CN105152256A - Fixed filler bed aeration stripping system used for removing groundwater carbon tetrachloride and method for removing groundwater carbon tetrachloride by using fixed filler bed aeration stripping system - Google Patents
Fixed filler bed aeration stripping system used for removing groundwater carbon tetrachloride and method for removing groundwater carbon tetrachloride by using fixed filler bed aeration stripping system Download PDFInfo
- Publication number
- CN105152256A CN105152256A CN201510662436.1A CN201510662436A CN105152256A CN 105152256 A CN105152256 A CN 105152256A CN 201510662436 A CN201510662436 A CN 201510662436A CN 105152256 A CN105152256 A CN 105152256A
- Authority
- CN
- China
- Prior art keywords
- aeration
- water
- aeration stripping
- packings
- tetracol phenixin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Physical Water Treatments (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a fixed filler bed aeration stripping system used for removing groundwater carbon tetrachloride. The system comprises an aeration stripping pool, a fixed filler bed and an aeration system, wherein the multi-layer fixed filler bed is arranged inside the aeration stripping pool, and the aeration system is arranged at the bottom of the aeration stripping pool; the aeration system adopts a microporous aeration disk, and is connected with an external gas source through a gas inlet; a mechanical exhaust system and a tail gas collecting device are arranged at the top of the aeration stripping pool; a water inlet and a water outlet are respectively formed in the upper part and the lower part of the side wall of the aeration stripping pool; the fixed filler bed adopts reducing substance filler loaded with iron particles. The invention also discloses a method for removing groundwater carbon tetrachloride by using the system. The method comprises the following steps: enabling raw water to enter the aeration stripping pool from the upper part; adjusting the gas water ratio and aeration intensity; determining the aeration rate; stripping carbon tetrachloride; collecting the carbon tetrachloride for processing; enabling processed water to enter a clean water reservoir, disinfecting the water, and discharging the water. According to the invention, the carbon tetrachloride removal effect can be improved by 20%, the construction and operation cost is low, and the water quality meets the national standard.
Description
Technical field
What the present invention relates to a kind of underground water source water supply plant Carbon Tetrachloride Contamination thing removes system and method, particularly efficient, the low consumption of underground water source water supply plant, the fixed bed padding aeration stripping tetracol phenixin treatment process of no coupling product, belong to Water purification technical field.
Background technology
Underground water accounts for 22.6% of global Freshwater resources total amount, and the people in the whole world 1/4 take underground water as drinking water source.There are 400 city exploiting groundwaters in China, and the feed rate of underground water has accounted for 20% of national total supply, more becomes main drinking water source at vast rural groundwater.
69 urban groundwater organic contaminations of 31 provinces in the whole nation detect and show, the component that in organic pollutant, recall rate is higher is mainly hydrochloric ether, detect frequency higher be tetracol phenixin, chloroform etc.Tetracol phenixin is quite stable in underground water, is difficult to decompose, and is typical hepatotoxic agent, during high density, is first affect central nervous system, affects liver, kidney subsequently; Lower concentration Long Term Contact then main manifestations, to the infringement of liver, kidney, is classified as among 129 kinds " in water priority pollutants Black Lists " and 68 kinds, China " in water priority pollutants Black List " by the U.S..
The method that in domestic and international underground water, Carbon Tetrachloride Contamination is administered mainly comprises showering technology and based technique for in-situ remediation: showering refers to and polluted water is collected into earth's surface by extraction system, and then take measures to process, mainly comprise passive collection and pump-and-treat system; In-situ immobilization does not then transport pollutent, but repairs under its envrionment conditions had, and mainly comprises permeability response grid, aeration process, chemical oxidation techniques, bioremediation technology, electric repairing technique etc.
Consider Financial cost and water supply security, the technical measures that water supply plant can adopt are active carbon adsorption technology, Biological Pretreatment Techniques and aeration stripping technology: 1) active carbon adsorption technology---gac is a kind of good water conditioner, activated carbon filter can be set up in water factory, tetracol phenixin in Adsorption water, but charcoal absorption is easily saturated, need periodic replacement, Financial cost is high; 2) Biological Pretreatment Techniques---biochemical treatment mainly utilizes the metabolism of microorganism to tetracol phenixin of degrading, the general required time of biochemical reaction is longer, because underground water Middle nutrition material is less, microorganism cannot obtain abundant nutrition, can not amount reproduction, good removal effect cannot be reached; 3) aeration stripping technology---aeration stripping is owned by France in physical method, can set up aeration stripping pond in water factory is utilize the difference between the actual concentrations of dissolved compound in water and equilibrium concentration, by volatile constituent constantly by Liquid Phase Diffusion in gas phase, reach and remove the object of volatile organic matter.
