CN113307419A - Small garbage transfer station leachate treatment device and treatment method - Google Patents

Small garbage transfer station leachate treatment device and treatment method Download PDF

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CN113307419A
CN113307419A CN202110557627.7A CN202110557627A CN113307419A CN 113307419 A CN113307419 A CN 113307419A CN 202110557627 A CN202110557627 A CN 202110557627A CN 113307419 A CN113307419 A CN 113307419A
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tank
air flotation
membrane treatment
water
transfer station
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黄潇
段崇森
于江华
陈寒风
高永强
陈书豪
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Nanjing University of Information Science and Technology
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Nanjing University of Information Science and Technology
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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
    • 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
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46176—Galvanic cells
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/46109—Electrodes
    • C02F2001/46133—Electrodes characterised by the material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/06—Contaminated groundwater or leachate

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

本发明公开了一种小型垃圾中转站渗滤液处理装置及处理方法，该装置包括预处理单元、微电解单元、膜处理单元和智能控制单元，预处理单元包括相连通的调节池和气浮池，气浮池上设有加药罐，气浮池内设有气浮机，气浮池出水口处铺设有刮渣机；微电解单元包括一组铁碳微电解柱；膜处理单元包括一级DTRO膜处理设备和二级DTRO膜处理设备，用于对污水进行反渗透膜处理。本发明的小型垃圾中转站渗滤液处理装置系统结构紧凑，结构集中，能为在土地资源紧张的地区修建小型垃圾中转站提供了一种高效节能的方法。

Figure 202110557627

The invention discloses a small waste transfer station leachate treatment device and a treatment method. The device includes a pretreatment unit, a micro-electrolysis unit, a membrane treatment unit and an intelligent control unit. The pretreatment unit includes a connected adjustment tank and an air flotation tank. There is a dosing tank on the floating tank, an air flotation machine in the air flotation tank, and a slag scraper at the water outlet of the air flotation tank; the micro-electrolysis unit includes a set of iron-carbon micro-electrolysis columns; the membrane treatment unit includes a first-level DTRO membrane treatment equipment And secondary DTRO membrane treatment equipment for reverse osmosis membrane treatment of sewage. The small garbage transfer station leachate treatment device system of the invention has a compact and concentrated structure, and can provide a high-efficiency and energy-saving method for building a small garbage transfer station in an area with tense land resources.

Figure 202110557627

Description

Small garbage transfer station leachate treatment device and treatment method
Technical Field
The invention relates to the technical field, in particular to a small garbage transfer station leachate treatment device and a treatment method.
Background
The accelerated urbanization process leads to more and more garbage generated by the life of urban residents in China, and in addition, the garbage disposal plants are far away from urban areas, so more and more garbage transfer stations are built to avoid the cost increase caused by the direct transfer of the garbage. At present, filter pressing liquid and ground washing water generated by domestic small and medium-sized garbage transfer stations are mostly directly discharged into municipal pipe networks in cities and towns, high-concentration and difficult-to-degrade organic matters (usually COD is more than 8000 mg/L) can impact the normal operation of municipal sewage treatment plants, a large amount of suspended matters can also cause the blockage of the municipal pipe networks, and the black and odorous water phenomenon in China is aggravated. Therefore, the leachate from the garbage transfer station must be effectively treated to minimize the environmental impact.
For example, the traditional biochemical treatment process mainly including an anaerobic-aerobic fermentation process is combined with treatment technologies such as coagulating sedimentation, reverse osmosis and the like, and although the effluent discharged up to the standard can be realized, the traditional biochemical treatment process also has the use defect which is difficult to overcome. For example, the application patent No. CN201720730310.8 proposes a biological denitrification device for landfill leachate, which constructs a primary nitrification tank, a secondary digestion tank and an MBR system in turn, but because the landfill leachate has higher BOD and COD concentration, higher content of heavy metal ions and larger change of water quality and water quantity, a better treatment effect can not be achieved by simply adopting a biochemical treatment facility; application patent number CN201911140557.4 provides a landfill leachate integration purifier, and the device has built up upflow oxidation tank, facultative tank, nitrosation reaction tank, anaerobic ammonium oxidation pond and mud-water separation from, has realized that the processing up to standard of organic matter, ammonia nitrogen and phosphorus is discharged, but the required land resource of this patent design is more, is not suitable for the large-scale use of building the small-size rubbish transfer station near the residential quarter.
In addition, the treatment method mainly adopts electrooxidation and is matched with electroflocculation and membrane filtration, and the garbage percolation concentrated solution with high difficulty and high cost is generally degraded by catalytic oxidation so as to reach the discharge standard of a storage water body. For example, application patent No. CN202010733387.7 proposes an electrode and a treatment method for concentrated solution of electrochemical landfill leachate, the electrode material in the patent is titanium-based ruthenium-iridium-titanium-praseodymium oxide, but such electrode is expensive, the electrode for treating the leachate mainly by the method has heavy loss and huge process power consumption, hydrogen and toxic and harmful chlorine are generated in the electrolysis process, and the electrode is not suitable for the scale application in small-sized garbage transfer stations. Application patent No. CN104478157A provides a treatment method of landfill leachate nanofiltration concentrated solution, and the treatment method adopts the series connection process of electrolysis and ozone oxidation, although the treatment effect can be improved, humic acid in the concentrated solution can react with active chlorine to generate toxic byproducts, thereby generating higher toxic products.
Disclosure of Invention
The invention aims to provide a small-sized garbage transfer station leachate treatment device by combining the current situation of the existing garbage transfer station and aiming at the defects in the prior art, so that the needs of economic and social development can be better met, and the problem of the garbage leachate of the transfer station is successfully solved.
The invention also aims to provide a method for treating percolate of the small-sized garbage transfer station.
The purpose of the invention is realized by the following technical scheme:
a small garbage transfer station leachate treatment device comprises a pretreatment unit, a micro-electrolysis unit, a membrane treatment unit and an intelligent control unit, wherein the pretreatment unit comprises a regulating tank and an air floatation tank which are communicated, a chemical feeding tank is arranged on the air floatation tank, an air floatation machine is arranged in the air floatation tank, and a residue scraping machine is laid at a water outlet of the air floatation tank; the micro-electrolysis unit comprises a group of iron-carbon micro-electrolysis columns; the membrane treatment unit comprises primary DTRO membrane treatment equipment and secondary DTRO membrane treatment equipment and is used for carrying out reverse osmosis membrane treatment on sewage; the water outlet of the air floatation tank is communicated with the water inlet at the lower end of the iron-carbon micro-electrolysis column, the water outlet at the upper end of the iron-carbon micro-electrolysis column is communicated with the water inlets of the first-stage DTRO membrane treatment equipment and the second-stage DTRO membrane treatment equipment, and the concentrated solution outlet of the two-stage DTRO membrane treatment equipment is respectively communicated with the water inlet of the iron-carbon micro-electrolysis column through a liquid return pipe; the water outlet of the two-stage DTRO membrane treatment equipment is respectively communicated with a municipal pipe network, and the water outlet of the first-stage DTRO membrane treatment equipment is also provided with a liquid return pipe communicated with the water inlet of the second-stage DTRO membrane treatment equipment; the intelligent control unit comprises a first water quality sensor, a second water quality sensor and an RTU device, wherein the first water quality sensor and the second water quality sensor are respectively arranged at water outlets of the first-stage DTRO membrane treatment equipment and the second-stage DTRO membrane treatment equipment, and are respectively connected with the RTU device and then transmit monitoring data to the client terminal through the base station.
In a further design scheme of the invention, the volume of the regulating pool is 200-3。
In a further design scheme of the invention, the volume of the air floatation tank is controlled to be 400-600 m3Three air floatation machines are arranged in the air floatation tank, and are respectively arranged at the front 10-15%, 45-55% and the tail end 75-90% of the air floatation tank. The three air flotation machines are operated in series, and suspended matters and partial organic matters are better removed through synergistic effect.
In a further design scheme of the invention, the medicine adding tank is positioned at 10-15% of the air floatation tank.
A method for treating percolate of a small garbage transfer station comprises the following specific steps:
step 1, regulating and controlling the quality and quantity of dental acid from a garbage transfer station and wastewater generated by vehicle transportation in a regulating tank.
Step 2, after the wastewater enters the air flotation tank, adding PAC and ferrous sulfate in a dosing tank into the wastewater in the air flotation tank, carrying out aeration treatment for 7-9h by using an air flotation machine, and removing large precipitated particles and partial COD by using a slag scraper; the dosing flow is controlled to be 200-400 mg/L, and compared with the rest sewage treatment devices, the dosing amount of the device is less.
And 3, allowing the wastewater treated by the air floatation tank to enter an iron-carbon micro-electrolysis column for micro-electrolysis treatment for 10-12h, and oxidizing organic matters which are difficult to degrade in the wastewater into micromolecular organic matters.
And 4, performing DTRO membrane treatment on the sewage treated by the iron-carbon micro-electrolysis column, separating treated water from concentrated solution by utilizing the reverse osmosis effect, returning the concentrated solution to the step 3 for treatment, discharging the treated water to a municipal pipe network after the treated water reaches the standard after being monitored by a water quality sensor, and returning the treated water which does not reach the standard to perform DTRO membrane treatment.
In a further design scheme of the invention, the volume of the regulating pool in the step 1 is 200-300 m3。
In a further design scheme of the invention, the volume of the air floatation tank in the step 2 is controlled to be 400-600 m3The aeration flow rate is 8-10L/h.
In a further design scheme of the invention, the volume of the iron-carbon micro-electrolysis column in the step 3 is 1400-1600 m3。
The invention has the following outstanding advantages:
the leachate treatment device of the small garbage transfer station has a compact and centralized structure, and can provide an efficient and energy-saving method for building the small garbage transfer station in an area with short land resources;
according to the invention, a group of iron-carbon micro-electrolysis cells is arranged in front of the DRTO membrane, so that macromolecular substances which are difficult to degrade are successfully converted into small molecular substances, the pollution of the DTRO membrane is effectively reduced, and the service life of the DTRO membrane is prolonged.
The concentrated solution generated by the DTRO membrane can be effectively treated, and the phenomenon of discharging the concentrated solution is avoided.
Drawings
FIG. 1 is a schematic structural diagram of a leachate treatment apparatus of a small-sized refuse transfer station in an embodiment;
in the figure, 1-a regulating tank, 2-an air flotation tank, 3-a dosing tank, 4-an air flotation machine, 5-a residue scraping machine, 6-an iron-carbon micro-electrolysis column, 7-first-stage DTRO membrane treatment equipment, 8-second-stage DTRO membrane treatment equipment, 9-a liquid return pipe, 10-an RTU device, 11-a base station and 12-a client terminal.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
Examples
The utility model provides a small-size rubbish transfer station filtration liquid processing apparatus, includes preprocessing unit, little electrolysis unit, membrane processing unit and intelligent control unit, and preprocessing unit is including equalizing basin 1 and air supporting pond 2 that are linked together, and the volume of equalizing basin 1 is 200 and gives first place to 300 m3. The chemical feeding tank 3 is arranged on the air flotation tank 2, the chemical feeding tank 3 is positioned at 210-15% of the air flotation tank, and three air flotation machines 4 are arranged in the air flotation tank 2 and are respectively arranged at the front 10-15%, 45-55% and the tail end 75-90% of the air flotation tank 2. The three air floatation machines 4 are connected in series to better remove suspended matters and partial organic matters through synergistic effect, and the volume of the air floatation tank 2 is controlled to be 400-600 m3A slag scraper 5 is paved at the water outlet of the air floatation tank 2; the micro-electrolysis unit comprises a group of iron-carbon micro-electrolysis columns 6; the membrane treatment unit comprises a primary DTRO membrane treatment device 7 and a secondary DTRO membrane treatment device 8, and is used for carrying out reverse osmosis membrane treatment on sewage; the water outlet of the air floatation tank 2 is communicated with the water inlet at the lower end of the iron-carbon micro-electrolysis column 6, the water outlet at the upper end of the iron-carbon micro-electrolysis column 6 is communicated with the water inlets of the first-stage DTRO membrane treatment equipment 7 and the second-stage DTRO membrane treatment equipment 8, and the concentrated solution outlets of the two-stage DTRO membrane treatment equipment are respectively communicated with the water inlet of the iron-carbon micro-electrolysis column 6 through a liquid return pipe 9; the water outlets of the two-stage DTRO membrane treatment equipment are respectively communicated with a municipal pipe network, and the water outlet of the first-stage DTRO membrane treatment equipment 7 is also provided with a liquid return pipe 9 communicated with the water inlet of the second-stage DTRO membrane treatment equipment 8; the intelligent control unit comprises a first water quality sensor, a second water quality sensor and an RTU device 10, wherein the first water quality sensor and the second water quality sensor are respectively arranged at water outlets of a first-stage DTRO membrane treatment device 7 and a second-stage DTRO membrane treatment device 8, the first water quality sensor and the second water quality sensor are respectively connected with the RTU device 10, and then monitoring data are transmitted to a client terminal 12 through a base station 11.
The method for treating the percolate of the small garbage transfer station comprises the following specific steps:
the quality of the taken inlet water is that COD is 50000-4 +N is 1200-1500 mg/L, SS is 12000-15000 mg/L.
Step 1, conveying the dental acid and vehicle transportation products from the garbage transfer station in an adjusting tank 1The regulation and control of the quality and quantity of the raw wastewater, and the quantity and quality of the water of the garbage transfer station are changed along with the time. The volume of the regulating reservoir 1 is adjusted to adjust the change of the water quantity so as to prevent the waste water from being influenced by the peak flow of the waste water or the high-concentration waste liquid. If a regulating tank 1 is not arranged, the percolate with too high concentration and high flow can damage the normal use of the subsequent device, so that the whole treatment system is broken down, and the treatment effect is poor. The patent defines the generation amount of the percolate of the small-sized garbage transfer station as 200-300 m in combination with the generation amount of the percolate2。
And 2, after the wastewater enters the air flotation tank 2, adding PAC and ferrous sulfate in the chemical adding tank 3 into the wastewater in the air flotation tank 2, wherein the chemical adding tank 3 is positioned at 210-15% of the air flotation tank, the construction of the air flotation tank 2 is determined according to the construction of an air flotation machine 4, and the purpose of the construction is mainly to reduce the adding of agents such as PAC and ferrous sulfate and the like, so that the operation cost is reduced to the maximum extent. Carrying out aeration treatment for 7-9h by using an air floatation machine 4, and controlling the volume of an air floatation tank 2 at 400-600 m3The aeration flow rate is 8-10L/h. Removing large precipitated particles and partial COD by using a slag scraper 5; the chemical adding flow is controlled to be 200-400 mg/L, and the first separation of the mud and the water is completed.
3, allowing the wastewater treated by the air floatation tank 2 to enter an iron-carbon micro-electrolysis column 6 for micro-electrolysis treatment for 10-12h, and oxidizing organic matters which are difficult to degrade in the wastewater into micromolecular organic matters; the volume of the iron-carbon micro-electrolysis column 6 is 1400-1600 m3After micro-electrolysis treatment, the water quality index of the sewage is as follows: COD less than or equal to 1000 mg/L, NH4 +N is 200-300 mg/L, SS is less than or equal to 100mg/L, and the number of pathogenic bacteria is more than 1000 CFU/100 mL.
Step 4, performing DTRO membrane treatment on the sewage treated by the iron-carbon micro-electrolysis column 6, separating the treated water from the concentrated solution by utilizing the reverse osmosis effect, returning the concentrated solution to the step 3 for treatment, and monitoring the treated water by a water quality sensor to reach the standard (namely effluent suspended matter (SS) > 100mg/L, Chemical Oxygen Demand (COD) > 100mg/L and ammonia Nitrogen (NH)4 +-N) > 15mg/L, the number of pathogenic bacteria > 1 CFU/100mL) and discharged into a municipal pipe network, and the water which does not reach the standard is returned to carry out DTRO membrane treatment.
Percolate through small garbage transfer stationAfter the integrated intensive treatment equipment is used for treatment, the effluent of the system can reach COD (chemical oxygen demand) less than or equal to 100mg/L and NH4 +N is less than or equal to 15mg/L, SS is less than or equal to 100mg/L, pH is 6-9, and the number of pathogenic bacteria is less than 1 CFU/100 mL.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.

Claims (8)

1.一种小型垃圾中转站渗滤液处理装置，其特征在于，包括预处理单元、微电解单元、膜处理单元和智能控制单元，所述预处理单元包括相连通的调节池（1）和气浮池（2），所述气浮池（2）上设有加药罐（3），气浮池（2）内设有气浮机（4），气浮池（2）出水口处铺设有刮渣机（5）；所述微电解单元包括一组铁碳微电解柱（6）；所述膜处理单元包括一级DTRO膜处理设备（7）和二级DTRO膜处理设备（8），用于对污水进行反渗透膜处理；所述气浮池（2）出水口与铁碳微电解柱（6）下端进水口连通，铁碳微电解柱（6）上端出水口与一级DTRO膜处理设备（7）和二级DTRO膜处理设备（8）的进水口连通，两级DTRO膜处理设备的浓液出口分别通过返液管（9）与铁碳微电解柱（6）的进水口相连通；两级DTRO膜处理设备的出水口分别与市政管网相连通，一级DTRO膜处理设备（7）的出水口还设有与二级DTRO膜处理设备（8）进水口连通的返液管（9）；所述智能控制单元包括第一水质传感器、第二水质传感器和RTU装置（10），所述第一水质传感器和第二水质传感器分别设于一级DTRO膜处理设备（7）和二级DTRO膜处理设备（8）的出水口，第一水质传感器和第二水质传感器分别与所述RTU装置（10）连接，然后通过基站（11）向客户终端（12）传递监测数据。1. A small waste transfer station leachate treatment device, characterized in that it includes a pretreatment unit, a micro-electrolysis unit, a membrane treatment unit and an intelligent control unit, and the pretreatment unit includes a connected adjustment tank (1) and an air flotation tank. (2), a dosing tank (3) is arranged on the air flotation tank (2), an air flotation machine (4) is arranged in the air flotation tank (2), and a slag scraper ( 5); the micro-electrolysis unit includes a group of iron-carbon micro-electrolysis columns (6); the membrane treatment unit includes a first-level DTRO membrane treatment device (7) and a second-level DTRO membrane treatment device (8), which are used for treating sewage. Reverse osmosis membrane treatment is carried out; the water outlet of the air flotation tank (2) is communicated with the water inlet at the lower end of the iron-carbon micro-electrolysis column (6), and the water outlet at the upper end of the iron-carbon micro-electrolysis column (6) is connected with the first-level DTRO membrane treatment equipment (7) It is connected with the water inlet of the two-stage DTRO membrane treatment equipment (8), and the concentrate outlet of the two-stage DTRO membrane treatment equipment is connected with the water inlet of the iron-carbon micro-electrolysis column (6) through the liquid return pipe (9) respectively; The water outlets of the DTRO membrane treatment equipment are respectively connected with the municipal pipe network, and the water outlet of the primary DTRO membrane treatment equipment (7) is also provided with a return pipe (9) which is connected to the water inlet of the secondary DTRO membrane treatment equipment (8). ; The intelligent control unit comprises a first water quality sensor, a second water quality sensor and an RTU device (10), the first water quality sensor and the second water quality sensor are respectively located in the primary DTRO membrane treatment equipment (7) and the secondary DTRO The water outlet of the membrane treatment equipment (8), the first water quality sensor and the second water quality sensor are respectively connected to the RTU device (10), and then transmit monitoring data to the client terminal (12) through the base station (11). 2.根据权利要求1所述的小型垃圾中转站渗滤液处理装置，其特征在于，所述调节池（1）的容积为200-300 m3。2 . The leachate treatment device of a small garbage transfer station according to claim 1 , wherein the volume of the adjustment tank ( 1 ) is 200-300 m 3 . 3 . 3.根据权利要求1所述的小型垃圾中转站渗滤液处理装置，其特征在于，所述气浮池（2）的容积控制在400-600 m3，气浮池（2）内的气浮机（4）设有三个，分别设置在气浮池（2）的前10-15%处，45%-55%处和末端75%-90%处，三个气浮机的串联运行。3. The leachate treatment device of a small garbage transfer station according to claim 1, wherein the volume of the air flotation tank (2) is controlled at 400-600 m 3 , and the air flotation machine ( 4) There are three sets, which are respectively set at the first 10-15%, 45%-55% and the end 75%-90% of the air flotation tank (2), and the three air flotation machines operate in series. 4.根据权利要求1所述的小型垃圾中转站渗滤液处理装置，其特征在于，所述加药罐（3）位于气浮池（2）10-15%处。4 . The leachate treatment device of a small garbage transfer station according to claim 1 , wherein the dosing tank ( 3 ) is located at 10-15% of the air flotation tank ( 2 ). 5 . 5.一种小型垃圾中转站渗滤液处理方法，其特征在于，包括以下具体步骤：5. A method for treating leachate in a small garbage transfer station, characterized in that it comprises the following specific steps: 步骤1，在调节池（1）内对来自垃圾中转站牙酸和车辆运输产生的废水的水质水量的调控；Step 1, regulating the water quality and quantity of waste water from the waste transfer station tooth acid and vehicle transportation in the regulating tank (1); 步骤2，废水进入气浮池（2）后，将加药罐（3）内的PAC和硫酸亚铁加入气浮池（2）内的废水中，用气浮机（4）进行曝气处理7-9h，使用刮渣机（5）去除沉淀大颗粒及部分的COD；加药流量控制在200-400 mg/L；Step 2, after the waste water enters the air flotation tank (2), add the PAC and ferrous sulfate in the dosing tank (3) into the waste water in the air flotation tank (2), and use the air flotation machine (4) for aeration treatment 7- 9h, use the slag scraper (5) to remove the precipitated large particles and part of the COD; the dosing flow is controlled at 200-400 mg/L; 步骤3，经气浮池（2）处理后的废水进入铁碳微电解柱（6）中微电解处理10-12h，将废水中难降解有机物氧化成小分子的有机物；Step 3, the wastewater treated by the air flotation tank (2) enters the iron-carbon micro-electrolysis column (6) for micro-electrolysis treatment for 10-12 hours, and oxidizes the refractory organic matter in the wastewater into small-molecule organic matter; 步骤4，经铁碳微电解柱（6）处理后污水进行DTRO膜处理，利用反渗透的作用完成处理后水和浓液的分离，浓液返回步骤3进行处理，处理后水经水质传感器监测达标后排放到市政管网，未达标的处理后水返回进行DTRO膜处理。In step 4, the sewage is treated by the iron-carbon micro-electrolysis column (6) and subjected to DTRO membrane treatment, and the separation of the treated water and the concentrated liquid is completed by the action of reverse osmosis, and the concentrated liquid is returned to step 3 for treatment, and the treated water is monitored by a water quality sensor After reaching the standard, it is discharged to the municipal pipe network, and the treated water that does not meet the standard is returned for DTRO membrane treatment. 6.根据权利要求5所述的小型垃圾中转站渗滤液处理方法，其特征在于，步骤1中所述调节池（1）的容积为200-300 m3。6 . The leachate treatment method of a small garbage transfer station according to claim 5 , wherein the volume of the regulating tank ( 1 ) in step 1 is 200-300 m 3 . 7.根据权利要求5所述的小型垃圾中转站渗滤液处理方法，其特征在于，步骤2中气浮池（2）的容积控制在400-600 m3，曝气流量为8-10L/h。7 . The leachate treatment method of a small garbage transfer station according to claim 5 , wherein the volume of the flotation tank ( 2 ) in step 2 is controlled at 400-600 m 3 , and the aeration flow is 8-10 L/h. 8 . 8.根据权利要求5所述的小型垃圾中转站渗滤液处理方法，其特征在于，步骤3中铁碳微电解柱（6）的容积在1400-1600 m3。8 . The leachate treatment method of a small garbage transfer station according to claim 5 , wherein the volume of the iron-carbon micro-electrolysis column ( 6 ) in step 3 is 1400-1600 m 3 .
CN202110557627.7A 2021-05-21 2021-05-21 Small garbage transfer station leachate treatment device and treatment method Pending CN113307419A (en)

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CN110921986A (en) * 2019-12-06 2020-03-27 成都利尔环保技术开发有限公司 Method and system for treating intermediate and old aged landfill leachate
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Application publication date: 20210827