CN112591989A - Small-sized sewage and solid waste comprehensive treatment and disposal system and method thereof - Google Patents
Small-sized sewage and solid waste comprehensive treatment and disposal system and method thereof Download PDFInfo
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- CN112591989A CN112591989A CN202011340218.3A CN202011340218A CN112591989A CN 112591989 A CN112591989 A CN 112591989A CN 202011340218 A CN202011340218 A CN 202011340218A CN 112591989 A CN112591989 A CN 112591989A
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/957—Apparatus therefor using two or more serially arranged devices
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/90—Apparatus therefor
- C05F17/989—Flow sheets for biological or biochemical treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Biotechnology (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a small-sized sewage and solid waste comprehensive treatment and disposal system, which comprises a sewage purification unit, a solid waste treatment and disposal unit, a malodorous gas purification unit and a comprehensive absorption unit; the sewage purification unit comprises a sewage collection system, a grating well and a sewage treatment system which are sequentially arranged along the flowing direction of sewage; a malodorous gas discharge port in the sewage treatment system is in conduction connection with a malodorous gas purification unit through a pipeline, and a sludge discharge port in the sewage treatment system is in conduction connection with sludge dewatering equipment through a pipeline; a clean water discharge port in the sewage treatment system is in conduction connection with a clean water tank through a pipeline, and the clean water tank is in conduction connection with the comprehensive absorption unit through a pipeline; the invention fully combines the characteristics of sewage treatment and solid waste treatment and disposal devices, carries out mutual treatment and disposal on secondary pollutants generated in the pollutant treatment and disposal processes, and meets the requirement of zero emission of pollutants.
Description
Technical Field
The invention relates to a sewage and solid waste comprehensive treatment system, in particular to a small sewage and solid waste comprehensive treatment and disposal system and a method thereof.
Background
The expressway service area is an important component of expressway construction, is generally in a symmetrical layout and relatively large in scale, is mainly operated by various service contents including oil filling, supermarkets, catering, lodging, bathrooms, public toilets, automobile repair and the like, and has sewage sources mainly including domestic wastewater and catering wastewater generated by workers. With the increasingly mature operation of highways, the sewage yield of service areas is increased, and due to the inadequate design of sewage treatment measures and operation and maintenance management, a large amount of domestic sewage and oily sewage from restaurants can overflow, so that the surrounding ecological environment is seriously affected, and adverse effects are caused to the service areas and operation management companies, which becomes a common phenomenon of the operation of the service areas of highways. Although the case of the expressway management station and the toll station is slightly better than that of the service area, the expressway management station and the toll station have some characteristics.
The sewage treatment process of the high-speed service area (management station, charge station) is generally classified into three types: A/O contact oxidation, an A/O + MBR process and an E-CR artificial rapid infiltration method. The A/O contact oxidation process has high operation cost and a plurality of fault points, and equipment is basically in a shutdown state; the A/O + MBR process cannot realize long-term stable standard operation of equipment due to the problems of poor temperature adaptability, difficult maintenance, high operation and maintenance cost and the like, and has poorer use effect in cold regions and remote places; the E-CR artificial rapid infiltration method is used for sewage treatment according to the basic principle of the artificial wetland, the process occupies large area, is used in the open air, has bad smell, has low energy consumption, requires frequent tedding of filter materials, regular replacement of the filter materials and difficult maintenance, is greatly influenced by temperature and regions, and is mostly used in southern China.
In addition, the sewage of the expressway service area (management station and toll station) also has the characteristics of high ammonia nitrogen content, high phosphorus content and imbalance of carbon, nitrogen and phosphorus proportion. Because the proportion of carbon and nitrogen is disordered, chemical agent supplement devices such as carbon sources and the like are frequently added in the common process, so that the process operation and maintenance are complex, equipment faults are frequent, and the sewage cannot stably reach the standard.
