CN105384310A - Treatment device for alkali wastewater from oil refinery - Google Patents
Treatment device for alkali wastewater from oil refinery Download PDFInfo
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- CN105384310A CN105384310A CN201510867666.1A CN201510867666A CN105384310A CN 105384310 A CN105384310 A CN 105384310A CN 201510867666 A CN201510867666 A CN 201510867666A CN 105384310 A CN105384310 A CN 105384310A
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Abstract
The invention relates to a treatment device for alkali wastewater from an oil refinery. The treatment device comprises a regulating reservoir, a pickling mixing pool, a pickling separation pool, an extraction mixing pool, an extraction separation pool, a filler type hypoxia anaerobic reaction pool and a contraflow biological aerated filter; a pickling mixing pool water inlet pipe is arranged at the bottom of the pickling mixing pool; an acid liquid adding and metering system is arranged at the upper-middle part of the pickling mixing pool; a pickling mixing pool stirring device is arranged at the middle of the pickling mixing pool; the pickling separation pool sequentially comprises a pickling separation pool mixing area and a pickling separation pool separating area from bottom to top; an extraction mixing pool water inlet pipe is arranged at the bottom of the extraction mixing pool; an extracting agent adding and metering system is arranged at the upper-middle part of the extraction mixing pool; the extraction separation pool sequentially comprises an extraction separation pool mixing area and an extraction separation pool separating area from bottom to top; the filler type hypoxia anaerobic reaction pool comprises a facultative aerobic zone, an anoxic zone and an anaerobic zone which are separated by separation boards; the contraflow biological aerated filter comprises a downward flow area, an upward flow area and a sludge area.
Description
Technical field
The present invention relates to environmental technology field, be specifically related to a kind of Refinery Basic Sewage treatment unit.
Background technology
In the process of refining oil, in order to obtain purified product, the alkaline solutions such as conventional sodium hydroxide wash the liquefied gas produced and gasoline etc., thus cause the generation of a large amount of alkaline waste water.Because alkaline waste water composition is complicated, the phenols containing high density, sulfide, wet goods many kinds of substance, be difficult to effectively process.
The treatment process of Refinery Basic Sewage can be divided into physics, chemistry and biochemical treatment three major types.At present, conventional method has steaming process, absorption method, liquid-liquid extraction method, membrane separation process, ion exchange method, advanced oxidation, chemical precipitation, biochemical treatment process etc.Steam dephenolize method utilizes to form the characteristic of azeotropic mixture with water vapor containing Volatile Phenols in phenol alkaline waste water, when the vapour pressure of Volatile Phenols and the vapour pressure sum of water vapor exceed ambient pressure, just come to life containing phenol alkaline waste water, and promote that Volatile Phenols proceeds to gaseous state by liquid state.Absorption method utilizes the phenolic compound in the surface adsorption alkaline waste water of porous solid sorbent material, is mainly used in the process of low-concentration industrial alkaline waste water, and its use range is wide, treatment effect is good, but high to inflow requirement, and running expense is expensive, system is huge, troublesome poeration.Extraction process mainly utilizes the extraction agent being insoluble in water to contact with alkaline waste water, the phenolic compound in alkaline waste water is transferred to solvent phase from aqueous phase, thus reaches the object be separated with water; Be divided into physical extraction and chemical extraction; General solvent extraction mostly is physical extraction, and its processing efficiency is low, and solvent not easily reclaims; And chemical extraction method is with complex reaction, have high efficiency, highly selective, extractant regeneration is simple, reliable, and anti-shock loading is strong, and power consumption is little, and secondary pollution is little, and running cost is low, is applicable to the alkaline waste water of high density, difficult for biological degradation.Ion exchange method utilizes the ion on ion-exchanger and the aldehydes matter in alkaline waste water carry out equivalent permutoid reaction and remove the process of phenol; There is clearance high, can concentration and recovery useful matter, equipment is simple, and operation controls easily, but higher to pre-processing requirements, and the process of the regeneration of ion-exchanger and regenerated liquid also comparatively difficulty.Chemical oxidization method utilizes the strong oxidizing property of some oxygenants by the process of the aldehydes matter oxidation removal in water; Conventional has air oxidation process, Ozonation, electrolytic process etc.; Technique is simple, and do not produce secondary pollution, but oxygenant can not reuse, running cost is higher.Chemical precipitation method is in alkaline waste water, add some chemical agent, makes the aldehydes matter generation chemical reaction in itself and alkaline waste water, forms carbonic acid phenol, phosphoric acid ester etc. that solubleness is less; What be applicable to process high density contains phenol alkaline waste water, and running cost is higher.Biochemical process mainly utilizes the metabolism of microorganism, and the aldehydes matter in degradation water, is transformed and be decomposed into H
2o and C0
2, thus realize innoxious object; Conventional biological process has activated sludge process, biological fluidized bed method, immobilized microorganisms etc.; Biochemical process applied range, processing power are large, equipment is simple, but require high to influent quality, and affect comparatively large by pH, aldehydes matter can not reclaim.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the process problem of above-mentioned alkaline waste water, the invention provides a kind of Refinery Basic Sewage treatment unit.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Refinery Basic Sewage treatment unit, comprises equalizing tank, pickling mixing pit, pickling separate tank, extraction mixing pit, extracting and separating pond, material filling type anoxic anaerobic reation pool and reflux formula BAF; Described equalizing tank, pickling mixing pit, pickling separate tank, extraction mixing pit, extracting and separating pond, material filling type anoxic anaerobic reation pool are communicated with successively with reflux formula BAF.
Described equalizing tank comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water.
Be provided with pickling mixing pit water inlet pipe bottom described pickling mixing pit, middle and upper part is provided with acid solution and adds metering system, is provided with pickling mixing pit whipping appts in the middle part of pickling mixing pit; Pickling mixing pit middle and upper part is provided with pickling mixing pit rising pipe.
