CN102626708B - Household garbage bioreactor and aerobic-anaerobic-semi-aerobic circulation treatment method - Google Patents
Household garbage bioreactor and aerobic-anaerobic-semi-aerobic circulation treatment method Download PDFInfo
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- CN102626708B CN102626708B CN201210096000.7A CN201210096000A CN102626708B CN 102626708 B CN102626708 B CN 102626708B CN 201210096000 A CN201210096000 A CN 201210096000A CN 102626708 B CN102626708 B CN 102626708B
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Abstract
The invention discloses a bioreactor, which comprises a reactor, a horizontal perforation ventilation pipe, a vertical perforation ventilation pipe, a percolate adjusting tank, a percolate discharge guide pipe, a water seal tank and an air collection cover. The horizontal ventilation pipe is installed at the bottom end inside the reactor, and two ends of the horizontal ventilation pipe are both communicated with the external. One end of the vertical ventilation pipe is communicated with the horizontal ventilation pipe, and the other end of the vertical ventilation pipe is communicated with the external. A submersible sewage pump is arranged in the percolate adjusting tank, a water outlet of the submersible sewage pump is communicated with a water distributor through a percolate recharge pipe, and the water distributor is arranged at the top of the reactor. One end of the percolate discharge guide pipe is communicated with the bottom of the reactor, the other end of the percolate discharge guide pipe is communicated with the percolate adjusting tank, and an outlet of the percolate discharge guide pipe is located above the highest water line of the percolate adjusting tank. The percolate discharge guide pipe, the percolate recharge pipe and the horizontal ventilation pipe are respectively provided with a switch valve. The water seal tank is arranged at the upper end of the reactor, and air collection cover is installed on the water seal tank and covers the opening end at the top of the reactor, and an air discharge port is arranged on the air collection cover. An aerobic-anaerobic-semi-aerobic circulation treatment method of household garbage is further disclosed.
Description
Technical field
The present invention relates to domestic garbage disposer technical field, particularly the aerobic circulating processing method of a kind of bioreactor and house refuse Aerobic-anaerobic-standard.
Background technology
Along with expanding economy; the quickening of urbanization process; the output of domestic waste grows with each passing day; the phenomenon of garbage-surrounded city forces people to start very early to pay close attention to the processing of domestic waste, has formed the house refuse scale Technology development take sanitary landfills, burning and compost as main body at present.But all the time, the pollution of life in the countryside rubbish and processing do not obtain the enough concerns of people, cause current serious to lack the treatment technology for life in the countryside rubbish.
Sanitary landfills is the main methods of current domestic waste, and this technology is mainly to rely on microbial action degraded house refuse, realizes innoxious that house refuse reaches.But Sanitary Landfill Technology exists, stabilizing take is long, methane production is relatively low, easily produce secondary pollution problems, and for this reason, bioreactor landfill becomes the study hotspot of our times consumer waste filling and embedding processing.Bioreactor landfill is according to the not same-action of microorganism, can be divided into aerobic, anaerobism and accurate aerobic 3 types.The clean energy resourcies such as wherein aerobic degradation is fastest, the recyclable methane of anaerobic degradation, accurate aerobic degradation can be removed nitrogen pollutant effectively.But these dissimilar bioreactor landfills are not yet realized the efficient combination of mutual supplement with each other's advantages.On the one hand, rely on single biological treatment effect, have deficiency separately, high such as aerobic operating cost, anaerobism exists ammonia nitrogen and organic acid to suppress phenomenon, accurate aerobicly has problems such as technology is immature; On the other hand, by dissimilar reactor tandem compound, although can form complementation, can increase and build and operating cost.Therefore, still need to study domestic refuse bioreactor equipment and the technology of Cheap highly effective.
Along with the development of rural economy and the raising of life of farmers level, not only make life in the countryside Municipal Garbage Yield sharply increase, and there is huge variation in component characteristic, this has caused the pollution problem of life in the countryside rubbish day by day to highlight.The features such as but the treatment technology of current domestic waste not only expense is high, and scale is large, intensive degree is high, cannot adapt to rural economy level relatively low, and generation is relatively little, discharge dispersion.
Therefore, how to make full use of and improve existing Disposal of Municipal Refuse, effectively process the house refuse in rural area, can be utilized in rural area and promote, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides the aerobic circulating processing method of a kind of bioreactor and house refuse Aerobic-anaerobic-standard.On the one hand, by improving bioreactor construction, by its miniaturization and equipment, reduced investment and the operating cost of equipment; On the other hand, by specific operation method, in single creature reactor, realize aerobic, anaerobism and the accurate aerobic degradation of house refuse, accelerated the stabilisation speed of house refuse; In addition, by the combination of multiple bioreactors, realized circulation operation continuously, can effectively process house refuse, be conducive to be promoted in rural area.
A kind of bioreactor, for the processing of house refuse, comprising:
Reactor;
Horizontal ventilation duct and vent riser, on described horizontal ventilation duct and vent riser, be equipped with some passages, described horizontal ventilation duct is installed on the inner bottom of described reactor, and the two ends of described horizontal ventilation duct are all connected with the external world, described vent riser one end is connected with described horizontal ventilation duct, and the other end is in communication with the outside;
Leachate equalization basin, is provided with submersible sewage pump in described leachate equalization basin, and the delivery port of described submersible sewage pump is connected with water-locator by leachate recirculation pipe, and described water-locator is arranged at the top of described reactor;
The percolate discharge guiding pipe that one end is communicated with the bottom of described reactor, the other end of described percolate discharge guiding pipe communicates with described leachate equalization basin, on described percolate discharge guiding pipe, leachate recirculation pipe and described horizontal ventilation duct, is equipped with switch valve;
Be arranged at the water sealed tank of described reactor upper end;
Be installed on described water sealed tank, and cover at the gas skirt of the open top end of described reactor, on described gas skirt, offer exhaust outlet.
Preferably, in above-mentioned bioreactor, described leachate equalization basin is one, and described reactor is to be arranged in around multiple of described leachate equalization basin.
Preferably, in above-mentioned bioreactor, described reactor bottom also comprises the first geotextiles, graded gravel layer and the second geotextiles from bottom to top successively, and described percolate discharge guiding pipe and described graded gravel layer align, and described horizontal ventilation duct is installed on described the second geotextiles top;
Described the second geotextiles top is used for arranging waste layer;
Described waste layer top is used for arranging that old rubbish cover layer, described water-locator are arranged in described old rubbish cover layer top.
Preferably, in above-mentioned bioreactor, described percolate discharge guiding pipe is in tilted layout, and the water outlet height of described percolate discharge guiding pipe is lower than water inlet height, and the delivery port of described percolate discharge guiding pipe is higher than the maximum water level of described leachate equalization basin.
Preferably, in above-mentioned bioreactor, the caliber >=100mm of described percolate discharge guiding pipe, described vent riser and horizontal ventilation duct.
The aerobic circulating processing method of one way of life garbage aerobic-anaerobism-standard, adopts the bioreactor described in as above any one to process, and comprises the treatment step of first reactor:
1) open described horizontal ventilation duct and percolate discharge guiding pipe, in reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
2) after house refuse has been loaded, close horizontal ventilation duct, leachate recirculation pipe and percolate discharge guiding pipe, and gas skirt is installed, house refuse is carried out to anaerobic degradation;
3) complete after anaerobic degradation, open gas skirt, horizontal ventilation duct and percolate discharge guiding pipe, the path that air is formed by horizontal ventilation duct, vent riser, percolate discharge guiding pipe enters, the environment that now forms aerobic-anaerobic-anaerobism around bottom, top layer, horizontal ventilation duct and the vent riser of house refuse is degraded house refuse under accurate aerobic environment;
4) house refuse become thoroughly decomposed completely after discharging.
Preferably, in the aerobic circulating processing method of above-mentioned house refuse Aerobic-anaerobic-standard, described step 2) specifically comprise step:
21) complete after the filling of house refuse, water-locator is positioned on old rubbish cover layer, and by flexible pipe, leachate recirculation pipe is connected with water-locator;
22) close leachate recirculation pipe, horizontal ventilation duct and percolate discharge guiding pipe, and gas skirt is installed, start anaerobic degradation;
23) after degraded the first Preset Time, open percolate discharge guiding pipe, percolate is discharged into after regulating reservoir, close percolate discharge guiding pipe, regulate the pH value of percolate simultaneously, and inoculate methanogen;
24) will regulate pH value with submersible sewage pump, and inoculate the percolate after methanogen, recharge operation by leachate recirculation pipe and water-locator, after having recharged, close leachate recirculation pipe, continue anaerobic degradation operation;
25) reach after predetermined value at methane content and product methane speed, once recharge operation every the second Preset Time, after this regulate no longer separately pH value and inoculation methanogen.
Preferably, in the aerobic circulating processing method of above-mentioned house refuse Aerobic-anaerobic-standard, described step 21) further comprise step:
211) complete after the filling of house refuse, at the old rubbish of house refuse surface coverage one deck, form old rubbish cover layer, with to house refuse deodorizing, and microbe inoculation, accelerate the degraded of house refuse;
212) arrange water-locator at the tectal upper surface of old rubbish, by flexible pipe, leachate recirculation pipe is connected with water-locator.
Preferably, in the aerobic circulating processing method of above-mentioned house refuse Aerobic-anaerobic-standard, in described step 3), house refuse is carried out accurate aerobic degradation and is specifically comprised step:
31) house refuse is degraded after the 3rd Preset Time under accurate aerobic environment, starts submersible sewage pump and carries out leachate recirculation operation;
32) complete and once recharge after operation, close submersible sewage pump, repeat subsequently leachate recirculation operation, until house refuse is become thoroughly decomposed.
Preferably, in the aerobic circulating processing method of above-mentioned house refuse Aerobic-anaerobic-standard, described leachate equalization basin is one, and described reactor is to be arranged in around multiple of described leachate equalization basin;
In described step 2) also comprise afterwards step:
201) according to described in step 1), open second reactor, in second reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
202) after second reactor charge finishes, by step 22) described airtight second reactor, house refuse is carried out anaerobic degradation, adopts step 23) described mode carries out leachate recirculation to second reactor;
203) adopting step 25) described mode carries out leachate recirculation to first reactor;
204) according to step 201) described in, open the 3rd reactor, in the 3rd reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
After described step 3), also comprise step:
301) adopting step 203) described mode carries out leachate recirculation to second reactor;
302) after the 3rd reactor charge finishes, by step 202) described airtight the 3rd reactor, house refuse is carried out anaerobic degradation, adopts step 202) described mode carries out leachate recirculation to the 3rd reactor;
303) according to step 201) described in, open the 4th reactor, in the 4th reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
After described step 4), also comprise step:
401) according to described in step 3), open second reactor, house refuse is degraded in accurate aerobic environment;
402) adopting step 301) described mode carries out leachate recirculation to the 3rd reactor;
403) after the 4th reactor charge finishes, by step 302) described airtight the 4th reactor, house refuse is carried out anaerobic degradation, adopts step 302) described mode carries out leachate recirculation to the 4th reactor;
404) according to step 303) described in, open first reactor, in first reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
So circular flow.
Compared with prior art, beneficial effect of the present invention is:
(1) aerobic degradation, anaerobic degradation and accurate aerobic degradation have been realized with a bioreactor simultaneously, on the one hand, save the construction cost of equipment, on the other hand, make full use of the mutual supplement with each other's advantages of various degradations, accelerate the degradation speed of house refuse, shortened becoming thoroughly decomposed the time of house refuse, saved operating cost.
(2) first carry out aerobic degradation, can increase inside reactor temperature, promote the degraded of microorganism to rubbish; Carry out subsequently anaerobic degradation, fully Collection and use clean energy resource---biogas; Finally carry out accurate aerobic degradation, can accelerate rubbish and become thoroughly decomposed, efficient denitrification.
(3) combine by plural bioreactor, can realize the continuous processing of house refuse.
(4) by leachate equalization basin, the percolate of the bioreactor generation in different degradation period is mixed and recharged, not only can carry out pH adjusting and microbial inoculant, also realize dilution and the removal of pollutant in percolate, meanwhile, can effectively reduce the discharge capacity of percolate.
(5) utilize matured waste to cover, can realize the function of deodorizing and microbial inoculant.
(6) water-locator is connected with the effective flexible pipe of leachate recirculation, can facilitate garbage loading embeading operation, can also decline with rubbish sedimentation.
(7) bioreactor miniaturization, equipment, can conveniently transport and assemble, more flexible, can adapt to life in the countryside refuse production few, the feature that discharge disperses.
In sum, the present invention has realized the mutual supplement with each other's advantages of dissimilar bioreactor, has shortened the degradation time of house refuse, has reduced construction and operating cost, is conducive to promote the use of in rural area.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some novel embodiment of this use, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Four bioreactors that Fig. 1 provides for the embodiment of the present invention and the structure chart of a regulating reservoir;
The cutaway view that Fig. 2 is the bioreactor I-I face that provides in Fig. 1;
The cutaway view that Fig. 3 is the bioreactor II-II face that provides in Fig. 1.
In Fig. 1 to Fig. 3:
Reactor 1, reactor 2, reactor 3, reactor 4, submersible sewage pump 5, regulating reservoir 6, the first geotextiles 7, graded gravel layer 8, the second geotextiles 9, waste layer 10, old rubbish cover layer 11, water sealed tank 12, gas skirt 13, air guide port 14, water-locator 15, vent riser 16, horizontal ventilation duct 17, percolate discharge guiding pipe 18, leachate recirculation pipe 19, flexible pipe 20.