The garbage in the expressway service station area (toll station and management station) is mainly the waste generated in leisure places such as toilet waste, kitchen waste, plaza and the like, and mainly comprises food bags, food packaging materials, toilet paper, paper towels, residual food, residues, kitchen waste and the like. At present, the garbage is generally collected and transported by a garbage disposal unit regularly for centralized treatment. The treatment method mainly comprises the modes of sanitary landfill and waste incineration. The sanitary landfill is simple in operation and low in cost, but the landfill site has the problems of large occupied area, difficult site selection, difficulty in treating percolate and possible influence on underground water and other potential safety hazards, and the sanitary landfill is essentially the site transfer of pollutants, does not treat and dispose the pollutants, and is an unsustainable garbage treatment mode. The garbage incineration has the advantages of small occupied area, quick treatment, large treatment capacity and obvious reduction, but pollutants such as acid smoke, ash, fly ash and the like are generated in the treatment process, and dioxin and other gases with strong carcinogenicity are generated. Therefore, although the waste incineration better treats the waste, the waste incineration only achieves the reduction of pollutants and harm, and the concept of recycling the waste is not realized.
In addition, the sources of the wastewater of the expressway service station areas are mainly domestic water such as kitchen wastewater, toilet flushing water and the like, most station areas are provided with sewage treatment devices, but sludge generated in the sewage treatment process is not treated and is generally stacked in the service station areas for disposal. The sludge has high water content, is easy to rot and has strong odor, contains a large amount of pathogenic bacteria, parasitic ova, heavy metals and toxic and harmful substances which are difficult to degrade, and can cause direct or potential harm to the environment if not properly treated.
In addition, a lot of greening land is available in places represented by expressway service station areas (management stations and toll stations), or rural land is available around the places, so that pollutants generated in the places can be treated and absorbed after reaching standards.
In view of the above, there is a need for a pollutant treatment process for comprehensively treating pollutants such as waste water and solid waste in places represented by highway service stations (management stations and toll stations).
Disclosure of Invention
The invention aims to provide a small-sized sewage and solid waste comprehensive treatment and disposal system and a method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a small-sized sewage and solid waste comprehensive treatment disposal system comprises a sewage purification unit, a solid waste treatment disposal unit, a malodorous gas purification unit and a comprehensive absorption unit;
the sewage purification unit comprises a sewage collection system, a grating well and a sewage treatment system which are sequentially arranged along the flowing direction of sewage; a malodorous gas discharge port in the sewage treatment system is in conduction connection with a malodorous gas purification unit through a pipeline, and a sludge discharge port in the sewage treatment system is in conduction connection with sludge dewatering equipment through a pipeline; a clean water discharge port in the sewage treatment system is in conduction connection with a clean water tank through a pipeline, and the clean water tank is in conduction connection with the comprehensive absorption unit through a pipeline;
the solid waste treatment and disposal unit comprises a waste collection device, a waste sorting device and a waste treatment system which are sequentially arranged along the waste conveying direction; the inlet of the garbage collection device is respectively connected with the grating well and the sludge dewatering device; a separation liquid outlet in the garbage treatment system is in conduction connection with separation liquid collection equipment through a pipeline, and the separation liquid collection equipment is in conduction connection with a grid well through a pipeline; the foul gas export among the refuse treatment system passes through pipeline and foul gas purification unit turn-on connection, and the fertilizer export turn-on connection among the refuse treatment system has fertilizer collecting device, fertilizer collecting device with synthesize the unit connection that dissolves.
As a further scheme of the invention: the sewage collecting system comprises a domestic wastewater collecting system and a kitchen wastewater collecting system, the domestic wastewater collecting system is connected with a septic tank through a pipeline in a conduction mode, the kitchen wastewater collecting system is connected with an oil separation tank through a pipeline in a conduction mode, and the septic tank and the oil separation tank are respectively connected with a grid well through pipelines in a conduction mode.
As a further scheme of the invention: the sewage treatment system comprises a regulating tank, a pretreatment system, an intermediate water tank and a sewage advanced treatment device which are sequentially arranged along the flow direction of sewage; the grid well is in conduction connection with the adjusting tank, the pretreatment system is in conduction connection with the sludge dewatering equipment and the malodorous gas purification unit respectively, and the sewage deep treatment device is in conduction connection with the clean water tank.