Described pickling separate tank comprises pickling separate tank water inlet pipe and the pickling separate tank rising pipe for discharging the rear water of process, and described pickling separate tank is followed successively by pickling separate tank mixing zone and pickling separate tank disengaging zone from bottom to up, described pickling separate tank disengaging zone comprises pickling separate tank catchment area and is positioned at the carbolic oil district of pickling separate tank catchment area, the bottom of described pickling separate tank mixing zone is provided with pickling separate tank aeration plate, the top of described pickling separate tank aeration plate is provided with pickling separate tank water distributor, described pickling separate tank water distributor connects pickling separate tank water inlet pipe, and described pickling separate tank aeration plate is connected with the pickling separate tank gas blower outside pickling separate tank by pickling separate tank aeration tube, pickling separate tank triphase separator is provided with in described disengaging zone, described pickling separate tank triphase separator comprise pickling separate tank flow deflector and be positioned at below pickling separate tank flow deflector with pickling separate tank flow deflector with the use of pickling separate tank triangle guide ring, described pickling separate tank triangle guide ring is arranged on the inwall of pickling separate tank, the top of described pickling separate tank flow deflector is identical with the shape of pickling separate tank disengaging zone, the bottom of described pickling separate tank flow deflector is horn-like, the internal diameter of the bottom of described pickling separate tank flow deflector is greater than the internal diameter of pickling separate tank triangle guide ring, the top of described pickling separate tank disengaging zone outer wall is provided with pickling separate tank overfalling weir, and described pickling separate tank overfalling weir is connected with pickling separate tank rising pipe, described carbolic oil district is laid with scraper plate and carbolic oil groove, when waste water overflows from the bottom up, water enters the bottom of pickling separate tank flow deflector together with carbolic oil by pickling separate tank triangle guide ring, carbolic oil continues up to enter carbolic oil district, and water enters pickling separate tank catchment area by the gap between pickling separate tank flow deflector and pickling separate tank triangle guide ring, in order to the better effects if of wastewater treatment, described pickling separate tank water distributor is arranged to concentric circles or cross shape, and pickling separate tank water distributor has horizontal radiation water outlet, further, described pickling separate tank aeration plate is the pore type aeration plate being evenly provided with micropore.
Be provided with extraction mixing pit water inlet pipe bottom described extraction mixing pit, middle and upper part is provided with extraction agent and adds metering system, is provided with extraction mixing pit whipping appts in the middle part of extraction mixing pit; Extraction mixing pit rising pipe is provided with in extraction mixing pit middle and upper part.
Described extracting and separating pond comprises extracting and separating pond water inlet pipe and the extracting and separating pond rising pipe for discharging the rear water of process, and described extracting and separating pond is followed successively by mixing zone, extracting and separating pond and disengaging zone, extracting and separating pond from bottom to up, described disengaging zone, extracting and separating pond comprises catchment area, extracting and separating pond and is positioned at the extraction liquid zone of catchment area, extracting and separating pond, the bottom of mixing zone, extracting and separating pond is provided with extracting and separating pond aeration plate, the top of extracting and separating pond aeration plate is provided with extracting and separating pond water distributor, extracting and separating pond water distributor connects extracting and separating pond water inlet pipe, and described extracting and separating pond aeration plate is connected with the extracting and separating pond gas blower outside extracting and separating pond by aeration tube, extracting and separating pond triphase separator is provided with in disengaging zone, extracting and separating pond, described extracting and separating pond triphase separator comprise extracting and separating pond flow deflector and be positioned at below the flow deflector of extracting and separating pond with extracting and separating pond flow deflector with the use of extracting and separating pond triangle guide ring, described extracting and separating pond triangle guide ring is arranged on the inwall in extracting and separating pond, the top of described extracting and separating pond flow deflector is identical with the shape of disengaging zone, the bottom of described extracting and separating pond flow deflector is horn-like, the internal diameter of the bottom of described extracting and separating pond flow deflector is greater than the internal diameter of extracting and separating pond triangle guide ring, the top of disengaging zone, extracting and separating pond outer wall is provided with extracting and separating pond overfalling weir, and described extracting and separating pond overfalling weir is connected with extracting and separating pond rising pipe, described extraction liquid zone is laid with extraction liquid bath, when waste water overflows from the bottom up, water enters the bottom of extracting and separating pond flow deflector together with extraction liquid by extracting and separating pond triangle guide ring, extraction liquid continues up to enter extraction liquid zone, and water enters catchment area, extracting and separating pond by the gap between extracting and separating pond flow deflector and extracting and separating pond triangle guide ring, in order to the better effects if of wastewater treatment, described extracting and separating pond water distributor is arranged to concentric circles or cross shape, and extracting and separating pond water distributor has horizontal radiation water outlet, further, described extracting and separating pond aeration plate is the pore type aeration plate being evenly provided with micropore.
Described material filling type anoxic anaerobic reation pool comprises the double oxygen section, anoxic section and the anaerobism section that are become by baffle for separating, described double oxygen section head end is provided with the material filling type anoxic anaerobic reation pool water inlet pipe for feeding waste water, oxygen section end of holding concurrently is communicated with anoxic section head end, anoxic section end is communicated with anaerobism section head end, the bottom of described anoxic section and anaerobism section water inlet side dividing plate is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section end is provided with material filling type anoxic anaerobic reation pool triphase separator and material filling type anoxic anaerobic reation pool overfalling weir, material filling type anoxic anaerobic reation pool overfalling weir bonding pad formula anoxic anaerobic reation pool rising pipe; Described double oxygen section, anoxic section and the tapered structure of anaerobism section bottom design, pyramidal structure connects mud discharging valve; The upper cover design coning structure of the double oxygen section of described material filling type anoxic anaerobic reation pool, anoxic section and anaerobism section, conical structure top is provided with the effuser of methane waste product; Material filling type anoxic anaerobic reation pool filler is all provided with in described double oxygen section, anoxic section and anaerobism section.
Described reflux formula BAF middle and upper part is cylindrical, bottom is conical structure, comprises lower current area, ascending zone and mud district; Described lower current area is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with reflux formula BAF water inlet pipe and reflux formula BAF water distributor, lower current area filler is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube, the bottom of described lower current area is provided with traverse baffle, and the longitudinal section of described traverse baffle is horn-like; Described ascending zone is positioned at the periphery of lower current area, the top of traverse baffle, is provided with ascending zone filler in the middle part of ascending zone, and bottom is provided with ascending zone aeration tube, and the exit on ascending zone top is provided with reflux formula BAF overfalling weir; Described mud district is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with sediment discharge valve.
Adopt above-mentioned Refinery Basic Sewage treatment unit to carry out a method for wastewater treatment, there are following steps:
1. waste water enters equalizing tank by equalizing tank water inlet pipe, regulating water quality and the water yield.
2. the water after regulating enters pickling mixing pit by the pickling mixing pit water inlet pipe bottom pickling mixing pit, mixes, utilize pickling mixing pit whipping appts to be uniformly mixed with the acid solution of adding metering system from acid solution; Regulate the pH value of waste water to neutral, the waste water after hybrid reaction enters pickling separate tank water inlet pipe by pickling mixing pit rising pipe.
3. then waste water enters pickling separate tank by pickling separate tank water inlet pipe; The pickling separate tank aeration plate be positioned at below pickling separate tank water distributor produces a large amount of tiny bubble, the tiny bubble that pickling separate tank aeration plate produces and phenol, oil, dross adherence form mixture and rise under buoyancy, under the effect of pickling separate tank triphase separator, mixture rises to carbolic oil district, under the effect of scraper plate, phenol, oil and scum silica frost enter carbolic oil groove and cleaned outward transport; Water after separating treatment enters pickling separate tank catchment area under the effect of pickling separate tank flow deflector, enters extraction mixing pit water inlet pipe by pickling separate tank overfalling weir, pickling separate tank rising pipe.
4. waste water enters extraction mixing pit by the extraction mixing pit water inlet pipe bottom extraction mixing pit, mixes with the extraction agent adding metering system from extraction agent, utilizes extraction mixing pit whipping appts to be uniformly mixed; Waste water after hybrid reaction enters extracting and separating pond water inlet pipe by extraction mixing pit rising pipe.
5. then waste water enters extracting and separating pond by extracting and separating pond water inlet pipe; The extracting and separating pond aeration plate be positioned at below the water distributor of extracting and separating pond produces a large amount of tiny bubble, on the one hand waste water is uniformly mixed, aldehydes matter is transferred in extraction agent from waste water, on the other hand the tiny bubble that produces of extracting and separating pond aeration plate and extraction agent adhere to and form mixture and rise under buoyancy, under the effect of extracting and separating pond triphase separator, mixture rises to extraction liquid zone, flows into extraction liquid bath; Water after separating treatment enters catchment area, extracting and separating pond under the flow deflector effect of extracting and separating pond, enters material filling type anoxic anaerobic reation pool water inlet pipe by extracting and separating pond overfalling weir, extracting and separating pond rising pipe.
6. waste water enters the bottom of material filling type anoxic anaerobic reation pool by material filling type anoxic anaerobic reation pool water inlet pipe; Waste water advances up and down along dividing plate after entering material filling type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section, anoxic section and anaerobism section, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of dividing plate and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.Hydrolysis of organic matter in waste water is organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section, anoxic section and the anaerobism section held concurrently, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.The separation of mud, water, methane gas is realized under the material filling type anoxic anaerobic reation pool triphase separator effect that waste water after anaerobic reaction is provided with at anaerobism section end, mud sinks to the bottom of material filling type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve of bottom; The methane waste product that material filling type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser; Waste water after process enters reflux formula BAF water inlet pipe by material filling type anoxic anaerobic reation pool overfalling weir, material filling type anoxic anaerobic reation pool.
7. waste water is by reflux formula BAF water inlet pipe, reflux formula BAF water distributor enters the lower current area of reflux formula BAF, the air that lower current area aeration tube produces and waste water cross generation biochemical reaction in lower current area filler, lower current area filler filters waste water simultaneously, waste water is by entering ascending zone after traverse baffle, biochemical reaction is there is in ascending zone filler, ascending zone filler filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district, emitted by the sediment discharge valve bottom mud district, water after the process of reflux formula BAF is flowed out by reflux formula BAF overfalling weir, qualified discharge.
8. material filling type anoxic anaerobic reation pool, reflux formula BAF are discharged mud, throw out are transported outward after concentrated, dehydration.
The invention has the beneficial effects as follows: suit measures to local conditions, initial cost is few, easy to maintenance, and energy consumption is lower, has reasonable treatment effect to waste water.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of embodiment of the present invention pickling mixing pit.
In Fig. 1: 1. pickling mixing pit, 1-1. pickling mixing pit water inlet pipe, 1-2. acid solution adds metering system, 1-3. pickling mixing pit whipping appts, 1-4. pickling mixing pit rising pipe.
Fig. 2 is the structural representation of embodiment of the present invention pickling separate tank.
In Fig. 2: 2. pickling separate tank, 2-1. pickling separate tank water inlet pipe, 2-2. pickling separate tank water distributor, 2-3. pickling separate tank mixing zone, 2-4. pickling separate tank catchment area, 2-5. carbolic oil district, 2-6. pickling separate tank aeration plate, 2-7. pickling separate tank gas blower, 2-8. pickling separate tank triphase separator, 2-9. pickling separate tank overfalling weir, 2-10. scraper plate, 2-11. carbolic oil groove.
Fig. 3 is the structural representation of embodiment of the present invention extraction mixing pit.
In Fig. 3: 3. extract mixing pit, 3-1. extracts mixing pit water inlet pipe, and 3-2. extraction agent adds metering system, and 3-3. extracts mixing pit whipping appts, and 3-4. extracts mixing pit rising pipe.
Fig. 4 is the structural representation in embodiment of the present invention extracting and separating pond.
In Fig. 4: 4. extracting and separating pond, 4-1. extracting and separating pond water inlet pipe, 4-2. extracting and separating pond water distributor, mixing zone, 4-3. extracting and separating pond, catchment area, 4-4. extracting and separating pond, 4-5. extracts liquid zone, 4-6. extracting and separating pond aeration plate, 4-7. extracting and separating pond gas blower, 4-8. extracting and separating pond triphase separator, 4-9. extracting and separating pond overfalling weir, 4-10. extracts liquid bath.
Fig. 5 is the structural representation of embodiment of the present invention material filling type anoxic anaerobic reation pool.
In Fig. 5: 5. material filling type anoxic anaerobic reation pool, 5-1. dividing plate, 5-2. holds concurrently oxygen section, 5-3. anoxic section, 5-4. anaerobism section, 5-5. material filling type anoxic anaerobic reation pool water inlet pipe, 5-6. material filling type anoxic anaerobic reation pool triphase separator, 5-7. material filling type anoxic anaerobic reation pool overfalling weir, 5-8. mud discharging valve, 5-9. upper cover, 5-10. effuser, 5-11. material filling type anoxic anaerobic reation pool filler.
Fig. 6 is the structural representation of embodiment of the present invention reflux formula BAF.
In Fig. 6: 6. reflux formula BAF, 6-1. lower current area, 6-2. ascending zone, 6-3. mud district, 6-4. reflux formula BAF water inlet pipe, 6-5. reflux formula BAF water distributor, 6-6. lower current area filler, 6-7. lower current area aeration tube, 6-8. traverse baffle, 6-9. ascending zone filler, 6-10. reflux formula BAF overfalling weir, 6-11. sediment discharge valve.
Fig. 7 is the process flow sheet of the embodiment of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment
As shown in Fig. 1 ~ Fig. 7, a kind of Refinery Basic Sewage treatment unit of the present invention, comprises equalizing tank, pickling mixing pit 1, pickling separate tank 2, extraction mixing pit 3, extracting and separating pond 4, material filling type anoxic anaerobic reation pool 5 and reflux formula BAF 6; Described equalizing tank, pickling mixing pit 1, pickling separate tank 2, extraction mixing pit 3, extracting and separating pond 4, material filling type anoxic anaerobic reation pool 5 are communicated with successively with reflux formula BAF 6.
Described equalizing tank comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water.
Be provided with pickling mixing pit water inlet pipe 1-1 bottom described pickling mixing pit 1, middle and upper part is provided with acid solution and adds metering system 1-2, is provided with pickling mixing pit whipping appts 1-3 in the middle part of pickling mixing pit; Pickling mixing pit rising pipe 1-4 is provided with in pickling mixing pit middle and upper part.
Described pickling separate tank 2 comprises pickling separate tank water inlet pipe 2-1 and the pickling separate tank rising pipe for discharging the rear water of process, and described pickling separate tank is followed successively by pickling separate tank mixing zone 2-3 and pickling separate tank disengaging zone from bottom to up, described pickling separate tank disengaging zone comprises pickling separate tank catchment area 2-4 and is positioned at the carbolic oil district 2-5 of pickling separate tank catchment area, the bottom of described pickling separate tank mixing zone is provided with pickling separate tank aeration plate 2-6, the top of described pickling separate tank aeration plate 2-6 is provided with pickling separate tank water distributor 2-2, described pickling separate tank water distributor 2-2 connects pickling separate tank water inlet pipe 2-1, and described pickling separate tank aeration plate 2-6 is connected with the pickling separate tank gas blower 2-7 outside pickling separate tank by pickling separate tank aeration tube, pickling separate tank triphase separator 2-8 is provided with in described pickling separate tank disengaging zone, described pickling separate tank triphase separator 2-8 comprise pickling separate tank flow deflector and be positioned at below pickling separate tank flow deflector with pickling separate tank flow deflector with the use of pickling separate tank triangle guide ring, described pickling separate tank triangle guide ring is arranged on the inwall of pickling separate tank, the top of described pickling separate tank flow deflector is identical with the shape of pickling separate tank disengaging zone, the bottom of described pickling separate tank flow deflector is horn-like, the internal diameter of the bottom of described pickling separate tank flow deflector is greater than the internal diameter of pickling separate tank triangle guide ring, the top of described pickling separate tank disengaging zone outer wall is provided with pickling separate tank overfalling weir 2-9, and described pickling separate tank overfalling weir 2-9 is connected with pickling separate tank rising pipe, described carbolic oil district 2-5 is laid with scraper plate 2-10 and carbolic oil groove 2-11, when waste water overflows from the bottom up, water enters the bottom of pickling separate tank flow deflector together with carbolic oil by pickling separate tank triangle guide ring, carbolic oil continues up to enter carbolic oil district 2-5, and water enters pickling separate tank catchment area 2-4 by the gap between pickling separate tank flow deflector and pickling separate tank triangle guide ring, in order to the better effects if of wastewater treatment, described pickling separate tank water distributor is arranged to concentric circles or cross shape, and pickling separate tank water distributor 2-2 has horizontal radiation water outlet, further, described pickling separate tank aeration plate 2-6 is the pore type aeration plate being evenly provided with micropore.
Be provided with extraction mixing pit water inlet pipe 3-1 bottom described extraction mixing pit 3, middle and upper part is provided with extraction agent and adds metering system 3-2, is provided with extraction mixing pit whipping appts 3-3 in the middle part of extraction mixing pit; Extraction mixing pit rising pipe 3-4 is provided with in extraction mixing pit middle and upper part.
Described extracting and separating pond 4 comprises extracting and separating pond water inlet pipe 4-1 and the extracting and separating pond rising pipe for discharging the rear water of process, and described extracting and separating pond is followed successively by extracting and separating pond mixing zone 4-3 and disengaging zone, extracting and separating pond from bottom to up, described disengaging zone, extracting and separating pond comprises extracting and separating pond catchment area 4-4 and is positioned at the extraction liquid zone 4-5 of catchment area, extracting and separating pond, the bottom of mixing zone, extracting and separating pond is provided with extracting and separating pond aeration plate 4-6, the top of extracting and separating pond aeration plate is provided with extracting and separating pond water distributor 4-2, extracting and separating pond water distributor connects extracting and separating pond water inlet pipe 4-1, and described extracting and separating pond aeration plate 4-6 is connected with the extracting and separating pond gas blower 4-7 outside extracting and separating pond, extracting and separating pond triphase separator 4-8 is provided with in disengaging zone, extracting and separating pond, described extracting and separating pond triphase separator 4-8 comprise extracting and separating pond flow deflector and be positioned at below the flow deflector of extracting and separating pond with extracting and separating pond flow deflector with the use of extracting and separating pond triangle guide ring, described extracting and separating pond triangle guide ring is arranged on the inwall in extracting and separating pond, the top of described extracting and separating pond flow deflector is identical with the shape of disengaging zone, the bottom of described extracting and separating pond flow deflector is horn-like, the internal diameter of the bottom of described extracting and separating pond flow deflector is greater than the internal diameter of extracting and separating pond triangle guide ring, the top of disengaging zone, extracting and separating pond outer wall is provided with extracting and separating pond overfalling weir 4-9, and described extracting and separating pond overfalling weir 4-9 is connected with extracting and separating pond rising pipe, described extraction liquid zone is laid with extraction liquid bath 4-10, when waste water overflows from the bottom up, water enters the bottom of extracting and separating pond flow deflector together with extraction liquid by extracting and separating pond triangle guide ring, extraction liquid continues up to enter extraction liquid zone 4-5, and water enters extracting and separating pond catchment area 4-4 by the gap between extracting and separating pond flow deflector and extracting and separating pond triangle guide ring, in order to the better effects if of wastewater treatment, described extracting and separating pond water distributor 4-2 is arranged to concentric circles or cross shape, and extracting and separating pond water distributor 4-2 has horizontal radiation water outlet, further, described extracting and separating pond aeration plate 4-6 is the pore type aeration plate being evenly provided with micropore.
Described material filling type anoxic anaerobic reation pool 5 comprises the double oxygen section 5-2, anoxic section 5-3 and the anaerobism section 5-4 that are separated into by dividing plate 5-1, described double oxygen section 5-2 head end is provided with the material filling type anoxic anaerobic reation pool water inlet pipe 5-5 for feeding waste water, oxygen section 5-2 end of holding concurrently is communicated with anoxic section 5-3 head end, anoxic section 5-3 end is communicated with anaerobism section 5-4 head end, the bottom of described anoxic section 5-3 and anaerobism section 5-4 water inlet side dividing plate is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section 5-4 end is provided with material filling type anoxic anaerobic reation pool triphase separator 5-6 and material filling type anoxic anaerobic reation pool overfalling weir 5-7, material filling type anoxic anaerobic reation pool overfalling weir 5-7 bonding pad formula anoxic anaerobic reation pool rising pipe; Described double oxygen section 5-2, anoxic section 5-3 and the tapered structure of anaerobism section 5-4 bottom design, pyramidal structure connects mud discharging valve 5-8; The upper cover 5-9 of the double oxygen section of described material filling type anoxic anaerobic reation pool, anoxic section and anaerobism section is designed to conical structure, and conical structure top is provided with methane waste product effuser 5-10; Material filling type anoxic anaerobic reation pool filler 5-11 is all provided with in described double oxygen section, anoxic section and anaerobism section.
The middle and upper part of described reflux formula BAF 6 is cylindrical, bottom is conical structure, comprises lower current area 6-1, ascending zone 6-2 and mud district 6-3; Described lower current area 6-1 is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with reflux formula BAF water inlet pipe 6-4 and reflux formula BAF water distributor 6-5, lower current area filler 6-6 is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube 6-7, the bottom of described lower current area is provided with traverse baffle 6-8, and the longitudinal section of described traverse baffle 6-8 is horn-like; Described ascending zone 6-2 is positioned at the periphery of lower current area 6-1, the top of traverse baffle, and be provided with ascending zone filler 6-9 in the middle part of ascending zone, bottom is provided with ascending zone aeration tube, and the exit on ascending zone top is provided with reflux formula BAF overfalling weir 6-10; Described mud district 6-3 is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with sediment discharge valve 6-11.
Adopt above-mentioned Refinery Basic Sewage treatment unit to carry out a method for wastewater treatment, there are following steps:
1. waste water enters equalizing tank by equalizing tank water inlet pipe, regulating water quality and the water yield.
2. the water after regulating enters pickling mixing pit 1 by the pickling mixing pit water inlet pipe 1-1 bottom pickling mixing pit, mixes, utilize pickling mixing pit whipping appts 1-3 to be uniformly mixed with the acid solution of adding metering system 1-2 from acid solution; Regulate the pH value of waste water to neutral, the waste water after hybrid reaction enters pickling separate tank water inlet pipe by pickling mixing pit rising pipe 1-4.
3. then waste water enters pickling separate tank 2 by pickling separate tank water inlet pipe 2-1; The pickling separate tank aeration plate 2-6 be positioned at below pickling separate tank water distributor produces a large amount of tiny bubble, the tiny bubble that pickling separate tank aeration plate produces and phenol, oil, dross adherence form mixture and rise under buoyancy, under the effect of pickling separate tank triphase separator 2-8, mixture rises to carbolic oil district 2-5, under the effect of scraper plate 2-10, phenol, oil and scum silica frost enter carbolic oil groove 2-11 and cleaned outward transport; Water after separating treatment enters pickling separate tank catchment area 2-4 under the effect of pickling separate tank flow deflector, enters extraction mixing pit water inlet pipe by pickling separate tank overfalling weir 2-9, pickling separate tank rising pipe.
4. waste water enters extraction mixing pit 3 by the extraction mixing pit water inlet pipe 3-1 bottom extraction mixing pit, mixes with the extraction agent adding metering system 3-2 from extraction agent, utilizes extraction mixing pit whipping appts 3-3 to be uniformly mixed; Waste water after hybrid reaction enters extracting and separating pond water inlet pipe by extraction mixing pit rising pipe 3-4.
5. then waste water enters extracting and separating pond 4 by extracting and separating pond water inlet pipe 4-1; The extracting and separating pond aeration plate 4-6 be positioned at below the water distributor of extracting and separating pond produces a large amount of tiny bubble, on the one hand waste water is uniformly mixed, aldehydes matter is transferred in extraction agent from waste water, on the other hand the tiny bubble that produces of extracting and separating pond aeration plate and extraction agent adhere to and form mixture and rise under buoyancy, under the effect of extracting and separating pond triphase separator 4-8, mixture rises to extraction liquid zone 4-5, flows into extraction liquid bath 4-10; Water after separating treatment enters extracting and separating pond catchment area 4-4 under the flow deflector effect of extracting and separating pond, enters material filling type anoxic anaerobic reation pool water inlet pipe by extracting and separating pond overfalling weir 4-9, extracting and separating pond rising pipe.
6. waste water enters the bottom of material filling type anoxic anaerobic reation pool 5 by material filling type anoxic anaerobic reation pool water inlet pipe 5-5; Waste water advances up and down along dividing plate 5-1 after entering material filling type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section 5-2, anoxic section 5-3 and anaerobism section 5-4, mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the settlement action of the barrier effect of dividing plate 5-1 and mud self makes again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water.Hydrolysis of organic matter in waste water is organic acid by the double amphimicrobe of oxygen section 5-2, the heterotrophic bacterium of anoxic section 5-3 and anaerobism section 5-4, and make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter.The separation of mud, water, methane gas is realized under the material filling type anoxic anaerobic reation pool triphase separator 5-6 effect that waste water after anaerobic reaction is provided with at anaerobism section 5-4 end, mud sinks to the bottom of material filling type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve 5-8 of bottom; The methane waste product that material filling type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser 5-10; Waste water enters reflux formula BAF water inlet pipe by material filling type anoxic anaerobic reation pool overfalling weir 5-7, material filling type anoxic anaerobic reation pool rising pipe.
7. waste water is by reflux formula BAF water inlet pipe 6-4, reflux formula BAF water distributor 6-5 enters the lower current area 6-1 of reflux formula BAF, the air that lower current area aeration tube 6-7 produces and waste water cross generation biochemical reaction in lower current area filler 6-6, lower current area filler filters waste water simultaneously, waste water is by entering ascending zone 6-2 after traverse baffle 6-8, biochemical reaction is there is in ascending zone filler 6-9, ascending zone filler 6-9 filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district 6-3, emitted by the sediment discharge valve 6-11 bottom mud district, water after the process of reflux formula BAF is flowed out by reflux formula BAF overfalling weir 6-10, qualified discharge.
8. material filling type anoxic anaerobic reation pool, reflux formula BAF are discharged mud, throw out are transported outward after concentrated, dehydration.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the scope not departing from this invention technological thought.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (2)
1. a Refinery Basic Sewage treatment unit, is characterized in that: comprise equalizing tank, pickling mixing pit (1), pickling separate tank (2), extraction mixing pit (3), extracting and separating pond (4), material filling type anoxic anaerobic reation pool (5) and reflux formula BAF (6); Equalizing tank, pickling mixing pit (1), pickling separate tank (2), extraction mixing pit (3), extracting and separating pond (4), material filling type anoxic anaerobic reation pool (5) are communicated with successively with reflux formula BAF (6);
Described equalizing tank comprises equalizing tank water inlet pipe and equalizing tank rising pipe, for regulating water quality and the water yield of waste water;
Described pickling mixing pit (1) bottom is provided with pickling mixing pit water inlet pipe (1-1), middle and upper part is provided with acid solution and adds metering system (1-2), is provided with pickling mixing pit whipping appts (1-3) in the middle part of pickling mixing pit; Pickling mixing pit middle and upper part is provided with pickling mixing pit rising pipe (1-4);
Described pickling separate tank (2) comprises pickling separate tank water inlet pipe (2-1) and the pickling separate tank rising pipe for discharging the rear water of process, and described pickling separate tank is followed successively by pickling separate tank mixing zone (2-3) and pickling separate tank disengaging zone from bottom to up, described pickling separate tank disengaging zone comprises pickling separate tank catchment area (2-4) and is positioned at the carbolic oil district (2-5) of pickling separate tank catchment area, the bottom of described pickling separate tank mixing zone is provided with pickling separate tank aeration plate (2-6), the top of described pickling separate tank aeration plate (2-6) is provided with pickling separate tank water distributor (2-2), described pickling separate tank water distributor (2-2) connects pickling separate tank water inlet pipe (2-1), and described pickling separate tank aeration plate (2-6) is connected with the pickling separate tank gas blower (2-7) outside pickling separate tank by pickling separate tank aeration tube, pickling separate tank triphase separator (2-8) is provided with in described pickling separate tank disengaging zone, described pickling separate tank triphase separator (2-8) comprise pickling separate tank flow deflector and be positioned at below pickling separate tank flow deflector with pickling separate tank flow deflector with the use of pickling separate tank triangle guide ring, described pickling separate tank triangle guide ring is arranged on the inwall of pickling separate tank, the top of described pickling separate tank flow deflector is identical with the shape of pickling separate tank disengaging zone, the bottom of described pickling separate tank flow deflector is horn-like, the internal diameter of the bottom of described pickling separate tank flow deflector is greater than the internal diameter of pickling separate tank triangle guide ring, the top of described pickling separate tank disengaging zone outer wall is provided with pickling separate tank overfalling weir (2-9), and described pickling separate tank overfalling weir (2-9) is connected with pickling separate tank rising pipe, described carbolic oil district (2-5) is laid with scraper plate (2-10) and carbolic oil groove (2-11), when waste water overflows from the bottom up, water enters the bottom of pickling separate tank flow deflector together with carbolic oil by pickling separate tank triangle guide ring, carbolic oil continues up to enter carbolic oil district (2-5), and water enters pickling separate tank catchment area (2-4) by the gap between pickling separate tank flow deflector and pickling separate tank triangle guide ring, in order to the better effects if of wastewater treatment, described pickling separate tank water distributor is arranged to concentric circles or cross shape, and pickling separate tank water distributor (2-2) has horizontal radiation water outlet, further, described pickling separate tank aeration plate (2-6) is the pore type aeration plate being evenly provided with micropore,
