Integrated sewage treatment method and system, storage medium and electronic equipment

Abstract

The invention provides an integrated sewage treatment method and system, a storage medium and electronic equipment. The method comprises the following steps: collecting sewage to be treated; carrying out pretreatment on the sewage to be treated; conveying the pretreated sewage to a bio-membrane reactor and starting bio-membrane treatment; conveying the sewage treated by the biological membrane to a multi-stage membrane assembly, and starting multi-stage membrane treatment; and carrying out post-treatment on the sewage subjected to the multi-stage membrane treatment. According to the integrated sewage treatment method disclosed by the invention, different types of pollutants are efficiently removed by integrating a biological membrane technology and a plurality of membrane filtration technologies, and deep treatment and recycling of sewage are realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an integrated sewage treatment method, system, storage medium and electronic equipment. Background Art

[0002] In the development of modern cities and industries, sewage treatment has become an important issue. With the advancement of industrialization and urbanization, the types and quantities of sewage have continued to increase, causing tremendous pressure on the environment. Traditional sewage treatment technologies mainly include three types: physical, chemical and biological. Although these methods can remove pollutants to a certain extent, they each have many limitations and are difficult to cope with the challenges of today's increasingly complex sewage composition.

[0003] The physical method mainly separates suspended matter in sewage by means of sedimentation, filtration and other means. This method is easy to operate and low in cost, but its treatment effect is limited, especially for soluble pollutants. The chemical method achieves purification by adding chemical agents to cause pollutants in sewage to react chemically and form precipitation. However, the chemical method requires a large amount of chemical reagents, which is not only costly, but may also introduce new pollutants. Biological treatment technology uses microorganisms to degrade organic matter in sewage. This method has a good removal effect on organic matter, but it is not effective for inorganic matter and some organic pollutants that are difficult to biodegrade.

[0004] Therefore, how to provide a sewage treatment method to cope with the current complex and changeable sewage situation has become a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] In view of the shortcomings of the prior art mentioned above, the object of the present invention is to provide an integrated sewage treatment method, system, storage medium and electronic equipment, which can efficiently remove different types of pollutants by integrating biofilm technology and multiple membrane filtration technologies, thereby realizing deep treatment and recycling of sewage.

[0006] In a first aspect, the present invention provides an integrated sewage treatment method, the method comprising the following steps:

[0007] Collecting sewage for treatment;

[0008] Pre-treating the sewage to be treated;

[0009] conveying the pretreated sewage to the biofilm reactor and starting the biofilm treatment;

[0010] The wastewater treated by the biofilm is transported to the multi-stage membrane module and the multi-stage membrane treatment is started;

[0011] The wastewater after multi-stage membrane treatment is post-treated.

[0012] In an implementation of the first aspect, the pretreatment of the wastewater to be treated includes grille treatment, screen treatment, grit chamber treatment, and sedimentation tank treatment.

[0013] In an implementation of the first aspect, the biofilm reactor includes an anaerobic reactor, an aerobic reactor and a biofilm tank.

[0014] In an implementation of the first aspect, conveying the pretreated sewage to the biofilm reactor and starting the biofilm treatment comprises the following steps:

[0015] Adjusting the control parameters of the biofilm reactor to preset values ​​based on the treatment objectives and basic characteristics of the sewage to be treated;

[0016] Preliminarily removing organic pollutants from the wastewater to be treated under anaerobic conditions based on the anaerobic reactor;

[0017] Based on the aerobic reactor, the wastewater to be treated is subjected to secondary removal of organic pollutants under oxygen-rich conditions;

[0018] The wastewater to be treated is subjected to biofilm adsorption and organic matter degradation based on the biofilm pool.

[0019] In an implementation of the first aspect, the multi-stage membrane assembly includes a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane, and a reverse osmosis membrane.

[0020] In an implementation of the first aspect, transporting the sewage after biofilm treatment to the multi-stage membrane module and starting the multi-stage membrane treatment includes the following steps:

[0021] Removing larger particles, suspended matter and some bacteria from the sewage through the microfiltration membrane;

[0022] Removing smaller particles, suspended matter and specific viruses from the sewage through the ultrafiltration membrane;

[0023] Removing small molecular organic matter and part of inorganic salts from the sewage through the nanofiltration membrane;

[0024] The organic pollutants and inorganic ions of the sewage are removed by the reverse osmosis membrane.

