CN207391182U - Produced Water In Oil-gas Fields, Ngi reinjection technology equipment - Google Patents

Abstract

The utility model discloses a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment, recovered water separates fuel-displaced, sediment through three phase separation, again through electric flocculation, electrocatalytic oxidation, physico-chemical precipitation clarifying treatment, it realizes demulsification, de-oiling, go suspended matter, the purpose of disinfection, re-injection after making water up to standard, energy oil recovery, environmental protection, water process operating cost is low, and social and economic significance is great.

Description

Produced Water In Oil-gas Fields, Ngi reinjection technology equipment

Technical field

The utility model is related to a kind of processing Produced Water In Oil-gas Fields, Ngi reinjection technology equipment.

Background technology

During oil gas field (oil field, gas field) extraction oil gas, the water of the related landing surface of meeting produces together, the water of the extraction It measures increasing.The general recovered water need to take re-injection measure, first, discharge pollution caused by earth's surface is reduced, second is that addedly Layer water promotes hydrocarbon stratum to escape.But the recovered water oil content is high, containing suspended matter high, direct re-injection meeting high containing salinity The serious pollution (oil-containing water can directly pollute water flooding with superficial water crossfire) of stratum underground water is caused, the oil dredged can be blocked Layer gap need to be handled the recovered water so as to which oil well oil-gas yield be caused to decline, could re-injection after the completion of processing.At present Traditional method only carries out direct re-injection after simple flocculation sediment, this brings greatly to oil field production capacity and oily area subsurface formations environment Hidden danger.

Utility model content

The utility model provides processing Produced Water In Oil-gas Fields, Ngi reinjection technology equipment, which overcomes recovered water in background technology Deficiency present in reinjection technology.

The used technical solution that the utility model solves its technical problem is：

A kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment, comprising：

Viscosity-falling unit, including heater and by heater, heater heating by heater with heat flow through or by The recovered water of heater；

Oil Water Sludge Separation device, including knockout tower, oil recovery apparatus and electric air floating device, which includes Oil Guide Slot, the oil guide groove are installed on knockout tower the surrounding that is open, which is equipped with separation water inlet, the spoil disposal for being located at separation tower bottom Mouth and separation water outlet, the electric air floating device are located in knockout tower can generate microbubble, and separation water inlet connection is heated Device makes the recovered water after viscosity reduction flow into knockout tower by separating water inlet, and the microbubble which generates drives extraction Viscous crude and asphalitine in water rise to the water surface, and the viscous crude and asphalitine of the water surface are skimmed by microbubble in oil guide groove；

Electric flocculation device including electric flocculation container and is located in electric flocculation container to obtain .OH ions and electrode ion First electrode group, electric flocculation container connect the separation water outlet of knockout tower；

Electrocatalysis oxidation apparatus, including process container and the electrocatalytic oxidation unit being located in process container, which holds Device connects the outlet of electric flocculation container；And

Physico-chemical precipitation clarifier, including Fining vessel and chemicals dosing plant, which connects the water outlet of process container Mouthful, which connects Fining vessel can add at least one of flocculant and coagulant into Fining vessel.

Among one embodiment：The viscosity-falling unit further includes heat exchanger, which has into pipeline and go out pipeline；It should It is connected into pipe outlet by heater, which enters viscosity-falling unit into pipeline certainly；This goes out the separation that pipeline connects knockout tower The import of water outlet and electric flocculation container.

Among one embodiment：The electric air floating device including the electrical generating means of microbubble and helps floating gas microvesicle generators；

The electrical generating means of the microbubble includes power supply and loaded in knockout tower and being immersed in the recovered water in knockout tower Second electrode group, the second electrode group include second plate and the second cathode, the second plate and the second cathode pass through circuit Electricity connects power supply two-stage respectively, and the second plate and the second cathode obtain electric energy bubbing, which floats into microbubble；

This helps floating gas microvesicle generators to include air pump, tracheae and loaded in knockout tower and the extraction that is immersed in knockout tower Outlet nozzle in water, the tracheae connect air pump and outlet nozzle, by air pump startup outlet nozzle are made to discharge gas, the gas float into Microbubble.