The specific embodiment
The invention provides the aerobic circulating processing method of a kind of bioreactor and house refuse Aerobic-anaerobic-standard, can effectively process house refuse, and reduced the time of investment and the house refuse degraded of equipment, be conducive to be promoted in rural area.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 to Fig. 3, four bioreactors that Fig. 1 provides for the embodiment of the present invention and the structure chart of a regulating reservoir; The cutaway view that Fig. 2 is the bioreactor I-I face that provides in Fig. 1; The cutaway view that Fig. 3 is the bioreactor II-II face that provides in Fig. 1.
The bioreactor providing in the present invention, it comprises: reactor 1, leachate equalization basin 6, gas skirt 13, percolate discharge guiding pipe 18, leachate recirculation pipe 19, water-locator 15, horizontal ventilation duct 17 and vent riser 16.
In said apparatus, reactor 1 is for loading house refuse, the device of degrading; Horizontal ventilation duct 17 is installed on the inner bottom of reactor 1, and two ends and the external world communicate, vent riser 16 is vertically arranged, and at right angle setting is on horizontal ventilation duct 17, be that vent riser 16 one end are connected with described horizontal ventilation duct 17, on horizontal ventilation duct 17 and vent riser 16, be equipped with some passages, be convenient to air and migrate to reactor 1, expand aerobic region.
In leachate equalization basin 6, be provided with submersible sewage pump 5, the delivery port of submersible sewage pump 5 is connected with water-locator 15 by leachate recirculation pipe 19, and water-locator 15 is arranged at the top of reactor.
One end of percolate discharge guiding pipe 18 is communicated with the bottom of reactor 1, for convenient discharge percolate, can by downward-sloping percolate discharge guiding pipe 18 installation, (water outlet height of percolate discharge guiding pipe 18 be lower than water inlet height, and the delivery port of percolate discharge guiding pipe 18 is higher than the maximum water level of described leachate equalization basin 6), the other end of percolate discharge guiding pipe 18 is connected with leachate equalization basin 6, for discharging percolate that reactor 1 produces to leachate equalization basin 6; After house refuse is packed in reactor 1, water-locator 15 is arranged in the top of house refuse, one end of leachate recirculation pipe 19 can be connected with water-locator 15 by flexible pipe 20, and the other end is connected with leachate equalization basin 6, for delivery of percolate to recharging operation.On percolate discharge guiding pipe 18, leachate recirculation pipe 19 and described horizontal ventilation duct 17, be equipped with switch valve, to end easily and conducting percolate discharge guiding pipe 18, leachate recirculation pipe 19 and described horizontal ventilation duct 17.
Water sealed tank 12 is arranged at the upper end of reactor 1, and gas skirt 13 is installed on water sealed tank 12, and covers at the open top end of reactor 1, offers exhaust outlet 14 on gas skirt 13, the methane that this exhaust outlet 14 produces for discharging house refuse degraded.
Bioreactor construction provided by the present invention and configuration are simple, convenient transportation, and use a bioreactor can realize the function of aerobic degradation, anaerobic degradation and three kinds of dissimilar bioreactors of accurate aerobic degradation simultaneously, take full advantage of three's advantage, solve problem separately, and can collect a large amount of methane gas, realize the recycling of house refuse, these have all greatly reduced investment and the operating cost of equipment aspect.Bioreactor adopts packaging design, transports to behind infield when equipment, can realize Assembling, has improved the flexibility of equipment, is conducive to promote widely in rural area.
Leachate equalization basin 6 is one, and reactor is to be arranged in around multiple of leachate equalization basin 6.In the present embodiment, reactor is four.As shown in Figure 1, be respectively reactor 1, reactor 2, reactor 3 and reactor 4.2 above reactors are arranged in to surrounding, at 1 public leachate equalization basin 6 of intermediate arrangement, not only facilitate percolate guide and recharge, the while also can reach the effect that the percolate of different degradation period mutually dilutes, neutralizes, inoculates.Multiple reactor alternate runs, realize house refuse continuously, circular treatment.Only, in first cycle, when first reactor enforcement first stage is recharged, carry out percolate pH adjusting and inoculation, after this no longer implement this operation.
Reactor bottom also comprises the first geotextiles 7, graded gravel layer 8 and the second geotextiles 9 from bottom to top successively, and percolate discharge guiding pipe 18 aligns with graded gravel layer 8, and horizontal ventilation duct 17 is installed on the second geotextiles 9 tops.The second geotextiles 9 tops are used for arranging waste layer 10, and waste layer 10 tops are used for arranging old rubbish cover layer 11, and water-locator 15 is arranged in old rubbish cover layer 11 tops.
Wherein the thickness of graded gravel layer 8 is about 200mm, and horizontal ventilation duct 17 is installed on the top of the second geotextiles 9, and the position of percolate discharge guiding pipe 18 and graded gravel layer 8 align.If percolate discharge guiding pipe 18 directly contacts and easily blocks percolate discharge guiding pipe 18 with house refuse, cause the discharge inconvenience of percolate, and after increase geotextiles and can completely cut off percolate discharge guiding pipe 18 and house refuse after graded gravel layer 8, and percolate is had to certain filtration.
In the present embodiment, percolate discharge guiding pipe 18 is in tilted layout, and the water outlet height of percolate discharge guiding pipe 18 is lower than water inlet height, and the delivery port of percolate discharge guiding pipe 18 is higher than the maximum water level of leachate equalization basin 6.Water-locator 15 adopts flexible pipe 20 to be connected with leachate recirculation pipe 19, the caliber >=100mm of percolate discharge guiding pipe 18, leachate recirculation pipe 19 and horizontal ventilation duct 17.
In order further to improve the air inlet of vent riser 16 and horizontal ventilation duct 17, ensuring sufficient air enters in house refuse, on vent riser 16 and horizontal ventilation duct 17, different punching rates is all set, be conducive to form the aerobic environment of Aerobic-anaerobic-standard around ventilation duct, accelerate the degraded of house refuse.
Due to, during house refuse is degraded, vent riser 16 and horizontal ventilation duct 17 contact with house refuse, and therefore, house refuse is likely stopped up the passage on horizontal ventilation duct 17 and vent riser 16.For this reason, in the present embodiment, be wrapped with one deck gauze or non-woven geotextile at horizontal ventilation duct 17 and vent riser 16.That gauze or non-woven geotextile are all breathed freely, can't affect the circulation of air, most importantly increased after one deck gauze or non-woven geotextile, by isolated to house refuse and horizontal ventilation duct 17 and vent riser 16, guaranteed that passage is all the time in opening.
The aerobic circulating processing method of house refuse Aerobic-anaerobic-standard provided by the invention specifically comprises the steps:
S01: the filling of house refuse;
Before filling house refuse, determine that percolate discharge guiding pipe 18 and leachate recirculation pipe 19 are in opening state, with adding house refuse in backward bioreactor, because the state procedure of house refuse is in open state, can guarantee that house refuse is in having the atmosphere of oxygen, house refuse is entered and can be realized aerobic degradation in filling process, increases the temperature of bioreactor inside, for microbial growth, breeding and metabolism create favorable conditions.In the present embodiment, the time of aerobic degradation was preset as about one month.
S02: the anaerobic degradation of house refuse;
After house refuse filling finishes, close horizontal ventilation duct 17, percolate discharge guiding pipe 18 and leachate recirculation pipe 19, add the old rubbish of one deck on the surface of house refuse, form old rubbish cover layer.Increase the deodorizing that the old rubbish cover layer of one deck is conducive to house refuse, can play in addition the effect of microbe inoculation, subsequently water-locator 15 is installed to the tectal surface of old rubbish, finally gas skirt 13 is installed on reactor, house refuse and outside air are isolated, carry out anaerobic degradation.
When house refuse is carried out after the anaerobic degradation of the first Preset Time, open percolate discharge guiding pipe 18 and leachate recirculation pipe 19, leachate collection, in leachate equalization basin 6, is now regulated the pH value of the percolate in leachate equalization basin 6, and inoculates methanogen.Start subsequently submersible sewage pump 5, percolate is transported in bioreactor through leachate recirculation pipe 19, be evenly distributed in house refuse by water-locator 15, accelerate the degraded of house refuse and the generation of methane, after having recharged, close percolate discharge guiding pipe 18 and leachate recirculation pipe 19, proceed degraded.In this period, so repeatedly carry out leachate recirculation, until bioreactor enters product methane phase.
Enter and produce after methane phase at bioreactor, after the second Preset Time, open percolate discharge guiding pipe 18 and leachate recirculation pipe 19, start submersible sewage pump 5 and carry out leachate recirculation operation, after having recharged, close percolate discharge guiding pipe 18 and leachate recirculation pipe 19, degrade, after this repeat to recharge operation every the second Preset Time.After the biogas of generation is fully collected, make full use of, utilize requirement until the methane gas producing in bioreactor does not reach.In the embodiment of the present invention, the lasting time in this stage was about about two months.
S03: the accurate aerobic degradation of house refuse;
House refuse completes after anaerobic degradation, take off gas skirt 13, and open horizontal ventilation duct 17, percolate discharge guiding pipe 18 and leachate recirculation pipe 19, now between the inner biodegradable heat of bioreactor and external environment, form internal-external temperature difference and produce natural power, impel air to pass through horizontal ventilation duct 17, vent riser 16 and percolate discharge guiding pipe 18, and the top of house refuse enters, and then around bottom, top layer and the ventilation duct of house refuse, form the environment of aerobic-anaerobic-anaerobism, to carry out accurate aerobic degradation.In order to guarantee that more air can enter bioreactor, contact with house refuse, the caliber of horizontal ventilation duct 17, vent riser 16 and percolate discharge guiding pipe 18 is all greater than 100mm.
House refuse is degraded after a period of time in the environment of aerobic-anaerobic-anaerobism, starts submersible sewage pump 5 house refuse is carried out to leachate recirculation operation, after this carries out a leachate recirculation operation every default the 3rd time.The time of accurate aerobic degradation is about one month, and the degraded of accurate aerobic degradation stage house refuse is very fast, completes after the degraded in this stage, and house refuse is become thoroughly decomposed substantially, and the cladding material that can be used as fertilizer or bioreactor uses.
S04: the reloading of house refuse.
The house refuse of becoming thoroughly decomposed in bioreactor is discharged, carry out post-processed, again in bioreactor, load house refuse subsequently.Meanwhile, retain suitable old rubbish, as the cover layer in anaerobic degradation stage.
In the aerobic circulating processing method of above-mentioned house refuse Aerobic-anaerobic-standard, in the process that house refuse is degraded, adopted aerobic degradation simultaneously, three kinds of modes of anaerobic degradation and accurate aerobic degradation, can start fast microbial degradation process, accelerate the degradation speed of house refuse, remove organic matter and nitrogen pollutant, not only can solve the phenomenon of organic acid and ammonia nitrogen accumulation in anaerobic degradation process, and can fully recycle the methane that can produce in domestic refuse anaerobic degradation process, realizing the bioreactor of various hearts has complementary advantages, greatly accelerate the degradation speed of house refuse, the time that bioreactor completes one-period is only about four months, shorten the degradation time of house refuse, being adapted at rural area uses.
In order to reach the object of continuous processing house refuse, in the process of carrying out house refuse degraded, can adopt multiple reactors and a leachate equalization basin 6 to degrade, and each reactor was opened in the suitable time, finally reach object continuous, circular treatment house refuse.In the time that the number of reactor is four, be an optimal technical scheme through evidence, can meet the few feature of generation in rural area.
In the time using four bioreactors, concrete mode of operation is as follows:
First reactor 1 is loaded, make house refuse carry out aerobic degradation during loading, the time is about one month.After house refuse has been loaded, reactor 1 is carried out to the anaerobic degradation of first stage, time is about 1 month, percolate is recharged before operation for the first time, first the percolate in leachate equalization basin 6 is carried out to pH adjusting, and inoculate methanogen, after methane fermentation process starts, enter the anaerobic degradation of second stage, in this stage, house refuse is further degraded, and producing a large amount of methane gas, the time is about 1 month.
Reactor 1 carries out the first stage and reactor 2 is carried out to house refuse filling when anaerobic degradation, and house refuse is carried out aerobic degradation in filling process, and the time is about one month.Reactor 1 is carried out to leachate recirculation, and the frequency of recharging is now greater than the frequency of recharging of recharging for the first time.
After aerobic degradation completes, reactor 2 is carried out to anaerobic degradation, the time is about two months, meanwhile, starts reactor 3 with reference to reactor 1, and reactor 3 is loaded to house refuse, makes it carry out aerobic degradation, and the time is about one month.
Reactor 1, after approximately bimestrial anaerobic degradation, is opened horizontal ventilation duct 17 and percolate discharge guiding pipe 18, and is taken off gas skirt, carries out accurate aerobic degradation, and the time is about one month.
When reactor 1 completes anaerobic degradation, reactor 3 completes aerobic degradation, now, reactor 3 is carried out to anaerobic degradation, and the time is about one month.When reactor 3 is carried out to anaerobic operation, start reactor 4, and it is carried out to house refuse filling, carry out aerobic degradation, the time is about one month.
Reactor 1 completes after accurate aerobic degradation, and the house refuse of having become thoroughly decomposed is discharged.When reactor 1 completes accurate aerobic degradation, reactor 2 completes anaerobic degradation, starts to carry out accurate aerobic degradation; Complete aerobic degradation and start reactor 4, start anaerobic degradation.Meanwhile, reactor 1 is carried out to house refuse filling, carry out aerobic degradation.
So circulation, continued operation.
Because the bioreactor landfill scale of processing domestic waste is large, investment and operating cost are also large, process house refuse amount many, and stabilization time are relatively long, is therefore not suitable for applying in rural area.But the present invention is by arranging the bioreactor of different model, domestic rubbish disposal demand that can suitable rural area different scales, and convenient transportation, simple to operate, running time is short, by a circulation of four the final formation of bioreactor combination, reach the object of continuous circulation processing house refuse.
Above-mentioned four bioreactors share a leachate equalization basin 6, only need be in first cycle, reactor 1 is implemented to the first stage while recharging, carrying out pH value regulates and microbial inoculant, after this, because the percolate that different phase can be produced is pooled in leachate equalization basin 6, realize the effects such as the adjusting of pH value, microbial inoculant and dilution, therefore regulate and microbial inoculant without manually carrying out again pH value.
What in this description, each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a bioreactor, for the processing of house refuse, is characterized in that, comprising:
Reactor;
Horizontal ventilation duct (17) and vent riser (16), on described horizontal ventilation duct (17) and vent riser (16), be equipped with some passages, described horizontal ventilation duct (17) is installed on the inner bottom of described reactor, and the two ends of described horizontal ventilation duct (17) are all connected with the external world, described vent riser (16) one end is connected with described horizontal ventilation duct (17), the other end is in communication with the outside, and described horizontal ventilation duct (17) and described vent riser (16) are all enclosed with one deck gauze or non-woven geotextile;
Leachate equalization basin (6), in described leachate equalization basin (6), be provided with submersible sewage pump (5), the delivery port of described submersible sewage pump (5) is connected with water-locator (15) by leachate recirculation pipe (19), and described water-locator (15) is arranged at the top of described reactor;
The percolate discharge guiding pipe (18) that one end is communicated with the bottom of described reactor, the other end of described percolate discharge guiding pipe (18) communicates with described leachate equalization basin (6), on described percolate discharge guiding pipe (18), leachate recirculation pipe (19) and described horizontal ventilation duct (17), is equipped with switch valve;
Be arranged at the water sealed tank (12) of described reactor upper end;
Be installed on described water sealed tank (12) upper, and cover at the gas skirt (13) of the open top end of described reactor, on described gas skirt (13), offer exhaust outlet (14).
2. bioreactor according to claim 1, is characterized in that, described leachate equalization basin (6) is one, and described reactor is for being arranged in around multiple of described leachate equalization basin (6).
3. bioreactor according to claim 1, it is characterized in that, described reactor bottom also comprises the first geotextiles (7), graded gravel layer (8) and the second geotextiles (9) from bottom to top successively, described percolate discharge guiding pipe (18) aligns with described graded gravel layer (8), and described horizontal ventilation duct (17) is installed on described the second geotextiles (9) top;
Described the second geotextiles (9) top is used for arranging waste layer (10);
Described waste layer (10) top is used for arranging that old rubbish cover layer (11), described water-locator (15) are arranged in described old rubbish cover layer (11) top.
4. bioreactor according to claim 1, it is characterized in that, described percolate discharge guiding pipe (18) is in tilted layout, and the water outlet height of described percolate discharge guiding pipe (18) is lower than water inlet height, and the delivery port of described percolate discharge guiding pipe (18) is higher than the maximum water level of described leachate equalization basin (6).
5. according to the bioreactor described in claim 1-4 any one, it is characterized in that the caliber >=100mm of described percolate discharge guiding pipe (18), described vent riser (16) and horizontal ventilation duct (17).
6. the aerobic circulating processing method of one way of life garbage aerobic-anaerobism-standard, is characterized in that, adopts bioreactor as claimed in claim 2 to process, and comprises the treatment step of first reactor:
1) open described horizontal ventilation duct and percolate discharge guiding pipe, in reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
2) after house refuse has been loaded, close horizontal ventilation duct, leachate recirculation pipe and percolate discharge guiding pipe, and gas skirt is installed, house refuse is carried out to anaerobic degradation;
3) complete after anaerobic degradation, open gas skirt, horizontal ventilation duct and percolate discharge guiding pipe, the path that air is formed by horizontal ventilation duct, vent riser, percolate discharge guiding pipe enters, the environment that now forms aerobic-anaerobic-anaerobism around bottom, top layer, horizontal ventilation duct and the vent riser of house refuse is degraded house refuse under accurate aerobic environment;
4) house refuse become thoroughly decomposed completely after discharging.
7. the aerobic circulating processing method of house refuse Aerobic-anaerobic-standard according to claim 6, is characterized in that described step 2) specifically comprise step:
21) complete after the filling of house refuse, water-locator is positioned on old rubbish cover layer, and by flexible pipe, leachate recirculation pipe is connected with water-locator;
22) close leachate recirculation pipe, horizontal ventilation duct and percolate discharge guiding pipe, and gas skirt is installed, start anaerobic degradation;
23) after degraded the first Preset Time, open percolate discharge guiding pipe, percolate is discharged into after regulating reservoir, close percolate discharge guiding pipe, regulate the pH value of percolate simultaneously, and inoculate methanogen;
24) will regulate pH value with submersible sewage pump, and inoculate the percolate after methanogen, recharge operation by leachate recirculation pipe and water-locator, after having recharged, close leachate recirculation pipe, continue anaerobic degradation operation;
25) reach after predetermined value at methane content and product methane speed, once recharge operation every the second Preset Time, after this regulate no longer separately pH value and inoculation methanogen.
8. the aerobic circulating processing method of house refuse Aerobic-anaerobic-standard according to claim 7, is characterized in that described step 21) further comprise step:
211) complete after the filling of house refuse, at the old rubbish of house refuse surface coverage one deck, form old rubbish cover layer, with to house refuse deodorizing, and microbe inoculation, accelerate the degraded of house refuse;
212) arrange water-locator at the tectal upper surface of old rubbish, by flexible pipe, leachate recirculation pipe is connected with water-locator.
9. the aerobic circulating processing method of house refuse Aerobic-anaerobic-standard according to claim 8, is characterized in that, in described step 3), house refuse is carried out accurate aerobic degradation and specifically comprised step:
31) house refuse is degraded after the 3rd Preset Time under accurate aerobic environment, starts submersible sewage pump and carries out leachate recirculation operation;
32) complete and once recharge after operation, close submersible sewage pump, repeat subsequently leachate recirculation operation, until house refuse is become thoroughly decomposed.
10. the aerobic circulating processing method of house refuse Aerobic-anaerobic-standard according to claim 9, is characterized in that, described leachate equalization basin is one, and described reactor is to be arranged in around multiple of described leachate equalization basin;
In described step 2) also comprise afterwards step:
201) according to described in step 1), open second reactor, in second reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
202) after second reactor charge finishes, by step 22) described airtight second reactor, house refuse is carried out anaerobic degradation, adopts step 23) described mode carries out leachate recirculation to second reactor;
203) adopting step 25) described mode carries out leachate recirculation to first reactor;
204) according to step 201) described in, open the 3rd reactor, in the 3rd reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
After described step 3), also comprise step:
301) adopting step 203) described mode carries out leachate recirculation to second reactor;
302) after the 3rd reactor charge finishes, by step 202) described airtight the 3rd reactor, house refuse is carried out anaerobic degradation, adopts step 202) described mode carries out leachate recirculation to the 3rd reactor;
303) according to step 201) described in, open the 4th reactor, in the 4th reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
After described step 4), also comprise step:
401) according to described in step 3), open second reactor, house refuse is degraded in accurate aerobic environment;
402) adopting step 301) described mode carries out leachate recirculation to the 3rd reactor;
403) after the 4th reactor charge finishes, by step 302) described airtight the 4th reactor, house refuse is carried out anaerobic degradation, adopts step 302) described mode carries out leachate recirculation to the 4th reactor;
404) according to step 303) described in, open first reactor, in first reactor, load house refuse, house refuse is carried out aerobic degradation in filling process;
So circular flow.
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| 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 |
| CN109622565B (en) * | 2017-02-11 | 2022-03-22 | 江翠珍 | Solid waste environmental protection processing system |
| CN107309250B (en) * | 2017-08-07 | 2019-04-23 | 成都理工大学 | Residents in rural community decentralized processing devices and methods therefor integrated with sanitary sewage |
| CN108037245B (en) * | 2017-12-18 | 2024-04-19 | 中铁科学研究院有限公司 | Experimental device for domestic waste landfill handles |
| CN109290332A (en) * | 2018-09-29 | 2019-02-01 | 湖南新九方科技有限公司 | A kind of pollution-free landfill disposal method in rural garbage |
| CN110355178A (en) * | 2019-06-25 | 2019-10-22 | 福建美天环保科技有限公司 | Small-sized kitchen garbage biological treatment device and method |
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| JP3700935B2 (en) * | 2001-12-26 | 2005-09-28 | 株式会社荏原製作所 | Anaerobic treatment method and apparatus |
| CN1923382A (en) * | 2006-07-07 | 2007-03-07 | 华中科技大学 | Domestic refuse anaerobic-aerobic reactor circulating operation landfill method |
| CN101823069A (en) * | 2009-11-26 | 2010-09-08 | 宇星科技发展(深圳)有限公司 | Fast treating device of biodegradable garbage |
| CN202606481U (en) * | 2012-01-06 | 2012-12-19 | 农业部沼气科学研究所 | Anaerobic-semi-aerobic bioreactor for treating domestic garbage |
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