CN204824498U - Landfill leachate zero release processing system - Google Patents
Landfill leachate zero release processing system Download PDFInfo
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- CN204824498U CN204824498U CN201520221224.5U CN201520221224U CN204824498U CN 204824498 U CN204824498 U CN 204824498U CN 201520221224 U CN201520221224 U CN 201520221224U CN 204824498 U CN204824498 U CN 204824498U
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Abstract
The utility model discloses a landfill leachate zero release processing system can guarantee that processing system reaches the zero release problem of filtration liquid under low treatment cost's the circumstances, and it contains filtration liquid filter, MVR forced circulation evaporation system, degree of depth processing system and spray drying system, the MVR forced circulation evaporation system includes plate heat exchanger, heater, separation chamber, vapor compressor, condensation water pitcher, final condenser and to the abluent online cleaning system of heater, untreated filtration liquid passes through the pipeline and gets into filtration liquid filter, the input of exit linkage to the MVR forced circulation evaporation system of filtration liquid filter, and the condensate outlet of MVR forced circulation evaporation system passes through tube coupling to degree of depth processing system, the concentrate export of MVR forced circulation evaporation system is through tube coupling to spray drying system.
Description
Technical field
The utility model relates to a kind of garbage percolation liquid treating system, specifically for the zero discharge treatment of percolate.
Background technology
Along with the quickening of Re-search on Urbanization process, urban population constantly increases, scale constantly expands, and the rubbish thereupon produced becomes multiple to increase.The Yi Chao U.S. of China, occupies first place in the world with annual 1200000000 tons.The urban solid garbage of China's majority adopts the method for landfill or burning to process.In garbage loading embeading stacking process, be called percolate owing to producing a kind of waste water with high-enriched organics or inorganics under the various extraneous factor effects such as extruding.Its change of water quality scope is very big, and organic pollutant category is many, concentration is high, and has multiple carcinogens, short cancer thing, epicarcinogen, prominent carcinogens and metal ion.When percolate penetrates in underground water, surface water, namely pollute surface water quality, underground water loses use value, causes direct impact to HUMAN HEALTH and industrial or agricultural water source.Due to percolate complicated component, there is higher toxicity and there is again high cod values, high ammonia-nitrogen content simultaneously, make landfill leachate treatment difficulty very big.
All there is the problem of Concentrated liquid recharge in current domestic refuse leachate treatment technology, whole refuse landfill can regard a large bio-reactor as, although leachate recirculation can temporarily make organism in concentrated solution at landfill yard internal breakup, but the salinity in percolate particularly heavy metal ion can not decompose, but along with the prolongation of landfill yard landfill time, salinity in percolate will be more and more higher, and the more and more difficult steady running of percolation liquid treating system is even paralysed.Main leachate treatment technology mainly contains UASB+A/O/A/O+MBR+RO technique, DTRO technique, MVC+DI technique at present, and its technical characterstic is as follows:
UASB+A/O/A/O+MBR+RO technique, there is complex process, technique chain is long, system management difficulty is large.This technique is recharged due to its concentrated solution 25% ~ 35%, percolate salinity in field can be caused constantly to accumulate, finally cause the imbalance of its front end biochemical system bacterium dead, the blocking of rear end membranous system salt is serious, therefore there is the problems such as continuous run stability difference in it, and at northern area, during winter operation, its biochemical part and membrane portions are subject to weather effect larger.Later stage run accessory and film replacement charge higher.These problems just percolate process these years also exist the problem place of " reach product not up to standard, up to standard do not reach product " always.
DTRO technique, carry out mandatory filtration by the diaphragm of high pressure completely, running cost is high, and water outlet yields poorly, and concentrated solution is up to 45% ~ 55%, and the problems such as winter operation difficulty is large, the later stage runs accessory and membrane module rapid wear and price is high.
MVC+DI technique, percolate is under the condition of evaporation, easy degraded part COD in percolate goes out with the band of gas with the form of VFA (VOC), its ammonia nitrogen contained also can with gas overflowing simultaneously, this technique rely on ion exchange resin by containing band distilled water in COD and ammonia nitrogen exchange adsorption, although can allow standard water discharge like this, but resins exchange is limited in one's ability, treatment capacity is extremely low, can not go back unmodified resin in time after supersaturation will be breakdown, causes system and can not steady and continuous produce.And saturated after when needing regenerating resin cost high, greatest problem is in resin reduction process, produces a large amount of waste liquid containing ammonia nitrogen and COD, causes secondary pollution again.