Comprehensive Correlation can find out that aeration stripping technology has certain advantage compared with other treatment processs, is the form mainly adopting stripping tower, but there is structure costly, and running cost is high, and secondary pollution problem, is mainly used in sewage treatment area.Therefore, existing aeration stripping technological treatment, processing parameter are not suitable for underground water source water supply plant, and underground water source water supply plant lacks the removing process method of the tetracol phenixin of simple and effective.
Summary of the invention
Technical problem to be solved by this invention is the defect existed for prior art, a kind of removing process method of underground water source water supply plant Carbon Tetrachloride Contamination thing is provided, tetracol phenixin in effective elimination water body, ensures that effluent quality meets country " drinking water sanitary standard " (GB5749-2006).
For solving this technical problem, the invention provides a kind of fixing bed of packings aeration stripping system for removing underground water tetracol phenixin, comprise aeration stripping pond, fixing bed of packings and aerating system, in described aeration stripping pond, arranging multiplayer fixes bed of packings, bottom it, aerating system is set, aerating system adopts microporous aeration disc, is connected with external air source by inlet mouth; Top, described aeration stripping pond arranges mechanical dust removal and tail gas collecting device, and its side wall upper part and bottom are respectively equipped with water-in and water outlet; Described fixing bed of packings adopts the reducing substance filler of load iron particle.
Described aeration stripping pond adopts formula structure of prancing, and divide three grades, current upper entering and lower leaving, submersion depth is not less than 3m.
3-4 layer established by described fixing bed of packings, every layer thickness 200mm-300mm; Described fixing bed of packings adopts the spherical suspending filling material of load iron particle, filler diameter 100mm, proportion 0.92-0.95g/cm
3, tamped density 50%-80%.
Described aerating system divides three grades, and every grade all can be measured separately and control, and adopt microporous aeration disc, under water 0.5m-1m, the bubble diameter of generation is 1mm ~ 3mm; The exit end of described aerating system arranges purging valve, and every lattice inlet pipe arranges gas meter, arranges gas distribution pipeline bottom aeration stripping pond in rich font.
Described mechanical dust removal adopts axial-flow exhaust fan, and be arranged on the air outlet on top, aeration stripping pond, body top, aeration stripping pond also arranges air pressure monitoring device, links with mechanical dust removal.
Described exhaust gas processing device is arranged on the top of mechanical dust removal, and adopt coal mass active carbon, grain diameter >=5mm, Penetrating curve >=70%, packing height is 800-1000mm.
The end of aerating system is provided with chlorine disinfectant point.
Present invention also offers and a kind ofly utilize fixing bed of packings aeration stripping system to remove the method for underground water tetracol phenixin, specifically comprise the steps:
1) contaminated tetracol phenixin former water current upper entering and lower leaving, enters aeration stripping pond from top water-in, and hydraulic detention time is 10min-30min, and submersion depth is not less than 3m;
2) according to the evolution with distance of aeration stripping pond internal contamination substrate concentration, gas-water ratio and aeration intensity is regulated;
3) according to gas-water ratio and aeration intensity determination aeration rate;
4) microbubble that bottom aerating system produces contacts with polluted water is reverse, and in aeration stripping pond, the bubble assembled in uphill process is cut microbubble by the fixed bed filler of layered arrangement again, and polluted water is evenly distributed, by tetracol phenixin stripping out;
5) tetracol phenixin overflowed is processed by the mechanical dust removal of aeration stripping Chi Ding and tail gas collecting device;
6) water outlet of treated water bottom the body of aeration stripping pond flows out, and enters the rear water outlet of clean water basin sterilization.
Described step 2) described gas-water ratio and aeration intensity determined by pollutent starting point concentration, when tetracol phenixin clearance is 50%, 80% and 90%, required gas-water ratio is respectively 1,2 and 3, and aeration intensity is 6-8L/ (m
2h).
Described aeration rate is determined according to gas-water ratio and aeration intensity, regulates gas-water ratio by purging valve and the gas meter be located in inlet pipe.
Beneficial effect: the present invention adopts the filler of load iron particle, can by difficult for part volatile organic contaminant, be reduced to volatile organic matter, compare simple aerating system, fixing bed of packings aeration stripping system can improve 20% to the removal effect of tetracol phenixin, thus improves its removal efficiency, and more conventional stripping tower construction and running cost obviously reduce, easily realize through engineering approaches application, aerating system current consumption and air demand obviously reduce; Can not only tetracol phenixin in effective elimination water body, and the tetracol phenixin discharged after effectively solving aeration stripping is to the pollution of environment, the Carbon Tetrachloride Contamination problem of different concns in water body can be tackled, ensure that effluent quality meets country " drinking water sanitary standard " (GB5749-2006).
Accompanying drawing explanation
Fig. 1 is the structural representation in aeration stripping pond of the present invention.
In figure: 1 aeration stripping pond, 2 fixing bed of packings, 3 aerating systems, 4 water-ins, 5 water outlets, 6 inlet pipe, 7 mechanical dust removals.
Embodiment
Below in conjunction with drawings and Examples, the present invention is specifically described.
Figure 1 shows that the structural representation in aeration stripping pond of the present invention.
The present invention includes aeration stripping pond 1, fixing bed of packings 2 and aerating system 3, in described aeration stripping pond 1, arranging multiplayer fixes bed of packings 2, arranges aerating system 3 bottom it, and aerating system 3 adopts microporous aeration disc, is connected with external air source by inlet mouth 6; Top, described aeration stripping pond 1 arranges mechanical dust removal 7 and tail gas collecting device, and its side wall upper part and bottom are respectively equipped with water-in 4 and water outlet 5; Described fixing bed of packings 2 adopts the reducing substance filler of load iron particle.
Described aeration stripping pond 1 adopts formula structure of prancing, and divide three grades, current upper entering and lower leaving, hydraulic detention time is 10min-30min, and submersion depth is not less than 3m.
3-4 layer established by described fixing bed of packings 2, every layer thickness 200mm-300mm; Described fixing bed of packings 2 adopts spherical suspending filling material, the reducing substance such as load iron particle on filler, filler diameter 100mm, proportion 0.92-0.95g/cm
3, tamped density 50%-80%.
Described aerating system 3 points three grades, every grade all can be measured separately and control, and according to the evolution with distance of pond internal contamination substrate concentration, regulates gas-water ratio and aeration ratio.
Described aerating system 3 adopts microporous aeration disc, 0.5m-1m under water, and the bubble diameter of generation is 1mm ~ 3mm.
The exit end of described aerating system 3 arranges purging valve, and every lattice inlet pipe arranges gas meter, is used for regulating gas-water ratio, arranges gas distribution pipeline bottom aeration stripping pond 1 in rich font.
Described mechanical dust removal 7 adopts axial-flow exhaust fan, is arranged on the air outlet on top, aeration stripping pond 1, and body top, aeration stripping pond 1 also arranges air pressure monitoring device, links with mechanical dust removal 7, accelerates the effusion speed of carbon tetrachloride gas in clean water basin.
Described exhaust gas processing device is arranged on the top of mechanical dust removal 7, adopts coal mass active carbon, grain diameter >=5mm, Penetrating curve >=70%, packing height is 800-1000mm, for adsorbing the carbon tetrachloride gas of overflowing from water, prevents the pollution to surrounding environment.
The end of aerating system 3 is provided with chlorine disinfectant point, reduces aeration to the impact of sterilisation effect.
The fixing layering filler of bed of packings 2 and micro-aeration of microporous aeration disc are the keys that the present invention removes tetracol phenixin effect quality, the mode that filler adopts multilayer to arrange, former water fully contacts with bubble in packing area, this kind of arrangement form is adopted to decrease the Duan Liu district of filler, add the contact probability of water, gas, film, multi-level continuous cutting is carried out to the air pocket of aeration plate release, thus reduction bubble diameter, increase the contact area of bubble and tetracol phenixin, improve the removal effect of tetracol phenixin, and energy-saving effect is good.
Utilize fixing bed of packings aeration stripping system to remove the method for underground water tetracol phenixin, specifically comprise the steps:
1) contaminated tetracol phenixin former water current upper entering and lower leaving, enters aeration stripping pond 1 from top water-in 4, and hydraulic detention time is 10min-30min, and submersion depth is not less than 3m;
2) according to the evolution with distance of aeration stripping pond 1 internal contamination substrate concentration, gas-water ratio and aeration intensity is regulated;
3) according to gas-water ratio and aeration intensity determination aeration rate;
4) microbubble that bottom aerating system 3 produces contacts with polluted water is reverse, in aeration stripping pond 1, the bubble assembled in uphill process is cut microbubble by fixed bed 2 filler of layered arrangement again, and polluted water is evenly distributed, by tetracol phenixin stripping out;
5) tetracol phenixin overflowed is processed by the mechanical dust removal 7 of aeration stripping Chi1Ding and tail gas collecting device;
6) water outlet 5 of treated water bottom the body of aeration stripping pond 1 flows out, and enters the rear water outlet of clean water basin sterilization.
Described step 2) described gas-water ratio and aeration intensity determined by pollutent starting point concentration, when tetracol phenixin clearance is 50%, 80% and 90%, required gas-water ratio is respectively 1,2 and 3, and aeration intensity is 6-8L/ (m
2h).
Described aeration rate is determined according to gas-water ratio and aeration intensity, regulates gas-water ratio by purging valve and the gas meter be located in inlet pipe.
Embodiments of the invention
The former hydromining underground water of certain water factory, design scale 50,000 m
3/ d, present technical process is deep-well pump house+clean water basin+suction well+booster pump chamber, wherein clean water basin two, and the volume of single seat clean water basin is 4000m
3, clean water basin planar dimension is 36m × 36m, and available depth is 3.2m, and sterilization adopts disinfection by chlorine dioxide.Find in water quality monitoring (WQM) in recent years, tetracol phenixin exceeds standard comparatively serious, and concentration, at 2 μ g/L-10 μ g/L, therefore needs to carry out technological transformation to it, is specifically implemented as follows.
(1) one, newly-built air blast machine room, planar dimension 10.8 × 7.8m, adopt two Root's blowers as source of the gas, parameter is: Q=37.5m
3/ min, P=39.2kpa, N=37Kw, the exit end of gas blower arranges purging valve, and inlet pipe arranges gas meter, is used for regulating gas-water ratio, gas-water ratio adjustable extent is 2:1-5:1, at the bottom of aeration tank, install boring aeration pipe, boring aeration pipe adopts annular configuration, the main caliber DN350 of aerating system, flow velocity is 12m/s, branch diameter DN50, tubing is stainless steel tube, and flow velocity is 5m/s.The Ball-type packing that layout three layers is novel above aerating system, every layer height 30cm, tamped density 60%.6 aerofoil fans are set above the body of pond, power 0.37KW, air quantity 3000m
3/ h, the activated carbon adsorption layer of 1000mm above aerofoil fan.
(2) under this operational conditions, investigate through the engineering practice of a year, result shows, whole system normal operation, and effluent quality is good, and in water outlet, Carbon Tetrachloride Concentration is lower than detection limit, and unit water producing cost increases by 0.07 yuan/m
3, other indexs all meet " drinking water sanitary standard " (GB5749-2006).
The present invention adopts the filler of load iron particle, can by difficult for part volatile organic contaminant, be reduced to volatile organic matter, compare simple aerating system, fixing bed of packings aeration stripping system can improve 20% to the removal effect of tetracol phenixin, thus improves its removal efficiency, and more conventional stripping tower construction and running cost obviously reduce, easily realize through engineering approaches application, aerating system current consumption and air demand obviously reduce; Can not only tetracol phenixin in effective elimination water body, and the tetracol phenixin discharged after effectively solving aeration stripping is to the pollution of environment, the Carbon Tetrachloride Contamination problem of different concns in water body can be tackled, ensure that effluent quality meets country " drinking water sanitary standard " (GB5749-2006).
The above-mentioned embodiment of the present invention, just illustrates, is not only, and the change within the scope of the present invention all or equivalent scope of the present invention is all surrounded by the present invention.
Claims (10)
1. one kind for removing the fixing bed of packings aeration stripping system of underground water tetracol phenixin, it is characterized in that: comprise aeration stripping pond (1), fixing bed of packings (2) and aerating system (3), the interior arranging multiplayer of described aeration stripping pond (1) fixes bed of packings (2), aerating system (3) is set bottom it, aerating system (3) adopts microporous aeration disc, is connected with external air source by inlet mouth (6); Described aeration stripping pond (1) top arranges mechanical dust removal (7) and tail gas collecting device, and its side wall upper part and bottom are respectively equipped with water-in (4) and water outlet (5); Described fixing bed of packings (2) adopts the reducing substance filler of load iron particle.
2. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to claim 1, is characterized in that: the employing of described aeration stripping pond (1) is pranced formula structure, points three grades, and current upper entering and lower leaving, submersion depth is not less than 3m.
3. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to claim 1, is characterized in that: described fixing bed of packings (2) establishes 3-4 layer, every layer thickness 200mm-300mm; Described fixing bed of packings (2) adopts the spherical suspending filling material of load iron particle, filler diameter 100mm, proportion 0.92-0.95g/cm
3, tamped density 50%-80%.
4. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to claim 1, it is characterized in that: described aerating system (3) divides three grades, every grade all can be measured separately and control, adopt microporous aeration disc, 0.5m-1m under water, the bubble diameter of generation is 1mm ~ 3mm; The exit end of described aerating system (3) arranges purging valve, and every lattice inlet pipe arranges gas meter, and gas distribution pipeline is arranged in rich font in aeration stripping pond (1) bottom.
5. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to claim 1, it is characterized in that: described mechanical dust removal (7) adopts axial-flow exhaust fan, be arranged on the air outlet on aeration stripping pond (1) top, aeration stripping pond (1) body top also arranges air pressure monitoring device, links with mechanical dust removal (7).
6. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to claim 1, it is characterized in that: described exhaust gas processing device is arranged on the top of mechanical dust removal (7), adopt coal mass active carbon, grain diameter >=5mm, Penetrating curve >=70%, packing height is 800-1000mm.
7. the fixing bed of packings aeration stripping system for removing underground water tetracol phenixin according to any one of claim 1-6, is characterized in that: the end of aerating system (3) is provided with chlorine disinfectant point.
8. utilize the fixing bed of packings aeration stripping system described in any one of claim 1-7 to remove a method for underground water tetracol phenixin, it is characterized in that, specifically comprise the steps:
1) contaminated tetracol phenixin former water current upper entering and lower leaving, enter aeration stripping pond (1) from top water-in (4), hydraulic detention time is 10min-30min, and submersion depth is not less than 3m;
2) according to the evolution with distance of aeration stripping pond (1) internal contamination substrate concentration, gas-water ratio and aeration intensity is regulated;
3) according to gas-water ratio and aeration intensity determination aeration rate;
4) microbubble that bottom aerating system (3) produces contacts with polluted water is reverse, the bubble assembled in uphill process is cut microbubble by fixed bed (2) filler of aeration stripping pond (1) interior layered arrangement again, and polluted water is evenly distributed, by tetracol phenixin stripping out;
5) mechanical dust removal that the tetracol phenixin overflowed is pushed up by aeration stripping pond (1) and tail gas collecting device process;
6) water outlet (5) of treated water bottom aeration stripping pond (1) body flows out, and enters the rear water outlet of clean water basin sterilization.
9. the method removing underground water tetracol phenixin according to claim 8, it is characterized in that: described step 2) described gas-water ratio and aeration intensity determined by pollutent starting point concentration, when tetracol phenixin clearance is 50%, 80% and 90%, required gas-water ratio is respectively 1,2 and 3, and aeration intensity is 6-8L/ (m
2h).
10. the method removing underground water tetracol phenixin according to claim 8, is characterized in that: described aeration rate is determined according to gas-water ratio and aeration intensity, regulates gas-water ratio by purging valve and the gas meter be located in inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662436.1A CN105152256B (en) | 2015-10-14 | 2015-10-14 | A kind of fixation packed bed aeration stripping system and method for being used to remove underground water carbon tetrachloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510662436.1A CN105152256B (en) | 2015-10-14 | 2015-10-14 | A kind of fixation packed bed aeration stripping system and method for being used to remove underground water carbon tetrachloride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105152256A true CN105152256A (en) | 2015-12-16 |
| CN105152256B CN105152256B (en) | 2017-07-21 |
Family
ID=54793384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510662436.1A Active CN105152256B (en) | 2015-10-14 | 2015-10-14 | A kind of fixation packed bed aeration stripping system and method for being used to remove underground water carbon tetrachloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105152256B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304071A (en) * | 2016-04-20 | 2017-10-31 | Qed环境系统有限责任公司 | Air stripper system and method |
| CN111606429A (en) * | 2020-05-29 | 2020-09-01 | 中国矿业大学 | Spraying aeration treatment system for volatile organic compound polluted underground water |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803662A (en) * | 2006-01-23 | 2006-07-19 | 浙江大学 | Method and equipment for removing organic chloride from wastewater |
| CN101898855A (en) * | 2010-07-16 | 2010-12-01 | 华东理工大学 | Integrated ex-situ repair system for underground water polluted by volatile organic compound |
| CN102367187A (en) * | 2011-04-28 | 2012-03-07 | 华东理工大学 | Chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process |
| CN205151816U (en) * | 2015-10-14 | 2016-04-13 | 山东省城市供排水水质监测中心 | A fixed bed of packings aeration blows system of taking off for desorption groundwater carbon tetrachloride |
-
2015
- 2015-10-14 CN CN201510662436.1A patent/CN105152256B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803662A (en) * | 2006-01-23 | 2006-07-19 | 浙江大学 | Method and equipment for removing organic chloride from wastewater |
| CN101898855A (en) * | 2010-07-16 | 2010-12-01 | 华东理工大学 | Integrated ex-situ repair system for underground water polluted by volatile organic compound |
| CN102367187A (en) * | 2011-04-28 | 2012-03-07 | 华东理工大学 | Chlorinated hydrocarbon-polluted underground water blowing oxidation and tail gas treatment process |
| CN205151816U (en) * | 2015-10-14 | 2016-04-13 | 山东省城市供排水水质监测中心 | A fixed bed of packings aeration blows system of taking off for desorption groundwater carbon tetrachloride |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107304071A (en) * | 2016-04-20 | 2017-10-31 | Qed环境系统有限责任公司 | Air stripper system and method |
| CN111606429A (en) * | 2020-05-29 | 2020-09-01 | 中国矿业大学 | Spraying aeration treatment system for volatile organic compound polluted underground water |
| CN111606429B (en) * | 2020-05-29 | 2022-01-14 | 中国矿业大学 | Spraying aeration treatment system for volatile organic compound polluted underground water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105152256B (en) | 2017-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101898855B (en) | Integrated ex-situ repair system for underground water polluted by volatile organic compound | |
| CN101905944B (en) | Composite-type sewage sludge treatment system for artificial wetland | |
| CN201534811U (en) | Multilayer pre-buried microbial vertical flow constructed wetland sewage treatment device | |
| CN104045205B (en) | Low-power-consumption integrated water purifying apparatus and water purifying method | |
| CN102259979A (en) | Novel bio-reaction bed and treatment method for landfill leachate | |
| CN204958480U (en) | Absorption - electrolysis - aeration is device of integration processing eutrophic water in coordination | |
| CN205151816U (en) | A fixed bed of packings aeration blows system of taking off for desorption groundwater carbon tetrachloride | |
| CN105152256A (en) | Fixed filler bed aeration stripping system used for removing groundwater carbon tetrachloride and method for removing groundwater carbon tetrachloride by using fixed filler bed aeration stripping system | |
| CN208378648U (en) | A kind of river black and odorous water fast purification device | |
| CN107098473B (en) | High-efficient microbial community integration denitrification device based on mineralized filler | |
| CN201914968U (en) | Micro-pore aeration flexible pipe with low ventilation volume | |
| CN206318832U (en) | Sewage treatment unit | |
| CN108218137A (en) | A kind of river black and odorous water fast purification method and device | |
| CN104355505B (en) | The treatment system of one way of life waste water | |
| CN200992507Y (en) | Spray-type semi-aerobic bio-film filtering bed | |
| JP4889269B2 (en) | Water purification equipment using microorganism-immobilized carrier | |
| CN104045206A (en) | UV (ultraviolet)/O3+BAF (biological aerated filter) advanced oxidation sewage treatment facility | |
| CN109775930B (en) | Method for treating landfill leachate based on GY-3 type filler matrix | |
| CN203256094U (en) | Integrated type sewage treatment equipment | |
| CN209872694U (en) | Domestic sewage treatment system | |
| CN207903981U (en) | A kind of efficient up-flow biological reaction apparatus | |
| CN101638284A (en) | Advanced sewage purification sterilization system | |
| CN201704171U (en) | Underground conservation-oriented integral domestic sewage treatment device | |
| CN105084550B (en) | A kind of design method of activated sludge absorption bed | |
| CN220165974U (en) | Microorganism purifying box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |