1. A method of ultrafiltration of petroleum wastewater, the method comprising:

determining the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered;

determining the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determining the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

determining the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum sewage to be ultrafiltered, determining the pH value of a target liquid obtained by mixing the nutrient medium and the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria, and determining the oil removal time of the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

adjusting the pH value of the target liquid according to the pH value, adding the components of the nutrient medium according to the adding amount of the components in the nutrient medium, adding each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria, and starting timing;

and under the condition that the timing time reaches the oil removal time, filtering the oil sewage to be ultrafiltered after oil removal through an ultrafiltration membrane, wherein the pore diameter of a filter hole of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

2. The method of claim 1, wherein the determining the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered comprises:

acquiring unit volume of the petroleum sewage to be ultrafiltered, and determining density parameters of the unit volume of the petroleum sewage to be ultrafiltered;

inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the density parameters of the petroleum sewage corresponding to the content of each type of hydrocarbon compound in the training sample;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

3. The method of ultrafiltration of petroleum wastewater according to claim 1, further comprising:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

4. The method for ultrafiltration of petroleum wastewater according to any of claims 1 to 3, wherein prior to said determining the content of each hydrocarbon compound and the content of sulfide in the petroleum wastewater to be ultrafiltered, said method comprises:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

5. The method for ultrafiltration of petroleum wastewater according to claim 1, wherein the method is applied to an ultrafiltration device for petroleum wastewater, the device comprising:

a first determination module configured to determine the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered;

the second determination module is configured to determine the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determine the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

the third determination module is configured to determine the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum wastewater to be ultrafiltered, determine the pH value of a target liquid after the nutrient medium is mixed with the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria, and determine the oil removal time of the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

the timing module is configured to adjust the pH value of the target liquid according to the pH value, put the components of the nutrient medium according to the input amount of the components in the nutrient medium, put each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria and start timing;

and the control module is configured to filter the deoiled petroleum sewage to be ultrafiltered through an ultrafiltration membrane under the condition that the timing duration reaches the deoiling duration, wherein the pore diameter of a filter pore of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

6. The method of ultrafiltration of petroleum wastewater according to claim 5, wherein said first determination module is configured for:

acquiring unit volume of the petroleum sewage to be ultrafiltered, and determining density parameters of the unit volume of the petroleum sewage to be ultrafiltered;

inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the density parameters of the petroleum sewage corresponding to the content of each type of hydrocarbon compound in the training sample;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

7. The method of ultrafiltration of petroleum wastewater according to claim 5, wherein said apparatus further comprises a light control module configured for:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

8. The method of ultrafiltration of petroleum wastewater according to any of claims 5 to 7, wherein the apparatus further comprises a pretreatment control module configured for:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

Background

The petroleum sewage is industrial wastewater generated by extracting petroleum from crude oil, and the petroleum sewage contains hydrocarbon substances which are difficult to remove through processes such as filtration, gravity oil removal, coagulation, rough filtration, pressure oil removal (cyclone, coarse granulation) and the like. If the crude oil sewage containing hydrocarbon substances is discharged into nature, not only red tide and other crises are easily caused, but also water sources are polluted, environment pollution is caused, and drinking water pollution is caused.

In a related scene, through a biological method and an ultrafiltration membrane process, free oil, emulsified oil and other organic matters in oily sewage are effectively removed by using microorganisms, so that the pollution of the oil to an ultrafiltration membrane is reduced, but the input amount of the microorganisms is difficult to accurately control, incomplete oil removal can occur if the input amount is too small, the microorganisms can enter the nature if the input amount is too large, the sanitation of a water source can be influenced, the input type of the microorganisms is difficult to accurately control, and the problem of incomplete oil removal can also exist.

Therefore, how to improve the oil removing accuracy of the petroleum sewage becomes a problem to be solved urgently.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an ultrafiltration method of petroleum sewage, which solves the problem of lower oil removal accuracy of the petroleum sewage in the related technology.

