CN211814034U - Leachate treatment device for garbage transfer station - Google Patents

Abstract

The utility model provides a rubbish transfer station filtration liquid processing apparatus belongs to sewage treatment technical field, including connecting gradually and forming circulation circuit add medicine coagulating basin and air supporting machine, it still links to each other with equalizing basin and the little electrolysis tower of iron carbon respectively to add medicine coagulating basin, air supporting machine one side is provided with the air compressor machine, dissolves the gas pitcher and dissolves the air pump, the air compressor machine, dissolve gas pitcher and air supporting machine between the order connect, dissolve the gas pitcher, dissolve the order connection between air pump and the air supporting machine, little electrolysis tower one side of iron carbon is provided with biochemical treatment unit. The embodiment of the utility model provides a solved the problem that little water yield does not have suitable treatment facility, the device realizes miniaturization and big water yield, realizes with the concatenation of main equipment, applicable rubbish transfer station filtration liquid in any scale is handled, can adopt supporting full automatic control system and corresponding inductor simultaneously, whole automatic operation has investment and running cost low, take up an area of less, the reliable and stable advantage of treatment effect.

Description

Leachate treatment device for garbage transfer station

Technical Field

The utility model belongs to the technical field of sewage treatment, specifically a rubbish transfer station filtration liquid processing apparatus.

Background

Along with the development of economy and the promotion of urbanization process in China, the quantity of garbage is increased, garbage disposal sites are far away from urban areas, and garbage transportation modes are from direct transportation to uncompressed transportation and to current compressed transportation. The farther a refuse landfill is built, the more the refuse landfill is built, the more and more transfer stations are used for compressing and transferring the refuse, the more and more transfer stations are ideal, and the refuse transfer stations inevitably generate refuse leachate containing a large amount of pollutants, so that the peripheral environment is seriously polluted, not only the underground water, the surface water source and the soil are polluted, but also the survival of peripheral animals and plants is threatened, and the physical health of the masses of people is threatened. Therefore, landfill leachate must be effectively treated to minimize its environmental impact.

The traditional landfill leachate treatment device generally adopts a biochemical treatment and membrane treatment or simple biochemical treatment route, and although the treatment effect is still good, the traditional landfill leachate treatment device has a plurality of defects: larger occupied area, higher operating cost and higher operating requirement, and the traditional landfill leachate treatment can not meet the requirements. Particularly, the characteristics of the landfill leachate of the transfer station determine that the landfill leachate is not suitable for a treatment route which occupies large space and has long treatment time. Therefore, a small and efficient treatment system must be developed to solve the problem of the leachate in the transfer station.

SUMMERY OF THE UTILITY MODEL

The technical problem who solves to above-mentioned prior art, the utility model provides a rubbish transfer station filtration liquid processing apparatus is provided, adopt materialization, biochemistry, membrane filtration allies oneself with the technique and has independently researched and developed a rubbish transfer station filtration liquid processing apparatus, it has not only integrated the advantage of materialization processing high concentration but also integrated the stable efficient advantage of biochemical treatment, still concentrated the membrane filtration principle, can effectively solve the organic waste water of this kind of high concentration of rubbish transfer station filtration liquid, difficult degradation, high grease.

In order to solve the technical problem, the utility model provides a following technical scheme:

a garbage transfer station leachate treatment device comprises a dosing coagulation tank and an air floatation machine which are sequentially connected and form a circulation loop, wherein the dosing coagulation tank is further respectively connected with an adjusting tank and an iron-carbon micro-electrolysis tower, one side of the air floatation machine is provided with an air compressor, a dissolved air tank and a dissolved air pump, the air compressor, the dissolved air tank and the air floatation machine are sequentially connected, the dissolved air tank, the dissolved air pump and the air floatation machine are sequentially connected, and one side of the iron-carbon micro-electrolysis tower is provided with a biochemical treatment unit;

the biochemical treatment unit comprises a first-stage AO biochemical system anoxic tank, a first-stage AO biochemical system aerobic tank, a second-stage AO biochemical system anoxic tank, a second-stage AO biochemical system aerobic tank, a clear water tank and a fan, wherein the first-stage AO biochemical system anoxic tank, the first-stage AO biochemical system aerobic tank, the second-stage AO biochemical system anoxic tank, the second-stage AO biochemical system aerobic tank and the fan are sequentially connected to form a circulation loop, the second-stage AO biochemical system aerobic tank is connected with the clear water tank, and a membrane assembly is arranged inside the second-stage AO biochemical system aerobic tank.

As a further improvement of the utility model: and a slag scraping machine is arranged at the upper part of the air floatation machine.

As a further improvement of the present invention: the iron-carbon micro-electrolysis tower adopts corundum bottom-penetrating hard aeration.

As a further improvement of the present invention: the iron-carbon micro-electrolysis tower is made of organic glass.

Compared with the prior art, the beneficial effects of the utility model are that:

the embodiment of the utility model provides a solved the problem that little water yield does not have suitable treatment facility, the device realizes miniaturization and big water yield, realizes with the concatenation of main equipment, applicable rubbish transfer station filtration liquid in any scale is handled, can adopt supporting full automatic control system and corresponding inductor simultaneously, whole automatic operation has investment and running cost low, take up an area of less, the reliable and stable advantage of treatment effect.

Drawings

Fig. 1 is a schematic structural diagram of a leachate treatment apparatus of a garbage transfer station.

In the figure: 1-regulating tank, 2-dosing coagulation tank, 3-air compressor, 4-dissolved air tank, 5-dissolved air pump, 6-air floatation machine, 7-slag scraper, 8-iron-carbon micro-electrolysis tower, 9-blower, 10-first grade AO biochemical system anoxic tank, 11-first grade AO biochemical system aerobic tank, 12-second grade AO biochemical system anoxic tank, 13-second grade AO biochemical system aerobic tank, 14-membrane module and 15-clear water tank.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1, the embodiment provides a leachate treatment apparatus for a garbage transfer station, including a dosing coagulation tank 2 and an air flotation machine 6 connected in sequence and forming a circulation loop, where the dosing coagulation tank 2 is further connected to an adjusting tank 1 and an iron-carbon micro-electrolysis tower 8, an air compressor 3, a dissolved air tank 4 and an air dissolving pump 5 are disposed on one side of the air flotation machine 6, the air compressor 3, the dissolved air tank 4 and the air flotation machine 6 are connected in sequence, the dissolved air tank 4, the dissolved air pump 5 and the air flotation machine 6 are connected in sequence, a biochemical treatment unit is disposed on one side of the iron-carbon micro-electrolysis tower 8, and specifically, the biochemical treatment unit includes a primary AO biochemical system anoxic tank 10, a primary AO biochemical system aerobic tank 11, a secondary AO biochemical system anoxic tank 12, a secondary AO biochemical system aerobic tank 13, a clear water tank 15 and a fan 9, and the primary AO biochemical system anoxic tank 10, the secondary, The primary AO biochemical system aerobic pool 11, the secondary AO biochemical system anoxic pool 12, the secondary AO biochemical system aerobic pool 13 and the fan 9 are sequentially connected to form a circulation loop, the secondary AO biochemical system aerobic pool 13 is connected with the clear water tank 15, and a membrane assembly 14 is arranged in the secondary AO biochemical system aerobic pool 13.

Leachate in the leachate collecting tank of the garbage transfer station is pumped into a dosing coagulation tank 2 through a lifting pump, leachate mixed with dosing is pumped into an air flotation machine 6 through the lifting pump, clear water after solid-liquid separation overflows into an iron-carbon micro-electrolysis tower 8 subsequently, the leachate after physical and chemical treatment sequentially enters a first-stage AO biochemical anoxic tank 10, a first-stage AO biochemical system aerobic tank 11, a second-stage AO biochemical system anoxic tank 12 and a second-stage AO biochemical system aerobic tank 13, and meanwhile, a membrane assembly 14 is installed inside the second-stage AO biochemical system aerobic tank 13, effluent after biochemical treatment is pumped and discharged to a device clear water tank 15 through a self-priming pump, and water of the clear water tank 15 is discharged up to the standard.

And a slag scraper 7 is arranged at the upper part of the air floatation machine 6.

A leachate treatment process based on the garbage transfer station comprises the following steps:

(1) introducing the leachate of the garbage transfer station into a water quality adjusting tank 1, controlling the hydraulic retention time of the material to be more than or equal to 8 hours, completing water quality adjustment, then pumping the leachate into a dosing coagulation tank 2, adding a flocculating agent, uniformly dosing in the flocculation tank, and facilitating the air floatation of the rear section;

(2) introducing the material added with the flocculating agent into an air floatation machine 6 for air floatation, wherein a large amount of organic matters such as grease, scum and solid suspended matters in the percolate are formed into scum which is removed by a scum scraping machine 7 by the air floatation principle, water distribution is forced, water inlet and outlet are static, adhesion of micro bubbles and flocs occurs in the whole air floatation separation process including a contact area, the scum is discharged instantly, water body disturbance is small, the effluent suspended matters are low, the slag discharging solid content is high, and supernatant after air floatation enters an iron-carbon micro-electrolysis tower 8;

(3) introducing the supernatant fluid of the air flotation into an iron-carbon micro-electrolysis tower 8, forming a galvanic cell to treat the wastewater by using a metal corrosion principle method, and electrolyzing the wastewater by using a 1.2V potential difference generated by a micro-electrolysis material filled in the wastewater under the condition of no power supply so as to achieve the purpose of degrading organic pollutants, wherein more than 50 percent of COD (chemical oxygen demand) can be removed, and the water filtered by the iron-carbon micro-electrolysis tower 8 enters a biochemical treatment unit;

(4) the water filtered by the iron-carbon micro-electrolysis tower 8 enters a first-stage AO biochemical system anoxic tank 10 for primary biological denitrification and denitrification, nitrate nitrogen in the wastewater is converted into nitrogen under the action of denitrifying bacteria and is removed from the water, then the nitrogen enters a first-stage AO biochemical system aerobic tank 11 for aeration, the decomposition of organic pollutants and the nitrification of ammonia nitrogen are carried out, and the nitrified water is provided with a reflux device for refluxing the nitrified liquid to the front section of the first-stage AO biochemical system anoxic tank 10;

(5) the effluent of the first-level AO biochemical system aerobic pool 11 enters a second-level AO biochemical system anoxic pool 12, biological denitrification and denitrification are carried out again, nitrate nitrogen in the wastewater is converted into nitrogen under the action of denitrifying bacteria, the nitrogen is removed from the water and then enters a second-level AO biochemical system aerobic pool 13, and decomposition and nitrification of organic pollutants are carried out in the second-level AO biochemical system aerobic pool 13;

(6) the membrane module 14 is used for sucking water to the clean water tank 15 through a self-priming pump under negative pressure, filtered water in the clean water tank 15 is standard-reaching discharge water, overflowing and discharging to a drainage pipe network, the membrane module 14 is used for performing water production discharge in an on-off alternative mode through the self-priming pump, backwashing is set, and the clean water tank 15 is used for performing periodic backwashing to maintain membrane flux.

Specifically, the membrane module 14 performs water production discharge in a mode of starting for 8min and stopping for 2min through a self-priming pump.

Specifically, the hydraulic retention time of the control material is 60H.

The embodiment of the utility model provides an in, adopt novel shallow layer air supporting principle, it changes the surface state into and intakes, developments play water is the developments intake, static play water, utilize "zero speed" principle, make the flotation body float to the surface of water perpendicularly in the environment of relative stillness, the come-up distance reduces to minimum, and not influenced by the velocity of flow of leaving water, the deep only about 450mm that needs of theoretical pond, the detention time of sewage in the air supporting only needs 3-5 minutes, equipment volume reduces by a wide margin, the bubble distribution that adds is even, no air floatation blind area, scrape sediment machine 7 advantages such as little to the water disturbance, the purification rate improves by a wide margin, the suspended solid clearance can reach more than 90% -99.5%, COD's clearance can reach 65% -90%.

The embodiment of the utility model provides a solved the problem that little water yield does not have suitable treatment facility, the device realizes miniaturization and big water yield, realizes with the concatenation of main equipment, applicable rubbish transfer station filtration liquid in any scale is handled, can adopt supporting full automatic control system and corresponding inductor simultaneously, whole automatic operation has investment and running cost low, take up an area of less, the reliable and stable advantage of treatment effect.

Example 2

Please refer to fig. 1, a landfill transfer station leachate treatment device, this embodiment compares in embodiment 1, the embodiment of the utility model provides an, little electrolysis tower 8 of iron carbon adopts the bottom to wear corundum stereoplasm aeration, and little electrolysis tower 8 air water of iron carbon is than being 3: 1, and the packing percentage of packing 60%, reaction time 2h adopt organic glass as little electrolysis tower body of iron carbon, can more conveniently directly perceived maintenance and the operation of carrying on the later stage.

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 (4)

1. A leachate treatment device for a garbage transfer station comprises a dosing coagulation tank (2) and an air floatation machine (6) which are sequentially connected and form a circulation loop, wherein the dosing coagulation tank (2) is further respectively connected with an adjusting tank (1) and an iron-carbon micro-electrolysis tower (8), one side of the air floatation machine (6) is provided with an air compressor (3), a dissolved air tank (4) and an dissolved air pump (5), the air compressor (3), the dissolved air tank (4) and the air floatation machine (6) are sequentially connected, the dissolved air tank (4), the dissolved air pump (5) and the air floatation machine (6) are sequentially connected, and one side of the iron-carbon micro-electrolysis tower (8) is provided with a biochemical treatment unit;

the biochemical treatment unit comprises a primary AO biochemical system anoxic tank (10), a primary AO biochemical system aerobic tank (11), a secondary AO biochemical system anoxic tank (12), a secondary AO biochemical system aerobic tank (13), a clear water tank (15) and a fan (9), wherein the primary AO biochemical system anoxic tank (10), the primary AO biochemical system aerobic tank (11), the secondary AO biochemical system anoxic tank (12), the secondary AO biochemical system aerobic tank (13) and the fan (9) are sequentially connected to form a circulation loop, the secondary AO biochemical system aerobic tank (13) is connected with the clear water tank (15), and a membrane assembly (14) is arranged inside the secondary AO biochemical system aerobic tank (13).

2. The leachate treatment plant of the refuse transfer station according to claim 1, wherein a slag scraper (7) is disposed at the upper part of the air flotation machine (6).

3. The landfill leachate treatment plant of claim 1 or 2, wherein the iron-carbon micro-electrolysis tower (8) is aerated by hard bottom-through corundum.

4. The leachate treatment plant of a refuse transfer station according to claim 3, wherein said iron-carbon micro-electrolysis tower (8) is made of organic glass.

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