CN110170501B

CN110170501B - Integrated treatment system of domestic waste

Info

Publication number: CN110170501B
Application number: CN201910363909.6A
Authority: CN
Inventors: 陶文亮; 王琬; 李龙江
Original assignee: Guizhou Minzu University
Current assignee: Guizhou Minzu University
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-11-06
Anticipated expiration: 2039-04-30
Also published as: CN110170501A; WO2020220411A1

Abstract

The invention discloses an integrated processing system, comprising: the mixing and separating device is suitable for pretreating the household garbage and mixing the household garbage with the ingredients to form a mixture, and then separating the mixture into waste liquid and waste residue; a waste liquid treatment system, communicated with the mixing and separating device, and suitable for treating the waste liquid; and the waste residue treatment system is communicated with the mixing and separating device and is suitable for treating the waste residue. The integrated treatment system integrates the waste liquid treatment system and the waste residue treatment system, and can be used for centralized comprehensive treatment of various biochemical wastes in rural environments.

Description

Integrated treatment system of domestic waste

Technical Field

The invention relates to the technical field of household garbage treatment, in particular to an integrated treatment system.

Background

Along with the urban construction and the development of national economy of China, more and more garbage and sewage are discharged in the life of urban and rural residents, and the living environment of the residents is seriously influenced. At present, most of the methods for treating garbage and sewage discharged by urban and rural residents are separated, wherein solid garbage is usually collected, transported and concentrated into a garbage landfill or is directly burnt; for liquid garbage (sewage), a sewage collecting and collecting pipe network system is built, and the sewage is drained to a sewage treatment plant for treatment. For the treatment method, both the transportation of solid garbage and the construction of sewage treatment plants need to spend a great deal of manpower and huge amount of funds.

In addition, for rural living environment, due to the fact that some rural areas in China are in various mountainous regions and peasant households are scattered, the scattered discharge of various solid wastes such as kitchen wastes, human (livestock) excrement, biomass and domestic sewage is inevitable. Influenced by rural environment and geographic factors, the collection and transportation of solid garbage and the construction of sewage treatment plants are difficult to realize. Moreover, the separate treatment of solid waste and sewage is itself a relatively complex process. If the rural domestic garbage can not be treated in a centralized manner, not only can the rural living environment be affected, but also pathogenic bacteria are easily bred in organic matters in the garbage, and certain influence is inevitably caused on the health of local people.

Disclosure of Invention

To this end, the present invention provides an integrated processing system to solve or at least mitigate the above-identified problems.

According to an aspect of the present invention, there is provided an integrated processing system comprising: the mixing and separating device is suitable for pretreating the household garbage and mixing the household garbage with the ingredients to form a mixture, and then separating the mixture into waste liquid and waste residue; a waste liquid treatment system, communicated with the mixing and separating device, and suitable for treating the waste liquid; and the waste residue treatment system is communicated with the mixing and separating device and is suitable for treating the waste residue.

Optionally, in the integrated treatment system according to the present invention, the waste liquid after being split includes a first stream and a second stream, and the waste liquid treatment system includes: a first treatment unit in communication with the mixing and separating device and adapted to treat the first stream; and the regulating tank is respectively communicated with the mixing and separating device and the first treatment unit and is suitable for regulating the second flow and then guiding the second flow into the first treatment unit for treatment.

Optionally, in the integrated processing system according to the present invention, the waste residue processing system comprises a waste residue processing unit, the waste residue processing unit comprising: the first biochemical reactor is communicated with the mixing and separating device and is suitable for introducing the waste residues and carrying out biochemical reaction treatment on the waste residues so as to obtain a mixture of waste gas and residue liquid; the second biochemical reactor is communicated with the first biochemical reactor, is suitable for leading in the waste gas in the first biochemical reactor and is suitable for purifying the waste gas; and the slag-liquid separation device is communicated with the first biochemical reactor, is suitable for introducing the slag-liquid mixture in the first biochemical reactor and is suitable for carrying out slag-liquid separation on the slag-liquid mixture.

Optionally, in the integrated processing system according to the present invention, the slag processing unit further includes: and the slag-liquid lifting device is respectively communicated with the first biochemical reactor and the slag-liquid separating device, and is suitable for lifting the slag-liquid mixture in the first biochemical reactor and then guiding the slag-liquid mixture into the slag-liquid separating device.

Optionally, in the integrated processing system according to the present invention, the slag processing unit further includes: and the collecting device is communicated with the residue-liquid separating device and is suitable for introducing the solid residues separated by the residue-liquid separating device.

