CN105036490B - Method for removing nitrogen through treating refuse leachate by using two-stage feedwater mineralized refuse reactor - Google Patents
Method for removing nitrogen through treating refuse leachate by using two-stage feedwater mineralized refuse reactor Download PDFInfo
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- CN105036490B CN105036490B CN201510533131.0A CN201510533131A CN105036490B CN 105036490 B CN105036490 B CN 105036490B CN 201510533131 A CN201510533131 A CN 201510533131A CN 105036490 B CN105036490 B CN 105036490B
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Abstract
The invention discloses a method for removing nitrogen through treating refuse leachate by using a two-stage feedwater mineralized refuse reactor. The method comprises the steps of arranging a two-stage mineralized refuse reactor combined system, carrying out synchronous nitration reaction on a certain ratio of leachate by using a first-stage mineralized refuse reactor to remove part of total nitrogen, and then, injecting the leachate into a second-stage mineralized refuse reactor; and meanwhile injecting the rest ratio of raw leachate serving as a supplementary carbon source to the second-stage mineralized refuse reactor, and further accelerating the denitrification of nitrate nitrogen of the leachate treated by the first-stage mineralized refuse reactor to increase the removal rate of the total nitrogen of the system. By using the two-stage mineralized refuse reactor combined system for treating the leachate in the method, a certain ratio of raw leachate is injected to the second-stage mineralized refuse reactor to supplement a denitrification carbon source on the basis that part of total nitrogen is removed by using the first-stage mineralized refuse reactor, so that the aim of removing nitrogen through denitrification is achieved to the maximum extent, and the removal rate of the total nitrogen is increased; and the leachate is treated by using mineralized refuses, so that the aim of treating wastes by using wastes is achieved.
Description
Technical field
The invention belongs to environmental protection and technical field of new energies, at more particularly to a kind of two-part water inlet mineralized waste reactor
The method of reason percolate denitrogenation.
Background technology
With the continuous improvement of fast development and people's consumptive power of Chinese national economy, the yield of house refuse is not yet
It is disconnected to increase.China's domestic waste yield has reached 1.51 hundred million tons within 2012, and China's municipal refuse total amount is up to 1.8 within 2013
Hundred million tons, municipal refuse accounts for the 30% of national rubbish total amount.The main method of China's domestic rubbish disposal is sanitary landfills, this side
Method can produce a large amount of percolates.Percolate is a kind of high concentrated organic wastewater of complicated component, high with organic loading, ammonia
The features such as nitrogen and content of beary metal are higher, later stage biodegradability is poor for landfill, water quality and the water yield are changed greatly.Traditional percolate
Processing method has that investment cost is high, processing cost is high, and later stage operation energy consumption is big, complex technical process, big, system of taking up an area place
The problems such as being easily hit difficult with effluent quality up to standard, thus the safe handling of percolate is a great problem for currently facing.
Aged refuse reactor processes percolate, and not only high treating effect, sufficiently utilizes changing waste into resources, reaches
To the purpose of the treatment of wastes with processes of wastes against one another, and processing cost is low, and technological process and operational management are simple and convenient, with the life of preferable environment
State meaning and economic benefit.
From the nineties in last century, some scholars have carried out some and have ground to aged refuse reactor process percolate
Study carefully work.Forefathers' research all shows that mineralized waste bed has good treatment effect to ammonia nitrogen, but but fails to solve out liquid glauber salt state
The high problem of nitrogen content, causes nitrogen removal rate not high, and one of reason is that denitrification process carbon source is not enough, into anoxic zone
It is low with the percolate carbon-nitrogen ratio of anaerobic zone, hinder the denitrification of nitrate nitrogen.
The content of the invention
The side of mineralized waste reactor for treatment percolate denitrogenation it is an object of the invention to provide a kind of two-part is intake
Method.
The thinking of the present invention：Fully nitrify ammonia nitrogen is met, it is ensured that on the premise of ammonia nitrogen removal frank, by the diafiltration of part stock solution
Liquid is applied directly to denitrification zone, and organic matter therein serves as the carbon source of denitrification process, improves nitrate in percolate
Remove, so as to improve nitrogen removal rate.
Concretely comprise the following steps：
(1) a kind of two-stage mineralized waste reactor combined system is set, including two mineralized waste reactors, ventilation duct,
Effusion meter, air pump and control chamber；Two mineralized waste reactor side vertical direction are uniformly arranged three solid sample taps, bottom
Water sampling mouth and aeration tube are set out, aeration tube connection spinner flowmeter, spinner flowmeter is connected with air pump, air pump connection control
Case；Temperature indicator, aeration switch and temperature switch are provided with control chamber；Ventilation duct is arranged in mineralized waste reactor
Centre, and the equidistant punching of tube wall, its top seals and bottom is connected with aeration tube, is beneficial to air to the cylinder of mineralized waste layer
Internal diffusion, wraps up in gauze outside ventilation duct, prevent mineralized waste from blocking air vent；Mineralized waste reactor top is added a cover, and has been covered
Funnel, for water filling, between funnel and lid valve is arranged, and base adds the PVC board of one layer of uniform cloth hole, for water distribution uniformity；Mineralising
Rubbish reactor loads respectively from top to bottom gravel layer, mineralized waste layer and inclined-plane gravel layer, and the swash plate of uniform cloth hole supports oblique
Face gravel layer, three temperature probes uniformly imbed mineralized waste layer, for determining heap body temperature.
(2) by adjusting setting aeration rate and operational factor, by the two-stage mineralized waste reactor connection that step (1) is arranged
With system process percolate, first order mineralized waste reactor be synchronous nitration and denitrification reactor, second level mineralising rubbish
Rubbish reactor is denitrification reactor or the reactor based on denitrification；First order mineralized waste reactor is not processed completely
Whole stock solution percolates that individual process need to be processed, but the stock solution percolate for accounting for total amount X% is processed, it is anti-in first order mineralized waste
Answer device to remove on the basis of the total nitrogen of part, the water outlet of the first order mineralized waste reactor containing finite concentration nitrate nitrogen is oozed
Filtrate is mixed into second level mineralized waste reactor with the stock solution percolate for accounting for total amount (100-X) %, using this (100-X) %'s
Organic substance in stock solution percolate further promotes nitric acid in percolate as the carbon source of nitrate nitrogen denitrification process
The removal of salt, so as to improve nitrogen removal rate；X=70 ~ 99.
The range of accommodation of the aeration rate and operational factor includes：First order mineralized waste reactor is simultaneous nitrification and denitrification nitre
Change reactor, its aeration rate is 0.2 ~ 3.0 m3/(m3D), mineralized waste reactor in the second level is for denitrification reactor or with anti-
Reactor based on nitrification, its aeration rate is 0 ~ 0.4 m3/(m3·d)；Aeration position is arranged on as the case may be reactor bottom
Optional position between portion to reactor head 1/3rd；Influent load is 30 ~ 70 L/ (m3·d)；Water inlet the frequency be 1 ~
2 times/d；The particle diameter of mineralized waste is 4 ~ 10mm.
The advantage of the inventive method：
The two-stage mineralized waste reactor Combined Treatment permeated liquid system that the inventive method is used, in first order mineralized waste
Reactor is removed on the basis of the total nitrogen of part, is mended by the way that certain proportion stock solution percolate is injected into second level mineralized waste reactor
Denitrifying carbon source is filled, denitrification denitrogenation is farthest realized, nitrogen removal rate is improved；And it is percolated using mineralized waste process
Liquid, realizes the treatment of wastes with processes of wastes against one another.
Description of the drawings
Fig. 1 is the structural representation of embodiment of the present invention equipment therefor.
Labelling in figure：1- funnels；2- gravel layers；3- mineralized waste layers；4- solid sample taps；5- ventilation ducts；6- inclined-planes gravel
Rock layers；The swash plate of the uniform cloth holes of 7-；8- water outlet sample taps；9- valves；The PVC board of the uniform cloth holes of 10-；11- temperature probes；12-
Spinner flowmeter；13- air pumps；14- temperature indicators；15- control chambers；16- aerations are switched；17- temperature switches；A- first order ore deposits
Change rubbish reactor；B- second level mineralized waste reactor.
Specific embodiment
Embodiment：
(1) a kind of two-stage mineralized waste reactor combined system is set, including first order mineralized waste reactor A, second
Level mineralized waste reactor B, ventilation duct 5, spinner flowmeter 12, air pump 13 and control chamber 15；Two mineralized waste reactors are equal
By a diameter of 0.37m, the highly PVC pillars for 1.5m are constituted, and its side vertical direction is uniformly arranged three solid sample taps 4,
Bottom sets out water sampling mouth 8 and aeration tube, and aeration tube connection spinner flowmeter 12, spinner flowmeter 12 is connected with air pump 13, gas
Pump 13 connects control chamber 15；Temperature indicator 14, aeration switch 16 and temperature switch 17 are provided with control chamber 15；Ventilation duct 5
It is arranged on mineralized waste reactor central authorities, and the equidistant punching of tube wall（Pipe diameter 2.5cm, aperture 0.6cm, hole vertical interval
10cm）, its top seals and bottom is connected with aeration tube, is beneficial to cylinder internal diffusion of the air to mineralized waste layer 3, ventilation duct
Gauze is wrapped up in outside 5, prevents mineralized waste from blocking air vent；Mineralized waste reactor top is added a cover, and has covered funnel 1, for noting
Water, arranges valve 9 between funnel 1 and lid, base adds the PVC board 10 of one layer of uniform cloth hole, for water distribution uniformity；Mineralized waste reacts
Device loads respectively from top to bottom gravel layer 2（Highly for 10 cm, the gravel that particle diameter is 4 cm and height be 5 cm, particle diameter be 1 cm
Little gravel, as supporting layer with collection water layer）, highly for 0.9 m mineralized waste layer 3 and inclined-plane gravel layer 6（Height 5cm, grain
The little gravel of footpath 1cm）, the supporting oblique surface gravel layer 6 of swash plate 7 of uniform cloth hole, the uniform embedment mineralized waste of three temperature probes 11
Layer 3, for determining heap body temperature.
Mineralized waste and percolate used in the present embodiment is taken from Guilin City and blurts out refuse landfill.
Above-mentioned mineralized waste is the mineralized waste with 10 years landfill ages, is transported back after laboratory from landfill yard, will with sieve
It screens out 4 ~ 10mm particle size range, and in then filling out mineralized waste reactor, loading density is 740kg/m3；Outside mineralized waste
See physical behavior to show as：Similar soil, no abnormal flavour.
The physicochemical property of above-mentioned percolate is as shown in table 1.
The percolate raw water quality feature of table 1
(2) percolate is processed by the two-stage mineralized waste reactor combined system that step (1) is arranged（By funnel
1 pours percolate, and the valve 9 between funnel 1 and lid is closed after water inlet, starts simultaneously at aeration, and percolate is entered daily
Reacted percolate is released in the front reactor by the previous day, and outlet valve is closed immediately after.Per three days in process of the test
Determine the concentration change of each pollutant in a water outlet percolate）, by adjusting, aeration rate and operational factor, first order ore deposit are set
It is synchronous nitration and denitrification reactor to change rubbish reactor A, and second level mineralized waste reactor B is denitrification reactor；First
Level mineralized waste reactor A has not processed whole stock solution percolates that whole process need to be processed, but processes and account for total amount 75%
Stock solution percolate, on the basis of first order mineralized waste reactor A removes part total nitrogen, will be containing finite concentration nitrate nitrogen
The water outlet percolate of first order mineralized waste reactor A be mixed into second level mineralising with the stock solution percolate for accounting for total amount 25%
Rubbish reactor B, by the use of the organic substance in this 25% stock solution percolate as the carbon source of nitrate nitrogen denitrification process, enters
One step promotes the removal of nitrate in percolate, so as to improve nitrogen removal rate.
The aeration rate and operational factor：First order mineralized waste reactor A is adopted in bottom continuous aeration mode, aeration
Measure as 1.86 m3/(m3D), aeration 6 hours are continued daily, second level mineralized waste reactor B is adopted on reactor top three
Continuous aeration at/mono-, continues daily aeration 6 hours, and aeration rate is respectively 0.372 m3/(m3.d)；Influent load is 31 L/
(m3·d)；The water inlet frequency is 1 time/d.
Above-mentioned test run two months, as a result shows, it is stable after, nitrogen removal rate is stable in 71%-87%, and total nitrogen is put down
Clearance is 76%；In addition CODCrPreferable removal effect is also achieved with ammonia nitrogen, average removal rate is respectively 84% and 80%.
Claims (1)
1. a kind of two-part is intake the method for mineralized waste reactor for treatment percolate denitrogenation, it is characterised in that concrete steps
For：
(1) a kind of two-stage mineralized waste reactor combined system is set, including two mineralized waste reactors, ventilation duct, flows
Meter, air pump and control chamber；Two mineralized waste reactor side vertical direction are uniformly arranged three solid sample taps, and bottom sets out
Water sampling mouth and aeration tube, aeration tube connection spinner flowmeter, spinner flowmeter is connected with air pump, air pump connection control chamber；Control
Temperature indicator, aeration switch and temperature switch are provided with case processed；Ventilation duct is arranged on mineralized waste reactor central authorities, and manages
The equidistant punching of wall, its top seals and bottom is connected with aeration tube, is beneficial to cylinder internal diffusion of the air to mineralized waste layer,
Gauze is wrapped up in outside ventilation duct, prevents mineralized waste from blocking air vent；Mineralized waste reactor top is added a cover, and has covered funnel, is used
Valve is set between water filling, funnel and lid, base adds the PVC board of one layer of uniform cloth hole, for water distribution uniformity；Mineralized waste reacts
Device loads respectively from top to bottom gravel layer, mineralized waste layer and inclined-plane gravel layer, the swash plate supporting oblique surface gravel layer of uniform cloth hole,
Three temperature probes uniformly imbed mineralized waste layer, for determining heap body temperature；
(2) by adjusting setting aeration rate and operational factor, by the two-stage mineralized waste reactor combination system that step (1) is arranged
System processes percolate, and first order mineralized waste reactor is synchronous nitration and denitrification reactor, and second level mineralized waste is anti-
Device is answered for denitrification reactor or the reactor based on denitrification；First order mineralized waste reactor does not process complete mistake
Whole stock solution percolates that journey need to be processed, but the stock solution percolate for accounting for total amount X% is processed, in first order mineralized waste reactor
On the basis of removing part total nitrogen, by the water outlet percolate of the first order mineralized waste reactor containing finite concentration nitrate nitrogen
Second level mineralized waste reactor is mixed into the stock solution percolate for accounting for total amount (100-X) %, using the stock solution of this (100-X) %
Organic substance in percolate further promotes nitrate in percolate as the carbon source of nitrate nitrogen denitrification process
Remove, so as to improve nitrogen removal rate；X=70 ~ 99；
The range of accommodation of the aeration rate and operational factor includes：First order mineralized waste reactor is that synchronous nitration and denitrification is anti-
Device is answered, its aeration rate is 0.2 ~ 3.0 m3/(m3D), mineralized waste reactor in the second level is for denitrification reactor or with denitrification
Based on reactor, its aeration rate be 0 ~ 0.4 m3/(m3·d)；Aeration position is arranged on as the case may be reactor bottom extremely
Optional position between reactor head 1/3rd；Influent load is 30 ~ 70 L/ (m3·d)；Water inlet the frequency be 1 ~ 2 time/
d；The particle diameter of mineralized waste is 4 ~ 10mm.
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| CN108246761B (en) * | 2018-03-21 | 2021-04-09 | 桂林理工大学 | Method for accelerating methanation of landfill garbage |
| CN108500024B (en) * | 2018-03-21 | 2021-02-09 | 桂林理工大学 | Device for accelerating methanation of landfill garbage |
| CN112209506A (en) * | 2020-10-22 | 2021-01-12 | 江苏美能膜材料科技有限公司 | High-concentration dimethylacetamide wastewater treatment device and treatment method |
| CN113552037B (en) * | 2021-06-03 | 2022-08-02 | 浙江大学 | Device and method for testing dual-porosity seepage parameters of garbage |
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| CN103466796A (en) * | 2013-09-27 | 2013-12-25 | 桂林理工大学 | Method for carrying out synchronous nitrification treatment and denitrification treatment on percolate by using mineralized refuse reaction bed |
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Patent Citations (6)
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| CN1769213A (en) * | 2005-09-14 | 2006-05-10 | 哈尔滨工业大学 | Water influent allocation optimization method in segmental influent and biological denitrification process |
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| CN101337740A (en) * | 2008-08-13 | 2009-01-07 | 山东美泉环保科技有限公司 | Two-stage water supply bio denitrification system and process thereof |
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| CN103466796A (en) * | 2013-09-27 | 2013-12-25 | 桂林理工大学 | Method for carrying out synchronous nitrification treatment and denitrification treatment on percolate by using mineralized refuse reaction bed |
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Effective date of registration: 20210111 Address after: 570000 room e, 18 / F, Xingli international building, 13 Wenhua Road, Longhua District, Haikou City, Hainan Province Patentee after: Hainan Muzhiyuan Environmental Protection Service Co.,Ltd. Address before: 541004 the Guangxi Zhuang Autonomous Region Guilin Construction Road No. 12 Patentee before: GUILIN University OF TECHNOLOGY |
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