Background
During the stacking and burying process of garbage, due to the biochemical degradation effects of compaction, fermentation and the like, a high-concentration liquid with organic or inorganic components is generated under the seepage action of precipitation and underground water, and the high-concentration liquid is called as garbage leachate, also called as leachate. Factors influencing the generation of percolate are many, and mainly include rainfall condition of a garbage stacking and burying area, the property and the composition of garbage, seepage-proofing treatment condition of a landfill site, hydrogeological conditions of the site and the like.
The chemical oxidation process can effectively eliminate the pollutants without generating chemical sludge in which the pollutants formed in the flocculation precipitation process are concentrated. The process is commonly used for the disinfection treatment of wastewater, but is rarely used for the oxidation of organic matters, mainly due to the economic problem caused by high dosage of the added medicament. For some refractory organic contaminants in leachate, chemical oxidation processes are contemplated. The commonly used chemical oxidants comprise chlorine, calcium hypochlorite, potassium permanganate, ozone and the like, when the ozone is used as the oxidant, the problem of residual sludge is solved, and the acid leachate containing a large amount of organic acid needs higher dosage and longer contact time correspondingly because the organic acid is ozone-resistant.
The existing percolate oxidation device has the defects that the contact between ozone and landfill leachate is insufficient in the oxidation process, so that the oxidation effect of the landfill leachate is poor, the utilization rate of the ozone is low, and the sewage after oxidation treatment is direct. Therefore, there is a need for an advanced oxidation treatment apparatus for landfill leachate concentrate that can solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-grade oxidation treatment device of landfill leachate concentrate can make fully contact between ozone and the landfill leachate, improves the utilization ratio of ozone, prevents that the result after the oxidation treatment from causing secondary pollution to external environment.
The utility model provides a following technical scheme:
an advanced oxidation treatment device for landfill leachate concentrated solution comprises a shell, wherein a filter box is arranged on the shell, a liquid inlet, a liquid outlet and a sewage discharge outlet are formed in the filter box, the liquid outlet is communicated with the shell, and a filter plate is arranged on the inner side wall of the filter box; a vent pipe penetrating through the upper end of the shell is arranged in the shell, a first fixed pipe and a second fixed pipe are respectively arranged at two ends of the vent pipe, the first fixed pipe and the second fixed pipe are rotatably connected with the shell, and the outer side wall of the vent pipe is rotatably connected with the inner side walls of the first fixed pipe and the second fixed pipe; an outer surrounding plate is arranged on the outer side of the vent pipe, an inner surrounding plate is arranged between the outer surrounding plate and the vent pipe, vent cavities are arranged in the outer surrounding plate and the inner surrounding plate, and vent holes are formed in the side wall of each vent cavity; a first connecting pipe is arranged between the peripheral plate and the first fixed pipe, a second connecting pipe is arranged between the peripheral plate and the second fixed pipe, and a third connecting pipe is arranged between the inner surrounding plate and the vent pipe; the upper end and the lower end of the vent pipe are respectively provided with a first connecting hole and a second connecting hole, the first connecting hole is arranged at the end part of the first connecting pipe, and the second connecting hole is arranged at the end part of the second connecting pipe; the shell is provided with an ozone generator, a communicating pipe is arranged between the ozone generator and the vent pipe, and the communicating pipe is rotatably connected with the vent pipe; the shell is provided with a motor, and the first fixed pipe and the vent pipe rotate through the motor; the device is characterized in that a liquid outlet pipe is arranged on the shell, one end of the liquid outlet pipe is communicated with the shell, a precipitation device is arranged at the other end of the liquid outlet pipe, and an outlet is formed in the precipitation device.
Preferably, the sediment device comprises baffle-box and setting tank, the setting tank is located the below of baffle-box, the setting tank with be equipped with the bracing piece between the baffle-box, the both ends of bracing piece respectively with the setting tank with the baffle-box meets, the baffle-box with the lateral wall of setting tank all is equipped with the short slab, the height that highly is less than peripheral lateral wall of short slab.
Preferably, a drainage rod is arranged between the buffer tank and the settling tank, and two ends of the drainage rod are respectively connected with the short plate and the side wall of the buffer tank.
Preferably, the lower end of the drainage rod and the upper end of the side wall of the settling box are respectively provided with a first slope surface and a second slope surface which are matched with each other, and the upper end of the first slope surface is connected with the middle part of the second slope surface.
Preferably, the buffer tank with be equipped with the water pump between the drain pipe, the water inlet of water pump with the drain pipe meets, the delivery port of water pump with the lateral wall of buffer tank meets.
Preferably, the communicating pipe with be equipped with a sealed section of thick bamboo between the breather pipe, the inside wall of a sealed section of thick bamboo with the lateral wall of breather pipe rotates and is connected, the communicating pipe with the tip of breather pipe all is equipped with the ring protruding, the inside wall of a sealed section of thick bamboo be equipped with the protruding assorted annular of ring, the tank bottom of annular with on the breather pipe the ring protruding rotates and is connected.
Preferably, the first fixing rod and the outer side wall of the vent pipe are respectively provided with a first gear and a second gear, a third gear is arranged on a rotating shaft of the motor and is arranged between the first gear and the second gear, and the third gear is meshed with the first gear and the second gear.
Preferably, the outer side wall of the first fixed pipe and the outer side wall of the lower end of the second fixed pipe are provided with fixed rings, the shell is provided with fixed grooves matched with the fixed rings, and the groove bottoms of the fixed grooves are rotationally connected with the fixed rings.
Preferably, the first connecting holes and the second connecting holes are arranged in a vertically opposite staggered manner.
The utility model discloses a profitable effect:
the utility model discloses be equipped with the rose box on the casing, be equipped with inlet, liquid outlet and drain on the rose box, the liquid outlet communicates with each other with the casing, the inside wall of rose box is equipped with the filter, the rose box has played the filtering action to the filtration liquid that gets into in the casing;
a vent pipe penetrating the upper end of the shell is arranged in the shell, a first fixing pipe and a second fixing pipe are respectively arranged at the two ends of the vent pipe, the first fixing pipe and the second fixing pipe are rotatably connected with the shell, the outer side wall of the vent pipe is rotatably connected with the inner side walls of the first fixing pipe and the second fixing pipe, the first fixing pipe and the second fixing pipe enable the vent pipe to rotate more stably, a peripheral plate is arranged at the outer side of the vent pipe, an inner surrounding plate is arranged between the peripheral plate and the vent pipe, vent cavities are respectively arranged in the peripheral plate and the inner surrounding plate, the side wall of the vent cavity is provided with vent holes, a first connecting pipe is arranged between the peripheral plate and the first fixing pipe, a second connecting pipe is arranged between the peripheral plate and the second fixing pipe, a third connecting pipe is arranged between the inner surrounding plate and the vent pipe, a first connecting hole and a second connecting hole are respectively arranged at, the second connecting hole is arranged at the end part of the second connecting pipe, the first fixing pipe and the second fixing pipe drive the peripheral plate to rotate through the first connecting pipe and the second connecting pipe, the vent pipe drives the inner peripheral plate to rotate through the third connecting pipe, the third connecting pipe is convenient for the gas in the vent pipe to pass through the vent cavity of the inner peripheral plate, the first connecting hole is convenient for the gas in the vent pipe to pass through the first connecting pipe into the vent cavity of the peripheral plate, the second connecting hole is convenient for the gas in the vent pipe to pass through the second connecting pipe into the vent cavity of the peripheral plate, the gas is discharged through the vent hole to be in contact reaction with the percolate, the peripheral plate and the inner peripheral plate enable the gas in the vent pipe to be in full contact with the percolate, the effect of stirring the percolate is achieved, and;
the shell is provided with an ozone generator, a communicating pipe is arranged between the ozone generator and the vent pipe, the communicating pipe is rotatably connected with the vent pipe, the shell is provided with a motor, the first fixed pipe and the vent pipe rotate through the motor, the ozone generator conveys ozone into the vent pipe through the communicating pipe, and the motor is convenient for the first fixed pipe and the vent pipe to rotate;
be equipped with the drain pipe on the casing, the one end of drain pipe communicates with each other with the casing, and the other end of drain pipe is equipped with the sediment device, is equipped with the export on the sediment device, and the liquid after the sediment device is to the reaction deposits, and the result after preventing oxidation treatment causes secondary pollution to external environment.
Detailed Description
As shown in fig. 1 to 7, an advanced oxidation treatment device for landfill leachate concentrate comprises a shell 1, wherein a filter tank 2 is arranged at the upper end of the shell 1, a liquid inlet 3 and a liquid outlet 4 are respectively arranged at the upper end and the lower end of the filter tank 2, the liquid outlet 4 is communicated with the shell 1, a sewage outlet 5 is arranged on the side wall of the filter tank 2, a filter plate 44 is arranged on the inner side wall of the filter tank 2, the edge of the filter plate 44 is connected with the filter tank 2, one end of the filter plate 44 is fifteen centimeters lower than the other end of the filter plate 44, one end of the filter plate 44 is arranged at the sewage outlet 5, the filter plate 44 is convenient for discharging filter residues from the sewage outlet 5, and has a; a vent pipe 6 penetrating through the upper end of the shell 1 is arranged in the shell 1 along the vertical direction, a first fixing pipe 7 and a second fixing pipe 8 are respectively arranged at two ends of the vent pipe 6, the first fixing pipe 7 and the second fixing pipe 8 are rotatably connected with the shell 1, the outer side wall of the vent pipe 6 is rotatably connected with the inner side walls of the first fixing pipe 7 and the second fixing pipe 8, fixing rings 39 are arranged on the outer side wall of the first fixing pipe 7 and the outer side wall of the lower end of the second fixing pipe 8, fixing grooves 40 matched with the fixing rings 39 are arranged at the upper end and the lower end of the shell 1, the groove bottom of each fixing groove 40 is rotatably connected with the corresponding fixing ring 39, and the fixing rings 39 and the fixing grooves 40 enable the first fixing pipe 7 and the; the outer side of the vent pipe 6 is provided with an outer peripheral plate 9, an inner peripheral plate 10 is arranged between the outer peripheral plate 9 and the vent pipe 6, the end faces of the outer peripheral plate 9 and the inner peripheral plate 10 are arc-shaped, vent cavities 11 are arranged in the outer peripheral plate 9 and the inner peripheral plate 10, the side wall of each vent cavity 11 is provided with a vent hole 12, gas in the vent pipe 6 is contacted with percolate through the vent holes 12, the contact area between the outer peripheral plate 9 and the inner peripheral plate 10 and the percolate is increased, and the oxidation efficiency of the percolate is improved; four first connecting pipes 13 are arranged between the peripheral plate 9 and the first fixed pipe 7, the four first connecting pipes 13 are sequentially vertical to each other, two ends of each first connecting pipe 13 are respectively connected with the upper end of the peripheral plate 9 and the side wall of the first fixed pipe 7, four second connecting pipes 14 are arranged between the peripheral plate 9 and the second fixed pipe 8, the four second connecting pipes 14 are sequentially vertical to each other, two ends of each second connecting pipe 14 are respectively connected with the lower end of the peripheral plate 9 and the side wall of the second fixed pipe 8, and four third connecting pipes 15 are respectively arranged between two ends of the inner peripheral plate 10 and two ends of the vent pipe 6; the four third connecting pipes 15 are sequentially perpendicular to each other, two ends of each third connecting pipe 15 are respectively connected with the end of the inner surrounding plate 10 and the side wall of the vent pipe 6, one ends of the first connecting pipe 13, the second connecting pipe 14 and the third connecting pipe 15 are communicated with the vent chamber 11, the upper end and the lower end of the vent pipe 6 are respectively provided with a first connecting hole 16 and a second connecting hole 17, the first connecting hole 16 is arranged at the end of the first connecting pipe 13, the second connecting hole 17 is arranged at the end of the second connecting pipe 14, the first connecting hole 16 and the second connecting hole 17 are vertically and reversely staggered, the first connecting hole 16 and the second connecting hole 17 enable the outer surrounding plate 9 to be always filled with gas, the first fixed pipe 7 and the second fixed pipe 8 drive the outer surrounding plate 9 to rotate through the first connecting pipe 13 and the second connecting pipe 14, the vent pipe 6 drives the inner surrounding plate to rotate through the third connecting pipe 15, the third connecting pipes 15 facilitate the gas in the vent pipe 6 to pass, the first connecting hole 16 is convenient for the gas in the vent pipe 6 to be introduced into the vent cavity 11 of the peripheral plate 9 through the first connecting pipe 13, the second connecting hole 17 is convenient for the gas in the vent pipe 6 to be introduced into the vent cavity of the peripheral plate 9 through the second connecting pipe 14, the gas is discharged through the vent hole 12 to be in contact reaction with the percolate, the peripheral plate 9 and the inner peripheral plate 10 enable the gas in the vent pipe 6 to be in full contact with the percolate, the effect of stirring the percolate is achieved, and the oxidation effect of the percolate is improved.
The side wall of the upper end of the shell 1 is provided with an ozone generator 18, a communicating pipe 19 is arranged between the ozone generator 18 and the upper end of the vent pipe 6, a sealing cylinder 33 is arranged between the communicating pipe 19 and the vent pipe 6, the inner side wall of the sealing cylinder 33 is rotatably connected with the outer side wall of the vent pipe 6, annular protrusions 34 are arranged at the end parts of the communicating pipe 19 and the vent pipe 6, an annular groove 35 matched with the annular protrusion 34 is arranged on the inner side wall of the sealing cylinder 33, the bottom of the annular groove 35 is rotatably connected with the annular protrusion 34 on the vent pipe 6, and the sliding protrusion 35 and the annular groove 35 enable the relative rotation between the vent pipe 6 and the; the upper end of casing 1 is equipped with motor 20, first dead lever 13 is equipped with first gear 36 and second gear 37 respectively along the horizontal direction with the lateral wall of breather pipe 6, be equipped with third gear 38 along vertical direction in motor 20's the pivot, third gear 38 is located between first gear 36 and the second gear 37, third gear 38 is connected with first gear 36 and the meshing of second gear 37, motor 20 drives breather pipe 6 and the rotation of first fixed pipe 7, and rotation direction is opposite, improve the stirring effect of filtration liquid.
The liquid outlet pipe 43 is arranged on the side wall of the lower end of the shell 1, one end of the liquid outlet pipe 43 is communicated with the shell 1, the other end of the liquid outlet pipe 43 is provided with the precipitation device 21, the precipitation device 21 is composed of a buffer tank 23 and two precipitation tanks 24, the two precipitation tanks 24 are arranged below the buffer tank 23, two support rods 25 are arranged between the precipitation tanks 24 and the buffer tank 23 and between the two precipitation tanks 24 along the vertical direction, two ends of the two support rods 25 are respectively connected with the precipitation tanks 24 and the buffer tank 23, two ends of the other two support rods 25 are respectively connected with the two precipitation tanks 24, the vertically arranged precipitation device 21 can save floor space, the support rods 25 play a role in supporting the buffer tank 23 and the precipitation tanks 24, the buffer tank 23 can slow down the flow rate of liquid and play a role in buffering, the liquid in the precipitation tanks 24 flows slowly, and the precipitation effect is improved; the side walls of the buffer tank 23 and the settling tank 24 are provided with short plates 26, the height of each short plate 26 is five centimeters lower than that of the peripheral side wall, and the short plates are convenient for liquid to flow out; the drainage rods 27 are arranged between the buffer tank 23 and the sedimentation tank 24 and between the two sedimentation tanks 24, two ends of each drainage rod 27 are respectively connected with the short plate 26 and the side wall of the buffer tank 23, the drainage rods 27 are arranged at two ends of each sedimentation tank 24, and the drainage rods 27 are beneficial to liquid flowing into the sedimentation tanks 24 from the buffer tanks 23 and flowing between the two buffer tanks 24; the lower end of the drainage rod 27 and the upper end of the side wall of the settling tank 24 are respectively provided with a first slope surface 28 and a second slope surface 29 which are matched with each other, the upper end of the first slope surface 28 is connected with the middle part of the second slope surface 29, and the first slope surface 28 and the second slope surface 29 can prevent liquid from flowing out of the settling tank 24; the side walls of the settling tank 24 and the buffer tank 23 are provided with an outlet 22, the outlet 22 is provided with a collecting pipe 42, the side walls of the outlet 22 and the collecting pipe 42 are the same, and the collecting pipe 42 is convenient for discharging liquid in the settling device 21; the outlet 22, the liquid inlet 3 and the sewage draining exit 5 are all provided with valves 41, and the valves 41 can control the liquid circulation; a water pump 30 is arranged between the buffer tank 23 and the liquid outlet pipe 43, a water inlet 31 of the water pump 30 is connected with the liquid outlet pipe 43, a water outlet 32 of the water pump 30 is connected with the side wall of the buffer tank 23, and the water pump 30 is convenient for conveying liquid in the shell 1 into the sedimentation device 21.
The utility model discloses a working method: the leachate enters the filter tank 2 from the liquid inlet 3, flows into the shell 1 after being filtered by the filter plate 44, the ozone generator 18 injects ozone into the vent pipe 6, the motor 20 drives the first fixed pipe 7 and the vent pipe 6 to rotate, the first fixed pipe 7 and the vent pipe 6 respectively drive the peripheral plate 9 and the inner tail plate 10 to rotate in opposite directions, the peripheral plate 9 and the inner tail plate 10 enable gas in the vent pipe 6 to be fully contacted with the leachate, the effect of stirring the leachate is achieved, the oxidation effect of the leachate is improved, the oxidized liquid enters the precipitation device 21 through the water pump 30, the liquid flows into the precipitation tank 24 from the buffer tank 23 through the drainage rod 27 to be precipitated, and the precipitated liquid is finally discharged through the collecting pipe 42.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.