CN109775930A - The processing method of landfill leachate based on GY-3 type filler matrix - Google Patents
The processing method of landfill leachate based on GY-3 type filler matrix Download PDFInfo
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Abstract
The present invention provides a kind of processing method of landfill leachate based on GY-3 type filler matrix, includes the following steps: 1) the first biochemical treatment: by landfill leachate by pretreatment after, into being handled in the filter bed for being provided with GY-3 type filler matrix；2) precipitation process: by step 1), treated that landfill leachate is passed through sedimentation basin is precipitated, and precipitating is discharged through bottom of pond；3) the second biochemical treatment: the landfill leachate handled through step 2) is passed through progress Anaerobic Treatment in anaerobic organism pond；4) filtration treatment: the qualified discharge after the waste water filtering of Anaerobic Treatment；Microorganism containing pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and Hyphomicrobiaceae in GY-3 type filler matrix.The processing method provided by the present invention realizes the purification discharge of landfill leachate by the degradation with GY-3 type filler matrix to organic matter in landfill leachate；Processing starting is efficiently quick, and the time is short, and treatment effect is stablized, and operation operation is easy.
Description
Technical field
The present invention relates to field of environment engineering technology, it particularly relates to a kind of rubbish based on GY-3 type filler matrix
The processing method of percolate.
Background technique
Currently, the method for China's garbage disposal mainly has sanitary landfills, burning and compost etc..Wherein it is with sanitary landfills
It is main, but sanitary landfills can generate secondary pollution --- landfill leachate.Landfill leachate concentration is high, and complicated component contains largely
" carcinogenic, teratogenesis, mutagenesis " compound and heavy metal etc., if not dealing carefully with, can polluted underground water, earth's surface drinking water source,
And high risks are caused to environment and human body.Therefore, the exploitation of landfill percolate processing technique, at China's solid refuse
Secondary pollution is prevented during reason, reduces pollutant emission, is accomplished that economic growth and environmental protection develop in harmony, is enhanced to ring
The support for protecting aspect is of great significance with construction.
Since the refuse leachate treatment technology in China is started late, there are many problems to need to learn and study.It is general at present
Store-through mainly has the treatment process of percolate relative complex in some problems, operation it is at high cost, percolate processing standard and
Specification is incomplete, and the core equipment localization rate of parts and components is low, and accessory products are difficult to effectively degradation etc..
Existing landfill leachate generally has the characteristics that organic concentration height, and heavy metal ion content is high, and ammonia nitrogen contains
Amount is high, and variation range is big, and trophic factor is out of proportion, brings difficulty to biological treatment.Due to landfill leachate have high BOD,
High COD, high electrolyte content and high viscosity and it is difficult to degrade the features such as, processing difficulty is big.At present for landfill leachate treatment
Main method has biological treatment, physical-chemical process, land treatment systems method, recharge method and group technology method.To landfill leachate
Processing, what not usually single facture was able to achieve.
The research of the landfill leachate treatment in China at present also in development, develop treatment effeciency height, economic operating cost,
Few, the easy to operate treatment process of occupied area is our target.For the treatment process of current landfill leachate, mainly
Based on bioremediation, nanofiltration (NF) and reverse osmosis treatment and use, which has stable, easy to operate and operation
The relatively good feature of effect.However, there are aerobic stage foams to be difficult to control and organic matter hardly possible in traditional bioremediation
With the problem for keeping the entire two-stage residence time long of degrading, the concentrated water hardness of nanofiltration and reverse osmosis generation is big, produces reusing rate
Low (produce reusing rate can only achieve 60%), NF concentrated water reuse equipment scaling phenomenon are serious, the good height of kinetic force and operation maintenance cost
The problems such as high, restricts its application.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes that a kind of rubbish based on GY-3 type filler matrix seeps
The processing method of filtrate, solve the problems, such as in current biological treatment organic matter be difficult to degrade, the aerobic stage processing time it is long, can
Rapidly and efficiently starting and intensive treatment landfill leachate realize that the collaboration removal of multi-pollutant and depth are net in landfill leachate
Change, good treatment effect is obtained under the conditions of low cost.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
On the one hand, the present invention provides a kind of processing method of landfill leachate based on GY-3 type filler matrix, including such as
Lower step:
1) the first biochemical treatment: after landfill leachate is passed through pretreatment, into the filter for being provided with GY-3 type filler matrix
It is handled in bed；
2) precipitation process: by step 1), treated that landfill leachate is passed through sedimentation basin is precipitated, and precipitates through bottom of pond
Discharge；
3) the second biochemical treatment: the landfill leachate handled through step 2) is passed through progress Anaerobic Treatment in anaerobic organism pond；
4) filtration treatment: the qualified discharge after the waste water filtering of Anaerobic Treatment；
Contain pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and life in the GY-3 type filler matrix
The microorganism of silk germ section.
Further, the GY-3 type filler matrix by 90~95 parts of primary filler matrix, is discarded according to parts by weight
After 5~10 parts of iron filings, 5~10 parts of adsorbent material mixing, stablize culture two days；
The primary filler matrix is prepared by cultivating in nitrobacteria culture medium after mixing mineralized waste and haydite
It obtains；The mass ratio of the mineralized waste and haydite is 1:(3~7).
It is of the present invention to cultivate at room temperature, in air；By cultivating, it can be achieved that following effect: making microorganism
It is attached to adsorbent material surface, the effect of adsorbent material is not only absorption and support, and in terms of biodegradable pollutant
It plays a role.The primary filler matrix incubation is as follows: mineralized waste and haydite being mixed and are placed on nitrobacteria culture
90~150S of soaking and stirring in base is mixed；Every three days, fresh nitrobacteria culture medium is replaced to mix, it is complete after culture 10 days
At.By cultivating, it can be achieved that following effect: 1, in right amount improve bacterial abundance, 2, microorganism is made to be attached to haydite surface, haydite
Effect be not only to adsorb and support, and also play a role in terms of biodegradable pollutant.The nitrobacteria culture medium
It can be conventional nitrobacteria culture medium.Preferably, the nitrobacteria culture medium are as follows: by ammonium sulfate 100~
300mg, 20~40mg of sodium bicarbonate, 0.05~2g of dipotassium hydrogen phosphate, 100~300mg of magnesium sulfate, 0.1~2mg of copper sulphate, sulphur
Sour 0.3~3mg of zinc and water 1L mixing after, adjust pH be 7~8 to get.The adsorbent material is activated coke or semicoke or active powdered carbon
Or combinations thereof；The adsorbent material partial size is 1~4mm.Adsorbent material adsorbs the organic matter in landfill leachate, is promoted organic
The residence time of object is promoted conducive to the degradation efficiency of the organic matter in waste water；The aperture of adsorbent material is bigger, is conducive to microorganism
Attachment.Preferably, the porosity of the GY-3 type filler matrix is 25~35%, and bulk density is 0.9~1.5g/cm3.It is excellent
Selection of land, the porosity are 30%, and bulk density is 0.9~1.5g/cm3.Preferably, false yellow in the GY-3 type filler matrix
Zygosaccharomyces Pseudoxanthomonas (affiliated Xanthomonas campestris section Xanthomonadaceae), Sphingomonas
Sphingomonas (affiliated sphingolipid unit cell Cordycepps Sphingomonadaceae), Comamonas Cordycepps Comamonadaceae and
Hyphomicrobiaceae Hyphomicrobiaceae abundance is respectively 12.73~15.69%, 12.29~15.52%, 8.82~
11.03% and 6.40~9.95%.The mineralized waste is to have filled 5~40 years in landfill yard, and it is big to reject wherein particle
In the stone of 10mm, cullet, not degradable rubber plastic and wooden stick, stationery, the mineralising rubbish of moisture content 20~36%
Rubbish；The microorganism of pseudo xanthomonas in the mineralized waste, Sphingomonas, Comamonas Cordycepps and Hyphomicrobiaceae
Abundance is respectively 12.73%, 12.29%, 8.82% and 6.40%.The haydite can be arbitrary haydite, can also refer to grain
Diameter is in 6~13mm, bulk density 0.9-1.5g/cm3, porosity be 0.3~0.7 haydite.The haydite is in spheroid shape.
The haydite can be by by clay powder, silica, calcium oxide or zeolite etc., high temperature after mixing with foaming agent, pore creating material, water
What calcining was prepared.Preferably, the discarded iron filings through overpickling, wash, dry processing after it is i.e. usable；The discarded iron
The granularity of bits is 5~10mm.
Further, the pretreatment, which refers to, introduces grille well for landfill leachate, carries out primary filter；Again through flyash
Zeolite carries out secondary filter.The grille well can retain the part hard-degraded substance in landfill leachate；The fine coal
Grey zeolite can by landfill leachate bulky grain and microorganism absorb and filter, conducive to the processing of subsequent filter bed, avoid pair
Filter bed results in blockage.
Further, the precipitating be directed to by added in step 1) treated landfill leachate flocculant,
Fenton oxidation agent, staticly settles after the completion.The flocculant adding procedure is as follows: sequentially adding acid mineral flocculating polymer
Agent, organic polymer coargulator, acid mineral high polymer coagulant, organic polymer coargulator the concentration that adds be respectively 100-
2000ppm, 1~5ppm.The acid mineral flocculating polymer medicament is bodied ferric sulfate, aluminium polychloride or combinations thereof.Institute
Stating organic polymer flocculation medicament is cationic polyacrylamide or anionic polyacrylamide.The Fenton oxidation agent added
Amount optionally removes the amount of COD, it is preferable that Fenton oxidation agent dosage is calculated with ppm, and dosage is as follows: H2O2(100%):
COD=1:1~5, Fe2+/H2O2(100%)=0.5~5.
Further, primary filler matrix is filled in the anaerobic organism pond, the primary filler matrix is by by mine
It cultivates and is prepared in nitrobacteria culture medium after change rubbish and haydite mixing；The mass ratio of the mineralized waste and haydite is
1:(3~7).
Further, the filtering, which refers to, handles landfill leachate by the ceramic membrane cisterna equipped with ceramic film component
After discharge.
Further, before the filtering emission, COD situation is detected, if up to standard, is discharged after filtering；If it does not meet the standards, then it returns
It returns in the filter bed of step 1) and handles again.If pH is too low in waste water before filtering, then liquid alkaline is added into waste water or milk of lime is adjusted
High polymer coagulant, qualified discharge after flocculating setting are added in pH6~9.Preferably, the high polymer coagulant is polyacrylamide
Amine.The additive amount of the high polymer coagulant is 1~10ppm.
On the other hand, the present invention also provides a kind of processing system of landfill leachate based on GY-3 type filler matrix,
Including grille well, coal ash zeolite filtering ponds, filter bed, sedimentation basin, anaerobic organism pond and the ceramic membrane cisterna being sequentially communicated,
The filter bed includes the filler matrix layer being made of GY-3 type filler matrix；
Contain pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and life in the GY-3 type filler matrix
The microorganism of silk germ section.
Further, the water outlet in the anaerobic bio-treated pond is connected to ceramic membrane cisterna all the way, another way be connected to filter bed into
The mouth of a river.
Further, the upper layer of the coal ash zeolite filtering ponds is provided with one layer of palm fibre pad, seeps by the rubbish of grille well
Filtrate is by water distributor water distribution uniformity on the upper layer of coal ash zeolite filtering ponds.By the filtering of palm fibre pad, flyash can be improved
The filter effect in zeolite filtration pond.Matrix in the coal ash zeolite filtering ponds is coal ash zeolite, and partial size is less than
5cm。
Further, the filter bed further includes water distributor, ventilation duct, supporting layer and drainage pipeline；The supporting layer setting
In side of the filler matrix layer far from water distributor；The drainage pipeline is arranged between the supporting layer；On the drainage pipeline
It is provided with and collects hole；The ventilation duct is vertically distributed in inside filter bed indirectly；The ventilation duct upper end is higher by filter bed surface, lower end
By filler matrix layer and extend to supporting layer.Preferably, water distributor is evenly distributed on filter bed surface, parallelly distribute on, internal diameter
For 20mm, the spacing between water distributor is 1m two-by-two.Ventilation duct is evenly distributed in filter bed, parallelly distribute on, internal diameter 10mm,
The spacing between ventilation duct is 1m two-by-two；Ventilation duct has ventilation hole.Drainage pipeline is evenly distributed on supporting layer bottom, and parallel point
Cloth, internal diameter 20cm, the spacing of drainpipe between any two are 1m.The removal effect of pollutant with the increase of filter bed height and
Increase, for filler matrix layer height between 60-80mm, treatment effect reaches peak, 90% or more ammonia nitrogen removal frank, COD removal
85% or more rate, when filter bed height is more than 1m, treatment effect reaches stationary value.Preferably, the supporting layer includes rubble, ovum
The minerals coagulation such as stone or gravel；The partial size of minerals coagulation (rubble, cobble or gravel etc.) in the supporting layer is 1
~5cm.Preferably, the filler matrix layer is with a thickness of 0.4~0.9 times of filter bed height.Preferably, the thickness of the supporting layer
It is 0.01~0.2 times of filter bed height.Above-mentioned filter bed, it is preferred that the height of the filter bed is 0.9m~1.5m；The filler
Hypothallus with a thickness of 0.6m~1.0m；The supporting layer with a thickness of 30~50mm.Preferably, sewage load and filter bed
Area ratio is 1:1-3:1, and a height of 0.9-1.5m, specific ratio need to be selected according to sewage treatment process and concentration of wastewater.
Further, the top of the sedimentation basin is provided with the delivery device of Fenton reagent, the examination of the delivery device
Agent is launched pipe and is goed deep into sedimentation basin, conducive to the processing of landfill leachate.
It is (affiliated containing pseudo xanthomonas Pseudoxanthomonas in the filler matrix and primary filler matrix
Xanthomonas campestris section Xanthomonadaceae), Sphingomonas Sphingomonas (affiliated sphingolipid unit cell Cordycepps
Sphingomonadaceae), Comamonas Cordycepps Comamonadaceae is (for example, Comamonas terrigena, aquatic feathering list
Born of the same parents bacterium, Comamonas testosteroni etc.) and Hyphomicrobiaceae Hyphomicrobiaceae all have stronger ammoxidation function,
Processing for subsequent landfill leachate provides good basis, directlys adopt mineralized waste and is cultivated with haydite, removes from complicated numerous
It the step of trivial inoculation, culture functional microorganism, is simple and efficient.
The balance, it can be achieved that microorganism is cultivated by stablizing primary filler matrix and iron filings and adsorbent material, guarantees to fill out
Expect the stabilization treatment effect of matrix.
Pseudo xanthomonas, Sphingomonas, Hyphomicrobiaceae can organic matter in efficient degradation landfill leachate,
Purify landfill leachate；
Comamonas Cordycepps can effectively reduce organic matter in landfill leachate, such as cellulose, ammonia and nitrogen organic etc.；
Comamonas Cordycepps and Hyphomicrobiaceae effectively can carry out deodorization etc. to landfill leachate.
The filter bed provided by the invention for being provided with GY-3 type filler matrix, has effects that as follows:
(1) firstly, the primary filler matrix during the cultivation process, is sufficiently mixed culture medium with material, was cultivating
So that functional microorganism is attached to haydite surface rapidly in journey, entered inside haydite by porous structure, and then fast enriching function
Microorganism is conducive to subsequent efficient removal pollutant；Haydite, adsorbent material, discarded iron filings in the filler matrix can increase
The skeleton structure of matrix effectively avoids filter bed from as sedimentation and clogging caused by compacting, significantly improving during the work time
Water resistant power impact capacity in the course of work；Microbe in filler matrix has interception and suction-operated, and
The porous bring large specific surface area of haydite is conducive to the aggregation of microorganism and the formation of biomembrane, and then promotes biomembrane to pollution
The katabolism function of object；Filler matrix increases lower water speed since the presence of haydite increases the porosity of compounded mix,
Under the premise of not changing processing water, occupied area can be reduced by increasing filter bed height.In addition, the mineralising in filler matrix
Rubbish itself has large specific surface area, loose structure, preferable hydraulic conductivity and permeance property, can be conducive to the place of percolate
Reason.
(2) secondly, some pollutants hair in discarded iron filings, adsorbent material and landfill leachate in the filler matrix
Raw reduction reaction, can be improved the biodegradability of percolate；As the corrosion oxidation of iron enhances, the part ammonia nitrogen in percolate
It is oxidized removal；Ferrous ion realized under microbial action it is dual ammonia nitrogen, phosphorus etc. are removed, reduce the COD of percolate
And ammonia nitrogen；
(3) third further includes adsorbent material in the filler matrix, and the aperture of adsorbent material is more, and organic matter is attracted to
Surface extends residence time of the hardly degraded organic substance in filler matrix, so that microorganism is decomposed organic matter abundant；Absorption
Material itself occupies certain proportion, can play a supporting role；Adsorbent material is in the stabilization incubation of filler matrix and locates
Manage percolate during, can load extra bacterium, can further progress biochemical treatment, secondary use microorganism, processing
It is high-efficient.
Compared with the prior art, the advantages of the present invention are as follows:
The processing method of a kind of landfill leachate based on GY-3 type filler matrix provided by the invention, first by locating in advance
Reason, suspended matter, the larger particles in landfill leachate are filtered, in case subsequent cause etc. to influence on biochemical treatment；Pass through
Organic matter, ammonia nitrogen etc. in landfill leachate is carried out microbial degradation by the first biochemical treatment, and biochemical reaction can be quickly high
The starting of effect, organic matter, ammonia nitrogen in the landfill leachate that can degrade, moreover it is possible to Adsorption foul smell, it can remove 80% substantially~
90% ammonia nitrogen, quickly reduces COD；By precipitation process, can by the organic matter of charged particle, degradation in landfill leachate,
Heavy metal ion etc. is stablized, and flocculation sedimentation is formed, and provides condition for subsequent second of biochemical treatment and film filtering；Pass through
Second of biochemical treatment is further degraded complete ammonia nitrogen untreated in landfill leachate, small organic molecule, by rubbish
Some free radicals in rubbish percolate are decomposed, and the coloration of landfill leachate is reduced, and remove foul smell, are reached and are further lowered ammonia
The effect of nitrogen, COD and BOD, while part metals ion and salt are adsorbed；Reach discharge standard after filtering by film.
The processing system of landfill leachate provided by the invention based on GY-3 type filler matrix, firstly, processing system its
Have the advantages that filter bed, filter bed have the advantages that filler matrix layer, filler matrix layer is located at the top of filter bed, subsequent also sharp
It is handled in renovation；In addition supporting layer can effectively support entire filter bed, conducive to the discharge of the good water of subsequent processing.Secondly, special
Filler matrix in filter bed and anaerobic organism pond, the microorganism proportion processing landfill leachate by science, is conducive to removal ammonia nitrogen
Pollution reduces effluent color dilution, greatly promotes effluent quality.Third, by the filtration treatment metal ion and salt of ceramic membrane cisterna,
Treated clear water qualified discharge.
Processing method of the invention greatly shortens residence time of landfill leachate during biochemical treatment (by original
The monomer residence time 48 hours or more, shorten to 12 it is small within), improve operational efficiency, while also reducing ceramic film process
Load can extend the service life of ceramic membrane, reduce cost.
Filter bed and anaerobic organism pond are opened when handling landfill leachate in processing system and processing method of the present invention
Dynamic quick (function of microorganism can be fast implemented after functional microorganism enrichment), structure is simple, and convenient for construction, device requirement is few,
Easy to operate, stable, maintenance cost is low, avoids secondary pollution, and securely and reliably, effective improvement bacteria bed blocking is asked
Topic extends service life and improves practicability simultaneously, and ammonia nitrogen removal frank reaches 90% or more, COD removal rate and reaches 85% or more,
BOD processing reaches 75%, and above, COD aqueous concentration is less than 50mg/L, and ammonia nitrogen aqueous concentration is less than 5mg/L.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the processing method flow chart of the preferred embodiment of the present invention.In Fig. 1,1: grille well, 2: coal ash zeolite filtering
Pond, 3: filter bed, 4: sedimentation basin, 5: anaerobic organism pond, 6: ceramic membrane cisterna, A: water inlet, B: water outlet.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
The pollution problem of breeding wastewater employed in following embodiment causes very severe to the ecological environment on periphery
Influence.
Embodiment 1
GY-3 type filler matrix, preparation process are as follows:
1) selection has filled 5~40 years in landfill yard, and reject wherein particle greater than the stone of 10mm, cullet, not
After the sundries such as degradable rubber plastic and wooden stick, stationery, the mineralized waste of moisture content 20~36%；The mineralized waste
Middle pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps Comamonadaceae and Hyphomicrobiaceae
Hyphomicrobiaceae abundance is up to 12.73%, 12.29%, 8.82% and 6.40% respectively.
2) selection is in spheroid shape, and partial size is in 6~13mm, bulk density 0.9-1.5g/cm3, porosity be 0.3~
0.7 haydite；
3) in mass ratio it is 1:(3~7 by mineralized waste and haydite) it mixes to be placed on to impregnate in nitrobacteria culture medium and stir
150S is mixed, is mixed；Every three days, it replaces fresh nitrobacteria culture medium to mix, after culture 10 days, completes primary filler base
Matter；Pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and Hyphomicrobiaceae abundance in the primary filler matrix
Respectively 12.73~15.69%, 12.29~15.52%, 8.82~11.03% and 6.40~9.95%.The nitrobacteria
Culture medium are as follows: by ammonium sulfate 300mg, sodium bicarbonate 40mg, dipotassium hydrogen phosphate 0.05g, magnesium sulfate 100mg, copper sulphate 0.1mg,
Zinc sulfate 0.3mg and water 1L mixing after, adjust pH be 7~8 to get.
4) screening partial size is handled discarded iron filings with 13% dilute hydrochloric acid in the discarded iron filings of 5~10mm, removes iron
After rust, cleaning is dried stand-by.It is stand-by to screen adsorbent material of the partial size in 1~4mm.Adsorbent material can be activated coke.
5) according to parts by weight, by 90~95 parts of primary filler matrix, discarded 5~10 parts of iron filings, 5~10 parts of adsorbent material
Carry out it is uniformly mixed, culture stablize 2 days after, complete the preparation of filler matrix.
The porosity of gained filler matrix is 25~35%, and bulk density is 0.9~1.5g/cm3.In the filler matrix
Xanthomonas, sphingolipid Pseudomonas, Comamonas Cordycepps and Hyphomicrobiaceae abundance be respectively 12.73~15.69%, 12.29
~15.52%, 8.82~11.03% and 6.40~9.95%.
Embodiment 2
Primary filler matrix preparation process is as follows:
1) selection has filled 5~40 years in landfill yard, and reject wherein particle greater than the stone of 10mm, cullet, not
After the sundries such as degradable rubber plastic and wooden stick, stationery, the mineralized waste of moisture content 20~36%；The mineralized waste
Middle pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps Comamonadaceae and Hyphomicrobiaceae
Hyphomicrobiaceae abundance is up to 12.73%, 12.29%, 8.82% and 6.40% respectively.
2) selection is in spheroid shape, and partial size is in 6~13mm, bulk density 0.9-1.5g/cm3, porosity be 0.3~
0.7 haydite；
3) in mass ratio it is 1:(3~7 by mineralized waste and haydite) it mixes to be placed on to impregnate in nitrobacteria culture medium and stir
150S is mixed, is mixed；Every three days, it replaces fresh nitrobacteria culture medium to mix, after culture 10 days, completes primary filler base
Matter；Pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and Hyphomicrobiaceae abundance in the primary filler matrix
Respectively 12.73~15.69%, 12.29~15.52%, 8.82~11.03% and 6.40~9.95%.The nitrobacteria
Culture medium are as follows: by ammonium sulfate 300mg, sodium bicarbonate 40mg, dipotassium hydrogen phosphate 2g, magnesium sulfate 300mg, copper sulphate 2mg, zinc sulfate
3mg and water 1L mixing after, adjust pH be 7~8 to get.
The porosity of gained primary filler matrix is 25~35%, and bulk density is 0.9~1.5g/cm3.The primary is filled out
Xanthomonas in material matrix, sphingolipid Pseudomonas, Comamonas Cordycepps and Hyphomicrobiaceae abundance be respectively 12.73~
15.69%, 12.29~15.52%, 8.82~11.03% and 6.40~9.95%.
Embodiment 3
A kind of filter bed, the filter bed are successively constituted including water distributor, by filler matrix described in embodiment 1 from top to bottom
Filler matrix layer, supporting layer and drainage pipeline and ventilation duct, the ventilation duct is vertically distributed in inside filter bed indirectly；It is described
Ventilation duct upper end is higher by filter bed surface, and lower end passes through filler matrix layer and extends to supporting layer；The drainage pipeline is arranged in institute
It states between supporting layer；It is provided on the drainage pipeline and collects hole；Water distributor is evenly distributed on filter bed surface, parallelly distribute on,
Internal diameter is 20mm, and the spacing between water distributor is 1m two-by-two；Ventilation duct is evenly distributed in filter bed, parallelly distribute on, and internal diameter is
10mm, the spacing between ventilation duct is 1m two-by-two；Drainage pipeline is evenly distributed on supporting layer bottom, parallelly distribute on, and internal diameter is
20cm, the spacing of drainpipe between any two are 1m；The removal effect of pollutant increases, filler base with the increase of filter bed height
Matter layer height is between 60-80mm, and treatment effect reaches peak, 90% or more ammonia nitrogen removal frank, 85% or more COD removal rate,
When filter bed height is more than 1m, treatment effect reaches stationary value；
The supporting layer includes the minerals coagulation such as rubble, cobble or gravel；Minerals condensation in the supporting layer
The partial size of object (rubble, cobble or gravel etc.) is 1~5cm；
The filler matrix layer is with a thickness of 0.4~0.9 times of filter bed height.Preferably, the supporting layer with a thickness of filter
0.01~0.2 times of bed height.Above-mentioned filter bed, it is preferred that the height of the filter bed is 0.9m~1.5m；The filler matrix
Layer with a thickness of 0.6m~1.0m；The supporting layer with a thickness of 30~50mm.Preferably, the area of sewage load and filter bed
Than for 1:1-3:1, a height of 0.9-1.5m, specific ratio need to be selected according to sewage treatment process and concentration of wastewater.
Embodiment 4
Anaerobic organism pond successively includes water distributor, is made of primary filler matrix as described in example 2 from top to bottom
Filler matrix layer, supporting layer and drainage pipeline；The drainage pipeline is arranged between the supporting layer；It is set on the drainage pipeline
It is equipped with and collects hole；
The supporting layer includes the minerals coagulation such as rubble, cobble or gravel；Minerals condensation in the supporting layer
The partial size of object (rubble, cobble or gravel etc.) is 1~5cm；
Preferably, the height in the anaerobic organism pond is 0.9m~1.5m；The filler matrix layer with a thickness of 0.6m~
1.0m；The supporting layer with a thickness of 30~50cm.
Embodiment 5
The processing system of landfill leachate based on GY-3 type filler matrix, including grille well, the flyash being sequentially communicated
Zeolite filtration pond, filter bed described in embodiment 3, sedimentation basin, anaerobic organism pond as described in example 4 and ceramic membrane cisterna,
The water outlet in the anaerobic bio-treated pond is connected to ceramic membrane cisterna all the way, and another way is connected to filter bed water inlet；
The upper layer of the coal ash zeolite filtering ponds is provided with one layer of palm fibre pad, passes through cloth by the landfill leachate of grille well
Water pipe water distribution uniformity is on the upper layer of coal ash zeolite filtering ponds；Matrix in the coal ash zeolite filtering ponds is flyash boiling
Stone, partial size are less than 5cm.
The top of the sedimentation basin is provided with the delivery device of Fenton reagent, and the reagent of the delivery device launches Guan Shen
Enter in sedimentation basin, conducive to the processing of landfill leachate.
It is handled with the system, process is as follows:
Pretreatment: the landfill leachate that garbage loading embeading area generates is catchmented through dedicated collection conduit by mechanical grille remittance
Conditioning tank, this process retain some hard-degraded substances and bulky grain；Two are carried out using coal ash zeolite filtering ponds
Suspended matter (the especially not degradable position of macromolecular), larger particles in landfill leachate adsorbed by secondary filtering
Filter, especially palm fibre pad can carry out the retention of bulky grain, can be conducive to the raising of subsequent biochemical treatment effeciency, effectively prevent foam
It generates；This treatment process about 0.5-1h；
First time biochemical treatment: pretreated landfill leachate is discharged into filter bed described in embodiment 3, passes through water distributor
It is evenly distributed on filter bed surface, the absorption through microbial degradation, adsorbent material in filler matrix in filter bed effectively removes rubbish
Organic matter and ammonia nitrogen in rubbish percolate, meanwhile, haydite and adsorbent material in filler matrix can be used as the support of filler matrix
Skeleton guarantees the lower water speed of filter bed while increasing porosity；Iron filings therein can not only remove part ammonia nitrogen, and can play branch
Support skeleton function；Sewage Disposal treating capacity and the area ratio of filter bed are 1:1, a height of 1.3m, and wherein the thickness of filler is about
0.9m, compounded mix bulk density are 1.3；This process can avoid secondary pollution without adding any reagent and carbon source；This
Treatment process about 15~30min；
Precipitation process: 80~90% ammonia nitrogen and big is eliminated by the landfill leachate after first time biochemical treatment substantially
Amplitude reduction COD；Again by being precipitated with flocculant after, handled with Fenton reagent further progress COD, it is heavy to stand
It forms sediment and separates；Charged particle therein and ammonia nitrogen are further processed by this process, obtain effect outstanding；This treatment process is big
About 6~8h；Include its original reaction time and precipitation and separation time.
Second of biochemical treatment: processed landfill leachate is discharged into anaerobic organism pond as described in example 4, passes through cloth
Water pipe is evenly distributed on anaerobic organism pool surface, by the microbial degradation of primary filler Medium Culture, the absorption of adsorbent material, has
Organic matter and ammonia nitrogen in effect removal landfill leachate, meanwhile, the haydite in filler matrix can be used as the support rib of filler matrix
Frame guarantees the lower water speed of filter bed while increasing porosity；Sewage Disposal treating capacity and the area ratio of filter bed are 1:1, a height of
1.3m, wherein the thickness of filler is about 0.9m, and compounded mix bulk density is 1.3；It handles by this step, it can be achieved that COD is dense
Degree basically reaches discharge standard, and treatment effect is greatly improved；This treatment process about 15~30min；
Filtration treatment: the landfill leachate after separation is through detecting COD situation, if up to standard, through ceramic membrane cisterna filtering emission；
Filter this treatment process about 4~8h；If it does not meet the standards, then it returns and is handled again in biochemical filter bed for the first time.If before filtering, giving up
PH is too low in water, then adds liquid alkaline into waste water or milk of lime adjusts pH6~9, add high polymer coagulant, reach after flocculating setting
Mark discharge.Preferably, the high polymer coagulant is polyacrylamide.The additive amount of the high polymer coagulant be 1~
10ppm。
Embodiment 6
A kind of application of the system of embodiment 5 in processing landfill leachate, application process are as follows:
The percolate that Jiangxi Province Wannian County garbage stacking yard generates, water quality such as table 1, sewage treatment scale are 150m3/d。
The landfill leachate that garbage loading embeading area generates, which is imported through dedicated collection conduit by mechanical grille, to catchment conditioning tank, using being
Enter filter bed after column processing: Sewage Disposal treating capacity and the area ratio of filter bed are 1:1, a height of 1.3m, wherein the thickness of filler
About 0.9m, compounded mix bulk density are 1.3.Compared to traditional handicraft, using effect such as 2 institute of table of the embodiment of the present invention 4
Show, main water quality indicator reaches limit value as defined in GB16889-2008 " household refuse landfill sites contamination control standard ", smoothly
It checks and accepts, while greatly reducing subsequent film processing cost.
1: ten thousand year certain landfill leachate water quality unit of table: mg/litre (except pH)
| Item argument | Influent concentration value | Effluent criteria |
| COD | ≧10000 | 60 |
| Ammonia nitrogen | ≧2000 | 8 |
| SS | ≧800 | 30 |
| Total nitrogen | ≧2000 | 30 |
| PH | 6-9 | 6-9 |
Table 2 is using based on of the invention 10000 years certain landfill leachate treatment engineering actual effect
| Handle index | Traditional handicraft | The present embodiment |
| COD removal rate (%) | >98 | >99.8 |
| Effluent COD concentration (mg/L) | 50~200 | <20 |
| Ammonia nitrogen removal frank (%) | >99 | >99.75 |
| It is discharged ammonia nitrogen concentration (mg/L) | 7~20 | <5 |
| SS removal rate (%) | >90 | >97.5 |
| SS aqueous concentration (mg/L) | 30~80 | <20 |
| Membrane module replacement frequency (times/year) | 3~5 | <1 |
| Processing cost (yuan/ton water) | 45~60 | <35 |
Removal rate parameter selection explanation: three of the above parameter is to influence water quality key value, so only when calculating removal rate
Three parameters of COD/SS/ ammonia nitrogen are chosen to be analyzed.
Embodiment 7
A kind of application of the system of embodiment 5 in processing landfill leachate, application process are as follows:
The percolate that Jiangxi Province Qianshan County garbage stacking yard generates, water quality such as table 3, sewage treatment scale are 100m3/d。
Landfill leachate imports the conditioning tank that catchments by mechanical grille through dedicated collection conduit, filters using entering after series of processes
Bed: Sewage Disposal treating capacity and the area ratio of filter bed are 1:1, and a height of 1.3m, wherein the thickness of filler is about 0.9m, compound to fill out
Expect that bulk density is 1.3.Compared to traditional handicraft, the effect using the embodiment of the present invention 4 is as shown in table 4, main water quality indicator
Reach limit value as defined in GB16889-2008 " household refuse landfill sites contamination control standard ", engineering is smoothly checked and accepted.
Table 3: Qianshan landfill leachate water quality unit: mg/litre (except pH)
| Item argument | Influent concentration value | Effluent criteria |
| COD | ≧8000 | 60 |
| Ammonia nitrogen | ≧1500 | 8 |
| SS | ≧900 | 30 |
| Total nitrogen | ≧1500 | 30 |
| PH | 6-9 | 6-9 |
Table 4 is using based on Qianshan landfill leachate treatment engineering actual effect of the invention
| Handle index | Traditional handicraft | The present embodiment |
| COD removal rate (%) | >97.5 | >99.77 |
| Effluent COD concentration (mg/L) | 50~200 | <18 |
| Ammonia nitrogen removal frank (%) | >98.66 | >99.6 |
| It is discharged ammonia nitrogen concentration (mg/L) | 7~20 | <6 |
| SS removal rate (%) | >91.11 | >98 |
| SS aqueous concentration (mg/L) | 30~80 | <18 |
| Membrane module replacement frequency (times/year) | 3~5 | <1 |
| Processing cost (yuan/ton water) | 45~55 | <32 |
Removal rate parameter selection explanation: three of the above parameter is to influence water quality key value, so only when calculating removal rate
Three parameters of COD/SS/ ammonia nitrogen are chosen to be analyzed.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of processing method of the landfill leachate based on GY-3 type filler matrix, which comprises the steps of:
1) the first biochemical treatment: by landfill leachate by pretreatment after, into being provided in the filter bed of GY-3 type filler matrix
Processing；
2) precipitation process: by step 1), treated that landfill leachate is passed through sedimentation basin is precipitated, and precipitating is discharged through bottom of pond；
3) the second biochemical treatment: the landfill leachate handled through step 2) is passed through progress Anaerobic Treatment in anaerobic organism pond；
4) filtration treatment: the qualified discharge after the waste water filtering of Anaerobic Treatment；
It is micro- containing pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and raw silk in the GY-3 type filler matrix
The microorganism of Cordycepps.
2. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
The GY-3 type filler matrix, according to parts by weight, by 90~95 parts of primary filler matrix, discarded 5~10 parts of iron filings, adsorption material
After 5~10 parts of mixing of material, stablize culture two days；
The primary filler matrix is prepared by cultivating in nitrobacteria culture medium after mixing mineralized waste and haydite；
The mass ratio of the mineralized waste and haydite is 1:(3~7).
3. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
The pretreatment, which refers to, introduces grille well for landfill leachate, carries out primary filter；Secondary filter is carried out through coal ash zeolite again.
4. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
The precipitating is directed to by adding flocculant, Fenton oxidation agent in step 1) treated landfill leachate, quiet after the completion
Set precipitating.
5. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
Primary filler matrix is filled in the anaerobic organism pond, after the primary filler matrix is by mixing mineralized waste and haydite
It cultivates and is prepared in nitrobacteria culture medium；The mass ratio of the mineralized waste and haydite is 1:(3~7).
6. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
It is described filtering refer to by landfill leachate by equipped with ceramic film component ceramic membrane cisterna handled after discharge.
7. the processing method of the landfill leachate according to claim 1 based on GY-3 type filler matrix, which is characterized in that
Before the filtering emission, COD situation is detected, if up to standard, is discharged after filtering；If it does not meet the standards, then return step 1) filter bed in
It handles again.
8. a kind of processing system of the landfill leachate based on GY-3 type filler matrix, which is characterized in that including what is be sequentially communicated
Grille well, coal ash zeolite filtering ponds, filter bed, sedimentation basin, anaerobic organism pond and ceramic membrane cisterna,
The filter bed includes the filler matrix layer being made of GY-3 type filler matrix；
It is micro- containing pseudo xanthomonas, Sphingomonas, Comamonas Cordycepps and raw silk in the GY-3 type filler matrix
The microorganism of Cordycepps.
9. the processing system of the landfill leachate according to claim 8 based on GY-3 type filler matrix, which is characterized in that
The water outlet in the anaerobic bio-treated pond is connected to ceramic membrane cisterna all the way, and another way is connected to filter bed water inlet；
The upper layer of the coal ash zeolite filtering ponds is provided with one layer of palm fibre pad, passes through water distributor by the landfill leachate of grille well
Water distribution uniformity is on the upper layer of coal ash zeolite filtering ponds；
The top of the sedimentation basin is provided with the delivery device of Fenton reagent, and it is deeply heavy that the reagent of the delivery device launches pipe
In the pond of shallow lake, conducive to the processing of landfill leachate.
10. the processing system of the landfill leachate according to claim 8 based on GY-3 type filler matrix, feature exist
In the filter bed further includes water distributor, ventilation duct, supporting layer and drainage pipeline；The supporting layer setting is remote in filler matrix layer
Side from water distributor；The drainage pipeline is arranged between the supporting layer；It is provided on the drainage pipeline and collects hole；Institute
Ventilation duct is stated vertically to be distributed in inside filter bed indirectly；The ventilation duct upper end is higher by filter bed surface, and lower end passes through filler matrix layer
And extend to supporting layer.
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