Among one embodiment：The electrocatalytic oxidation unit includes the 3rd electrode group being located in process container, the 3rd electricity Pole group includes third anode and the 3rd cathode, and electricity connects power supply two-stage respectively by circuit for the third anode and the 3rd cathode.

Among one embodiment：It further includes：

Sludge condensation filter-pressing device, including sludge condensation and sludge press filtration device；Connect grease mud the sludge condensation Separator, electric flocculation device and physico-chemical precipitation clarifier；The sludge press filtration device includes filter press, and filter press connection is dirty Mud concentration ground.

Compared with background technology, it has the following advantages that the technical program：

Recovered water through three phase separation separate fuel-displaced, sediment, then through electric flocculation, electrocatalytic oxidation, physico-chemical precipitation clarification at Reason realizes demulsification, de-oiling, goes suspended matter, the purpose of disinfection, re-injection after making water up to standard, first, energy oil recovery, environmental protection；Second, Recovered water is up to standard to realize re-injection；Third, water process operating cost is low；Fourth, social and economic significance is great.

First viscosity reduction separates again, reduces viscosity, improves mobility, improves efficiency.

Description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is the schematic diagram of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment.

Specific embodiment

Produced Water In Oil-gas Fields, Ngi reinjection treatment method, comprising：

Step (1), viscosity reduction step heat recovered water to reduce the viscosity of viscous crude and asphalitine in recovered water；

Step (2), Oil Water Sludge Separation step, the recovered water after viscosity reduction flow into knockout tower, the electric air floating device in knockout tower The microbubble of generation drives viscous crude and asphalitine rises to bring it to the water surface, the viscous crude of the water surface and asphalitine by microbubble skim into Be located on knockout tower in parameatal oil guide groove handle recycling, the weight containing mud be settled down to knockout tower bottom and it is defeated discharge with Pending, the recovered water for isolating viscous crude, asphalitine and the weight containing mud is pumped to next step processing；

Step (3), electric flocculation step, the recovered water of step (2) output is admitted to electric flocculation container, in the electric flocculation container Equipped with first electrode group, first electrode group obtains electric energy, and .OH ions are precipitated in electrolysis in water, and obtain electrode ion, both make extraction Water generates degradation oxidation reaction, and makes .OH ions and electrode ionization synthetic flocculant, and flocculant occurs to flocculate anti-with recovered water It answers and harmful substance in recovered water is flocculated into wadding, and then precipitate in case processing, flocculant such as iron hydroxide；

Step (4), electrocatalytic oxidation step generate electrocatalysis oxidation reaction, to generate .OH ions .OH ion damageds With the macromolecular structure of nuisance in recovered water is interrupted it is made to be degraded into small molecule, the degradation of small molecule nuisance in oxide and It realizes innoxious；

Step (5), physico-chemical precipitation clarification steps, the recovered water of step (4) output is interior to be added in flocculant and coagulant At least one makes recovered water further clarify, to reach re-injection requirement, flocculant such as iron hydroxide；

Step (6), sludge condensation press filtration step, concentration step (2), the sedimentation of step (3) and step (5), precipitation it is heavy Object, such as sediment, sludge drop, sediment, sediment after filter press concentration, as after filter press concentration sludge into cake mud.

Preferably, the recovered water of the step (2) output and the recovered water of inflow step (1) carry out heat exchange, are flowed into preheating The recovered water of step (1) reduces the temperature for the recovered water that step (2) exports, and reduces energy consumption, reduces cost.

Fig. 1 is refer to, Produced Water In Oil-gas Fields, Ngi reinjection technology equipment includes viscosity-falling unit 10, Oil Water Sludge Separation device 20, electricity Flocculation plant 30, electrocatalysis oxidation apparatus 40, physico-chemical precipitation clarifier 50, sludge condensation filter-pressing device 60 and electric-control system 70。

The viscosity-falling unit 10, including heater and by heater 11, heater heating is flowed through by heater 11 with heating Or flow by the recovered water of heater 11, to reduce the viscosity of viscous crude and asphalitine in recovered water；This is by heater as being conveying Pipeline or container.

The Oil Water Sludge Separation device 20, including knockout tower, oil recovery apparatus and electric air floating device, which includes Oil guide groove, the oil guide groove are installed on knockout tower the surrounding that is open, which is equipped with separation water inlet, is located at separation tower bottom Mud discharging mouth and separation water outlet, the electric air floating device are located in knockout tower can generate microbubble, which connects quilt Heater makes the recovered water after viscosity reduction flow into knockout tower by separating water inlet, and the microbubble which generates drives Viscous crude and asphalitine in recovered water rise to the water surface, and the viscous crude and asphalitine of the water surface are skimmed in oil guide groove by microbubble with processing Recycling, the weight containing mud are settled down to knockout tower bottom and pass through the defeated discharge of slush pump with pending.

Among the present embodiment：The oil guide groove is as included a ring wall and one being fixed in around knockout tower tower body by ring wall periphery The periphery wall that edge upwardly extends, forms oil guide groove between knockout tower tower body, ring wall, the periphery wall, and periphery wall upper port is located at point On tower body upper port from tower.Water is pumped to next work by the moisture that importing oil guide groove viscous crude and asphalitine are taken out of by electric pump Section is pending (in electric flocculation container).The separation water inlet can be to be located at the middle part of knockout tower tower body or including inlet tube, Inlet tube is supreme to be inserted into the recovered water in tower body down, and feed liquor infratubal port is located under the water surface of the recovered water in tower body. As needed, ventilation device is may also include, ventilation device is located at separation column so that gas to be accelerated to discharge.Wherein：Oil guide groove connects Logical trapped fuel device, trapped fuel device that oil is located at into oil guide groove and flowing to outside equipment (such as bucket, tank, slot, pipe).According to need Will, which is arranged to taper sedimentation face, in order to precipitate, to collect the sludge to precipitate.

The electric flocculation device 30, including electric flocculation container and the first electrode group being located in electric flocculation container, electric flocculation is held Device connects the separation water outlet of knockout tower, and first electrode group obtains electric energy, in water electrolysis .OH ions are precipitated, and obtain electrode from Son had not only made recovered water generate degradation oxidation reaction, but also has made .OH ions and electrode ionization synthetic flocculant, flocculant and extraction Water occurs flocculation reaction and harmful substance in recovered water is flocculated into wadding, and then precipitates in case processing.

Among the present embodiment：The structure of the electric flocculation device can refer to the applicant's earlier application《For sewage disposal Electric flocculation device and method》.The electric flocculation device uses the three-diemsnional electrode of extra specific surface area, and recovered water is in super large specific surface Long-pending three-diemsnional electrode effect is lower realizes the degradation oxidation reaction of macromolecular and chemical substance, and makes its chemical composition and be degraded Macromolecular substances can be flocculated the micrograined texture of agent absorption with the formation of three-diemsnional electrode substance catalytic reaction, and be deposited removal.

The electrocatalysis oxidation apparatus 40, including process container and the electrocatalytic oxidation unit being located in process container, electricity is urged Changing oxidation unit includes the 3rd electrode group being located in process container, and the 3rd electrode group includes third anode and the 3rd cathode, Electricity connects power supply two-stage respectively by circuit for the third anode and the 3rd cathode, which generates ion .OH, O₂, the Three cathode surfaces generate H₂、H₂O₂.OH ion damageds and interrupt the macromolecular structure of nuisance in recovered water and be degraded into it Small molecule, the degradation of small molecule nuisance are realized innoxious in oxide.The bacterium that the device 40 can be eliminated in recovered water reaches The index of bacterial content requirement in reinjected water.

Among the present embodiment：The strong .OH ions of oxidisability and a large amount of oxygen are generated on third anode surface, in the 3rd cathode Surface generates a small amount of H₂O₂With a large amount of hydrogen.The effusion of hydrogen can be sufficiently agitated water body in process container, and water body improves effect The good oxygen of fruit is then conducive to oxygen content of water rising.And H .OH₂O₂With strong oxidizing property .OH can be destroyed and interrupted in water body The macromolecular structure of nuisance and it is made to be degraded into small molecule, final degradation (such as H harmless in oxide₂S molecules are in .OH The lower strand of strong attack be destroyed, wherein sulphur changes into sulfuric acid salt component, and H is combined with .OH is converted into water, thus foul smell disappears Except), H₂O₂It is played a role in oxidation process.Wherein：Electricity in a device is set in electrocatalysis oxidation apparatus in organic matter The ion (.OH) that catalytic oxidation unit generates aoxidizes and changes into carbon dioxide strongly, is returned in air；Foul smell (main component It is hydrogen sulfide) it is broken strand due to quilt (.OH) seizes a hydrogen appearance therefore can not form hydrogen sulfide molecule, and make smelly Gas eliminates.

