CN108298760A - Townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus and its technique - Google Patents
Townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus and its technique Download PDFInfo
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000012546 transfer Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 36
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 31
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 22
- 239000001301 oxygen Substances 0.000 claims abstract description 123
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 123
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000010802 sludge Substances 0.000 claims abstract description 46
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 claims abstract description 34
- 238000009388 chemical precipitation Methods 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 32
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 230000001112 coagulating effect Effects 0.000 claims abstract description 24
- 239000006228 supernatant Substances 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 5
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000020477 pH reduction Effects 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 7
- 238000006555 catalytic reaction Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005345 coagulation Methods 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 4
- 238000003379 elimination reaction Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 244000005700 microbiome Species 0.000 claims description 4
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 244000144985 peep Species 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000003892 spreading Methods 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 238000011109 contamination Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000011049 filling Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 230000032258 transport Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 239000000701 coagulant Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000010813 municipal solid waste Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000003851 biochemical process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 241000108664 Nitrobacteria Species 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000000703 anti-shock Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 239000010782 bulky waste Substances 0.000 description 1
- 239000000149 chemical water pollutant Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus and its techniques.Transfer station percolate initially enters UASB and carries out effectively hydrolyzing acidification and anaerobic methane production, supernatant enters the micro- oxygen biochemical system progress high efficiency synchronous removal of carbon and nitrogen of multistage after low C/N anaerobism biogas slurry flows through primary sedimentation tank, bio-chemical effluent supernatant after secondary settling tank enters coagulating basin and carries out depth control carbon denitrogenation dephosphorizing, then effluent quality reaches after the mud-water separation of physico-chemical precipitation pond《Consumer waste filling and embedding contamination control standard》2 standard of (GB16889 2008) table；The materialized mud that the excess sludge and coagulating basin that UASB and novel removal of carbon and nitrogen system generate generate transports outward disposition after entering sludge filter press filter-press dehydration together；The exhaust gas that UASB, novel removal of carbon and nitrogen system and coagulating basin generate enters qualified discharge after exhaust treatment system processing.The present invention has removal of carbon and nitrogen efficient, and capacity of resisting impact load is strong, and operating cost is low, and the residence time is short, and stability is good and easy to operate and can realize the advantages such as solid-liquid-gas processing up to standard simultaneously.
Description
Technical field
The invention belongs to environment-protection wastewater process field, more particularly to a kind of townm refuse transfer station leachate in-situ denitrogenation removes
Carbon integrated apparatus and its technique.
Background technology
Currently, refuse transfer station is as important pivot and necessary links in application of city life garbage collecting and transferring system, Neng Gouyou
Effect mitigates the processing pressure of city refuse landfill and reduces refuse collection cost.And the height that transfer station generates in operation process
The percolate of concentration C OD and ammonia nitrogen be easy to cause secondary pollution, this has become cities and towns pollution source urgently to be resolved hurrily.
Refuse transfer station percolate includes mainly the refuse pressing filtering liquid of generation during garbage-compressing, equipment, vehicle, ground
Flushing water and worker domestic water etc., have organic pollution concentration height, complicated component, water quality and quantity fluctuation big and by force
The feature of strong stench etc..Except the bulky refuse transfer station of the urban construction such as Beijing, Shanghai, Guangzhou and Shenzhen is equipped with percolate processing
Outside facility, the refuse transfer station percolate of urban is just included in town sewage pipeline by simple process, is unfavorable for city
The stable operation of town sewage treatment plant.Absolute most of refuse transfer stations are just directly discharged in environment without any processing, right
Environment causes seriously to pollute.And in July, 2008, State Ministry of Environmental Protection and the joint publication of national quality supervising and quarantining general bureau《Life
Refuse landfill contamination control standard》（GB16889-2008）To replace《Consumer waste filling and embedding contamination control standard》
（GB16889-1997）, the emission limit of COD is reduced to 100 mg/L by emission request by 1000 mg/ L, and increases TN rows
Put limit value be 40 mg/L hereinafter, TP emission limits be 3 mg/L hereinafter, the raising of standard force leachate treatment technology urgent need carry
Mark transformation.
《Household refuse landfill sites contamination control standard》（GB16889-2008）Put into effect preceding China's percolate from garbage filling field
Treatment technology rarely has concern mainly for the removal of percolate high concentration organic contaminant to the removal of TN and TP.Due to highly concentrated
Ammonia nitrogen is spent for the inhibiting effect of microbial activity, simple biochemical method such as anaerobic-aerobic（A/O）Biological treatment can not make
Percolate qualified discharge；Preposition pretreatment+biochemical process the group technology then developed, also because of higher cost of investment and fortune
The shortcomings of row expense and poor stability and be difficult to be widely used.Until in recent years, due to application and the hair of membrane technology
Exhibition so that biochemical process and the group technology of embrane method become the most commonly and effectively treatment process of current percolate processing.But
That there is also operating procedures in actual moving process is cumbersome for membrane process, burden requirement is stringent, medicament somewhat expensive and film replacement
The problems such as of high cost and concentrate pollutes, high investment construction expense and operating cost, make most domestic waste transportation
It stands and landfill yard is difficult to bear.
The features such as, change of water quality relatively fewer in view of refuse transfer station leachate generation be big, transfer station distribution dispersion, together
When from the sustainable development demand of country and industry, garbage leachate treatment process must realize transition and upgrade, compel to be essential
The New-type refuse vehicle transfer station leachate in-situ for wanting exploiting economy energy-efficient quickly handles movable integrated equipment and its place
Science and engineering skill strengthens control carbon denitrogenation dephosphorizing, realizes transfer station percolate qualified discharge.
Invention content
The purpose of the present invention is overcoming the deficiencies in the prior art, and provide a kind of mobile townm refuse transfer station
Rapidly and efficiently removal of carbon and nitrogen integrated apparatus, reduction operating cost realize refuse transfer station percolate row up to standard to leachate in-situ
It puts.
The specific technical solution that the present invention uses is：
Townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus, which is characterized in that it includes：UASB, primary sedimentation tank,
Denitrification pond, the micro- oxygen pond of level-one, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, the micro- oxygen pond of level Four, secondary settling tank, coagulating basin, physico-chemical precipitation
Pond, clear water reserviors, coagulated agent bucket, sludge filter press and exhaust-gas treatment facilities；Transfer station percolate raw water UASB, just heavy successively
Pond, denitrification pond, the micro- oxygen pond of level-one, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, the micro- oxygen pond of level Four, secondary settling tank, coagulating basin, materialization are heavy
Shallow lake pond is connected with clear water reserviors；Supernatant return duct is equipped at the top of UASB, the return duct other end connects the bottoms UASB by water pump；Just
Heavy bottom of pond portion is equipped with mud return line, and the return duct other end connects UASB by water pump；The micro- oxygen tank bottom of level Four is equipped with mixed liquor
Return duct, the mixed-liquor return pipe other end connect the micro- oxygen pond of level-one by water pump；Secondary settling tank bottom is equipped with mud return line, sludge
The return duct other end connects denitrification pond by water pump；Primary sedimentation tank, secondary settling tank, physico-chemical precipitation pond and clear water reserviors bottom are equipped with dirt
Mud delivery pipe, the mud discharging pipe other end connect sludge filter press by water pump；UASB, primary sedimentation tank, denitrification pond, the micro- oxygen of level-one
It is all provided at the top of pond, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, the micro- oxygen pond of level Four, secondary settling tank, coagulating basin, physico-chemical precipitation pond and clear water reserviors
There is gas sampling pipeline to be connect with exhaust-gas treatment facilities.
Preferably, the UASB top centers are equipped with gas outlet, top is set there are two three phase separator, middle part
Equipped with round and elastic filler, transparent circular peep hole and water bath heating device, bottom is equipped with water-distributing device.
Preferably, being equipped with round and elastic filler and pH probes in the middle part of the denitrification pond；The micro- oxygen pond of the level-one,
The micro- oxygen pond of two level, the micro- oxygen pond of three-level, the micro- oxygen pond of level Four are equipped with microporous aeration disc and pH probes.
Preferably, the secondary settling tank, physico-chemical precipitation pond and clear water reserviors top are equipped with sludge cut-off filter net.
Preferably, the exhaust-gas treatment facilities are internally provided with multimedium catalysis oxidation filler, top is equipped with spray and fills
It sets, bottom is equipped with air-spreading disk.