As a further scheme of the invention: the garbage treatment system comprises garbage crushing equipment, material stirring equipment and a material fermentation chamber which are arranged along the garbage conveying direction; the inlet of the garbage crushing device is connected with the garbage sorting device, the separation liquid outlet of the garbage crushing device is connected with the separation liquid collecting device, and the malodorous gas outlet of the garbage crushing device is connected with the malodorous gas purifying unit; the separating medium export and the separating medium collecting device of material fermentation room are connected, and the foul gas export and the foul gas purification unit of material fermentation room are connected, and the fertilizer export and the fertilizer collecting device of material fermentation room are connected.
As a further scheme of the invention: the malodorous gas purification unit comprises a malodorous gas purification device and standard discharge equipment which is in conduction connection with the malodorous gas purification device through a pipeline.
As a further scheme of the invention: the comprehensive consumption unit comprises a landscape greenhouse, and the clean water tank and the organic fertilizer collecting equipment are respectively connected with the landscape greenhouse.
A small-sized sewage and solid waste comprehensive treatment disposal method comprises the following steps:
step one, sewage purification, comprising the following steps:
103, treating the sewage in the regulating tank by the pretreatment system, the intermediate tank and the sewage advanced treatment device in sequence, and then flowing into the clear water tank;
104, discharging the malodorous gas generated in the pretreatment system into a malodorous gas purification device, and dewatering sludge generated in the pretreatment system by a sludge dewatering device and then feeding the sludge into a garbage collection device;
step two, solid waste treatment, comprising the following steps:
step three, malodorous gas purification, which comprises the following steps:
301, purifying malodorous gas in the pretreatment system, the garbage crushing equipment and the material fermentation chamber by a malodorous gas purification device, and discharging the treated gas into standard discharge equipment;
step four, comprehensive digestion, comprising the following steps:
step 402, fertilizing plants in the landscape greenhouse by organic fertilizers in the organic fertilizer collecting equipment.
Compared with the prior art, the invention has the beneficial effects that:
the invention fully combines the characteristics of sewage treatment and solid waste treatment and disposal devices, carries out mutual treatment and disposal on secondary pollutants generated in the pollutant treatment and disposal processes, and meets the requirement of zero emission of pollutants. Specifically, the sewage purification unit treats the separated liquid generated in the solid waste treatment and disposal unit, and the solid waste treatment and disposal unit treats and disposes sundries and dehydrated sludge intercepted by a grid well (machine) of the sewage purification unit until organic fertilizer is produced, and plants are utilized to absorb the organic matters in the landscape greenhouse.
By integrating the process, the whole pollutant treatment process meets the requirement of zero emission of pollutants and realizes resource utilization of pollutants. The invention can be integrated in a container and is very flexible to use. The whole process of the treatment process is closed, sewage, solid waste and gas are treated, and the working environment is clean and comfortable.
The landscape greenhouse is adopted to absorb pollutants, landscape design can be carried out on the landscape greenhouse according to the situation of the location, the environment is beautified, and physical and psychological health of workers at the location is facilitated. Especially in northern areas, the adoption of landscape greenhouses also improves the pollutant digestion capacity in winter.
Drawings
Fig. 1 is a schematic structural diagram of a small-sized sewage and solid waste comprehensive treatment system and a method thereof.
