CN104624172B - Modified alta-mud and its preparation method and application - Google Patents
Modified alta-mud and its preparation method and application Download PDFInfo
- Publication number
- CN104624172B CN104624172B CN201410851040.7A CN201410851040A CN104624172B CN 104624172 B CN104624172 B CN 104624172B CN 201410851040 A CN201410851040 A CN 201410851040A CN 104624172 B CN104624172 B CN 104624172B
- Authority
- CN
- China
- Prior art keywords
- weight
- parts
- nano calcium
- epoxy resin
- amount
- 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.)
- Active
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 52
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 39
- 239000003822 epoxy resin Substances 0.000 claims abstract description 24
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 24
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 21
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000292 calcium oxide Substances 0.000 claims abstract description 21
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 20
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 19
- 239000000440 bentonite Substances 0.000 claims abstract description 18
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 18
- 239000005011 phenolic resin Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000005007 epoxy-phenolic resin Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 abstract description 10
- 239000012535 impurity Substances 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000013065 commercial product Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Dispersion Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of modified alta-mud and its preparation method and application, wherein, described preparation method includes: bentonite powder, nano calcium oxide and nano-calcium carbonate are mixed by (1), obtains mixture M 1；(2) in mixture M 1, add epoxy resin and phenolic resin, obtain modified alta-mud；Wherein, relative to the described bentonite powder of 100 weight portions, the consumption of described nano calcium oxide is 10 50 weight portions, and the consumption of described nano-calcium carbonate is 5 30 weight portions, the consumption of described epoxy resin is 1 10 weight portions, and the consumption of described phenolic resin is 5 30 weight portions.A certain proportion of bentonite powder, nano calcium oxide, nano-calcium carbonate, epoxy resin and phenolic resin are mixed by the present invention, the modified alta-mud prepared is made to have good adsorption effect, and above-mentioned modified alta-mud is applied in the process of sewage, making sewage be effectively addressed, the impurity in sewage is effectively adsorbed.
Description
Technical Field
The invention relates to the field of sewage treatment materials, in particular to modified bentonite and a preparation method and application thereof.
Background
In daily production and life, a large amount of waste water is generated, but the improper treatment of the waste water has great influence on the environment. The conventional treatment mode is to adsorb the sewage, but the direct adsorption effect of the general adsorption resin is not good.
Therefore, the present invention provides a modified bentonite having a good adsorption effect and a wide application range, and a preparation method thereof, which are problems to be solved by the present invention.
Disclosure of Invention
Aiming at the prior art, the invention aims to overcome the problem that the adsorption treatment effect is common in the sewage treatment process in the prior art, thereby providing the modified bentonite with good adsorption effect and wide application range and the preparation method thereof.
In order to achieve the above object, the present invention provides a method for preparing modified bentonite, wherein the method comprises:
(1) mixing bentonite powder, nano calcium oxide and nano calcium carbonate to obtain a mixture M1;
(2) adding epoxy resin and phenolic resin into the mixture M1 to obtain modified bentonite; wherein,
the nano calcium oxide is 10-50 parts by weight, the nano calcium carbonate is 5-30 parts by weight, the epoxy resin is 1-10 parts by weight, and the phenolic resin is 5-30 parts by weight, relative to 100 parts by weight of the bentonite powder.
The invention also provides the modified bentonite prepared by the preparation method.
The invention also provides application of the modified bentonite in sewage treatment.
According to the technical scheme, the bentonite powder, the nano calcium oxide, the nano calcium carbonate, the epoxy resin and the phenolic resin are mixed according to a certain proportion, so that the prepared modified bentonite has a good adsorption effect, and the modified bentonite is applied to sewage treatment, so that sewage is effectively treated, and impurities in the sewage are effectively adsorbed.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The following describes in detail specific embodiments of the present invention. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The invention provides a preparation method of modified bentonite, wherein the preparation method comprises the following steps:
(1) mixing bentonite powder, nano calcium oxide and nano calcium carbonate to obtain a mixture M1;
(2) adding epoxy resin and phenolic resin into the mixture M1 to obtain modified bentonite; wherein,
the nano calcium oxide is 10-50 parts by weight, the nano calcium carbonate is 5-30 parts by weight, the epoxy resin is 1-10 parts by weight, and the phenolic resin is 5-30 parts by weight, relative to 100 parts by weight of the bentonite powder.
The design is that the bentonite powder, the nano calcium oxide, the nano calcium carbonate, the epoxy resin and the phenolic resin are mixed according to a certain proportion, so that the prepared modified bentonite has a good adsorption effect, and the modified bentonite is applied to the treatment of sewage, so that the sewage is effectively treated, and impurities in the sewage are effectively adsorbed.
In order to obtain a better adsorption effect of the modified bentonite, in a preferred embodiment of the present invention, the nano calcium oxide is used in an amount of 15 to 25 parts by weight, the nano calcium carbonate is used in an amount of 8 to 15 parts by weight, the epoxy resin is used in an amount of 3 to 7 parts by weight, and the phenolic resin is used in an amount of 8 to 15 parts by weight, based on 100 parts by weight of the bentonite powder.
In order to mix the raw materials more uniformly and avoid the reduction of the usability caused by the uneven mixing, in a more preferred embodiment of the present invention, the mixing process in the step (1) is stirring mixing.
The stirring and mixing can be performed according to the conventional stirring manner in the art, for example, in a preferred embodiment of the present invention, the stirring speed of the stirring and mixing can be set to 500-.
In order to obtain effective mixing of the bentonite, in a more preferred embodiment of the present invention, the step (2) may further comprise placing the mixture M1, the epoxy resin and the phenolic resin in a reaction kettle for reaction for 1-3 hours.
In order to improve the adsorption effect of the modified bentonite obtained after the reaction, in a more preferred embodiment of the present invention, the reaction temperature during the reaction may be set to 60 to 100 ℃.
The invention also provides the modified bentonite prepared by the preparation method.
The invention also provides application of the modified bentonite in sewage treatment.
The application method may be performed in a conventional manner, for example, in a preferred embodiment of the present invention, the application method may include: the modified bentonite is placed in a holding device, and sewage flows through the holding device.
The present invention will be described in detail below by way of examples. In the following examples, the bentonite powder is a conventional commercial product produced by an earth ore powder factory in Ningxiang county, the nano calcium oxide and the nano calcium carbonate are conventional commercial products, the epoxy resin is a conventional commercial epoxy resin with the trademark of 6101, and the phenolic resin is a conventional commercial product.
Example 1
Mixing 100g of bentonite powder, 15g of nano calcium oxide and 8g of nano calcium carbonate, placing the mixture in a condition that the rotating speed is 500r/min, and stirring the mixture for 30min to obtain a mixture M1; 3g of epoxy resin and 8g of phenolic resin are added into the mixture M1 and placed in a reaction kettle at the temperature of 60 ℃ for reaction for 1 hour, so that modified bentonite A1 is obtained.
Example 2
Mixing 100g of bentonite powder, 25g of nano calcium oxide and 15g of nano calcium carbonate, placing the mixture at the rotating speed of 1000r/min, and stirring for 60min to obtain a mixture M1; 7g of epoxy resin and 15g of phenolic resin are added into the mixture M1 and placed in a reaction kettle at the temperature of 100 ℃ for reaction for 3 hours to obtain modified bentonite A2.
Example 3
Mixing 100g of bentonite powder, 20g of nano calcium oxide and 12g of nano calcium carbonate, placing the mixture at the rotating speed of 800r/min, and stirring for 45min to obtain a mixture M1; 5g of epoxy resin and 12g of phenolic resin are added into the mixture M1 and placed in a reaction kettle at the temperature of 80 ℃ for reaction for 2 hours to obtain modified bentonite A3.
Example 4
The preparation was carried out according to the preparation method of example 1 except that the nano calcium oxide was used in an amount of 10g, the nano calcium carbonate was used in an amount of 5g, the epoxy resin was used in an amount of 1g, and the phenol resin was used in an amount of 5g, to obtain modified bentonite a 4.
