CN1278963C - Two stage treatment of distillation concentration and incineration of diffusion liquid from refuse burying site - Google Patents
Two stage treatment of distillation concentration and incineration of diffusion liquid from refuse burying site Download PDFInfo
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- CN1278963C CN1278963C CNB2004100427944A CN200410042794A CN1278963C CN 1278963 C CN1278963 C CN 1278963C CN B2004100427944 A CNB2004100427944 A CN B2004100427944A CN 200410042794 A CN200410042794 A CN 200410042794A CN 1278963 C CN1278963 C CN 1278963C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
Abstract
The present invention relates to a two-stage treatment method of evaporation incineration and evaporation concentration for the percolate of landfill sites, which belongs to the technical field of the garbage treatment of environmental protection. In order to solve the problem that the existing process for treating the percolate can not effectively prevent the secondary pollution of the landfill sites caused by poor treatment effect, high cost, etc. The present invention discloses a two-stage treatment method of evaporation incineration and evaporation concentration for the percolate of landfill sites; in the method, landfill gas or other commercial fuel is used as fuel; the present invention uses the immersion and evaporation technology which is divided into an evaporation incineration stage and an evaporation concentration stage which are respectively carried out by a first-stage evaporator and a second-stage evaporator. The two evaporators are respectively composed of a fuel combustion chamber and an evaporation chamber; the volatile organic matter from the percolate is evaporated as much as possible and then is destroyed by incineration in the first-stage evaporator. Water from the percolate is evaporated and the percolate is concentrated in the second-stage evaporator. The fume containing a large amount of volatile organic matter from the first-stage evaporator is removed by the incineration in the combustion chamber of the second-stage evaporator.
Description
Technical field
The invention belongs to the technology of garbage disposal field of environment protection, particularly the evaporation burning of landfill percolate and evaporation concentration two-stage treatment process.
Background technology
It is an important step of solid waste management that landfill is disposed, for a complete solid waste management system, and the landfill key element that is absolutely necessary.At present, the pollution of landfill yard control is still weak link, and the processing of landfill percolate is the difficult problem that efforts at environmental protection person faced all the time.Percolate output is big, Pollutant levels are high, the change of water quality scope is very big, not only annual more folded with the four seasons, the variation that alternately presents regularity in dry season, rainy season, and also show regular variation with landfill yard duration of service, maturity, and existing garbage leachate treatment process all exists complex process, the residence time is long, processing cost is high, the water quality after handling still has end item to be difficult to problems such as up to standard, can form pollution threat to surface water and underground water.
The percolate evaporation treatment process is not subjected to the influence of leachate quality mutability, has very strong capacity of resisting impact load.
Summary of the invention
The objective of the invention is to solve that existing percolate treating process is bad owing to treatment effect, cost is crossed high reason and can't effectively be prevented the landfill yard secondary pollution problem, the evaporation burning and the evaporation concentration two-stage treatment process of a kind of convenience, energy-conservation, efficient, economic landfill percolate is provided.
The invention discloses a kind of evaporation burning and evaporation concentration two-stage treatment process of landfill percolate, it is characterized in that: this method is a fuel with landfill gas or other merchantable fuels, adopt the submerged combustion evaporation technique, be divided into two stages of evaporation burning and evaporation concentration, realize that by one-level vaporizer and secondary evaporimeter double effect evaporator respectively comprises fuel combustion chamber, evaporator room and gas distribution system respectively;
Concrete treatment step is as follows:
The evaporation burning stage: at first, percolate stoste enters the evaporator room of one-level vaporizer after the recuperative heat exchanger preheating, make the fuel combustion chamber burning of fuel at the one-level vaporizer, and to indoor time of fuel combustion spray percolate or clear water with the indoor temperature of combustion of control fuel combustion at 850-1100 ℃, the high-temperature fuel gas that fuel combustion chamber is produced directly feeds in the liquid in the evaporator room of one-level vaporizer, gas distribution system by the one-level vaporizer is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make that percolate is tentatively concentrated in the one-level evaporator evaporation chamber;
In the evaporator room with described preliminary spissated percolate input secondary evaporimeter, the vaporised gas of one-level vaporizer generation is directly introduced the fuel combustion chamber of secondary evaporimeter with the one-level blower fan, in the fuel combustion chamber of secondary evaporimeter, control temperature of combustion at 850-1100 ℃ by the consumption of adjusting fuel, burn the noxious pollutant of removing in the one-level vaporised gas with this understanding;
The evaporation concentration stage: the high-temperature fuel gas that produces is directly fed in the liquid in the evaporator room of secondary evaporimeter, gas distribution system by secondary evaporimeter is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make the further evaporation concentration of percolate in the secondary evaporimeter evaporator room obtain final concentrated solution;
The vaporised gas that secondary evaporimeter produces is introduced described recuperative heat exchanger to the preheating of percolate stoste through exhaust fan.
The invention has the beneficial effects as follows: 1) this evaporation burning and evaporation concentration two-stage treatment process, two phase evaporation are motivated, realize respectively pollutent evaporation burning, pollutent function such as concentrate, through the evaporation burning and the co-evaporation effect in two stages of evaporation concentration, percolate is separated into gas phase, condensation phase and concentrates three parts mutually, avoided the situations that water and pollutent evaporate simultaneously, the energy is wasted in a large number.2) this evaporation burning and evaporation concentration two-stage treatment process can landfill gas be the energy, have realized that the unified of two secondary pollution sources of refuse landfill handled, and have reached the effect of " treatment of wastes with processes of wastes against one another ".3) UTILIZATION OF VESIDUAL HEAT IN has been realized, save energy in this evaporation burning and evaporation concentration two-stage treatment process inside.4) percolate is after this evaporation burning and evaporation concentration two-stage disposal methods, and volatile contaminant is removed through high temperature sintering, and difficult volatile contaminant concentrates on concentrated solution, but phlegma and tail gas qualified discharge.
Description of drawings
Fig. 1 is the evaporation burning of landfill percolate and the process flow sheet of evaporation concentration two-stage treatment process.
Embodiment
Further specify the present invention below in conjunction with accompanying drawing.
Two-stage treatment process of the present invention, with landfill gas or other merchantable fuels is fuel, adopt the submerged combustion evaporation technique, be divided into two stages of evaporation burning and evaporation concentration, realize that by one-level vaporizer and secondary evaporimeter double effect evaporator respectively comprises fuel combustion chamber, evaporator room and gas distribution system respectively.The one-level vaporizer is a purpose by burning destruction with evaporation volatile organic matter as much as possible from percolate again, and secondary evaporimeter is a purpose with transpiring moisture from percolate, concentrated leachate.The flue gas that contains a large amount of volatile organic matters that the evaporation burning stage (one-level vaporizer) produces burns through the combustion chamber of secondary evaporimeter and removes.Through the evaporation burning and the co-evaporation effect in two stages of evaporation concentration, percolate is separated into gas phase, condensation phase and concentrates three parts mutually.The vaporizer that the present invention uses can adopt following structure: vaporizer comprises confession landfill gas and combustion air burnt fuel combustion chamber within it, and the evaporator room of evaporation percolate, the fuel combustion chamber interior is lined with refractory materials, the sidewall on evaporator room top is provided with vapor pipe, the middle part is provided with the liquid-inlet pipe of input percolate, the bottom is provided with the drain pipe of discharging concentrated solution, the fuel combustion chamber bottom is immersed in the liquid of evaporator room, the fuel combustion chamber bottom is provided with the gas distribution weir, the porous air distribution plate is arranged in the evaporator room liquid, is positioned at top, gas distribution weir.Gas distribution weir and porous air distribution plate have been formed the gas distribution system of vaporizer.
Concrete steps are as follows:
The evaporation burning stage: at first, percolate stoste enters the evaporator room 2 of one-level vaporizer after recuperative heat exchanger 5 preheatings, make fuel combustion chamber 1 burning of fuel at the one-level vaporizer, and in fuel combustion chamber 1, return spray percolate or clear water with the temperature of combustion in the control fuel combustion chamber 1 at 850-1100 ℃, the high-temperature fuel gas that fuel combustion chamber 1 is produced directly feeds in the liquid in the evaporator room 2 of one-level vaporizer, gas distribution system by the one-level vaporizer is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make that percolate is tentatively concentrated in the one-level evaporator evaporation chamber 2;
In the evaporator room 4 with described preliminary spissated percolate input secondary evaporimeter, with the vaporised gas of one-level blower fan with the generation of one-level vaporizer, mainly form by volatile organic matter, water vapor, carbonic acid gas, nitrogen, directly introduce the fuel combustion chamber 3 of secondary evaporimeter, in the fuel combustion chamber 3 of secondary evaporimeter, control temperature of combustion at 850-1100 ℃ by the consumption of adjusting fuel, burn the noxious pollutants of removing in the one-level vaporised gas such as volatile organic matter with this understanding;
The evaporation concentration stage: the high-temperature fuel gas that produces is directly fed in the liquid in the evaporator room 4 of secondary evaporimeter, gas distribution system by secondary evaporimeter is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make the further evaporation concentration of percolate in the secondary evaporimeter evaporator room 4 obtain final concentrated solution;
The vaporised gas that secondary evaporimeter produces mainly is made up of water vapor, carbonic acid gas, nitrogen, introduces the preheating of 5 pairs of percolate stoste of described recuperative heat exchanger through exhaust fan.
This two-stage treatment process double effect evaporator synergy and independent separately, realize difference in functionality respectively, system's control is convenient, the level of automation height, solved that treatment process high-temperature fuel gas in the past is difficult to shunt, the equipment room coupling related too high, system is unstable, be difficult to realize the problem of automatization.
This two-stage treatment process can make percolate concentrate more than 10 times, and phlegma water quality can reach national respective standard requirement, can effectively control the pollution of landfill percolate.Simultaneously, the exhaust temperature of this two-stage treatment process is lower than 70 ℃, has reduced energy wastage, saves the energy more than other evaporation process method, equal treatment scale, and the landfill gas consumption can be cut down more than 50% at most.
Claims (1)
1. the evaporation burning of landfill percolate and evaporation concentration two-stage treatment process, it is characterized in that: this method is a fuel with landfill gas or other merchantable fuels, adopt the submerged combustion evaporation technique, be divided into two stages of evaporation burning and evaporation concentration, realize that by one-level vaporizer and secondary evaporimeter double effect evaporator respectively comprises fuel combustion chamber, evaporator room and gas distribution system respectively;
Concrete treatment step is as follows:
The evaporation burning stage: at first, percolate stoste enters the evaporator room of one-level vaporizer after the recuperative heat exchanger preheating, make the fuel combustion chamber burning of fuel at the one-level vaporizer, and to indoor time of fuel combustion spray percolate or clear water with the indoor temperature of combustion of control fuel combustion at 850-1100 ℃, the high-temperature fuel gas that fuel combustion chamber is produced directly feeds in the liquid in the evaporator room of one-level vaporizer, gas distribution system by the one-level vaporizer is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make that percolate is tentatively concentrated in the one-level evaporator evaporation chamber;
In the evaporator room with described preliminary spissated percolate input secondary evaporimeter, the vaporised gas of one-level vaporizer generation is directly introduced the fuel combustion chamber of secondary evaporimeter with the one-level blower fan, in the fuel combustion chamber of secondary evaporimeter, control temperature of combustion at 850-1100 ℃ by the consumption of adjusting fuel, burn the noxious pollutant of removing in the one-level vaporised gas with this understanding;
The evaporation concentration stage: the high-temperature fuel gas that produces is directly fed in the liquid in the evaporator room of secondary evaporimeter, gas distribution system by secondary evaporimeter is torn into micro-bubble with high-temperature fuel gas, with the liquid direct contact heat transfer, make the further evaporation concentration of percolate in the secondary evaporimeter evaporator room obtain final concentrated solution;
The vaporised gas that secondary evaporimeter produces is introduced described recuperative heat exchanger to the preheating of percolate stoste through exhaust fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100427944A CN1278963C (en) | 2004-05-28 | 2004-05-28 | Two stage treatment of distillation concentration and incineration of diffusion liquid from refuse burying site |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100427944A CN1278963C (en) | 2004-05-28 | 2004-05-28 | Two stage treatment of distillation concentration and incineration of diffusion liquid from refuse burying site |
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| Publication Number | Publication Date |
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| CN1583612A CN1583612A (en) | 2005-02-23 |
| CN1278963C true CN1278963C (en) | 2006-10-11 |
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| CNB2004100427944A Expired - Fee Related CN1278963C (en) | 2004-05-28 | 2004-05-28 | Two stage treatment of distillation concentration and incineration of diffusion liquid from refuse burying site |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110695A (en) * | 2016-07-04 | 2016-11-16 | 清华大学 | The submerged combustion evaporation enrichment facility of high salt organic liquid waste and method |
| US10907828B2 (en) | 2018-01-16 | 2021-02-02 | Tsinghua University | Integrated treatment method of two-stage submerged combustion evaporation for organic waste liquid |
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| CN101979921B (en) * | 2010-10-13 | 2012-07-04 | 上海泰欣环保设备成套有限公司 | Process for spraying and treating percolate |
| CN103241886B (en) * | 2013-05-20 | 2014-07-09 | 彭万旺 | Treatment process of wastewater containing organic matters |
| CN106044905A (en) * | 2016-06-29 | 2016-10-26 | 清华大学 | Evaporation treatment system of high-salinity organic wastewater |
| CN106044908A (en) * | 2016-06-29 | 2016-10-26 | 清华大学 | Evaporation treatment process of high-salinity organic waste water |
| CN106315984B (en) * | 2016-09-30 | 2019-05-31 | 江西东江环保技术有限公司 | The processing method of landfill percolate |
| CN107830535A (en) * | 2017-12-04 | 2018-03-23 | 陕西鑫鼎能源开发有限公司 | Environment-friendly and energy-efficient well fracturing returns discharge opeing fired vapour device |
| CN108249495B (en) * | 2018-01-16 | 2019-09-20 | 清华大学 | Two-period form submerged combustion evaporation integrated apparatus |
| CN108840385A (en) * | 2018-08-09 | 2018-11-20 | 北京鑫磊华易达技术有限公司 | A kind of high-concentration waste water circulation heat exchange multi-effect evaporation system and its evaporation technology |
| CN110482630B (en) * | 2019-09-25 | 2021-03-16 | 清华大学 | Direct contact evaporation treatment equipment and method utilizing flue gas heat |
| CN110482628A (en) * | 2019-09-25 | 2019-11-22 | 清华大学 | Utilize the direct contact evaporation process device and method thereof of steam exhaust heat |
| CN110479745A (en) * | 2019-09-25 | 2019-11-22 | 清华大学 | Flying dust processing equipment and its method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106110695A (en) * | 2016-07-04 | 2016-11-16 | 清华大学 | The submerged combustion evaporation enrichment facility of high salt organic liquid waste and method |
| US10907828B2 (en) | 2018-01-16 | 2021-02-02 | Tsinghua University | Integrated treatment method of two-stage submerged combustion evaporation for organic waste liquid |
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| CN1583612A (en) | 2005-02-23 |
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Granted publication date: 20061011 Termination date: 20120528 |