use amount of the reclaimed water in the platform life building is removed, redundant reclaimed water is mixed back to the domestic sewage treatment device (4) through a reclaimed water mixing back pipeline (205) by a reclaimed water pressure water tank (5);
in order to reduce the difficulty of domestic sewage treatment, the process flow under the water-in-circulation and emergency working conditions needs to regularly replace reclaimed water in the domestic sewage treatment device by replacing the recycled reclaimed water, a reclaimed water back-mixing pipeline (205) is closed during replacement, an oil-removed grey water pipeline (203) between an oil remover (1) and the domestic sewage treatment device (4) is opened, and the recycled reclaimed water is replaced by the treated grey water to be used as black water treatment mixed water;
when the domestic sewage treatment device (4) breaks down and needs to temporarily contain domestic black water, the domestic sewage treatment device receives incoming water from the medium water pressure water tank (5) through the medium water pipeline (207) of the sewage treatment device (4) through the sewage treatment tank and from the domestic sewage treatment device (4) through the sewage treatment tank and the domestic sewage pipeline (208), and chemical agents are input into the domestic sewage treatment tank (6) through the chemical agent pipeline (209) of the sewage treatment tank to treat the domestic sewage in the domestic sewage treatment tank (6); the domestic sewage treated by the chemical agent is pulled back to a land domestic sewage treatment plant for treatment in a mode of an offshore supporting ship.
2. The offshore platform domestic sewage double-recycling treatment process according to claim 1,
the water user in the platform life building comprises a toilet flushing and a flushing deck in the platform life building;
the term of replacing the reclaimed water in the domestic sewage treatment device by replacing the circulating reclaimed water is inversely proportional to the number of people with domestic sewage, the inverse proportion rule is 120 people's domestic sewage, and the term of replacing the reclaimed water is 7 days;
the fresh water pipeline is a standby pipeline, and when the amount of the fresh water is insufficient, the fresh water provides dilution water for the domestic sewage and enters the domestic sewage treatment device (4) through the fresh water pipeline (201);
a normal close valve is adopted in a reclaimed water pipeline (206) of the discharge system, and a discharge tank in the discharge system is temporarily used as a reclaimed water storage tank in emergency.
3. The offshore platform domestic sewage double-recycling treatment process according to claim 1, wherein the oil remover (1), the grey water filter (2), the crusher (3), the domestic sewage treatment device (4), the reclaimed water pressure water tank (5) and the domestic sewage recovery tank (6) are all existing equipment;
the process and process conditions for treating the oily grey water in the oil remover (1) are the prior art;
the process and process conditions of the oily grey water treated by the oil remover (1) and the oil-free grey water flowing through the oil-free grey water pipeline (101) entering the grey water filter (2) for treatment are the prior art;
the black water enters the crusher (3) through the black water pipeline (104), and the process and process conditions of pretreatment through the crusher (3) are the prior art;
the process and the process conditions that the black water pretreated by the crusher (3) enters a domestic sewage treatment device (4) for treatment and the grey water or the redundant reclaimed water filtered by the grey water filter (2) enters the domestic sewage treatment device (4) for treatment are the prior art;
the chemical agent used in the chemical agent treatment process is a commercially available domestic sewage bactericide, and the chemical agent treatment process and process conditions are the prior art.
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| CN103193361A (en) * | 2013-03-18 | 2013-07-10 | 哈尔滨工程大学 | Advanced treatment, regeneration and reuse device and method of domestic sewage from ships |
| CN104291503A (en) * | 2014-09-18 | 2015-01-21 | 中国海洋石油总公司 | Electrocatalytic oxidation treatment method and treatment system for sanitary sewage of marine platform |
| CN204689832U (en) * | 2015-05-08 | 2015-10-07 | 丁耀华 | A kind of naval vessel sanitary sewage disposal and intermediate water reuse system |
| CN105236685A (en) * | 2015-10-28 | 2016-01-13 | 中国海洋石油总公司 | Zero-discharge treatment method for offshore-platform domestic sewage |
| CN105936565A (en) * | 2015-12-30 | 2016-09-14 | 深圳市锦润防务科技有限公司 | Ash sluicing water treatment and recycled water reuse system for ships |
| CN205635269U (en) * | 2016-05-13 | 2016-10-12 | 利丰海洋工程（深圳）有限公司 | Ocean sewage treatment device |
| CN106430821A (en) * | 2016-09-30 | 2017-02-22 | 哈尔滨工程大学 | Ship black water and ash water treatment device and method |
| CN106746069A (en) * | 2016-12-01 | 2017-05-31 | 中海油能源发展股份有限公司安全环保分公司 | A kind of Domestic sewage integrated treatment unit |
| CN206751620U (en) * | 2017-05-21 | 2017-12-15 | 青岛亚通达铁路设备有限公司 | A kind of integrated Domestic sewage collecting and processing system |
| CN207468394U (en) * | 2017-06-27 | 2018-06-08 | 深圳文科园林股份有限公司 | A kind of black, buck shunting sanitary sewage disposal and reutilizing system apparatus |
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