In order to achieve the purpose, the invention is realized by the following technical scheme: provided is a petroleum wastewater ultrafiltration method, comprising:

determining the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered;

determining the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determining the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

determining the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum sewage to be ultrafiltered, determining the pH value of a target liquid obtained by mixing the nutrient medium and the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria, and determining the oil removal time of the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

adjusting the pH value of the target liquid according to the pH value, adding the components of the nutrient medium according to the adding amount of the components in the nutrient medium, adding each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria, and starting timing;

and under the condition that the timing time reaches the oil removal time, filtering the oil sewage to be ultrafiltered after oil removal through an ultrafiltration membrane, wherein the pore diameter of a filter hole of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

Preferably, the determining the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered comprises:

acquiring unit volume of the petroleum sewage to be ultrafiltered, and determining density parameters of the unit volume of the petroleum sewage to be ultrafiltered;

inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the density parameters of the petroleum sewage corresponding to the content of each type of hydrocarbon compound in the training sample;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

Preferably, the method further comprises:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

Preferably, before the determining the content of each hydrocarbon compound and the content of sulfide in the petroleum wastewater to be ultrafiltered, the method comprises:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

Preferably, the method is applied to an ultrafiltration device of petroleum wastewater, the device comprising:

a first determination module configured to determine the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered;

the second determination module is configured to determine the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determine the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

the third determination module is configured to determine the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum wastewater to be ultrafiltered, determine the pH value of a target liquid after the nutrient medium is mixed with the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria, and determine the oil removal time of the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

the timing module is configured to adjust the pH value of the target liquid according to the pH value, put the components of the nutrient medium according to the input amount of the components in the nutrient medium, put each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria and start timing;

and the control module is configured to filter the deoiled petroleum sewage to be ultrafiltered through an ultrafiltration membrane under the condition that the timing duration reaches the deoiling duration, wherein the pore diameter of a filter pore of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

Preferably, the first determining module is configured to:

acquiring unit volume of the petroleum sewage to be ultrafiltered, and determining density parameters of the unit volume of the petroleum sewage to be ultrafiltered;

inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the density parameters of the petroleum sewage corresponding to the content of each type of hydrocarbon compound in the training sample;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

Preferably, the apparatus further comprises a light control module configured for:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

Preferably, the apparatus further comprises a preprocessing control module configured to:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

The invention also provides a computer readable medium having stored thereon a computer program which, when executed by a processing apparatus, performs the steps of the method of any one of the first aspect.

The present invention also provides an electronic device comprising:

a storage device having a computer program stored thereon;

processing means for executing the computer program in the storage means to carry out the steps of the method of any one of the first aspect.

Advantageous effects

The invention provides an ultrafiltration method of petroleum sewage. Compared with the prior art, the method has the following beneficial effects:

(1) the ultrafiltration method of the petroleum sewage can reasonably determine the types of the microorganisms and the input amount of the dry powder microbial inoculum of each microorganism, improves the accuracy of inputting the dry powder microbial inoculum of the microorganisms, avoids incomplete oil removal caused by insufficient input microbial biomass, and avoids influence on a water source caused by excessive input microorganisms. The oil removing accuracy of the petroleum sewage is improved.

(2) The ultrafiltration method of the petroleum sewage can determine the aperture of the filter membrane of the ultrafiltration membrane according to the variety of the added strains and the content of each hydrocarbon compound, can effectively prevent microorganisms from entering the nature, and can effectively protect the environment.

Drawings

FIG. 1 is a flow chart of an ultrafiltration method of petroleum wastewater according to the present invention.

Fig. 2 is a flowchart for implementing step S11 according to the present invention.

FIG. 3 is a block diagram of an ultrafiltration device for petroleum wastewater according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an ultrafiltration method of petroleum sewage.

Fig. 1 is a flow chart of an ultrafiltration method of petroleum wastewater according to the present invention, as shown in fig. 1, the method comprising the steps of:

s11, determining the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered;

s12, determining the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determining the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

s13, determining the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum sewage to be ultrafiltered, determining the pH value of a target liquid obtained by mixing the nutrient medium and the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria, and determining the oil removal duration of the petroleum sewage to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

s14, adjusting the pH value of the target liquid according to the pH value, adding the components of the nutrient medium according to the adding amount of the components in the nutrient medium, adding each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria, and starting timing;

s15, filtering the deoiled petroleum sewage to be ultrafiltered through an ultrafiltration membrane under the condition that the timing duration reaches the deoiling duration, wherein the aperture of a filter hole of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

The size of each type of bacteria determines the aperture of the filtration pore of the ultrafiltration membrane, so that microbial strains are prevented from entering the natural world, and the environment protection is facilitated.

Optionally, the method further comprises determining a concentration of a cleaning solution for cleaning the ultrafiltration membrane and a time interval duration for cleaning the ultrafiltration membrane for each type of bacteria species.

Preferably, fig. 2 is a flowchart for implementing step S11 according to the present invention. In step S11, the determining the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered includes:

s111, obtaining unit volume of the petroleum sewage to be ultrafiltered, and determining a density parameter of the unit volume of the petroleum sewage to be ultrafiltered;

s112, inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the content of each hydrocarbon compound in the training sample corresponding to the density parameters of the petroleum sewage;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

Preferably, the method further comprises:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

Preferably, before the determining the content of each hydrocarbon compound and the content of sulfide in the petroleum wastewater to be ultrafiltered, the method comprises:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

During specific implementation, the viscosity of the petroleum sewage to be ultrafiltered can be determined, and the aperture size of the primary filtering membrane, the thickness of the primary filtering membrane and the membrane surface flow rate of the primary filtering can be determined according to the viscosity of the petroleum sewage to be ultrafiltered and the diameter of the solid.

Based on the same inventive concept, please refer to fig. 3, the present invention further provides a technical solution: an ultrafiltration device for petroleum wastewater, said device 300 comprising: a first determination module 310, a second determination module 320, a third determination module 330, a timing module 340, and a control module 350.

A first determination module 310 configured to determine the content of each hydrocarbon compound in the petroleum wastewater to be ultrafiltered;

a second determining module 320, configured to determine the viable count of each type of bacteria in the oil removing microbial inoculum according to the content of each hydrocarbon compound, and determine the inoculation amount of the corresponding type of bacteria according to the viable count of each type of bacteria;

a third determining module 330, configured to determine the input amount of each component in a nutrient medium according to the inoculation amount of each type of bacteria and the volume of the petroleum wastewater to be ultrafiltered, determine the PH value of the target liquid after the nutrient medium is mixed with the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria, and determine the oil removal duration of the petroleum wastewater to be ultrafiltered according to the viable count of each type of bacteria and the inoculation amount of each type of bacteria;

a timing module 340, configured to adjust the PH value of the target liquid according to the PH value, and put the components of the nutrient medium according to the input amount of the components in the nutrient medium, and put each type of dry powder microbial inoculum according to the inoculation amount of each type of bacteria, and start timing;

and a control module 350 configured to perform a filtering process on the deoiled petroleum wastewater through an ultrafiltration membrane when the timing duration reaches the deoiling duration, wherein a pore diameter of the ultrafiltration membrane is determined according to the content of each hydrocarbon compound and the type of each type of bacteria.

Preferably, the first determining module 310 is configured for:

acquiring unit volume of the petroleum sewage to be ultrafiltered, and determining density parameters of the unit volume of the petroleum sewage to be ultrafiltered;

inputting the density parameters of the petroleum sewage to be ultrafiltered into a component prediction model to obtain the content of each hydrocarbon compound in the petroleum sewage to be ultrafiltered, wherein the component prediction model is obtained by training a training sample marked with the type of the hydrocarbon compound and the density parameters of the petroleum sewage corresponding to the content of each type of hydrocarbon compound in the training sample;

and the component prediction model is used for determining the type of the hydrocarbon compounds in the petroleum sewage to be ultrafiltered and the content of the hydrocarbon compounds of the corresponding type according to the density parameter of the petroleum sewage to be ultrafiltered.

Preferably, the apparatus further comprises a light control module configured for:

determining illumination intensity information and temperature information of the target liquid within the timing duration according to the viable count of each type of bacteria;

and controlling the illumination duration and the corresponding illumination intensity of the target liquid within the timing duration according to the illumination intensity information and the temperature information.

Preferably, the apparatus further comprises a preprocessing control module configured to:

determining the diameter of solid in the petroleum sewage to be ultrafiltered;

and determining the pore size of the filter membrane for primary filtration, the thickness of the filter membrane for primary filtration and the membrane surface flow rate for primary filtration according to the diameter size of the solid matter.

Based on the same inventive concept, the present invention also provides a computer readable medium having stored thereon a computer program which, when being executed by a treatment device, realizes the steps of any one of the methods for ultrafiltration of petroleum wastewater.

Based on the same inventive concept, the present invention also provides an electronic device, comprising:

a storage device having a computer program stored thereon;

a processing device for executing the computer program in the storage device to realize the steps of the petroleum wastewater ultrafiltration method.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.