CN112811717A - Landfill leachate treatment process - Google Patents
Landfill leachate treatment process Download PDFInfo
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- CN112811717A CN112811717A CN202011591611.XA CN202011591611A CN112811717A CN 112811717 A CN112811717 A CN 112811717A CN 202011591611 A CN202011591611 A CN 202011591611A CN 112811717 A CN112811717 A CN 112811717A
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to the technical field of sewage treatment, and discloses a landfill leachate treatment process, which comprises the following steps: the device comprises a guide pipeline, a grid well, an adjusting tank, an air floatation device, a multi-stage catalytic reaction system, an anaerobic tank, an aerobic tank, a sedimentation tank, a reaction kettle and a DM sewage treatment device, wherein the water inlet end of the grid well is connected with the guide pipeline, the grid well blocks large particles in sewage, the water inlet end of the adjusting tank is connected with the water outlet end of the grid well, the water inlet end of the air floatation device is connected with the water outlet end of the adjusting tank, the landfill leachate is sequentially treated, so that the COD and the ammonia nitrogen content of the treated landfill leachate are low, the landfill leachate reaches the discharge standard, secondary pollution does not exist, the treatment process has the advantages of high treatment efficiency, stable and standard effluent quality, lower energy consumption, low investment and operation cost, meanwhile, the method has the advantages of simple flow, stable final effluent quality, low content of each parameter, no generation of concentrated solution and good treatment effect of the percolate.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a garbage leachate treatment process.
Background
The landfill leachate is high-concentration organic wastewater which is formed by deducting the saturated water holding capacity of garbage and a soil covering layer from water contained in the garbage in a garbage landfill, rain, snow and water entering the landfill and other water and passing through the garbage layer and the soil covering layer.
The landfill leachate has great difference in components with different regions, industries and landfill time, and has great difference in COD (Chemical Oxygen Demand) and ammonia nitrogen, wherein the COD can reach 90000mg/L, the ammonia nitrogen can reach 1700mg/L, and the landfill leachate has odor, so that the difficulty of operation is increased.
At present, the method for treating the landfill leachate mainly comprises a recharging method, a biological treatment method, a physical treatment method, a land treatment method and the like, although the recharging method reduces COD, however, the degradation of nitrogen-containing compounds increases the total nitrogen concentration by 30%, which is a non-exhaustive treatment method, and during anaerobic treatment, when the load is increased to a certain degree, the removal rate is seriously reduced, the oxidation method of the oxidant needs a large amount of the oxidant, the evaporation distillation has the problems of scaling and scaling, the physical and chemical treatment method comprises a membrane technology, the membrane technology is to intercept pollutants in the wastewater through membrane components such as microfiltration, nanofiltration, ultrafiltration, reverse osmosis and the like, therefore, the aim of purifying water quality is achieved, but membrane components are frequently maintained and replaced, difficult to clean, easy to block, large in treatment capacity fluctuation and high in operation cost, and meanwhile, concentrated water generated by membrane treatment is difficult to treat and easy to generate secondary pollution.
Therefore, most of the existing treatment equipment for the landfill leachate has poor treatment capacity and low efficiency, and the COD, ammonia nitrogen and total phosphorus of the effluent quality cannot reach the discharge standard or have the problem of secondary pollution.
Disclosure of Invention
The invention provides a landfill leachate treatment process, which aims to solve the problems that most of conventional landfill leachate treatment equipment has poor treatment capacity and low efficiency, and COD, ammonia nitrogen and total phosphorus in effluent quality cannot reach the discharge standard or secondary pollution exists.
In order to achieve the above effect, the present application provides a landfill leachate treatment process, including: the system comprises a guide pipeline, a grid well, a regulating tank, an air floatation device, a multi-stage catalytic reaction system, an anaerobic tank, an aerobic tank, a sedimentation tank, a reaction kettle and a DM sewage treatment device;
the water inlet end of the grid well is connected with the guide pipeline, and the grid well blocks large particles in the sewage; the water inlet end of the regulating tank is connected with the water outlet end of the grid well, and the pH value of the sewage is regulated by the regulating tank; the water inlet end of the air floatation device is connected with the water outlet end of the regulating tank, a first booster pump is arranged at the joint of the air floatation device and the regulating tank, and flocculent particles in the sewage are separated by the air floatation device; the water inlet end of the multistage catalytic reaction system is connected with the water outlet end of the air floatation device, a second booster pump is arranged at the joint of the multistage catalytic reaction system and the air floatation device, and the multistage catalytic reaction system is used for carrying out catalytic reaction on sewage; the water inlet end of the anaerobic tank is connected with the water outlet end of the multistage catalytic reaction system, and the anaerobic tank carries out anaerobic degradation on macromolecular organic matters in the sewage so as to complete the denitrification process; the water inlet end of the aerobic tank is connected with the water outlet end of the anaerobic tank, and the aerobic tank is used for degrading solid organic matters in the sewage to complete the nitration process; the water inlet end of the sedimentation tank is connected with the water outlet end of the aerobic tank, and sewage is cleaned and separated by the sedimentation tank; the water inlet end of the reaction kettle is connected with the water outlet end of the sedimentation tank; and the water inlet end of the DM sewage treatment equipment is connected with the water outlet end of the reaction kettle.
Preferably, the grid well comprises: the device comprises a grating, a lead screw module, a guide groove, a hydraulic rod and a frame electromagnet;
the lead screw module set up in the inside of grid well, the grid set up in the inside of grid well, just the both ends of grid with the lead screw module is connected, the guiding groove set up in the inside of grid well, just the guiding groove with grid one end is connected, the hydraulic stem set up in the top of grid well, the frame electro-magnet set up in the flexible of hydraulic stem is served.
Preferably, the air floatation equipment is provided with a salvaging mechanism;
the fishing mechanism includes: the fishing net comprises a supporting frame, a servo motor, a fishing net and a connecting assembly;
the supporting frame set up in the top of air supporting equipment, the top cover of salvaging the net is located supporting frame is last, servo motor set up in the top of salvaging the net, coupling assembling set up in supporting frame is last.
Preferably, the method further comprises the following steps:
the ozone generator is arranged at the joint of the aerobic tank and the sedimentation tank.
Preferably, the multistage catalytic reaction system comprises: the system comprises a catalytic reduction reaction system, a catalytic oxidation reaction system and a neutralization pond catalytic oxidation system;
the water inlet end of the catalytic oxidation reaction system is connected with the water outlet end of the catalytic reduction reaction system, and the water inlet end of the neutralization pond catalytic oxidation system is connected with the water outlet end of the catalytic oxidation reaction system.
Preferably, a sewage discharge mechanism is arranged on the sedimentation tank;
the blowdown mechanism includes: a blow-off pipe, an electromagnetic valve and a third booster pump;
the blow off pipe set up in the bottom of sedimentation tank, the solenoid valve set up in the blow off pipe and the sedimentation tank junction, the third booster pump set up in on the blow off pipe.
Preferably, the reaction kettle comprises: the device comprises a tank body, an access door and a plurality of adsorption bins;
the access door set up in on the lateral wall face of the jar body, just the access door with jar body swing joint, it is a plurality of adsorb the storehouse set up in the inside of the jar body.
Preferably, the DM sewage treatment apparatus comprises: the device comprises a box body, a first pipeline, a second pipeline, a partition plate and a feeding port;
the first pipeline set up in the inside of box, just the first pipeline with the end of intaking of box is connected, the second pipeline cover is located on the first pipeline, just the second pipeline with the first pipeline is linked together, the baffle set up in inside the box, put in mouthful set up in the top of box.
Preferably, the method further comprises the following steps:
the water-resisting pipe is arranged inside the grating well and sleeved on the screw rod module;
the connecting rod, the connecting rod set up in the inside of grid well, connecting rod one end with the lead screw module is connected, the connecting rod other end with the grid is connected.
Preferably, the operation steps are as follows:
s1, leading the sewage to the interior of the grid well through the guide pipeline, and blocking large particles in the sewage through the grid well;
s2, enabling the sewage to flow through a regulating tank, and regulating the water quality, the PH value and the water quantity of the sewage by the regulating tank so as to reduce flow fluctuation of a physical and chemical treatment system;
s3, pumping sewage into an air floatation device by a first booster pump, and floating flocs in the water out of the water surface by using small bubbles to realize solid-liquid separation;
s4, pumping the sewage into a multi-stage catalytic reaction system by a second booster pump to reduce the reaction barrier between the active point of organic matters in the sewage and the molecules of the medicament, and decomposing the pollutants into carbon dioxide, water or micromolecular organic matters;
s5, enabling the sewage to flow through the anaerobic tank, removing part of BOD in the sewage by the anoxic tank, and performing anaerobic degradation on high molecular organic matters in the sewage to finish the denitrification process;
s6, making the sewage flow through the aerobic tank, degrading the solid organic matters in the sewage by the aerobic tank, aerating the sewage and the like to finish the nitrification process;
s7, cleaning and separating the sewage in the sedimentation tank, and adsorbing the sewage flowing through the reaction kettle;
s8, the DM sewage treatment equipment completes advanced treatment on the sewage to complete the landfill leachate treatment process.
The invention provides a landfill leachate treatment process, which comprises the following steps: the system comprises a guide pipeline, a grid well, a regulating tank, an air floatation device, a multi-stage catalytic reaction system, an anaerobic tank, an aerobic tank, a sedimentation tank, a reaction kettle and a DM sewage treatment device; the water inlet end of the grid well is connected with the guide pipeline, and the grid well blocks large particles in the sewage; the water inlet end of the regulating tank is connected with the water outlet end of the grid well, and the pH value of the sewage is regulated by the regulating tank; the water inlet end of the air floatation device is connected with the water outlet end of the regulating tank, a first booster pump is arranged at the joint of the air floatation device and the regulating tank, and flocculent particles in the sewage are separated by the air floatation device; the water inlet end of the multistage catalytic reaction system is connected with the water outlet end of the air floatation device, a second booster pump is arranged at the joint of the multistage catalytic reaction system and the air floatation device, and the multistage catalytic reaction system is used for carrying out catalytic reaction on sewage; the water inlet end of the anaerobic tank is connected with the water outlet end of the multistage catalytic reaction system, and the anaerobic tank carries out anaerobic degradation on macromolecular organic matters in the sewage so as to complete the denitrification process; the water inlet end of the aerobic tank is connected with the water outlet end of the anaerobic tank, and the aerobic tank is used for degrading solid organic matters in the sewage to complete the nitration process; the water inlet end of the sedimentation tank is connected with the water outlet end of the aerobic tank, and sewage is cleaned and separated by the sedimentation tank; the water inlet end of the reaction kettle is connected with the water outlet end of the sedimentation tank; DM sewage treatment device, DM sewage treatment device's the end of intaking with reation kettle's play water end is connected, this landfill leachate treatment process reasonable in design, simple structure, the simple operation of using method is convenient for, through handling landfill leachate in proper order, make landfill leachate COD after handling, ammonia nitrogen content low, reach emission standard, and do not have secondary pollution, this processing technology has the treatment effeciency height, it is stable up to standard to go out water quality of water, the energy consumption is lower, investment and running cost are low advantage, simultaneously, have the flow simple, final play water quality of water is stable, each parameter content is low, no concentrate produces, advantage that leachate treatment effect is good.
Drawings
FIG. 1 is a schematic structural diagram of a landfill leachate treatment process according to an embodiment of the present invention;
FIG. 2 is a front view of a grid well in an embodiment of the present invention;
FIG. 3 is a side view of a grid well in an embodiment of the present invention;
FIG. 4 is a schematic structural view of a fishing mechanism in an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of a reaction vessel in the example of the present invention;
FIG. 6 is a front view of a DM sewage treatment plant in an embodiment of the invention;
FIG. 7 is a top view of a DM sewage treatment plant in an embodiment of the present invention.
In the figure, 1, guide the pipeline; 2. a grid well; 201. a grid; 202. a screw rod module; 203. a guide groove; 204. a hydraulic lever; 205. a frame electromagnet; 206. a riser; 207. a connecting rod; 3. a regulating tank; 4. air floatation equipment; 401. a support frame; 402. a servo motor; 403. a salvage net; 404. a connecting assembly; 5. a multi-stage catalytic reaction system; 501. a catalytic reduction reaction system; 502. a catalytic oxidation reaction system; 503. a neutralization pond catalytic oxidation system; 6. an anaerobic tank; 7. an aerobic tank; 8. a sedimentation tank; 801. a blow-off pipe; 802. an electromagnetic valve; 803. a third booster pump; 9. a reaction kettle; 901. a tank body; 902. an access door; 903. an adsorption bin; 10. DM sewage treatment equipment; 1001. a box body; 1002. a first pipeline; 1003. a second pipeline; 1004. a partition plate; 1005. a throwing port; 11. an ozone generator.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example (b): the invention provides a technical scheme that: according to the attached figures 1-7 of the specification, the scheme is a landfill leachate treatment process, which mainly comprises the following steps: the device comprises a guide pipeline 1, a grid well 2, a regulating tank 3, an air floatation device 4, a multi-stage catalytic reaction system 5, an anaerobic tank 6, an aerobic tank 7, a sedimentation tank 8, a reaction kettle 9 and a DM sewage treatment device 10, wherein the connection relation is as follows:
the water inlet end of the grid well 2 is connected with the guide pipeline 1, the grid well 2 blocks large particles in sewage, the water inlet end of the adjusting tank 3 is connected with the water outlet end of the grid well 2, the pH value of the sewage is adjusted by the adjusting tank 3, the water inlet end of the air floatation device 4 is connected with the water outlet end of the adjusting tank 3, a first booster pump is arranged at the joint of the air floatation device 4 and the adjusting tank 3, flocculent particles in the sewage are separated by the air floatation device 4, the water inlet end of the multistage catalytic reaction system 5 is connected with the water outlet end of the air floatation device 4, a second booster pump is arranged at the joint of the multistage catalytic reaction system 5 and the air floatation device 4, the sewage is subjected to catalytic reaction by the multistage catalytic reaction system 5, the water inlet end of the anaerobic tank 6 is connected with the water outlet end of the multistage catalytic reaction system 5, and the anaerobic tank 6 is used for carrying out anaerobic degradation on macromolecular organic matters, in order to complete the denitrification process, the water inlet end of the aerobic tank 7 is connected with the water outlet end of the anaerobic tank 6, solid organic matters in the sewage are degraded by the aerobic tank 7 so as to complete the nitrification process, the water inlet end of the sedimentation tank 8 is connected with the water outlet end of the aerobic tank 7, the sewage is cleaned and separated by the sedimentation tank 8 and the sedimentation tank 8, the water inlet end of the reaction kettle 9 is connected with the water outlet end of the sedimentation tank 8, and the water inlet end of the DM sewage treatment equipment 10 is connected with the water outlet end of the reaction kettle 9.
Wherein, multistage catalytic reaction system 5 includes: a catalytic reduction reaction system 501, a catalytic oxidation reaction system 502 and a neutralization pond catalytic oxidation system 503;
the water inlet end of the catalytic oxidation reaction system 502 is connected with the water outlet end of the catalytic reduction reaction system 501, and the water inlet end of the neutralization pond catalytic oxidation system 503 is connected with the water outlet end of the catalytic oxidation reaction system 502.
To sum up, know, when using, through leading pipeline 1 with sewage guide to grid well 2 inside, intercept the large granule pollutant in sewage through grid well 2, avoid the pollutant of great granule to enter into next filtration system.
Adjust the quality of water and the water yield of sewage through equalizing basin 3, provide the buffer capacity to the organic matter load, prevent biological treatment system's abrupt change, control pH value, with the quantity of the chemical of reduction neutralization reaction in, reduce the flow fluctuation to physicochemical treatment system, make chemical rate of addition be fit for the quota of charging equipment, when the mill stops production, still can continue to input waste water to biological treatment system, control the waste water discharge to municipal system, in order to alleviate the change of waste water load distribution, prevent that high concentration toxic substance from getting into biological treatment system.
The floc in the water floats out of the water surface through the small bubbles generated in the air floatation device 4, the solid-liquid separation is quickly realized, the sewage is subjected to catalytic reaction through the multistage catalytic reaction system 5, the catalytic reduction reaction system 501 is used for carrying out ring opening and chain scission on pollutants such as multi-bond, multi-carbon, nitro, azo and the like, water molecules are rearranged according to the direction of magnetic lines of force, the reaction barrier of the active point of organic matters and medicament molecules is reduced, and then the catalytic oxidation reaction system 502 is used for carrying out catalytic oxidation reaction on the organic pollutants in the wastewater in an indiscriminate manner, so that the pollutants can be decomposed into carbon dioxide, water or small molecular organic matters; and then enters a homogeneous neutralization pond catalytic oxidation system 503 for further catalytic oxidation, so that the coagulability and settleability of residual water-soluble small molecule pollutants which are difficult to degrade and are in the waste water are improved.
Carry out anaerobic degradation through the polymer organic matter of anaerobism pond 6 in to the sewage, accomplish the digestion process, carry out degradation treatment through the solid organic matter of good oxygen pond 7 in to the sewage to accomplish the nitration process, accomplish the separation and treatment of decontaminating of sewage through sedimentation tank 8, adsorb superfine particulate matter, colourity, poisonous harmful substance and smell in to the sewage through reation kettle 9.
Wherein, grid well 2 includes: the device comprises a grating 201, a screw rod module 202, a guide groove 203, a hydraulic rod 204 and a frame electromagnet 205;
further comprising: the riser 206, the riser 206 is arranged inside the grid well 2, and the riser 206 is sleeved on the screw rod module 202; and the connecting rod 207 is arranged inside the grating well 2, one end of the connecting rod 207 is connected with the lead screw module 202, and the other end of the connecting rod 207 is connected with the grating 201.
The lead screw module 202 is arranged in the grid well 2, the grid 201 is arranged in the grid well 2, two ends of the grid 201 are connected with the lead screw module 202, the guide groove 203 is arranged in the grid well 2, one end of the guide groove 203 is connected with one end of the grid 201, the hydraulic rod 204 is arranged at the top of the grid well 2, and the frame electromagnet 205 is arranged on the telescopic end of the hydraulic rod 204.
To sum up, start lead screw module 202, it reciprocates to drive grid 201 through lead screw module 202, carry out auxiliary stay to grid 201 through guiding groove 203, avoid phenomenons such as skew appearing in the removal in-process, when grid 201 removes to grid well 2 top, start hydraulic stem 204, start frame electro-magnet 205 simultaneously, be connected hydraulic stem 204 and grid 201 through frame electro-magnet 205, when carrying out the treatment of decontaminating to grid 201 surface, adjust grid 201 angle through hydraulic stem 204, thereby empty the processing with its surperficial pollutant, can effectually protect lead screw module 202 through riser 206, avoid lead screw module 202 to be located the sewage, thereby improve lead screw module 202's life.
Wherein, the air floatation device 4 is provided with a salvaging mechanism;
salvage the mechanism and include: a support frame 401, a servo motor 402, an overshot 403 and a connection assembly 404;
the supporting frame 401 is disposed on the top of the air floatation device 4, the top of the salvaging net 403 is sleeved on the supporting frame 401, the servo motor 402 is disposed on the top of the salvaging net 403, and the connecting assembly 404 is disposed on the supporting frame 401.
In summary, the fishing mechanism is supported and fixed through the supporting frame, the driving end of the servo motor 402 is connected with the supporting frame 401 through the connecting component 404, the servo motor 402 is started, the fishing net 403 is driven to move through the servo motor 402, and therefore suspended matters on the air floatation device 4 are cleaned.
Wherein, still include: the ozone generator 11 is arranged at the joint of the aerobic tank 7 and the sedimentation tank 8, and the ozone generator 11 is used for preparing ozone gas.
Wherein, a sewage draining mechanism is arranged on the sedimentation tank 8;
the blowdown mechanism includes: a sewage draining pipe 801, an electromagnetic valve 802 and a third booster pump 803;
blow off pipe 801 sets up in the bottom of sedimentation tank 8, and solenoid valve 802 sets up in blow off pipe 801 and 8 junctions of sedimentation tank, and third booster pump 803 sets up on blow off pipe 801, clears up the inside mud that deposits of sedimentation tank 8 through sewage discharging mechanism.
Wherein, reation kettle 9 includes: a tank body 901, an access door 902 and a plurality of adsorption bins 903;
the access door 902 is arranged on the side wall surface of the tank 901, the access door 902 is movably connected with the tank 901, and the plurality of adsorption bins 903 are arranged inside the tank 901.
Carry out advanced treatment to sewage through reation kettle 9, the inside diatom that is provided with of absorption storehouse 903, diatom per gram has 60 square meters huge specific surface area, when 2% concentration, reach 120 square meters specific surface area per square meter, can provide living space for a large amount of microorganisms, make biological treatment unit's mud concentration reach more than 1000mg/L, the diatom has stronger adsorption affinity, adsorb superfine particulate matter, the colourity, poisonous harmful substance and smell to the surface, then sink and clear water separation, the clear water upwards overflows, accomplish sewage treatment.
Wherein, the DM sewage treatment apparatus 10 includes: a tank 1001, a first pipe 1002, a second pipe 1003, a partition 1004, and a charging port 1005;
the first pipeline 1002 is arranged inside the box 1001, the first pipeline 1002 is connected with a water inlet end of the box 1001, the second pipeline 1003 is sleeved on the first pipeline 1002, the second pipeline 1003 is communicated with the first pipeline 1002, the partition board 1004 is arranged inside the box 1001, the putting opening 1005 is arranged at the top of the box 1001, a first processing chamber is formed in the first pipeline 1002, a second processing chamber is formed between the second pipeline 1003 and the first pipeline 1002, and a third processing chamber is formed between the second pipeline 1003 and the box 1001.
To sum up, the box 1001 is the design of octagon, thereby make this treatment facility wholly be the design of octagon, sewage after handling through grille well 2 gets into the principal pond by the end of intaking of box 1001, the principal pond front end adopts the galvanized steel pipe, the material is the UPVC pipeline, and the end of intaking is provided with the valve, the material of valve is UPVC, the valve adopts galvanized steel pipe welded connection to first treatment chamber, first treatment chamber is seamless steel pipe, adopt reducing welding with the end of intaking, second treatment chamber adopts large-bore seamless steel pipe, second treatment chamber top is as an organic whole with first treatment chamber top with steel sheet welding, the bottom is equipped with for the thickening steel sheet, the oblique wallboard top is supported with square pipe for the third treatment, totally four, the strong point is the bottom plate corresponding position, form the U type pipe after the square pipe single face cutting is adopted in top weir groove, the weir tooth is separated again, the weir tooth is triangle-shaped.
The method comprises the following operation steps:
s1, guiding the sewage into the interior of the grid well through a guide pipeline, and blocking large particles in the sewage through the grid well;
s2, enabling the sewage to flow through the regulating tank, and regulating the water quality, the PH value and the water quantity of the sewage by the regulating tank so as to reduce flow fluctuation of the physical and chemical treatment system;
s3, pumping sewage into an air floatation device by a first booster pump, and floating flocs in the water out of the water surface by using small bubbles to realize solid-liquid separation;
s4, pumping the sewage into a multi-stage catalytic reaction system by a second booster pump to reduce the reaction barrier between the active point of organic matters in the sewage and the molecules of the medicament, and decomposing the pollutants into carbon dioxide, water or micromolecular organic matters;
s5, enabling the sewage to flow through an anaerobic tank, removing part of BOD in the sewage by the anoxic tank, and performing anaerobic degradation on high molecular organic matters in the sewage to finish the denitrification process;
s6, making the sewage flow through an aerobic tank, degrading solid organic matters in the sewage by the aerobic tank, aerating the sewage and the like to finish the nitrification process;
s7, carrying out decontamination and separation on the sewage in the sedimentation tank, and carrying out adsorption treatment on the sewage flowing through the reaction kettle;
s8, performing advanced treatment on the sewage by DM sewage treatment equipment to complete the landfill leachate treatment process.
To sum up, the embodiment of the present invention provides a landfill leachate treatment process, which includes: the system comprises a guide pipeline, a grid well, a regulating tank, an air floatation device, a multi-stage catalytic reaction system, an anaerobic tank, an aerobic tank, a sedimentation tank, a reaction kettle and a DM sewage treatment device; the water inlet end of the grid well is connected with the guide pipeline, and the grid well blocks large particles in the sewage; the water inlet end of the regulating tank is connected with the water outlet end of the grid well, and the pH value of the sewage is regulated by the regulating tank; the water inlet end of the air floatation device is connected with the water outlet end of the regulating tank, a first booster pump is arranged at the joint of the air floatation device and the regulating tank, and flocculent particles in the sewage are separated by the air floatation device; the water inlet end of the multistage catalytic reaction system is connected with the water outlet end of the air floatation device, a second booster pump is arranged at the joint of the multistage catalytic reaction system and the air floatation device, and the multistage catalytic reaction system is used for carrying out catalytic reaction on sewage; the water inlet end of the anaerobic tank is connected with the water outlet end of the multistage catalytic reaction system, and the anaerobic tank carries out anaerobic degradation on macromolecular organic matters in the sewage so as to complete the denitrification process; the water inlet end of the aerobic tank is connected with the water outlet end of the anaerobic tank, and the aerobic tank is used for degrading solid organic matters in the sewage to complete the nitration process; the water inlet end of the sedimentation tank is connected with the water outlet end of the aerobic tank, and sewage is cleaned and separated by the sedimentation tank; the water inlet end of the reaction kettle is connected with the water outlet end of the sedimentation tank; DM sewage treatment device, DM sewage treatment device's the end of intaking with reation kettle's play water end is connected, this landfill leachate treatment process reasonable in design, simple structure, the simple operation of using method is convenient for, through handling landfill leachate in proper order, make landfill leachate COD after handling, ammonia nitrogen content low, reach emission standard, and do not have secondary pollution, this processing technology has the treatment effeciency height, it is stable up to standard to go out water quality of water, the energy consumption is lower, investment and running cost are low advantage, simultaneously, have the flow simple, final play water quality of water is stable, each parameter content is low, no concentrate produces, advantage that leachate treatment effect is good.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A landfill leachate treatment process is characterized by comprising the following steps:
guiding a pipeline;
the water inlet end of the grating well is connected with the guide pipeline, and the grating well blocks large particles in the sewage;
the water inlet end of the adjusting tank is connected with the water outlet end of the grid well, and the pH value of the sewage is adjusted by the adjusting tank;
the water inlet end of the air floatation device is connected with the water outlet end of the adjusting tank, a first booster pump is arranged at the joint of the air floatation device and the adjusting tank, and flocculent particles in the sewage are separated by the air floatation device;
the water inlet end of the multi-stage catalytic reaction system is connected with the water outlet end of the air floatation device, a second booster pump is arranged at the joint of the multi-stage catalytic reaction system and the air floatation device, and the multi-stage catalytic reaction system carries out catalytic reaction on sewage;
the water inlet end of the anaerobic tank is connected with the water outlet end of the multistage catalytic reaction system, and the anaerobic tank carries out anaerobic degradation on macromolecular organic matters in the sewage so as to complete the denitrification process;
the water inlet end of the aerobic tank is connected with the water outlet end of the anaerobic tank, and solid organic matters in the sewage are degraded by the aerobic tank so as to finish the nitration process;
the water inlet end of the sedimentation tank is connected with the water outlet end of the aerobic tank, and sewage is cleaned and separated by the sedimentation tank;
the water inlet end of the reaction kettle is connected with the water outlet end of the sedimentation tank;
and the water inlet end of the DM sewage treatment equipment is connected with the water outlet end of the reaction kettle.
2. The landfill leachate treatment process of claim 1, wherein the grid well comprises: the device comprises a grating, a lead screw module, a guide groove, a hydraulic rod and a frame electromagnet;
the lead screw module set up in the inside of grid well, the grid set up in the inside of grid well, just the both ends of grid with the lead screw module is connected, the guiding groove set up in the inside of grid well, just the guiding groove with grid one end is connected, the hydraulic stem set up in the top of grid well, the frame electro-magnet set up in the flexible of hydraulic stem is served.
3. The landfill leachate treatment process according to claim 1, wherein the air floatation device is provided with a fishing mechanism;
the fishing mechanism includes: the fishing net comprises a supporting frame, a servo motor, a fishing net and a connecting assembly;
the supporting frame set up in the top of air supporting equipment, the top cover of salvaging the net is located supporting frame is last, servo motor set up in the top of salvaging the net, coupling assembling set up in supporting frame is last.
4. The landfill leachate treatment process according to claim 1, further comprising:
the ozone generator is arranged at the joint of the aerobic tank and the sedimentation tank.
5. The landfill leachate treatment process of claim 1, wherein the multistage catalytic reaction system comprises: the system comprises a catalytic reduction reaction system, a catalytic oxidation reaction system and a neutralization pond catalytic oxidation system;
the water inlet end of the catalytic oxidation reaction system is connected with the water outlet end of the catalytic reduction reaction system, and the water inlet end of the neutralization pond catalytic oxidation system is connected with the water outlet end of the catalytic oxidation reaction system.
6. The landfill leachate treatment process according to claim 1, wherein the sedimentation tank is provided with a sewage draining mechanism;
the blowdown mechanism includes: a blow-off pipe, an electromagnetic valve and a third booster pump;
the blow off pipe set up in the bottom of sedimentation tank, the solenoid valve set up in the blow off pipe and the sedimentation tank junction, the third booster pump set up in on the blow off pipe.
7. The landfill leachate treatment process according to claim 1, wherein the reaction kettle comprises: the device comprises a tank body, an access door and a plurality of adsorption bins;
the access door set up in on the lateral wall face of the jar body, just the access door with jar body swing joint, it is a plurality of adsorb the storehouse set up in the inside of the jar body.
8. The landfill leachate treatment process of claim 1, wherein the DM sewage treatment plant comprises: the device comprises a box body, a first pipeline, a second pipeline, a partition plate and a feeding port;
the first pipeline set up in the inside of box, just the first pipeline with the end of intaking of box is connected, the second pipeline cover is located on the first pipeline, just the second pipeline with the first pipeline is linked together, the baffle set up in inside the box, put in mouthful set up in the top of box.
9. The landfill leachate treatment process according to claim 2, further comprising:
the water-resisting pipe is arranged inside the grating well and sleeved on the screw rod module;
the connecting rod, the connecting rod set up in the inside of grid well, connecting rod one end with the lead screw module is connected, the connecting rod other end with the grid is connected.
10. The landfill leachate treatment process according to any one of claims 1 to 9, wherein the operation steps are as follows:
s1, leading the sewage to the interior of the grid well through the guide pipeline, and blocking large particles in the sewage through the grid well;
s2, enabling the sewage to flow through a regulating tank, and regulating the water quality, the PH value and the water quantity of the sewage by the regulating tank so as to reduce flow fluctuation of a physical and chemical treatment system;
s3, pumping sewage into an air floatation device by a first booster pump, and floating flocs in the water out of the water surface by using small bubbles to realize solid-liquid separation;
s4, pumping the sewage into a multi-stage catalytic reaction system by a second booster pump to reduce the reaction barrier between the active point of organic matters in the sewage and the molecules of the medicament, and decomposing the pollutants into carbon dioxide, water or micromolecular organic matters;
s5, enabling the sewage to flow through the anaerobic tank, removing part of BOD in the sewage by the anoxic tank, and performing anaerobic degradation on high molecular organic matters in the sewage to finish the denitrification process;
s6, making the sewage flow through the aerobic tank, degrading the solid organic matters in the sewage by the aerobic tank, aerating the sewage and the like to finish the nitrification process;
s7, cleaning and separating the sewage in the sedimentation tank, and adsorbing the sewage flowing through the reaction kettle;
s8, the DM sewage treatment equipment completes advanced treatment on the sewage to complete the landfill leachate treatment process.
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| CN113698004A (en) * | 2021-09-24 | 2021-11-26 | 日照海川水处理设备股份有限公司 | Garbage press filtrate sewage treatment system and method |
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Application publication date: 20210518 |