CN107698099A - A kind of road tank car cleaning station composite wastewater recycling processing system - Google Patents

A kind of road tank car cleaning station composite wastewater recycling processing system Download PDF

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Publication number
CN107698099A
CN107698099A CN201710947187.XA CN201710947187A CN107698099A CN 107698099 A CN107698099 A CN 107698099A CN 201710947187 A CN201710947187 A CN 201710947187A CN 107698099 A CN107698099 A CN 107698099A
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anaerobic
tank
reaction
water
cleaning station
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张冬梅
滕青
董家维
黄柱良
蔡浩龙
曾婉汶
贺仕磊
杨戈文
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Guangdong University of Petrochemical Technology
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Guangdong University of Petrochemical Technology
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/44—Nature of the water, waste water, sewage or sludge to be treated from vehicle washing facilities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/026—Fenton's reagent
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The present invention relates to a kind of road tank car cleaning station composite wastewater recycling processing system, it includes：Anaerobic reation pool, oil interceptor, coagulating basin, aerobic reaction tank, sedimentation basin, Fenton reaction tanks, reuse tank, cleaning device, Domestic sewage collecting pond, septic tank and biogas air bag, the anaerobic reation pool are made up of the interlayer outside anaerobic reaction bucket and anaerobic reaction bucket.The invention also discloses a kind of method that road tank car cleaning station wastewater reusing treatment is carried out using said apparatus.Apparatus and method of the present invention can be jointly processed by waste water, sanitary sewage and septic tank wastewater is cleaned caused by road tank car cleaning station, efficiently solve the fuel problem needed for cleaning station heating boiler, and the waste heat of rinse water is taken full advantage of, realizes cycling utilization of wastewater target and " zero-emission " target.

Description

A kind of road tank car cleaning station composite wastewater recycling processing system
Technical field
The present invention relates to a kind of road tank car cleaning station composite wastewater recycling processing system, belong to Industrial Wastewater Treatment skill Art field, realize road tank car cleaning station cycling utilization of wastewater and " zero-emission " target.
Background technology
Road tank car is to contain the important tool with transporting oil, extensively should be had in the major petrochemical refining base in China With because the fast development road tank car quantity and capacity of highway construction are also increasing and expanded year by year.One large-scale petrochemical Base averagely possesses tank car quantity for more than 6000, and cleaning 10 times every year of average each car, each 50 tons of water consumption, whole year will disappear Consume 3,000,000 tons of water.About 3 yuan/ton of industrial water, is recycled after processing, and conserve water 9,000,000 yuan/year, is had very big Economic benefit.Secondly, the raising recently as whole society's environmental consciousness and the upgrading to environmental protection standard requirement, items pollution are controlled Reason measure dynamics is increasing, and the pollution problem of oil truck causes the extensive concern of environmental worker.Oil truck the material that changes the outfit, Produced first in periodic cleaning and maintenance process substantial amounts of sewage, particularly tank car fill oil types difference cause sewage into Point complexity, sewage oil content often more than 500mg/L, while may containing the toxicity such as sulfide, benzene, volatile phenol and lead tetraethide compared with Big pollutant, cause the serious pollution of surrounding enviroment.
Processing for oily waste water, frequently with " oil removal-coagulation/air supporting-biochemistry " old three sets of handling process.But due to oil Tank car with water is high-temperature water or high-temperature steam when cleaning, and leaving water temperature is still very high after cleaning, and 55 DEG C of average out to, rinse water is too high Temperature be unfavorable for biochemical treatment.Secondly, after HIGH TEMPERATURE PURGE water is directly discharged into oil interceptor, oil removal effect is reduced, deepens the breast of oil Change degree, so as to increase subsequent biochemical processing organic loading.So generally oil truck cleaning station can be set before oil interceptor it is slow Pond is rushed, to reduce temperature, but this can cause substantial amounts of waste heat to be wasted, unfavorable in saving, while can also produce atmosphere pollution.Cause This, oil truck rinse water water quality has particularity so that conventional coagulation and biochemical process treatment effeciency is low, it is difficult to meets that it reaches Mark the requirement of discharge.Again, it is big to clean tank car water requirement, according to current environmentally friendly development situation, it is laggard that water process is cleaned to tank car Row reuse is the developing direction of this wastewater processing technology, for all kinds of sewage caused by oil truck cleaning station and with water feature, this Invention carries out particular design to anaerobic device and processing system, effectively utilizes oil truck rinse water waste heat, greatly reduces waste water Middle oily emulsification degree, oil removal efficiency about more than 15% is improved, and thus significantly reduce subsequent biochemical load, raising processing Effect, anaerobic reactor biogas output and quality are improved in particular with septic tank wastewater, supplies boiler energy, farthest Reduce oil truck cleaning station energy consumption, material consumption, save operating cost more than 30%, after processing water outlet reach railway quality of reused water mark It is accurate（TB 3007-2000）, finally realize the target of oil truck cleaning station recycling economy and " zero-emission ".
