CN201817341U - Drinking water treatment device - Google Patents
Drinking water treatment device Download PDFInfo
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- CN201817341U CN201817341U CN2010205709168U CN201020570916U CN201817341U CN 201817341 U CN201817341 U CN 201817341U CN 2010205709168 U CN2010205709168 U CN 2010205709168U CN 201020570916 U CN201020570916 U CN 201020570916U CN 201817341 U CN201817341 U CN 201817341U
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- backwash
- adsorption
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- accommodating body
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Abstract
The utility model discloses a drinking water treatment device mainly comprising an accommodating body, a water distributor, a primary adsorption structure including a non-polar adsorption filler layer, a secondary adsorption structure including a polar adsorption filler layer, a back washing system, an automatic control system, etc. When raw water is treated, the raw water passes through the non-polar filler layer and the polar filler layer in sequence, non-polar organic matters in water, which are unfavorable for HAAs (Haloacetic acids) adsorption, are removed in advance, and the follow-up HAAs adsorption by the polar filler layer is fully completed. Meanwhile, carbon loss caused by high reverse washing strength is avoided, the required height for preventing the filler loss during reverse washing is lowered, and the components and operation related to operation working condition and reverse washing working condition are simplified. By adopting the drinking water treatment device having the advantages of small volume, lower operation energy consumption, easiness in operation, convenience in management, and the like, HAAS in water can be effectively removed.
Description
Technical field
The utility model relates to the drink water purifying technical field, the especially a kind of appliance for treating drinking water that can effectively remove halogen acetic acid.
Background technology
Along with industrial, agriculture continuous development, a large amount of pollutents enters water body by different approach, and it is day and night outstanding that drinking water source is subjected to pollution problems.At specific quality problem, corresponding patent is constantly arranged, as CN101028945A " fluorine-removing biological sterilizer for water source ", CN101486506 " a kind of arsenic removing apparatus for drinking water ", CN101654307 " a kind of device of removing phthalic ester in the tap water ", solve the water hygiene safety problem technically, but so far, yet there are no the patent announcement of removing at disinfection byproduct (DBP) halogen acetic acid in the tap water.
At present, most countries in the world, particularly the tap water of developing country is handled the conventional treatment process that adopts " coagulation → precipitation → sand filtration → throwing chlorine disinfectant " basically, and is fine to suspended contaminant in the water, removal of bacteria effect, but dissolved organic matter is not had the place to go effect substantially.Particularly when last link of tap water treatment process was thrown chlorine disinfectant, the reaction of organism and chlorine generated the great disinfection byproduct (DBP) of carcinogenic risk---halogen acetic acid (HAAs) in the water, and HUMAN HEALTH is constituted harm greatly.Because HAAs has non-volatile, polarity, the time that exists in water is long, and its persistence influence is very big.Developed countries such as America and Europe are to the existing strict concentration limit standard of HAAs in the tap water, China has just made regulation at present in " drinking water sanitary standard " unconventional test item, the maximum permission of HAAs mass concentration is 150 μ g/L, wherein dichloro acetic acid (DCAA) is 50 μ g/L, and trichoroacetic acid(TCA) (TCAA) is 100 μ g/L.
The possible method that halogen acetic acid is removed comprises: physics, chemistry and biological method.It is feasible relatively that the membrane sepn of physical method is handled, and it is used the subject matter that exists and is: the replacing inconvenience of film, operation power consumption expense are big, can isolate the material that needn't separate from water in a large number, and concentrated solution is disposed difficulty etc.There is the chemical reaction intermediate product in chemical method, reaches the problem of the health risk assessment of the organism participation reaction by product that generates in the water, seldom is used for the tap water actual treatment at present.The biological method cost is low, be a kind of more promising method, but the problem of the aspects such as pathogenic risk control that how (January the time of several months) at least at most HAAs effectively removes before the filler biofilm, how biofilm artifact amount is kept meets the demands, microorganism is run off is still waiting to solve at present.
So remove the halogen acetic acid in the tap water how simply, effectively, becoming this area has technical problem to be solved.
The utility model content
At above-mentioned the deficiencies in the prior art, the primary technical problem that solves of the utility model is, provide a kind of can simple and effective appliance for treating drinking water.
In order to solve the problems of the technologies described above, adopted following technical scheme in the utility model:
A kind of appliance for treating drinking water, its characteristics are, comprise an accommodating body, and the accommodating body upper end is connected with water inlet pipe; Accommodating body inner chamber upper end is horizontally arranged with the water distributor that is connected with water inlet pipe; Be disposed with one-level adsorption structure and secondary absorption structure downwards in the accommodating body inner chamber of water distributor below; The one-level adsorption structure comprises the first recoil filler interception net that from top to bottom sets gradually, nonpolar adsorption stuffing layer, the first filler support screen cloth, the first filler supporting plate; Described secondary absorption structure comprises the second recoil filler interception net, polar adsorption packing layer, the second filler support screen cloth, the second filler supporting plate that from top to bottom sets gradually; The accommodating body bottom of secondary absorption structure below is provided with rising pipe; Also include the backwash system.
In the technical program, described water distributor can make water inlet evenly.At nonpolar adsorption stuffing layer described in the one-level adsorption structure for to constitute, to the adsorptivity height of nonpolar organic matter in the water by nonpolar adsorption stuffing particle; The described first recoil filler interception net and the first filler support mesh structure are similar, are the reticulate body of aperture less than nonpolar adsorption stuffing grain diameter, and wherein the first recoil filler interception net is used to prevent that filler is flushed away when backwash; The described first filler supporting plate is the tabular body with eyelet, and its perforation hole area makes it not influence the carrying out that normally crosses water and backwash in that the first filler supporting plate can should be tried one's best greatly under the prerequisite of its superstructure of support.Secondary absorption structure and one-level adsorption structure integral body are similar, but its polar adsorption packing layer is for polar adsorption filler particles formation, to water Semi-polarity molecule HAAs high adsorption capacity.Wherein as optimizing, the filler in the described nonpolar adsorption stuffing layer adopts nonpolar activated carbon granule, and the filler in the described polar adsorption packing layer adopts the polarity activated carbon granule.Described nonpolar activated carbon granule is common activated carbon granule, and described polarity activated carbon granule is the activated carbon granule of absorption polarity HAAs molecule ability greater than common gac 2-5 times; Both are existing particulate material, can directly buy the already present existing goods of existing market.
Adopted in the technical scheme in the drinking water treatment field because of with low cost, implemented convenient and technology adsorption stuffing layer absorption that often use, adsorption stuffing has also adopted the activated carbon granule of advantages of good adsorption effect.But the applicant considers also and only adopts common activated carbon granule that there are some problems in the removal that is used for water HAAs.At first, gac is a kind of non-polar adsorbent with the big П key of carbon skeleton, and non-polar molecule organism, particularly benzene series organism, band conjugated double bond organism in the water are shown stronger adsorptive power.The organism that resembles small molecules natural humic acid, this quasi-molecule band benzene ring structure of phthalic ester is easy to adsorb on gac, this type organic is prevalent in the source water, conventional tap water treatment process almost can not remove, so also constituted organism common in the tap water.And the HAAs(halogen acetic acid) be a kind of polar molecule, common gac is very little to its loading capacity, according to the research document, HAAs solution for the high purity water configuration, in equilibrium concentration all is the scope of tens μ g/L, gac seldom surpasses several mg/g to the loading capacity of HAAs, and phthalate is all surpassed 100mg/g usually.When the tap water of nonpolar organic matter with the HAAs coexistence contacts with common gac, competitive adsorption can take place in nonpolar organic matter and HAAs, and because the nonpolar organic matter molecule in the advantage absorption of non-polar adsorbent gac, makes the bad HAAs absorption of original absorption property become more difficult.So, in the technical program, adopted the form of two-stage adsorption structure, in the one-level adsorption structure, adopted nonpolar activated carbon granule (being common activated carbon granule) as sorbent material, elder generation is with the nonpolar organic matter in the tap water, and other solid impurities absorption are held back; And then in the secondary absorption structure, adopt polarity activated carbon granule (finger polar molecule HAAs adsorptive power) as sorbent material greater than the gac of common gac more than 2 times, water Semi-polarity HAAs molecule and remainder solid impurity are adsorbed hold back.The utility model adopts simple structure, has strengthened the absorption removal effect to halogen acetic acid greatly.Reached the purpose of removing halogen acetic acid in the tap water effectively.
Backwash system in the such scheme, can adopt following optimization, described backwash system comprises by a three-way control valve and is connected backwash rising pipe on the water inlet pipe, is connected backwash water inlet pipe on the rising pipe by another three-way control valve, also is provided with the backwash water pump on the backwash water inlet pipe.This is because in the ortho-water treatment unit backwash system, all is to adopt water intaking valve, outlet valve, backwash water intaking valve, four control valves of backwash outlet valve to control, and it is many to have a valve, and cost is big, the defective of complicated operation; Use three-way control valve instead and control, can be simplified the internal structure of an organization, reduce cost, make the simpler purpose of operation control.
Three-way control valve in the above-mentioned backwash system can adopt following optimizing structure, described three-way control valve comprises a valve body, valve inner has a spheric valve pocket, make the maximization of kindred circumstances lower valve chamber volume, water flow velocity in the chamber is less, and current are to the impact loss of chamber inner member when having reduced operation control.Valve body has three Link Ports that are positioned on the same diameter circle side face of ball-type valve pocket, be provided with to coupling the ball crown type end socket in the valve body valve pocket, the ball crown type end socket is connected with a rotation connecting rod by strengthening gusset, the two ends of rotation connecting rod rotatably are arranged at valve cavity wall, it is outside and be provided with handle that the one end stretches out valve pocket, rotates the rotation connecting rod by handle and can make the ball crown type end socket block that any makes two other conducting in three Link Ports.The three-way control valve of this spline structure can reach any two the anastomosing purposes of Link Port of control by the rotation of controls revolution connecting rod, and than common three-way control valve, its structure is simpler, and function is optimized, and cost is cheaper.Wherein as further optimizing, described reinforcement gusset is positioned at the diameter circle side face at three Link Port places; This is that above-mentioned reinforcement gusset of optimizing structure can reach and adopt minimum material to transmit maximum effect of torque, and the resistance that water was subjected to is as far as possible little because three-way control valve is to drive the ball crown type end socket by the rotation connecting rod to rotate when using.Strengthened the reliability that three-way control valve uses.
Another optimization as the backwash system, described backwash system also comprises one second backwash rising pipe, described one-level adsorption structure and secondary absorption spacing structure are provided with, the described second backwash rising pipe is on the accommodating body sidewall between one-level adsorption structure and the secondary absorption structure, and the second backwash rising pipe is provided with outlet water control valve.Like this, when backwash, can earlier the second backwash rising pipe be opened and regulate water outlet, the addle of going out from the secondary absorption structure when making backwash is discharged from the second backwash rising pipe earlier, treat to clean in the secondary absorption structure relatively cleaner after, close the second backwash rising pipe again, so that the one-level adsorption structure is cleaned.Booties such as the solid impurity particle of going out from the secondary absorption structure in the time of can avoiding backwash are like this stopped by the one-level adsorption structure or sneak in the adsorption stuffing layer of one-level adsorption structure, so improved backwash quality and efficient.
One-step optimization again on the basis of setting up the backwash system also comprises automatic control system, and automatic control system comprises electronic management system and be arranged at the level sensor electrode between the water distributor and one-level adsorption structure in the accommodating body that the level sensor electrode links to each other with electronic management system; The other end of rotation connecting rod stretches out the valve pocket outside and is provided with motor drive mechanism in the described three-way control valve, and motor drive mechanism links to each other with electronic management system; Outlet water control valve on the described second backwash rising pipe is the motor-operated control valve that links to each other with electronic management system; Described backwash water pump links to each other with electronic management system.Wherein said motor drive mechanism can be the device that small type stepping motor etc. can be exported rotary torque.After having set up automatic control system like this, when device uses for some time, adsorption stuffing increases gradually because of holding back pollutent, the contaminated gradually thing of hole is full of, discharge capacity reduces gradually, the water level of one-level adsorption structure top can go up gradually, after increasing to level sensor electrode position place, the level sensor electrode detection is to signal and send to electronic management system, electronic management system is by the control to three-way control valve, backwash water pump and outlet water control valve, start the backwash procedure that presets, backwash procedure finishes the back automatic control device and returns to the normal sorption handling procedure.Wherein, electronic management system concrete structure and concrete control process, the ordinary skill and the knowledge of employing field of electric control is not so be introduced at this.
As another optimization, described accommodating body cross section is circular, described water distributor is straight water distributor, water distributor is provided with water distributing pore, water distributor is positioned at accommodating body inner wall section circular diameter position, and described water distributing pore evenly replaces into 90 ° of layouts along both sides, water distributor below, and described water distributor diameter reduces gradually along entrance end to end, greater than interlude, described water distributing pore arrangement pitches interlude is less than inlet section and latter end greater than latter end in the water distributing pore aperture of described water distributor inlet section.Wherein, the accommodating body cross section is circular, can adopt minimum material to obtain maximum water treatment space, the optimization setting of water distributing pore shape and position on water distributor shape and its, can be in the little accommodating body that guarantees substantially at circular cross section of the less situation of water distributor materials consumption water distribution uniformity, reduce load impact, improve adsorption effect.
As an optimization again, described accommodating body top is provided with openable non-tight cover plate.Cover plate can prevent that foreign object such as dust from entering, and non-tight can guarantee to be communicated with atmosphere in the accommodating body, the assurance normal sorption.
In sum, than prior art, the utility model has following advantage: 1, adopt the form of two-stage adsorption structure, make that nonpolar organic matter molecule and the solid particle polluter in the tap water is adsorbed removal in the one-level adsorption structure; Rest parts solid particle polluter and polarity HAAs molecule can be adsorbed removal in secondary absorption mechanism, adopt the mode of two-stage absorption targetedly like this, can get rid of water Semi-polarity halogen acetic acid molecule very effectively, also very good to the adsorption effect of other materials simultaneously, and simple in structure, implementation cost is cheap.The optimization of 2, backwash system can simplify the internal structure of an organization, operate, and reduces cost, and reduces the control complexity and improves the backwash effect.The automatic control system of 3, setting up can reach the purpose that automatic control moves, the level of automation height.4, the water distributor of optimization design has greatly improved the water distribution effect, makes water distribution more even, reduces load impact, more helps absorption.5, this device has also solved the problem that backwash intensity causes that greatly charcoal runs off, and the height that filler does not run off required when making the device backwash reduces, and has simplified member and operation that operation condition and the switching of backwash operating mode relate to; So also possess advantages such as device volume is little, saving operation energy consumption, processing ease, convenient management.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the structural representation of the three-way control valve that adopts in the utility model.
Fig. 4 is the B-B view of Fig. 3.
Fig. 5 is the C-C view of Fig. 4.
Fig. 6 is the schematic cross-section of the utility model water distributor.
Fig. 7 is the upward view of the part-structure of water distributor among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments structure of the present utility model is described in further detail.
During concrete enforcement, the utility model structure such as Fig. 1 are to shown in Figure 7, and a kind of appliance for treating drinking water comprises an accommodating body 1, and accommodating body 1 upper end is connected with water inlet pipe 2; Accommodating body 1 inner chamber upper end is horizontally arranged with the water distributor that is connected with water inlet pipe 2; Be disposed with one-level adsorption structure and secondary absorption structure downwards in accommodating body 1 inner chamber of water distributor below; The one-level adsorption structure comprises the first recoil filler interception net 3, nonpolar adsorption stuffing layer 4, the first filler support screen cloth 5, the first filler supporting plate 6 that from top to bottom sets gradually; Described secondary absorption structure comprises the second recoil filler interception net 7, polar adsorption packing layer 8, the second filler support screen cloth 9, the second filler supporting plate 10 that from top to bottom sets gradually; The accommodating body bottom of secondary absorption structure below is provided with rising pipe 11; Also include the backwash system.
During enforcement, the filler in the described nonpolar adsorption stuffing layer 4 adopts nonpolar activated carbon granule, specifically can adopt the common activated carbon granule that can buy on the market; Filler in the described polar adsorption packing layer 8 adopts the polarity activated carbon granule, specifically can adopt the absorption polarity HAAs molecule performance that to buy activated carbon granule preferably, for example can adopt absorption polarity HAAs molecule performance than the good 2-5 of common gac doubly, Japan Enviro Chemicals, " Shirasagi WH2c " granular carbon that Ltd produces.
During enforcement, described backwash system comprises by a three-way control valve 15 and is connected backwash rising pipe 12 on the water inlet pipe 2, be connected backwash water inlet pipe 13 on the rising pipe 11 by another three-way control valve 15, also be provided with backwash water pump 14 on the backwash water inlet pipe 13.Wherein said three-way control valve comprises a valve body 16, valve body 16 inside have a spheric valve pocket, valve body 16 has three Link Ports that are positioned on the same diameter circle side face of ball-type valve pocket, be provided with to coupling ball crown type end socket 17 in valve body 16 valve pockets, ball crown type end socket 17 is connected with a rotation connecting rod 19 by strengthening gusset 18, the two ends of rotation connecting rod 19 rotatably are arranged at valve cavity wall, it is outside and be provided with handle 20 that the one end stretches out valve pocket, rotates rotation connecting rods 19 by handle 20 and can make ball crown type end socket 17 block that any makes two other conducting in three Link Ports.Described reinforcement gusset 18 is positioned at the diameter circle side face at three Link Port places.Described backwash system also comprises one second backwash rising pipe 21, described one-level adsorption structure and secondary absorption spacing structure are provided with, the described second backwash rising pipe 21 is on accommodating body 1 sidewall between one-level adsorption structure and the secondary absorption structure, and the second backwash rising pipe 21 is provided with outlet water control valve 22.
During enforcement, also comprise automatic control system, automatic control system comprises electronic management system 23 and is arranged at the level sensor electrode 26 between the water distributor and one-level adsorption structure in the accommodating body 1 that level sensor electrode 26 links to each other with electronic management system 23; The other end of rotation connecting rod stretches out the valve pocket outside and is provided with motor drive mechanism in the described three-way control valve 15, and motor drive mechanism links to each other with electronic management system 23; Outlet water control valve 22 on the described second backwash rising pipe 21 is the motor-operated control valve that links to each other with electronic management system 23; Described backwash water pump 14 links to each other with electronic management system 23.
During enforcement, described accommodating body 1 cross section is circular, described water distributor is straight water distributor 24, water distributor 24 is provided with water distributing pore 25, water distributor 24 is positioned at accommodating body 1 inner wall section circular diameter position, described water distributing pore 25 evenly replaces into 90 ° of layouts along both sides, water distributor 24 below, described water distributor 24 diameters reduce gradually along entrance end to end, greater than interlude, described water distributing pore 25 arrangement pitches interludes are less than inlet section and latter end (not demonstrating in the structure accompanying drawing of water distributing pore arrangement pitches and size) greater than latter end in water distributing pore 25 apertures of described water distributor 24 inlet sections.
During enforcement, openable non-tight cover plate (not showing in the accompanying drawing) can also be set at described accommodating body top.
Claims (9)
1. an appliance for treating drinking water is characterized in that, comprises an accommodating body (1), and accommodating body (1) upper end is connected with water inlet pipe (2); Accommodating body (1) inner chamber upper end is horizontally arranged with the water distributor that is connected with water inlet pipe (2); Be disposed with one-level adsorption structure and secondary absorption structure downwards in accommodating body (1) inner chamber of water distributor below; The one-level adsorption structure comprises the first recoil filler interception net (3), nonpolar adsorption stuffing layer (4), the first filler support screen cloth (5), the first filler supporting plate (6) that from top to bottom sets gradually; Described secondary absorption structure comprises the second recoil filler interception net (7), polar adsorption packing layer (8), the second filler support screen cloth (9), the second filler supporting plate (10) that from top to bottom sets gradually; The accommodating body bottom of secondary absorption structure below is provided with rising pipe (11); Also include the backwash system.
2. appliance for treating drinking water as claimed in claim 1 is characterized in that, the filler in the described nonpolar adsorption stuffing layer (4) adopts nonpolar activated carbon granule, and the filler in the described polar adsorption packing layer (8) adopts the polarity activated carbon granule.
3. appliance for treating drinking water as claimed in claim 1 or 2, it is characterized in that, described backwash system comprises by a three-way control valve (15) and is connected backwash rising pipe (12) on the water inlet pipe (2), be connected backwash water inlet pipe (13) on the rising pipe (11) by another three-way control valve (15), also be provided with backwash water pump (14) on the backwash water inlet pipe (13).
4. appliance for treating drinking water as claimed in claim 3, it is characterized in that, described three-way control valve (15) comprises a valve body (16), valve body (16) inside has a spheric valve pocket, valve body has three Link Ports that are positioned on the same diameter circle side face of ball-type valve pocket, be provided with to coupling ball crown type end socket (17) in the valve body valve pocket, ball crown type end socket (17) is connected with a rotation connecting rod (19) by strengthening gusset (18), the two ends of rotation connecting rod (19) rotatably are arranged at valve cavity wall, it is outside and be provided with handle (20) that the one end stretches out valve pocket, rotates rotation connecting rod (19) by handle (20) and can make ball crown type end socket (17) block that any makes two other conducting in three Link Ports.
5. appliance for treating drinking water as claimed in claim 4 is characterized in that, described reinforcement gusset (18) is positioned at the diameter circle side face at three Link Port places.
6. as claim 4 or 5 described appliance for treating drinking water, it is characterized in that, described backwash system also comprises one second backwash rising pipe (21), described one-level adsorption structure and secondary absorption spacing structure are provided with, the described second backwash rising pipe (21) is on accommodating body (1) sidewall between one-level adsorption structure and the secondary absorption structure, and the second backwash rising pipe (21) is provided with outlet water control valve (22).
7. appliance for treating drinking water as claimed in claim 6, it is characterized in that, also comprise automatic control system, automatic control system comprises electronic management system (23) and is arranged at level sensor electrode (26) between interior water distributor of accommodating body (1) and the one-level adsorption structure that level sensor electrode (26) links to each other with electronic management system (23); The other end that rotates connecting rod (19) in the described three-way control valve stretches out the valve pocket outside and is provided with motor drive mechanism, and motor drive mechanism links to each other with electronic management system (23); Outlet water control valve (22) on the described second backwash rising pipe (21) is the motor-operated control valve that links to each other with electronic management system (23); Described backwash water pump (14) links to each other with electronic management system (23).
8. appliance for treating drinking water as claimed in claim 1 or 2, it is characterized in that, described accommodating body (1) cross section is circular, described water distributor is straight water distributor (24), water distributor (24) is provided with water distributing pore (25), water distributor (24) is positioned at accommodating body inner wall section circular diameter position, described water distributing pore (25) evenly replaces into 90 ° of layouts along both sides, water distributor (24) below, described water distributor (24) diameter reduces gradually along entrance end to end, greater than interlude, described water distributing pore (25) arrangement pitches interlude is less than inlet section and latter end greater than latter end in water distributing pore (25) aperture of described water distributor (24) inlet section.
9. appliance for treating drinking water as claimed in claim 1 or 2 is characterized in that, described accommodating body (1) top is provided with openable non-tight cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205709168U CN201817341U (en) | 2010-10-21 | 2010-10-21 | Drinking water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205709168U CN201817341U (en) | 2010-10-21 | 2010-10-21 | Drinking water treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201817341U true CN201817341U (en) | 2011-05-04 |
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ID=43915304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205709168U Expired - Lifetime CN201817341U (en) | 2010-10-21 | 2010-10-21 | Drinking water treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201817341U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955273A (en) * | 2010-10-21 | 2011-01-26 | 重庆大学 | Device for removing haloacetic acids from drinking water |
| CN105979775A (en) * | 2013-12-03 | 2016-09-28 | 比奥费什斯有限公司 | Method and device for anesthetizing fish |
-
2010
- 2010-10-21 CN CN2010205709168U patent/CN201817341U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955273A (en) * | 2010-10-21 | 2011-01-26 | 重庆大学 | Device for removing haloacetic acids from drinking water |
| CN105979775A (en) * | 2013-12-03 | 2016-09-28 | 比奥费什斯有限公司 | Method and device for anesthetizing fish |
| US10287178B2 (en) | 2013-12-03 | 2019-05-14 | Biofishency Ltd. | Mechanical-biological filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110504 Effective date of abandoning: 20110921 |