In the figure: 1. a sewage purification unit; 101. a sewage collection system; 1011. a domestic wastewater collection system; 1012. a kitchen waste water collection system; 1013. a septic tank; 1014. an oil separation tank; 102. a grid well; 103. a sewage treatment system; 1031. a regulating tank; 1032. a pre-treatment system; 1033. a middle water tank; 1034. a sewage advanced treatment device; 104. a sludge dewatering device; 2. a solid waste treatment and disposal unit; 201. a waste collection device; 202. a waste sorting device; 203. a waste disposal system; 2031. a waste crushing device; 2032. a material stirring device; 2033. a material fermentation chamber; 204. a separation liquid collection device; 3. a malodorous gas purification unit; 301. a malodorous gas purification device; 302. standard discharge equipment; 4. a comprehensive digestion unit; 401. a landscape greenhouse; 5. a clean water tank; 6. organic fertilizer collecting equipment.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1, a small-sized sewage and solid waste comprehensive treatment and disposal system comprises a sewage purification unit 1, a solid waste treatment and disposal unit 2, a malodorous gas purification unit 3 and a comprehensive absorption unit 4; the sewage purification unit 1 comprises a sewage collection system 101, a grid well 102 and a sewage treatment system 103 which are arranged in sequence along the flow direction of sewage; a malodorous gas discharge port in the sewage treatment system 103 is in conduction connection with the malodorous gas purification unit 3 through a pipeline, and a sludge discharge port in the sewage treatment system 103 is in conduction connection with a sludge dewatering device 104 through a pipeline; a clean water discharge port in the sewage treatment system 103 is in conduction connection with a clean water tank 5 through a pipeline, and the clean water tank 5 is in conduction connection with the comprehensive absorption unit 4 through a pipeline; the sewage purification unit 1 is mainly a unit for treating domestic sewage, and also treats and purifies a separation liquid generated by the solid waste treatment unit 2. The grid well 102 is a commonly used structure for wastewater treatment, and the main part thereof is a grid sewage disposal machine. The main function of the grille is to protect the water pump and prevent the pipeline from being blocked, and certain pollutant load is reduced while the grille channel intercepts sewage. Sludge generated in the sewage treatment process is separated by solid-liquid separation equipment, the solid-liquid separation equipment generally adopts a plate and frame filter press, a screw stacking machine, a spiral centrifugal machine and the like, and the separated sludge (solid phase) is sent to a solid waste treatment unit 2 for treatment.
The solid waste treatment and disposal unit 2 comprises a waste collection device 201, a waste sorting device 202 and a waste treatment system 203 which are arranged in sequence along the waste conveying direction; the inlet of the garbage collection device 201 is respectively connected with the grid well 102 and the sludge dewatering device 104; a separation liquid outlet in the garbage disposal system 203 is in conduction connection with a separation liquid collecting device 204 through a pipeline, and the separation liquid collecting device 204 is in conduction connection with the grating well 102 through a pipeline; the foul gas export among the refuse treatment system 203 passes through pipeline and foul gas purification unit 3 turn-on connection, and the fertilizer export turn-on connection among the refuse treatment system 203 has fertilizer collecting device 6, fertilizer collecting device 6 is connected with comprehensive absorption unit 4. The solid waste treatment and disposal unit 2 is mainly used for treating and disposing domestic waste and office waste, and simultaneously also is used for treating and disposing sundries intercepted by the grid well 102 in the sewage treatment process. The garbage generated in the service station area (toll station, management station) of the expressway is collected by the garbage collection device 201, and the waste intercepted by the grid well 102 of the sewage treatment system and the dewatered sludge of the sewage treatment system 103 are also collected. The garbage sorting is to sort plastic products and metal products mixed in solid wastes.
Wherein, sewage collection system 101 includes domestic wastewater collection system 1011 and kitchen wastewater collection system 1012, domestic wastewater collection system 1011 has septic tank 1013 through pipeline turn-on connection, kitchen wastewater collection system 1012 has oil interceptor 1014 through pipeline turn-on connection, septic tank 1013 and oil interceptor 1014 are respectively through pipeline and grid well 102 turn-on connection. The domestic wastewater refers to domestic sewage mainly comprising urinal water, hand washing water and bath water; the kitchen waste water refers to waste water generated in the processes of washing vegetables, washing, making food and the like in a kitchen.
In addition, the sewage treatment system 103 comprises a regulating pond 1031, a pretreatment system 1032, an intermediate water pond 1033 and a sewage advanced treatment device 1034 which are arranged in sequence along the sewage flow direction; the grid well 102 is connected with the adjusting tank 1031, the pretreatment system 1032 is respectively connected with the sludge dewatering equipment 104 and the malodorous gas purification unit 3, and the sewage advanced treatment device 1034 is connected with the clean water tank 5. Because the output of sewage is not constant, in order to ensure that the sewage treatment device stably operates and reach the designed treatment capacity and index, a tank body for regulating the water storage amount is arranged as an adjusting tank 1031. The pretreatment device of the invention adopts a conventional AO process or AAO process or MBBR process in order to ensure the water inlet condition of the sewage advanced treatment device, in particular to countless pretreatment systems 1032 arranged for the pollutant concentration index. The advanced wastewater treatment unit 1034 is a special wastewater treatment device for thoroughly purifying and discharging wastewater up to the standard.
Meanwhile, the waste treatment system 203 comprises a waste crushing device 2031, a material stirring device 2032 and a material fermentation chamber 2033 which are arranged along the waste conveying direction; an inlet of the garbage crushing device 2031 is connected with the garbage sorting device 202, an outlet of a separation liquid of the garbage crushing device 2031 is connected with the separation liquid collecting device 204, and an outlet of malodorous gas of the garbage crushing device 2031 is connected with the malodorous gas purifying unit 3; the separation liquid outlet of the material fermentation chamber 2033 is connected with the separation liquid collecting device 204, the malodorous gas outlet of the material fermentation chamber 2033 is connected with the malodorous gas purifying unit 3, and the organic fertilizer outlet of the material fermentation chamber 2033 is connected with the organic fertilizer collecting device 6. The step of garbage crushing refers to that the sorted garbage is crushed to corresponding particle sizes through crushing equipment to meet the requirements of subsequent processes, and the garbage crushing equipment is a roll mill. The crushed garbage is added with additive in proper amount and stirred to mix the materials evenly, and the material stirring equipment 2032 adopts a dry stirrer. The fermentation temperature is controlled to be about 40-80 ℃, microorganisms are propagated and organic matters are degraded under the ventilation condition, so that high temperature is generated, pathogenic bacteria and weed seeds in the microorganisms are killed, the organic matters are stabilized, and the final product is the organic fertilizer. The separated liquid refers to a liquid phase obtained by solid-liquid separation during garbage crushing and material fermentation, and has the characteristics of high ammonia nitrogen and high COD. The separated liquid is collected by a collecting pipeline and directly discharged into a grid well 102 to enter a sewage treatment system 103 for purification treatment. The separation liquid is collected and conveyed in a totally-closed manner, no gaseous and liquid pollutants are generated and overflowed in the whole process, and the pollution-free process is ensured in the process of realizing the process.
Specifically, the malodorous gas purification unit 3 comprises a malodorous gas purification device 301 and standard emission equipment 302 which is in conduction connection with the malodorous gas purification device 301 through a pipeline. The malodorous gas purification unit 3 is a unit for purifying malodorous gases generated in the anaerobic section, anoxic section, aerobic section and the like of the pretreatment system in the sewage purification unit 1 and generated in the garbage crushing and fermentation processes. Comprises a foul gas collecting cover, a gas conveying pipeline, a gas purifying device, an exhaust fan and the like. Wherein the gas purification unit adopts the absorption tower to absorb malodorous gas, and the gas after the primary purification of the absorption tower is absorbed by the activated carbon purification device and then is discharged after reaching the standard.
Finally, the comprehensive consumption unit 4 comprises a landscape greenhouse 401, and the clean water tank 5 and the organic fertilizer collecting equipment 6 are respectively connected with the landscape greenhouse 401. The water after the sewage purification unit 1 is treated is discharged into a clean water tank 5, a lifting pump is arranged in the clean water tank 5, and the landscape greenhouse 401 is irrigated at regular time to absorb the water body. The organic fertilizer generated by the solid waste treatment and disposal unit 2 is also consumed by planting crops and plants. The crops planted include: garden ornamental plants, lawns, grain crops, vegetables, fruit trees, ornamental flowers and the like.
A small-sized sewage and solid waste comprehensive treatment disposal method comprises the following steps:
step one, sewage purification, comprising the following steps:
step two, solid waste treatment, comprising the following steps:
step three, malodorous gas purification, which comprises the following steps:
step four, comprehensive digestion, comprising the following steps:
and step 402, fertilizing plants in the landscape greenhouse 401 by using the organic fertilizer in the organic fertilizer collection equipment 6.
The working principle of the invention is as follows: domestic sewage and restaurant wastewater firstly flow into the grid well 102 after being merged by the septic tank 1013 and the oil separation tank 1014 respectively, grid grates are arranged in the grid well 102 to intercept blocky impurities such as plastic paper and fiber cloth in the sewage, and the rest sewage is discharged into the adjusting tank 1031. The adjusting tank 1031 has a large volume to adapt to the load change of sewage output, thereby realizing stable water supply to subsequent equipment, ensuring stable operation of the sewage treatment device, and being an accident water tank for dealing with the faults of a water supply and drainage system. The adjusting tank 1031 realizes the regulation and storage of water volume through the mode of linkage of the liquid level control system and the water pump.
