CN101249988B - Method for processing landfill leachate and special device thereof - Google Patents
Method for processing landfill leachate and special device thereof Download PDFInfo
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- CN101249988B CN101249988B CN2008101028615A CN200810102861A CN101249988B CN 101249988 B CN101249988 B CN 101249988B CN 2008101028615 A CN2008101028615 A CN 2008101028615A CN 200810102861 A CN200810102861 A CN 200810102861A CN 101249988 B CN101249988 B CN 101249988B
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Abstract
The invention discloses a method for processing rubbish filtration and the special apparatus. The method for processing rubbish filtration has the advantages that (1) resolving the problem of blocking of the waste reactor, (2) accelerating stabilization of the rubbish for detecting and shortening the landfill waste cycle and filtration processing cycle, (3) achieving zero discharge of the filtration, (4) realizing the sustainable development of the landfill waste site, (5) can flexibly control the recharge rage.
Description
Technical field
The present invention relates to a kind of method and isolated plant thereof of disposal of refuse percolate.
Background technology
External a large amount of laboratory and field experiment studies show that, leachate recirculation has the landfill yard of acceleration stabilisation, improve leachate quality, improve the rubbish gas production rate, quicken sedimentation, reduce advantages such as landfill yard operating cost.But handle when putting into practice, some problems occurred adopting new refuse landfill layer to carry out leachate recirculation, mainly show as: the leachate quality long period is kept acidifying in the process of recharging, organic concentration is difficult to descend and the ammonia nitrogen concentration height.On the basis that the understanding to these problems deepens continuously, the researcher has done many work, external when carrying out leachate recirculation, take adjusting percolate pH value, added nutrition, controlled measures such as temperature, microbe inoculation, obtained certain effect.This is because the content of organics of easily biological-degradable in developed country's rubbish is lower, and the organic acid accumulation problem that the leachate recirculation that carries out of landfill initial stage causes is also not serious.Compare with the rubbish of developed country, the kitchen is surplus in China's rubbish etc., and biodegradable organic waste content is higher, the problem that organic acid accumulation that the leachate recirculation that carries out of landfill initial stage causes and ammonia nitrogen concentration are high is very serious, external some are effectively recharged control measure and are not suitable for China's leachate recirculation present situation, therefore can not indiscriminately imitate the external pattern of recharging.
Landfill percolate has characteristics such as the fluctuation of water quality complexity, the water yield is big, poisonous and harmful substance content height.Up to now, nearly all sewage water treatment method all has been used for the processing of percolate, but mostly runs into problems such as water outlet difficulty up to standard, processing cost are higher, stability of a system difference.Therefore percolate is handled the difficult problem that become international in the landfill yard daily management.
There are some researches show that mineralized waste has the ability of good treatment percolate and other waste water.Processing for percolate, under the condition of low waterpower and organic loading, through highly be 2m the mineralized waste layer filtration and carry out a biological disposal upon after, water outlet COD value can be stablized and reaches national GB16997-1997 grade III Standard, promptly enter the discharge standard of urban wastewater treatment firm, effluent COD concentration even can also be lower; Find also in the research that mineralized waste also has the removal effect of good ammoniacal nitrogen.
According to problem that exists in the leachate recirculation and mineralized waste percolate had treatment effect preferably, the process of leachate recirculation and mineralized waste processing percolate can be combined, the percolate that is the new refuse generation recharges in the new refuse landfill layer after mineralized waste is handled again.Like this, because handle the water quality of back percolate makes moderate progress through mineralized waste, recharge again and can solve the dense more problem of filling more in the new refuse landfill layer, reach the purpose of quickening waste stabilisation, shortening garbage loading embeading cycle, reducing percolate treating capacity and processing cost thus.
Also there are some researches show, handle percolate with mineralized waste, the COD of percolate and the clearance of ammoniacal nitrogen all present the feature of cyclic fluctuation; And (d≤6mm), reaction bed clogging occurs after operation a period of time easily, causes the reduction of bed permeance property, effluent quality to worsen because the mineralized waste granularity is meticulous.At owing to stop up caused a series of problems, need a kind of leachate recirculation method that can address the above problem of design.
Summary of the invention
The device that the purpose of this invention is to provide a kind of disposal of refuse percolate.
The device of disposal of refuse percolate provided by the present invention, comprise that one is used to load the reactor of pending rubbish and at least two reactors that are used to load mineralized waste of series connection with it respectively, do not have annexation between described at least two reactors that are used to fill mineralized waste;
The described reactor that is used to load the reactor of pending rubbish and is used to load mineralized waste includes pond body, water-distributing device;
The bottom of described pond body is provided with through hole;
Described water-distributing device is used for importing percolate to described pond body.
For the ease of the collection of percolate, the diameter of the through hole of described pond body bottom is 1-3cm.
Also be provided with water pump in the device of disposal of refuse percolate of the present invention, be used for the percolate that the described reactor that is used for loading pending rubbish produces import the reactor that is used to load mineralized waste water-distributing device, will describedly be used to load the water-distributing device that percolate importing that the reactor for treatment of mineralized waste crosses is used to load the reactor of pending rubbish.
The described through hole of body bottom, pond that is used to load the reactor of pending rubbish and is used to load the reactor of mineralized waste also is connected with collecting pipe respectively, is respectively applied for the percolate of collecting described two kinds of reactors.
The reactor that is used for loading the reactor of pending rubbish and is used to load mineralized waste of the present invention all can adopt any of surperficial reoxygenation reactor, anaerobic reactor, gravity-flow ventilation reactor and aerobic reactor:
Described surperficial reoxygenation reactor is meant that described reactor do not establish ventilation duct, and described collecting pipe is provided with valve, and valve often closes, and lid is not established at body top, described pond;
Described anaerobic reactor is meant that described reactor do not establish ventilation duct, and described collecting pipe is provided with valve, and valve closing, and body top, described pond is provided with lid;
Described gravity-flow ventilation reactor is meant that described reactor is provided with ventilation duct, and described collecting pipe is provided with valve, and valve often opens, and lid is not established at body top, described pond;
Described aerobic reactor is meant that described reactor is provided with ventilation duct, and described collecting pipe is provided with valve, and valve often opens, and lid is not established at body top, described pond, and described reactor is carried out artificial draft.
Take all factors into consideration the influence of ventilation effect and precipitation, the internal diameter of described ventilation duct is 2-3cm, and described ventilation duct is 1-3 ventilation duct/m in the described placement density that is used for loading the reactor of pending rubbish and is used to load the reactor of mineralized waste
2, the bottom of described ventilation duct communicates with the leachate collection pipe.
For the ease of the gas diffusion, also be provided with through hole on the tube wall of described ventilation duct.
The diameter of the through hole on the described ventilation duct is 0.2-0.5cm, and the be provided with density of described through hole on ventilation duct is 500-1000 through hole/m
2
Another object of the present invention provides a kind of method of utilizing above-mentioned garbage filter liquid processing device disposal of refuse percolate.
The method of disposal of refuse percolate provided by the present invention, be with the pending rubbish reactor A that is used for loading pending rubbish of packing into, mineralized waste be respectively charged at least two reactor B and C that are used to load mineralized waste of the A that connects with the described reactor that is used for loading pending rubbish;
Starting being used in the described garbage filter liquid processing device loads reactor A and a reactor B that is used to load mineralized waste of pending rubbish, the percolate that the described reactor A that is used for loading pending rubbish is produced pours into the described reactor B that is used for loading mineralized waste, percolate is handled the back circulated backfilling to the described reactor A that is used for loading pending rubbish through mineralized waste, when following any situation of described reactor B appearance:
1. the described water outlet percolate that is used to load the reactor B of mineralized waste is mixed by clear change;
2. the described reactor B that is used to load mineralized waste is stopped up;
Close the described reactor B that is used to load mineralized waste, make it enter convalescence, and start the reactor C that another is used to load mineralized waste; The percolate that the described reactor A that is used for loading pending rubbish is produced pours into described another and is used for loading the reactor C of mineralized waste, percolate is handled the back circulated backfilling to the described reactor A that is used for loading pending rubbish through mineralized waste, when described another is used to load following any situation of the reactor C appearance of mineralized waste:
1. the described water outlet percolate that another is used to load the reactor C of mineralized waste is mixed by clear change;
2. the described reactor C that another is used to load mineralized waste stops up;
Close described another and be used to load the reactor C of mineralized waste, make it enter convalescence, and start the described reactor B that is used to load mineralized waste or connect with the described reactor that is used to load pending rubbish other any one be used to load the reactor of mineralized waste;
Operation so repeatedly reaches discharge standard or reaches the standard of including city planting ductwork in until the reactor A water outlet percolate that is used to load pending rubbish.
Wherein, the described reactor A that is used to load pending rubbish is support and layer, pending waste layer and earthing and the water distribution uniformity layer of catchmenting from bottom to top successively;
Described support is highly to be the particle of described pond body effective depth 1/10-1/20 with the layer that catchments; Described pending waste layer is highly to be the pending rubbish of described pond body effective depth 80%-90%; Described earthing and water distribution uniformity layer are highly to be the particle of described pond body effective depth 1/10-1/20;
Described reactor B and the C that is used to load mineralized waste is support and layer, the mineralized waste layer of catchmenting from bottom to top successively;
Described support is highly to be the particle of described pond body effective depth 1/10-1/20 with the layer that catchments; Described mineralized waste layer is highly to be the mineralized waste of described pond body effective depth 90%-95%.
Describedly be used to load the reactor A of pending rubbish and be used to load the reactor B of mineralized waste and the support of C is divided into two-layer with the layer that catchments, one deck is made up of for the 0-1cm particle particle diameter, another layer is that the particle of 3-5cm is formed by particle diameter, and described particle is gravel, sandstone etc.;
The earthing of the described reactor A that is used to load pending rubbish and water distribution uniformity layer are that the particle of 0-1cm is formed by particle diameter, and described particle is grogs, mineralized waste etc.
Also be provided with water-distributing device in described reactor A that is used for loading pending rubbish and described reactor B and the C that is used to load mineralized waste, the described water-distributing device that is used for loading the reactor A of pending rubbish is positioned at the top of described pond body or is embedded in described earthing and the water distribution uniformity layer; Describedly be used for loading the reactor B of mineralized waste and the water-distributing device of C is positioned at the top of described pond body or is embedded in the mineralized waste layer.
The method of disposal of refuse percolate of the present invention and isolated plant thereof are particularly suitable for the house refuse of the high biodegradable organic of the content of organic matter, and the particle diameter for the treatment of disposal of refuse also without limits.Above-mentioned mineralized waste is meant that landfill reaches stabilisation for many years substantially in landfill yard, can exploit the rubbish of utilization.
Garbage filter liquid processing method of the present invention has the following advantages:
(1) solved the blockage problem of rubbish reactor
By connecting with the reactor that is used to load pending rubbish at least two are used to load the alternate run of the reactor of mineralized waste, can solve reactor for treatment deleterious and blockage problem, the treating apparatus of having avoided causing because of blockage problem such as can't normally move at problem.
(2) quicken waste stabilisation to be detected, shorten garbage loading embeading cycle and percolate and handle the cycle
The percolate that pending rubbish produces through the alternate treatment of reactor that is used to load the reactor of pending rubbish and at least two of connecting with it and is used to load mineralized waste after, the water outlet leachate quality improves and the water yield fluctuates less relatively, percolate recharges the biodegradation that the reactor that is used for loading pending rubbish can promote pending rubbish faster again, accelerate the stripping of pollutant in the pending rubbish, being used in the reactor water outlet leachate quality of loading pending rubbish improves, thereby quicken the stabilisation of pending rubbish, shorten garbage loading embeading cycle and percolate and handle the cycle.
(3) percolate zero-emission
The percolate that pending rubbish produces is constantly circulation after mineralized waste is handled, and percolate constantly reduces owing to evaporation, thereby need not efflux, and has reduced the pollution to environment.
(4) sustainable development of realization refuse landfill
The utilization of mineralized waste makes original landfill yard can obtain recycling, has realized the sustainable development of refuse landfill, and has utilized mineralized waste as filler, constructs mineralized waste bioreactor for treatment percolate, has realized the treatment of wastes with processes of wastes against one another.
(5) can control flexibly and recharge frequency
Can control according to actual needs and recharge frequency and do not wait for several times for arriving once a day.
Description of drawings
Fig. 1 is a process chart of the present invention
Fig. 2 is surperficial reoxygenation reactor schematic diagram
Fig. 3 is the anaerobic reactor schematic diagram
Fig. 4 is gravity-flow ventilation reactor and aerobic reactor schematic diagram
The specific embodiment
Below in conjunction with concrete experiment garbage filter liquid processing method of the present invention is described further, the specific embodiment is as follows:
Embodiment 1, utilize the garbage filter liquid processing device to carry out garbage disposal
One, the assembling of garbage filter liquid processing device
Garbage filter liquid processing device of the present invention comprises two reactor B and C, water pump and collecting pipes that are used to load mineralized waste that are used to load the reactor A of pending rubbish, connect with the described reactor A that is used to load pending rubbish respectively.
Be used to load the reactor A of pending rubbish and be used to load the reactor B of mineralized waste and C to include be the open-top of the PVC pillar formation of 0.3m, pond body, water-distributing device and the valve that the bottom is provided with through hole for 1.3m, diameter highly.The diameter of pond body bottom through-hole is 1.5cm, totally 1.
For the ease of observing the degraded state of pending rubbish, be used to load on the reactor A of pending rubbish and also be provided with the rubbish sample tap.
In actual applications, being used to load the reactor A of pending rubbish and being used to loads the reactor B and the C of mineralized waste and all adopts surperficial reoxygenation reactor:
Described surperficial reoxygenation reactor is meant that described reactor do not establish ventilation duct, and described collecting pipe is provided with valve, and valve often closes, and lid is not established at body top, described pond.
The schematic diagram of surface reoxygenation reactor as shown in Figure 2, the schematic diagram of anaerobic reactor as shown in Figure 3, the schematic diagram of gravity-flow ventilation reactor and aerobic reactor is as shown in Figure 4, wherein 4 is water-distributing device, 5 is the pond body of rubbish reactor, and 7 is ventilation duct, and 6 is the lid at body top, pond.
The reactor B that is used to load the reactor A of pending rubbish and is used to load mineralized waste is connected in the following manner: the through hole that is used to load the body bottom, reactor A pond of pending rubbish is connected with collecting pipe 3-1, be used to collect percolate, the other end of collecting pipe 3-1 links to each other with a percolate collecting pit 4-1, the through hole that is used to load the body bottom, reactor B pond of mineralized waste is connected with collecting pipe 3-2, be used to collect percolate, the other end of collecting pipe 3-2 links to each other with a percolate collecting pit 4-2.
The reactor A that is used to load pending rubbish all respectively is connected a water pump by pipeline with the reactor B that is used to load mineralized waste, the water inlet end of water pump 5-1 links to each other with percolate collecting pit 4-1 by pipeline, and the water side of water pump 5-1 links to each other with the water-distributing device of the reactor B that is used to load mineralized waste.The water inlet end of water pump 5-2 links to each other with percolate collecting pit 4-2 by pipeline, and the water side of water pump 5-2 links to each other with the water-distributing device of the reactor A that is used to load pending rubbish.
Wherein, on collecting pipe 3-1 and collecting pipe 3-, respectively establish a flowing water Valve.
Being used to load the reactor A of pending rubbish and another, to be used to load connected mode and the attaching parts of the connected mode of reactor C of mineralized waste and attaching parts and above-mentioned reactor A and B identical, between these two reactor B that are used to load mineralized waste and the C without any annexation.
The schematic diagram of garbage filter liquid processing device as shown in Figure 1.
Two, be used to load the reactor A of pending rubbish and be used to load the reactor B of mineralized waste and the filling of C
The employed pending rubbish of present embodiment is taken from the residential quarter, Shanghai City, this residential quarter size of population about 10000, and the age composition of population is more reasonable, and resident's level just has concurrently, and living standard has certain otherness.
Above-mentioned pending rubbish is carried out preliminary treatment.Weigh earlier, bale broken, the rider that is respectively 120mm, 40mm and 8mm with the aperture becomes particle diameter to be respectively greater than 120mm, 40-120mm, 8-40mm with less than the rubbish of 8mm pending sieving garbage again.Then to the rubbish of different-grain diameter classify respectively (particle diameter less than the rubbish of 8mm except), being divided into is 12 classes, is respectively biodegradable organic, plastics, stationery (paper, hardboard and carton), packing material, yarn fabric, glass, ferrous metal, nonferrous metal, wooden unit, mineral constituent, specific refuse and remaining thing.
The filling thing that present embodiment is used to load the reactor A of pending rubbish select for use the pretreated particle diameter of above-mentioned process less than the biodegradable organic of 120mm as pending rubbish, wherein the kitchen is surplus more, based on household garbage, the fruits refuse is more, and more string is arranged, it is as shown in table 1 that this main physico-chemical property of loading thing is detected data.
The main physico-chemical property of biodegradable organic in the pending rubbish of table 1
The mineralized waste that is used to handle percolate in the present embodiment is taken from waste treatment field, old port, adopt the mineralized waste in 10 years landfill ages, sieve with the 8mm rider, get particle diameter less than the screenings of 8mm fill as the mineralized waste reactor, its outward appearance physical behavior shows as: a little aggregate and shot-like particle refer to twist into pieces, sand type is strong, do not have peculiar smell, similar soil, and its physicochemical character is as shown in table 2.
The main thing chemistry of table 2 mineralized waste character
Pending rubbish and mineralized waste be loaded into respectively be used to load the reactor A of pending rubbish and be used to load the reactor B of mineralized waste and the Chi Tizhong of C, is the gathering that reduces percolate, makes to load good waste layer top and keep smooth as far as possible.
Be used for loading the pond body filling respectively from bottom to top of the reactor A of pending rubbish: be the gravel of 3-5cm highly and highly be that 5cm, particle diameter are the little gravel of 1cm, as the support and the layer that catchments for 10cm, particle diameter; Highly be 1m, weight is about the pending waste layer of 60kg; Particle diameter less than 8mm, highly be the mineralized waste layer of 10cm, as overburden layer and water distribution uniformity layer; 5cm goes out to prevent feed water flow as safe altitude.
Be used for loading the reactor B of mineralized waste and the pond body filling respectively from bottom to top of C: be the gravel of 3-5cm highly and highly be that 5cm, particle diameter are the little gravel of 1cm, as the support and the layer that catchments for 10cm, particle diameter; Particle diameter less than 8mm, highly be the mineralized waste layer of 1.1m; 5cm is as safe altitude, to prevent that into water overflows.
The reactor B and the C that are used to load the reactor A of pending rubbish and are used to load mineralized waste all adopt surperficial reoxygenation reactor.Promptly be used to load the reactor A of pending rubbish and be used to load the reactor B of mineralized waste and the flowing water Valve on the collecting pipe of C bottom often closes, lid is not established at body top, pond, is in opening-wide state.
In order to reduce the diffusion of the smell that percolate produces, the water-distributing device that is used for loading the reactor A of pending rubbish preferably is embedded in pending waste layer, be used for loading the reactor B of mineralized waste and the water-distributing device of C can be embedded in the mineralized waste layer, also can be placed on the surface of mineralized waste layer.In this experiment, the water-distributing device that will be used to load the reactor A of pending rubbish is embedded in the position of the pending waste layer upper surface of pending waste layer middle distance 5cm, and the water-distributing device that will be used to load the reactor B of mineralized waste and C is embedded in the position of mineralized waste layer middle distance mineralized waste layer upper surface 5cm.
Three, will be used to load the water-distributing device that percolate that the reactor A of pending rubbish produces is poured into the reactor B that is used to load mineralized waste, recharge the water-distributing device of the reactor A that is used to load pending rubbish after the reactor B of percolate through being used to load mineralized waste handled again, percolate does not efflux.Be used to load the water-distributing device that percolate that the reactor A of pending rubbish produces all is poured into the reactor B that is used to load mineralized waste once more, percolate recharges the water-distributing device of the reactor A that is used to load pending rubbish once more after the reaction B device that is used to load mineralized waste is handled.
Experiment runs to the 233rd day, the treatment effect that is used to load the reactor B of mineralized waste begins variation, show as: the water outlet percolate is mixed by clear change, water outlet percolate COD concentration rises to more than the 2000mg/L about by 300mg/L, water outlet percolate ammonia nitrogen concentration is by rising to more than the 350mg/L suddenly below the 15mg/L, the COD clearance is by dropping to more than 99% below 93%, the ammoniacal nitrogen clearance is by dropping to 90% more than 99.8%, this moment, reactor B accumulative total was degraded the amount of COD between the 17-21g/kg mineralized waste, and accumulative total is degraded the amount of ammoniacal nitrogen between 600-800mg/kg rubbish.
As continue to move this system, the reactor B that then is used to load mineralized waste is stopped up, and the reactor B water outlet percolate COD value that is used to load mineralized waste is up to 12200mg/L, and ammonia nitrogen concentration reaches 945mg/L, the COD clearance is reduced to below 50%, and the ammoniacal nitrogen clearance only is 16%.Accumulative total is degraded the COD amount between 68-71g/kg rubbish, and the ammoniacal nitrogen amount that adds up to degrade is 1600-1800mg ammoniacal nitrogen/kg rubbish.
Four, since the 234th day, close the reactor B that is used to load mineralized waste, make it to enter convalescence, start be used to load the reactor A of pending rubbish and connect with it another be used to load the reactor C of mineralized waste.Be about to be used to load percolate that the reactor A of pending rubbish produces and be poured into the water-distributing device that another is used to load the reactor C of pending rubbish, percolate recharges the water-distributing device of the reactor A that is used to load pending rubbish again after another reactor C that is used to load pending rubbish handles, percolate does not efflux.Be used to load percolate that the reactor A of pending rubbish produces and all be poured into the water-distributing device that another is used to load the reactor C of pending rubbish once more, percolate recharges the water-distributing device of the reactor A that is used to load pending rubbish once more after another reactor C that is used to load pending rubbish handles.
Experiment runs to the 304th day, another treatment effect that is used to load the reactor C of mineralized waste begins variation, show as: the 2140mg/L the when 22200mg/L of the reactor A water outlet percolate COD value that is used to load pending rubbish during from the 234th day drops to the 304th day, the COD fall is 90.4%; Another COD that is used to load the reactor C water outlet percolate of mineralized waste rises to the 243rd day 4700mg/L from the 234th day 300mg/L, reduces to the 304th day 510mg/L subsequently, and final COD clearance is 76%.412mg/L when the 1271mg/L of the reactor A water outlet percolate ammoniacal nitrogen that is used to load pending rubbish during from the 234th day drops to the 304th day, fall is 67.6%; Another ammoniacal nitrogen that is used to load the reactor C water outlet percolate of mineralized waste then drops to the 304th day 325mg/L from the 234th day 583mg/L, ammonia nitrogen removal frank then drops to 21% from 54%.
As continue to move this system, then another reactor C that is used to load mineralized waste stops up.
Five, since the 305th day, close the reactor C that another is used to load mineralized waste, make it to enter convalescence, start the reactor B that is used to load the reactor A of pending rubbish and is used to load mineralized waste once more.Be about to be used to load the water-distributing device that percolate that the reactor A of pending rubbish produces is poured into the reactor B that is used to load mineralized waste, recharge the water-distributing device of the reactor A that is used to load pending rubbish after the reactor B of percolate through being used to load mineralized waste handled again, percolate does not efflux.Be used to load the water-distributing device that percolate that the reactor A of pending rubbish produces all is poured into the reactor B that is used to load mineralized waste once more, percolate recharges the water-distributing device of the reactor A that is used to load pending rubbish once more after the reactor B that is used to load mineralized waste is handled.
The reactor A water outlet percolate COD that is used to load pending rubbish drops to 560mg/L from 2300mg/L, and fall is 75.6%.The reactor B water outlet percolate COD that is used to load mineralized waste drops to 480mg/L from 930mg/L.The reactor A water outlet percolate ammoniacal nitrogen that is used to load pending rubbish drops to 220mg/L from 470mg/L.The reactor B water outlet percolate ammoniacal nitrogen that is used to load mineralized waste drops to 42mg/L from 300mg/L, and clearance is raised to 80% from 37%.
Operation so repeatedly reaches discharge standard or reaches the standard of including city planting ductwork in until the reactor A water outlet percolate that is used to load pending rubbish.
Experiment has moved 1 year, will be used for every day loading percolate that the reactor A of pending rubbish produces through being used for loading mineralized waste reactor B or connect with the above-mentioned reactor A that is used to load pending rubbish another be used to load the water-distributing device that all recharges the reactor A that is used to load pending rubbish after the reactor C processing of mineralized waste.Sampling in average per about 10 days is once got the about 100mL of percolate at every turn, measures COD value and ammonia nitrogen concentration in the percolate, and in time replenishes isopyknic pending percolate from old port landfill yard; Add running water once to the reactor B that is used for loading mineralized waste or another reactor C that is used to load mineralized waste of connecting with the above-mentioned reactor A that is used to load pending rubbish weekly, with simulating nature precipitation, add of that month average precipitation (mm) * mineralized waste reactor cross-section area (mm in the volume=table 3 of running water weekly
2)/4.
Each monthly average precipitation (mm) of table 3 Shanghai Nanhui 1956-1982
| Month | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Precipitation | 44.1 | 62.3 | 79.3 | 103.1 | 126.2 | 153 | 93.2 | 115.1 | 173.6 | 56.7 | 50.8 | 42.5 |
Table 3 is selected from 2005 " Shanghai City bamboo plantation, Bai Long port sludge of sewage treatment plant collection transportation system and the sludge treatment engineering feasibility study " that write the Shanghai City Municipal Engineering Design and Research Institute.
Through the operation in 1 year, the 79000mg/L of the average COD value of reactor A water outlet percolate that is used to load pending rubbish during from the experiment beginning dropped to the 560mg/L when experiment finishes, and the mean concentration of ammoniacal nitrogen has dropped to 220mg/L from 3100mg/L.According to the COD value before the obstruction of least square fitting and ammonia nitrogen concentration and time relation formula, COD concentration will drop to three grades of discharge standard 1000mg/L of percolate, need 2.1 years, ammonia nitrogen concentration will drop to percolate secondary discharge standard 25mg/L, need 2.7 years, reach first discharge standard 15mg/L, need 3.1 years.According to adopting alternative expression treating apparatus COD value and ammonia nitrogen concentration and time relation formula after the obstruction of least square fitting, COD concentration will drop to three grades of discharge standard 1000mg/L of percolate, only need 320 days, ammonia nitrogen concentration will drop to percolate secondary discharge standard 25mg/L, need 1.3 years, reach first discharge standard 15mg/L, need 1.5 years, shortened more than one times than the conventional percolate processing cycle.
Claims (3)
1. the method for a disposal of refuse percolate is characterized in that: adopt the garbage filter liquid processing device;
Described garbage filter liquid processing device comprises that one is used to load the reactor of pending rubbish and at least two reactors that are used to load mineralized waste of series connection with it respectively; The described reactor that is used to load the reactor of pending rubbish and is used to load mineralized waste comprises pond body and water-distributing device;
The bottom of described pond body is provided with through hole;
Described water-distributing device is used for importing percolate to described pond body;
With the pending rubbish reactor A that is used for loading pending rubbish of packing into, mineralized waste is respectively charged at least two reactor B and C that are used to load mineralized waste that connect with the described reactor A that is used for loading pending rubbish;
Starting being used in the described garbage filter liquid processing device loads reactor A and a reactor B that is used to load mineralized waste of pending rubbish, the percolate that the described reactor A that is used for loading pending rubbish is produced pours into the described reactor B that is used for loading mineralized waste, percolate is handled the back circulated backfilling through mineralized waste and is used for loading pending reactor A of drawing rubbish to described, when following any situation of described reactor B appearance:
1. the described water outlet percolate that is used to load the reactor B of mineralized waste is mixed by clear change;
2. the described reactor B that is used to load mineralized waste is stopped up;
Close the described reactor B that is used to load mineralized waste, make it enter convalescence, and start the reactor C that another is used to load mineralized waste; The percolate that the described reactor A that is used for loading pending rubbish is produced pours into the reactor C that another is used for loading mineralized waste, percolate is handled the back circulated backfilling to the described reactor A that is used for loading pending rubbish through mineralized waste, when another is used to load following any situation of the reactor C appearance of mineralized waste:
1. another water outlet percolate that is used to load the reactor C of mineralized waste is mixed by clear change;
2. another reactor C that is used to load mineralized waste stops up;
Close the reactor C that another is used to load mineralized waste, make it enter convalescence, and start the described reactor B that is used to load mineralized waste or connect with the described reactor A that is used to load pending rubbish other any one be used to load the reactor of mineralized waste;
Operation so repeatedly reaches discharge standard or reaches the standard of including city planting ductwork in until the reactor A water outlet percolate that is used to load pending rubbish.
2. method according to claim 1 is characterized in that: the described reactor A that is used to load pending rubbish is support and layer, pending waste layer and earthing and the water distribution uniformity layer of catchmenting from bottom to top successively;
Described support is highly to be the particle of the 1/10-1/20 of described pond body effective depth with collecting this layer; Described pending waste layer is highly to be the pending rubbish of described pond body effective depth 80%-90%; Described earthing and water distribution uniformity layer are highly to be the particle of the 1/10-1/20 of described pond body effective depth;
Described reactor B and the C that is used to load mineralized waste is support and layer, the mineralized waste layer of catchmenting from bottom to top successively;
Described support is highly to be the particle of the 1/10-1/20 of described pond body effective depth with the layer that catchments; Described mineralized waste layer is highly to be the mineralized waste of described pond body effective depth 90%-95%.
3. method according to claim 2 is characterized in that: the described water-distributing device that is used for loading the reactor A of pending rubbish is positioned at the top of described pond body or is embedded in described earthing and the water distribution uniformity layer; Describedly be used for loading the reactor B of mineralized waste and the water-distributing device of C is positioned at the top of described pond body or is embedded in the mineralized waste layer.
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| CN2008101028615A CN101249988B (en) | 2008-03-27 | 2008-03-27 | Method for processing landfill leachate and special device thereof |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101767877B (en) * | 2010-01-13 | 2012-05-30 | 广西大学 | Microaerophilic recirculation treatment method for membrane-separation concentrated solution of garbage leachate |
| CN101804411A (en) * | 2010-03-02 | 2010-08-18 | 华东师范大学 | Method for controlling obnoxious gas of urban refuse landfill |
| CN102285741A (en) * | 2011-04-15 | 2011-12-21 | 桂林理工大学 | Anaerobic leachate zero-emission recharging method capable of accelerating stabilization of fresh refuse |
| CN103447279B (en) * | 2013-07-30 | 2016-05-25 | 浙江大学 | One way of life waste disposal method and treatment facility thereof |
| CN103482766A (en) * | 2013-09-27 | 2014-01-01 | 桂林理工大学 | Device for performing synchronous nitration and denitrification on percolate by using mineralized rubbish reaction bed |
| CN103901166A (en) * | 2014-03-24 | 2014-07-02 | 青岛理工大学 | Method for experimenting refuse degradation of semi-aerobic reactor with leachate recharging |
| CN104445613B (en) * | 2014-03-29 | 2017-05-24 | 长沙亿纳环保科技有限公司 | Mineralized refuse packed bed and wastewater denitrification method |
| CN108500024B (en) * | 2018-03-21 | 2021-02-09 | 桂林理工大学 | Device for accelerating methanation of landfill garbage |
| CN108246761B (en) * | 2018-03-21 | 2021-04-09 | 桂林理工大学 | Method for accelerating methanation of landfill garbage |
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