CN105293748A - Movable type low-pressure reverse-osmosis device for removing pollutants from coalbed-gas production water - Google Patents
Movable type low-pressure reverse-osmosis device for removing pollutants from coalbed-gas production water Download PDFInfo
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- CN105293748A CN105293748A CN201410286968.5A CN201410286968A CN105293748A CN 105293748 A CN105293748 A CN 105293748A CN 201410286968 A CN201410286968 A CN 201410286968A CN 105293748 A CN105293748 A CN 105293748A
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Abstract
The invention relates to a movable type low-pressure reverse-osmosis device for removing pollutants from coalbed-gas production water. Test operation results show that the movable type low-pressure reverse-osmosis device provided by the invention has a removal rate of 98.1% and 94.7% to TDS and F in effluent water respectively. Since the contents of the TDS and the F in the effluent water are lower than the contents described in a Farmland Irrigation Water Quality Standard (GB 50842005) and a Livestock-and-poultry Drinking-water Quality Standard (NY 50272008), so the effluent water can be used as agricultural irrigation water and livestock-and-poultry drinking water. The device provided by the invention can be loaded in a movable type container and applied in treatment of produced wastewater from different coalbed gas wells in a region. The device has the advantages of good treatment effect, simple operation method, small occupied area, low operation cost, strong movability, and applicability to coalbed gas production wells with a large number and a small water yield and to end treatment of the coalbed-gas production water in remote areas.
Description
Technical field
The present invention relates to a kind of packaged type equipment removing coal bed gas product water pollutant.Treatment effect is good, and method is simple to operate, and floor space is little, and running cost is low, and mobility is strong, is applicable to the many and coal bed gas product water end-o f-pipe-control of coal-seam gas gas producing well that water production rate is little and remote districts of those quantity.
Background technology
China Coal Bed Methane Resource rich reserves, is currently in a fast-developing period.But the waste water that association gas production produces becomes an environmental problem urgently to be resolved hurrily.The water quality and quantity of coal bed gas product water alters a great deal at different mining phase.Its water quality presents weakly alkaline, and suspension content is high, and saltiness is high, and fluorion (F) exceeds standard.Coal bed gas product waste water directly enters water body if not treated, can endanger hydrobiont, also can spoiled soil structure, reduces crop yield, even jeopardizes the safety of underground water.
The method of conventional process coal bed gas product waste water has ion exchange method, nanofiltration, capacitance method and reverse osmosis membrane etc.Reverse osmosis membrane is the most frequently used a kind for the treatment of technology, has removal efficiency high, simple operation and other advantages.Current, main flow be focus on method, namely connected by the wastewater collection of each field with "nine squares" output in region to together by pipeline, and then concentrate with reverse osmosis membrane and process, the pollutent in removal waste water.But the coal bed gas product waste water water yield in some area is little, and geographical position is not easy to pipeline laying, also exists in mountain area as similar in mining area, Yang Jia valley, Liulin, Shanxi county and build pipeline difficulty, and the problem that Meteorological is high.Have human hair to understand a kind of coal bed gas produced water deep treatment equipment (patent No.: CN101786755A), but this portable equipment is mainly for the treatment of remaining dense water after reverse osmosis method or the process of electrodialysis embrane method before.And research and develop a kind of little and effectively to process the new device of high suspended matter, high salt and high F waste water very necessary for this individual well water production rate.
Summary of the invention
The object of the present invention is to provide a kind of packaged type equipment removing coal bed gas product water pollutant, effectively can remove the pollutents such as suspended substance, inorganic salt and the F in coal bed gas product water, make water outlet can reuse up to standard, realize the recycling of water resources, and avoid direct discharging of waste water to the pollution of local soil water body.
In order to realize above-mentioned target, the present invention adopts low pressure reverse osmosis technology (Figure 1A), and the preprocessing part be specifically made up of flocculation-precipitation-filtration process and reverse osmosis membrane two portions form.The all devices of low pressure reverse osmosis technology is mounted in a movable container, comprises flocculation agent bucket (b), static mixer (c), reaction tank (d), settling tank (e), active oxidation aluminium pot (f), quartz sand tank (g), charcoal canister (h), Scale inhibitors bucket (i), cartridge filter (j), low pressure reverse osmosis membranous system (k) and pure water collection case (1).
Wherein, the polymerize aluminum chloride in described (b), its flocculation sediment effect, is separated suspended substance, colloid and throw out with water fast and precipitates, and reduces the turbidity of waste water.
Wherein, the activated alumina in described (f) can remove F in waste water by active adsorption.
Wherein, the quartz sand in described (g) can filter further removes suspended substance in water and colloid.
Wherein, the gac in the step of D described in described (h) effectively can remove look, peculiar smell and partial organic substances in waste water.
Wherein, the Scale inhibitors in described (i) inorganic substance calcium in anti-sealing, magnesium, barium can deposit fouling in a device.
Wherein, the cartridge filter in described (j), removes the fine particles of turbidity more than 1 degree, removes particulate matter residual in water further, prevents the suspended particle of failing in pre-treatment to remove completely or newly produce from entering reverse osmosis system.
Wherein, the low-pressure reverse osmosis membrane (model: ESPA2-4040) in described (k) can remove the inorganic ion of more than 95%, and water outlet flows in pure water collection case.
TDS and F of water outlet, all lower than " agricultural irrigation water quality standard (GB5084-2005) " and " livestock and poultry water quality standard for drinking water (NY5027-2008) ", can be used as agricultural irrigation water and livestock and poultry tap water.
Apparatus of the present invention tool has the following advantages:
1 device is good, with strong points to TDS and the F removal effect in coal bed gas product waste water, is applicable to the coal bed gas product water processing high salt height F.
2 devices are simple to operate, and floor space is little, and cost is low, and mobility is strong, and the amount of being applicable to is many and the coal bed gas product water end-o f-pipe-control of coal-seam gas gas producing well that water production rate is little and remote districts, and can improve the service efficiency of this device.
What 3 devices adopted is low-pressure reverse osmosis membrane, and working pressure little (1.05MPa), consumes energy low.
4 device process water outlets reach " agricultural irrigation water quality standard (GB5084-2005) " and " livestock and poultry water quality standard for drinking water (NY5027-2008) ", can be used as agricultural irrigation water and livestock and poultry tap water, achieve the recycle of water resources.
Accompanying drawing explanation
Figure 1A is packaged type low pressure reverse osmosis coal bed gas product wastewater processing technology schema of the present invention
Figure 1B is packaged type low pressure reverse osmosis coal bed gas product wastewater treatment equipment schematic diagram (plot plan) of the present invention
Embodiment:
Coal bed gas field recovered water has the features such as high salinity, high salinity and high suspended matter.Meanwhile, certain organism, fluorion etc. is also had.Be positioned at mountain area and the little feature of production water flow for some coal bed gas well, develop the packaged type low pressure reverse osmosis device of a set of removal coal bed gas product water pollutant.Concrete wastewater treatment scheme is as follows:
Coal bed gas product waste water is mixed into reaction tank through flocculant poly aluminum chloride (concentration is 10% ~ 15%) by 1, and flocculation sediment effect makes suspended substance, colloid and throw out be separated with water fast and precipitate, and reduces turbidity of wastewater;
2, through being equipped with the adsorption tower of activated alumina (thickness is 60cm), can remove the fluorion in waste water;
3 through being equipped with the sandfiltration pot of quartz sand (thickness is 60cm), interception suspended substance and macrobead thing;
4, through being equipped with the hay tank of activated carbon (thickness is 60cm), can tackle suspended particle and colloid further.And look, peculiar smell and the partial organic substances in adsorbable waste water;
5 through being equipped with chemicals dosing plant and the cartridge filter of Scale inhibitors, inorganic substance in anti-sealing deposit fouling in a device, and the pollutent such as fine particles, iron rust of turbidity more than 1 degree can be removed, prevent the suspended particle of failing in pre-treatment to remove completely or newly produce from entering reverse osmosis system, protection high-pressure pump and reverse osmosis membrane, ensure the normal operation of reverse osmosis system;
6 through low-pressure reverse osmosis membrane, the inorganic ion of more than 95% can be removed.Water outlet reaches " agricultural irrigation water quality standard (GB5084-2005) " and " livestock and poultry water quality standard for drinking water (NY5027-2008) ", can be used as agricultural irrigation water and livestock and poultry tap water.
Apparatus of the present invention principal character is:
By all devices by method flow subsequent application in the casing of a 7m × 2.4m × 2.4m (see Figure 1B).Container base installs four tires, is provided with door and window, and engine can be utilized conveniently to realize the movement of integral device.Have that floor space is little, warming, wind resistance fire prevention and the advantage such as mobility is strong.Can need according to scene the output waste water processing different coal gas well, improve equipment efficiency of usage.
In conjunction with this device of example in detail specific implementation method:
Treatment unit of the present invention is applied to coal-bed gas exploitation district, Yang Jia valley, Liulin County, Lvliang City, Shanxi Province.The existing exploitation being carried out coal-seam gas by Zhong Lian coal-bed gas exploitation company of this coal field, now belongs to the trial production stage.The floor space of individual well is 50m × 30m.Individual well production water extracts ground through oil pumper, by Cemented filling to the settling tank of a 4m × 3m × 3m near or be lined with in the heatable adobe sleeping platform of one deck plastics.Through natural sedimentation, evaporation and seepage effect, remaining waste water need employ car to transport outward discharge arbitrarily.The TDS content of waste water is 2743-6227mg/L, F content is 4.4-17.8mg/L.The average daily output waste water of the 8# well that we select is about 6-8 ton.
As follows according to the concrete treating processes of apparatus of the present invention to this well output waste water:
With pump by the wastewater disposal basin near 8# well
(a)in waste water be extracted in the reaction tank (d) in removable case.Water inlet flow velocity is about 2m
3/ h.In the process, the polymerize aluminum chloride ejector in flocculation agent case (b) is squeezed in inlet channel, and enter reaction tank (d) after static mixer (c).With pump, the waste water in settling tank (e) is flowed into activated alumina tank (f), quartz sand tank (g), charcoal canister (h) and cartridge filter (j), and the Scale inhibitors in Scale inhibitors bucket (i) is injected by the pipeline ejector entering cartridge filter at waste water.Enter low pressure reverse osmosis membranous system (k) through cartridge filter water outlet, water outlet flows in water storing tank (1).Reverse osmosis water outlet flow is 1.2m
3/ h, can be used as agricultural irrigation water and livestock and poultry tap water.Once waste water in 8# well pond is all processed and only need 3-4h, then this whole plant can be transported to other coal bed gas well process waste water.
The packaged type low pressure reverse osmosis coal bed gas product method of wastewater treatment principal feature of the present invention's research and development is as follows:
1 treatment effect is good, is respectively 98.1% and 94.7% to the clearance of TDS and F in coal bed gas product waste water;
2 is simple to operate, and floor space is little, and cost is low, and mobility is strong, and can improve the utilising efficiency of equipment, the impact by the external conditions such as weather, weather is little;
3 adopt low-pressure reverse osmosis membrane, and working pressure little (1.05MPa), consumes energy low.
4 water outlets reach " agricultural irrigation water quality standard (GB5084-2005) " and " livestock and poultry water quality standard for drinking water (NY5027-2008) ", can be used as agricultural irrigation water and livestock and poultry tap water.
Claims (8)
1. remove a packaged type low pressure reverse osmosis device for coal bed gas product water pollutant, it is characterized in that: by raw water pump, the coal bed gas product water in wastewater disposal basin (a) is evacuated in the reaction tank in mobile tank.In the process, the polymerize aluminum chloride in flocculation agent bucket (b) is injected inlet channel by ejector, and complete in static mixer (c) and be mixed into reaction tank (d); Water outlet flows in settling tank (e); Through lift pump effect, water outlet is pumped in active oxidation aluminium pot (f), then through quartz sand tank (g) and charcoal canister (h); Filter out water and flow into cartridge filter (j), in the process, the Scale inhibitors in Scale inhibitors bucket (i) is injected inlet channel by ejector; After cartridge filter (j), water outlet enters low pressure reverse osmosis membranous system (k), in the water access pure water collection case after process (l).
2. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, it is characterized in that, all devices except raw wastewater pond (a) and device are all installed in a movable container according to processing technological flow.
3. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, it is characterized in that, polymerize aluminum chloride in described (b), suspended substance, colloid and throw out in waste water can be separated with waste water and precipitate by its flocculation sediment effect fast.
4. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, it is characterized in that, the activated alumina in described (f) is for removing the fluorion in waste water.
5. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, is characterized in that, the quartz sand in described (g), filters the suspended substance in removal water and colloid.
6. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, is characterized in that, the gac in described (h), effectively removes look, peculiar smell and partial organic substances in waste water.
7. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, it is characterized in that, Scale inhibitors in described (i) and (j) and cartridge filter, be respectively used to prevent the calcium in waste water, magnesium and barium from depositing fouling in a device and remove particulate matter residual in water and iron rust further, prevent the suspended particle of failing in pre-treatment to remove completely or newly produce from entering reverse osmosis system.
8. a kind of packaged type low pressure reverse osmosis device removing coal bed gas product water pollutant according to claim 1, it is characterized in that, reverse osmosis membrane system in described (k), can remove the inorganic ion of more than 95%, and water outlet flows in pure water collection case (l).TDS and F of water outlet, all lower than " agricultural irrigation water quality standard (GB5084-2005) " and " livestock and poultry water quality standard for drinking water (NY5027-2008) ", can be back to irrigated farmland and livestock and poultry tap water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410286968.5A CN105293748A (en) | 2014-06-25 | 2014-06-25 | Movable type low-pressure reverse-osmosis device for removing pollutants from coalbed-gas production water |
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| CN201410286968.5A CN105293748A (en) | 2014-06-25 | 2014-06-25 | Movable type low-pressure reverse-osmosis device for removing pollutants from coalbed-gas production water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620484A (en) * | 2020-06-10 | 2020-09-04 | 中联煤层气有限责任公司 | Treatment method and treatment device for three-gas combined production water |
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| CN201268606Y (en) * | 2008-09-17 | 2009-07-08 | 南京师范大学 | Low-pressure reverse osmosis water processor |
| CN102557289A (en) * | 2010-12-22 | 2012-07-11 | 中国科学院研究生院 | Movable coalbed methane-produced wastewater treatment method |
| CN102745830A (en) * | 2011-04-18 | 2012-10-24 | 中国科学院研究生院 | Movable treatment assembly for water generated from coalbed gas |
| CN103794259A (en) * | 2014-01-03 | 2014-05-14 | 北京师范大学 | Method of treating strontium and cesium in radioactive wastewater by small-sized low-pressure reverse osmosis system |
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- 2014-06-25 CN CN201410286968.5A patent/CN105293748A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201268606Y (en) * | 2008-09-17 | 2009-07-08 | 南京师范大学 | Low-pressure reverse osmosis water processor |
| CN102557289A (en) * | 2010-12-22 | 2012-07-11 | 中国科学院研究生院 | Movable coalbed methane-produced wastewater treatment method |
| CN102745830A (en) * | 2011-04-18 | 2012-10-24 | 中国科学院研究生院 | Movable treatment assembly for water generated from coalbed gas |
| CN103794259A (en) * | 2014-01-03 | 2014-05-14 | 北京师范大学 | Method of treating strontium and cesium in radioactive wastewater by small-sized low-pressure reverse osmosis system |
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| CN111620484A (en) * | 2020-06-10 | 2020-09-04 | 中联煤层气有限责任公司 | Treatment method and treatment device for three-gas combined production water |
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Application publication date: 20160203 |