The sewage in the adjusting tank 1031 enters the pretreatment tank through the water distributor, and flows into the sewage advanced treatment device 1034 after being pretreated by acidification and the like in the pretreatment tank. The sewage is treated by the sewage advanced treatment device 1034 to meet the requirement of 'quality of urban sewage recycling urban miscellaneous water' (GB/T18920-2002). Purified water reaching the standard automatically flows into the clean water tank 5 for storage, so that the daily greening, pavement flushing and plant planting purposes are ensured.
The garbage in the service area (management station, toll station) of the expressway is sorted, and metal products (such as pop-top cans and the like), plastic products (such as packaging bags, hand bags, glass products and the like are selected. And (4) recommending the user to carry out classification management on the garbage, and avoiding the substances from entering the garbage disposal system. The sorted garbage enters a crusher through a conveying device to crush large-particle materials (such as bones). The crushed materials are stirred and homogenized and then enter a fermentation chamber for fermentation. The fermentation temperature is controlled to be about 40-80 ℃, and under the condition of ventilation, microorganisms are propagated and organic matters are degraded, so that high temperature is generated, pathogenic bacteria and weed seeds in the organic matters are killed, the organic matters are stabilized, and the organic matters can be used as finished organic fertilizers and directly put into crop planting and ornamental plant planting.
Malodorous gas generated by the system in the process sections of garbage crushing, fermentation and the like is conveyed to a washing tower through a gas collecting system, and is absorbed and purified by washing liquid and then discharged into the atmosphere. The sewage generated by the materials in the process of crushing, separating and fermenting is directly discharged into the existing sewage treatment device through the collecting device for treatment.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (7)
1. A small-sized sewage and solid waste comprehensive treatment disposal system is characterized by comprising a sewage purification unit (1), a solid waste treatment disposal unit (2), a malodorous gas purification unit (3) and a comprehensive absorption unit (4);
the sewage purification unit (1) comprises a sewage collection system (101), a grating well (102) and a sewage treatment system (103) which are arranged in sequence along the sewage flowing direction; a malodorous gas discharge port in the sewage treatment system (103) is in conduction connection with the malodorous gas purification unit (3) through a pipeline, and a sludge discharge port in the sewage treatment system (103) is in conduction connection with a sludge dewatering device (104) through a pipeline; a clean water discharge port in the sewage treatment system (103) is in conduction connection with a clean water tank (5) through a pipeline, and the clean water tank (5) is in conduction connection with the comprehensive absorption unit (4) through a pipeline;
the solid waste treatment and disposal unit (2) comprises a waste collection device (201), a waste sorting device (202) and a waste treatment system (203) which are arranged in sequence along the waste conveying direction; the inlet of the garbage collection device (201) is respectively connected with the grating well (102) and the sludge dewatering device (104); a separation liquid outlet in the garbage disposal system (203) is in conduction connection with a separation liquid collecting device (204) through a pipeline, and the separation liquid collecting device (204) is in conduction connection with the grating well (102) through a pipeline; the foul gas export in the refuse treatment system (203) passes through pipeline and foul gas purification unit (3) turn-on connection, and the fertilizer export turn-on connection in the refuse treatment system (203) has fertilizer collecting device (6), fertilizer collecting device (6) are connected with comprehensive absorption unit (4).
2. The small-sized comprehensive sewage and solid waste treatment system according to claim 1, wherein the sewage collecting system (101) comprises a domestic wastewater collecting system (1011) and a kitchen wastewater collecting system (1012), the domestic wastewater collecting system (1011) is in conduction connection with a septic tank (1013) through a pipeline, the kitchen wastewater collecting system (1012) is in conduction connection with an oil separation tank (1014) through a pipeline, and the septic tank (1013) and the oil separation tank (1014) are respectively in conduction connection with the grid well (102) through pipelines.
3. The small-sized integrated sewage and solid waste treatment system according to claim 1, wherein the sewage treatment system (103) comprises a regulating pond (1031), a pretreatment system (1032), an intermediate water pond (1033) and a sewage advanced treatment device (1034) which are arranged in sequence along the flow direction of sewage; the grid well (102) is in conduction connection with the adjusting tank (1031), the pretreatment system (1032) is in conduction connection with the sludge dewatering equipment (104) and the malodorous gas purification unit (3) respectively, and the sewage deep treatment device (1034) is in conduction connection with the clean water tank (5).
4. A small-sized integrated sewage and solid waste treatment system according to claim 1, wherein said waste treatment system (203) comprises a waste crushing device (2031), a material stirring device (2032) and a material fermentation chamber (2033) arranged along a waste conveying direction; an inlet of the garbage crushing device (2031) is connected with the garbage sorting device (202), an outlet of a separation liquid of the garbage crushing device (2031) is connected with the separation liquid collecting device (204), and an outlet of malodorous gas of the garbage crushing device (2031) is connected with the malodorous gas purifying unit (3); the separation liquid outlet of the material fermentation chamber (2033) is connected with the separation liquid collecting device (204), the malodorous gas outlet of the material fermentation chamber (2033) is connected with the malodorous gas purifying unit (3), and the organic fertilizer outlet of the material fermentation chamber (2033) is connected with the organic fertilizer collecting device (6).
5. The small-sized comprehensive treatment and disposal system for sewage and solid waste according to claim 1, wherein said malodorous gas purification unit (3) comprises a malodorous gas purification device (301) and a standard discharge apparatus (302) in communication connection with said malodorous gas purification device (301) through a pipeline.
6. The small-sized comprehensive treatment and disposal system for sewage and solid waste according to claim 1, wherein said comprehensive absorption unit (4) comprises a landscape greenhouse (401), and said clean water tank (5) and said organic fertilizer collecting device (6) are respectively connected with said landscape greenhouse (401).
7. A small-sized sewage and solid waste comprehensive treatment and disposal method is characterized by comprising the following steps:
step one, sewage purification, comprising the following steps:
step 101, after being treated by a septic tank (1013) and an oil separation tank (1014), domestic wastewater and kitchen wastewater are converged and flow into a grid well (102);
step 102, intercepting sundries in sewage by a grid well (102), enabling the intercepted sewage to enter a regulating tank (1031), and enabling the intercepted sundries to enter garbage collection equipment (201);
step 103, treating the sewage in the adjusting tank (1031) by a pretreatment system (1032), an intermediate water tank (1033) and a sewage advanced treatment device (1034) in sequence, and then flowing into a clean water tank (5);
104, discharging the malodorous gas generated in the pretreatment system (1032) into a malodorous gas purification device (301), and dewatering sludge generated in the pretreatment system (1032) by a sludge dewatering device (104) and then feeding the sludge into a garbage collection device (201);
step two, solid waste treatment, comprising the following steps:
step 201, conveying garbage generated in a service area of the expressway, sundries intercepted by a grating well (102) and sludge dehydrated by sludge dehydration equipment (104) into garbage sorting equipment (202) through garbage collection equipment (201);
step 202, sorting the garbage by garbage sorting equipment (202), and sorting out metal products, plastic products, glass products and organic garbage;
step 203, treating the sorted organic garbage sequentially through a garbage crushing device (2031), a material stirring device (2032) and a material fermentation chamber (2033), and feeding the organic fertilizer generated after treatment into an organic fertilizer collecting device (6);
step 204, enabling separated liquid generated in the garbage crushing device (2031) and the material fermentation chamber (2033) to enter the grating well (102) through the separated liquid collecting device (204); malodorous gas generated in the garbage crushing equipment (2031) and the material fermentation chamber (2033) is discharged into the malodorous gas purification device (301);
step three, malodorous gas purification, which comprises the following steps:
step 301, the malodorous gas purification device (301) purifies the malodorous gas in the pretreatment system (1032), the garbage crushing equipment (2031) and the material fermentation chamber (2033), and the treated gas is discharged into the standard discharge equipment (302);
step 302, after the gas detected by the standard-reaching emission equipment (302) reaches the standard, the gas is emitted into the atmosphere;
step four, comprehensive digestion, comprising the following steps:
step 401, irrigating plants in the landscape greenhouse (401) by clear water in a clear water tank (5);
and step 402, fertilizing plants in the landscape greenhouse (401) by using the organic fertilizer in the organic fertilizer collecting equipment (6).
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