It is de- that another object of the present invention is to provide a kind of townm refuse transfer station leachate in-situs using described device
Nitrogen carbon removal treatment technique, includes the following steps：
1) transfer station percolate initially enters UASB and acidification and anaerobic methane production, USAB apical supernatant fluids reflux UASB is hydrolyzed
Bottom；
2) through step 1）Low C/N anaerobism biogas slurry that treated flows through primary sedimentation tank, and primary sedimentation tank base sludge timing is pumped into UASB systems
Maintain average COD elimination capacities in 5kg/m to ensure the denitrification microorganism activity of UASB with the sludge that supplement is lost in3D with
On；Supernatant is followed by denitrification pond, the micro- oxygen pond of level-one, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, level Four after preliminary sedimentation
Micro- oxygen pond；Meanwhile the mixed-liquor return in the micro- oxygen pond of level Four is to the micro- oxygen pond of level-one；Denitrification pond, one are controlled by online dissolved oxygen meter
The micro- oxygen pond of grade, the micro- oxygen pond of two level, the micro- oxygen pond of three-level and the micro- oxygen pond of level Four dissolved oxygen concentration be 0 mg/L so that it is in aeration rank
The oxygen-supplying amount of section reaches equilibrium state with oxygen demand；The micro- oxygen pond water outlet of level Four enters secondary settling tank mud-water separation, secondary settling tank base portion
Divide sludge reflux to denitrification pond, excess sludge periodically discharges；
3）Step 2）Supernatant after middle secondary settling tank mud-water separation is discharged into coagulating basin, and coagulant is added in coagulating basin, passes through exposure
Gas mode is uniformly mixed with waste water carries out depth control carbon denitrogenation dephosphorizing, then carries out mud-water separation, physico-chemical precipitation through physico-chemical precipitation pond
Pond base sludge periodically discharges；
4）Step 3）Supernatant enters clear water reserviors in physico-chemical precipitation pond, stops after a certain period of time, standard water discharge discharge.
Preferably, the step 2）, step 3）With step 4）In secondary settling tank, physico-chemical precipitation pond and clear water reserviors bottom
Sludge is periodically emitted into sludge filter press by mud discharging pipe, and disposition is transported outward after filter-press dehydration.
Preferably, the step 1）, step 2）, step 3）With step 4）Middle UASB, primary sedimentation tank, denitrification pond, one
The micro- oxygen pond of grade, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, the micro- oxygen pond of level Four, secondary settling tank, coagulating basin, physico-chemical precipitation pond, clear water reserviors generate
Exhaust gas enter exhaust-gas treatment facilities processing after qualified discharge.
The present invention has the following advantages：
（1）Apparatus of the present invention are by FIT(flexible interface technique), the micro- oxygen aeration process of multistage, highly effective coagulation adsorption technology PLC intelligent controls
In the system integration to mobile integrated equipment, realizes townm refuse transfer station leachate in-situ rapidly and efficiently low consumption stabilization and reach
Mark processing.
（2）The device of the invention has exhaust treatment system and sludge dewatering system, can not only realize that waste water stabilization reaches
Mark discharge, and can realize exhaust gas qualified discharge, be conducive to the innoxious of next step, stabilisation and recycling after sludge dewatering
" solid-liquid-gas " of transfer station Landfill Leachate Pollutants processing disposition up to standard, biochemical and materialization sludge yield are realized in processing disposition
Only 50 kg/d (moisture content is about 99%).
（3）Present invention process stable water outlet is up to standard, anti impulsion load, operating cost is low and hydraulic detention time is short.Rubbish
Transfer station leachate in-situ removal of carbon and nitrogen treatment process using " the micro- oxygen removal of carbon and nitrogen+coagulation of UASB+ multistages " technique as core, COD,
Ammonia nitrogen, TN and TP removal rates respectively reach 99%, 95%, 95% and 95% or more, and stable water outlet reaches《Household refuse landfill sites pollute
Control standard》（GB 16889-2008 ）2 standard of table.Present invention process anti-shock loading is strong, in low temperature（20 DEG C of ＜）Under the conditions of,
The COD elimination capacities of UASB reach as high as 7.8 kg/m3•d.The overall operation expense of the present invention is less than 20 yuan/ton of waste water, waterpower
Residence time is short, and the hydraulic detention time of whole set process is only 11 days.