The physico-chemical precipitation clarifier 50, including Fining vessel and chemicals dosing plant, which connects process container Water outlet, the affixed Fining vessel of the chemicals dosing plant add at least one of flocculant and coagulant into Fining vessel with energy, So that recovered water physico-chemical precipitation realizes clarification, at least one of the addition flocculant and coagulant can also adjust the pH of recovered water Value.

The sludge condensation filter-pressing device 60, including sludge condensation and sludge press filtration device；Connect oil the sludge condensation Sediment, sediment are such as evacuated to sludge by cement separator, electric flocculation device and physico-chemical precipitation clarifier using slush pump Concentration ground, those objects are stood in sludge condensation, realize object water stratification, and discharge upper water forms concentration, i.e. concentration and settlement, The sludge of precipitation；The sludge press filtration device includes filter press, and the filter press is with connecting sludge condensation, dense with use filter press press filtration Contracting sludge is into mud cake.The press filtration water that the upper water and filter press are press-filtered out is evacuated to electrocatalysis oxidation apparatus 40.

Among the present embodiment：Electric air floating device including the electrical generating means of microbubble and helps floating gas microvesicle generators.

The electrical generating means of the microbubble includes power supply and loaded in knockout tower and being immersed in the recovered water in knockout tower Second electrode group, the second electrode group include second plate and the second cathode, the second plate and the second cathode pass through circuit Electricity connects power supply two-stage respectively, second plate and the second cathode at intervals of working fluid (recovered water), to form electrical circuit, this Two anodes and the second cathode obtain electric energy bubbing, which floats into microbubble；The electrode group group number can be it is multigroup, such as it is multigroup The then anode of multigroup electrode group and cathode separation interlaced arrangement, the anode of multigroup electrode group is connected in series or in parallel, multigroup Electrode group cathode it is connected in series or in parallel.The electrode material of the electrode group is as being graphite, titanium-based oxide coated electrode, titanium Base modified electrode, insoluble ceramic electrode, diamond film electrode, Graphene electrodes, insoluble alloy electrode and Ti electrode.The electricity The selection of pole material depending on the situation of required pneumatically supported substance and working fluid, such as：Need the microbubble of negatively charged Situation, then based on oxygen bubbles, then using analysis oxygen electrode；Need the situation of positively charged microbubble, then using bubble hydrogen as It is main, then using hydrogen-precipitating electrode.First, the size of the bubble diameter of microbubble (hereinafter referred to as bubble), to generate the rate of bubble correlation；Electricity Current density is bigger, generates that the rate of bubble is faster, then the yield of bubble is higher, mutually attracts what is merged between bubble and bubble Probability is bigger, and the grain size (bubble diameter) of formation effectively pneumatically supported bubble is also bigger, otherwise smaller；So electrode group can be passed through The size for calculating to control bubble bubble diameter of electrode area.Second, bubbles volume is related to the total current intensity for being applied to electrode group, Total current intensity is bigger, then the raw bubbles volume of electricity is bigger, otherwise smaller；It so can be by adjusting being applied to the total current of electrode group Intensity controls the number of bubbles volume.Third, bubble property is related to the material of the anode and cathode area distributions of electrode and electrode 's；By adjusting with select or combination is mixed meets the electric angry property steeped, such as：The positively charged bubble of need (such as ore dressing Particle wastewater suspended substance removes), then easy hydrogen-precipitating electrode is selected, and hydrogen-precipitating electrode area is accumulated more than another pole-face；Need negatively charged Oxygen bubbles when (such as during pure metal particles mineral), then select easily analysis oxygen electrode, and easily analysis oxygen electrode area is more than another pole Area；For the occasion of no electrical requirements, then easy gassing (hydrogen and oxygen) electrode is selected, and area equation or hydrogen-precipitating electrode are big In analysis oxygen electrode area, it is that bubbles volume can be reduced to analyse oxygen area certainly to be more than hydrogen-precipitating electrode area can similarly generate microbubble It is, both relatively low the effect of electricity anger bubble that (principle is calculated from the quantity of bubble, and the quantity and volume of bubble hydrogen are The several times of oxygen bubbles).

This helps floating gas microvesicle generators to include air pump, tracheae and loaded in knockout tower and being immersed in just going out in knockout tower Outlet nozzle in water, the tracheae connect air pump and outlet nozzle, by air pump startup outlet nozzle are made to discharge gas, the gas float into Microbubble.The outlet nozzle as include it is multiple communicate and interlaced arrangement or the exhaust pipe that is arranged side by side, exhaust pipe is closed at both ends and opens Equipped with multiple inside and outside perforative gas outlets, gas is discharged by gas outlet, is such as sprayed.As needed, one group of outlet nozzle can be set, Multigroup outlet nozzle can be set, as multigroup, outlet nozzle can be arranged or, horizontally disposed up and down.

The inlet of the inlet tube is located at the electrical generating means of microbubble, helps on floating gas microvesicle generators, so that into The liquid that liquid pipe enters flows through the electrical generating means of microbubble, helps after floating gas microvesicle generators from leakage fluid dram discharge, completes one A electric floating course of work.The installation site of the electrical generating means of the microbubble can be according to the property of working fluid and flotation object The size of grain is selected, and is such as separately mounted to separation tower bottom or middle part.This helps the installation site of floating gas microvesicle generators It can be selected according to the property of working fluid and the granular size of the suspended matter of flotation or air supporting removal, it can be with microbubble electricity Property generating means load in mixture, can also be mounted in the top or lower part of the electrical generating means of microbubble, installation site is as by following selection： When needing air supporting or the atomic fine grained of flotation, then the electrical generating means of microbubble is mounted on the bottom of knockout tower, helps floating air micro-bubbles Generator is located on the electrical generating means of microbubble, i.e., electrode group and outlet nozzle are arranged at intervals up and down, when generating means generates Atomic thin bubble floating to when helping floating gas microvesicle generators, helped what floating gas microvesicle generators discharged floating bubble is helped to carry under one's arms The rapid surface for floating up to working fluid.Need air supporting or flotation compared with coarse granule and, during the in vivo suspended particulate substance of working solution, then Floating gas microvesicle generators is helped to be mounted on the bottom of knockout tower, the electrical generating means of microbubble, which is mounted on, helps floating air micro-bubbles to occur On device, i.e., upper under electrode group and outlet nozzle to be arranged at intervals, the microbubble that the electrical generating means of microbubble generates sweeps along particulate matter After be not easy to sink to bottom, can by from bottom swarm help floating gas microvesicle generators generate bubble carry under one's arms emersion working solution body surface Face.As needed, the electrode group of the electrical generating means of microbubble can be multigroup that multigroup can be that part of horizontal is arranged, part Arrangement up and down；It helps floating gas microvesicle generators that can include multiple outlet nozzles, is arranged above and below multiple outlet nozzles or horizontally disposed； Can be electrode group, outlet nozzle interlaced arrangement.As needed, the electric air floating device of the present embodiment can only there are one or, multiple electricity Air-floating apparatus is composed in series large electric and floats unit one electric floating course of work of completion.

The viscosity-falling unit further includes heat exchanger 12, which has into pipeline and go out pipeline；It should be into pipe outlet It connects by heater, which enters viscosity-falling unit into pipeline certainly；This goes out the separation water outlet and electricity that pipeline connects knockout tower The import of flocculation container.Among the present embodiment, the structure of the heat exchanger, including multiple heat exchange units and a Warm keeping sheet Member, which connects multiple heat exchange units so that multiple heat exchange units are spaced and independently keep the temperature, the heat exchange list Member set point into pipeline and separate pipeline and enable point into the exhaust fluid in pipeline with separate the heating fluid heat exchange in pipeline； The first communication channel and the second communication channel are set between per adjacent two heat exchange unit, which connects adjacent two heat exchange unit Point into pipeline, what which connected adjacent two heat exchange unit separates pipeline, by the plurality of heat exchange unit string Connection is logical, and forms and above-mentioned into pipeline and go out pipeline.In the heat exchange unit, divide into the exhaust fluid flow direction in pipeline and divide The heating fluid flow direction gone out in pipeline is opposite.This point is into the exhaust fluid flow in pipeline and separates the heating fluid stream in pipeline It measures equal.The heat-insulation unit can be that the first communication channel and the second communication channel are kept the temperature.The heat exchange unit also sets heat exchange medium, leads to Crossing heat exchange medium makes point into the exhaust fluid in pipeline and separates the heating fluid heat exchange in pipeline.It is returned using heat exchanger It receives using the thermal energy for discharging water, to be lifted into the sewage temperature of viscosity-falling unit, is lowered into the recovered water of electric flocculation container Temperature saves to promote the electric energy or thermal energy of the temperature of the recovered water of the device.

Electric control system controls connection heater, Oil Water Sludge Separation device, electric flocculation device, electrocatalysis oxidation apparatus, object Change precipitation clarifier, sludge condensation filter-pressing device.

The above is only the utility model preferred embodiment, therefore cannot limit the utility model implementation according to this It is new all should still to belong to this practicality for scope, i.e., the equivalent changes and modifications made according to the utility model patent scope and description In the range of type covers.

Claims (5)

1. a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment, it is characterised in that：Comprising：

Viscosity-falling unit, including heater and by heater, heater heating is heated by heater with heating to flow through or into The recovered water of device；

Oil Water Sludge Separation device, including knockout tower, oil recovery apparatus and electric air floating device, which includes oil guide groove, The oil guide groove is installed on knockout tower the surrounding that is open, which is equipped with separation water inlet, the mud discharging mouth for being located at separation tower bottom With separation water outlet, which is located in knockout tower can generate microbubble, which connects by heater, The recovered water after viscosity reduction is made to flow into knockout tower by separating water inlet, the microbubble which generates is driven in recovered water Viscous crude and asphalitine rise to the water surface, the viscous crude and asphalitine of the water surface are skimmed by microbubble in oil guide groove；

Electric flocculation device including electric flocculation container and is located in electric flocculation container to obtain the first of .OH ions and electrode ion Electrode group, electric flocculation container connect the separation water outlet of knockout tower；

Electrocatalysis oxidation apparatus, including process container and the electrocatalytic oxidation unit being located in process container, which connects The outlet of energization flocculation container；And

Physico-chemical precipitation clarifier, including Fining vessel and chemicals dosing plant, which connects the water outlet of process container, should Chemicals dosing plant connects Fining vessel can add at least one of flocculant and coagulant into Fining vessel.

2. a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment according to claim 1, it is characterised in that：The viscosity-falling unit is also Including heat exchanger, which has into pipeline and goes out pipeline；It should be connected into pipe outlet by heater, the recovered water is certainly Enter viscosity-falling unit into pipeline；This goes out pipeline and connects the separation water outlet of knockout tower and the import of electric flocculation container.

3. a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment according to claim 1 or 2, it is characterised in that：The electric floating Device including the electrical generating means of microbubble and helps floating gas microvesicle generators；

The electrical generating means of the microbubble include power supply and loaded in knockout tower and be immersed in the recovered water in knockout tower the Two electrode groups, the second electrode group include second plate and the second cathode, and the second plate and the second cathode are distinguished by circuit Electricity connects power supply two-stage, and the second plate and the second cathode obtain electric energy bubbing, which floats into microbubble；

This helps floating gas microvesicle generators to include air pump, tracheae and loaded in knockout tower and being immersed in the recovered water in knockout tower Outlet nozzle, which connects air pump and outlet nozzle, by air pump startup outlet nozzle is made to discharge gas, which floats into micro- gas Bubble.

4. a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment according to claim 1 or 2, it is characterised in that：The electro-catalysis Oxidation unit includes the 3rd electrode group being located in process container, and the 3rd electrode group includes third anode and the 3rd cathode, should Electricity connects power supply two-stage respectively by circuit for third anode and the 3rd cathode.

5. a kind of Produced Water In Oil-gas Fields, Ngi reinjection technology equipment according to claim 1 or 2, it is characterised in that：It further includes：

Sludge condensation filter-pressing device, including sludge condensation and sludge press filtration device；Connect Oil Water Sludge Separation the sludge condensation Device, electric flocculation device and physico-chemical precipitation clarifier；The sludge press filtration device includes filter press, and filter press connection sludge is dense Contracting ground.