CN113582413A - Discharge treatment device and process for petrochemical industry output wastewater - Google Patents
Discharge treatment device and process for petrochemical industry output wastewater Download PDFInfo
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- CN113582413A CN113582413A CN202110967401.4A CN202110967401A CN113582413A CN 113582413 A CN113582413 A CN 113582413A CN 202110967401 A CN202110967401 A CN 202110967401A CN 113582413 A CN113582413 A CN 113582413A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 90
- 208000028659 discharge Diseases 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 141
- 238000011268 retreatment Methods 0.000 claims abstract description 23
- 238000000926 separation method Methods 0.000 claims description 52
- 238000001179 sorption measurement Methods 0.000 claims description 44
- 238000012958 reprocessing Methods 0.000 claims description 43
- 238000004659 sterilization and disinfection Methods 0.000 claims description 32
- 238000005868 electrolysis reaction Methods 0.000 claims description 23
- 239000002893 slag Substances 0.000 claims description 22
- 238000007667 floating Methods 0.000 claims description 18
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 9
- 238000005188 flotation Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 5
- 238000007790 scraping Methods 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims 4
- 238000010079 rubber tapping Methods 0.000 claims 3
- 239000003921 oil Substances 0.000 description 87
- 238000007599 discharging Methods 0.000 description 9
- 230000001954 sterilising effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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Abstract
The invention provides a discharge treatment device and a process for petrochemical industry output wastewater, wherein the device comprises an oil removal unit, a pretreatment unit, a retreatment unit and a tail unit which are sequentially connected; the method comprises the following steps: sequentially treating the petrochemical industry output wastewater by using an oil removal unit, a pretreatment unit, a retreatment unit and a tail unit; the invention can effectively ensure the quality of the effluent to stably reach the standard by utilizing the oil removing unit and the retreatment unit with special structures to treat the petrochemical wastewater with great water quality and water quantity fluctuation.
Description
Technical Field
The invention relates to the technical field of petrochemical wastewater treatment, in particular to a device and a process for discharging and treating petrochemical produced wastewater.
Background
The petrochemical industry output wastewater refers to wastewater generated in petrochemical industry production.
The petroleum refining process is to fractionate crude oil into different petroleum products according to different boiling points through physical separation or chemical reaction process, and water injection, steam stripping, condensation, water washing, oil tank water cutting and the like in the oil refining process are all main sources for generating wastewater, and the wastewater is also from auxiliary facilities such as laboratories, power stations, air compression stations, circulating water farms and the like, and living facilities such as canteens, offices and the like.
Because the components of the wastewater are complex, the properties of the wastewater are complex and changeable due to the complex petrochemical products, complex reaction process and unit operation; the waste water has high content of organic matters, especially hydrocarbons and derivatives thereof, and contains various heavy metals. The petrochemical wastewater has various sources and different components and is closely related to the production flow, so the water quality and the water quantity of the wastewater are difficult to determine.
In the traditional technology, the petrochemical industry produced wastewater is treated by using an oil separation-air flotation-biochemical mode. Because the petrochemical industry output wastewater contains a small amount of oil pollutants which are difficult to be biodegraded, the pollutants which are difficult to be biodegraded in the wastewater need to be removed during the biochemical treatment of the wastewater, and then the wastewater can be better treated.
However, with the gradual increase of the processing amount of crude oil, the traditional process is difficult to deal with a large amount of petrochemical production wastewater during oil separation treatment, and the problem of insufficient oil separation is easily caused during actual operation, so that subsequent biochemical treatment is seriously influenced, and the whole process is difficult to meet the current wastewater discharge standard.
Disclosure of Invention
Aiming at the existing problems, the invention provides a device and a process for discharging and treating petrochemical industry output wastewater.
The technical scheme of the invention is as follows: the utility model provides a discharge treatment device for petrochemical output waste water, includes the deoiling unit that is used for carrying out the deoiling to petrochemical output waste water and handles, with the deoiling unit be connected and be used for carrying out the preliminary treatment unit in petrochemical output waste water after the deoiling, with the preliminary treatment unit be connected and be used for carrying out the retreatment unit of retreatment to petrochemical output waste water after the preliminary treatment and with the retreatment unit be connected and be used for carrying out the tail unit of aftertreatment to petrochemical output waste water after the retreatment;
the oil removing unit comprises a collecting tank and an oil removing unit arranged on the collecting tank by using an installation unit; the oil removing unit adopts intelligent oil removing equipment, and the intelligent oil removing equipment comprises detection equipment which is arranged in the water collecting tank and is used for detecting the height of wastewater and the height of an oil surface and separation equipment which is arranged in the water collecting tank and is used for separating floating oil at the upper end of the wastewater;
the separation equipment comprises a separation shell, an oil inlet valve and a water inlet valve, wherein the oil inlet valve and the water inlet valve are arranged in the separation shell; the separation shell is arranged in the water collecting tank through the mounting unit and divides the water collecting tank into a left cavity and a right cavity;
an oil inlet is formed in the position, close to the upper end, of the side wall of the left cavity of the separation shell, and a wastewater through hole which penetrates through the separation shell and is communicated with the left cavity and the right cavity at two ports is formed in the bottom of the separation shell;
an oil outlet cavity communicated with the oil inlet is formed in the separating shell;
the oil inlet valve is arranged in the separation shell and used for controlling the opening/closing of the oil inlet; the water inlet valve is arranged in the separation shell and used for controlling the opening/closing of the waste water port;
the detection equipment comprises an oil surface sensing connecting rod and a water surface sensing connecting rod which are arranged in the left cavity in parallel, an oil surface floating ball and a water surface floating ball which are respectively movably sleeved on the sensing connecting rod and the water surface sensing connecting rod, and a signal receiving module connected with the sensing connecting rod and the water surface sensing connecting rod;
the pretreatment unit comprises a pretreatment shell, an electrolysis unit, an air flotation unit and a water inlet unit, wherein the electrolysis unit, the air flotation unit and the water inlet unit are positioned in the pretreatment shell, and the water inlet unit is used for feeding water into the pretreatment shell.
Further, the electrolysis unit comprises an electrolysis cylinder which is arranged inside the pretreatment shell and is coaxial with the pretreatment shell, and an electrode group which is arranged inside the electrolysis cylinder; the water inlet unit comprises a water inlet pipe which penetrates through the upper end of the pretreatment shell and extends into the electrolytic cylinder and a dispersion disc which is arranged on the water outlet end of the water inlet pipe; the electrode group is positioned at the upper end of the dispersion disc; the electrolytic cylinder and the pretreatment shell are coaxially arranged, so that the inlet water can be uniformly distributed on the electrode group for electrolytic treatment, and the separation efficiency can be effectively improved after the electrolytic treatment.
Furthermore, the air floatation unit comprises a reducing funnel arranged at the upper end of the electrolytic cylinder, a dissolved air pipeline arranged on the side wall of the pretreatment shell and positioned right above the reducing funnel, and a slag discharging groove arranged on the side wall of the pretreatment shell; the dissolved air pipeline is connected with an external micro-bubble generator; the reducing funnel can effectively increase the contact area of water and gas, and can effectively improve the separation efficiency
Furthermore, the slag notch is including installing the slag notch body on the preliminary treatment casing lateral wall and the cover establish in the slag notch and the upper end extends to the inside hourglass sediment funnel of preliminary treatment casing.
Further, the reprocessing unit comprises a reprocessing shell and a plurality of sets of reprocessing modules arranged inside the reprocessing shell; sub-cavities corresponding to the number of the reprocessing modules are uniformly arranged in sequence from the water inlet end to the water outlet end of the reprocessing shell, and two adjacent sub-cavities are connected end to end;
the upper end of each sub-cavity is provided with a water outlet module; the lower ends of two adjacent sub-cavities are communicated, and an electromagnetic valve is arranged at the communicated position;
the reprocessing module comprises a membrane module arranged in the sub-cavity and an aeration module arranged in the membrane module.
Further, the tail unit comprises an effluent retention pool and mud scraping equipment arranged inside the effluent retention pool; the water retention tank is used for temporarily storing the treated wastewater, and discharging the supernatant after the wastewater is precipitated.
Furthermore, an adsorption disinfection device is arranged at the joint of the reprocessing unit and the tail unit; the wastewater can be further deeply treated by using the adsorption disinfection equipment.
Furthermore, the adsorption disinfection equipment comprises an adsorption disinfection shell, a biochar adsorption module arranged inside the adsorption disinfection shell and an ozone contact column which is arranged inside the adsorption disinfection shell and is connected with an external ozone generator; a separation cavity plate is arranged in the adsorption and disinfection shell and divides the interior of the adsorption and disinfection shell into an adsorption cavity and a disinfection cavity; the lower end part of the side wall of the adsorption cavity is provided with a water inlet port connected with the retreatment unit, and the biochar adsorption module is arranged inside the adsorption cavity and is positioned at the upper end of the water inlet port; the upper end part of the side wall of the disinfection cavity is provided with a water outlet port connected with the tail unit, and the ozone contact column is arranged in the disinfection cavity and is positioned at the lower end of the water outlet end; and electromagnetic valves are arranged at the joint of the water inlet port and the retreating unit and the joint of the water outlet port and the tail unit.
Further, a treatment process for a discharge treatment device for petrochemical industry output wastewater specifically comprises the following steps: the oil removal unit, the pretreatment unit, the retreatment unit and the tail unit are utilized to sequentially treat the petrochemical industry output wastewater.
Compared with the prior art, the invention has the beneficial effects that: the invention has reasonable design of the whole structure, and can effectively ensure the stability of the effluent quality by utilizing the oil removing unit and the retreatment unit with special structures to treat the petrochemical wastewater with larger water quality and water quantity fluctuation; and the reprocessing unit can be used in an adjusting mode according to the water quality of the petrochemical wastewater, so that the effluent quality can be effectively guaranteed to reach the standard, and the method is suitable for large-scale popularization.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the oil removal unit according to the present invention;
FIG. 3 is a schematic diagram of the structure of the pretreatment unit of the present invention;
FIG. 4 is a schematic diagram of the reprocessing unit of the present invention;
FIG. 5 is a schematic structural view of embodiment 2 of the present invention;
FIG. 6 is a schematic view of the construction of the adsorption sterilizing apparatus of the present invention;
wherein, 1-an oil removing unit, 11-a water collecting tank, 111-a left cavity, 112-a right cavity, 12-an oil removing unit, 13-an installation unit, 2-a pretreatment unit, 21-a pretreatment shell, 22-an electrolysis unit, 221-an electrolysis cylinder, 222-an electrode group, 23-an air flotation unit, 231-a reducing funnel, 232-a dissolved air pipeline, 233-a slag discharging tank, 2331-a slag discharging tank body, 2332-a slag discharging funnel, 24-a water inlet unit, 241-a water inlet pipe, 242-a dispersion disc, 3-a reprocessing unit, 31-a reprocessing shell, 310-a sub cavity, 311-a water outlet module, 32-a reprocessing module, 321-a membrane module, 322-an aeration module, 4-a tail placing unit, 5-an intelligent oil removing device, 51-detection equipment, 511-oil level sensing connecting rod, 512-water level sensing connecting rod, 513-oil level floating ball, 514-water level floating ball, 515-signal receiving module, 52-separation equipment, 521-separation shell, 5210-oil outlet cavity, 5211-oil inlet, 5212-wastewater port, 522-oil inlet valve, 523-water inlet valve, 6-adsorption and disinfection equipment, 61-adsorption and disinfection shell, 610-separation cavity plate, 611-adsorption cavity, 612-disinfection cavity, 62-charcoal adsorption module and 63-ozone contact column.
Detailed Description
Example 1: as shown in fig. 1, a discharge treatment device for petrochemical output wastewater comprises an oil removal unit 1 for performing oil removal treatment on petrochemical output wastewater, a pretreatment unit 2 connected with the oil removal unit 1 and used for pretreating petrochemical output wastewater after oil removal, a reprocessing unit 3 connected with the pretreatment unit 2 and used for reprocessing petrochemical output wastewater after pretreatment, and a tail unit 4 connected with the reprocessing unit 3 and used for performing post treatment on petrochemical output wastewater after reprocessing;
as shown in fig. 2, the oil removing unit 1 includes a sump 11 and an oil removing unit 12 mounted on the sump 11 using a mounting unit 13; the oil removing unit 12 adopts intelligent oil removing equipment 5, and the intelligent oil removing equipment 5 comprises detection equipment 51 which is arranged in the water collecting tank 11 and used for detecting the height of wastewater and the height of an oil surface and separation equipment 52 which is arranged in the water collecting tank 11 and used for separating floating oil at the upper end of the wastewater;
the separation device 52 comprises a separation shell 521, an oil inlet valve 522 and a water inlet valve 523 which are arranged inside the separation shell 521; the separation shell 521 is installed in the water collecting tank 11 through the installation unit 13, and the separation shell 521 divides the water collecting tank 11 into a left cavity 111 and a right cavity 112;
an oil inlet 5211 is formed in the upper end part of the side wall of the left cavity 111 of the separating shell 521, and a waste water port 5212 which penetrates through the separating shell 521 and is communicated with the left cavity 111 and the right cavity 112 at two ports is formed in the bottom of the separating shell 521;
wherein, the mounting unit 13 adopts a driving slide rail device; the separation shell 521 is mounted on the mounting unit 13, and the separation shell 521 can adjust the volumes of the left cavity 111 and the right cavity 112 by moving left and right inside the water collecting tank 11 through the mounting unit 13;
an oil outlet cavity 5210 communicated with the oil inlet 5211 is formed in the separating shell 521;
an oil feed valve 522 is installed inside the separation housing 521 for controlling opening/closing of the oil inlet 5211; a water inlet valve 523 installed inside the separation case 521 for controlling opening/closing of the waste water port 5212;
the detection device 51 comprises an oil level sensing connecting rod 511 and a water level sensing connecting rod 512 which are arranged in parallel in the left cavity 111, an oil level floating ball 513 and a water level floating ball 514 which are respectively movably sleeved on the sensing connecting rod 511 and the water level sensing connecting rod 512, and a signal receiving module 515 which is connected with the sensing connecting rod 511 and the water level sensing connecting rod 512;
as shown in fig. 3, the pretreatment unit 2 includes a pretreatment housing 21, an electrolysis unit 22, an air flotation unit 23, and a water inlet unit 24 for feeding water into the interior of the pretreatment housing 21, which are located inside the pretreatment housing 21;
the electrolysis unit 22 comprises an electrolysis cylinder 221 mounted inside the pretreatment housing 21 and coaxial with the pretreatment housing 21, and an electrode group 222 mounted inside the electrolysis cylinder 221; the water inlet unit 24 comprises a water inlet pipe 241 extending to the inside of the electrolytic tank 221 through the upper end of the pretreatment housing 21 and a dispersion disc 242 mounted on the water outlet end of the water inlet pipe 241; the electrode assembly 222 is positioned at the upper end of the dispersion disc 242;
the air flotation unit 23 comprises a reducing funnel 231 arranged at the upper end of the electrolytic cylinder 221, an air dissolving pipeline 232 arranged on the side wall of the pretreatment shell 21 and positioned right above the reducing funnel 231, and a slag discharging groove 233 arranged on the side wall of the pretreatment shell 21; the dissolved air pipeline 232 is connected with an external micro-bubble generator;
the slag notch 233 comprises a slag notch body 2331 arranged on the side wall of the pretreatment housing 21 and a slag leakage funnel 2332 which is sleeved in the slag notch 233 and the upper end of which extends to the interior of the pretreatment housing 21;
as shown in fig. 4, the reprocessing unit 3 includes a reprocessing housing 31 and a plurality of sets of reprocessing modules 32 mounted inside the reprocessing housing 31;
the reprocessing shell 31 is sequentially and uniformly provided with sub-cavities 310 corresponding to the reprocessing modules 32 in number from the water inlet end to the water outlet end, and two adjacent sub-cavities 310 are connected end to end;
the upper end of each sub-cavity 310 is provided with a water outlet module 311; the lower ends of two adjacent sub-cavities 310 are communicated, and electromagnetic valves are arranged at the communicated positions;
the reprocessing module 32 comprises a membrane module 321 installed inside the sub-cavity 310 and an aeration module 322 installed inside the membrane module 321;
the tail unit 4 comprises an effluent retention tank and mud scraping equipment arranged inside the effluent retention tank.
The treatment process of the emission treatment device provided by the embodiment specifically comprises the following steps:
the method comprises the following steps: when the oil inlet valve 522 and the water inlet valve 523 are both in a closed state, petrochemical wastewater enters the water collecting tank 11; the oil level and the water level are determined by the oil level floating ball 513 and the water level floating ball 514, the oil inlet valve 522 can be opened when the oil level is the same as the oil inlet 5211, and then the water inlet valve 523 is opened to discharge the wastewater in the left cavity 111 to the right cavity 112; in the period, the volume of the left cavity 111 is adjusted through the mounting unit 13 to ensure that the height of the oil surface is more than or equal to that of the oil inlet 5211 and more than or equal to that of the water surface;
step two: the wastewater after oil-water separation firstly enters the electrolysis unit 22 through the water inlet unit 24 and is subjected to electrolysis treatment, and the water surface rises to the position of the reducing funnel 231 for air floatation treatment;
step three: the wastewater after the air floatation treatment firstly enters the sub-cavity 310 to be subjected to biochemical treatment through the retreatment module 32;
it should be noted that: the purpose of the disposed retreatment unit 3 with a special structure is to cope with different petrochemical wastewater, and the number of the sub-cavities 310 can be selected according to the water quality selectivity of the petrochemical wastewater in the actual use; specifically, the actual wastewater path is determined according to the selective closing and opening of each water outlet module 311 and each electromagnetic valve;
step four: the wastewater after biochemical treatment reaches the discharge standard, and then enters the tail unit 4 for temporary discharge.
Example 2: as shown in fig. 5, a discharge treatment device for petrochemical output wastewater comprises an oil removal unit 1 for performing oil removal treatment on petrochemical output wastewater, a pretreatment unit 2 connected with the oil removal unit 1 and used for pretreating petrochemical output wastewater after oil removal, a reprocessing unit 3 connected with the pretreatment unit 2 and used for reprocessing petrochemical output wastewater after pretreatment, and a tail unit 4 connected with the reprocessing unit 3 and used for performing post treatment on petrochemical output wastewater after reprocessing; the joint of the reprocessing unit 3 and the tail unit 4 is also provided with an adsorption disinfection device 6;
as shown in fig. 2, the oil removing unit 1 includes a sump 11 and an oil removing unit 12 mounted on the sump 11 using a mounting unit 13; the oil removing unit 12 adopts intelligent oil removing equipment 5, and the intelligent oil removing equipment 5 comprises detection equipment 51 which is arranged in the water collecting tank 11 and used for detecting the height of wastewater and the height of an oil surface and separation equipment 52 which is arranged in the water collecting tank 11 and used for separating floating oil at the upper end of the wastewater;
the separation device 52 comprises a separation shell 521, an oil inlet valve 522 and a water inlet valve 523 which are arranged inside the separation shell 521; the separation shell 521 is installed in the water collecting tank 11 through the installation unit 13, and the separation shell 521 divides the water collecting tank 11 into a left cavity 111 and a right cavity 112;
wherein, the mounting unit 13 adopts a driving slide rail device; the separation shell 521 is mounted on the mounting unit 13, and the separation shell 521 can adjust the volumes of the left cavity 111 and the right cavity 112 by moving left and right inside the water collecting tank 11 through the mounting unit 13;
an oil inlet 5211 is formed in the upper end part of the side wall of the left cavity 111 of the separating shell 521, and a waste water port 5212 which penetrates through the separating shell 521 and is communicated with the left cavity 111 and the right cavity 112 at two ports is formed in the bottom of the separating shell 521;
an oil outlet cavity 5210 communicated with the oil inlet 5211 is formed in the separating shell 521;
an oil feed valve 522 is installed inside the separation housing 521 for controlling opening/closing of the oil inlet 5211; a water inlet valve 523 installed inside the separation case 521 for controlling opening/closing of the waste water port 5212;
the detection device 51 comprises an oil level sensing connecting rod 511 and a water level sensing connecting rod 512 which are arranged in parallel in the left cavity 111, an oil level floating ball 513 and a water level floating ball 514 which are respectively movably sleeved on the sensing connecting rod 511 and the water level sensing connecting rod 512, and a signal receiving module 515 which is connected with the sensing connecting rod 511 and the water level sensing connecting rod 512;
as shown in fig. 3, the pretreatment unit 2 includes a pretreatment housing 21, an electrolysis unit 22, an air flotation unit 23, and a water inlet unit 24 for feeding water into the interior of the pretreatment housing 21, which are located inside the pretreatment housing 21;
the electrolysis unit 22 comprises an electrolysis cylinder 221 mounted inside the pretreatment housing 21 and coaxial with the pretreatment housing 21, and an electrode group 222 mounted inside the electrolysis cylinder 221; the water inlet unit 24 comprises a water inlet pipe 241 extending to the inside of the electrolytic tank 221 through the upper end of the pretreatment housing 21 and a dispersion disc 242 mounted on the water outlet end of the water inlet pipe 241; the electrode assembly 222 is positioned at the upper end of the dispersion disc 242;
the air flotation unit 23 comprises a reducing funnel 231 arranged at the upper end of the electrolytic cylinder 221, an air dissolving pipeline 232 arranged on the side wall of the pretreatment shell 21 and positioned right above the reducing funnel 231, and a slag discharging groove 233 arranged on the side wall of the pretreatment shell 21; the dissolved air pipeline 232 is connected with an external micro-bubble generator;
the slag notch 233 comprises a slag notch body 2331 arranged on the side wall of the pretreatment housing 21 and a slag leakage funnel 2332 which is sleeved in the slag notch 233 and the upper end of which extends to the interior of the pretreatment housing 21;
as shown in fig. 4, the reprocessing unit 3 includes a reprocessing housing 31 and a plurality of sets of reprocessing modules 32 mounted inside the reprocessing housing 31;
the reprocessing shell 31 is sequentially and uniformly provided with sub-cavities 310 corresponding to the reprocessing modules 32 in number from the water inlet end to the water outlet end, and two adjacent sub-cavities 310 are connected end to end;
the upper end of each sub-cavity 310 is provided with a water outlet module 311; the lower ends of two adjacent sub-cavities 310 are communicated, and electromagnetic valves are arranged at the communicated positions;
the reprocessing module 32 comprises a membrane module 321 installed inside the sub-cavity 310 and an aeration module 322 installed inside the membrane module 321;
the tail unit 4 comprises a water outlet staying pool and mud scraping equipment arranged in the water outlet staying pool;
as shown in fig. 6, the adsorption sterilizing device 6 comprises an adsorption sterilizing housing 61, a charcoal adsorption module 62 installed inside the adsorption sterilizing housing 61, and an ozone contact column 63 installed inside the adsorption sterilizing housing 61 and connected to an external ozone generator;
a separation cavity plate 610 is arranged inside the adsorption and disinfection shell 61, and the separation cavity plate 610 divides the inside of the adsorption and disinfection shell 61 into an adsorption cavity 611 and a disinfection cavity 612; a water inlet port connected with the retreatment unit 3 is formed in the lower end of the side wall of the adsorption cavity 611, and the biochar adsorption module 62 is arranged in the adsorption cavity 611 and is positioned at the upper end of the water inlet port; the upper end part of the side wall of the disinfection cavity 612 is provided with a water outlet port connected with the tail unit 4, and the ozone contact column 63 is arranged in the disinfection cavity 612 and is positioned at the lower end of the water outlet end;
the joint of the water inlet port and the retreatment unit 3 and the joint of the water outlet port and the tail unit 4 are provided with electromagnetic valves.
The treatment process of the emission treatment device provided by the embodiment specifically comprises the following steps:
the method comprises the following steps: when the oil inlet valve 522 and the water inlet valve 523 are both in a closed state, petrochemical wastewater enters the water collecting tank 11; the oil level and the water level are determined by the oil level floating ball 513 and the water level floating ball 514, the oil inlet valve 522 can be opened when the oil level is the same as the oil inlet 5211, and then the water inlet valve 523 is opened to discharge the wastewater in the left cavity 111 to the right cavity 112; in the period, the volume of the left cavity 111 is adjusted through the mounting unit 13 to ensure that the height of the oil surface is more than or equal to that of the oil inlet 5211 and more than or equal to that of the water surface;
step two: the wastewater after oil-water separation firstly enters the electrolysis unit 22 through the water inlet unit 24 and is subjected to electrolysis treatment, and the water surface rises to the position of the reducing funnel 231 for air floatation treatment;
step three: the wastewater after the air floatation treatment firstly enters the sub-cavity 310 to be subjected to biochemical treatment through the retreatment module 32;
it should be noted that: the purpose of the disposed retreatment unit 3 with a special structure is to cope with different petrochemical wastewater, and the number of the sub-cavities 310 can be selected according to the water quality selectivity of the petrochemical wastewater in the actual use; specifically, the actual wastewater path is determined according to the selective closing and opening of each water outlet module 311 and each electromagnetic valve;
step four: the wastewater after biochemical treatment reaches the discharge standard, and enters the tail unit 4 for temporary discharge after being sequentially subjected to adsorption treatment in the adsorption cavity 611 and disinfection treatment in the disinfection cavity 612.
Claims (9)
1. The utility model provides a discharge treatment device for petrochemical output waste water, its characterized in that, including be used for carrying out deoiling unit (1) of deoiling processing to petrochemical output waste water, with deoiling unit (1) be connected be used for carrying out pretreatment in petrochemical output waste water after the deoiling in pretreatment unit (2), with pretreatment unit (2) be connected be used for carrying out retreatment unit (3) and with retreatment unit (3) be connected be used for carrying out post treatment to the petrochemical output waste water after the retreatment tail unit (4);
the oil removal unit (1) comprises a collecting tank (11) and an oil removal unit (12) which is installed on the collecting tank (11) through an installation unit (13); the oil removing unit (12) adopts intelligent oil removing equipment (5), and the intelligent oil removing equipment (5) comprises detection equipment (51) which is arranged in the collecting tank (11) and is used for detecting the height of wastewater and the height of an oil surface and separation equipment (52) which is arranged in the collecting tank (11) and is used for separating floating oil at the upper end of the wastewater;
the separation equipment (52) comprises a separation shell (521), and an oil inlet valve (522) and a water inlet valve (523) which are arranged inside the separation shell (521); the separation shell (521) is installed in the water collecting tank (11) through the installation unit (13), and the separation shell (521) divides the water collecting tank (11) into a left cavity (111) and a right cavity (112);
an oil inlet (5211) is formed in the position, close to the upper end, of the side wall of the left cavity (111) of the separating shell (521), a waste water port (5212) which penetrates through the separating shell (521) and is communicated with the left cavity (111) and the right cavity (112) at two ports is formed in the bottom of the separating shell (521);
an oil outlet cavity (5210) communicated with the oil inlet (5211) is formed in the separating shell (521);
the oil inlet valve (522) is arranged inside the separating shell (521) and is used for controlling the opening/closing of the oil inlet (5211); the water inlet valve (523) is installed inside the separation housing (521) for controlling the opening/closing of the waste water port (5212);
the detection equipment (51) comprises an oil surface sensing connecting rod (511) and a water surface sensing connecting rod (512) which are arranged in the left cavity (111) in parallel, an oil surface floating ball (513) and a water surface floating ball (514) which are respectively movably sleeved on the sensing connecting rod (511) and the water surface sensing connecting rod (512), and a signal receiving module (515) which is connected with the sensing connecting rod (511) and the water surface sensing connecting rod (512);
the pretreatment unit (2) comprises a pretreatment shell (21), an electrolysis unit (22), an air flotation unit (23) and a water inlet unit (24) which are positioned inside the pretreatment shell (21) and are used for feeding water into the pretreatment shell (21).
2. The effluent treatment plant for petrochemical production wastewater according to claim 1, wherein said electrolysis unit (22) comprises an electrolysis cylinder (221) mounted inside the pre-treatment housing (21) and coaxial with the pre-treatment housing (21) and an electrode group (222) mounted inside the electrolysis cylinder (221); the water inlet unit (24) comprises a water inlet pipe (241) which penetrates through the upper end of the pretreatment shell (21) and extends to the interior of the electrolytic cylinder (221) and a dispersion disc (242) which is arranged on the water outlet end of the water inlet pipe (241); the electrode assembly (222) is located at the upper end of the dispersion disc (242).
3. The discharge treatment device for the petrochemical production wastewater according to claim 2, wherein the air flotation unit (23) comprises a variable diameter funnel (231) installed at the upper end of the electrolytic barrel (221), a dissolved air pipeline (232) arranged on the side wall of the pretreatment housing (21) and located right above the variable diameter funnel (231), and a slag discharge groove (233) installed on the side wall of the pretreatment housing (21); the dissolved air pipeline (232) is connected with an external microbubble generator.
4. The effluent treatment plant as claimed in claim 3, wherein said slag tapping channel (233) comprises a slag tapping channel body (2331) mounted on the side wall of the pre-treatment housing (21) and a slag leakage funnel (2332) fitted in the slag tapping channel (233) and having an upper end extending into the interior of the pre-treatment housing (21).
5. The discharge treatment apparatus for petrochemical production wastewater according to claim 1, wherein the reprocessing unit (3) comprises a reprocessing housing (31) and a plurality of sets of reprocessing modules (32) installed inside the reprocessing housing (31); sub-cavities (310) corresponding to the number of the reprocessing modules (32) are uniformly arranged in the reprocessing shell (31) from the water inlet end to the water outlet end, and two adjacent sub-cavities (310) are connected end to end;
the upper end of each sub-cavity (310) is provided with a water outlet module (311); the lower ends of two adjacent sub-cavities (310) are communicated, and electromagnetic valves are arranged at the communicated positions;
the reprocessing module (32) comprises a membrane module (321) arranged inside the sub-cavity (310) and an aeration module (322) arranged inside the membrane module (321).
6. The discharge treatment device for petrochemical production wastewater according to claim 1, wherein the tail unit (4) comprises an effluent retention tank and a mud scraping device installed inside the effluent retention tank.
7. The discharge treatment device for petrochemical industry output wastewater according to claim 1, characterized in that the joint of the retreatment unit (3) and the tail unit (4) is further provided with an adsorption disinfection device (6).
8. The effluent treatment plant for petrochemical production wastewater according to claim 7, wherein said adsorption disinfection apparatus (6) comprises an adsorption disinfection housing (61), a biochar adsorption module (62) installed inside the adsorption disinfection housing (61) and an ozone contact column (63) installed inside the adsorption disinfection housing (61) and connected to an external ozone generator; a separation cavity plate (610) is arranged in the adsorption and disinfection shell (61), and the separation cavity plate (610) divides the interior of the adsorption and disinfection shell (61) into an adsorption cavity (611) and a disinfection cavity (612); a water inlet port connected with the retreatment unit (3) is formed in the lower end of the side wall of the adsorption cavity (611), and the charcoal adsorption module (62) is arranged in the adsorption cavity (611) and located at the upper end of the water inlet port; the upper end part of the side wall of the disinfection cavity (612) is provided with a water outlet port connected with the tail unit (4), and the ozone contact column (63) is arranged in the disinfection cavity (612) and is positioned at the lower end of the water outlet end; and electromagnetic valves are arranged at the joint of the water inlet port and the retreatment unit (3) and the joint of the water outlet port and the tail unit (4).
9. The treatment process for the discharge treatment device of the petrochemical industry output wastewater, according to claim 1-8, is characterized by comprising the following steps: the oil removal unit (1), the pretreatment unit (2), the retreatment unit (3) and the tail unit (4) are used for sequentially treating the petrochemical industry output wastewater.
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| CN202020939U (en) * | 2011-02-21 | 2011-11-02 | 宣伯民 | Efficient variable-volume oil skimmer |
| CN106865884A (en) * | 2017-01-20 | 2017-06-20 | 浙江双益环保科技发展有限公司 | A kind of advanced treatment process of petrochemical wastewater |
| CN107867740A (en) * | 2016-09-26 | 2018-04-03 | 上海和惠生态环境科技有限公司 | A kind of oily waste water electric flocculation depth air-flotation system |
| CN111777128A (en) * | 2019-12-11 | 2020-10-16 | 汨罗市华科环保机械设备有限公司 | Stainless steel oil-water separation equipment |
-
2021
- 2021-08-23 CN CN202110967401.4A patent/CN113582413B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202020939U (en) * | 2011-02-21 | 2011-11-02 | 宣伯民 | Efficient variable-volume oil skimmer |
| CN107867740A (en) * | 2016-09-26 | 2018-04-03 | 上海和惠生态环境科技有限公司 | A kind of oily waste water electric flocculation depth air-flotation system |
| CN106865884A (en) * | 2017-01-20 | 2017-06-20 | 浙江双益环保科技发展有限公司 | A kind of advanced treatment process of petrochemical wastewater |
| CN111777128A (en) * | 2019-12-11 | 2020-10-16 | 汨罗市华科环保机械设备有限公司 | Stainless steel oil-water separation equipment |
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Effective date of registration: 20231206 Address after: No. 228, Binjiang East Road, Xunyang District, Jiujiang City, Jiangxi Province 332000 Patentee after: Jiujiang Petrochemical Design Engineering Co.,Ltd. Address before: 525000 No. two, No. 139, Guandu Road, Guangdong, Maoming Patentee before: GUANGDONG University OF PETROCHEMICAL TECHNOLOGY |
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