CN217921789U - Deep treatment device for petroleum-containing wastewater - Google Patents

Deep treatment device for petroleum-containing wastewater Download PDF

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CN217921789U
CN217921789U CN202221969711.6U CN202221969711U CN217921789U CN 217921789 U CN217921789 U CN 217921789U CN 202221969711 U CN202221969711 U CN 202221969711U CN 217921789 U CN217921789 U CN 217921789U
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tank
filter
biological aerated
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water
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陆侨治
吴益辉
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Zhejiang Hinew Environmental Technology Co ltd
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Zhejiang Hinew Environmental Technology Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

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Abstract

The utility model discloses an advanced treatment device for petroleum-containing wastewater, which comprises an oil-water separation zone, an ozone catalytic oxidation filter tank and an aeration biological filter tank which are connected in sequence, wherein the oil-water separation zone comprises an inner tank and an outer tank, the inner tank is sleeved in the outer tank, the outer tank is communicated with the upper side of the inner tank and is connected in an overflow mode, the bottom of the inner tank is provided with an inner tank water inlet, and the bottom of the outer tank is provided with an outer tank water outlet; the ozone catalytic oxidation filter tank comprises a reaction tank and a stabilization tank, wherein the reaction tank is communicated with the upper side of the stabilization tank and is connected with the stabilization tank in an overflow mode; the bottom end of the biological aerated filter is provided with a water inlet of the biological aerated filter, the upper side of the biological aerated filter is provided with a water outlet of the biological aerated filter, and a filter material of the biological aerated filter is arranged in the biological aerated filter. The utility model provides an oil oily waste water's advanced treatment unit can effectually further reduce the sewage oiliness rate of the biochemical play water of second grade, reduces COD and suspended solid in the sewage simultaneously.

Description

Deep treatment device for petroleum-containing wastewater
Technical Field
The utility model relates to a sewage treatment field especially relates to an oil-containing waste water's advanced treatment unit.
Background
The petrochemical waste water is the waste water containing oil in petroleum industry, which is mainly from the processes of petroleum exploitation, petroleum refining, petrochemical industry and the like. The waste water in the oil exploitation process mainly comes from the separation water of crude oil with water, equipment washing water in the drilling and lifting process, ground precipitation of well sites and oil tank areas and the like.
After the oily wastewater is discharged into the water body, an oil film is generated on the surface of the water body, the atmospheric reoxygenation is blocked, the source of the oxygen in the water body is cut off, and the breeding and the development and the utilization of beaches are influenced at the beaches. The data show that 5x10 can be formed by discharging 1t of oil product into the water body 6 Square meter oil film; when emulsified oil and dissolved oil exist in water, dissolved oxygen in the water can be consumed in the decomposition process due to the action of aerobic microorganisms, so that the water body is in an anoxic state, and the survival of fishes and aquatic organisms is influenced.
In addition, the oily wastewater is soaked in soil gaps to form an oil film, so that a blocking effect is generated, air, moisture and fertilizer cannot permeate into soil, the soil layer structure is damaged, the growth of crops is not facilitated, and even the crops die.
Because petrochemical products are various in variety and complex in process, the wastewater has some obvious characteristics, the water consumption of petrochemical production is high, the process is complex, and therefore, the petrochemical wastewater is discharged, the water fluctuation is large, the chemical pollutants in the wastewater are various in variety and the content change is large. Besides a certain oil content, the nondegradable COD of the discharged oily wastewater is also higher, and the discharge requirement cannot be met simply by depending on a system in a secondary biochemical pool, so that the problem of economically and effectively solving the problem of standard discharge of the oily wastewater is urgent.
SUMMERY OF THE UTILITY MODEL
The characteristics and the not enough of prior art to the oily waste water of petrochemical trade, the utility model provides an advanced treatment unit of oil-containing waste water can effectually further reduce the sewage oiliness rate of the biochemical effluent of second grade, COD and suspended solid in the reduction sewage simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an advanced treatment device for petroleum-containing wastewater comprises an oil-water separation zone, an ozone catalytic oxidation filter and an aeration biological filter which are sequentially connected, wherein the oil-water separation zone comprises an inner tank and an outer tank, the inner tank is sleeved in the outer tank, the outer tank is communicated with the upper side of the inner tank and is connected in an overflow mode, the bottom of the inner tank is provided with an inner tank water inlet, and the bottom of the outer tank is provided with an outer tank water outlet;
the ozone catalytic oxidation filter tank comprises a reaction tank and a stabilization tank, wherein the reaction tank is communicated with the upper side of the stabilization tank and is connected with the stabilization tank in an overflow mode;
the bottom end of the biological aerated filter is provided with a water inlet of the biological aerated filter, the upper side of the biological aerated filter is provided with a water outlet of the biological aerated filter, and a filtering material of the biological aerated filter is arranged in the biological aerated filter;
the water outlet of the outer tank is communicated with the water inlet of the reaction tank, and the water outlet of the stabilization tank is communicated with the water inlet of the biological aerated filter.
An oil-water separation zone oil skimmer is arranged on the upper side of the outer tank in the oil-water separation zone.
Preferably, a catalyst filter material is arranged in the reaction tank, and the reaction tank is communicated with an ozone generation system through a pipeline.
Preferably, the water inlet of the inner pool is communicated with an oil-water separation area blower.
Preferably, the bottom of the reaction tank is communicated with an ozone catalytic oxidation filter scrubbing fan, the bottoms of the reaction tank and the stabilization tank are communicated with a scrubbing water pump through a pipeline, and the upper side of the reaction tank is connected with an ozone filter backwashing water outlet pipe.
Preferably, the bottom parts of the reaction tank and the stabilization tank are respectively communicated with an emptying pipe of the ozone catalytic oxidation filter tank.
Preferably, the upper end of the stabilization tank is communicated with an ozone tail gas destructor.
Preferably, the bottom of the biological aerated filter is communicated with a biological aerated filter blow-down pipe, and the upper side of the biological aerated filter is communicated with a biological aerated filter backwashing water outlet pipe.
Preferably, the filter material of the biological aerated filter in the biological aerated filter is provided with a plurality of layers and is fixed in a layering way through a frame.
Preferably, the filter material of the biological aerated filter in the biological aerated filter is provided with 2 layers, the filling rate of the filler of the lower filter material layer is 70 to 80 percent, and the filling rate of the filler of the upper filter material layer is more than 90 percent.
Preferably, the effective water depth of the oil-water separation zone is not less than 5m.
Preferably, the biological aerated filter adopts a multi-stage series mode (not less than 2 stages), the filtration speed is between 3 and 5m/h, and the dissolved oxygen is controlled to be between 2 and 4mg/L.
Preferably, the polyurethane filler is an inert material, is tasteless, has no toxic or harmful effect on microorganisms, has a porosity of 80 to 85 percent and a wet density of less than 1g/cm 2 The pore diameter: 0.2 to 5.0mm, and the specific surface area is more than or equal to 15000m2/m 3 。
The utility model has the advantages that: (1) The oil-water separation zone adopts a mode that the outer tank is sleeved with the inner tank, sewage firstly enters the bottom of the inner tank through pipeline conveying, under the combined action of bottom aeration, the sewage flows from bottom to top, and meanwhile, grease in the sewage realizes oil-water separation under the action of bubble adhesion; (2) The reaction tank of the utility model is internally provided with the catalyst filter material, which can convert the ozone provided by the ozone generating system into hydroxyl free radicals with stronger oxidizing capability, the difficult-to-degrade organic matters in the sewage are broken chain and decomposed into easily-degradable micromolecular substances under the combined action of the ozone, and the treated sewage flows into the stabilization tank, so that the ozone in the sewage is self-decomposed; (3) The utility model has the advantages of simple process flow, fast starting and running speed, strong shock resistance, good and stable water quality treatment effect.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. an oil-water separation area, 2, an ozone catalytic oxidation filter, 3, an aeration biological filter, 4, an inner pool, 5, an outer pool, 6, a reaction pool, 7, a stabilization pool, 8, an oil-water separation area air blower, 9, an ozone catalytic oxidation filter scrubbing fan, 10, an ozone generation system, 11, an ozone tail gas destructor, 12, a scrubbing water pump, 13, an aeration biological filter fan, 14, an oil-water separation area oil skimmer, 15, a catalyst filter material, 16, an aeration biological filter material, 17, an oil-water separation area vent pipe, 18, an ozone catalytic oxidation filter vent pipe, 19, an aeration biological filter vent pipe, 20, an aeration biological backwash water outlet pipe, 21 and an ozone filter backwash water outlet pipe.
Detailed Description
The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:
example (b): as shown in the attached figure 1, the advanced treatment device for petrochemical oily wastewater shown in the attached figure 1 mainly comprises an oil-water separation zone 1, an ozone catalytic oxidation filter 2 and an aeration biological filter 3.
The main equipment and the pipeline are composed of an oil-water separation zone air blower 8, an ozone catalytic oxidation filter scrubbing fan 9, an ozone generating system 10, an ozone tail gas destructor 11, a scrubbing water pump 12, an aeration biological filter fan 13, an oil skimmer 14 with an oil-water separation zone, a catalyst filter material 15, an aeration biological filter material 16, an oil-water separation zone blow-down pipe 17, an ozone catalytic oxidation filter blow-down pipe 18, an aeration biological filter blow-down pipe 19, an aeration biological filter backwashing water outlet pipe 20 and an ozone filter backwashing water outlet pipe 21.
The oil-water separation area is divided into an inner pool 4 and an outer pool 5, sewage is sent to the inner pool through a pipeline, the sewage flows from bottom to top, small bubbles are attached to oil in water under the action of an air blower 8 to realize oil-water separation, the sewage enters the outer pool from the inner pool and flows into the ozone catalytic oxidation filter pool 2 from a water outlet at the bottom of the outer pool, and the oil floats on the surface of the pool and is discharged through an oil skimmer 14 of the oil-water separation area.
Ozone catalytic oxidation filtering pond 2 divide into reaction tank 6 and stabilization tank 7, sewage is the reaction tank 6 of process from bottom to top earlier, be equipped with catalyst filter material 15 in the reaction tank 6, can convert the ozone that ozone generation system 10 provided into the hydroxyl free radical that the oxidability is stronger, under the combined action of ozone with difficult degradation organic matter broken chain decomposition for easily degrading small molecule substance in the sewage, the sewage flows into stabilization tank 7 after handling, make ozone carry out the self-decomposition in the sewage, it constitutes to go out water from flowing into aeration biological filter 3, be equipped with ozone tail gas destructor 11 on stabilization tank 7 top of the pool simultaneously, discharge in the air after decomposing ozone into oxygen. After the catalytic ozonation filter 2 operates for a certain time, the filter material is blocked to a certain extent, so that the catalytic ozonation filter scrubbing fan 9 and the scrubbing water pump 12 need to be started to backwash the filter material, and meanwhile, a vent pipe 18 of the catalytic ozonation filter and a backwash water outlet pipe 21 of the catalytic ozonation filter are additionally arranged for equipment maintenance in the filter.
The aeration biological filter 3 adopts a lower inlet and upper outlet mode, sewage flows through the aeration biological filter material 16 from bottom to top, the adopted filter material is light polyurethane filter material with high volume load and is not easy to block, the aeration biological filter fan 13 performs blast aeration on the filter to ensure that the filter is in an aerobic state, microorganisms in the filter material use oxygen as an electron acceptor to degrade degradable organic matters into carbon dioxide and water, thereby reducing the COD content of a sewage plant, and simultaneously effectively converting ammonia nitrogen in the sewage into nitrate nitrogen to realize the standard discharge of the ammonia nitrogen. Because the adopted filter material has higher biofilm formation amount in unit volume, the filter has high treatment efficiency and strong shock resistance, and can effectively deal with the shock caused by water inlet fluctuation. After the filter tank operates for a certain time, the filter material is blocked to a certain degree, so that the aeration biological filter tank fan 13 needs to be started to backwash the filter material, and meanwhile, a vent pipe 19 of the aeration biological filter tank and a backwash water outlet pipe 20 of the aeration biological filter tank are additionally arranged for facilitating equipment maintenance in the tank.
The utility model discloses process flow is simple, start the functioning speed very fast, shock resistance is strong, water quality treatment is effectual and stable. After the device is operated for 6 months, the operation effect is stable, the effluent quality meets the expected requirement, and the specific inlet and outlet water quality is shown in the following table.
Figure 325658DEST_PATH_IMAGE001
The above-described embodiment is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the invention as set forth in the claims.

Claims (10)

1. An advanced treatment device for petroleum-containing wastewater comprises an oil-water separation zone, an ozone catalytic oxidation filter and an aeration biological filter which are sequentially connected, and is characterized in that the oil-water separation zone comprises an inner tank and an outer tank, the inner tank is sleeved in the outer tank, the outer tank is communicated with the upper side of the inner tank and is connected in an overflow mode, the bottom of the inner tank is provided with an inner tank water inlet, and the bottom of the outer tank is provided with an outer tank water outlet;
the ozone catalytic oxidation filter tank comprises a reaction tank and a stabilization tank, wherein the reaction tank is communicated with the upper side of the stabilization tank and is connected with the stabilization tank in an overflow mode;
the bottom end of the biological aerated filter is provided with a water inlet of the biological aerated filter, the upper side of the biological aerated filter is provided with a water outlet of the biological aerated filter, and a filtering material of the biological aerated filter is arranged in the biological aerated filter;
the water outlet of the outer tank is communicated with the water inlet of the reaction tank, and the water outlet of the stabilization tank is communicated with the water inlet of the biological aerated filter.
2. The apparatus as claimed in claim 1, wherein an oil-water separation area skimmer is disposed on the upper side of the outer tank in the oil-water separation area.
3. The advanced treatment device for petroleum-containing wastewater as claimed in claim 1, wherein a catalyst filter material is arranged in the reaction tank, and the reaction tank is communicated with an ozone generation system through a pipeline.
4. The deep treatment device for petroleum-containing wastewater as set forth in claim 1, wherein the water inlet of the inner tank is connected to an oil-water separation zone blower.
5. The deep treatment device for the oil-containing wastewater according to claim 1, wherein the bottom of the reaction tank is communicated with an ozone catalytic oxidation filter scrubbing fan, a scrubbing water pump is communicated between the bottoms of the reaction tank and the stabilization tank through a pipeline, and the upper side of the reaction tank is connected with an ozone filter backwashing water outlet pipe.
6. The advanced treatment device for petroleum-containing wastewater as claimed in claim 1, wherein the bottom parts of the reaction tank and the stabilization tank are respectively communicated with an emptying pipe of the ozone catalytic oxidation filter.
7. The advanced treatment device for petroleum-containing wastewater as claimed in claim 1, wherein the upper end of the stabilization tank is communicated with an ozone tail gas destructor.
8. The deep treatment device for petroleum-containing wastewater according to claim 1, wherein the bottom of the biological aerated filter is communicated with a biological aerated filter blow-down pipe, and the upper side of the biological aerated filter is communicated with a biological aerated filter backwashing water outlet pipe.
9. The apparatus as claimed in claim 1, wherein the filter material of the biological aerated filter is arranged in multiple layers and fixed by a frame in layers.
10. The apparatus as claimed in claim 9, wherein the filter material of the biological aerated filter has 2 layers, the packing rate of the lower filter material layer is 70-80%, and the packing rate of the upper filter material layer is more than 90%.
CN202221969711.6U 2022-07-28 2022-07-28 Deep treatment device for petroleum-containing wastewater Active CN217921789U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221969711.6U CN217921789U (en) 2022-07-28 2022-07-28 Deep treatment device for petroleum-containing wastewater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221969711.6U CN217921789U (en) 2022-07-28 2022-07-28 Deep treatment device for petroleum-containing wastewater

Publications (1)

Publication Number Publication Date
CN217921789U true CN217921789U (en) 2022-11-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
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