CN211035540U

CN211035540U - Electrochemical treatment device for landfill leachate

Info

Publication number: CN211035540U
Application number: CN201922012412.8U
Authority: CN
Inventors: 张小清
Original assignee: Zhushen Science & Technology Wuxi Co ltd
Current assignee: Zhushen Science & Technology Wuxi Co ltd
Priority date: 2019-11-20
Filing date: 2019-11-20
Publication date: 2020-07-17
Anticipated expiration: 2029-11-20

Abstract

The utility model discloses a landfill leachate electrochemical treatment device, a serial communication port, including controlling means, power supply unit, the concentrated groove of filtration liquid, electrochemical treatment case, the membrane processing case of intercommunication around still including, the electrochemical treatment case including imbibition pump, treatment trough, the treatment trough in be equipped with respectively with a plurality of negative plates, the anode plate of power supply unit intercommunication, the treatment trough both ends be equipped with inlet, liquid outlet respectively, the treatment trough is equipped with overflow pond, electrochemical cell, overflow pond and inlet intercommunication and separate through overflow board and electrochemical cell, the membrane processing case include force (forcing) pump, membrane processing groove, the membrane processing groove in be equipped with membrane processing device, the membrane processing groove is equipped with high-pressure inlet, water purification export, dense water export, the water purification export be equipped with the suction pump. The utility model discloses rational in infrastructure, convenient to use is nimble, and purifying effect is obvious, has adopted efficient electrochemistry method and membrane processing method to combine the processing apparatus structure.

Description

Electrochemical treatment device for landfill leachate

Technical Field

The utility model relates to an environmental protection equipment technical field especially relates to a landfill leachate electrochemical treatment device.

Background

The leachate is the product of gravity flow of liquid in the landfill and mainly comes from precipitation and the intrinsic water content of the garbage, and as the liquid has many factors which can affect the properties of the leachate in the flowing process, including physical factors, chemical factors, biological factors and the like, the properties of the leachate vary within a considerable range, generally, the pH value is between 4 and 9, the COD is in the range of 2000 to 62000 mg/L, the BOD5 is from 60 to 45000 mg/L, the concentration of heavy metals is basically consistent with that of heavy metals in municipal sewage.

Disclosure of Invention

The utility model relates to a solve landfill yard produced landfill leachate's processing problem, provide a rational in infrastructure, purifying effect is obvious, has adopted the landfill leachate electrochemical treatment device that electrochemistry method and membrane processing method combined.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the electrochemical treatment device for the garbage leachate comprises a control device and a power supply device, and further comprises a leachate concentration tank, an electrochemical treatment tank and a membrane treatment tank which are communicated with each other from front to back, wherein the electrochemical treatment tank comprises a liquid suction pump and a treatment tank, a plurality of negative plates and positive plates which are respectively communicated with the power supply device are arranged in the treatment tank, a liquid inlet and a liquid outlet are respectively arranged at two ends of the treatment tank, the liquid inlet is communicated with the liquid suction pump, the liquid outlet is communicated with the membrane treatment tank, the treatment tank is provided with an overflow tank and an electrochemical tank, the overflow tank is communicated with the liquid inlet and is separated from the electrochemical tank through the overflow plate, the liquid suction pump is connected with the power supply device and is communicated with the leachate concentration tank, the membrane treatment tank comprises a pressure pump and a membrane treatment tank, the membrane treatment tank is internally provided with a membrane treatment device, and is provided, The high-pressure liquid inlet is communicated with a pressure pump, the pressure pump is connected with a power supply device and communicated with a liquid outlet, a suction pump is arranged at the water purification outlet and connected with the power supply device, and the control device is connected with the power supply device. The electrochemical treatment of sewage and organic waste water has proved to be an effective means, the scheme adopts a treatment tank of an electrochemical method, the garbage percolate centralized in the garbage percolate centralized groove is sucked into the treatment groove by a water suction pump (driven by a power machine or electrically), because the flow rate of the sucked liquid is fast, the electrochemical treatment is directly carried out, the treatment efficiency is easy to reduce, the scheme is provided with the overflow tank, the water flow is blocked and accumulated by the overflow plate after being sucked, the water can overflow into the electrochemical tank (the cathode plate and the anode plate area) of the treatment tank after the water level in the overflow tank is higher than the overflow plate, after the full and effective electrochemical treatment process, metal ions generated by the electrochemical cell are combined with colloidal substances in the landfill leachate to form flocs, and the flocs are discharged from the landfill leachate, so that ammonia nitrogen and partial organic matters in the landfill leachate can be obviously removed; pumping the electrochemically treated liquid into a membrane treatment device by a pressure pump for filtering, pumping the filtered pure water by a suction pump, and allowing the filtered concentrated water to enter the next step for treatment; the membrane treatment device can adopt membrane separation technologies such as a reverse osmosis membrane, a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane and the like.

Preferably, the negative plates and the positive plates are arranged in the electrochemical cell in a staggered and parallel manner, a 10-15 cm interval is arranged between the negative plates and the positive plates, two groups of water level sensors are arranged in the electrochemical cell, one group of water level sensors are arranged above the upper sides of the negative plates and the positive plates, the other group of water level sensors are arranged above the lower sides of the negative plates and the positive plates, and the water level sensors are connected with the control device. The two groups of water level sensors are used for monitoring the water level in the electrochemical tank, the control device does not supply power to the cathode plate and the anode plate when the water level is lower, the cathode plate and the anode plate are supplied with power after the water level reaches the upper part of the lower side of the cathode plate and the upper side of the anode plate, and the pressurizing pump is started to pump liquid into the membrane treatment box for treatment after the water level reaches the upper part of the upper side of the cathode plate and the anode plate, so that the liquid inlet and; the control device comprises a singlechip, can process the information returned by the water level sensor and controls the power supply switch of the power supply device.

Preferably, a concentrated water outlet of the membrane treatment tank is provided with a concentrated water circulating pump, and the concentrated water circulating pump is provided with a circulating pipeline communicated with the overflow tank. When the scheme is used for treating the landfill leachate, if rainy seasons occur, a large amount of rainwater can be doped in the landfill leachate, the content of organic matters in the landfill leachate is reduced to a certain extent, and concentrated water can be discharged into a sewage pipe network for further treatment as general sewage after electrochemical treatment and membrane treatment; if the rainwater is less, the organic matter content in the landfill leachate is relatively more, the concentrated water after electrochemical treatment and membrane treatment can not be directly discharged, the concentrated water can be pumped into an overflow tank by a concentrated water circulating pump to be treated together with the landfill leachate, and pollutants in the concentrated water are less than the landfill leachate, so that the organic matter content of the landfill leachate can be reduced.

Preferably, the anode plate is a lead dioxide plate, and the power supply device comprises a diesel generator. The cathode plate and the anode plate are spaced and can be fixed in the treatment tank through the hanging frame, the anode plate is a lead dioxide plate, the anode plate is a soluble electrode, bacteria and organic matters in water can be efficiently removed, the loss of the soluble aluminum electrode can be effectively reduced, and the service life of the electrode is prolonged; the negative plate can be made of any metal material plate; the matched power supply system can be configured to be connected with a power supply device, and a diesel generator can be adopted to generate a supplementary power supply to supply power for the chemical treatment process and the membrane treatment process in emergency.

Therefore, the utility model discloses following beneficial effect has: (1) the structure is reasonable, and the use is convenient and flexible; (2) the purification effect is obvious, and a high-efficiency electrochemical method and a membrane treatment method are combined with a treatment device structure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the electrochemical treatment chamber of the present invention.

In the figure: 1. leachate concentration tank 2, electrochemical treatment tank 3, membrane treatment tank 4 and liquid absorption pump

5. A treatment tank 6, a cathode plate 7, an anode plate 8, a liquid inlet 9 and a liquid outlet

10. Overflow tank 11, electrochemical tank 12, overflow plate 13 and pressure pump

14. A high-pressure liquid inlet 15, a purified water outlet 16, a concentrated water outlet 17 and a suction pump

18. Water level sensor 19, concentrated water circulating pump 20, circulating line.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 and 2, the electrochemical treatment device for landfill leachate comprises a control device and a power supply device, and further comprises a leachate concentration tank 1, an electrochemical treatment tank 2 and a membrane treatment tank 3 which are communicated with each other from front to back, wherein the electrochemical treatment tank 2 comprises a liquid absorption pump 4 and a treatment tank 5, a plurality of cathode plates 6 and anode plates 7 which are respectively communicated with the power supply device are arranged in the treatment tank 5, a liquid inlet 8 and a liquid outlet 9 are respectively arranged at two ends of the treatment tank 5, the liquid inlet 8 is communicated with the liquid absorption pump 4, the liquid outlet 9 is communicated with the membrane treatment tank 3, the treatment tank 5 is provided with an overflow tank 10 and an electrochemical tank 11, the overflow tank 10 is communicated with the liquid inlet 8 and is separated from the electrochemical tank 11 through an overflow plate 12, the liquid absorption pump 4 is connected with the power supply device and is communicated with the leachate concentration tank 1, the membrane treatment tank 3 comprises a pressure pump 13 and a membrane treatment tank, a purified water outlet 15, a concentrated water outlet 16, a high-pressure liquid inlet 14 communicated with a pressure pump 13, the pressure pump 13 connected with a power supply device and communicated with the liquid outlet 9, a suction pump 17 arranged at the purified water outlet 15, the suction pump 17 connected with the power supply device, and a control device connected with the power supply device;

the cathode plates 6 and the anode plates 7 are arranged in the electrochemical cell 11 in a staggered and parallel manner, a 10-15 cm interval is arranged between the cathode plates 6 and the anode plates 7, two groups of water level sensors 18 are arranged in the electrochemical cell 11, one group of water level sensors 18 are arranged above the upper sides of the cathode plates 6 and the anode plates 7, the other group of water level sensors 18 are arranged above the lower sides of the cathode plates 6 and the anode plates 7, and the water level sensors 18 are connected with a control device;

a concentrated water outlet 16 of the membrane treatment tank is provided with a concentrated water circulating pump 19, and the concentrated water circulating pump 19 is provided with a circulating pipeline 20 communicated with the overflow tank 10;

the anode plate 7 adopts a lead dioxide plate, and the power supply device comprises a diesel generator.

The specific use process is that the garbage percolate is sucked into an overflow tank 10 in a treatment tank 5 of an electrochemical treatment tank 2 from a percolate concentration tank 1 by a water suction pump, the garbage percolate can overflow into an electrochemical pool 11 (a cathode plate 6 and an anode plate 7 region) of the treatment tank 5 after the water level in the overflow tank 10 is higher than an overflow plate 12, after the water level in the overflow tank 10 is subjected to sufficient and effective electrochemical treatment, organic matters, bacteria and the like in a water body are preliminarily treated, the water is pumped into a membrane treatment tank 3 from a liquid outlet 9 for filtration treatment, purified water filtered by a membrane treatment device of the membrane treatment tank 3 is pumped out by a suction pump 17 for discharge, and concentrated water is directly discharged into a sewage discharge pipeline or pumped into the overflow tank 10 by a concentrated water circulating pump 19 to be treated together with the garbage percolate;

two sets of water level sensors 18 monitor the water level in the electrochemical cell 11, and the control device does not supply power to the cathode plate 6 and the anode plate 7 when the water level is lower, supplies power to the cathode plate 6 and the anode plate 7 after the water level reaches the upper part of the lower side of the cathode plate 6 and the anode plate 7, opens the pressure pump 13 after the water level reaches the upper part of the upper side of the cathode plate 6 and the anode plate 7, pumps liquid into the membrane treatment box 3 for treatment, and makes the liquid inlet and outlet of the electrochemical box 2 reach balance.

Claims

1. The electrochemical treatment device for the garbage leachate is characterized by comprising a control device and a power supply device, and further comprising a leachate concentration tank, an electrochemical treatment tank and a membrane treatment tank which are communicated with each other from front to back, wherein the electrochemical treatment tank comprises a liquid absorption pump and a treatment tank, a plurality of negative plates and positive plates which are respectively communicated with the power supply device are arranged in the treatment tank, a liquid inlet and a liquid outlet are respectively arranged at two ends of the treatment tank, the liquid inlet is communicated with the liquid absorption pump, the liquid outlet is communicated with the membrane treatment tank, the treatment tank is provided with an overflow tank and an electrochemical tank, the overflow tank is communicated with the liquid inlet and is separated from the electrochemical tank through the overflow plate, the liquid absorption pump is connected with the power supply device and is communicated with the leachate concentration tank, the membrane treatment tank comprises a pressure pump and a membrane treatment tank, the membrane treatment tank is internally provided with the membrane treatment device, and is provided with a, The high-pressure liquid inlet is communicated with a pressure pump, the pressure pump is connected with a power supply device and communicated with a liquid outlet, a suction pump is arranged at the water purification outlet and connected with the power supply device, and the control device is connected with the power supply device.

2. The electrochemical treatment device for landfill leachate according to claim 1, wherein the negative plates and the positive plates are arranged in the electrochemical cell in a staggered and parallel arrangement, the negative plates and the positive plates are spaced by 10-15 cm, two sets of water level sensors are arranged in the electrochemical cell, one set of water level sensors is arranged above the upper sides of the negative plates and the positive plates, the other set of water level sensors is arranged above the lower sides of the negative plates and the positive plates, and the water level sensors are connected with the control device.

3. The electrochemical treatment device for landfill leachate according to claim 1, wherein the membrane treatment tank concentrate outlet is provided with a concentrate circulating pump, and the concentrate circulating pump is provided with a circulating pipeline communicated with the overflow tank.

4. The electrochemical treatment device for landfill leachate according to claim 1, wherein the anode plate is a lead dioxide plate, and the power supply device comprises a diesel generator.