CN110143729A - A kind of sewage treatment based on MBBR functional vector material proposes mark modernization system - Google Patents
A kind of sewage treatment based on MBBR functional vector material proposes mark modernization system Download PDFInfo
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- CN110143729A CN110143729A CN201910542963.7A CN201910542963A CN110143729A CN 110143729 A CN110143729 A CN 110143729A CN 201910542963 A CN201910542963 A CN 201910542963A CN 110143729 A CN110143729 A CN 110143729A
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- carrier
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- suspending carrier
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/107—Inorganic materials, e.g. sand, silicates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
- C02F3/108—Immobilising gels, polymers or the like
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention belongs to technical field of sewage more particularly to a kind of sewage treatment based on MBBR functional vector material to propose mark modernization system.The present invention carries the positive charge of varying strength by three kinds of MBBR functional vector materials, to be respectively used to attract anaerobic bacteria, anoxic bacteria and the aerobic bacteria of different numerical value negative electrical charges, again positively charged carrier screen drainage, retain carrier and reduce biomembrane attachment by way of, achieve the effect that on the carrier in tri- ponds AAO that biomembrane carries out specific aim sewage treatment.Present invention tool is specifically used for three kinds of different thallus there are three types of carrier, avoids competing between thallus, and advantage thallus attached biological film amount is big in different disposal pond, the charge attraction attachment advantage that efficacious prescriptions formula fruit is good and AAO method sewage index reducing effect is good.
Description
Technical field
The invention belongs at technical field of sewage more particularly to a kind of sewage based on MBBR functional vector material
Reason proposes mark modernization system.
Background technique
MBBR functional vector material is different from existing PE or PP material carrier, with large specific surface area and most
End form at the big advantage of biofilm biomass, the efficiency of microorganism treating sewage can be greatly improved.But on the other hand, existing
Functional vector material also increases specific surface area merely by the improvement of contour structures, can be from the 700- being used to
1000m2/m3Numerical value is increased to 2000 m2/m3Level, but this still cannot meet the dirt higher in this way of the quasi- IV class water of earth's surface
Water process requirement.
Patent publication No. is CN105129989A, and publication date is that the Chinese invention patent of 2015.12.09 discloses a kind of place
The MBBR process for managing municipal sewage, the steps include: to eliminate the suspended matter in sewage by the municipal sewage of coagulation
And partial organic substances, the anaerobic zone, aerobic zone and anoxic zone of MBBR system are then sequentially entered by intake pool, and by anoxic zone
Into secondary settling tank；The carrier surface to suspend in MBBR biological treatment system aerobic zone adheres to nitrobacteria, conducive to long sludge age
The growth of nitrifier, the activated sludge in each region can carry out degradation treatment to organic matter, and to the phosphorus in waste water at
Reason, to realize denitrogenation dephosphorizing simultaneously.
But that there are biofilm biomasses is smaller for the MBBR filler in the patent of invention, the problem of handling sewage low efficiency.
Summary of the invention
The object of the present invention is to provide a kind of sewage treatments based on MBBR functional vector material to propose mark modernization system,
The positive charge of varying strength can be carried, by three kinds of MBBR functional vector materials to be respectively used to attract different numerical value negative electrical charges
Anaerobic bacteria, anoxic bacteria and aerobic bacteria, then by positively charged carrier screen drainage, retain carrier and reduce biomembrane attachment
Mode, achieve the effect that on the carrier in tri- ponds AAO that biomembrane carries out specific aim sewage treatment.There are three types of carry for present invention tool
Body is specifically used for three kinds of different thallus, avoids competing between thallus, and advantage thallus attached biological film amount is big in different disposal pond, electricity
Lotus attracts the attachment advantage that efficacious prescriptions formula fruit is good and AAO method sewage index reducing effect is good.
The present invention solve the above problems the technical solution adopted is that: at a kind of sewage based on MBBR functional vector material
Reason proposes mark modernization system, successively includes filtering area, anaerobic zone, anoxic zone, aerobic zone, flocculation zone, settling zone and drainage area, institute
It states and is equipped with anaerobism suspending carrier in anaerobic zone, anoxic suspending carrier is equipped in the anoxic zone, is equipped in the aerobic zone aerobic
Suspending carrier is equipped with carrier screen on the outlet pipe of the anaerobic zone, anoxic zone and aerobic zone.
Further preferred technical solution is: the anaerobism suspending carrier, anoxic suspending carrier and aerobic suspension carry
Body includes matrix, and three for adjusting three kinds of carrier own charges kind charge ligand.
Further preferred technical solution is that described matrix includes following each component by weight: polyester polyurethane
72-75 parts, 12-13 parts of gelatin, 2-3 parts of chitosan, 0.5-1.5 parts of hollow glass bead, 1.2-1.8 parts of Nano-sized Alumina Powder,
5.8 parts of polyoxyethylene aliphatic alcohol ether, 0.5-2.0 parts of kaolin and 2-5 parts of crosslinking copolymerization object of acrylamide and acrylic acid salt.
Further preferred technical solution is: the charge ligand includes charge replenishers, electric charge dispersing agent and electricity
Lotus coating agent, the charge ligand after described matrix is fixed-type for carrying out submergence coating.
Further preferred technical solution is: the charge replenishers are one or both of lithium chloride or sodium chloride
Mixture, the electric charge dispersing agent are the ammonium persulfate aqueous solution of maleic anhydride modification, and the charge application agent is ethylene-vinegar
Sour ethylene copolymer.
Further preferred technical solution is: lithium chloride or weight sodium chloride account for itself and carry in the anaerobism suspending carrier
The 1.5-1.8% of body gross weight, lithium chloride or weight sodium chloride account for the 1.6- of self-vector gross weight in the anoxic suspending carrier
1.8%, lithium chloride or weight sodium chloride account for the 2.0-2.2% of self-vector gross weight in the aerobic suspending carrier.
Further preferred technical solution be the preparation method of three kinds of carriers successively the following steps are included:
S1, all raw materials that described matrix is mixed, extrusion molding obtain described matrix；
S2, three kinds of charge ligands are respectively mixed, obtain charge with body fluid；
S3, by weight it is that 4.5:2.5:3 divides after three heaps respectively with the charge of anaerobism suspending carrier with body fluid by described matrix, lacks
Charge of the charge of oxygen suspending carrier with body fluid and aerobic suspending carrier carries out coating operation with body fluid, is totally submerged stirring 1-
It is cooled and shaped at room temperature after 3min to get the final anaerobism suspending carrier, anoxic suspending carrier and aerobic suspension load
Body.
Further preferred technical solution is: the carrier screen includes strainer main body, and is coated in the strainer
Body surfaces and the positive charge layer for being used to repel the anaerobism suspending carrier, anoxic suspending carrier or aerobic suspending carrier.
Further preferred technical solution is: the positive charge layer includes adhesive agent gelatin and divalent calcium salt, described
The charge number of positive charge layer is greater than the aerobic suspending carrier.
Further preferred technical solution is: the microbial film for killing attachment is additionally provided in the strainer main body
Pulsed magnetic generator, for guaranteeing the drainage permeability of the strainer main body.
The present invention carries the positive charge of varying strength by three kinds of MBBR functional vector materials, to be respectively used to attract not
With the anaerobic bacteria of numerical value negative electrical charge, anoxic bacteria and aerobic bacteria, then by positively charged carrier screen drainage, retention carrier and subtract
The mode of few biomembrane attachment achievees the effect that biomembrane carries out specific aim sewage treatment on the carrier in tri- ponds AAO.This hair
Bright tool is specifically used for three kinds of different thallus there are three types of carrier, avoids competing between thallus, and advantage thallus adheres in different disposal pond
Biofilm biomass is big, the charge attraction attachment advantage that efficacious prescriptions formula fruit is good and AAO method sewage index reducing effect is good.
Detailed description of the invention
Fig. 1 is the flow chart that sewage treatment proposes mark modernization system in the present invention.
Specific embodiment
As described below is only presently preferred embodiments of the present invention, is not intended to limit the scope of the present invention.
Embodiment: as shown in Fig. 1, a kind of sewage treatment based on MBBR functional vector material proposes mark modernization system,
It successively include filtering area, anaerobic zone, anoxic zone, aerobic zone, flocculation zone, settling zone and drainage area, it is characterised in that: described to detest
It is equipped with anaerobism suspending carrier in oxygen area, anoxic suspending carrier is equipped in the anoxic zone, is equipped with aerobic suspension in the aerobic zone
Carrier is equipped with carrier screen on the outlet pipe of the anaerobic zone, anoxic zone and aerobic zone.
In the prior art, a set of carrier is only used in the anaerobic zone, anoxic zone and aerobic zone of AAO method, existing above carrier to detest
The biomembrane of oxygen bacterium, and have anoxic bacteria and aerobic bacteria, therefore there are problems that respective flora is vied each other, and biomembrane with
Sewage circulation, such as anaerobic bacteria biomembrane be exactly in aerobic zone aerobic flora competitor, substantially reduce sewage treatment
Effect, therefore in the present embodiment, by three kinds of carriers alone in denitrogenated in anaerobic zone, anoxic zone and aerobic zone, dephosphorization,
The operation dropped COD, drop ammonia nitrogen guarantees that there is enough surface areas to form biomembrane and without pass of vying each other for adhering on carrier
System, and the carrier screen can guarantee that the different carriers in not same district will not be mutually mixed, be finally reached the anaerobic zone,
It is pointedly put into anoxic zone and aerobic zone, using the effect of respective carrier, improves sewage treating efficiency.
The anaerobism suspending carrier, anoxic suspending carrier and aerobic suspending carrier include matrix, and for adjusting
Three kinds of charge ligands of three kinds of carrier own charges.Described matrix includes following each component by weight: polyester polyurethane
72-75 parts, 12-13 parts of gelatin, 2-3 parts of chitosan, 0.5-1.5 parts of hollow glass bead, 1.2-1.8 parts of Nano-sized Alumina Powder,
5.8 parts of polyoxyethylene aliphatic alcohol ether, 0.5-2.0 parts of kaolin and 2-5 parts of crosslinking copolymerization object of acrylamide and acrylic acid salt.
In the present embodiment, the carrier of polyurethane main material matter has the advantages that large specific surface area compared to PE and PP material,
The chitosan is used to improve the bioaffinity of the carrier, and the hollow glass bead and Nano-sized Alumina Powder are used for
Specific surface area is further increased, guarantees that the specific surface area of three kinds of carriers is 20000m2/m3More than, much higher than existing 2000 number
PE the or PP carrier of magnitude, and biofilm biomass is also in 20000-25000mg/L, therefore there is carrier itself just adhere to formation and give birth to
The good advantage of object film effect.
The charge ligand includes charge replenishers, electric charge dispersing agent and charge application agent, and the charge ligand is used for
Submergence coating is carried out after described matrix is fixed-type.The charge replenishers are one or both of lithium chloride or sodium chloride
Mixture, the electric charge dispersing agent are the ammonium persulfate aqueous solution of maleic anhydride modification, and the charge application agent is ethylene-vinegar
Sour ethylene copolymer.
It is known that microorganism no matter anaerobism, anoxic and aerobic, surface is all negatively charged, thus this
In embodiment, by three kinds of carriers by way of charge replenishers, more positive charge is introduced, for attracting respective microbial bacteria
Body, the final mode for improving attached biological film amount, and the persulfuric acid in the ammonium persulfate aqueous solution of maleic anhydride modification
Radical ion can disperse the distribution of charges of lithium or sodium ion on carrier, and more uniform distribution of charges mode can further increase
The convenient attachment of big thallus, and the ethylene-acetate ethylene copolymer is then used to be bonded coating.
Lithium chloride or weight sodium chloride account for the 1.5-1.8% of self-vector gross weight, the anoxic in the anaerobism suspending carrier
Lithium chloride or weight sodium chloride account for the 1.6-1.8% of self-vector gross weight, lithium chloride in the aerobic suspending carrier in suspending carrier
Or weight sodium chloride accounts for the 2.0-2.2% of self-vector gross weight.
In the present embodiment, aerobic flora surface negative charge number is greater than the anaerobic bacteria flora anoxic flora, therefore
The lithium chloride or the sodium chloride content that positive charge is used to form in the aerobic suspending carrier are relatively more, for being directed to
Property ground charge attraction aerobic bacteria.
The preparation method of three kinds of carriers successively the following steps are included:
S1, all raw materials that described matrix is mixed, extrusion molding obtain described matrix；
S2, three kinds of charge ligands are respectively mixed, obtain charge with body fluid；
S3, by weight it is that 4.5:2.5:3 divides after three heaps respectively with the charge of anaerobism suspending carrier with body fluid by described matrix, lacks
Charge of the charge of oxygen suspending carrier with body fluid and aerobic suspending carrier carries out coating operation with body fluid, is totally submerged stirring 1-
It is cooled and shaped at room temperature after 3min to get the final anaerobism suspending carrier, anoxic suspending carrier and aerobic suspension load
Body.
In the present embodiment, anaerobic zone is used to be used to remove TN except TP, anoxic zone, and aerobic zone is used to remove COD and ammonia nitrogen, and
And according to actual sewage characteristic, except the required biomass of TP and TN is bigger, therefore the anaerobism suspending carrier and anoxic suspend
The corresponding total accounting of matrix weight of carrier is 70%, and final three kinds of carriers respectively contain identical described matrix, and corresponding respective
The specific charge ligand of flora, and the carrier in AAO method in three ponds by strainer retain, will not intercommunication, finally make anaerobism,
Anoxic and aerobic three step are independent, efficiently carry out, and the sewage that guarantees that treated meets the requirement of the quasi- IV class water of earth's surface.
The carrier screen includes strainer main body, and coated in the strainer body surfaces and for repelling the anaerobism
The positive charge layer of suspending carrier, anoxic suspending carrier or aerobic suspending carrier.The positive charge layer include adhesive agent gelatin and
The charge number of divalent calcium salt, the positive charge layer is greater than the aerobic suspending carrier.It is additionally provided in the strainer main body for killing
The pulsed magnetic generator of the microbial film extremely adhered to, for guaranteeing the drainage permeability of the strainer main body.
In the present embodiment, the carrier screen needs to meet the following:
First, guarantee that sewage is smooth and passes through；
Second, avoid carrier from reuniting on it；
Third reduces the unnecessary microbial film that microbial flora is formed on poor processing effect.
Therefore in the present embodiment, the positive charge layer makes the strainer main body as three kinds of carriers, same to have
There is positive charge, therefore carrier can preferably be avoided to reunite in the strainer main body, meets above-mentioned Article 2, but this is allowed for
Flora equally can adhere to form poor processing effect in strainer main body, and be not easy to the strainer biomembrane that sewage passes through, therefore this
The pulsed magnetic field for passing through the pulsed magnetic generator in embodiment, the biomembrane " under shake " on strainer is removed, to guarantee dirt
Water big flow passes through, to meet above-mentioned first, Article 3.
Secondly, three carrier screens surround the drainpipe of the anaerobic zone, anoxic zone and aerobic zone respectively, so that
The carrier for adhering to specific flora only carries out anaerobism, anoxic or Aerobic Process for Treatment in the pond in respective area, guarantees that three kinds of carriers do not mix,
It does not influence each other, the final high efficiency for improving sewage treatment reduction indices.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula within the scope of knowledge possessed by those of ordinary skill in the art can also be before not departing from present inventive concept
It puts and makes various modifications.These be all without creative modification, as long as in scope of the presently claimed invention all by
To the protection of Patent Law.
Claims (10)
1. a kind of sewage treatment based on MBBR functional vector material proposes mark modernization system, successively include filtering area, anaerobic zone,
Anoxic zone, aerobic zone, flocculation zone, settling zone and drainage area, it is characterised in that: be equipped with anaerobism suspension in the anaerobic zone and carry
Body, is equipped with anoxic suspending carrier in the anoxic zone, equipped with aerobic suspending carrier, the anaerobic zone, anoxic in the aerobic zone
Carrier screen is equipped on the outlet pipe of area and aerobic zone.
2. a kind of sewage treatment based on MBBR functional vector material according to claim 1 proposes mark modernization system,
Be characterized in that: the anaerobism suspending carrier, anoxic suspending carrier and aerobic suspending carrier include matrix, and for adjusting
Three kinds of charge ligands of three kinds of carrier own charges.
3. a kind of sewage treatment based on MBBR functional vector material according to claim 2 proposes mark modernization system,
Be characterized in that described matrix includes following each component by weight: 72-75 parts of polyester polyurethane, 12-13 parts of gelatin, shell are poly-
2-3 parts sugared, 0.5-1.5 parts of hollow glass bead, 1.2-1.8 parts of Nano-sized Alumina Powder, 5.8 parts of polyoxyethylene aliphatic alcohol ether, height
Soil 0.5-2.0 parts of ridge and 2-5 parts of crosslinking copolymerization object of acrylamide and acrylic acid salt.
4. a kind of sewage treatment based on MBBR functional vector material according to claim 2 proposes mark modernization system,
Be characterized in that: the charge ligand includes charge replenishers, electric charge dispersing agent and charge application agent, and the charge ligand is used for
Submergence coating is carried out after described matrix is fixed-type.
5. a kind of sewage treatment based on MBBR functional vector material according to claim 4 proposes mark modernization system,
Be characterized in that: the charge replenishers are one or both of lithium chloride or sodium chloride mixture, and the electric charge dispersing agent is
The ammonium persulfate aqueous solution of maleic anhydride modification, the charge application agent are ethylene-acetate ethylene copolymer.
6. a kind of sewage treatment based on MBBR functional vector material according to claim 5 proposes mark modernization system,
Be characterized in that: lithium chloride or weight sodium chloride account for the 1.5-1.8% of self-vector gross weight in the anaerobism suspending carrier, described to lack
Lithium chloride or weight sodium chloride account for the 1.6-1.8% of self-vector gross weight, chlorination in the aerobic suspending carrier in oxygen suspending carrier
Lithium or weight sodium chloride account for the 2.0-2.2% of self-vector gross weight.
7. a kind of sewage treatment based on MBBR functional vector material according to claim 4 proposes mark modernization system,
Be characterized in that the preparation method of three kinds of carriers successively the following steps are included:
S1, all raw materials that described matrix is mixed, extrusion molding obtain described matrix；
S2, three kinds of charge ligands are respectively mixed, obtain charge with body fluid；
S3, by weight it is that 4.5:2.5:3 divides after three heaps respectively with the charge of anaerobism suspending carrier with body fluid by described matrix, lacks
Charge of the charge of oxygen suspending carrier with body fluid and aerobic suspending carrier carries out coating operation with body fluid, is totally submerged stirring 1-
It is cooled and shaped at room temperature after 3min to get the final anaerobism suspending carrier, anoxic suspending carrier and aerobic suspension load
Body.
8. a kind of sewage treatment based on MBBR functional vector material according to claim 1 proposes mark modernization system,
Be characterized in that: the carrier screen includes strainer main body, and described is detested coated in the strainer body surfaces and for repelling
The positive charge layer of oxygen suspending carrier, anoxic suspending carrier or aerobic suspending carrier.
9. a kind of sewage treatment based on MBBR functional vector material according to claim 8 proposes mark modernization system,
Be characterized in that: the positive charge layer includes adhesive agent gelatin and divalent calcium salt, and the charge number of the positive charge layer is greater than described
Aerobic suspending carrier.
10. a kind of sewage treatment based on MBBR functional vector material according to claim 8 proposes mark modernization system,
It is characterized in that: being additionally provided with the pulsed magnetic generator of the microbial film for killing attachment in the strainer main body, for protecting
Demonstrate,prove the drainage permeability of the strainer main body.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367371Y (en) * | 1998-10-28 | 2000-03-08 | 张文忠 | Water filtering-purifying device using pulse electric field to assist filter screen |
| CN102976478A (en) * | 2012-12-06 | 2013-03-20 | 江苏百纳环境工程有限公司 | Polyurethane carrier and preparation method thereof |
| CN105692870A (en) * | 2016-01-27 | 2016-06-22 | 苏州科环环保科技有限公司 | Biological filter packing with high adsorption intensity |
| US20190010068A1 (en) * | 2017-07-07 | 2019-01-10 | Katz Water Technologies, Inc | Pretreatment of produced water to facilitate improved metal extraction |
| CN208700836U (en) * | 2018-06-07 | 2019-04-05 | 广东省环境保护工程研究设计院有限公司 | A kind of sewage proposes mark modernization system |
-
2019
- 2019-06-21 CN CN201910542963.7A patent/CN110143729A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2367371Y (en) * | 1998-10-28 | 2000-03-08 | 张文忠 | Water filtering-purifying device using pulse electric field to assist filter screen |
| CN102976478A (en) * | 2012-12-06 | 2013-03-20 | 江苏百纳环境工程有限公司 | Polyurethane carrier and preparation method thereof |
| CN105692870A (en) * | 2016-01-27 | 2016-06-22 | 苏州科环环保科技有限公司 | Biological filter packing with high adsorption intensity |
| US20190010068A1 (en) * | 2017-07-07 | 2019-01-10 | Katz Water Technologies, Inc | Pretreatment of produced water to facilitate improved metal extraction |
| CN208700836U (en) * | 2018-06-07 | 2019-04-05 | 广东省环境保护工程研究设计院有限公司 | A kind of sewage proposes mark modernization system |
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