Above-mentioned technique all has concentrated liquid measure is large or fouling is serious problem or produces the problem of a large amount of secondary liquid waste.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of percolate zero-discharge treatment system is provided, can ensure that treatment system is issued to the zero release problem of percolate in the situation of reduction process cost, and whole treating processes belongs to physical process, therefore percolate process in all parts of the country is applicable to, little to leachate quality influence of fluctuations, ensure that the long-term stability of system is run.
The utility model solves the technical scheme that its technical problem adopts: percolate zero-discharge treatment system, comprises the percolate strainer by pipeline connection, MVR forced circulation evaporation system, advanced treatment system and spray drying system; MVR forced circulation evaporation system comprises plate-type heat exchanger, well heater, separate chamber, vapour compressor, condensate water pot, final condenser and on-line cleaning system; Described on-line cleaning system comprises Rubber ball pump, secondary filter, ball collector, glueballs ball collecting device;
Untreated percolate enters percolate strainer by pipeline, the outlet of percolate strainer is connected to the input terminus of MVR forced circulation evaporation system, MVR forced circulation evaporation system comprises condensation-water drain and concentrated solution outlet, and condensation-water drain is connected to advanced treatment system by pipeline; The concentrated solution outlet of described MVR forced circulation evaporation system is connected to spray drying system by pipeline, and spray drying system includes sludge outlet, and sludge outlet is connected with mud outward transport assembly by pipeline.
Further: percolate filter outlet is by the percolate entrance of pipeline connecting plate type interchanger, and the percolate outlet of plate-type heat exchanger is connected to the entrance of final condenser, and the condensation-water drain of final condenser is connected to condensate water pot by pipeline; The percolate outlet of final condenser is connected to separate chamber by pipeline; The percolate outlet of separate chamber is connected to the heat transfer tube tube side of well heater by pipeline, this section of pipeline is provided with propeller pump; Top, described separate chamber is provided with secondary steam outlet, and secondary steam outlet is connected to vapour compressor by pipeline, and the vapour outlet of vapour compressor is communicated to the shell side inlet of well heater;
Described well heater is provided with condensation-water drain, and condensation-water drain is connected to condensate water pot by pipeline; Described well heater is also provided with concentrated solution outlet, and concentrated solution outlet is connected to described spray drying system by pipeline, and this section of pipeline is connected with concentrate pump;
The condensation-water drain of described condensate water pot is connected to the condensing water inlet of plate-type heat exchanger by pipeline, this section of pipeline is provided with condensate pump; The condensation-water drain of plate-type heat exchanger is connected to advanced treatment system by pipeline, and described advanced treatment system includes product water outlet.
Further: in described on-line cleaning system, glueballs collector is arranged on the inside of separate chamber, is furnished with web plate in glueballs collector; The outlet of glueballs collector is connected to ball collector by pipeline, and this section of pipeline is also provided with Rubber ball pump; Described ball collector offers the pitching mouth for dropping into glueballs; Described ball collector by pipeline connection to heater base; The diameter of described glueballs is more than or equal to the caliber of the heat transfer tube of well heater; The quantity of described glueballs is 10% of well heater heat transfer tube quantity.
The utility model compared with prior art has the following advantages:
The utility model has energy-conserving and environment-protective, technology chain is simple, processing cost is low, Integration Design, with the advantage opened with stopping; When specific works, untreated percolate enters percolate strainer, is removed by the tiny suspended particle in percolate, enters liquid plate interchanger and water of condensation heat exchange, enter final condenser thereupon, enter separate chamber with after final noncondensable gas heat exchange; Percolate is delivered to the heat transfer tube tube side of well heater by the propeller pump bottom separate chamber, exchange with the high temperature secondary steam heat of well heater heat transfer tube shell side, percolate is made to be in sensible heat state, percolate enters separate chamber's flash separation thereupon, and the secondary steam of generation is delivered to the percolate heat exchange of well heater heat transfer tube shell side and well heater heat transfer tube tube side after vapour compressor pressurization temperature raising; The high-temperature steam of well heater heat transfer tube shell side is then condensed into water, is collected to condensate water pot, is delivered to liquid plate interchanger and untreated percolate heat exchange penetration depth treatment system later by condensate pump; In advanced treatment system, ammonia nitrogen in the water of condensation sent into overflows from water of condensation, react with sulphuric acid soln in advanced treatment system, generate ammoniumsulphate soln, sulphuric acid soln in advanced treatment system can form the ammoniumsulphate soln of higher concentration and purity, reclaim the ammonia nitrogen in percolate, the later water of condensation of deamination forms qualified product water after being removed by a small amount of volatile organic matter be entrained with in MVR evaporative process in advanced treatment system again and drains into outside system; Ultrafiltration nanofiltration system produce about 10% concentrated solution be back to MVR forced circulation evaporation system front end continue process; The high density concentrated solution that MVR forced evaporation system produces enters spray drying system, a small amount of moisture in concentrated solution is separated out, obtain the mud of water ratio about 50%, be transported to hazardous waste disposal center after being discharged by mud outward transport assembly and carry out burning disposal.Whole treating processes zero release, thoroughly, equipment cost is low in process.
Due to the high density concentrated solution that the evaporation of MVR forced circulation evaporation system produces, its moisture content is lower, comparatively easily soft dirt is formed in well heater heat transfer tube, affect the steady running of vapo(u)rization system, therefore the utility model also adopts glueballs on-line cleaning system for well heater is equipped with, and removes the soft dirt of heat transfer tube internal surface in evaporative process in real time; Glueballs is entered cloth ball device through Rubber ball pump water flow pressure by described glueballs on-line cleaning system, relend the pressure effect helping propeller pump current, by the clean glueballs crushed heat transfer tube of diameter slightly larger than well heater heat transfer tube, heat exchanging inside pipe wall carries out clean scouring, heat transfer tube internal dirt is taken away with current, glueballs is through the glueballs collector of circulation fluid to separate chamber, under the obstruction of glueballs collector web plate, glueballs is separated, released by Rubber ball pump and enter ball collector, iterative cycles like this is to the heat transfer tube continuous wash of well heater.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of embodiment of the present utility model;
Fig. 2 is structure principle chart of the present utility model.
Description of reference numerals:
1-percolate strainer, 2-plate-type heat exchanger, 3-final condenser, 4-separate chamber, 5-glueballs collector, 6-Rubber ball pump, 7-ball collector, 8-well heater, 9-condensate water pot, 10-condensate pump, 11-secondary filter, 12-propeller pump, 13-concentrate pump, 14-spray drying system, 15-advanced treatment system, 16-vapour compressor, 17-mud outward transport assembly.
Embodiment
Below in conjunction with drawings and Examples, the utility model embodiment is described:
As shown in Figure 1, it illustrates a kind of embodiment of the present utility model, as shown in the figure, the utility model discloses a kind of percolate zero-discharge treatment system, it mainly comprises percolate strainer 1, MVR forced circulation evaporation system, advanced treatment system 15 and spray drying system 14.MVR forced circulation evaporation system comprises coming liquid plate interchanger 2, well heater 8, separate chamber 4, vapour compressor 17, condensate water pot 9, final condenser 3 and on-line cleaning system; Described on-line cleaning system comprises Rubber ball pump 6, secondary filter 11, ball collector 7, glueballs ball collecting device 5; The utility model has energy-conserving and environment-protective, technology chain is simple, processing cost is low, Integration Design, with the advantage opened with stopping.
As shown in the figure, the utility model comprises the percolate strainer by pipeline connection, MVR forced circulation evaporation system, advanced treatment system and spray drying system; MVR forced circulation evaporation system comprises plate-type heat exchanger, well heater, separate chamber, vapour compressor, condensate water pot, final condenser and on-line cleaning system; Described on-line cleaning system comprises Rubber ball pump, secondary filter, ball collector, glueballs ball collecting device;
As shown in the figure, untreated percolate enters percolate strainer by pipeline, the outlet of percolate strainer is connected to the input terminus of MVR forced circulation evaporation system, MVR forced circulation evaporation system comprises condensation-water drain and concentrated solution outlet, condensation-water drain is connected to advanced treatment system by pipeline, the concentrated solution outlet of described MVR forced circulation evaporation system is connected to spray drying system by pipeline, spray drying system includes sludge outlet, and sludge outlet is connected with mud outward transport assembly by pipeline.
As shown in the figure, percolate filter outlet is by the percolate entrance of pipeline connecting plate type interchanger, and the percolate outlet of plate-type heat exchanger is connected to the entrance of final condenser, and the condensation-water drain of final condenser is connected to condensate water pot by pipeline; The percolate outlet of final condenser is connected to separate chamber by pipeline; The percolate outlet of separate chamber is connected to the heat transfer tube tube side of well heater by pipeline, this section of pipeline is provided with propeller pump; Top, described separate chamber is provided with secondary steam outlet, and secondary steam outlet is connected to vapour compressor by pipeline, and the vapour outlet of vapour compressor is communicated to the shell side inlet of well heater;
As shown in the figure, described well heater is provided with condensation-water drain, and condensation-water drain is connected to condensate water pot by pipeline; Described well heater is also provided with concentrated solution outlet, and concentrated solution outlet is connected to described spray drying system by pipeline, and this section of pipeline is connected with concentrate pump;
As shown in the figure, the condensation-water drain of described condensate water pot is connected to the condensing water inlet of plate-type heat exchanger by pipeline, this section of pipeline is provided with condensate pump; The condensation-water drain of plate-type heat exchanger is connected to advanced treatment system by pipeline, and described advanced treatment system includes product water outlet.
Preferably, as shown in the figure, in described on-line cleaning system, glueballs collector is arranged on the inside of separate chamber, is furnished with web plate in glueballs collector; The outlet of glueballs collector is connected to ball collector by pipeline, and this section of pipeline is also provided with Rubber ball pump; Described ball collector offers the pitching mouth for dropping into glueballs; Described ball collector by pipeline connection to heater base; The diameter of described glueballs is more than or equal to the caliber of the heat transfer tube of well heater; The quantity of described glueballs is 10% of well heater heat transfer tube quantity.
Above-described embodiment operationally, untreated percolate enters percolate strainer, is removed by the tiny suspended particle in percolate, enters liquid plate interchanger and water of condensation heat exchange, enter final condenser thereupon, enter separate chamber with after final noncondensable gas heat exchange; Percolate is delivered to the heat transfer tube tube side of well heater by the propeller pump bottom separate chamber, exchange with the high temperature secondary steam heat of well heater heat transfer tube shell side, percolate is made to be in sensible heat state, percolate enters separate chamber's flash separation thereupon, and the secondary steam of generation is delivered to the percolate heat exchange of well heater heat transfer tube shell side and well heater heat transfer tube tube side after vapour compressor pressurization temperature raising; The high-temperature steam of well heater heat transfer tube shell side is then condensed into water, is collected to condensate water pot, is delivered to liquid plate interchanger and untreated percolate heat exchange penetration depth treatment system later by condensate pump; In advanced treatment system, ammonia nitrogen in the water of condensation sent into overflows from water of condensation, react with sulphuric acid soln in advanced treatment system, generate ammoniumsulphate soln, sulphuric acid soln in advanced treatment system can form the ammoniumsulphate soln of higher concentration and purity, reclaim the ammonia nitrogen in percolate, the later water of condensation of deamination forms qualified product water after being removed by a small amount of volatile organic matter be entrained with in MVR evaporative process in advanced treatment system again and drains into outside system; Ultrafiltration nanofiltration system produce about 10% concentrated solution be back to MVR forced circulation evaporation system front end continue process; The high density concentrated solution that MVR forced evaporation system produces enters spray drying system, a small amount of moisture in concentrated solution is separated out, obtain the mud of water ratio about 50%, be transported to hazardous waste disposal center after being discharged by mud outward transport assembly and carry out burning disposal.
Due to the high density concentrated solution that the evaporation of MVR forced circulation evaporation system produces, its moisture content is lower, comparatively easily soft dirt is formed in well heater heat transfer tube, affect the steady running of vapo(u)rization system, therefore our glueballs on-line cleaning system above-mentioned for well heater is equipped with, removes the soft dirt of heat transfer tube internal surface in real time in evaporative process; In described glueballs on-line cleaning system, described glueballs collector is arranged on the inside of separate chamber, is furnished with web plate in glueballs collector; The outlet of glueballs collector is connected to ball collector by pipeline, and this section of pipeline is also provided with Rubber ball pump; Described ball collector offers the pitching mouth for dropping into glueballs; Described ball collector by pipeline connection to heater base; Glueballs enters cloth ball device through Rubber ball pump water flow pressure, relend the pressure effect helping propeller pump current, by the clean glueballs crushed heat transfer tube of diameter slightly larger than well heater heat transfer tube, heat exchanging inside pipe wall carries out clean scouring, heat transfer tube internal dirt is taken away with current, and glueballs, through the glueballs collector of circulation fluid to separate chamber, is separated glueballs under the obstruction of glueballs collector web plate, released by Rubber ball pump and enter ball collector, iterative cycles like this is to the heat transfer tube continuous wash of well heater.
By reference to the accompanying drawings the utility model preferred implementation is explained in detail above, but the utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.
Do not depart from design of the present utility model and scope can make many other and change and remodeling.Should be appreciated that the utility model is not limited to specific embodiment, scope of the present utility model is defined by the following claims.
Claims (3)
1. percolate zero-discharge treatment system, is characterized in that: comprise the percolate strainer by pipeline connection, MVR forced circulation evaporation system, advanced treatment system and spray drying system; MVR forced circulation evaporation system comprises plate-type heat exchanger, well heater, separate chamber, vapour compressor, condensate water pot, final condenser and on-line cleaning system; Described on-line cleaning system comprises Rubber ball pump, secondary filter, ball collector, glueballs ball collecting device;
Untreated percolate enters percolate strainer by pipeline, the outlet of percolate strainer is connected to the input terminus of MVR forced circulation evaporation system, MVR forced circulation evaporation system comprises condensation-water drain and concentrated solution outlet, and condensation-water drain is connected to advanced treatment system by pipeline; The concentrated solution outlet of described MVR forced circulation evaporation system is connected to spray drying system by pipeline, and spray drying system includes sludge outlet, and sludge outlet is connected with mud outward transport assembly by pipeline.
2. percolate zero-discharge treatment system as claimed in claim 1, it is characterized in that: percolate filter outlet is by the percolate entrance of pipeline connecting plate type interchanger, the percolate outlet of plate-type heat exchanger is connected to the entrance of final condenser, and the condensation-water drain of final condenser is connected to condensate water pot by pipeline; The percolate outlet of final condenser is connected to separate chamber by pipeline; The percolate outlet of separate chamber is connected to the heat transfer tube tube side of well heater by pipeline, this section of pipeline is provided with propeller pump; Top, described separate chamber is provided with secondary steam outlet, and secondary steam outlet is connected to vapour compressor by pipeline, and the vapour outlet of vapour compressor is communicated to the shell side inlet of well heater;
Described well heater is provided with condensation-water drain, and condensation-water drain is connected to condensate water pot by pipeline; Described well heater is also provided with concentrated solution outlet, and concentrated solution outlet is connected to described spray drying system by pipeline, and this section of pipeline is connected with concentrate pump;
The condensation-water drain of described condensate water pot is connected to the condensing water inlet of plate-type heat exchanger by pipeline, this section of pipeline is provided with condensate pump; The condensation-water drain of plate-type heat exchanger is connected to advanced treatment system by pipeline, and advanced treatment system includes product water outlet.
3. percolate zero-discharge treatment system as claimed in claim 1 or 2, is characterized in that: in described on-line cleaning system, glueballs collector is arranged on the inside of separate chamber, is furnished with web plate in glueballs collector; The outlet of glueballs collector is connected to ball collector by pipeline, and this section of pipeline is also provided with Rubber ball pump; Described ball collector offers the pitching mouth for dropping into glueballs; Described ball collector by pipeline connection to heater base; The diameter of described glueballs is more than or equal to the caliber of the heat transfer tube of well heater; The quantity of described glueballs is 10% of well heater heat transfer tube quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221224.5U CN204824498U (en) | 2015-04-12 | 2015-04-12 | Landfill leachate zero release processing system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520221224.5U CN204824498U (en) | 2015-04-12 | 2015-04-12 | Landfill leachate zero release processing system |
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| CN204824498U true CN204824498U (en) | 2015-12-02 |
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| CN201520221224.5U Expired - Fee Related CN204824498U (en) | 2015-04-12 | 2015-04-12 | Landfill leachate zero release processing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111115735A (en) * | 2020-02-26 | 2020-05-08 | 大连广泰源环保科技有限公司 | Two-stage forced circulation evaporation system and process for landfill leachate |
| CN112408532A (en) * | 2019-12-20 | 2021-02-26 | 陈俊 | Low-temperature concentration device for treating garbage leachate through sectional dehydration |
-
2015
- 2015-04-12 CN CN201520221224.5U patent/CN204824498U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112408532A (en) * | 2019-12-20 | 2021-02-26 | 陈俊 | Low-temperature concentration device for treating garbage leachate through sectional dehydration |
| CN111115735A (en) * | 2020-02-26 | 2020-05-08 | 大连广泰源环保科技有限公司 | Two-stage forced circulation evaporation system and process for landfill leachate |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20160412 |