The content of the invention
The present invention is directed to oil truck cleaning station water and rinse water feature, there is provided a kind of road tank car cleaning station synthesis is dirty Water circulation processing system, it can enable the waste heat of rinse water utilize, and effectively improve oil removal effect and Biochemical Treatment, and Anaerobic reactor biogas output and quality are improved using septic tank wastewater, all kinds of sewage are integrated with processing and forms closed cycle, section About floor space, operating cost more than 30% is reduced, finally realize the target of recycling economy and " zero-emission ".
To achieve the above object, the present invention provides following technical scheme：A kind of road tank car cleaning station composite wastewater returns With processing system, it includes：Anaerobic reation pool, oil interceptor, coagulating basin, aerobic reaction tank, sedimentation basin, Fenton reaction tanks, return With tank, cleaning device, Domestic sewage collecting pond, septic tank and biogas air bag, the anaerobic reation pool by anaerobic reaction bucket and Interlayer outside anaerobic reaction bucket forms, and the cleaning water outs after the flushing oil truck of the cleaning device connect the folder through suction pump The cleaning water inlet of layer bottom, the cleaning water outs on the interlayer top connect through the first draining pump intakes in the middle part of the oil interceptor Mouthful, oil interceptor middle and lower part delivery port connects water inlet in the middle part of the coagulating basin through the second draining pump, and the coagulating basin top goes out The draining pump of the mouth of a river the 3rd connects the anaerobic reaction bottom of the barrel water inlet, and Domestic sewage collecting pond delivery port is through the 9th draining Pump connects anaerobic reaction bottom of the barrel water inlet, and the septic tank effluent mouth connects the anaerobic reaction bottom of the barrel through the first sludge pump and fed Mouthful, the methane outlet of the anaerobic reaction bucket connects the biogas import of the biogas air bag, the anaerobic reaction through the second control valve Bucket top delivery port connects the aerobic reaction tank water inlet through the 4th draining pump, and the aerobic reaction tank delivery port is through the 5th draining Pump connects the sedimentation basin water inlet, and the sedimentation basin delivery port meets the Fenton reaction tanks water inlet, institute through the 6th draining pump State Fenton reaction tanks delivery port and connect the reuse tank water inlet through the 7th draining pump.
As the further scheme of the present invention, the bottom plate of the interlayer on the anaerobic reation pool tilts 20 ° to side.
As the further scheme of the present invention, the anaerobic reation pool is supported by support frame, bottom plate upper surface low side Mud discharging mouth connect the anaerobic reaction bottom of the barrel charging aperture through the second sludge pump.
Chemical feed pipe is provided with as the further scheme of the present invention, in the coagulating basin, the first pH value detector and first stirs Mix device；Set in the Fenton reaction tanks and add H2O2Pipe plus Fe2+Pipe, first adjust pH value pipe, the second pH value detector and second Agitator；The reuse tank adjusts pH value pipe, the 3rd pH value detector and the 3rd agitator equipped with second.
As the further scheme of the present invention, the anaerobic reaction bucket is to be thoroughly mixed formula anaerobic reactor（CSTR）, detest Oxygen filter tank（AF）, Anaerobic Sequencing Bath Reactor（ASBR）, anaerobic baffle reactor（ABR）, up-flow anaerobic sludge blanket（UASB）、 It is anaerobic expanded granular sludge bed（EGSB）Or interior circulation（IC）Reactor；The oil interceptor is parallel flow intercepter, inclined plate grease Pond；The aerobic reaction tank is aerobic activated sludge process reactor；The sedimentation basin is rectangular sedimentation tank, radical sedimentation basin Or inclined-plate clarifying basin.
In addition, the present invention also provides a kind of road tank car cleaning station composite wastewater process for reclaiming, using above-mentioned A kind of road tank car cleaning station composite wastewater recycling processing system, this method comprise the following steps：
1）Rinse water is directly squeezed into the interlayer of anaerobic reation pool by suction pump, passes through the first draining after stopping 8-12 hours Rinse water in interlayer is discharged into oil interceptor by pump；
2）The rinse water after oil interceptor back warp oil removal is discharged into coagulating basin by the second draining pump, and adds coagulant, is stirred 0.5-1h is stood after 20 minutes；
3）Rinse water after coagulating basin back warp coagulation is discharged into by anaerobic reaction bucket by the 3rd draining pump；Pass through the 9th draining pump 43 Sanitary sewage caused by road tank car cleaning station that Domestic sewage collecting pond 44 is collected is discharged into anaerobic reaction bucket；Pass through first Septic tank wastewater caused by road tank car cleaning station that septic tank 41 is collected is discharged into anaerobic reaction bucket by sludge pump 42；
4）The second control valve is opened, biogas caused by anaerobic reaction bucket anaerobic fermentation is collected by biogas air bag；
5）Water outlet after anaerobic reaction bucket back warp anaerobic reaction is discharged into by aerobic reaction tank by the 4th draining pump；
6）Water outlet after aerobic reaction tank back warp aerobic reaction is discharged into by sedimentation basin 22 by the 5th draining pump；
7）Water outlet in sedimentation basin after precipitation is discharged into by Fenton reaction tanks by the 6th draining pump, then adds 30% H2O2、FeSO4•7H2O, wherein Fe2+: H2O2Mass ratio be 1:20-1:25, FeSO4•7H2O dosages are 0.5g/L；Use 5M Sulfuric acid adjust pH value 3.0-4.0, stand 1.5h after stirring reaction 0.5h；
8）Recycle-water is regard the reacted water outlets of Fenton reaction tank back warp Fenton as by the 7th draining pump and is discharged into recycle-water Groove；Saturation NaOH solution regulation recycle-water pH value 6.5-7.0 is added, stirring and evenly mixing can be standby.
As the further scheme of the present invention, coagulant is commercial sulphuric acid aluminium, polyaluminium sulfate, aluminium polychloride, chlorine Change any one in iron, dosage 0.5g/L, saturated solution is first configured to before adding.
As the further scheme of the present invention, the sludge concentration in anaerobic reaction bucket is maintained at more than 6000mg/L, sludge With the volume ratio with the rinse water after coagulating treatment 1:1-1:Between 4, hydraulic detention time was at 2-5 days.
As the further scheme of the present invention, the sludge concentration of aerobic reaction tank is maintained at 3200-5000mg/L, is aerated rank Section dissolved oxygen control is in 2.5-3.5mg/L, aeration time 6h.
Compared with prior art, the beneficial effects of the invention are as follows：At a kind of road tank car cleaning station composite wastewater reuse System and method are managed, are had the following advantages that：
One：Road tank car rinse water has the characteristics of temperature is high, and the present invention is existing to the particular design of anaerobic reactor part Effect has reclaimed the after-heat of oil truck rinse water, is advantageous to maintain anaerobic reactor temperature stabilization, particularly winter low temperature again In the case of keep anaerobism temperature more than 10-15 ° to keeping the methane production of anaerobic reactor stably to have very important meaning.Its It is secondary, the utilization of oil truck rinse water waste heat, emulsification degree oily in waste water is substantially reduced, improve follow-up oil removal effect and biochemistry Effect, reduce Fenton dosings.Simultaneously as UTILIZATION OF VESIDUAL HEAT IN eliminates the process that rinse water aqua storage tank is set before oil interceptor, With the small advantage low with construction cost of construction area, integrated operation cost reduces about more than 30%.
Two：The mode that sanitary sewage, septic tank wastewater and rinse water caused by road tank car cleaning station are jointly processed by, Chemical toxicity in rinse water is reduced, increases the anaerobic digestion effect to organic macromolecule pollutant in water, particularly increases Fermentation methane phase ability.Methane concentration is about 60% in usual biomass anaerobic aerogenesis, in the present invention by introduce sanitary sewage and Septic tank wastewater mode, makes methane concentration reach more than 70%, efficiently solves the problems, such as cleaning station boiler oil, realizes " three wastes " Recycling treatment, therefore realize the theory of recycling industries and clean production.
Three：Highway in China oil truck cleaning station does not carry out the technology and process equipment of Treatment for Reuse also to sewage at present, All kinds of waste water caused by cleaning station more integrate to the method and technique of processing, existing sewage disposal is using " oil removal-mixed The old three sets of handling process of solidifying/air supporting-biochemistry ".The present invention develops new technological process and equipment on this basis, after making processing Water outlet reaches railway quality of reused water standard（TB 3007-2000）, COD ＜ 50mg/L, oily ＜ 1mg/L, ammonia nitrogen ＜ 5mg/L, Turbidity ＜ 3NUT, colorless and odorless, and realize waste water zero emission target.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the anaerobic reation pool of the present invention.
In figure, 1- suction pumps, 2- anaerobic reation pools, 3- interlayers, 4- anaerobic reaction buckets, 5- mud discharging mouths, 6- support frames, 7- Bottom plate, 8- biogas air bags, the sludge pumps of 9- second, the draining pumps of 10- first, 11- oil interceptors, the draining pumps of 12- second, 13- coagulations Pond, 14- chemical feed pipes, 15- the first pH value detectors, the agitators of 16- first, the draining pumps of 17- the 3rd, the control valves of 18- second, 19- 4th draining pump, 20- aerobic reaction tanks, the draining pumps of 21- the 5th, 22- sedimentation basins, the draining pumps of 23- the 6th, 24- Fenton reactions Pond, 25- add H2O2Pipe, 26- add Fe2+Pipe, 27- first adjust pH value pipe, 28- the second pH value detectors, the agitators of 29- second, 30- 7th draining pump, 31- reuse tanks, 32- second adjust pH value pipe, the pH value detectors of 33- the 3rd, the agitators of 34- the 3rd, 35- the Eight draining pumps, 36- heating boilers, the control valves of 37- the 4th, the control valves of 38- the 3rd, the control valves of 39- first, 40- cleaning devices, 41- septic tanks, the sludge pumps of 42- first, the draining pumps of 43- the 9th, 44- Domestic sewage collectings pond.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1-2, in the embodiment of the present invention, a kind of road tank car cleaning station composite wastewater recycling processing system, It includes：Anaerobic reation pool 2, oil interceptor 11, coagulating basin 13, aerobic reaction tank 20, sedimentation basin 22, Fenton reaction tanks 24, return With tank 31, cleaning device 40, Domestic sewage collecting pond 44, septic tank 41 and biogas air bag 8, the number of the anaerobic reation pool 2 Amount can configure according to daily cleaning tank car quantity and average aquifer yield, and to ensure the sufficient anaerobism time, anaerobic reation pool 2 always holds Product is bigger than the volume of aerobic reaction tank 20 3 times, and anaerobic reation pool 2 is circle, is divided into inside and outside two layers, the anaerobic reation pool 2 is by detesting Interlayer 3 outside oxygen reaction container 4 and anaerobic reaction bucket forms, the cleaning water outs warp rinsed after oil truck of the cleaning device 40 Suction pump 1 connects the cleaning water inlet of the bottom of interlayer 3, and the cleaning water outs on the top of interlayer 3 connect through the first draining pump 10 The middle part water inlet of oil interceptor 11, the middle and lower part delivery port of oil interceptor 11 are connect in the coagulating basin 13 through the second draining pump 12 Portion's water inlet, the top delivery port of coagulating basin 13 connects the bottom water inlet of anaerobic reaction bucket 4 through the 3rd draining pump 17, described The delivery port of Domestic sewage collecting pond 44 connects the bottom water inlet of anaerobic reaction bucket 4, the water outlet of septic tank 41 through the 9th draining pump 43 Mouth connects the bottom feed mouth of anaerobic reaction bucket 4 through the first sludge pump 42, and the methane outlet of the anaerobic reaction bucket 4 is through the second control Valve 18 processed connects the biogas import of the biogas air bag 8, and the top delivery port of anaerobic reaction bucket 4 connects described through the 4th draining pump 19 The water inlet of aerobic reaction tank 20, the delivery port of aerobic reaction tank 20 connect the water inlet of sedimentation basin 22 through the 5th draining pump 21, The delivery port of sedimentation basin 22 connects the water inlet of Fenton reaction tanks 24, the Fenton reaction tanks 24 through the 6th draining pump 23 Delivery port connects the water inlet of reuse tank 31 through the 7th draining pump 30.The quantity that Fenton reaction tanks 24 configure can be as needed Depending on, it is used in parallel, it can temporarily be used as aqua storage tank after completion of the reaction, reduce floor space.
As shown in figure 1, the delivery port of reuse tank 31 connects heating boiler 36, the heating boiler through the 8th draining pump 35 36 hot water outlets connect the hot water inlet of cleaning device 40 through the first control valve 39, and the methane outlet of biogas air bag 8 is through the 3rd Control valve 38, the 4th control valve 37 connect the biogas import of heating boiler 36, and so, fuel needed for heating boiler 36 is anti-by anaerobism Biogas caused by pond 2 is answered to supply.
As shown in figure 1, the bottom plate 7 of the interlayer 3 on the anaerobic reation pool 2 tilts 20 ° to side, so as to by flushing oil tank The collection and discharge of the sediments such as greasy filth are produced during car；The anaerobic reation pool 2 is supported by support frame 6, and support frame 6, which is arranged on, to be detested The bottom margin of oxygen reaction tank 2 is to protect interlayer；The mud discharging mouth 5 of the upper surface low side of bottom plate 7 connects through the second sludge pump 9 described to be detested The bottom feed mouth of oxygen reaction container 4, mud discharging mouth 5 are connected by the second sludge pump 9 with the charging aperture of anaerobic reaction bucket 4, and such greasy filth enters Enter and decomposed in anaerobic reaction bucket 4, greatly reduced as the quantity of solid waste caused by car that cleans the storage.
As shown in figure 1, it is provided with chemical feed pipe 14, the first pH value detector 15 and the first agitator 16 in the coagulating basin 13； Set in the Fenton reaction tanks 24 and add H2O2Pipe 25 plus Fe2+Pipe 26, first adjusts pH value pipe 27, the second pH value detector 28 And second agitator 29；The reuse tank 31 adjusts pH value pipe 32, the 3rd pH value detector 33 and the 3rd agitator equipped with second 34。
The anaerobic reaction bucket 4 is to be thoroughly mixed formula anaerobic reactor, anaerobic filter, Anaerobic Sequencing Bath Reactor, anaerobism Baffle plate reactor, up-flow anaerobic sludge blanket, anaerobic expanded granular sludge bed or inner circulation reactor；The oil interceptor 11 is flat Streaming oil interceptor, sloping plate oil separation tank；The aerobic reaction tank 20 is aerobic activated sludge process reactor；The sedimentation basin 22 is flat Flow settling pond, radical sedimentation basin or inclined-plate clarifying basin.
A kind of above-mentioned road tank car cleaning station composite wastewater recycling processing system, its processing method, this method include Following steps：
1）Rinse water after oil truck is rinsed in cleaning device 40 is directly squeezed into the interlayer 3 of anaerobic reation pool 4 by suction pump 1 In, stop after 8-12 hours and the rinse water in interlayer 3 is discharged into by oil interceptor 11 by the first draining pump 10；
2）The rinse water after the back warp oil removal of oil interceptor 11 is discharged into coagulating basin 13 by the second draining pump 12, and adds coagulation Agent, stirring stand 0.5-1h after 20 minutes；
3）Rinse water after the back warp coagulation of coagulating basin 13 is discharged into by anaerobic reaction bucket 4 by the 3rd draining pump 17；Pass through the 9th row Sanitary sewage caused by road tank car cleaning station that Domestic sewage collecting pond 44 is collected is discharged into anaerobic reaction bucket 4 by water pump 43； Septic tank wastewater caused by road tank car cleaning station that septic tank 41 is collected is discharged into by anaerobic reaction by the first sludge pump 42 Bucket 4；
4）The second control valve 18 is opened, biogas caused by the anaerobic fermentation of anaerobic reaction bucket 4 is collected by biogas air bag 8；
5）Water outlet after the back warp anaerobic reaction of anaerobic reaction bucket 4 is discharged into by aerobic reaction tank 20 by the 4th draining pump 19；
6）Water outlet after the back warp aerobic reaction of aerobic reaction tank 20 is discharged into by sedimentation basin 22 by the 5th draining pump 21；
7）Water outlet in sedimentation basin 22 after precipitation is discharged into by Fenton reaction tanks 24 by the 6th draining pump 23, then added 30% H2O2、FeSO4•7H2O, wherein Fe2+: H2O2Mass ratio be 1:20-1:25, FeSO4•7H2O dosages are 0.5g/L； PH value 3.0-4.0 is adjusted with 5M sulfuric acid, 1.5h is stood after stirring reaction 0.5h；
8）It regard the reacted water outlets of back warp Fenton of Fenton reaction tanks 24 as recycle-water by the 7th draining pump 30 to be discharged into back With tank 31；Saturation NaOH solution regulation recycle-water pH value 6.5-7.0 is added, stirring and evenly mixing can be standby.
Coagulant is any one in commercial sulphuric acid aluminium, polyaluminium sulfate, aluminium polychloride, iron chloride, and dosage is 0.5g/L, saturated solution is first configured to before adding.
Sludge concentration in anaerobic reaction bucket is maintained at more than 6000mg/L, sludge and the rinse water after coagulating treatment Volume ratio is 1:1-1:Between 4, hydraulic detention time was at 2-5 days.
The sludge concentration of aerobic reaction tank is maintained at 3200-5000mg/L, and aeration phase dissolved oxygen is controlled in 2.5- 3.5mg/L, aeration time 6h.
So, sanitary sewage, septic tank wastewater and rinse water caused by road tank car cleaning station are in anaerobic reation pool It is jointly processed by.
Detested in addition, septic tank wastewater caused by road tank car cleaning station squeezes into anaerobic reaction bucket 4 by sludge pump 42 Oxygen processing, batch (-type) feed postition, feeding interval time are determined that generally 5-10 days, the amount of addition made to detest by anaerobic gas generation amount TS remains 10-20% in oxygen reaction container 4, regulates and controls methane production and quality to meet needed for heating boiler 36.
Application examples one：
Using Maoming City oil truck cleaning station as objective for implementation, oil truck rinse water is in yellow or yellow-gray, temperature 58 °, turbidity 611NUT, there is pungent oily taste, 4991.5 mg/L of mg/L, COD of oil-containing 583.12, the mg/ of ammonia nitrogen 24.19 L, the mg/L of ss suspended solid 114, pH value 8.36.Cleaning station sanitary sewage pH value 7.39, the mg/L of COD 181.6, ammonia nitrogen 23.5 Mg/L, ss suspended solid 62mg/L.Septic tank wastewater pH value 7.96, the mg/L of COD 32065.7, ammonia nitrogen 6937.8 mg/L, VS/ TS is 70.4.
Rinse water after flushing oil truck in cleaning device 40 is directly squeezed into the interlayer 3 of anaerobic reation pool 2 by suction pump 1 Bottom, in the application example the use of anaerobic reaction bucket 4 be thoroughly mixed formula anaerobic reactor.Rinse water and anaerobic reaction in interlayer 3 Bucket fully carries out heat exchange, so maintains the temperature of anaerobic reaction bucket 4 more than 22 °, the temperature of maintenance anaerobic reaction bucket 4 during winter More than 10-15 °, oil interceptor 11 is discharged into through the first draining pump by the top discharge outlet of interlayer 3 after 8 hours residence times.This mode Both flushing water heat had been reclaimed, has reduced emulsification degree oily in flushing water again, oil interceptor oil removal rate is improved more than 15%, has Beneficial to subsequent biochemical processing.
The water outlet of oil interceptor 11 is discharged into coagulating basin 13 by middle and lower part delivery port by the second draining pump 12, in the application example Oil interceptor 11 is parallel flow intercepter, 2963 mg/L of mg/L, COD of water outlet oil-containing 483.42 after oil removal.Added in coagulating basin 13 Coagulant be polyaluminium sulfate, dosage 0.5g/L, be first configured to saturated solution before adding, added by chemical feed pipe 14, it is logical Cross the first agitator 16 to be stirred, stirring stops standing 1 hour after 20 minutes.
The top water outlet of coagulating basin 13 enters anaerobic reaction bucket 4 through the 3rd draining pump 17, and the volumetric ratio of anaerobic reaction bucket 4 is aerobic anti- Answer pool volume big 3 times.Sludge concentration is maintained at more than 6000mg/L, and sludge is 1 with the cleaning water volume ratio after coagulating treatment: 2.5。
Sanitary sewage caused by cleaning station and septic tank wastewater are all squeezed into anaerobic reaction bucket 4, keep anaerobic reaction bucket Interior TS 10%.Hydraulic detention time is 3 days, and COD, the clearance of oil are respectively 60%, 45%.Anaerobic gas generation rate is 0.47L/gVS, Methane content 72%, biogas supply heating boiler as the energy.
The water outlet of anaerobic reaction bucket 4 enters aerobic reaction tank 20 through the 4th draining pump 19.Aerobic reaction tank 20 in the application example For aerobic activated sludge process reaction tank, sludge concentration is maintained at 3260mg/L, and the control of aeration phase dissolved oxygen is in 3.5mg/L, exposure After the gas time is 6h, COD, the clearance of oil are respectively 86%, 65%.The water outlet of aerobic reaction tank 20 enters through the 5th draining pump 21 Sedimentation basin 22, sedimentation basin 22 is rectangular sedimentation tank in the application example.The water outlet of sedimentation basin 22 enters through the 6th draining pump 23 After Fenton reaction tanks 24,30% H is separately added into2O2、FeSO4•7H2O, both mol ratios are 1:20, adjust pH with 5M sulfuric acid Value 3.0,1.5h is stood after stirring 1h, the water outlet of Fenton reaction tanks 24 is discharged into reuse tank 31 by the 7th draining pump 30, Saturation NaOH solution is added by the second tune pH value pipe 32, pH value 7.0 is adjusted, stirs and evenly mixs, now water outlet COD 30.2mg/L, oil 0.29 mg/L, the mg/L of ammonia nitrogen 1.71, turbidity ＜ 3NUT, water white transparency.The water outlet of reuse tank 31 enters in heating boiler 36, adds Used after heat as rinse water.
The present invention handles sanitary sewage and septic tank wastewater together with rinse water, and producing methane by anaerobic processes is used as The energy of heating boiler, by taking full advantage of the waste heat of rinse water to the particular design of anaerobic device, before eliminating oil interceptor If the process of rinse water aqua storage tank, rinse water is carried out reuse, farthest reduce oil truck cleaning station energy consumption, thing Consumption, there is the characteristics of saving construction area and reducining the construction costs, while also reduce cleaning cost, therefore realize recycling economy With the theory of clean manufacturing.

Claims (9)

1. a kind of road tank car cleaning station composite wastewater recycling processing system, it is characterised in that it includes：Anaerobic reation pool, Oil interceptor, coagulating basin, aerobic reaction tank, sedimentation basin, Fenton reaction tanks, reuse tank, cleaning device, Domestic sewage collecting Pond, septic tank and biogas air bag, the anaerobic reation pool are made up of the interlayer outside anaerobic reaction bucket and anaerobic reaction bucket, described clear Cleaning water outs after the flushing oil truck of cleaning device connect the cleaning water inlet of the interlayer bottom through suction pump, on the interlayer The cleaning water outs in portion connect water inlet in the middle part of the oil interceptor through the first draining pump, and oil interceptor middle and lower part delivery port is through second Draining pump connects water inlet in the middle part of the coagulating basin, and coagulating basin top delivery port connects the anaerobic reaction bucket through the 3rd draining pump Bottom water inlet, Domestic sewage collecting pond delivery port connect anaerobic reaction bottom of the barrel water inlet, describedization through the 9th draining pump Manure pit delivery port connects the anaerobic reaction bottom of the barrel charging aperture through the first sludge pump, and the methane outlet of the anaerobic reaction bucket is through Two control valves connect the biogas import of the biogas air bag, and it is described good that the anaerobic reaction bucket top delivery port connects through the 4th draining pump Oxygen reaction tank water inlet, the aerobic reaction tank delivery port connect the sedimentation basin water inlet, the sedimentation basin through the 5th draining pump Delivery port connects the Fenton reaction tanks water inlet through the 6th draining pump, and the Fenton reaction tanks delivery port is through the 7th draining pump Connect the reuse tank water inlet.
A kind of 2. road tank car cleaning station composite wastewater recycling processing system according to claim 1, it is characterised in that The bottom plate of interlayer on the anaerobic reation pool tilts 20 ° to side.
A kind of 3. road tank car cleaning station composite wastewater recycling processing system according to claim 2, it is characterised in that The anaerobic reation pool is supported by support frame, and it is anti-that the mud discharging mouth of bottom plate upper surface low side through the second sludge pump connects the anaerobism Answer bottom of the barrel charging aperture.
A kind of 4. road tank car cleaning station composite wastewater recycling processing system according to claim 1, it is characterised in that Chemical feed pipe, the first pH value detector and the first agitator are provided with the coagulating basin；Set in the Fenton reaction tanks and add H2O2 Pipe plus Fe2+Pipe, first adjust pH value pipe, the second pH value detector and the second agitator；The reuse tank adjusts pH value equipped with second Pipe, the 3rd pH value detector and the 3rd agitator.
A kind of 5. road tank car cleaning station composite wastewater recycling processing system according to claim 1, it is characterised in that The anaerobic reaction bucket reacts to be thoroughly mixed formula anaerobic reactor, anaerobic filter, Anaerobic Sequencing Bath Reactor, anaerobism baffle plate Device, up-flow anaerobic sludge blanket, anaerobic expanded granular sludge bed or inner circulation reactor；The oil interceptor is parallel flow intercepter Or sloping plate oil separation tank；The aerobic reaction tank is aerobic activated sludge process reactor；The sedimentation basin is rectangular sedimentation tank, spoke Flow settling pond or inclined-plate clarifying basin.
6. a kind of road tank car cleaning station composite wastewater process for reclaiming, utilizes any public affairs described in claim 1 to 5 Road binders tank car cleaning station composite wastewater recycling processing system, it is characterised in that this method comprises the following steps：
1）Rinse water is directly squeezed into the interlayer of anaerobic reation pool by suction pump, passes through the first draining after stopping 8-12 hours Rinse water in interlayer is discharged into oil interceptor by pump；
2）The rinse water after oil interceptor back warp oil removal is discharged into coagulating basin by the second draining pump, and adds coagulant, is stirred 0.5-1h is stood after 20 minutes；
3）Rinse water after coagulating basin back warp coagulation is discharged into by anaerobic reaction bucket by the 3rd draining pump；Will by the 9th draining pump Sanitary sewage caused by the road tank car cleaning station that Domestic sewage collecting pond is collected is discharged into anaerobic reaction bucket；Pass through the first spoil disposal Septic tank wastewater caused by road tank car cleaning station that septic tank is collected is discharged into anaerobic reaction bucket by pump；
4）The second control valve is opened, biogas caused by anaerobic reaction bucket anaerobic fermentation is collected by biogas air bag；
5）Water outlet after anaerobic reaction bucket back warp anaerobic reaction is discharged into by aerobic reaction tank by the 4th draining pump；
6）Water outlet after aerobic reaction tank back warp aerobic reaction is discharged into by sedimentation basin by the 5th draining pump；
7）Water outlet in sedimentation basin after precipitation is discharged into by Fenton reaction tanks by the 6th draining pump, then adds 30% H2O2、 FeSO4•7H2O, wherein Fe2+: H2O2Mass ratio be 1:20-1:25, FeSO4•7H2O dosages are 0.5g/L；With 5M sulfuric acid To adjust pH value 3.0-4.0,1.5h is stood after stirring reaction 0.5h；
8）Recycle-water is regard the reacted water outlets of Fenton reaction tank back warp Fenton as by the 7th draining pump and is discharged into recycle-water Groove；Saturation NaOH solution regulation recycle-water pH value 6.5-7.0 is added, stirring and evenly mixing can be standby.
A kind of 7. road tank car cleaning station composite wastewater process for reclaiming according to claim 6, it is characterised in that Coagulant is any one in commercial sulphuric acid aluminium, polyaluminium sulfate, aluminium polychloride, iron chloride, dosage 0.5g/L, is added Saturated solution is first configured to before entering.
A kind of 8. road tank car cleaning station composite wastewater process for reclaiming according to claim 6, it is characterised in that Sludge concentration in anaerobic reaction bucket is maintained at more than 6000mg/L, and sludge and the volume ratio of the rinse water after coagulating treatment exist 1:1-1:Between 4, hydraulic detention time was at 2-5 days.
A kind of 9. road tank car cleaning station composite wastewater process for reclaiming according to claim 6, it is characterised in that The sludge concentration of aerobic reaction tank is maintained at 3200-5000mg/L, and the control of aeration phase dissolved oxygen is in 2.5-3.5mg/L, aeration Time is 6h.
CN201710947187.XA 2017-10-12 2017-10-12 A kind of road tank car cleaning station composite wastewater recycling processing system Withdrawn CN107698099A (en)

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