CN108328827A - Leachate pyrolytic gasification treatment technology - Google Patents
Leachate pyrolytic gasification treatment technology Download PDFInfo
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- CN108328827A CN108328827A CN201810041274.3A CN201810041274A CN108328827A CN 108328827 A CN108328827 A CN 108328827A CN 201810041274 A CN201810041274 A CN 201810041274A CN 108328827 A CN108328827 A CN 108328827A
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- Prior art keywords
- leachate
- percolate
- processing
- water
- gasification
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- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/025—Thermal hydrolysis
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0946—Waste, e.g. MSW, tires, glass, tar sand, peat, paper, lignite, oil shale
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of leachate pyrolytic gasification treatment technologies comprising following steps：1) landfill leachate is filtered by grid, percolate and rubbish is separated；2) percolate is separated by solid-liquid separation by dissolved air flotation；3) solid and water are thoroughly separated, by filtering, clear liquid is sent into sewage disposal system, and final process is irrigation water or municipal water use；The sediment of suspended matter and lower layer for upper layer is sprayed by atomization and carries out gasification and pyrolysis processing in two sections of townhouse formula garbage pyrolysis gasification incinerators, and the gentle body of inorganic lime-ash is eventually converted into, and realizes thoroughly processing；Technical finesse provided by the invention is ingenious, and decrement more simplified than landfill leachate difficult to deal with by the way of pyrolytic gasification, effectively reduce the processing cost and difficulty of landfill leachate, it is efficient to organic matter removal, and stable effluent quality, impact resistance, load are strong, it can effectively realize the processing of landfill leachate, be conducive to wide popularization and application.
Description
Technical field
The present invention relates to technical field of landfill leachate treatment, more particularly to a kind of leachate pyrolytic gasification handles skill
Art.
Background technology
With China's rapid economic development, city size constantly expands, and Municipal Domestic Garbage Output also sharply increases.People
Daily output quantity of refuse is increased more than 1.1kg with 8%~10% speed, and only the big cities such as Beijing, Shanghai generate daily
House refuse is just up to 20,000 tons or so.China has become rubbish in the world and surrounds city one of the countries with the most serious ....
City biochemistry rubbish is oozed in stacking, landfill and the temporary rubbish for generating a large amount of intractable foul smelling smells in the process
Filtrate.Percolate is influenced by several factors, cation, heavy metal containing ammonia nitrogen and various solubilised states, phenols, solubility
Aliphatic acid and other organic pollutions, have water quality complicated, water quality and water variation greatly, organic matter, that is, BOD5 and COD concentration height,
The distinguishing features such as ammonia-nitrogen content is high, and tenor is higher.The property of percolate changes in a sizable range.If being not added with
It handles and is directly discharged into environment, serious environmental pollution can be caused.Landfill leachate harm is bigger, 1 ton of landfill leachate production
Raw pollution is equivalent to the pollution of 100 tons of sanitary sewages generation.It is directly discharged in environment to surface water environment, groundwater environment
Serious pollution will be will produce, while threatening the drinking water safety of resident.
Related decree and standard have been issued and implemented in 2008 in China, it is desirable that the necessary treatment in situ of landfill leachate is up to standard
Discharge.The technology for capableing of qualified discharge at present mainly uses reverse osmosis technology, but the Treatment Landfill Leachate is still
There are many problems, such as intractability is big, of high cost, are unfavorable for being widely popularized utilization.
Invention content
In view of the above-mentioned deficiencies, present invention aims at provide a kind of simple process and low cost, using pyrolytic gasification
And decrement more simplified than landfill leachate difficult to deal with is effectively reduced the processing cost and difficulty of landfill leachate by mode
Leachate pyrolytic gasification treatment technology.
To achieve the above object, the technical solution provided is the present invention：
A kind of leachate pyrolytic gasification treatment technology comprising following steps：
(1) landfill leachate is filtered by grid, percolate and rubbish is separated, percolate enters processing system
System；
(2) percolate is separated by solid-liquid separation by dissolved air flotation, obtains solid portion and liquid part；
(3) solid and water is carried out to solid portion thoroughly to separate；Suspended matter and lower layer to the upper layer of liquid part it is heavy
Starch is sprayed by atomization and carries out gasification and pyrolysis processing in two sections of townhouse formula garbage pyrolysis gasification incinerators, is eventually converted into inorganic
Lime-ash and gas realize thoroughly processing.