Optionally, in the integrated processing system according to the present invention, the waste residue processing system includes at least two waste residue processing units, and each waste residue processing unit is provided with a control valve; the control valves of the at least two waste residue processing units are adapted to be opened and closed alternately, so that the waste residues in the mixing and separating device are led into the at least two processing units alternately for processing in a time-sharing manner.

Alternatively, in the integrated processing system according to the present invention, the first biochemical reactor and the mixing and separating device are communicated through a connecting pipe, and the control valve is disposed on the connecting pipe.

Optionally, in the integrated processing system according to the present invention, the pretreatment includes microwave treatment, ultrasonic treatment, pulverization treatment, cavitation treatment, micronization treatment, chemical treatment, grinding treatment.

Optionally, in the integrated treatment system according to the invention, the conditioning tank is adapted to adjust the oil cut and/or the PH of the second stream.

Optionally, in the integrated processing system according to the present invention, the first processing unit includes: the reservoir is respectively communicated with the mixing and separating device and the regulating reservoir and is suitable for treating the first stream and the second stream regulated by the regulating reservoir to obtain mixed liquid, and the reservoir is also suitable for adding organic matters; a first biofilm aeration tank in communication with the reservoir for treating the mixed liquor; the second biological film aeration tank is communicated with the first biological film aeration tank so as to treat the mixed liquid treated by the first biological film aeration tank; and the sedimentation tank is communicated with the second biological film aeration tank so as to treat the mixed liquid treated by the second biological film aeration tank.

Optionally, in the integrated treatment system according to the invention, the organic matter comprises a flocculant and/or a biocide.

Optionally, in the integrated treatment system, the aeration rate of the first biological membrane aeration tank is 2-6L/min; and the aeration rate of the second biological film aeration tank is 2-4L/min.

According to the technical scheme, the invention provides an integrated treatment system which comprises a mixing and separating device, a waste liquid treatment system and a waste residue treatment system. The household garbage is conveyed to the mixing and separating device to be pretreated and separated into waste liquid and waste residues, and then the waste liquid and the waste residues are guided into the waste liquid treatment system and the waste residue treatment system in a shunting manner to be treated. The waste residue treatment system comprises at least two waste residue treatment units, and waste residues in the mixing and separating device are led into the at least two waste residue treatment units for treatment in a time-sharing and alternate mode through alternate opening and closing of the control valves. Therefore, the waste residue treatment system can store and treat waste residues at different time intervals, the treatment efficiency of the waste residues can be improved, the treatment capacity is increased, the hydraulic retention time in the waste residue treatment unit can be ensured, the stable growth of floras is ensured, and the stability of the integrated treatment system in the waste treatment process is maintained. The integrated treatment system integrates the waste liquid treatment system and the waste residue treatment system, can be used for comprehensively treating various biochemical wastes in rural environments in a centralized manner, has a stable treatment process, and can meet the requirements of reutilization of solid residues and waste gas and standard emission of water quality.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

To the accomplishment of the foregoing and related ends, certain illustrative aspects are described herein in connection with the following description and the annexed drawings, which are indicative of various ways in which the principles disclosed herein may be practiced, and all aspects and equivalents thereof are intended to be within the scope of the claimed subject matter. The above and other objects, features and advantages of the present disclosure will become more apparent from the following detailed description read in conjunction with the accompanying drawings. Throughout this disclosure, like reference numerals generally refer to like parts or elements.

FIG. 1 shows a schematic diagram of an integrated processing system according to one embodiment of the invention.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As mentioned above, the garbage disposal apparatus in the rural environment in the prior art has a certain functional defect more or less during the use process, so the present invention provides an integrated processing system 300 with more optimized performance. FIG. 1 shows a schematic diagram of an integrated processing system 300 of the present invention.

As shown in fig. 1, the integrated processing system 300 includes a mixing and separating device 310, a waste treatment system 100, and a waste treatment system 200. The waste liquid treatment system 100 and the waste residue treatment system 200 are respectively communicated with the mixing and separating device 310 through pipelines.

The domestic garbage discharged from the rural environment includes domestic sewage, kitchen waste, human (livestock) excrement, biomass, etc., and the domestic garbage can be conveyed to the mixing and separating device 310 for pretreatment.

Specifically, the pretreatment of the domestic waste by the mixing and separating device 310 includes, but is not limited to, microwave treatment, ultrasonic treatment, pulverization treatment, cavitation treatment, micronization treatment, chemical treatment, or grinding treatment. The chemical treatment is to add a reactant to react the household garbage with the reactant, such as enzyme treatment. The skilled person can set a suitable pretreatment method according to the characteristics of the domestic garbage, and the invention does not limit the specific treatment items included in the pretreatment method. For example, the biomass particles may be subjected to a pretreatment method such as pulverization treatment, grinding treatment, or enzyme treatment, but not limited thereto.

Further, the mixing and separating device 310 is suitable for adding ingredients, including but not limited to raw materials, inocula, strains, and reagents such as enzymes. In this way, in the mixing and separating device 310, the pretreated and pulverized household garbage and the ingredients are stirred and mixed to form a mixture. The mixing and separating device 310 is further adapted to separate the mixture into waste residues and waste liquids, and to perform split post-treatment of the waste residues and waste liquids, respectively.

It should be noted that, in the above embodiment, the pretreatment and the ingredient mixing process are performed sequentially, that is, the mixing and separating device 310 pretreats the household garbage first, and then mixes the pretreated household garbage with the ingredient to form a mixture. Those skilled in the art will appreciate that in other embodiments, the pre-treatment and ingredient mixing processes may be performed simultaneously, or the ingredients may be mixed prior to the pre-treatment. The order of the pretreatment and the blending of the ingredients can be set by those skilled in the art according to actual needs, and the present invention is not limited thereto.

The mixture separation device 310 separates the mixture into waste liquid and waste slag. Wherein, the waste liquid after being shunted can be led into the waste liquid treatment system 100 for purification treatment. The waste residue may be diverted and directed to the waste residue treatment system 200 for purification.

According to one embodiment, the waste stream is split into a first stream, a second stream. As shown in fig. 1, the waste liquid treatment system 100 includes a first treatment unit 110 and a regulating reservoir 120, the first treatment unit 110 and the regulating reservoir 120 are respectively connected to a mixing and separating device 310, and the regulating reservoir 120 is further connected to the first treatment unit 110. It should be noted that the adjusting tank 120 is used for adjusting the oil content and/or the PH of the waste liquid, or for transferring the waste liquid.

Optionally, the reservoir 120 includes an oil-water separator (not shown), and the waste liquid is subjected to oil separation treatment by the oil-water separator. The oil-water separator can utilize the difference of specific gravity between suspended matter in waste liquid and water to separate oil from water.

According to an embodiment, the first stream after splitting the waste liquid is a clear stream, and can be directly introduced into the first treatment unit 110 without being adjusted, and the first stream is directly purified by the first treatment unit 110. The second stream is an oil, peracid or overbase containing liquid that needs to be conditioned. Thus, the second stream is suitable for being introduced into the adjustment tank 120, and the oil content and/or the PH of the second stream is adjusted by the adjustment tank 120, and then the adjusted second stream is introduced into the first treatment unit 110 for purification treatment.

In addition, when the waste liquid is too much, the waste liquid can be split into a first stream and a second stream by the mixing and separating device 310, and both the first stream and the second stream are clear streams. The first flow is directly introduced into the first processing unit 110 for processing, and the second flow is introduced into the adjusting tank 120 for transferring and then introduced into the first processing unit 110 for processing. In this way, the adjusting tank 120 plays a role of relay, and avoids the influence of too much waste liquid in the first treatment unit 110 on the purification effect.

According to one embodiment, as shown in fig. 1, the first treatment unit 110 includes a water reservoir 111, a first biofilm aeration tank 112, a second biofilm aeration tank 113, and a sedimentation tank 114, which are sequentially connected.

The reservoir 111 is respectively communicated with the mixing and separating device 310 and the regulating reservoir 120, so that the first stream obtained by splitting the waste liquid by the mixing and separating device 310 can be directly introduced into the reservoir 111 for treatment, and the second stream is firstly regulated or transferred by the regulating reservoir and then introduced into the reservoir 111 for treatment. According to one embodiment, organic substances may be added to the reservoir 111 according to the water quality in the reservoir 111, so as to precipitate and sterilize the liquid in the reservoir 111. The first stream and the second stream are treated by a reservoir 111 to obtain a mixed liquid. Optionally, the organic substance includes a flocculant and/or a biocide, and the flocculant may be, but is not limited to, polyacrylamide.