（4）The novel removal of carbon and nitrogen system of present invention process handle low C/N than anaerobism biogas slurry have simultaneous denitrification remove carbon
It is efficient, the good advantage of stability, under conditions of water quality and quantity fluctuation is larger, CODCrIt can still be respectively reached with nitrogen removal rate
85% and 90% or more.
（5）The present invention uses coagulant, and novel removal of carbon and nitrogen system bio-chemical effluent can after highly effective coagulation advanced treating
It realizes that decoloration and strengthened denitrification remove carbon dephosphorization, ensures the discharge of technique final outflow water stably reaching standard.The COD of coagulantCrRemoval rate is
45%-60%, total tp removal rate are more than 95%, and chroma removal rate is more than 50%, and cost is relatively low.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus；
Fig. 2 is the structural schematic diagram of the exhaust-gas treatment facilities of the present invention；
Fig. 3 is a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen processing technological flow figure;
Fig. 4 is the removal effect of each major pollutants stable operation stage after being handled in the embodiment of the present invention, wherein a: COD；b：
Ammonia nitrogen；c：TN；d：TP；
Fig. 5 is the COD removal effect differences of different coagulants.
Specific implementation mode
The present invention is further described with specific example below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus, including：Expanded type
UASB1, primary sedimentation tank 2, denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, the micro- oxygen pond 6 of three-level, the micro- oxygen pond 7, two of level Four are heavy
Pond 8, coagulating basin 9, physico-chemical precipitation pond 10, clear water reserviors 11, coagulated agent bucket 12, sludge filter press and exhaust-gas treatment facilities 14.Turn
Fortune station percolate raw water outlet successively with UASB1, primary sedimentation tank 2, denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, three-level
Micro- oxygen pond 6, the micro- oxygen pond 7 of level Four, secondary settling tank 8, coagulating basin 9, physico-chemical precipitation pond 10 are connected with clear water reserviors 11.Denitrification pond 3, level-one
The micro- oxygen pond of micro- oxygen pond 4, the micro- oxygen pond 5 of two level, the micro- oxygen pond 6 of three-level, level Four 7 constitutes the micro- oxygen biochemical system of a multistage, to sewage
In pollutant efficiently removed.UASB1 top centers are equipped with gas outlet 15, and top is set there are two three phase separator
16, middle part is equipped with round and elastic filler 17, transparent circular peep hole 18 and water bath heating device 19, and bottom is equipped with water-distributing device
20.Supernatant return duct is equipped at the top of UASB1, the return duct other end connects the bottoms UASB1 by water pump；2 bottom of primary sedimentation tank is set
There are mud return line, the return duct other end to connect UASB1 by water pump；Micro- 7 bottom of oxygen pond of level Four is equipped with mixed-liquor return pipe, mixes
It closes the liquid return duct other end and the micro- oxygen pond of level-one 4 is connected by water pump；8 bottom of secondary settling tank is equipped with mud return line, mud return line
The other end connects denitrification pond 3 by water pump.3 middle part of denitrification pond is equipped with round and elastic filler 17 and pH pops one's head in；Described one
The micro- oxygen pond of the micro- oxygen pond 4 of grade, the micro- oxygen pond 5 of two level, the micro- oxygen pond 6 of three-level, level Four 7 is equipped with microporous aeration disc 21 and pH probes.It is just heavy
Pond 2, secondary settling tank 8, physico-chemical precipitation pond 10 and 11 bottom of clear water reserviors are equipped with mud discharging pipe, and the mud discharging pipe other end passes through water
Pump connection sludge filter press；UASB1, primary sedimentation tank 2, denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, the micro- oxygen pond 6 of three-level,
The micro- oxygen pond 7 of level Four, secondary settling tank 8, coagulating basin 9, physico-chemical precipitation pond 10 and 11 top of clear water reserviors are equipped with gas sampling pipeline and give up
Gas disposal facility 14 connects.Secondary settling tank 8, physico-chemical precipitation pond 10 and 11 top of clear water reserviors are equipped with sludge cut-off filter net 22, in water outlet
Sludge intercepted.Exhaust-gas treatment facilities 14 are internally provided with multimedium catalysis oxidation filler 23, and top is equipped with spray equipment 24,
Bottom is equipped with air-spreading disk 25.It is reasonable that the concrete type of multimedium catalysis oxidation filler can be carried out according to the ingredient and property of exhaust gas
Selection.
Based on above-mentioned apparatus, a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen using described device handles work
Skill includes the following steps：
1) transfer station percolate initially enters UASB1 and acidification and anaerobic methane production, the reflux of USAB1 apical supernatant fluids is hydrolyzed
The bottoms UASB1, reflux ratio 100%-200%, return time are 24 h；
2) through step 1）Low C/N anaerobism biogas slurry that treated flows through primary sedimentation tank 2, and primary sedimentation tank 2 base sludge timing is pumped into UASB1
System, to ensure the denitrification microorganism activity of UASB, maintains average COD elimination capacities in 5kg/m to supplement the sludge of loss3·
D or more；Supernatant is followed by denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, the micro- oxygen of three-level after preliminary sedimentation
The micro- oxygen pond of pond 6, level Four 7；Meanwhile the mixed-liquor return in the micro- oxygen pond of level Four 7 is to the micro- oxygen pond of level-one 4；It is controlled by online dissolved oxygen meter
Denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, the micro- oxygen pond 6 of three-level and the micro- oxygen pond of level Four 7 dissolved oxygen concentration be 0 mg/
L or so enables oxygen-supplying amount reach equilibrium state with oxygen demand, is anaerobic ammonium oxidizing bacteria, nitrobacteria, denitrifying bacteria, glycan
The microorganisms such as bacterium and polyP bacteria carry out control carbon denitrogenation dephosphorizing process and provide best habitat；The micro- water outlet of oxygen pond 7 of level Four enters secondary settling tank 8
Mud-water separation, to denitrification pond 3, excess sludge periodically discharges 8 bottom part sludge reflux of secondary settling tank；
3）Step 2）Supernatant after 8 mud-water separation of middle secondary settling tank is discharged into coagulating basin 9, and coagulant is added in coagulating basin 9, passes through
Aeration mode is uniformly mixed with waste water carries out depth control carbon denitrogenation dephosphorizing, then carries out mud-water separation, materialization through physico-chemical precipitation pond 10
10 base sludge of sedimentation basin periodically discharges；
4）Step 3）Supernatant enters clear water reserviors 11 in physico-chemical precipitation pond 10, stops after a certain period of time, standard water discharge discharge.
Device can generate certain exhaust gas and sludge in each stage in the process of running, therefore can be further to entire work
The sludge and exhaust gas generated in skill is handled.Step 2）, step 3）With step 4）In secondary settling tank 8,10 and of physico-chemical precipitation pond
11 base sludge of clear water reserviors is periodically emitted into sludge filter press by mud discharging pipe, and disposition is transported outward after filter-press dehydration.Step 1）、
Step 2）, step 3）With step 4）Middle UASB1, primary sedimentation tank 2, denitrification pond 3, the micro- oxygen pond 4 of level-one, the micro- oxygen pond 5 of two level, three-level are micro-
The exhaust gas that oxygen pond 6, the micro- oxygen pond 7 of level Four, secondary settling tank 8, coagulating basin 9, physico-chemical precipitation pond 10, clear water reserviors 11 generate enters exhaust-gas treatment
Qualified discharge after the processing of facility 14.
Embodiment
Below by taking the refuse transfer station percolate processing procedure of Hangzhou town as an example, using above-mentioned apparatus and technique to transfer station
Percolate is handled, and raw water quality situation is as shown in table 1：
The detailed process of inventive method such as Fig. 2, device and treatment process are as previously mentioned, and part design parameter is as follows：Daily will
1.5 tons of refuse transfer station percolate raw waters are pumped into UASB by water pump and carry out anaerobic fermentation reaction, while apical supernatant fluid flows back
The bottoms UASB, reflux ratio 100%-200%, return time are 24 h.The exhaust gas generated in anaerobic fermentation process is by collection, profit
Qualified discharge after being handled with exhaust-gas treatment facilities.COD concentration can be reduced to 4000-5000 after UASB reactor reactions 3.2 days
mg/L.By anaerobism biogas slurry from flowing in primary sedimentation tank after anaerobic reaction, primary sedimentation tank base sludge timing be pumped into UASB systems with
The sludge being lost in is supplemented, then waste water is followed by denitrification pond, the micro- oxygen pond of level-one, the micro- oxygen pond of two level, the micro- oxygen pond of three-level, level Four
Micro- oxygen pond, secondary settling tank.
For the mixed-liquor return in the micro- oxygen pond of level Four to the micro- oxygen pond of level-one, return time is 24 h；Secondary settling tank partial sludge flows back
To denitrification pond, return time is 24 h.Pass through the operation of online pH meter, online dissolved oxygen meter and PLC intelligent control package units.
During stable operation, the effluent COD concentration of novel removal of carbon and nitrogen system is 200 mg/L or so, and water outlet ammonia nitrogen concentration is less than 25
Mg/L, water outlet total nitrogen concentration are less than 40 mg/L, and water outlet total phosphorus concentration is less than 5 mg/L, and corresponding removal rate can respectively reach
95%, 99%, 94% and 92%, carrying out practically Effects of Water Quality is shown in Fig. 4.
Second pond supernatant continuously enters coagulating basin by self-flowing effect, and coagulant is pumped by metering pump in coagulating basin,
It is mixed by aeration mode, water outlet is into physico-chemical precipitation pond progress mud-water separation after reaction, after supernatant flows into clear water reserviors
Qualified discharge.Secondary settling tank, physico-chemical precipitation pond and clear water reserviors top are equipped with sludge cut-off filter net, sludge can be prevented excessively to be lost in.It is just heavy
Pond, secondary settling tank, physico-chemical precipitation pond and clear water reserviors base sludge are periodically emitted into sludge filter press, moisture percentage in sewage sludge after filter-press dehydration
85% is can reach, outward transport disposition.Coagulant uses PFS, effect and poly-ferric chloride to be sufficiently close to, but the cost of PFS is than poly-
It is 400-500 yuan/ton low to close iron chloride.And PAC is also very similar with the effect of Alkaline PAC, but effect is not ideal, highest
Removal rate is below 60%, and the additive amount of What is more Alkaline PAC is improved to 2g/L, and COD removal rates decline instead, and they
It is also barely satisfactory for the removal effect of coloration.If using 50% COD removal rates as target, with PAC, Alkaline PAC, polymerization chlorine
It is respectively 1.82 yuan, 1.32 yuan, 1.28 yuan and 1.25 yuan to change iron and PFS as the cost of coagulant, and Fig. 5's the result shows that PFS
Under conditions of identical COD removal effects, cost is minimum, therefore selects PFS to make coagulant in treatment process of the present invention.
Advanced nitrogen dephosphorization and decoloration control carbon can be achieved in coagulating basin, COD removal rates reach 50% or so, total nitrogen removal
Rate is 10% or so, and total tp removal rate is more than 95%.Last water outlet COD≤100 mg/L of present invention process, the mg/ of ammonia nitrogen≤10
L, the mg/L of total nitrogen≤30, the mg/L of total phosphorus≤0.5, can stably reach《Household refuse landfill sites contamination control standard》（GB
16889-2008 ）The emission request of 2 standard of table, overall operation cost are less than 20 yuan/ton of waste water.
Specific treatment effect such as following table of the technique to above-mentioned waste water：
The Inlet and outlet water water quality situation of 2 refuse transfer station percolate treating process of table
It can be seen that the device of the invention and technique are higher to the treatment effeciency of townm refuse transfer station percolate, cost is relatively low,
Compared with prior art, there is substantive distinguishing features outstanding and significant progress.
Claims (8)
1. a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus, which is characterized in that it includes：UASB
（1）, primary sedimentation tank（2）, denitrification pond（3）, the micro- oxygen pond of level-one（4）, the micro- oxygen pond of two level（5）, the micro- oxygen pond of three-level（6）, the micro- oxygen of level Four
Pond（7）, secondary settling tank（8）, coagulating basin（9）, physico-chemical precipitation pond（10）, clear water reserviors（11）, coagulated agent bucket（12）, sludge filter press
And exhaust-gas treatment facilities（14）；Transfer station percolate raw water UASB successively（1）, primary sedimentation tank（2）, denitrification pond（3）, the micro- oxygen of level-one
Pond（4）, the micro- oxygen pond of two level（5）, the micro- oxygen pond of three-level（6）, the micro- oxygen pond of level Four（7）, secondary settling tank（8）, coagulating basin（9）, physico-chemical precipitation
Pond（10）And clear water reserviors（11）It is connected；UASB（1）Top is equipped with supernatant return duct, and the return duct other end is connected by water pump
UASB（1）Bottom；Primary sedimentation tank（2）Bottom is equipped with mud return line, and the return duct other end connects UASB by water pump（1）；Level Four
Micro- oxygen pond（7）Bottom is equipped with mixed-liquor return pipe, and the mixed-liquor return pipe other end connects the micro- oxygen pond of level-one by water pump（4）；Two
Heavy pond（8）Bottom is equipped with mud return line, and the mud return line other end connects denitrification pond by water pump（3）；Primary sedimentation tank（2）、
Secondary settling tank（8）, physico-chemical precipitation pond（10）And clear water reserviors（11）Bottom is equipped with mud discharging pipe, and the mud discharging pipe other end passes through
Water pump connects sludge filter press；UASB（1）, primary sedimentation tank（2）, denitrification pond（3）, the micro- oxygen pond of level-one（4）, the micro- oxygen pond of two level（5）、
The micro- oxygen pond of three-level（6）, the micro- oxygen pond of level Four（7）, secondary settling tank（8）, coagulating basin（9）, physico-chemical precipitation pond（10）And clear water reserviors（11）Top
Portion is equipped with gas sampling pipeline and exhaust-gas treatment facilities（14）Connection.
2. townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus as described in claim 1, which is characterized in that
The UASB（1）Top center is equipped with gas outlet（15）, top is set there are two three phase separator（16）, middle part is equipped with circle
Shape elastic filler（17）, transparent circular peep hole（18）And water bath heating device（19）, bottom is equipped with water-distributing device（20）.
3. townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus as described in claim 1, which is characterized in that
The denitrification pond（3）Middle part is equipped with round and elastic filler（17）It pops one's head in pH；The micro- oxygen pond of the level-one（4）, two level it is micro-
Oxygen pond（5）, the micro- oxygen pond of three-level（6）, the micro- oxygen pond of level Four（7）It is equipped with microporous aeration disc（21）It pops one's head in pH.
4. townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus as described in claim 1, which is characterized in that
The secondary settling tank（8）, physico-chemical precipitation pond（10）And clear water reserviors（11）Top is equipped with sludge cut-off filter net（22）.
5. townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus as described in claim 1, which is characterized in that
The exhaust-gas treatment facilities（14）It is internally provided with multimedium catalysis oxidation filler（23）, top is equipped with spray equipment（24）, bottom
Portion is equipped with air-spreading disk（25）.
6. a kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen treatment process using claim 1 described device,
It is characterized in that, includes the following steps：
1) transfer station percolate initially enters UASB（1）Acidification and anaerobic methane production, USAB is hydrolyzed（1）Apical supernatant fluid returns
Flow UASB（1）Bottom；
2) through step 1）Treated, and low C/N anaerobism biogas slurry flows through primary sedimentation tank（2）, primary sedimentation tank（2）Base sludge timing is pumped into
UASB（1）System, to ensure the denitrification microorganism activity of UASB, maintains average COD elimination capacities to exist to supplement the sludge of loss
5kg/m3D or more；Supernatant is followed by denitrification pond after preliminary sedimentation（3）, the micro- oxygen pond of level-one（4）, the micro- oxygen of two level
Pond（5）, the micro- oxygen pond of three-level（6）, the micro- oxygen pond of level Four（7）；Meanwhile the micro- oxygen pond of level Four（7）Mixed-liquor return to the micro- oxygen pond of level-one
（4）；Denitrification pond is controlled by online dissolved oxygen meter（3）, the micro- oxygen pond of level-one（4）, the micro- oxygen pond of two level（5）, the micro- oxygen pond of three-level（6）With
The micro- oxygen pond of level Four（7）Dissolved oxygen concentration be 0 mg/L so that it reaches equilibrium-like in oxygen-supplying amount and the oxygen demand of aeration phase
State；The micro- oxygen pond of level Four（7）Water outlet enters secondary settling tank（8）Mud-water separation, secondary settling tank（8）Bottom part sludge reflux is to denitrification pond
（3）, excess sludge periodically discharges；
3）Step 2）Middle secondary settling tank（8）Supernatant after mud-water separation is discharged into coagulating basin（9）, toward coagulating basin（9）Interior addition coagulation
Agent is uniformly mixed with waste water by aeration mode and carries out depth control carbon denitrogenation dephosphorizing, then through physico-chemical precipitation pond（10）Carry out muddy water
Separation, physico-chemical precipitation pond（10）Base sludge periodically discharges；
4）Step 3）Physico-chemical precipitation pond（10）Middle supernatant enters clear water reserviors（11）, stop after a certain period of time, standard water discharge discharge.
7. townm refuse transfer station leachate in-situ removal of carbon and nitrogen treatment process according to claim 6, which is characterized in that
The step 2）, step 3）With step 4）In secondary settling tank（8）, physico-chemical precipitation pond（10）And clear water reserviors（11）Base sludge is logical
It crosses mud discharging pipe and is periodically emitted into sludge filter press, disposition is transported outward after filter-press dehydration.
8. townm refuse transfer station leachate in-situ removal of carbon and nitrogen treatment process according to claim 6, which is characterized in that
The step 1）, step 2）, step 3）With step 4）Middle UASB（1）, primary sedimentation tank（2）, denitrification pond（3）, the micro- oxygen pond of level-one
（4）, the micro- oxygen pond of two level（5）, the micro- oxygen pond of three-level（6）, the micro- oxygen pond of level Four（7）, secondary settling tank（8）, coagulating basin（9）, physico-chemical precipitation pond
（10）, clear water reserviors（11）The exhaust gas of generation enters exhaust-gas treatment facilities（14）Qualified discharge after processing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111018238A (en) * | 2019-11-27 | 2020-04-17 | 中建科技有限公司 | System and method for treating press filtrate of refuse transfer station |
| CN111153558A (en) * | 2020-01-20 | 2020-05-15 | 上海泓济环保科技股份有限公司 | Garbage transfer station leachate treatment device and treatment method thereof |
| CN112624395A (en) * | 2020-11-27 | 2021-04-09 | 维尔利环保科技集团股份有限公司 | Treatment method of high-salinity high-hardness organic wastewater of fly ash landfill |
| CN114105406A (en) * | 2021-10-29 | 2022-03-01 | 江苏河海给排水成套设备有限公司 | Household wet garbage and domestic sewage treatment system and treatment method |
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| CN105541008A (en) * | 2015-12-22 | 2016-05-04 | 浙江大学 | An efficient denitrifying and carbon-removing device for culture wastewater anaerobic biogas slurry with a low C/N ratio and a process thereof |
| CN206359388U (en) * | 2016-11-23 | 2017-07-28 | 浙江传超环保科技有限公司 | A kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104529078A (en) * | 2014-12-30 | 2015-04-22 | 浙江大学 | Refuse landfill leachate treatment method |
| CN105541008A (en) * | 2015-12-22 | 2016-05-04 | 浙江大学 | An efficient denitrifying and carbon-removing device for culture wastewater anaerobic biogas slurry with a low C/N ratio and a process thereof |
| CN206359388U (en) * | 2016-11-23 | 2017-07-28 | 浙江传超环保科技有限公司 | A kind of townm refuse transfer station leachate in-situ removal of carbon and nitrogen integrated apparatus |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018238A (en) * | 2019-11-27 | 2020-04-17 | 中建科技有限公司 | System and method for treating press filtrate of refuse transfer station |
| CN111153558A (en) * | 2020-01-20 | 2020-05-15 | 上海泓济环保科技股份有限公司 | Garbage transfer station leachate treatment device and treatment method thereof |
| CN112624395A (en) * | 2020-11-27 | 2021-04-09 | 维尔利环保科技集团股份有限公司 | Treatment method of high-salinity high-hardness organic wastewater of fly ash landfill |
| CN114105406A (en) * | 2021-10-29 | 2022-03-01 | 江苏河海给排水成套设备有限公司 | Household wet garbage and domestic sewage treatment system and treatment method |
| CN114105406B (en) * | 2021-10-29 | 2022-11-04 | 江苏河海给排水成套设备有限公司 | Household wet garbage and domestic sewage treatment system and treatment method |
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