As an improvement of the present invention, it before the step (2), after the primary separation of processing system, is oozing
Addition accounts for the flocculant that its weight percent is 0.5-5% and is mixed in filtrate.The additive amount of flocculant can be according to leakage
The property difference of liquid is adjusted in right amount in 0.5-5%.
As an improvement of the present invention, the step (2) specifically includes following steps：Molten gas gas is carried out to percolate
Floating, to all or part of pending or treated, water pressurize and aerating, increases the Underwater sound field of water, in normal pressure situation
Lower release, air are precipitated to form minute bubbles, are adhered on impurity wadding grain, wadding grain global density is caused to rise less than water, to
Make separation of solid and liquid, obtains solid portion and liquid part.
As an improvement of the present invention, the step (3) specifically includes following steps：It will be by air-dissolving air-float processing
Percolate introduces subsider, and water and the solid-state in solid portion are separated, and by filtering, clear liquid is sent into sewage disposal system, most
Processing is irrigation water or municipal water use eventually；By the suspended matter for being located at topside position in liquid part and it is deposited in lower layer position
Sediment carries out two sections of townhouse formula garbage pyrolysis gasification incinerators progress pyrolysis sections of atomization penetrating and is pyrolyzed and is gasified, final to turn
Turn to the gentle body of inorganic lime-ash, realize percolate processing simplify and thoroughly.
As an improvement of the present invention, two sections of townhouses formula garbage pyrolysis gasification incinerator include two for pyrolysis and
The incinerator for thermal decomposition that gasification process process is connected.It is combustion chamber heat supply that townhouse, which refers to pyrolysis oven both sides, the two of combustion chamber
Side is pyrolysis chamber, the pyrolysis chamber of both sides when combustion chambers burn.Combustion chamber and pyrolysis chamber number depend on treating capacity
Size.
Beneficial effects of the present invention are：Technical finesse provided by the invention is ingenious, and handle compares by the way of pyrolytic gasification
Intractable landfill leachate is simplified and decrement, effectively reduces the processing cost and difficulty of landfill leachate, the technical side
Method processing cost is low, efficient to organic matter removal, and stable effluent quality, and impact resistance, load is strong, can effectively realize that rubbish oozes
The processing of filtrate is conducive to wide popularization and application.In general, leachate pyrolytic gasification treatment technology of the present invention is with following excellent
Point：
1, through experimental tests, leachate pyrolytic gasification treatment technology handling result index of the present invention disclosure satisfy that country
《Household refuse landfill sites contamination control standard》(GB16889-2008) requires discharge standard；
2, leachate pyrolytic gasification treatment technology of the present invention is adaptable, can be adapted for creating, conventional garbage is transformed
Percolation liquid treating system, to ensure the stably reaching standard discharge of landfill leachate；
3, leachate pyrolytic gasification treatment technology of the present invention can realize resource reclaim, by the landfill leachate of high concentration
It is handled by the way of pyrolytic gasification, useful pyrolysis gas can be generated, be allowed to recycling；
4, leachate pyrolytic gasification treatment technology treatment process of the present invention is simple, and treatment effect is good；
5, leachate pyrolytic gasification treatment technology applicability of the present invention is extensive, for " old-age group ", " youth " garbage filter
Liquid is suitable for, applied widely.
With reference to embodiment, the present invention is further described.
Specific implementation mode
Embodiment：The embodiment of the present invention provides a kind of leachate pyrolytic gasification treatment technology comprising following steps：
A kind of leachate pyrolytic gasification treatment technology comprising following steps：
(1) landfill leachate is filtered by grid, percolate and rubbish is separated, percolate enters processing system
System；Preferably, after the primary separation by processing system, it is 0.5-5%'s to be added in percolate and account for its weight percent
Flocculant is mixed.The additive amount of flocculant can in right amount be adjusted according to the property difference of effusion in 0.5-5%.
(2) percolate is separated by solid-liquid separation by dissolved air flotation, obtains solid portion and liquid part；The step
(2) following steps are specifically included：Air-dissolving air-float is carried out to percolate, water adds to all or part of pending or treated
Simultaneously aerating is pressed, increases the Underwater sound field of water, is discharged in normal pressure, air is precipitated to form minute bubbles, is adhered to impurity wadding
On grain, wadding grain global density is caused to rise less than water, to make separation of solid and liquid, obtains solid portion and liquid part.
(3) solid and water is carried out to solid portion thoroughly to separate；Suspended matter and lower layer to the upper layer of liquid part it is heavy
Starch is sprayed by atomization and carries out gasification and pyrolysis processing in two sections of townhouse formula garbage pyrolysis gasification incinerators, is eventually converted into inorganic
Lime-ash and gas realize thoroughly processing.Two sections of townhouses formula garbage pyrolysis gasification incinerator includes two gentle to be pyrolyzed
Change the incinerator for thermal decomposition that technical process is connected.Townhouse refers to that pyrolysis oven both sides are combustion chamber heat supply, the both sides of combustion chamber
It is pyrolysis chamber, the pyrolysis chamber of both sides when combustion chambers burn.Combustion chamber and pyrolysis chamber number depend on the big for the treatment of capacity
It is small.The step (3) specifically includes following steps：Subsider will be introduced by the percolate of air-dissolving air-float processing, by solid-state portion
Water and solid-state in point separate, and by filtering, clear liquid is sent into sewage disposal system, and final process is that irrigation water or municipal administration are used
Water；The suspended matter for being located at topside position in liquid part and the sediment for being deposited in lower layer position are subjected to atomization and spray into two sections of connection
Row's formula garbage pyrolysis gasification incinerator carries out pyrolysis section and is pyrolyzed and gasifies, and is eventually converted into the gentle body of inorganic lime-ash, realizes
The processing of percolate simplifies and thoroughly.
Technical finesse provided by the invention is ingenious, than landfill leachate difficult to deal with letter by the way of pyrolytic gasification
Change and decrement, effectively reduces the processing cost and difficulty of landfill leachate, the technical method processing cost is low, to organic matter
Removal efficiency is high, and stable effluent quality, and impact resistance, load is strong, can effectively realize the processing of landfill leachate, conducive to pushing away extensively
Wide application.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in specific implementation modes disclosed and described above, to the present invention's
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although being used in this specification
Some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.Such as the present invention
Described in above-described embodiment, using same or similar treatment technology and method, all fall in the scope of protection of the present invention.
Claims (5)
1. a kind of leachate pyrolytic gasification treatment technology, which is characterized in that it includes the following steps：
(1) landfill leachate is filtered by grid, percolate and rubbish is separated, percolate enters processing system；
(2) percolate is separated by solid-liquid separation by dissolved air flotation, obtains solid portion and liquid part；
(3) solid and water is carried out to solid portion thoroughly to separate；The sediment of suspended matter and lower layer to the upper layer of liquid part
It is sprayed by atomization and carries out gasification and pyrolysis processing in two sections of townhouse formula garbage pyrolysis gasification incinerators, be eventually converted into inorganic lime-ash
And gas, realize thoroughly processing.
2. leachate pyrolytic gasification treatment technology according to claim 1, which is characterized in that the step (2) it
Before, after the primary separation of processing system, the flocculant progress for accounting for that its weight percent is 0.5-5% is added in percolate
Mixing.
3. leachate pyrolytic gasification treatment technology according to claim 1 or 2, which is characterized in that step (2) tool
Body includes the following steps：
Air-dissolving air-float is carried out to percolate, water pressurize and aerating to all or part of pending or treated, increases water
Underwater sound field, discharged in normal pressure, air is precipitated to form minute bubbles, be adhered to impurity wadding grain on, cause wadding grain it is whole
Volume density rises less than water, to make separation of solid and liquid, obtains solid portion and liquid part.
4. leachate pyrolytic gasification treatment technology according to claim 1, which is characterized in that the step (3) is specific
Include the following steps：Subsider will be introduced by the percolate of air-dissolving air-float processing, water and the solid-state in solid portion is separated,
By filtering, clear liquid is sent into sewage disposal system, and final process is irrigation water or municipal water use；It is upper by being located in liquid part
The suspended matter of layer position and the sediment for being deposited in lower layer position carry out atomization and spray into two sections of townhouse formula refuse pyrolysis gasification burnings
Stove carry out pyrolysis section be pyrolyzed and gasified, be eventually converted into the gentle body of inorganic lime-ash, realize percolate processing simplify and it is thorough
Bottom.
5. leachate pyrolytic gasification treatment technology according to claim 1, which is characterized in that two sections of townhouses formula rubbish
It is to be pyrolyzed the incinerator for thermal decomposition being connected with gasification process process that rubbish incinerator for thermal decomposition, which includes two,.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810041274.3A CN108328827A (en) | 2018-01-16 | 2018-01-16 | Leachate pyrolytic gasification treatment technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810041274.3A CN108328827A (en) | 2018-01-16 | 2018-01-16 | Leachate pyrolytic gasification treatment technology |
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| CN108328827A true CN108328827A (en) | 2018-07-27 |
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| CN201810041274.3A Pending CN108328827A (en) | 2018-01-16 | 2018-01-16 | Leachate pyrolytic gasification treatment technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424790A (en) * | 2018-03-06 | 2018-08-21 | 西安交通大学 | A kind of refuse gasification cogeneration system |
| CN109231319A (en) * | 2018-09-06 | 2019-01-18 | 上海焓净电力技术有限公司 | Evaporation burning zero discharge treatment device is melted down in a kind of Leachate site/waste water/waste oil atomization |
| CN109974003A (en) * | 2019-03-07 | 2019-07-05 | 张波 | A kind of townhouse formula refuse pyrolysis gasification furnace |
| CN110104907A (en) * | 2019-06-11 | 2019-08-09 | 武汉深能环保新沟垃圾发电有限公司 | A kind of landfill leachate oil removing system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850351A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for generating electricity by pyrolysis and incineration of waste |
| JP2015020136A (en) * | 2013-07-22 | 2015-02-02 | 株式会社クラレ | Method for treating landfill leachate |
| CN105776741A (en) * | 2016-03-23 | 2016-07-20 | 北京神雾环境能源科技集团股份有限公司 | Refuse pyrolysis comprehensive sewage treatment system and method |
| CN205635249U (en) * | 2016-03-23 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Garbage pyrolytic synthesizes processing system of sewage |
-
2018
- 2018-01-16 CN CN201810041274.3A patent/CN108328827A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850351A (en) * | 2010-05-10 | 2010-10-06 | 中国科学院广州能源研究所 | Novel method for generating electricity by pyrolysis and incineration of waste |
| JP2015020136A (en) * | 2013-07-22 | 2015-02-02 | 株式会社クラレ | Method for treating landfill leachate |
| CN105776741A (en) * | 2016-03-23 | 2016-07-20 | 北京神雾环境能源科技集团股份有限公司 | Refuse pyrolysis comprehensive sewage treatment system and method |
| CN205635249U (en) * | 2016-03-23 | 2016-10-12 | 北京神雾环境能源科技集团股份有限公司 | Garbage pyrolytic synthesizes processing system of sewage |
Non-Patent Citations (1)
| Title |
|---|
| 唐受印等: "《水处理工程师手册》", 30 April 2000, 化学工业出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424790A (en) * | 2018-03-06 | 2018-08-21 | 西安交通大学 | A kind of refuse gasification cogeneration system |
| CN108424790B (en) * | 2018-03-06 | 2020-08-28 | 西安交通大学 | Garbage gasification combined heat and power system |
| CN109231319A (en) * | 2018-09-06 | 2019-01-18 | 上海焓净电力技术有限公司 | Evaporation burning zero discharge treatment device is melted down in a kind of Leachate site/waste water/waste oil atomization |
| CN109974003A (en) * | 2019-03-07 | 2019-07-05 | 张波 | A kind of townhouse formula refuse pyrolysis gasification furnace |
| CN110104907A (en) * | 2019-06-11 | 2019-08-09 | 武汉深能环保新沟垃圾发电有限公司 | A kind of landfill leachate oil removing system and method |
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Application publication date: 20180727 |