Described extraction mixing pit (3) bottom is provided with extraction mixing pit water inlet pipe (3-1), middle and upper part is provided with extraction agent and adds metering system (3-2), in the middle part of extraction mixing pit, be provided with extraction mixing pit whipping appts (3-3); Extraction mixing pit middle and upper part is provided with extraction mixing pit rising pipe (3-4);
Described extracting and separating pond (4) comprises extracting and separating pond water inlet pipe (4-1) and the extracting and separating pond rising pipe for discharging the rear water of process, and described extracting and separating pond is followed successively by mixing zone, extracting and separating pond (4-3) and disengaging zone, extracting and separating pond from bottom to up, described disengaging zone, extracting and separating pond comprises catchment area, extracting and separating pond (4-4) and is positioned at the extraction liquid zone (4-5) of catchment area, extracting and separating pond, the bottom of mixing zone, extracting and separating pond is provided with extracting and separating pond aeration plate (4-6), the top of extracting and separating pond aeration plate is provided with extracting and separating pond water distributor (4-2), extracting and separating pond water distributor connects extracting and separating pond water inlet pipe (4-1), and described extracting and separating pond aeration plate (4-6) is connected with extracting and separating pond gas blower (4-7) outside extracting and separating pond by aeration tube, extracting and separating pond triphase separator (4-8) is provided with in disengaging zone, extracting and separating pond, described extracting and separating pond triphase separator (4-8) comprise extracting and separating pond flow deflector and be positioned at below the flow deflector of extracting and separating pond with extracting and separating pond flow deflector with the use of extracting and separating pond triangle guide ring, described extracting and separating pond triangle guide ring is arranged on the inwall in extracting and separating pond, the top of described extracting and separating pond flow deflector is identical with the shape of disengaging zone, the bottom of described extracting and separating pond flow deflector is horn-like, the internal diameter of the bottom of described extracting and separating pond flow deflector is greater than the internal diameter of extracting and separating pond triangle guide ring, the top of disengaging zone, extracting and separating pond outer wall is provided with extracting and separating pond overfalling weir (4-9), and described extracting and separating pond overfalling weir (4-9) is connected with extracting and separating pond rising pipe, described extraction liquid zone is laid with extraction liquid bath (4-10), when waste water overflows from the bottom up, water enters the bottom of extracting and separating pond flow deflector together with extraction liquid by extracting and separating pond triangle guide ring, extraction liquid continues up to enter extraction liquid zone (4-5), and water enters catchment area, extracting and separating pond (4-4) by the gap between extracting and separating pond flow deflector and extracting and separating pond triangle guide ring, in order to the better effects if of wastewater treatment, concentric circles or cross shape are arranged in described extracting and separating pond water distributor (4-2), and extracting and separating pond water distributor (4-2) has horizontal radiation water outlet, further, described extracting and separating pond aeration plate (4-6) is the pore type aeration plate being evenly provided with micropore,
Described material filling type anoxic anaerobic reation pool (5) comprise be separated into by dividing plate (5-1) double oxygen section (5-2), anoxic section (5-3) and anaerobism section (5-4), described double oxygen section (5-2) head end is provided with material filling type anoxic anaerobic reation pool water inlet pipe (5-5) for feeding waste water, oxygen section (5-2) end of holding concurrently is communicated with anoxic section (5-3) head end, and anoxic section (5-3) end is communicated with anaerobism section (5-4) head end; The bottom of the water inlet side dividing plate of described anoxic section (5-3) and anaerobism section (5-4) is provided with the corner of 45 degree, the shock action produced when entering to avoid current, thus the effect playing buffering current and water distribution uniformity; Anaerobism section (5-4) end is provided with material filling type anoxic anaerobic reation pool triphase separator (5-6) and material filling type anoxic anaerobic reation pool overfalling weir (5-7), material filling type anoxic anaerobic reation pool overfalling weir (5-7) bonding pad formula anoxic anaerobic reation pool rising pipe; Described double oxygen section (5-2), anoxic section (5-3) and the tapered structure of anaerobism section (5-4) bottom design, pyramidal structure connects mud discharging valve (5-8); The upper cover (5-9) of the double oxygen section of described material filling type anoxic anaerobic reation pool, anoxic section and anaerobism section is designed to conical structure, and conical structure top is all provided with methane waste product effuser (5-10); Material filling type anoxic anaerobic reation pool filler (5-11) is all provided with in described double oxygen section, anoxic section and anaerobism section;
The middle and upper part of described reflux formula BAF (6) is cylindrical, bottom is conical structure, comprises lower current area (6-1), ascending zone (6-2) and mud district (6-3); Described lower current area (6-1) is positioned at the middle part of the cylindrical structural of reflux formula BAF, for cylindrical structural, lower current area top is provided with reflux formula BAF water inlet pipe (6-4) and reflux formula BAF water distributor (6-5), lower current area filler (6-6) is provided with in the middle part of lower current area, lower current area bottom is provided with lower current area aeration tube (6-7), the bottom of described lower current area is provided with traverse baffle (6-8), and the longitudinal section of described traverse baffle (6-8) is horn-like; Described ascending zone (6-2) is positioned at the periphery of lower current area (6-1), the top of traverse baffle, ascending zone filler (6-9) is provided with in the middle part of ascending zone, bottom is provided with ascending zone aeration tube, and the exit on ascending zone top is provided with reflux formula BAF overfalling weir (6-10); Described mud district (6-3) is positioned at the bottom of the bottom of reflux formula BAF, lower current area and ascending zone, and the bottom in mud district is provided with sediment discharge valve (6-11).
2. adopt Refinery Basic Sewage treatment unit as claimed in claim 1 to carry out a method for wastewater treatment, it is characterized in that: implement according to the following steps;
1. waste water enters equalizing tank by equalizing tank water inlet pipe, regulating water quality and the water yield;
2. the water after regulating enters pickling mixing pit (1) by the pickling mixing pit water inlet pipe (1-1) bottom pickling mixing pit, mix with the acid solution of adding metering system (1-2) from acid solution, utilize pickling mixing pit whipping appts (1-3) to be uniformly mixed; Regulate the pH value of waste water to neutral, the waste water after hybrid reaction enters pickling separate tank water inlet pipe by pickling mixing pit rising pipe (1-4);
3. then waste water enters pickling separate tank (2) by pickling separate tank water inlet pipe (2-1); The pickling separate tank aeration plate (2-6) be positioned at below pickling separate tank water distributor produces a large amount of tiny bubble, the tiny bubble that pickling separate tank aeration plate produces and phenol, oil, dross adherence form mixture and rise under buoyancy, under the effect of pickling separate tank triphase separator (2-8), mixture rises to carbolic oil district (2-5), under the effect of scraper plate (2-10), phenol, oil and scum silica frost enter carbolic oil groove (2-11) and cleaned outward transport; Water after separating treatment enters pickling separate tank catchment area (2-4) under the effect of pickling separate tank flow deflector, enters extraction mixing pit water inlet pipe by pickling separate tank overfalling weir (2-9), pickling separate tank rising pipe;
4. waste water enters extraction mixing pit (3) by the extraction mixing pit water inlet pipe (3-1) bottom extraction mixing pit, mix with the extraction agent adding metering system (3-2) from extraction agent, utilize extraction mixing pit whipping appts (3-3) to be uniformly mixed; Waste water after hybrid reaction enters extracting and separating pond water inlet pipe by extraction mixing pit rising pipe (3-4);
5. then waste water enters extracting and separating pond (4) by extracting and separating pond water inlet pipe (4-1); Extracting and separating pond aeration plate (4-6) be positioned at below the water distributor of extracting and separating pond produces a large amount of tiny bubble, on the one hand waste water is uniformly mixed, aldehydes matter is transferred in extraction agent from waste water, on the other hand the tiny bubble that produces of extracting and separating pond aeration plate and extraction agent adhere to and form mixture and rise under buoyancy, under the effect in extracting and separating pond triphase separator (4-8), mixture rises to extraction liquid zone (4-5), flows into extraction liquid bath (4-10); Water after separating treatment enters catchment area, extracting and separating pond (4-4) under the flow deflector effect of extracting and separating pond, enters material filling type anoxic anaerobic reation pool water inlet pipe by extracting and separating pond overfalling weir (4-9), extracting and separating pond rising pipe;
6. waste water enters the bottom of material filling type anoxic anaerobic reation pool (5) by material filling type anoxic anaerobic reation pool water inlet pipe (5-5); Advance up and down along dividing plate (5-1) after waste water enters material filling type anoxic anaerobic reation pool, successively by the Sludge Bed of each reaction chamber of hold concurrently oxygen section (5-2), anoxic section (5-3) and anaerobism section (5-4), mud in reaction tank moves along with the upper current downflow of waste water and the effect of biogas rising, the barrier effect of dividing plate (5-1) and the settlement action of mud self make again the flow velocity of mud reduce, therefore a large amount of mud is all trapped within reaction tank, and the microorganism in reaction tank fully contacts with the organism in waste water; Hydrolysis of organic matter in waste water is organic acid by the heterotrophic bacterium of the amphimicrobe of oxygen section (5-2), anoxic section (5-3) and the anaerobism section (5-4) held concurrently, make larger molecular organics be decomposed into small organic molecule, insoluble organism changes into dissolved organic matter; The separation of mud, water, methane gas is realized under the effect of material filling type anoxic anaerobic reation pool triphase separator (5-6) that the waste water after anaerobic reaction is provided with at anaerobism section (5-4) end, mud sinks to the bottom of material filling type anoxic anaerobic reation pool under gravity, and unnecessary mud is discharged by the mud discharging valve (5-8) of bottom; The methane waste product that material filling type anoxic anaerobic reation pool produces collects discharge by reaction tank top effuser (5-10); Waste water enters reflux formula BAF water inlet pipe by material filling type anoxic anaerobic reation pool overfalling weir (5-7), material filling type anoxic anaerobic reation pool rising pipe;
7. waste water is by reflux formula BAF water inlet pipe (6-4), reflux formula BAF water distributor (6-5) enters the lower current area (6-1) of reflux formula BAF, the air that lower current area aeration tube (6-7) produces and waste water cross generation biochemical reaction in lower current area filler (6-6), lower current area filler filters waste water simultaneously, waste water enters ascending zone (6-2) by after traverse baffle (6-8), biochemical reaction is there is in ascending zone filler, ascending zone filler (6-9) filters waste water simultaneously, the mud that lower current area and ascending zone produce sinks to mud district (6-3), emitted by the sediment discharge valve (6-11) bottom mud district, water after the process of reflux formula BAF is flowed out by reflux formula BAF overfalling weir (6-10), qualified discharge,
8. material filling type anoxic anaerobic reation pool (5), reflux formula BAF (6) discharge throw out, mud outward transport after concentrated, dehydration.
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