Further, the first biofilm aeration tank 112 is communicated with the water reservoir 111, and the mixed liquid treated by the water reservoir 111 is continuously introduced into the first biofilm aeration tank 112 for treatment. The second biological film aeration tank 113 is communicated with the first biological film aeration tank 112, and the mixed liquid treated by the first biological film aeration tank 112 is continuously led into the second biological film aeration tank 113 for treatment. The sedimentation tank 114 is communicated with the second biofilm aeration tank 113, and the mixed liquid treated by the second biofilm aeration tank 113 is continuously led into the sedimentation tank 114 for sedimentation treatment. Here, the water quality after the sedimentation in the sedimentation tank 114 meets the secondary standard of Integrated discharge Standard for municipal wastewater (GB18918-2002), so that the standard discharge can be achieved.

The first and second

biofilm aeration tanks

112 and 113 are used for sewage treatment by an activated sludge process, and a certain sewage retention time is provided in the tanks to satisfy the amount of oxygen required by aerobic microorganisms and the mixing conditions under which sewage is sufficiently contacted with activated sludge, so that the microorganisms decompose organic matter in the mixed liquid to purify the mixed liquid. Wherein, the Hydraulic Retention Time (HRT) of the first biomembrane aeration tank 112 and the second biomembrane aeration tank 113 is 25-40 h, and the sludge is ensured to be removed once per week. Thus, the mixed liquid treated by the reservoir 111 sequentially passes through the first and second

biofilm aeration tanks

112 and 113 for biochemical reaction, and organic matters in the mixed liquid are gradually decomposed by microbial metabolism, thereby realizing the purification treatment of the mixed liquid.

According to one embodiment, the first and second

biofilm aeration tanks

112 and 113 are respectively provided with aeration heads, and the aeration heads are suitable for dissolving oxygen in air into water to generate dissolved oxygen, so as to maintain a certain dissolved oxygen concentration in the water, thereby providing oxygen for the microorganisms to metabolize (oxidize) and decompose the organic matters, so that the microorganisms can more fully degrade the organic matters in the mixed liquid.

Optionally, the aeration rate of the aeration head in the first biofilm aeration tank 112 is 2-6L/min; the aeration rate of the aeration head in the second biomembrane aeration tank 113 is 2-4L/min. Here, the present invention is not particularly limited to the aeration amount in the two biofilm aeration tanks, and those skilled in the art can set it as the case may be.

In addition, the first and second

biofilm aeration tanks

112 and 113 have an automatic temperature control function, and provide stable and favorable reaction temperature for the microorganisms to decompose organic matters by reasonably controlling the temperature in the biofilm aeration tanks, so that the mixed liquid is more stably and sufficiently purified. Optionally, the temperature of the first and second

biofilm aeration tanks

112 and 113 is controlled between 10 and 35 ℃.

According to one embodiment, as shown in fig. 1, the waste residue processing system 200 comprises a plurality of waste residue processing units 250 suitable for processing waste residues, wherein the waste residue processing units 250 comprise a first biochemical reactor 251, a second biochemical reactor 252, a slag liquid lifting device 253 and a slag liquid separating device 254. Wherein the first biochemical reactor 251 is communicated with the mixing and separating device 310; the first biochemical reactor 251 is divided into two paths, which are respectively communicated with the second biochemical reactor 252 and the slag liquid lifting device 253, and further, the slag liquid lifting device 253 is communicated with the slag liquid separating device 254. In other words, the first biochemical reactor 251 is in communication with the slag-liquid separating device 254 via the slag-liquid lifting device 253.

Further, the first biochemical reactor 251 and the mixing and separating device 310 are connected by the connection pipe 210, so that the waste slag separated by the mixing and separating device 310 can be introduced into the first biochemical reactor 251 through the connection pipe 210, and the biochemical reaction treatment is performed in the first biochemical reactor 251 to obtain a mixture of waste gas and slag liquid.

According to one embodiment, the waste gas generated in the first biochemical reactor 251 is adapted to be introduced into a second biochemical reactor 252 communicating with the first biochemical reactor 251, and the waste gas is subjected to further biochemical reaction treatment and purification treatment by the second biochemical reactor 252 so as to reuse the purified gas. The slag-liquid mixture produced in the first biochemical reactor 251 is adapted to be introduced into the slag-liquid separating device 254 and subjected to slag-liquid separation by the slag-liquid separating device 254.

Specifically, the slag liquid lifting device 253 is adapted to lift the slag liquid mixture generated in the first biochemical reactor 251 and then introduce the slag liquid mixture into the slag liquid separating device 254. In this way, on one hand, the slag-liquid mixture in the first biochemical reactor 251 is timely discharged, so that the first biochemical reactor 251 can continuously process the slag separated by the mixing and separating device 310. On the other hand, after the slag-liquid separation is performed on the slag-liquid mixture by the slag-liquid separation device 254, solid residue and wastewater meeting the discharge standard can be formed. Here, the contents of organic matter, potassium, sodium, calcium, nitrogen, and phosphorus in the solid residue separated by the residue-liquid separator 254 meet "mark requirements for agricultural microbial products" (NY 885-2004). The waste water separated by the slag-liquid separating device 254 meets the secondary standard of comprehensive discharge Standard for urban wastewater (GB18918-2002), so that the standard discharge can be achieved.

In addition, the waste residue processing unit 250 further comprises a collecting device 255 communicated with the slag-liquid separating device 254, and the solid residue separated by the slag-liquid separating device 254 is suitable to be guided into the collecting device 255 so as to recycle the solid residue.

According to one embodiment, the waste gas generated in the first biochemical reactor 251 includes methane, carbon dioxide, and other pollutant gases that are not up to standard for emission, such as H₂And S. The second biochemical reactor 252 can perform further biochemical reaction on the pollutant gas in the waste gas by introducing the waste gas generated in the first biochemical reactor 251 into the second biochemical reactor 252, so as to remove the pollutant gas; in addition, the second biochemical reactor 252 is also adapted to purify the exhaust gas by washing with water, drying, or the like, and the purified gas is mainly methane and can be reused.

Note that the biochemical reaction of the waste residue in the first biochemical reactor 251 includes:

4CH₃OH→3CH₄+CO₂+2H₂O

4CH₃-NH₂+2H₂O+4H+→3CH₄+CO₂+4NH₄ ⁺

2(CH₃)₂-S+2H₂O→3CH₄+CO₂+2H₂S

CH₃OH+H₂→CH₄+H₂O

2CH₃CH₂OH+CO₂→2CH₃COOH+CH₄

4H₂+CO₂→CH₄+2H₂O

CH₃COOH→CH₄+CO₂

2CH₃CH₂COOH+2H₂O+CO₂→4CH₃COOH+CH₄

according to one embodiment, the slag treatment system 200 includes at least two slag treatment units 250, and each slag treatment unit 250 is provided with a control valve 220, respectively, and the control valves 220 are disposed on the connection pipe 210.

In the specific operation process, the control valve 220 of each waste residue processing unit 250 is controlled to be opened and closed alternately, so that the connecting pipe 210 is controlled to be opened and closed, and waste residues in the mixing and separating device 310 are led into at least two waste residue processing units 250 to be processed in a time-sharing and alternating mode. It should be noted that, because the waste residue processing unit 250 has a long processing period of about 30-40 days, the waste residue processing system 200 can store and process waste residues in different periods by providing two or more waste residue processing units 250 to perform redundancy on waste residues. Therefore, the treatment efficiency of the waste residues can be improved, the treatment capacity is increased, the hydraulic retention time in the waste residue treatment unit 250 can be ensured, and the stable growth of the flora is ensured, so that the stability of the integrated treatment system 300 in the waste treatment process is maintained. Here, the present invention is not particularly limited to the specific number of the slag treatment units 250, and those skilled in the art can set them by themselves according to the garbage discharge situation of the local residents.

According to one embodiment, as shown in fig. 1, the waste residue treatment system 200 comprises two waste residue treatment units 250, and the waste residues in the mixing and separating device 310 are alternately introduced into the two waste residue treatment units 250 for treatment in a time-sharing manner by controlling the control valves 220 of the two waste residue treatment units 250 to be opened and closed alternately, so that the waste residues are stored and treated in a time-sharing manner.

Through the arrangement, various domestic wastes in rural environment are crushed and mixed by the mixing and separating device 310, and then are separated into waste residues and waste liquid, and are guided into the waste liquid treatment system 100 and the waste residue treatment system 200 in a shunting manner for treatment, so that the centralized comprehensive treatment of various domestic wastes in rural areas can be realized.

The following are specific examples:

it is known that a certain farmer produces domestic sewage of 1.5m per day³Table 1 shows that 5Kg of kitchen waste, 3Kg of human (livestock) excrement and 1Kg of straws are obtained by detecting the initial average value of each parameter in the water quality of the kitchen waste, the initial average value of each parameter in the water quality of the kitchen waste and the index value of each parameter of the discharged water quality after the kitchen waste is treated by the integrated treatment system. Here, the quality of the feed water is the quality of the water fed to the mixing and separating device 310.

TABLE 1

According to one embodiment, in the detection process of the discharged water quality, the chroma of the discharged water quality is detected by a dilution multiple method, and the chroma of the measured discharged water quality is 40. In the process of detecting the quality of the inlet water, the chromaticity of the inlet water is not required to be detected, and therefore, the chromaticity of the quality of the inlet water is not given in table 1.

It should be noted that index values (shown in table 1) of various parameters of the discharged water quality treated by the integrated treatment system of the invention can reach or exceed the requirements of the secondary standard of the secondary comprehensive discharge standard of urban sewage (GB 18918-2002).

In the description of the present specification, the terms "connected", "fixed", and the like are to be construed broadly unless otherwise explicitly specified or limited. Furthermore, the terms "upper", "lower", "inner", "outer", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Claims

1. An integrated processing system, comprising:

the mixing and separating device is suitable for pretreating the household garbage and mixing the household garbage with the ingredients to form a mixture, further separating the mixture into waste liquid and waste residues, and respectively shunting the waste liquid and the waste residues, wherein the waste liquid comprises a first stream and a second stream after shunting;

the waste liquid treatment system comprises a regulating tank and a first treatment unit which are respectively communicated with the mixing and separating device, the first flow strand is suitable for being led into the first treatment unit, and the second flow strand is suitable for being led into the regulating tank to be regulated and then led into the first treatment unit; the first treatment unit comprises a reservoir which is respectively communicated with the mixing and separating device and the regulating reservoir, and the reservoir comprises an oil-water separator which is suitable for carrying out oil separation treatment on the first stream and the second stream regulated by the regulating reservoir to obtain mixed liquid; and

and the waste residue treatment system is communicated with the mixing and separating device and is suitable for treating the waste residue, the waste residue treatment system comprises at least two waste residue treatment units, each waste residue treatment unit is respectively provided with a control valve, and the control valves of the at least two waste residue treatment units are suitable for being opened and closed alternately so that the waste residue in the mixing and separating device can be led into the at least two waste residue treatment units alternately in a time-sharing manner for treatment.

2. The integrated processing system of claim 1, wherein the slag handling unit comprises:

the first biochemical reactor is communicated with the mixing and separating device and is suitable for introducing the waste residues and carrying out biochemical reaction treatment on the waste residues so as to obtain a mixture of waste gas and residue liquid;

the second biochemical reactor is communicated with the first biochemical reactor, is suitable for leading in the waste gas in the first biochemical reactor and is suitable for purifying the waste gas; and

and the slag-liquid separation device is communicated with the first biochemical reactor, is suitable for introducing the slag-liquid mixture in the first biochemical reactor and is suitable for carrying out slag-liquid separation on the slag-liquid mixture.

3. The integrated processing system of claim 2, wherein the slag handling unit further comprises:

and the slag-liquid lifting device is respectively communicated with the first biochemical reactor and the slag-liquid separating device, and is suitable for lifting the slag-liquid mixture in the first biochemical reactor and then guiding the slag-liquid mixture into the slag-liquid separating device.

4. The integrated processing system of claim 2, wherein the slag handling unit further comprises:

and the collecting device is communicated with the residue-liquid separating device and is suitable for introducing the solid residues separated by the residue-liquid separating device.

5. The integrated processing system of claim 2, wherein:

the first biochemical reactor is communicated with the mixing and separating device through a connecting pipe, and the control valve is arranged on the connecting pipe.

6. The integrated processing system of any of claims 1-5, wherein:

the pretreatment comprises microwave treatment, ultrasonic treatment, crushing treatment, cavitation treatment, micronization treatment, chemical treatment and grinding treatment.

7. The integrated processing system of any of claims 1-5, wherein:

the conditioning tank is adapted to adjust the oil cut and/or the PH of the second stream.

8. The integrated processing system of any of claims 1-5, wherein the water reservoir is further adapted to add organic matter; the first processing unit further comprises:

a first biofilm aeration tank in communication with the reservoir for treating the mixed liquor;

the second biological film aeration tank is communicated with the first biological film aeration tank so as to treat the mixed liquid treated by the first biological film aeration tank; and

and the sedimentation tank is communicated with the second biological film aeration tank so as to treat the mixed liquid treated by the second biological film aeration tank.

9. The integrated processing system of claim 8, wherein:

the organic matter includes a flocculant and/or a bactericide.

10. The integrated processing system of claim 8, wherein:

the aeration rate of the first biological film aeration tank is 2-6L/min;

and the aeration rate of the second biological film aeration tank is 2-4L/min.