CN103627015A - Preparation method of hydrophilic polymer-modified polyurethane foaming plastic carrier - Google Patents
Preparation method of hydrophilic polymer-modified polyurethane foaming plastic carrier Download PDFInfo
- Publication number
- CN103627015A CN103627015A CN201210306198.7A CN201210306198A CN103627015A CN 103627015 A CN103627015 A CN 103627015A CN 201210306198 A CN201210306198 A CN 201210306198A CN 103627015 A CN103627015 A CN 103627015A
- Authority
- CN
- China
- Prior art keywords
- solution
- preparation
- foam
- polysuccinimide
- hydrophilic polymer
- 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
Images
Landscapes
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a preparation method of a hydrophilic polymer-modified polyurethane foaming plastic carrier. The preparation method comprises steps of: 1) cutting polyurethane flexible foam into pieces; 2) preparing an aqueous starch solution having a proper concentration, an aqueous sodium carboxymethylcellulose solution having a proper concentration, a N,N-dimethyl formamide solution of polybutanimide having a proper concentration; 3) dipping polyurethane foaming plastic into the aqueous starch solution, the aqueous sodium carboxymethylcellulose solution and the N,N-dimethyl formamide solution of the polybutanimide; and then transferring the polyurethane foaming plastic into an aqueous cross-linking agent solution and heating; and 4) taking the foaming plastic out, washing and drying. The preparation method is simple in technology and convenient in operation. A microbial carrier which has an advantage of cost performance and is used for sewage treatment can be obtained after modification.
Description
Technical field
The present invention relates to sewage treatment area, that be specifically related to is a kind of preparation method of hydrophilic polymer modified rigid polyurethane foam carrier.
Background technology
In sewage disposal, porous support filler can be used as attached growth of microorganisms carrier.Since 20 century 70s, scientific research personnel in sewage disposal with having done a large amount of research aspect the improvement of bio-carrier: from early stage research at fixed filler and granular hard filler, to the floating stuffing developing on the above two bases.Early 1990s, the floating stuffing that novel light can move freely is succeeded in developing, and has opened a new water treatment direction.Over nearly 10 years, suspended filler biofilm technique obtains swift and violent development, the figure that nearly all has floating stuffing in process field such as sanitary sewage, trade effluent, micro-Polluted Source Waters, can say in biologic process for treating sewage, introduce the application of bio-carrier material will be more and more extensive.Investigators have developed the floating stuffing of various materials, structure, shape, size, as inorganic carriers such as haydite, gacs, also have the plastic fillers such as polyethylene.External ripe plastics floating stuffing has the urethane of employing material, and wastewater treatment efficiency is better.Abroad in more ripe suspending carrier system, German LINDE company " the CAPTOR system filler material used that the LEVAPOR of LINPOR PROCESS ”,You Bayer A.G research and development improves technique and the exploitation of Britain Simon Hartley company for LINPOR is all urethane foam.
The deficiency existing at aspects such as wetting ability, bioaffinity and activity for use in waste water treatment urethane biofilm carrier,,
zhang Qixiadeng research preparation wide aperture reticulated polyurethane foam (
zhang Qixia,
xu Hao dragon,
wu Bin, the development of microbial immobilized reticulated polyurethane carrier,
engineering plastics application,
2007,35 (2): 41-44), patent ZL02141723.7 has developed gac compounded hydrophilic urethane foam microorganisms fixation support (Li Yanfeng, Zhou Lincheng, horse distance of travel of roc etc., gac compounded hydrophilic urethane foam microorganisms fixation support, China, ZL 02141723.7,2004).Current, the subject matter that floating stuffing exists is biofilm problem, and biofilm difficulty or biofilm are not firm.
Summary of the invention
The object of the invention is to overcome the above problem that prior art exists, a kind of preparation method of hydrophilic polymer modified rigid polyurethane foam carrier is provided, from filling surface and body two aspects, set about carrying out modification.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A preparation method for hydrophilic polymer modified rigid polyurethane foam carrier, comprises the following steps:
Step 1) cuts into piece by polyurethane foams by definite shape, cleans broken foam dried for standby in addition;
Step 2) according to the difference of processing hydrophilic polymer, the DMF solution of the amidin of preparation proper concn, sodium carboxymethyl cellulose solution, polysuccinimide;
Step 3) is immersed in described urethane foam 5-60min in the DMF solution of described amidin, sodium carboxymethyl cellulose solution, polysuccinimide, vacuumizes, and makes to be full of in plastic foam solution;
Step 4) moves to the urethane foam after described amidin, sodium carboxymethyl cellulose solution infiltrate in 0.01-1mol/L cross-linking agent aqueous solution, and sodium hydroxide solution pH regulator is 10, is heated to 60-90 ℃ of processing; Urethane foam after the DMF solution impregnation of described polysuccinimide moves to 1-10% sodium hydroxide solution, is heated to 60-90 ℃ of processing;
Step 5) is taken out porous plastics and is rinsed and makes surface present neutrality, extracts after the water in porous plastics dry for standby at 50 ℃-120 ℃.
Further, to cut into the length of side be 10-20mm rectangular parallelepiped to described polyurethane foams.
Further, described linking agent is epoxy chloropropane, polysuccinimide, glutaraldehyde, ethylene glycol diglycidylether, sodium polyphosphate.
The invention has the beneficial effects as follows:
Technique of the present invention is simple, easy to operate, obtains the sewage disposal microbe carrier with superiority of effectiveness after modification.Economic worth of the present invention is higher, utilize urethane foam to prepare sewage disposal floating stuffing, select cheap, suitable material to make starting material, efficient, the cheap functional floating stuffing of exploitation, the use of environmental friendly regenerated material, makes filler more meet the theory of environmental protection and resources circulation.
Accompanying drawing explanation
Fig. 1 is Experimental equipment of the present invention;
Fig. 2 is that immobilized microorganism of the present invention is to waste water COD degradation curve figure;
Fig. 3 is that immobilized microorganism of the present invention is to ammonia nitrogen in waste water degradation curve figure;
Fig. 4 is that immobilized microorganism of the present invention is to waste water TOC degradation curve figure;
Fig. 5 is that immobilized microorganism of the present invention is to waste water TN degradation curve figure.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the present invention in detail.
A preparation method for hydrophilic polymer modified rigid polyurethane foam carrier, comprises the following steps:
Step 1) cuts into piece by polyurethane foams by definite shape, cleans broken foam dried for standby in addition;
Step 2) according to the difference of processing hydrophilic polymer, the DMF solution of the amidin of preparation proper concn, sodium carboxymethyl cellulose solution, polysuccinimide;
Step 3) is immersed in described urethane foam 5-60min in the DMF solution of described amidin, sodium carboxymethyl cellulose solution, polysuccinimide, vacuumizes, and makes to be full of in plastic foam solution;
Step 4) moves to the urethane foam after described amidin, sodium carboxymethyl cellulose solution infiltrate in 0.01-1mol/L cross-linking agent aqueous solution, and sodium hydroxide solution pH regulator is 10, is heated to 60-90 ℃ of processing; Urethane foam after the DMF solution impregnation of described polysuccinimide moves to 1-10% sodium hydroxide solution, is heated to 60-90 ℃ of processing;
Step 5) is taken out porous plastics and is rinsed and makes surface present neutrality, extracts after the water in porous plastics dry for standby at 50 ℃-120 ℃.
Further, described polyurethane foams is mainly the scrap stock such as furniture, back cushion, mattress, clothes, shoes and hats lining, packing, and density is 10-30kg/m
3polyether(poly)urethane.
Further, described hydrophilic polymer mainly contains starch, Xylo-Mucine, polysuccinimide etc., has the polymkeric substance of the hydrophilic radicals such as hydroxyl, carboxyl, amino on long-chain.
Further, described linking agent mainly contains epoxy chloropropane, polysuccinimide, glutaraldehyde, ethylene glycol diglycidylether, sodium polyphosphate etc.
Further, described polyurethane-modified carrier can be used as microbial fixed carrier.
Further, described polyurethane foams is according to existing bio-carrier stock size, and cutting into the length of side is 10-20mm rectangular parallelepiped.
Embodiment 1:
The enforcement of starch conversion urethane foam
Polyurethane foams is cut into 10mm * 10mm * 10mm small cubes, clean broken foam dried for standby in addition;
Take the starch solution that 1g water soluble starch and 99g water are mixed with 1% weight percent.Get urethane foam and immerse in the starch solution just prepared, vacuumize, make to be full of in plastic foam solution.Taking out porous plastics is immersed in respectively in the cross-linking agent aqueous solution of 0.01mol/L, 0.1mol/L, 1mol/L, with sodium hydroxide solution, regulate PH=10, react 4h in 75 ℃ of waters bath with thermostatic control after, take out, water embathes to neutrality, extracts after the water in foam and at 80 ℃, dries in thermostatic drying chamber.
Parameter after table 1 starch is cross-linking modified to urethane foam changes.
Table 1 is through the variation of the cross-linking modified front and back of starch urethane foam parameter
| ? | 0.01mol/L linking agent and starch | 0.1mol/L linking agent and starch | 1mol/L linking agent and starch | Blank |
| Apparent density/kg/m 3 | 30 | 30 | 30 | 30 |
| Aperture/mm | 1.2 | 1.2 | 1.4 | 1.0 |
| Porosity/% | 94.3 | 94.3 | 98.0 | 83.0 |
| Water holding multiplying power | 31.5 | 31.5 | 32.7 | 24.0 |
| Intensity | Qualified | Qualified | Qualified | Qualified |
As can be seen from the above table, the apparent density of the polyurethane foam after starch conversion should increase, yet urethane, in the alkaline aqueous solution, alkaline hydrolysis has occurred, i.e. polyurethane structural unit R-NH-C=O-R
1in amido linkage be rupture under the condition that can exist at high temperature or alkali, so polyurethane foam has small part that degraded has occurred, and the quality reducing and the quality of increase be more or less the same, just there is not significantly variation in apparent density.And along with the increase of degree of crosslinking, in polyurethane foam, the number of hydroxyl constantly increases, and because of the hydrogen bond association of group, after modification, material has better wetting ability again.And aperture, porosity and water holding multiplying power are positively related.
In sum, the result after the linking agent of 1mol/L, 1% starch and polyurethane foam are cross-linking modified is ideal, and aperture reaches 1.4, and porosity reaches 98.0%, and water holding multiplying power reaches 32.7 times.Polyurethane foam properties after starch conversion all increases, and the polyurethane foam aperture after the modification of 1mol/L linking agent reaches 1.4mm, and porosity reaches 98.0%, and water holding multiplying power reaches 32 times, and microorganism colonization rate reaches 22%.Because starch is very stable natural polymer, and cheap, so starch conversion urethane foam is applicable to suitability for industrialized production application.
Embodiment 2:
The enforcement of Xylo-Mucine modified rigid polyurethane foam
Polyurethane foam is cut into 10mm * 10mm * 10mm small cubes, clean broken foam dried for standby in addition.
Take the starch solution that 1g Xylo-Mucine and 99g water are mixed with 1% weight percent.Get urethane foam and immerse in the carboxymethylcellulose sodium solution just prepared, vacuumize, make to be full of in plastic foam solution.Take out porous plastics and be immersed in respectively in the cross-linking agent aqueous solution of 0.01mol/L, 0.1mol/L, 1mol/L, with sodium hydroxide solution, regulate PH=10.React 4h in 75 ℃ of waters bath with thermostatic control after, take out, water embathes to neutrality, extracts after the water in foam and at 80 ℃, dries in thermostatic drying chamber.
Table 2 is that the parameter of Xylo-Mucine after to urethane foam modification changes.
The variation of table 2 urethane foam parameter before and after Xylo-Mucine modification
| ? | 0.01mol/L linking agent and Xylo-Mucine | 0.1mol/L linking agent and Xylo-Mucine | 1mol/L linking agent and Xylo-Mucine | Blank |
| Apparent density/kg/m 3 | 29 | 29 | 29 | 30 |
| Aperture/mm | 1.4 | 1.2 | 1.3 | 1.0 |
| Porosity/% | 97.6 | 90.3 | 95.7 | 83.0 |
| Water holding multiplying power | 32.3 | 28.6 | 30.7 | 24.0 |
| Intensity | Qualified | Qualified | Qualified | Qualified |
Due in structure with the similarity of starch, so the performance after modification is similar to starch, but show in data, not as the variation of starch conversion regular.Best results be minimum one group of degree of crosslinking, the polyurethane foam after the epoxy chloropropane solution crosslinking modification of 1% carboxymethylcellulose sodium solution and 0.01mol ∕ L, its aperture is 1.4mm, porosity reaches 97%, water holding multiplying power reaches 32 times, biofilm rate reaches 18%.Its cost is compared with starch, is not so good as starch inexpensive.
Embodiment 3:
The enforcement of polysuccinimide modified rigid polyurethane foam
Polyurethane foam is cut into 10mm * 10mm * 10mm small cubes, clean broken foam dried for standby in addition.
12.5gDL-aspartic acid is placed in to 250ml round-bottomed flask, adds 6.5g85% phosphoric acid, fully mix, 180 ℃ of Depressor responses 5 ~ 30 minutes, add 50ml DMF while hot, after product dissolves, join in 300ml water, filter out precipitation, through being washed to neutrality, products therefrom is dissolved in 50ml DMF, reprecipitation, twice, 100 ℃ of vacuum-drying, makes polysuccinimide product repeatedly.
The polysuccinimide of certain mass is poured in DMF solvent and is mixed with solution, immerse urethane foam.According to urethane unit, than polysuccinimide unit mol ratio, should be respectively the DMF solution of 5:1,10:1 and 15:1 preparation polysuccinimide, thereby modification goes out the control group of different proportionings.8% sodium hydroxide solution is heated to 90 ° of C, adds and soak sufficient foam, after stir process, take out foam, with ethanol water logging, be washed till neutrality, extract foam and at 80 ℃, dry in thermostatic drying chamber.
Table 3 is that the parameter of polysuccinimide after to polyurethane foam modification changes.
The variation of urethane foam parameter before and after the modification of table 3 polysuccinimide
| ? | 5:1 | 10:1 | 15:1 | Blank |
| Apparent density/kg/m 3 | 30.0 | 31.0 | 31.0 | 30 |
| Aperture/mm | 1.5 | 1.3 | 1.2 | 1 |
| Porosity/% | 81.7 | 96.5 | 89.4 | 83.0 |
| Water holding multiplying power | 28.3 | 29.5 | 28.9 | 24.0 |
| Intensity | Qualified | Qualified | Qualified | Qualified |
As can be seen from Table 3, after modification, polyurethane foam apparent density all has increase, this be because grafting the result of polysuccinimide; All there is increase in aperture, because there is the step of alkaline hydrolysis in modifying process; The porosity of urethane foam and water holding multiplying power have had larger variation before and after modification, when urethane unit and polysuccinimide unit mol ratio are 10:1, foam is carried out to modification porosity and water holding multiplying power to be improved the most remarkable, this is mainly because chemical modification has increased the number of functional groups such as the carboxyl on carrier, carbonyl, these groups are with between water molecules, hydrogen bond association occurring, thereby have improved the wetting ability of carrier.
Polysuccinimide modified polyurethane foam, designing respectively urethane unit and polysuccinimide unit mol ratio is that 5:1,10:1 and 15:1 test, filter out when urethane unit and polysuccinimide unit mol ratio are 10:1, modified effect is best, polyurethane foam porosity is 96.5%, and water holding multiplying power is 29.5.Finally optimize optimum handling scheme: urethane unit and polysuccinimide unit mol ratio are 10:1.
Application Example:
Blank urethane foam, preferred polysuccinimide modified polyurethane foam (mol ratio is 10:1) are placed in to self-control BAF simulator, the microorganism colonization situation of comparison vehicle, the treatment effect to simulation high ammonia-nitrogen wastewater.BAF major portion is only a glass column, only needs vexed exposing to the sun, without continuous operation during biofilm; Because on-fluent during biofilm, microorganism is easily fixing, is difficult for running off, therefore adopt BAF.
Bio-film colonization experiment and water treatment effect experimental selection in BAF simulator (Fig. 1) are carried out, and comprise water-in, pond, aerator, water outlet; Between the entery and delivery port in pond, be provided with the functional urethane foam carrier that can be used for fixation of microbe, carrier is fixed with net, in the bottom of carrier, is provided with aerator.Simulation aeration and biological filter post aeration filter post effective volume is 4.03L, and height is 1230mm, and internal diameter is 70mm, and filter post material is synthetic glass, and water inlet air inlet is by two designed mouths of pipe of bottom, and middle portion is filled carrier, and carrier filling ratio is 40%.One of inflator (being equipped with variable-voltage transformer to regulate aeration rate), one of digital display constant flow pump is to control flooding velocity.
Former water is for simulation high-concentration ammonia nitrogenous wastewater, formulated by glucose, ammonium chloride, potassium primary phosphate, calcium chloride, Repone K, sodium-chlor, magnesium sulfate and ferric chloride hexahydrate.The waste water COD of preparing is 1200.0mg/L left and right, and ammonia nitrogen is 460mg/L left and right, and TOC is 333.8 mg/L left and right, and TN is 601.7 mg/L left and right.
Filter post adopts thalline B350 inoculation method biofilm, filter post run duration hydraulic detention time 24h, and flow 0.17L/h, continues aeration, and aeration rate is sufficient.First vexed exposing to the sun three days, then adjust flux metering rotating speed is that 2.03r/min continues water inlet, detects effluent index every day.
Carrier after biofilm is embathed to 30min 60-80 ℃ of water-bath, then will be soaked with solution ultrasonic 5min under low frequency of carrier.The solution of the membrane filtration that uses 0.45 μ m after ultrasonic, dries to constant weight the filter membrane after filtering, and controlling temperature is 105 ℃, and about 30min of time weighs the weight of filter membrane after drying, and deducts the weight of filtering front filter and is the biofilm biomass peeling off.
COD and clearance contrast
Shown in Fig. 2, in the process of degraded manual simulation waste water, unmodified group and modification group can obtain good effect, after unmodified group of biofilm maturation, COD clearance are reached to 90.40%, this is mainly that porosity is also very large because polyurethane foam just had reticulated structure originally.And after carrier biofilm maturation, to COD clearance, can reach 92.03% after modification, a little more than unmodified group.
Ammonia nitrogen and clearance contrast
Shown in Fig. 3, in the process of degraded manual simulation waste water, modification group obviously will be higher than unmodified group to the clearance of ammonia nitrogen, is 83.36%, and to ammonia nitrogen removal frank, is 70.15% after unmodified group of biofilm maturation after modification group biofilm maturation to ammonia nitrogen removal frank.After this explanation modification, carrier is applicable to denitrifier growth more, is also that bioaffinity is stronger.Very unstable at the first 4 days clearances for ammonia nitrogen of biofilm, the removal situation analysis of contact to COD, is denitrifier and aerobic autotrophic bacteria competition existence stage, so each index of water outlet is during this period of time very unstable during this period of time; And along with the increase of cultivated days, microbial film thickening, in microbial film, biologic chain increases, and various bacteriums start stable growth, so each index clearance is settled out gradually.
TOC and clearance contrast
Shown in Fig. 4, in the process of degraded manual simulation waste water, modification group will be higher than unmodified group to the clearance of TOC, is 71.36%, and to TOC clearance, is 67.94% after unmodified group of biofilm maturation after modification group biofilm maturation to TOC clearance.
TN and clearance contrast
Shown in Fig. 5, in the process of degraded manual simulation waste water, modification group will be higher than unmodified group to the clearance of TN, is 54.47%, and to TN clearance, is 49.29% after unmodified group of biofilm maturation after modification group biofilm maturation to TN clearance.
When urethane unit and polysuccinimide unit mol ratio are 10:1, foam is carried out to modification after polyurethane foam carrier hydrophilicity good, by the urethane foam after modification for carrier immobilized microorganism.Test modification after biofilm maturation after, carrier biofilm amount is 279.35mg/g, and biofilm after carrier biofilm maturation before modification is measured, is decided to be 90.78mg/g, illustrates that the one's own physical property of carrier obviously increases after modification.Degradation curve for each index of sewage shows, installs after operation two weeks, and comparative group is unmodified polyurethane foam, and COD clearance is reached to 92.03%, and ammonia nitrogen removal frank is reached to 83.36%, and TOC clearance is reached to 71.36%, and TN clearance is reached to 54.47%.
Claims (3)
1. a preparation method for hydrophilic polymer modified rigid polyurethane foam carrier, is characterized in that, comprises the following steps:
Step 1) cuts into piece by polyurethane foams by definite shape, cleans broken foam dried for standby in addition;
Step 2) according to the difference of processing hydrophilic polymer, the DMF solution of the amidin of preparation proper concn, sodium carboxymethyl cellulose solution, polysuccinimide;
Step 3) is immersed in described urethane foam 5-60min in the DMF solution of described amidin, sodium carboxymethyl cellulose solution, polysuccinimide, vacuumizes, and makes to be full of in plastic foam solution;
Step 4) moves to the urethane foam after described amidin, sodium carboxymethyl cellulose solution infiltrate in 0.01-1mol/L cross-linking agent aqueous solution, and sodium hydroxide solution pH regulator is 10, is heated to 60-90 ℃ of processing; Urethane foam after the DMF solution impregnation of described polysuccinimide moves to 1-10% sodium hydroxide solution, is heated to 60-90 ℃ of processing;
Step 5) is taken out porous plastics and is rinsed and makes surface present neutrality, extracts after the water in porous plastics dry for standby at 50 ℃-120 ℃.
2. the preparation method of hydrophilic polymer modified rigid polyurethane foam carrier according to claim 1, is characterized in that: it is 10-20mm rectangular parallelepiped that described polyurethane foams cuts into the length of side.
3. the preparation method of hydrophilic polymer modified rigid polyurethane foam carrier according to claim 1, is characterized in that: described linking agent is epoxy chloropropane, polysuccinimide, glutaraldehyde, ethylene glycol diglycidylether, sodium polyphosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210306198.7A CN103627015B (en) | 2012-08-27 | 2012-08-27 | The preparation method of a kind of hydrophilic polymer modified urethane foam carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210306198.7A CN103627015B (en) | 2012-08-27 | 2012-08-27 | The preparation method of a kind of hydrophilic polymer modified urethane foam carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103627015A true CN103627015A (en) | 2014-03-12 |
| CN103627015B CN103627015B (en) | 2016-06-08 |
Family
ID=50208483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210306198.7A Active CN103627015B (en) | 2012-08-27 | 2012-08-27 | The preparation method of a kind of hydrophilic polymer modified urethane foam carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103627015B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017793A (en) * | 2017-11-27 | 2018-05-11 | 兰州大学白银产业技术研究院 | A kind of application being sustained in the preparation method and its chemical wastewater treatment of polyurethane mesh carrier |
| CN108017227A (en) * | 2017-11-13 | 2018-05-11 | 国家***竹子研究开发中心 | A kind of charcoal filtration system and its method for operation for high-nitrogen waste water processing |
| CN108083554A (en) * | 2017-11-27 | 2018-05-29 | 兰州大学白银产业技术研究院 | The method that heterogeneous Fenton co-immobilization microorganism reactor handles chemical pharmacy organic wastewater |
| CN109354165A (en) * | 2018-12-03 | 2019-02-19 | 巩义市宏盛稀有金属有限公司 | A method of using hybrid biosystem integrated treatment sanitary sewage |
| CN109776852A (en) * | 2018-08-24 | 2019-05-21 | 罗仕新 | Composite sponge and its preparation process |
| CN109970182A (en) * | 2019-03-21 | 2019-07-05 | 华北电力大学 | A kind of composite filling for immobilized microorganism technique |
| CN110724304A (en) * | 2019-12-02 | 2020-01-24 | 沈阳环境科学研究院 | Modified polyurethane sponge biological filler and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587106A (en) * | 2004-07-02 | 2005-03-02 | 北京大学 | Polyurethane base biological fixing carrier and sewage treating method |
| JP2010017659A (en) * | 2008-07-10 | 2010-01-28 | Inoac Corp | Polyurethane foam to be used as carrier for water treatment |
| CN101735475A (en) * | 2009-12-10 | 2010-06-16 | 清华大学 | Preparation method of hydrophilic polyurethane porous support |
-
2012
- 2012-08-27 CN CN201210306198.7A patent/CN103627015B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587106A (en) * | 2004-07-02 | 2005-03-02 | 北京大学 | Polyurethane base biological fixing carrier and sewage treating method |
| JP2010017659A (en) * | 2008-07-10 | 2010-01-28 | Inoac Corp | Polyurethane foam to be used as carrier for water treatment |
| CN101735475A (en) * | 2009-12-10 | 2010-06-16 | 清华大学 | Preparation method of hydrophilic polyurethane porous support |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017227A (en) * | 2017-11-13 | 2018-05-11 | 国家***竹子研究开发中心 | A kind of charcoal filtration system and its method for operation for high-nitrogen waste water processing |
| CN108017227B (en) * | 2017-11-13 | 2020-05-22 | 国家***竹子研究开发中心 | Biochar filtering system for high-nitrogen wastewater treatment and operation mode thereof |
| CN108017793A (en) * | 2017-11-27 | 2018-05-11 | 兰州大学白银产业技术研究院 | A kind of application being sustained in the preparation method and its chemical wastewater treatment of polyurethane mesh carrier |
| CN108083554A (en) * | 2017-11-27 | 2018-05-29 | 兰州大学白银产业技术研究院 | The method that heterogeneous Fenton co-immobilization microorganism reactor handles chemical pharmacy organic wastewater |
| CN108017793B (en) * | 2017-11-27 | 2021-03-30 | 兰州大学白银产业技术研究院 | Preparation method of slow-release polyurethane reticular carrier and application of slow-release polyurethane reticular carrier in chemical wastewater treatment |
| CN109776852A (en) * | 2018-08-24 | 2019-05-21 | 罗仕新 | Composite sponge and its preparation process |
| CN109776852B (en) * | 2018-08-24 | 2021-10-29 | 罗仕新 | Composite sponge and preparation process thereof |
| CN109354165A (en) * | 2018-12-03 | 2019-02-19 | 巩义市宏盛稀有金属有限公司 | A method of using hybrid biosystem integrated treatment sanitary sewage |
| CN109354165B (en) * | 2018-12-03 | 2021-08-27 | 河北雄安迈嵘环保科技有限公司 | Method for integrally treating domestic sewage by adopting composite MBR (membrane bioreactor) |
| CN109970182A (en) * | 2019-03-21 | 2019-07-05 | 华北电力大学 | A kind of composite filling for immobilized microorganism technique |
| CN110724304A (en) * | 2019-12-02 | 2020-01-24 | 沈阳环境科学研究院 | Modified polyurethane sponge biological filler and preparation method thereof |
| CN110724304B (en) * | 2019-12-02 | 2021-10-01 | 沈阳环境科学研究院 | Modified polyurethane sponge biological filler and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103627015B (en) | 2016-06-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103627015B (en) | The preparation method of a kind of hydrophilic polymer modified urethane foam carrier | |
| CN109293138A (en) | A kind of aquaculture wastewater purifying treatment method | |
| CN203144169U (en) | Porous rotary suspension ball padding | |
| CN103351062B (en) | Magnetic microbial carrier | |
| CN106277582A (en) | A kind of utilize microalgae method of denitrogenation dephosphorizing in aquaculture wastewater | |
| CN102745804B (en) | Membrane biological treatment method for enhanced nitrogen removal | |
| CN105417689A (en) | Method for accelerating aerobic sludge granulation by aid of charcoal | |
| CN101514047A (en) | Compound biological membrane sewage treatment process | |
| CN104176833A (en) | Preparation method of magnetic microbial carrier | |
| CN104961289A (en) | Micro-nano aeration high-efficiency biotreatment technical system for livestock and poultry breeding wastewater | |
| CN112158945A (en) | Preparation and strengthening method of biological filter filler for industrial wastewater treatment | |
| CN101913698A (en) | Preparation method of attapulgite/PVA (Polyvinyl Alcohol) compound suspended porous microbial carrier | |
| CN104419699A (en) | Biological product containing aerobe combined bacteria and preparation method and application thereof | |
| CN106430572A (en) | Method and device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles | |
| CN203256023U (en) | Tail water deep processing aeration-type ecological floating island with bamboo filament filler substrate | |
| CN101343111A (en) | Method for improving attached growth wastewater treatment biomembrane reactor efficiency | |
| CN108083452B (en) | Heterotrophic and sulfur autotrophic integrated solid-phase denitrification system for treating high-nitrate water body | |
| CN112960766B (en) | Aerobic biomembrane material, preparation method and application thereof in sewage treatment technology | |
| CN107487860B (en) | A kind of fish-farming with sewage microalgae device and preparation method thereof | |
| CN109970194A (en) | It is a kind of integrate Ao Baoer, biological multiplication, MBBR, MBR diversification technique sewage treatment pot | |
| CN114011346A (en) | Multifunctional hydrogel for fixing SRB by microbiological method and preparation method thereof | |
| CN103771648B (en) | A kind for the treatment of process of Low Concentration Ammonia Containing Wastewater | |
| CN103525802B (en) | A kind of preparation method of the immobilized spherule of Klebsiella Pneumoniae | |
| CN106698590B (en) | Resin regeneration anaerobic microbial reactor integrating biological culture and biological reduction and application thereof | |
| CN203593664U (en) | Efficient denitrifying packing for artificial wetlands |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160330 Address after: 226236 Jiangsu city of Nantong province Qidong Binhai Industrial Park Road Applicant after: JIANGSU LUBO ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 215000 No. 1701 Binhe Road, Jiangsu, Suzhou Applicant before: University of Science and Technology of Suzhou |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230112 Address after: 272114 No. 8 Anyang Road, Da'an Town, Yanzhou District, Jining City, Shandong Province Patentee after: Shandong Qingsu environmental protection material Co.,Ltd. Address before: 226236 Tongxian Road, Qidong Binhai Industrial Park, Nantong City, Jiangsu Province Patentee before: JIANGSU LUBO ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |