CN101249988A - 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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- CN101249988A CN101249988A CNA2008101028615A CN200810102861A CN101249988A CN 101249988 A CN101249988 A CN 101249988A CN A2008101028615 A CNA2008101028615 A CN A2008101028615A CN 200810102861 A CN200810102861 A CN 200810102861A CN 101249988 A CN101249988 A CN 101249988A
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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 for the treatment 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 stabilization, improve leachate quality, improve the rubbish gas production rate, quicken sedimentation, reduce advantages such as landfill yard working 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 researchist has done many work, external when carrying out leachate recirculation, take adjusting percolate pH value, added measures such as nutrition, controlled temperature, microbe inoculation, obtained certain effect.This is because the organic content of readily biodegradable 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 measure of control 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, hazardous and noxious substances 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, system stability difference.Therefore percolate is handled the difficult problem that become international in the landfill yard daily administration.
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 emission 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 ammonia-state 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 treatment capacity and processing cost thus.
Also there are some researches show, handle percolate with mineralized waste, the COD of percolate and the clearance of ammonia-state nitrogen all present the feature of cyclic fluctuation; And (d≤6mm), reaction bed latch up phenomenon occurs after operation for some time easily, causes the reduction of bed penetrating quality, 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 for the treatment of refuse percolate.
The device for the treatment of refuse percolate provided by the present invention, comprise that one is used to load the reactor of pending rubbish and placed in-line with it respectively at least two reactors that are used to load mineralized waste, 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 for the treatment 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 collection tube 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, natural ventilation reactor and aerobic reactor:
Described surperficial reoxygenation reactor is meant that described reactor do not establish vent-pipe, and described collection tube 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 vent-pipe, and described collection tube is provided with valve, and valve closes, and body top, described pond is provided with lid;
Described natural ventilation reactor is meant that described reactor is provided with vent-pipe, and described collection tube 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 vent-pipe, and described collection tube is provided with valve, and valve often opens, and lid is not established at body top, described pond, and described reactor is carried out induced draught.
Take all factors into consideration the influence of ventilation effect and precipitation, the internal diameter of described vent-pipe is 2-3cm, and described vent-pipe is 1-3 vent-pipe/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 vent-pipe communicates with the leachate collection pipe.
For the ease of gaseous diffusion, also be provided with through hole on the tube wall of described vent-pipe.
The diameter of the through hole on the described vent-pipe is 0.2-0.5cm, and the be provided with density of described through hole on vent-pipe 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 treating refuse percolate.
The method for the treatment 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 is respectively charged into and described two reactor B and C that are used to load mineralized waste that are used for loading the reactors in series A of pending rubbish at least;
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 decubation, 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 decubation, and start the described reactor B that is used to load mineralized waste or with the described reactors in series that is used to load pending rubbish other any one be used to load the reactor of mineralized waste;
Operation so repeatedly reaches emission 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 virtual height 1/10-1/20 with the layer that catchments; Described pending waste layer is highly to be the pending rubbish of described pond body virtual height 80%-90%; Described earthing and water distribution uniformity layer are highly to be the particle of described pond body virtual height 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 virtual height 1/10-1/20 with the layer that catchments; Described mineralized waste layer is highly to be the mineralized waste of described pond body virtual height 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 the 0-1cm granulometric composition by particle diameter, another layer is the granulometric composition of 3-5cm by particle diameter, and described particle is gravel, sandstone etc.;
Described earthing and the water distribution uniformity layer that is used to load the reactor A of pending rubbish is to be the granulometric composition of 0-1cm 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 for the treatment of refuse percolate of the present invention and isolated plant thereof are particularly suitable for the domestic refuse of the high biodegradable organic of organic content, and the particle diameter for the treatment of treating refuse also without limits.Above-mentioned mineralized waste is meant that landfill reaches stabilization 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 being used to load the alternate run of the reactor of mineralized waste with at least two of the reactors in series that is used to load pending rubbish, can solve reactor for treatment deleterious and blockage problem, the treatment unit 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 that is used to load the reactor of pending rubbish and placed in-line with it at least two reactors that are used to load mineralized waste after, the water outlet leachate quality improves and the water yield fluctuates less relatively, percolate recharges the biological degradation that the reactor that is used for loading pending rubbish can promote pending rubbish faster again, accelerate the stripping of pollutent in the pending rubbish, being used in the reactor water outlet leachate quality of loading pending rubbish improves, thereby quicken the stabilization of pending rubbish, shorten garbage loading embeading cycle and percolate and handle the cycle.
(3) percolate zero release
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 flow sheet of the present invention
Fig. 2 is surperficial reoxygenation reactor synoptic diagram
Fig. 3 is the anaerobic reactor synoptic diagram
Fig. 4 is natural ventilation reactor and aerobic reactor synoptic diagram
Embodiment
Below in conjunction with concrete experiment garbage filter liquid processing method of the present invention is described further, embodiment is as follows:
One, the assembling of garbage filter liquid processing device
Garbage filter liquid processing device of the present invention, comprise one be used to load the reactor A of pending rubbish, respectively with described placed in-line two reactor B and C, water pump and the collection tubes that are used to load mineralized waste of reactor A that are used to load pending rubbish.
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 thief hole.
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 vent-pipe, and described collection tube is provided with valve, and valve often closes, and lid is not established at body top, described pond.
The synoptic diagram of surface reoxygenation reactor as shown in Figure 2, the synoptic diagram of anaerobic reactor as shown in Figure 3, the synoptic diagram of natural 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 vent-pipe, 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 collection tube 3-1, be used to collect percolate, the other end of collection tube 3-1 links to each other with a percolate collecting tank 4-1, the through hole that is used to load the body bottom, reactor B pond of mineralized waste is connected with collection tube 3-2, be used to collect percolate, the other end of collection tube 3-2 links to each other with a percolate collecting tank 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 feed-water end of water pump 5-1 links to each other with percolate collecting tank 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 feed-water end of water pump 5-2 links to each other with percolate collecting tank 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 collection tube 3-1 and collection tube 3-, respectively establish a flowing water Valve.
Being used to load the reactor A of pending rubbish and another, to be used to load mode of connection and the interconnecting piece of the mode of connection of reactor C of mineralized waste and interconnecting piece 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 synoptic 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 structure of population is more reasonable, and resident's level just has concurrently, and standard of living has certain otherness.
Above-mentioned pending rubbish is carried out pre-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, fiber board and carton), packing material, yarn fabric, glass, ferrous metal, non-ferrous 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 vegetable fibre 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 screen underflow of 8mm fill as the mineralized waste reactor, its outward appearance physical behavior shows as: a little coacervate and saccharoid 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 collection tube 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 ammonia-state 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 ammonia-state 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 ammonia-state nitrogen clearance only is 16%.Accumulative total is degraded the COD amount between 68-71g/kg rubbish, and the ammonia-state nitrogen amount that adds up to degrade is 1600-1800mg ammonia-state nitrogen/kg rubbish.
Four, since the 234th day, close the reactor B that is used to load mineralized waste, make it to enter decubation, startup is used to load the reactor A of pending rubbish and placed in-line with it another is 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 ammonia-state nitrogen that is used to load pending rubbish during from the 234th day drops to the 304th day, fall is 67.6%; Another ammonia-state 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 decubation, 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 ammonia-state nitrogen that is used to load pending rubbish drops to 220mg/L from 470mg/L.The reactor B water outlet percolate ammonia-state 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 emission 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 handle with the placed in-line reactor C that another is used to load mineralized waste of the above-mentioned reactor A that is used to load pending rubbish after all recharge the water-distributing device of the reactor A that is used to load pending rubbish.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 tap water once to the reactor B that is used for loading mineralized waste or with the placed in-line reactor C that another is used to load mineralized waste of 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 tap water weekly
2)/4.
Each monthly average quantity of precipitation (mm) of table 3 Shanghai Nanhui 1956-1982
| |
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Quantity of 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 haulage system and the sludge disposal 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 concns of ammonia-state 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 emission 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 treatment unit 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 emission 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 (10)
1, a kind of garbage filter liquid processing device is characterized in that: described garbage filter liquid processing device comprises that one is used to load the reactor of pending rubbish and placed in-line with it respectively at least two reactors that are used to load mineralized waste; The described reactor that is used to load the reactor of pending rubbish and is used to load mineralized waste comprises 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.
2, garbage filter liquid processing device according to claim 1 is characterized in that: the diameter of described pond body bottom through-hole is 1-3cm.
3, garbage filter liquid processing device according to claim 1, it is characterized in that: also be provided with water pump in the described garbage filter liquid processing device, the percolate that is used for that the reactor of the pending rubbish of described filling is produced imports the water-distributing device of the reactor of loading mineralized waste, the percolate that the reactor for treatment of described filling mineralized waste is crossed imports in the water-distributing device of the reactor of loading pending rubbish.
4, garbage filter liquid processing device according to claim 1, it is characterized in that: the through hole of the body bottom, pond of the reactor of the reactor of the pending rubbish of described filling and filling mineralized waste also is connected with collection tube respectively, is used to collect the percolate of described two kinds of reactors.
5, according to arbitrary described garbage filter liquid processing device among the claim 1-4, it is characterized in that: the reactor of the reactor of the pending rubbish of described filling and filling mineralized waste can adopt any in surperficial reoxygenation reactor, anaerobic reactor, natural ventilation reactor and the aerobic reactor:
Described surperficial reoxygenation reactor is meant that described reactor do not establish vent-pipe, and described collection tube 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 vent-pipe, and described collection tube is provided with valve, and valve closes, and body top, described pond is provided with lid;
Described natural ventilation reactor is meant that described reactor is provided with vent-pipe, and described collection tube 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 vent-pipe, and described collection tube is provided with valve, and valve often opens, and lid is not established at body top, described pond, and described reactor is carried out induced draught;
The internal diameter of described vent-pipe is 2-3cm, and described vent-pipe is 1-3 vent-pipe/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 vent-pipe communicates with the leachate collection pipe.
The tube wall of described vent-pipe is provided with through hole, and the diameter of described through hole is 0.2-0.5cm, and the be provided with density of described through hole on vent-pipe is 500-1000 through hole/m
2
6, a kind of method of utilizing arbitrary described garbage filter liquid processing device treating refuse percolate among the claim 1-5, be with the pending rubbish reactor A that is used for loading pending rubbish of packing into, mineralized waste is respectively charged into and described placed in-line two reactor B and the C that are used to load mineralized waste of reactor A that are used for loading pending rubbish at least;
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 decubation, and start described another and be used to load the reactor C of 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 decubation, and start the described reactor B that is used to load mineralized waste or with the described reactor A that is used to load pending rubbish placed in-line other any one be used to load the reactor of mineralized waste;
Operation so repeatedly reaches emission 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.
7, method according to claim 6 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 virtual height with the layer that catchments; Described pending waste layer is highly to be the pending rubbish of described pond body virtual height 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 virtual height;
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 virtual height with the layer that catchments; Described mineralized waste layer is highly to be the mineralized waste of described pond body virtual height 90%-95%.
8, method according to claim 7, it is characterized in that: 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 the 0-1cm granulometric composition by particle diameter, another layer is the granulometric composition of 3-5cm by particle diameter, and described particle is gravel, sandstone.
9, method according to claim 7 is characterized in that: described earthing and the water distribution uniformity layer that is used to load the reactor A of pending rubbish is to be the granulometric composition of 0-1cm by particle diameter, and described particle is grogs, mineralized waste.
10, according to arbitrary described method among the claim 6-9, it 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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Cited By (9)
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| 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 |
| CN101767877B (en) * | 2010-01-13 | 2012-05-30 | 广西大学 | Microaerophilic recirculation treatment method for membrane-separation concentrated solution of garbage leachate |
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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 |
| CN103447279A (en) * | 2013-07-30 | 2013-12-18 | 浙江大学 | Household garbage treatment method and treatment equipment |
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| 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 |
| CN104445613A (en) * | 2014-03-29 | 2015-03-25 | 湖南碧源环保工程建设有限公司 | Mineralized refuse packed bed and wastewater denitrification method |
| CN108246761A (en) * | 2018-03-21 | 2018-07-06 | 桂林理工大学 | A kind of method for accelerating landfill waste methanation |
| CN108500024A (en) * | 2018-03-21 | 2018-09-07 | 桂林理工大学 | A kind of device accelerating landfill waste methanation |
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