Example 5
The preparation was carried out according to the preparation method of example 2 except that the nano calcium oxide was used in an amount of 50g, the nano calcium carbonate was used in an amount of 30g, the epoxy resin was used in an amount of 10g, and the phenol resin was used in an amount of 30g, to obtain modified bentonite a 5.
Comparative example 1
The preparation was carried out in accordance with the preparation method of example 3 except that the nano calcium oxide was used in an amount of 5g, the nano calcium carbonate was used in an amount of 2g, the epoxy resin was used in an amount of 0.5g, and the phenol resin was used in an amount of 2g, to obtain modified bentonite D1.
Comparative example 2
The preparation was carried out according to the preparation method of example 3 except that the nano calcium oxide was used in an amount of 80g, the nano calcium carbonate was used in an amount of 50g, the epoxy resin was used in an amount of 20g, and the phenol resin was used in an amount of 50g, to obtain modified bentonite D2.
Comparative example 3
A special resin D3 for wastewater treatment in the market, which is produced by Shaanxi blue deep special resin Co.
Test example
15g of each of the above A1-A5 and D1-D3 was placed in a holding device, and the pH of the wastewater was measured, and then the wastewater was passed through the holding device and measured again, and the results were as shown in Table 1.
TABLE 1
| Numbering | pH value (before treatment) | pH value (after treatment) |
| A1 | 5.6 | 7.1 |
| A2 | 5.6 | 7.2 |
| A3 | 5.6 | 7.1 |
| A4 | 5.6 | 6.8 |
| A5 | 5.6 | 6.5 |
| D1 | 5.6 | 5.7 |
| D2 | 5.6 | 5.8 |
| D3 | 5.6 | 6.2 |
As can be seen from Table 1, the pH value of the sewage treated by the modified bentonite prepared in the range of the invention is obviously improved and tends to be neutral, which is superior to that of the conventional commercial products, while the treatment effect of the modified bentonite prepared outside the range of the invention is basically not good, and the treatment effect of the modified bentonite prepared in the preferable range of the invention is better.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (5)
1. A preparation method of modified bentonite is characterized by comprising the following steps:
(1) mixing bentonite powder, nano calcium oxide and nano calcium carbonate to obtain a mixture M1;
(2) adding epoxy resin and phenolic resin into the mixture M1 to obtain modified bentonite; wherein,
the usage amount of the nano calcium oxide is 10-50 parts by weight, the usage amount of the nano calcium carbonate is 5-30 parts by weight, the usage amount of the epoxy resin is 1-10 parts by weight, and the usage amount of the phenolic resin is 5-30 parts by weight, relative to 100 parts by weight of the bentonite powder;
the mixing process in the step (1) is stirring and mixing, the stirring speed of the stirring and mixing is 500-;
the step (2) also comprises the step of placing the mixture M1, the epoxy resin and the phenolic resin in a reaction kettle for reaction for 1-3 hours, wherein the reaction temperature in the reaction process is 60-100 ℃.
2. The preparation method according to claim 1, wherein the nano calcium oxide is used in an amount of 15 to 25 parts by weight, the nano calcium carbonate is used in an amount of 8 to 15 parts by weight, the epoxy resin is used in an amount of 3 to 7 parts by weight, and the phenolic resin is used in an amount of 8 to 15 parts by weight, relative to 100 parts by weight of the bentonite powder.
3. A modified bentonite produced by the production method according to claim 1 or 2.
4. Use of the modified bentonite according to claim 3 for treating sewage.
5. The application of claim 4, wherein the application method comprises: the modified bentonite is placed in a holding device, and sewage flows through the holding device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851040.7A CN104624172B (en) | 2014-12-31 | 2014-12-31 | Modified alta-mud and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851040.7A CN104624172B (en) | 2014-12-31 | 2014-12-31 | Modified alta-mud and its preparation method and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104624172A CN104624172A (en) | 2015-05-20 |
| CN104624172B true CN104624172B (en) | 2016-08-24 |
Family
ID=53203696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410851040.7A Active CN104624172B (en) | 2014-12-31 | 2014-12-31 | Modified alta-mud and its preparation method and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104624172B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214631A (en) * | 2015-11-16 | 2016-01-06 | 鄢祺丹 | A kind of flexible PCB waste water treating agent based on modification biological sponge iron and preparation method |
| CN108342070A (en) * | 2018-05-04 | 2018-07-31 | 合肥天沃能源科技有限公司 | A kind of building special-purpose thermal insulation thermal insulation plate and preparation method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978424A (en) * | 1958-12-23 | 1961-04-04 | Glidden Co | Metal primers and coating compositions modified with lower alkyl esters of unsaturated aliphatic acids |
| CN1128182C (en) * | 2001-03-29 | 2003-11-19 | 中国科学院化学研究所 | Water soluble phenolic resin/nano clay composition and its preparing method |
| WO2005010078A1 (en) * | 2003-07-16 | 2005-02-03 | Dow Corning Corporation | Coating compositions containing aminofunctional silicone resins |
| CN101942167B (en) * | 2010-09-10 | 2012-05-23 | 天津工业大学 | Nanometer clay-containing high absorptive hydrogel as well as preparation method and application thereof |
| CN103203217A (en) * | 2012-12-20 | 2013-07-17 | 余姚市浙工大技术转移中心 | Interlayer silane modified bentonite and application thereof |
| CN104229813B (en) * | 2014-08-28 | 2016-01-20 | 中南大学 | A kind of method for preparing modified bentonite and application thereof |
-
2014
- 2014-12-31 CN CN201410851040.7A patent/CN104624172B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104624172A (en) | 2015-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103145234B (en) | Aerobic bio-particle carrier for directly removing ammonia nitrogen from sewage with low carbon nitrogen ratio and preparation method thereof | |
| CN104998620B (en) | Modified peanut shell biochar/polyaluminium chloride sludge composite adsorption material | |
| CN102674511B (en) | Method for preparing composite flocculant for printing and dyeing wastewater treatment | |
| CN105692850B (en) | A kind of preparation method of water process banana skin high-molecular coagulant adopting | |
| CN103551111A (en) | Active carbon for absorbing vehicle exhaust | |
| CN103071450B (en) | Defluorination adsorbent as well as preparation method and application thereof | |
| CN104624172B (en) | Modified alta-mud and its preparation method and application | |
| CN105948457A (en) | Compounded sludge dewatering conditioner and application method thereof | |
| CN104815619A (en) | Oilseed rape straw/hydrotalcite composite material and preparation method and application thereof | |
| CN106830137A (en) | A kind of the dirty water decontamination handles agent for sanitary sewage and preparation method thereof | |
| CN107788325A (en) | A kind of safety and environmental protection food preservative and preparation method thereof | |
| CN105251457A (en) | Printing and dyeing wastewater purifying agent and preparation method thereof | |
| CN108996807A (en) | A method of with nitrogen phosphorus in modified steel scoria-zeolite absorption degradation sanitary sewage | |
| CN104045130A (en) | Bentonite-Fe-C composite water treatment agent and preparation method and application thereof | |
| CN103962098A (en) | Fine sand adsorption material for wastewater treatment | |
| CN113164850A (en) | Health function customized natural mineral substance activated composite filter and manufacturing method thereof | |
| CN103241819B (en) | Modified red earth flocculant and method for preparing same | |
| CN106734162A (en) | A kind of inexpensive soil-repairing agent doped with activated sludge and preparation method thereof | |
| CN105366756A (en) | Sewage treatment agent production method | |
| CN103723807A (en) | Preparation method of flocculating agent for dyeing wastewater treatment | |
| CN104528845A (en) | Preparation method of compounded system for coal-washing wastewater treatment and application method of compounded system | |
| CN103910389A (en) | Method for producing sterilization-deodorizing type water purification filter material | |
| CN105268408A (en) | Preparation method of removing agent for anions in wastewater | |
| CN108384282A (en) | A kind of filler modified method of ardealite | |
| CN106892480A (en) | A kind of method for processing high concentrated organic wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |