A kind of system for petrochemical wastewater processing
It is on December 10th, 2014 applying date that the present invention, which is, and Application No. 201410758357.6 is entitled " a kind of
The divisional application of the patent of invention of the efficient process system of petrochemical wastewater ".
Technical field
The present invention relates to sewage treatment field, and in particular to a kind of system for petrochemical wastewater processing.
Background technology
Petroleum chemical industry can produce substantial amounts of oily wastewater, simultaneously as the particularity of petroleum chemical industry, usually dirty
Also contain lead ion in water.At present, also there are the numerous method and systems for being used to handle oily wastewater of document report, but its most nothing
Method is at the same time handled lead ion, oily components, and often most lead ion is deposited in the precipitating sludge in subsequent biochemical pond
In, leaded sludge is formed, it is more difficult to handle.
The content of the invention
It is an object of the invention to provide a kind of system for petrochemical wastewater processing, it can be in oily waste water
Oily components are recycled, while the lead ion in sewage is handled.
To achieve the above object, present invention employs following technical scheme:
A kind of system for petrochemical wastewater processing, including set gradually, is preceding latter linked thick to waste oil water progress
The rough filtering device of filtering, to waste oil water neutralize the regulating reservoir of adjusting, and separated ion is carried out to the lead ion in waste oil water
Oily components in waste oil water are carried out separated oil-water separation tank, the sewage after separation are carried out by sedimentation basin/ionic adsorption pond
The aeration tank of biochemical treatment and the sand filtering device that sand filtration is carried out to the sewage after biochemical treatment, the liquid outlet of oil-water separation tank are set
Hydrophilic and oleophobic filtration apparatus is put, oil-water separation tank is connected with oily components retracting device.Oily components retracting device is caught back
The oily components of receipts can be recycled.
Detailed scheme is:The throwing of the magnetic biological adsorption agent for adding adsorpting lead ion is provided with ionic adsorption pond
Material mouth/add mechanism, the bottom of pond in ionic adsorption pond sets air-blowing mouth, sets filter at air-blowing mouth, ionic adsorption pond is set up in parallel
Have multiple, filtration apparatus is provided between ionic adsorption pond and oil-water separation tank.It is provided with ion precipitation pond for adding wadding
The feeding port of solidifying agent/add mechanism, is provided with the tracheae of vertical shape arrangement, gas is uniformly arranged on the tube wall of tracheae in ion precipitation pond
Hole, filter is set at gas port, and precipitation separate tank is provided between ion precipitation pond and oil-water separation tank, and precipitation separate tank is set side by side
Put multiple.Flocculant can be polyacrylamide, one kind in Sodium Polyacrylate or its mixture.Set multiple ionic adsorption ponds or
The purpose for precipitating separate tank is mainly to ensure the continuity of sewage disposal, when avoiding because of single pond body progress precipitation process, entirely
The other equipment of sewage disposal system is just out of service, improves the continuity and efficiency of whole system operation.Meanwhile aeration tank
It is set up in parallel multiple.
Hydrophilic and oleophobic filtration apparatus includes hydrophilic and oleophobic film, and hydrophilic and oleophobic film is obtained by operating as follows:By 600 purposes not
Rust steel mesh first cleans 20min with dipping by lye, is then cleaned by ultrasonic 20min with organic solvent, by stainless (steel) wire after ultrasonic cleaning
Dry;Then stainless (steel) wire is placed in the first compositional liquor and is cleaned with deionized water after impregnating 54h, dipping and dried in the air naturally
It is dry;Stainless (steel) wire is finally impregnated into 20h in the second compositional liquor, simultaneously naturally dry, You Jirong are cleaned with deionized water after taking-up
Agent is ethanol and acetone according to 1.5:1 volume ratio is prepared to obtain, and the first compositional liquor is trishydroxymethylaminomethane, hydrochloric acid DOPA
Amine and hydrochloric acid solution are prepared to obtain, and trishydroxymethylaminomethane content is 8.2g/L, Dopamine hydrochloride content in the first compositional liquor
For 5.6g/L, pH=8.5;Second compositional liquor is thioacetic acid, sulfosuccinic acid, sodium hydroxide are prepared to obtain, the second compositional liquor
Middle thioacetic acid content is 2.48g/L, sulfosuccinic acid content is 3.8g/L, pH=12.5.
Hydrophilic and oleophobic film obtained above, by detection, the contact angle of itself and water droplet is 0 °, and the contact angle with oil droplet is
142 °, when oil water mixture is filtered, oily components can be by effectively catching, and water phase components can then pass through,
Therefore, grease can quickly be separated.Meanwhile whether above-mentioned hydrophilic and oleophobic film can also eliminate the lead ion in sewage
It is detected, is eliminated if lead ion is unadsorbed, with the active group on hydrophilic and oleophobic film chelation reaction can occur for lead ion, with
The continuous absorption of lead ion, the hydrophily of hydrophilic and oleophobic film gradually reduces, lipophile gradually strengthens, and ultimately becomes oleophilic drainage
Film, in the process hydrophilic and oleophobic film can not just play the role of grease and efficiently separate.And for petrochemical plant, it is discharged
Waste water in plumbum ion concentration be unstable, when plumbum ion concentration changes greatly, the often throwing of adsorbent or precipitating reagent
Dosage will be very few, can not just eliminate lead ion at this time.Therefore, in the present invention, oil-water separation tank sewage flow direction is divided into phase
The A section ponds and B sections of ponds mutually isolated, B sections of ponds are divided into the B1 ponds and B2 ponds mutually completely cut off, and A sections of ponds open up respectively to be used for and B1 ponds
First and second liquid outlet being connected with B2 ponds, sets hydrophilic and oleophobic filtration apparatus at first and second liquid outlet respectively.When in use
A pond in only B sections of pond is connected with A sections of ponds, and without using the hydrophilic and oleophobic filtration apparatus on liquid outlet on A sections of ponds
Isolate with the pond liquid phase in A sections of ponds.When lead ion does not eliminate, with the hydrophilic and oleophobic film that the pond liquid phase in A sections of ponds contacts because
Adsorpting lead ion cause it is hydrophilic and oleophobic sexually revise, grease can not be efficiently separated, at this time part oily components will enter use
B sections pond in, therefore when there are oily components in detecting B sections of ponds, the system of front and continued is checked and/or is increased flocculation
Agent, the dosage of adsorbent so that lead ion eliminate completely.After above-mentioned measure obtains effect, then another B sections of pond is enabled, with
This clears up the B sections pond polluted by oily components and the hydrophilic and oleophobic filtration apparatus of denaturation is replaced at the same time, with
Standby next time uses.So that the oily components, water phase components in grease can be kept completely separate, lead ion can completely by except
Go, ensure the reliable treatments of leaded waste oil water.
Rough filtering device, regulating reservoir, aeration tank, sand filtering device, filtration apparatus, precipitation separate tank, oily components retracting device
The equipment in existing sewage disposal system existing and there is identical function is can refer to be implemented.
The efficient process system of above-mentioned petrochemical wastewater provided by the invention, it can be complete to lead ion in leaded waste oil water
It is complete to remove, and oily components and aqueous components are reliably separated, oily components are carried out with fishing reuse, and reduce
The cost of follow-up biochemical treatment and cycle, realize the efficient process of waste water.
Brief description of the drawings
Fig. 1 is the schematic diagram of the first embodiment of waste water treatment system;
Fig. 2 is the schematic diagram of second of embodiment of waste water treatment system;
Fig. 3 is the structure diagram of oil-water separation tank.
Embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is carried out specifically with reference to embodiments
It is bright.It should be appreciated that following word only to describe the present invention one or more of specific embodiments, not to the present invention
The protection domain specifically asked carries out considered critical.
Implement 1
As shown in Figure 1,3, the efficient process system of petrochemical wastewater, including set gradually, is preceding latter linked to waste oil
Water carries out the rough filtering device 11 of coarse filtration, waste oil water is carried out to neutralize the regulating reservoir 12 for adjusting pH, to the lead ion in waste oil water
Separated 131/ ionic adsorption pond 132 of ion precipitation pond is carried out, separated water-oil separating is carried out to the oily components in waste oil water
Pond 15, carries out the sewage after separation the aeration tank 16 of biochemical treatment and the sand filtration of sand filtration is carried out to the sewage after biochemical treatment
Device 17, oil-water separation tank 15 are connected with oily components retracting device.It is provided with ionic adsorption pond 132 for adding absorption
The feeding port of the magnetic biological adsorption agent of lead ion/add mechanism, the bottom of pond in ionic adsorption pond 132 sets air-blowing mouth, air-blowing mouth
Place sets filter, and ionic adsorption pond 132 is set side by side with multiple, is provided between ionic adsorption pond 132 and oil-water separation tank 15
Filtration apparatus 141.15 sewage of oil-water separation tank flow direction is divided into mutually isolated A section ponds and B sections of ponds, B sections of ponds be divided into mutually every
Exhausted B1 ponds and B2 ponds, A sections of ponds open up first and second liquid outlet for being connected with B1 ponds and B2 ponds respectively.
Hydrophilic and oleophobic film is obtained by operating as follows:The stainless (steel) wire of 600 mesh is first cleaned into 20min with dipping by lye, so
It is cleaned by ultrasonic 20min with organic solvent afterwards, dries stainless (steel) wire after ultrasonic cleaning;Stainless (steel) wire is then placed in the first compounding
In liquid simultaneously naturally dry is cleaned with deionized water after dipping 54h, dipping;Finally stainless (steel) wire is soaked in the second compositional liquor
Stain 20h, is cleaned with deionized water after taking-up and naturally dry, organic solvent is ethanol and acetone according to 1.5:1 volume ratio is matched somebody with somebody
It is made, the first compositional liquor is prepared to obtain for trishydroxymethylaminomethane, Dopamine hydrochloride and hydrochloric acid solution, in the first compositional liquor
Trishydroxymethylaminomethane content is 8.2g/L, Dopamine hydrochloride content is 5.6g/L, pH=8.5;Second compositional liquor is sulfydryl
Acetic acid, sulfosuccinic acid, sodium hydroxide are prepared to obtain, and thioacetic acid content is 2.48g/L, sulfosuccinic acid in the second compositional liquor
Content is 3.8g/L, pH=12.5.
Hydrophilic and oleophobic film is assembled on hydrophilic and oleophobic filtration apparatus 153, then hydrophilic and oleophobic filtration apparatus 153 is installed
At first and second liquid outlet in A sections of ponds.First liquid outlet 151 in A sections of ponds is enabled, the second liquid outlet 152 is closed, and is started thick
Filter device 11, regulating reservoir, ionic adsorption pond 132, filtration apparatus 141, A sections of ponds, B1 ponds, oil-water separation tank 15, aeration tank 16, sand
Device 17, oily components retracting device are filtered, leaded waste oil water is injected the system carries out continuous processing.Go out if detecting in B1 ponds
Existing oil phase component, then close the liquid outlet in B1 ponds, is checked the system of front and continued and/or added the dosage of adsorbent, so that
Lead ion eliminates completely.After above-mentioned measure obtain effect, A sections of the first liquid outlets of pond 151 are closed, open the second liquid outlet 152,
Start B2 ponds to be run, the B1 ponds polluted by oily components are cleared up and to the hydrophilic and oleophobic of denaturation while operation
Filtration apparatus 153 is replaced, and is used in case replacing B sections of ponds next time.Enable oily components, water phase components in grease complete
Fully separating, lead ion can be completely removed, and ensure the reliable treatments of leaded waste oil water.
Embodiment 2
As shown in Figure 2,3, the efficient process system of petrochemical wastewater, including set gradually, is preceding latter linked to waste oil
Water carries out the rough filtering device 11 of coarse filtration, waste oil water is carried out to neutralize the regulating reservoir 12 for adjusting pH, to the lead ion in waste oil water
Separated 131/ ionic adsorption pond 132 of ion precipitation pond is carried out, separated water-oil separating is carried out to the oily components in waste oil water
Pond 15, carries out the sewage after separation the aeration tank 16 of biochemical treatment and the sand filtration of sand filtration is carried out to the sewage after biochemical treatment
Device 17, oil-water separation tank 15 are connected with oily components retracting device.It is provided with ion precipitation pond 131 for adding flocculation
The feeding port of agent/add mechanism, is provided with the tracheae of vertical shape arrangement, is uniformly arranged on the tube wall of tracheae in ion precipitation pond 131
Stomata, filter is set at gas port, and precipitation separate tank 142, precipitation point are provided between ion precipitation pond 131 and oil-water separation tank 15
It is set up in parallel from pond 142 multiple.15 sewage of oil-water separation tank flow direction is divided into mutually isolated A section ponds and B sections of ponds, and B sections of ponds separate
For the B1 ponds and B2 ponds mutually completely cut off, A sections of ponds open up first and second liquid outlet for being connected with B1 ponds and B2 ponds respectively.
Hydrophilic and oleophobic film is obtained by operating as follows:The stainless (steel) wire of 600 mesh is first cleaned into 20min with dipping by lye, so
It is cleaned by ultrasonic 20min with organic solvent afterwards, dries stainless (steel) wire after ultrasonic cleaning;Stainless (steel) wire is then placed in the first compounding
In liquid simultaneously naturally dry is cleaned with deionized water after dipping 54h, dipping;Finally stainless (steel) wire is soaked in the second compositional liquor
Stain 20h, is cleaned with deionized water after taking-up and naturally dry, organic solvent is ethanol and acetone according to 1.5:1 volume ratio is matched somebody with somebody
It is made, the first compositional liquor is prepared to obtain for trishydroxymethylaminomethane, Dopamine hydrochloride and hydrochloric acid solution, in the first compositional liquor
Trishydroxymethylaminomethane content is 8.2g/L, Dopamine hydrochloride content is 5.6g/L, pH=8.5;Second compositional liquor is sulfydryl
Acetic acid, sulfosuccinic acid, sodium hydroxide are prepared to obtain, and thioacetic acid content is 2.48g/L, sulfosuccinic acid in the second compositional liquor
Content is 3.8g/L, pH=12.5.
Hydrophilic and oleophobic film is assembled on hydrophilic and oleophobic filtration apparatus 153, then hydrophilic and oleophobic filtration apparatus 153 is installed
At first and second liquid outlet in A sections of ponds.First liquid outlet 151 in A sections of ponds is enabled, the second liquid outlet 152 is closed, and is started thick
Filter device 11, regulating reservoir, ion precipitation pond 131, precipitation separate tank 142, A sections of ponds, B1 ponds, oil-water separation tank 15, aeration tank 16,
Sand filtering device 17, oily components retracting device, inject the system by leaded waste oil water and carry out continuous processing.If detect in B1 ponds
There is oil phase component, then close the liquid outlet in B1 ponds, checked the system of front and continued and/or added the dosage of adsorbent, so that
Lead ion eliminate completely.After above-mentioned measure obtains effect, A sections of the first liquid outlets of pond 151 are closed, open the second liquid outlet
152, start B2 ponds and run, the B1 ponds polluted by oily components are cleared up and to the hydrophilic of denaturation while operation
Oleophobic filtration apparatus 153 is replaced, and is used in case replacing B sections of ponds next time.Enable oily components, water phase components in grease
Enough be kept completely separate, lead ion can be completely removed, ensure the reliable treatments of leaded waste oil water.
Embodiment 3
As shown in Figure 1,3, the efficient process system of petrochemical wastewater, including set gradually, is preceding latter linked to waste oil
Water carries out the rough filtering device 11 of coarse filtration, waste oil water is carried out to neutralize the regulating reservoir 12 for adjusting pH, to the lead ion in waste oil water
Separated 131/ ionic adsorption pond 132 of ion precipitation pond is carried out, separated water-oil separating is carried out to the oily components in waste oil water
Pond 15, carries out the sewage after separation the aeration tank 16 of biochemical treatment and the sand filtration of sand filtration is carried out to the sewage after biochemical treatment
Device 17, oil-water separation tank 15 are connected with oily components retracting device.It is provided with ionic adsorption pond 132 for adding absorption
The feeding port of the magnetic biological adsorption agent of lead ion/add mechanism, the bottom of pond in ionic adsorption pond 132 sets air-blowing mouth, air-blowing mouth
Place sets filter, and ionic adsorption pond 132 is set side by side with multiple, is provided between ionic adsorption pond 132 and oil-water separation tank 15
Filtration apparatus 141.15 sewage of oil-water separation tank flow direction is divided into mutually isolated A section ponds and B sections of ponds, B sections of ponds be divided into mutually every
Exhausted B1 ponds and B2 ponds, A sections of ponds open up first and second liquid outlet for being connected with B1 ponds and B2 ponds respectively.
Hydrophilic and oleophobic film is obtained by operating as follows:The stainless (steel) wire of 600 mesh is first cleaned into 20min with dipping by lye, so
It is cleaned by ultrasonic 20min with organic solvent afterwards, dries stainless (steel) wire after ultrasonic cleaning;Stainless (steel) wire is then placed in the first compounding
In liquid simultaneously naturally dry is cleaned with deionized water after dipping 54h, dipping;Finally stainless (steel) wire is soaked in the second compositional liquor
Stain 20h, is cleaned with deionized water after taking-up and naturally dry, organic solvent is ethanol and acetone according to 1.5:1 volume ratio is matched somebody with somebody
It is made, the first compositional liquor is prepared to obtain for trishydroxymethylaminomethane, Dopamine hydrochloride and hydrochloric acid solution, in the first compositional liquor
Trishydroxymethylaminomethane content is 8.2g/L, Dopamine hydrochloride content is 5.6g/L, pH=8.5;Second compositional liquor is poly- third
Alkene free radical polyalcohol, sulfosuccinic acid, sodium hydroxide are prepared to obtain, polypropylene free radical polyalcohol content in the second compositional liquor
It is 1.25g/L, pH=13 for 4.5g/L, sulfosuccinic acid content;Polypropylene free radical polyalcohol is 1 parts by weight propylene acid monomers
It is dissolved in the distilled water of 2.5 parts by weight, adds the n- dodecyl mereaptan of 0.03 parts by weight and 4, the 4'- azos pair of 0.025 parts by weight
(cyanopentanoic acid), reacts 0.8h at 55 DEG C under nitrogen protection, then is warming up to 75 DEG C of reaction 6.5h, filters, washes after reaction
Wash, is dry obtained.
Hydrophilic and oleophobic film is assembled on hydrophilic and oleophobic filtration apparatus 153, then hydrophilic and oleophobic filtration apparatus 153 is installed
At first and second liquid outlet in A sections of ponds.First liquid outlet 151 in A sections of ponds is enabled, the second liquid outlet 152 is closed, and is started thick
Filter device 11, regulating reservoir, ionic adsorption pond 132, filtration apparatus 141, A sections of ponds, B1 ponds, oil-water separation tank 15, aeration tank 16, sand
Device 17, oily components retracting device are filtered, leaded waste oil water is injected the system carries out continuous processing.Go out if detecting in B1 ponds
Existing oil phase component, then close the liquid outlet in B1 ponds, is checked the system of front and continued and/or added the dosage of adsorbent, so that
Lead ion eliminates completely.After above-mentioned measure obtain effect, A sections of the first liquid outlets of pond 151 are closed, open the second liquid outlet 152,
Start B2 ponds to be run, the B1 ponds polluted by oily components are cleared up and to the hydrophilic and oleophobic of denaturation while operation
Filtration apparatus 153 is replaced, and is used in case replacing B sections of ponds next time.Enable oily components, water phase components in grease complete
Fully separating, lead ion can be completely removed, and ensure the reliable treatments of leaded waste oil water.
Embodiment 4
As shown in Figure 2,3, the efficient process system of petrochemical wastewater, including set gradually, is preceding latter linked to waste oil
Water carries out the rough filtering device 11 of coarse filtration, waste oil water is carried out to neutralize the regulating reservoir 12 for adjusting pH, to the lead ion in waste oil water
Separated 131/ ionic adsorption pond 132 of ion precipitation pond is carried out, separated water-oil separating is carried out to the oily components in waste oil water
Pond 15, carries out the sewage after separation the aeration tank 16 of biochemical treatment and the sand filtration of sand filtration is carried out to the sewage after biochemical treatment
Device 17, oil-water separation tank 15 are connected with oily components retracting device.It is provided with ion precipitation pond 131 for adding flocculation
The feeding port of agent/add mechanism, is provided with the tracheae of vertical shape arrangement, is uniformly arranged on the tube wall of tracheae in ion precipitation pond 131
Stomata, filter is set at gas port, and precipitation separate tank 142, precipitation point are provided between ion precipitation pond 131 and oil-water separation tank 15
It is set up in parallel from pond 142 multiple.15 sewage of oil-water separation tank flow direction is divided into mutually isolated A section ponds and B sections of ponds, and B sections of ponds separate
For the B1 ponds and B2 ponds mutually completely cut off, A sections of ponds open up first and second liquid outlet for being connected with B1 ponds and B2 ponds respectively.
Hydrophilic and oleophobic film is obtained by operating as follows:The stainless (steel) wire of 600 mesh is first cleaned into 20min with dipping by lye, so
It is cleaned by ultrasonic 20min with organic solvent afterwards, dries stainless (steel) wire after ultrasonic cleaning;Stainless (steel) wire is then placed in the first compounding
In liquid simultaneously naturally dry is cleaned with deionized water after dipping 54h, dipping;Finally stainless (steel) wire is soaked in the second compositional liquor
Stain 20h, is cleaned with deionized water after taking-up and naturally dry, organic solvent is ethanol and acetone according to 1.5:1 volume ratio is matched somebody with somebody
It is made, the first compositional liquor is prepared to obtain for trishydroxymethylaminomethane, Dopamine hydrochloride and hydrochloric acid solution, in the first compositional liquor
Trishydroxymethylaminomethane content is 8.2g/L, Dopamine hydrochloride content is 5.6g/L, pH=8.5;Poly- third in second compositional liquor
Alkene free radical polyalcohol content is 4.5g/L, sulfosuccinic acid content is 1.25g/L, pH=13;Polypropylene free radical polyalcohol
It is dissolved in for 1 parts by weight propylene acid monomers in the distilled water of 2.5 parts by weight, adds the n- dodecyl mereaptan and 0.025 of 0.03 parts by weight
4, the 4'- azos of parts by weight are double (cyanopentanoic acid), react 0.8h at 55 DEG C under nitrogen protection, then be warming up to 75 DEG C of reactions
6.5h, filters, washs, is dry obtained after reaction.
Hydrophilic and oleophobic film is assembled on hydrophilic and oleophobic filtration apparatus 153, then hydrophilic and oleophobic filtration apparatus 153 is installed
At first and second liquid outlet in A sections of ponds.First liquid outlet 151 in A sections of ponds is enabled, the second liquid outlet 152 is closed, and is started thick
Filter device 11, regulating reservoir, ion precipitation pond 131, precipitation separate tank 142, A sections of ponds, B1 ponds, oil-water separation tank 15, aeration tank 16,
Sand filtering device 17, oily components retracting device, inject the system by leaded waste oil water and carry out continuous processing.If detect in B1 ponds
There is oil phase component, then close the liquid outlet in B1 ponds, checked the system of front and continued and/or added the dosage of adsorbent, so that
Lead ion eliminate completely.After above-mentioned measure obtains effect, A sections of the first liquid outlets of pond 151 are closed, open the second liquid outlet
152, start B2 ponds and run, the B1 ponds polluted by oily components are cleared up and to the hydrophilic of denaturation while operation
Oleophobic filtration apparatus 153 is replaced, and is used in case replacing B sections of ponds next time.Enable oily components, water phase components in grease
Enough be kept completely separate, lead ion can be completely removed, ensure the reliable treatments of leaded waste oil water.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, after content described in the present invention is known, without departing from the principle of the present invention, it can also be made some
Equal conversion and replacement, these, which convert and substitute on an equal basis, also should be regarded as belonging to protection scope of the present invention.