CN205258190U - Oily sewage biochemical treatment system - Google Patents
Oily sewage biochemical treatment system Download PDFInfo
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- CN205258190U CN205258190U CN201521006560.4U CN201521006560U CN205258190U CN 205258190 U CN205258190 U CN 205258190U CN 201521006560 U CN201521006560 U CN 201521006560U CN 205258190 U CN205258190 U CN 205258190U
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Abstract
The utility model discloses an oily sewage biochemical treatment system, it includes oil interceptor, equalizing basin, coagulation reactor, charge device, sludge tihckener, sedimentation tank, oil water separator and contaminated -oil basin, the sewage access connection sewage discharge house steward of oil interceptor, the sewage import of equalizing basin is connected to the outlet of sewer, coagulation reactor's sewage import is connected to the outlet of sewer of equalizing basin, the medicine mouth that adds at coagulation reactor top is connected with charge device, the sewage import of sludge tihckener and sedimentation tank is connected respectively to the drain of coagulation reactor bottom, the top of sedimentation tank is equipped with the oil skimming ware, the output of oil skimming ware is connected to the equalizing basin, oil water separator's input port is connected to the outlet of sewer of sedimentation tank, oil water separator's delivery outlet department is equipped with oil concentration analyzer and tee bend pneumatic valve. The utility model has the advantages of reasonable design, the treatment effect is good, and discharge water oiliness concentration can be less than the discharge index of environmental protection requirement greatly.
Description
Technical field
The utility model relates to a kind of oil-polluted water biochemical treatment system, belongs to oily water processing technology field.
Background technology
China oil field distributes wide, spreads all over northeast, North China, Central-South, southwestern, Central China and southeastern coast various places. At present, most of oil field has entered mid-term and the later stage of oil exploitation, and the moisture content of extraction crude oil has reached 70 ~ 80%, and some oil fields, even up to 90%, produce a large amount of oil-polluted waters after water-oil separating. If oil-polluted water is not treated, directly discharge, not only can cause the pollution at soil, water source, sometimes even can cause sump oil firing accident, threatens the people's life security, causes national economic loss, also can endanger the interests in oil field self simultaneously.
The oil-polluted waters such as the current oil emulsion for generation in process of production, petroleum-type, surfactant adopt the means such as dosing, breakdown of emulsion, flocculation, precipitation, strong oxidation, filtration to process conventionally. But there is following problem:
(1) adopt gravity oil-removing, coagulant precipitation, the old three cover technology of filtration, complex process, treatment effect is unstable, and labour intensity is large.
(2) investment cost is high, and operating cost is high.
(3) after dosing, sludge quantity is large, and mud oil content is high, and system is subject to mud secondary pollution, and Treatment of Sludge difficulty is large.
Summary of the invention
For the defect existing in above-mentioned prior art, the utility model provides a kind of oil-polluted water biochemical treatment system.
The technical scheme that the utility model is taked is: a kind of oil-polluted water biochemical treatment system, it comprises oil interceptor, regulating reservoir, coagulation reactor, chemicals dosing plant, sludge concentration tank, sedimentation basin, oil water separator and contaminated-oil basin, the sewage import of described oil interceptor connects sewage discharge house steward by sewage pipe, the outlet of sewer of oil interceptor connects the sewage import of regulating reservoir by sewage pipe, the sump oil outlet at oil interceptor top is connected to contaminated-oil basin by contaminated oil pipe, the outlet of sewer of described regulating reservoir connects the sewage import of coagulation reactor by sewage pipe, the sump oil outlet at regulating reservoir top is connected to contaminated-oil basin by contaminated oil pipe, the dosing mouth at described coagulation reactor top is connected with chemicals dosing plant by chemical feed pipe, the sewage draining exit of coagulation reactor bottom is connected to sludge concentration tank by sludge pipe, and connect the sewage import of sedimentation basin by sewage pipe, the top of described sedimentation basin is provided with oil skimmer, the output of oil skimmer is connected to regulating reservoir, the sewage draining exit of described sedimentation basin is connected to sludge concentration tank by sludge pipe, the outlet of sewer of sedimentation basin connects the input port of oil water separator by sewage pipe, the equipped at outlet port of described oil water separator is provided with oil concentration analyzer and threeway pneumatic operated valve, the input port of described threeway pneumatic operated valve connects the delivery outlet of oil water separator, the first delivery outlet of threeway pneumatic operated valve is as floss hole, the second delivery outlet is connected to regulating reservoir by contaminated oil pipe.
Described oil interceptor adopts three grades of oil removal modes, is provided with altogether three oil removal chambers, between each oil removal chamber, passes through baffle for separating. Dividing plate is made up of upper spacer and lower clapboard, the setting of staggering of upper spacer and lower clapboard, and upper spacer is connected with the top of oil interceptor, and lower clapboard is connected with the bottom of oil interceptor. The top cover being also provided with on the top of oil removal chamber, described top cover is slope cover plate.
In described coagulation reactor, be provided with agitator.
In described sedimentation basin, be provided with the corrugated plating group that tilts to install.
The beneficial effects of the utility model are: (1) reasonable in design, and treatment effect is good, and discharge water oil concentration can be significantly less than the discharge index of environmental requirement; (2) can save the centrifugal sewage-treatment plant that heavy oil treatment system carries, greatly reduce investment outlay, alleviate operation burden; (3) automaticity is high, is convenient to operation and management; (4) reduced cost of sewage disposal.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure: 1-oil interceptor, 2-regulating reservoir, 3 contaminated-oil basins, 4-coagulation reactor, 5-chemicals dosing plant, 6-sludge concentration tank, 7-sedimentation basin, 8-oil skimmer, 9-oil water separator, 10-oil concentration analyzer, 11-threeway pneumatic operated valve, 12-dividing plate, 13-cover plate, 14-agitator, 15-corrugated plating group.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
As shown in Figure 1, a kind of oil-polluted water biochemical treatment system, it comprises oil interceptor 1, regulating reservoir 2, coagulation reactor 4, chemicals dosing plant 5, sludge concentration tank 6, sedimentation basin 7, oil water separator 9 and contaminated-oil basin 3, the sewage import of described oil interceptor 1 connects sewage source by sewage pipe, the outlet of sewer of oil interceptor 1 connects the sewage import of regulating reservoir 2 by sewage pipe, the sump oil outlet at oil interceptor 1 top is connected to contaminated-oil basin by contaminated oil pipe, the outlet of sewer of described regulating reservoir 2 connects the sewage import of coagulation reactor 4 by sewage pipe, the sump oil outlet at regulating reservoir 2 tops is connected to contaminated-oil basin by contaminated oil pipe, the dosing mouth at described coagulation reactor 4 tops is connected with chemicals dosing plant 5 by chemical feed pipe, the sewage draining exit of coagulation reactor 4 bottoms is connected to sludge concentration tank 6 by sludge pipe, and connect the sewage import of sedimentation basin 7 by sewage pipe, the top of described sedimentation basin 7 is provided with oil skimmer 8, the output of oil skimmer 8 is connected to regulating reservoir 2, the sewage draining exit of described sedimentation basin 7 is connected to sludge concentration tank 6 by sludge pipe, the outlet of sewer of sedimentation basin 3 connects the input port of oil water separator 9 by sewage pipe, the equipped at outlet port of described oil water separator 9 is provided with oil concentration analyzer 10 and threeway pneumatic operated valve 11, the input port of described threeway pneumatic operated valve 11 connects the delivery outlet of oil water separator 9, the first delivery outlet of threeway pneumatic operated valve 11 is as floss hole, the second delivery outlet is connected to regulating reservoir 2 by contaminated oil pipe.
In the utility model, first oil-polluted water enters oil interceptor 1 after sewage discharge house steward collects. Because oily proportion is less than water, and the proportion of most of solid impurity is greater than water, utilizes the different principle of proportion, and the suspended oil containing in sewage directly separates and floats up to gradually liquid level from water, at the bottom of solid impurity is sink to pond. The top cover of oil interceptor 1 adopts slope lid 13, can prevent on the one hand the evaporation of large gauging vapour in pond, in the sewage process mobile along Chi Ding, can adhere to the oil slick catching in water on the other hand, make it to be agglomerated into bulk oil slick and be beneficial to separate from water and float up to liquid level. Oil interceptor 1 is designed to three grades of oil removal modes, and centre has height dividing plate 12 straggly, can control flow velocity and the flow direction of sewage. The control of flow velocity can be avoided the violent disturbance in pond, is conducive to sump oil and separates with the stable of water. The control of flow direction, can make sewage only at the bottom of pond, flow, and avoids flowing of upper strata oil slick, is conducive to the coalescent layering of oil slick.
Upper strata oil slick in oil interceptor 1 is discharged to contaminated-oil basin 3, and lower floor's sewage enters regulating reservoir 2. Regulating reservoir 2 is used for sewage to carry out further gravitational settling, regulates the flow of sewage simultaneously, to ensure stable, the operation continuously of flocculation plant. After the gravitational settling of oil interceptor and regulating reservoir, can be except the most suspended oils that contain in decontaminated water. The oil content now containing in sewage is most of for emulsified state exists, and must dosing carry out chemical treatment. Then the sewage in regulating reservoir 2 is admitted to coagulation reaction device and carries out dosing coagulating treatment, and coagulation reaction device is made up of chemicals dosing plant 5 and coagulation reactor 4. In chemicals dosing plant 5, the complexity according to the height of oil concentration in oil-polluted water with processing procedure, is controlled the number of chemical feeding quantity by batch meter. Oil-polluted water is admitted to after coagulation tank, and coagulant, alkali, flocculation aid add successively, starts agitator 14 sewage is stirred in dosing. Agitator 14 has been applied converter technique, in the process of dosing reaction, can change the speed of stirring, so both ensure fully mixing of medicament and sewage, demulsification and coagulation process are carried out smoothly, be unlikely to again to cause excessive disturbance, affect the coalescent of insoluble matter and precipitation.
After coagulating process completes, the precipitation of generation is discharged to sludge concentration tank 6, and sewage is discharged into sedimentation basin 7 and carries out further precipitation and clarification. In coagulating process, the emulsified state of oil is broken, and becomes suspended oil. Insoluble matter that wherein some is generated catches and generates and discharge thereupon, and another part is still present in and in water, enters sedimentation basin 7 with suspended state. The corrugated plating group 15 that tilts to install is housed in sedimentation basin 7, and when effluent stream is during through corrugated plating group, the suspended oil integument corrugated plating 15 being scattered in water catches, and is agglomerated into the floating upper liquid level of bulky grain oil droplet. When oil slick gathers when more, can utilize manual oil skimmer to be sent to regulating reservoir, carry out further gravitational settling and gather with regulating reservoir oil slick after drain into contaminated-oil basin. The insoluble matter that coagulating process generates continues precipitation in sedimentation basin 7. Sedimentation basin 7 is divided into multiple points of ponds by height partition wall straggly, can control the flow direction of water in the flow process of water, makes it to flow in middle level, and avoids flowing of upper strata oil slick and lower sediment as far as possible, to strengthen water clarification effect.
Sewage oil concentration in sewage after dosing precipitation is very little, and in order to ensure discharge water meet the requirement of environmental protection, sewage is sent to oil water separator 9 and carries out last separation. The outlet discharge tube of oil water separator 9 is equipped with oil concentration analyzer 10, the oil concentration in can automatic monitor for continuously water. In the time of oil percentage in water≤10mg/kg, discharge water can directly be discharged outside factory; When oil concentration > when 10mg/kg, discharge water is sent back to regulating reservoir 2 and re-starts processing.
The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.
Claims (6)
1. an oil-polluted water biochemical treatment system, it is characterized in that: comprise oil interceptor, regulating reservoir, coagulation reactor, chemicals dosing plant, sludge concentration tank, sedimentation basin, oil water separator and contaminated-oil basin, the sewage import of described oil interceptor connects sewage discharge house steward by sewage pipe, the outlet of sewer of oil interceptor connects the sewage import of regulating reservoir by sewage pipe, the sump oil outlet at oil interceptor top is connected to contaminated-oil basin by contaminated oil pipe, the outlet of sewer of described regulating reservoir connects the sewage import of coagulation reactor by sewage pipe, the sump oil outlet at regulating reservoir top is connected to contaminated-oil basin by contaminated oil pipe, the dosing mouth at described coagulation reactor top is connected with chemicals dosing plant by chemical feed pipe, the sewage draining exit of coagulation reactor bottom is connected to sludge concentration tank by sludge pipe, and connect the sewage import of sedimentation basin by sewage pipe, the top of described sedimentation basin is provided with oil skimmer, the output of oil skimmer is connected to regulating reservoir, the sewage draining exit of described sedimentation basin is connected to sludge concentration tank by sludge pipe, the outlet of sewer of sedimentation basin connects the input port of oil water separator by sewage pipe, the equipped at outlet port of described oil water separator is provided with oil concentration analyzer and threeway pneumatic operated valve, the input port of described threeway pneumatic operated valve connects the delivery outlet of oil water separator, the first delivery outlet of threeway pneumatic operated valve is as floss hole, the second delivery outlet is connected to regulating reservoir by contaminated oil pipe.
2. oil-polluted water biochemical treatment system according to claim 1, is characterized in that: described oil interceptor adopts three grades of oil removal modes, is provided with altogether three oil removal chambers, between each oil removal chamber, passes through baffle for separating.
3. oil-polluted water biochemical treatment system according to claim 2, is characterized in that: described dividing plate is made up of upper spacer and lower clapboard, the setting of staggering of upper spacer and lower clapboard, and upper spacer is connected with the top of oil interceptor, and lower clapboard is connected with the bottom of oil interceptor.
4. according to the oil-polluted water biochemical treatment system described in claim 2 or 3, it is characterized in that: the top cover that the top of described oil removal chamber is provided with, described top cover is slope cover plate.
5. oil-polluted water biochemical treatment system according to claim 1, is characterized in that: in described coagulation reactor, be provided with agitator.
6. oil-polluted water biochemical treatment system according to claim 1, is characterized in that: in described sedimentation basin, be provided with the corrugated plating group that tilts to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006560.4U CN205258190U (en) | 2015-12-08 | 2015-12-08 | Oily sewage biochemical treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521006560.4U CN205258190U (en) | 2015-12-08 | 2015-12-08 | Oily sewage biochemical treatment system |
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| CN205258190U true CN205258190U (en) | 2016-05-25 |
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| CN201521006560.4U Active CN205258190U (en) | 2015-12-08 | 2015-12-08 | Oily sewage biochemical treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902971A (en) * | 2019-12-11 | 2020-03-24 | 烨辉（中国）科技材料有限公司 | Oily wastewater treatment process |
| CN111302439A (en) * | 2020-03-30 | 2020-06-19 | 杭州臻尚环境科技有限公司 | Oily waste water oil removal device |
| CN115043514A (en) * | 2022-05-06 | 2022-09-13 | 苏珊珊 | High concentration oily waste water treatment equipment |
-
2015
- 2015-12-08 CN CN201521006560.4U patent/CN205258190U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902971A (en) * | 2019-12-11 | 2020-03-24 | 烨辉（中国）科技材料有限公司 | Oily wastewater treatment process |
| CN111302439A (en) * | 2020-03-30 | 2020-06-19 | 杭州臻尚环境科技有限公司 | Oily waste water oil removal device |
| CN115043514A (en) * | 2022-05-06 | 2022-09-13 | 苏珊珊 | High concentration oily waste water treatment equipment |
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