[0025] In an implementation of the first aspect, post-processing the sewage after multi-stage membrane treatment includes the following steps:

[0026] The wastewater treated by the multi-stage membrane is subjected to pH adjustment and sterilization to ensure that the wastewater meets the discharge standard or reuse standard.

[0027] In a second aspect, the present invention provides an integrated sewage treatment system, the system comprising a collection module, a pretreatment module, a biofilm treatment module, a multi-stage membrane treatment module and a post-treatment module;

[0028] The collection module is used to collect sewage to be treated;

[0029] The pretreatment module is used to pretreat the sewage to be treated;

[0030] The biofilm treatment module is used to transport the pretreated sewage to the biofilm reactor and start the biofilm treatment;

[0031] The multi-stage membrane treatment module is used to transport the sewage after biofilm treatment to the multi-stage membrane assembly and start the multi-stage membrane treatment;

[0032] The post-processing module is used to post-process the sewage after multi-stage membrane treatment.

[0033] In a third aspect, the present invention provides an electronic device, the electronic device comprising: a processor and a memory;

[0034] The memory is used to store computer programs;

[0035] The processor is used to execute the computer program stored in the memory so that the electronic device performs the above-mentioned integrated sewage treatment method.

[0036] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by an electronic device, implements the above-mentioned integrated sewage treatment method.

[0037] As described above, the integrated sewage treatment method, system, storage medium and electronic device of the present invention have the following features:

[0038] Beneficial effects:

[0039] The integrated sewage treatment method, system, storage medium and electronic device described in the present invention can achieve efficient water purification: through the integrated use of biofilm reactors, organic pollutants are removed in a targeted manner, and nutrients such as nitrogen and phosphorus are effectively treated. This shows the fine control of different microbial communities and reaction conditions in the biological treatment link. Through the combined action of multi-stage membrane components such as microfiltration, ultrafiltration, nanofiltration and reverse osmosis, pollutants of different particle sizes are intercepted and separated, demonstrating innovation in the application of membrane technology and improving the fineness of sewage treatment and effluent quality. The present invention forms a multi-stage treatment system by combining physical, chemical and biological methods. This combination not only optimizes the treatment effect, but also improves the treatment efficiency and ensures the comprehensive removal of different pollutants.

[0040] In addition, the present invention has certain adaptability and flexibility: it takes into account sewage of different types, concentrations and particle sizes, demonstrating its applicability and flexible adjustment capabilities in design, and can adjust the treatment strategy accordingly according to the actual sewage characteristics. It also emphasizes the minimization of environmental impact and the recycling of resources during sewage treatment. For example, the biogas produced by anaerobic reactors can be used as energy, reflecting the concept of sustainable development and circular economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 Shown is a flow chart of an integrated sewage treatment method according to an embodiment of the present invention;

[0042] Figure 2 Shown is a pre-treatment flow chart of an integrated sewage treatment method according to an embodiment of the present invention;

[0043] Figure 3 Shown is a biofilm treatment flow chart of an integrated sewage treatment method according to an embodiment of the present invention;

[0044] Figure 4 Shown is a multi-stage membrane treatment flow chart of an integrated sewage treatment method according to an embodiment of the present invention;

[0045] Figure 5 Shown is a post-processing flow chart of an integrated sewage treatment method of the present invention in one embodiment;

[0046] Figure 6 It is a schematic structural diagram of an integrated sewage treatment system according to an embodiment of the present invention;

[0047] Figure 7 It is a schematic structural diagram of an electronic device of the present invention in one embodiment. DETAILED DESCRIPTION

[0048] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0049] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0050] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0051] like Figure 1 As shown, in one embodiment, the integrated sewage treatment method of the present invention includes steps S11 to S15.

[0052] Step S11, collecting sewage to be treated.

[0053] Step S12: pre-treating the wastewater to be treated.

[0054] Specifically, the pretreatment of the wastewater to be treated includes grille treatment, screen treatment, grit chamber treatment, and sedimentation tank treatment.

[0055] Pretreatment of the wastewater to be treated includes steps such as screen treatment, screen treatment, sand settling tank treatment, and sedimentation tank treatment. These steps are intended to remove large particles and suspended solids in the wastewater to provide good water quality conditions for subsequent treatment. The pretreatment module mainly removes large particles and suspended solids through physical methods such as screens and sedimentation tanks. In one embodiment, the code of the pretreatment module is as follows:

[0056] Python

[0057] def pretreatment(raw_water):

[0058] #Simulation pretreatment: Removal of large particles and suspended solids

[0059] prepared_water=raw_water.filter(large_particles=True)

[0060] return pretreated_water

[0061] like Figure 2 As shown, Figure 2The pretreatment flow chart of the integrated sewage treatment method of the present invention in one embodiment is shown. In one embodiment, the sewage to be treated first enters the grille of the pretreatment system 21, which is composed of a group of parallel metal bars to intercept and remove larger solid materials, such as branches, paper, plastic bags, etc. The grille can prevent these coarse suspended matter from clogging the water pump and pipes, ensuring the normal operation of the subsequent treatment facilities. The water treated by the grille is further passed through the screen to intercept smaller solid particles, such as small fish, shrimps and organic debris. The aperture of the screen can be adjusted according to actual needs to achieve filtering effects of different precisions. The water treated by the grille and screen enters the preliminary sedimentation tank, where it continues to remove finer suspended particles and some colloidal substances by gravity. This step also has a certain effect on removing organic matter, fiber and certain microorganisms in sewage. The design of the sedimentation tank is divided into many types, including horizontal flow, vertical flow and radial flow. Each type has its own unique design and application scenario. For example, the horizontal flow sedimentation tank is suitable for large sewage treatment plants, while the vertical flow sedimentation tank is often used in small spaces. In addition, water treated by grilles and screens can also enter the grit chamber for treatment, where the principle of gravity sedimentation is used to make the denser inorganic particles (such as sand, gravel, etc.) in the sewage settle to the bottom of the tank. The grit chamber is usually designed with a slow water flow rate to promote the sedimentation effect. In order to improve the sedimentation efficiency, the pretreatment system is also equipped with a sand and water separator to further remove fine sand and particulate matter. These devices help protect the pumps and valves in the subsequent treatment links from wear.

[0062] In summary, sewage pretreatment is a crucial step in the sewage treatment process. It effectively removes large particles and suspended solids in sewage through physical and chemical methods, providing good water quality conditions for subsequent biochemical treatment and other deep treatments. Each step of pretreatment cannot be ignored and needs to be optimized according to the specific characteristics of sewage.

[0063] Step S13: transport the pretreated sewage to the biofilm reactor and start biofilm treatment.

[0064] The biofilm reactor includes an anaerobic reactor, an aerobic reactor and a biofilm pool. The pretreated sewage needs to be evenly distributed into the biofilm reactor to ensure that the wastewater is in full contact with the biofilm. The biofilm treatment includes the following steps:

[0065] Adjusting the control parameters of the biofilm reactor to preset values ​​based on the treatment objectives and basic characteristics of the sewage to be treated;

[0066] Preliminarily removing organic pollutants from the wastewater to be treated under anaerobic conditions based on the anaerobic reactor;

[0067] Based on the aerobic reactor, the wastewater to be treated is subjected to secondary removal of organic pollutants under oxygen-rich conditions;

[0068] The wastewater to be treated is subjected to biofilm adsorption and organic matter degradation based on the biofilm pool.

[0069] In one embodiment, the biofilm reactor degrades organic pollutants in sewage through microbial biofilms. The code of the biofilm reactor is as follows:

[0070]

[0071] water.quality['organic']-=0.7*water.quality['organic']

[0072] return water

[0073] Specifically, the process of transporting the pretreated sewage to the biofilm reactor for biofilm treatment includes the preparation phase, the startup phase, the operation phase and the monitoring phase. The specific steps are as follows:

[0074] S131, preparation stage.

[0075] Before starting the biofilm treatment, it is necessary to cultivate and form the biofilm on the filler or carrier. This process is called biofilm formation and involves inoculating microorganisms and providing appropriate growth conditions (such as temperature, pH, dissolved oxygen, etc.). Before starting, adjust various control parameters to preset values, including temperature, pH, dissolved oxygen concentration, etc. These parameters are crucial to the growth of biofilm and the degradation efficiency of organic matter.

[0076] S132, startup phase.

[0077] Start the treatment unit and allow the sewage to circulate in the device. This step is to ensure that the sewage can fully contact the biofilm, thereby improving the treatment efficiency. During the startup phase, it is necessary to closely observe and record the operation of each treatment unit, including changes in indicators such as temperature, pH value, dissolved oxygen concentration, and sludge concentration. These data are crucial for subsequent optimization operations.

[0078] S133, operation phase.

[0079] Sewage circulates in the biofilm reactor, and organic matter in the sewage is removed through the adsorption and degradation of the biofilm. At the same time, samples are taken from each treatment unit regularly to analyze indicators such as the organic content, nitrogen and phosphorus concentrations in the water samples to evaluate the treatment effect. Analyze indicators such as the organic content, nitrogen and phosphorus concentrations in the water samples to evaluate the treatment effect. According to the analysis results, the treatment process can be adjusted accordingly to improve treatment efficiency and water quality.

[0080] S134, monitoring phase.

[0081] During operation, the operation of each treatment unit is continuously monitored, and the operating parameters are adjusted as needed. For example, if it is found that a certain indicator does not achieve the expected treatment effect, the dissolved oxygen concentration or pH value can be adjusted to promote the growth of biofilm and the degradation of organic matter. For long-term operation of biofilm reactors, regular maintenance and optimization are necessary. This includes monitoring the activity of the biofilm, cleaning and replacement of membrane components, etc., to ensure the stability and efficiency of the system.

[0082] Among them, Figure 3 As shown, Figure 3 The flow chart of biofilm treatment in one embodiment of the integrated sewage treatment method of the present invention is shown. The anaerobic reactor 311 in the biofilm reactor 31 in step S133 is used to hydrolyze and acidify organic matter and produce biogas to preliminarily remove organic pollutants. In the anaerobic reactor 311, complex organic matter is hydrolyzed and acidified by anaerobic microorganisms into simple organic acids and alcohols. Through the action of methanogens, these organic acids and alcohols are further converted into biogas, the main components of which are methane and carbon dioxide. It is mainly used to treat high-concentration organic wastewater.

[0083] The aerobic reactor 312 in the biofilm reactor 31 is used for dissolving organic matter and converting ammonia nitrogen, and removing organic pollutants for the second time. In the aerobic reactor 312, aerobic microorganisms use oxygen dissolved in water to oxidize and decompose organic matter into carbon dioxide and water. At the same time, nitrifying bacteria in the aerobic reactor 312 convert ammonia nitrogen into nitrate nitrogen, thereby removing ammonia nitrogen. It is mainly used for treating relatively low-concentration organic wastewater.

[0084] The biofilm pool 313 in the biofilm reactor 31 is used for biofilm adsorption and organic matter degradation. In the biofilm pool, microorganisms form a biofilm on the surface of the filler, and further remove nutrients such as nitrogen and phosphorus in the sewage by adsorbing and degrading organic matter. The sewage is treated by microorganisms on the biofilm, which is suitable for treating various sewage concentrations.

[0085] These steps and reactor types together form an efficient wastewater treatment system that can effectively treat and purify wastewater to meet discharge or reuse standards.

[0086] Step S14, transporting the wastewater after biofilm treatment to the multi-stage membrane assembly and starting the multi-stage membrane treatment.

[0087] The multi-stage membrane assembly includes a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane. The sewage treated by the biofilm is transported to the multi-stage membrane assembly and the multi-stage membrane treatment is started, which includes the following steps:

[0088] Removing larger particles, suspended matter and some bacteria from the sewage through the microfiltration membrane;

[0089] Removing smaller particles, suspended matter and specific viruses from the sewage through the ultrafiltration membrane;

[0090] Removing small molecular organic matter and part of inorganic salts from the sewage through the nanofiltration membrane;

[0091] The organic pollutants and inorganic ions of the sewage are removed by the reverse osmosis membrane.

[0092] Specifically, multi-stage membrane treatment is a highly efficient wastewater deep treatment technology that gradually removes pollutants from wastewater through membrane components with different pore sizes.

[0093] In one embodiment, the multi-stage membrane assembly includes microfiltration, ultrafiltration, nanofiltration and reverse osmosis membranes to remove pollutants in stages. The code is as follows:

[0094] Python

[0095] class MultiStageMembrane:

[0096] def__init__(self, stages):

[0097] self.stages = stages

[0098] def filter(self,water):

[0099] for stage in self.stages:

[0100] water = stage.process(water)

[0101] return water

[0102] class MembraneStage:

[0103] def__init__(self,name,removal_efficiency):

[0104] self.name = name

[0105]

[0106] The main function of microfiltration membrane is pretreatment protection: as the first stage of the multi-stage membrane treatment system, it removes larger suspended matter, bacteria and some viruses in the water, and protects the subsequent more delicate membrane components from contamination and damage. The pore size of the microfiltration membrane is generally 0.1 to 10 microns. Its operating conditions are relatively loose and maintenance is simple, which can effectively improve the stable operation time of the overall system.

[0107] Ultrafiltration membranes achieve finer particle filtration and organic matter removal: their pore sizes are usually in the range of 0.01 to 0.1 microns, which can remove smaller suspended matter, macromolecular organic matter and almost all bacteria and viruses, further improving water quality. Ultrafiltration can not only remove suspended matter and microorganisms, but also partially remove large molecular weight soluble organic matter in water, such as proteins and polysaccharides, reducing the burden on subsequent nanofiltration and reverse osmosis processes.

[0108] Nanofiltration membranes are used for softening, decolorization and selective separation: their pore size is between 0.001 and 0.01 microns. They can not only further remove smaller organic matter and some inorganic matter, but are also particularly effective in water softening (removing calcium and magnesium ions) and decolorization. Nanofiltration membranes have a certain degree of ion selectivity and can remove certain heavy metal ions and some salts to a certain extent, but their main function is to remove organic matter and soften water.

[0109] Reverse osmosis membranes are used for high-level purification and final polishing: they can remove almost all dissolved solids, including most inorganic salts and organic matter. With a pore size of less than 0.0001 micron, they can produce nearly pure water. In a multi-stage membrane treatment system, reverse osmosis is often used as the last step to ensure that the quality of the effluent reaches the highest standards, especially when it is required to be reused or discharged to sensitive water bodies.

[0110] like Figure 4 As shown, Figure 4 The multi-stage membrane treatment flow chart of the integrated sewage treatment method of the present invention in one embodiment is shown. The sewage first passes through the microfiltration membrane assembly 411 in the multi-stage membrane assembly 41. The microfiltration membrane has a larger pore size (usually between 0.1 and 10 microns) and can remove larger particles, suspended solids and some microorganisms. The effluent after microfiltration enters the ultrafiltration membrane assembly 412. The pore size of the ultrafiltration membrane is smaller (usually between 0.01 and 0.1 microns), which can further remove smaller particles, most bacteria and some viruses. The effluent after ultrafiltration enters the nanofiltration membrane assembly 413. The pore size of the nanofiltration membrane is smaller (about 1 nanometer), which can remove soluble organic matter, some divalent ions and some monovalent ions, but cannot completely remove the salt in the water. The effluent after nanofiltration finally passes through the reverse osmosis membrane assembly 414. The reverse osmosis membrane has a very small pore size (about 0.1 nanometer) and can remove almost all soluble solids, including most ions, organic matter and microorganisms, thereby obtaining high-quality water.

[0111] Through this multi-stage membrane treatment process, wastewater can be effectively converted into water quality that can be reused or discharged, while reducing pollution to the environment. The selection and configuration of each membrane component depends on the specific wastewater characteristics and treatment goals.

[0112] Step S15, post-treating the sewage after multi-stage membrane treatment.

[0113] The post-treatment of wastewater after multi-stage membrane treatment includes the following steps:

[0114] The wastewater treated by the multi-stage membrane is subjected to pH adjustment and sterilization to ensure that the wastewater meets the discharge standard or reuse standard.

[0115] like Figure 5 As shown, Figure 5 The figure shows a post-processing flow chart of the integrated sewage treatment method of the present invention in one embodiment. The sewage treated by multi-stage membranes usually needs to adjust the pH value to meet the discharge standard or the needs of subsequent treatment, that is, the sewage treated by multi-stage membranes enters the post-processing module 51 again. The pH adjustment tank 511 adjusts the pH of the water by adding acid or alkali. Commonly used alkaline regulators include sodium hydroxide and lime, and acid regulators include sulfuric acid and hydrochloric acid. The pH value has an important influence on the activity of microorganisms. By adjusting the pH value, the metabolism of microorganisms and the degradation efficiency of organic matter can be optimized. This is crucial for subsequent biological treatment or natural discharge. The sewage after pH adjustment is then sterilized and disinfected. In the disinfection tank 512, chlorine, ultraviolet rays or ozone are usually used to disinfect the water to remove bacteria, viruses and other microorganisms therein. This step ensures that the treated water quality meets the hygiene and safety standards. The disinfection process also helps to prevent secondary pollution and prevent harmful microorganisms in sewage from entering the natural environment and causing damage to the ecosystem.

[0116] In one embodiment, the post-processing module is used to further purify the water, such as adjusting the pH value or adding disinfectants. The code is as follows:

[0117] Python

[0118] def post_treatment(filtered_water):

[0119] #Assume post-processing

[0120] clean_water=filtered_water.adjust_ph(target_ph=7.0)

[0121] return clean_water

[0122] final_water=post_treatment(membrane_filtered_water)

[0123] By adjusting the pH and disinfecting the wastewater after multi-stage membrane treatment, it can be ensured that the water quality meets the discharge standards while protecting the environment and public health safety.

[0124] In one embodiment, urban sewage mainly comes from households and municipal facilities, including domestic sewage and rainwater runoff. This sewage usually contains a large amount of organic matter, suspended matter, nutrients such as nitrogen and phosphorus. First, urban sewage is collected and pretreated. The collection system is designed to handle both normal flow and peak flow during heavy rain. Pretreatment includes coarse grids to remove large floating objects, fine grids to further remove smaller substances, grit chambers to remove sand and other heavier particles, and preliminary sedimentation tanks to remove some organic and inorganic suspended matter. Secondly, urban sewage is treated with biofilms. Biofilm carriers are filled in sequential intermittent reactors, and aerobic and anaerobic periods are optimized by adjusting the aeration amount to effectively remove organic matter and achieve nitrification and denitrification. The biofilm pool uses fixed biofilms for deep treatment, which is particularly suitable for the removal of nitrogen and phosphorus. Again, the water treated with biofilms is subjected to multi-stage membrane treatment. Microfiltration and ultrafiltration are mainly used to further remove residual suspended matter and microorganisms. Nanofiltration is used to soften water quality and remove heavy metals and some salts. Reverse osmosis is the final step to ensure that the effluent meets the standards for recycled water and can be used for urban greening or industrial recycling. Finally, the wastewater treated by multi-stage membranes is post-treated. First, pH adjustment is performed to ensure that the water quality meets the discharge standards, generally adjusted to near neutral. Ultraviolet disinfection is then used to avoid secondary contamination by chemical disinfectants, so that the treated water can be safely discharged or reused.

[0125] In one embodiment, industrial wastewater varies from industry to industry and may contain heavy metals, organic solvents, high concentrations of organic matter, etc. First, industrial wastewater is collected and pretreated specifically. The pretreatment method is adjusted according to the characteristics of the wastewater, such as acidic wastewater needs to be neutralized and oil-containing wastewater needs to be separated from oil. For wastewater containing heavy metals, pretreatment requires the use of specific chemical reactions to generate precipitation to remove these metals. Secondly, industrial wastewater is subjected to targeted biological treatment. For high-concentration organic wastewater, anaerobic digestion can effectively degrade organic matter under anaerobic conditions, while producing biogas as energy recovery. Aerobic treatment uses activated sludge or biofilm reactors to adjust the microbial community and treatment time according to the type and concentration of pollutants in the wastewater. Thirdly, industrial wastewater is subjected to deep membrane treatment. Ultrafiltration and nanofiltration can be adjusted for specific industrial pollutants, such as removing pigments, sterilizing or further removing specific organic matter. Reverse osmosis is usually used for final water polishing to ensure that the effluent can meet industrial water standards or emission standards. Finally, industrial wastewater is subjected to comprehensive post-treatment. This includes pH adjustment, water softening, and final disinfection to ensure that the water quality meets the requirements for specific industrial uses or is safe for discharge.

[0126] The protection scope of the integrated sewage treatment method described in the embodiment of the present invention is not limited to the execution order of the steps listed in this embodiment. All solutions implemented by adding, reducing or replacing steps in the prior art based on the principles of the present invention are included in the protection scope of the present invention.

[0127] An embodiment of the present invention also provides an integrated sewage treatment system, which can implement the integrated sewage treatment method described in the present invention. However, the implementation device of the integrated sewage treatment system described in the present invention includes but is not limited to the structure of the integrated sewage treatment system listed in this embodiment. All structural deformations and replacements of the prior art made according to the principles of the present invention are included in the protection scope of the present invention.

[0128] like Figure 6 As shown, in one embodiment, the integrated sewage treatment system of the present invention includes a collection module 61 , a pretreatment module 62 , a biofilm treatment module 63 , a multi-stage membrane treatment module 64 and a post-treatment module 65 .

[0129] The collection module 61 is used to collect sewage to be treated;

[0130] The pre-treatment module 62 is connected to the collection module 61 and is used to pre-treat the wastewater to be treated;

[0131] The biofilm treatment module 63 is connected to the pretreatment module 62 and is used to transport the pretreated sewage to the biofilm reactor and start the biofilm treatment;

[0132] The multi-stage membrane treatment module 64 is connected to the biofilm treatment module 63 and is used to transport the wastewater after biofilm treatment to the multi-stage membrane assembly and start the multi-stage membrane treatment;

[0133] The post-processing module 65 is connected to the multi-stage membrane processing module 64 and is used for post-processing the sewage after the multi-stage membrane treatment.

[0134] In the several embodiments provided by the present invention, it should be understood that the disclosed system, device or method can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules / units is only a logical function division, and there may be other division methods in actual implementation, such as multiple modules or units can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules or units, which can be electrical, mechanical or other forms.

[0135] The modules / units described as separate components may or may not be physically separated, and the components displayed as modules / units may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules / units may be selected according to actual needs to achieve the purpose of the embodiments of the present invention. For example, the functional modules / units in the various embodiments of the present invention may be integrated into one processing module, or each module / unit may exist physically separately, or two or more modules / units may be integrated into one module / unit.

[0136] Those of ordinary skill in the art should further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0137] The embodiment of the present invention also provides a computer-readable storage medium. A person of ordinary skill in the art can understand that all or part of the steps in the method for implementing the above embodiment can be completed by instructing the processor through a program, and the program can be stored in a computer-readable storage medium, and the storage medium is a non-transitory medium, such as a random access memory, a read-only memory, a flash memory, a hard disk, a solid-state hard disk, a magnetic tape, a floppy disk, an optical disc, and any combination thereof. The above storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more available media. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a digital video disc (DVD)), or a semiconductor medium (e.g., a solid-state disk (SSD)), etc.

[0138] An embodiment of the present invention further provides an electronic device, which includes a processor and a memory.

[0139] The memory is used to store computer programs.

[0140] The memory includes: ROM, RAM, disk, USB flash drive, memory card or CD and other media that can store program codes.

[0141] The processor is connected to the memory and is used to execute the computer program stored in the memory so that the electronic device executes the above-mentioned integrated sewage treatment method.

[0142] Preferably, the processor can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.

[0143] like Figure 7As shown, the electronic device of the present invention is in the form of a general computing device. The components of the electronic device may include but are not limited to: one or more processors or processing units 71, a memory 72, and a bus 73 connecting different system components (including the memory 72 and the processing unit 71).

[0144] Bus 73 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus architectures. By way of example, these architectures include, but are not limited to, an Industry Standard Architecture (ISA) bus, a Micro Channel Architecture (MAC) bus, an Enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

[0145] Electronic devices typically include a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device, including volatile and non-volatile media, removable and non-removable media.

[0146] The memory 72 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 721 and / or cache memory 722. The electronic device may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, the storage system 723 may be used to read and write non-removable, non-volatile magnetic media ( Figure 7 not shown, usually called a "hard drive"). Although Figure 7 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 73 via one or more data medium interfaces. The memory 72 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of the various embodiments of the present invention.

[0147] A program / utility 724 having a set (at least one) of program modules 7241 may be stored, for example, in the memory 72, such program modules 7241 including but not limited to an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. The program modules 7241 generally perform the functions and / or methods of the embodiments described herein.

[0148] The electronic device may also communicate with one or more external devices (e.g., keyboards, pointing devices, displays, etc.), one or more devices that enable a user to interact with the electronic device, and / or any device that enables the electronic device to communicate with one or more other computing devices (e.g., network cards, modems, etc.). Such communication may be performed via input / output (I / O) interface 74. Furthermore, the electronic device may also communicate with one or more networks (e.g., local area networks (LANs), wide area networks (WANs), and / or public networks, such as the Internet) via network adapter 75. Figure 7 As shown, the network adapter 75 communicates with other modules of the electronic device via the bus 73. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0149] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An integrated sewage treatment method, characterized in that: The method comprises the following steps: Collecting sewage for treatment; Pre-treating the sewage to be treated; conveying the pretreated sewage to the biofilm reactor and starting the biofilm treatment; The wastewater treated by the biofilm is transported to the multi-stage membrane module and the multi-stage membrane treatment is started; The wastewater after multi-stage membrane treatment is post-treated.

2. The integrated sewage treatment method according to claim 1, characterized in that: The pretreatment of the wastewater to be treated includes grille treatment, screen treatment, grit chamber treatment, and sedimentation tank treatment.

3. The integrated sewage treatment method according to claim 1, characterized in that: The biofilm reactor comprises an anaerobic reactor, an aerobic reactor and a biofilm pool.

4. The integrated sewage treatment method according to claim 3, characterized in that: The process of transferring the pretreated wastewater to the biofilm reactor and starting the biofilm treatment includes the following steps: Adjusting the control parameters of the biofilm reactor to preset values ​​based on the treatment objectives and basic characteristics of the sewage to be treated; Preliminarily removing organic pollutants from the wastewater to be treated under anaerobic conditions based on the anaerobic reactor; Based on the aerobic reactor, the wastewater to be treated is subjected to secondary removal of organic pollutants under oxygen-rich conditions; The wastewater to be treated is subjected to biofilm adsorption and organic matter degradation based on the biofilm pool.

5. The integrated sewage treatment method according to claim 1, characterized in that: The multi-stage membrane assembly includes a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane and a reverse osmosis membrane.

6. The integrated sewage treatment method according to claim 5, characterized in that: The following steps are included to transport the wastewater after biofilm treatment to the multi-stage membrane module and start the multi-stage membrane treatment: Removing larger particles, suspended matter and some bacteria from the sewage through the microfiltration membrane; Removing smaller particles, suspended matter and specific viruses from the sewage through the ultrafiltration membrane; Removing small molecular organic matter and part of inorganic salts from the sewage through the nanofiltration membrane; The organic pollutants and inorganic ions of the sewage are removed by the reverse osmosis membrane.

7. The integrated sewage treatment method according to claim 1, characterized in that: The post-treatment of wastewater after multi-stage membrane treatment includes the following steps: The wastewater treated by the multi-stage membrane is subjected to pH adjustment and sterilization to ensure that the wastewater meets the discharge standard or reuse standard.

8. An integrated sewage treatment system, characterized in that: The system includes a collection module, a pretreatment module, a biofilm treatment module, a multi-stage membrane treatment module and a post-treatment module; The collection module is used to collect sewage to be treated; The pretreatment module is used to pretreat the sewage to be treated; The biofilm treatment module is used to transport the pretreated sewage to the biofilm reactor and start the biofilm treatment; The multi-stage membrane treatment module is used to transport the sewage after biofilm treatment to the multi-stage membrane assembly and start the multi-stage membrane treatment; The post-processing module is used to post-process the sewage after multi-stage membrane treatment.

9. An electronic device, characterized in that: The electronic device comprises: a processor and a memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory so that the electronic device performs the integrated sewage treatment method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by an electronic device, the integrated sewage treatment method according to any one of claims 1 to 7 is implemented.

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