CN102491729A - Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water - Google Patents
Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water Download PDFInfo
- Publication number
- CN102491729A CN102491729A CN2011103565185A CN201110356518A CN102491729A CN 102491729 A CN102491729 A CN 102491729A CN 2011103565185 A CN2011103565185 A CN 2011103565185A CN 201110356518 A CN201110356518 A CN 201110356518A CN 102491729 A CN102491729 A CN 102491729A
- Authority
- CN
- China
- Prior art keywords
- ceramsite
- zeolite powder
- water
- zeolite
- feedwater
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention provides a method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water, and belongs to the technical field of micro-polluted water pretreatment. The ceramsite is prepared from water supply factory dehydrated sludge, modified zeolite powder and a pore-forming agent according to a certain proportion by the following method which comprises the following steps of: drying, smashing and sieving the water supply factory dehydrated sludge to obtain dry sludge; smashing, sieving and calcining natural zeolite powder, and moidifying the natural zeolite powder by sodium chloride to obtain the modified zeolite powder; uniformly mixing 50 to 60 percent of the dry sludge, 35 to 49 percent of the modified zeolite powder and 1 to 5 percent of the pore-forming agent, and granulating the mixture on a granulating machine to form balls, and thus obtaining raw materials of which the particle sizes are 2 to 7 millimeters; drying and roasting the raw materials to obtain sintered ceramsite; and naturally cooling the sintered ceramsite to room temperature, and screening to obtain the ceramsite finished product. The surface of the ceramsite prepared by using the method is rough; the ceramsite has multiple apertures; and the ceramsite is used for pretreating the micro-polluted aquatic growths to forcibly remove ammonia, nitrogen and organic matters.
Description
Technical field
The invention belongs to micro-polluted water preconditioning technique field, be specifically related to be used for the preparation method of the pretreated zeolite feedwater of micro-polluted water sludge ceramsite.
Background technology
In recent years; Increase along with high speed development, quickening of urbanization process and the agrochemicals kind and the quantity of industry; Drinking water source, the most of cities and towns of China has received pollution in various degree; Majority has changed micro polluted source into, and pollutent such as organism, ammonia nitrogen surpasses the standard of surface water environment quality III class water body in the water.Traditional handling technology of water supply coagulation-deposition-filtration-sterilization is not only limited to organism in the micro polluted source and ammonia nitrogen removal effect; And also can occur in the treating processes endangering bigger cholorination by product, be difficult to reach the GB5749-2006 national drinking water standard.Research shows, adds that before traditional handling technology of water supply the Biological Pretreatment technology is economy, the effective ways that solve dissolved organic matter and ammonia nitrogen in the micro polluted source.
In giving water treatment, the Biological Pretreatment technology mostly adopts biomembrance process, and biofilter material is its core position.Common filtrate mainly contains haydite, plastic filler, soft-filler, combined stuffing etc. at present.Haydite is the most ripe, the most frequently used Biological Pretreatment filler.And conventional leca mainly is to rely on the physiological activity of the mikrobe of growth on it to come organism and ammonia nitrogen in the degradation water, and when temperature was low, microbial activities weakened, and treatment effect is undesirable.
Zeolite is the porousness hydrous alumino silicates crystalline general name that is frame shape structure, because of its inside exists a lot of uniform micropores and passage and links each other, makes zeolite have huge surface-area, becomes the good carrier of microorganism growth.On the other hand, the huge active surface of zeolite makes it have powerful London force, and positively charged ion that distributes in the zeolite hole and part frame oxygen have the mutual balance of negative charge, thereby around ion, forms powerful electric field, so zeolite has electrostatic force again.The adding and cause the adsorptive power of zeolite strong especially of London force and electrostatic force because the existence of electrostatic force, make zeolite to polarity, unsaturated, be prone to polar molecule and have preferential selection adsorption.Therefore, zeolite has stronger IX and absorption property to ammonia nitrogen in the water and polar organic matter pollutent.For making full use of zeolite ammonia nitrogen and organism being had the good adsorption performance, is again the good carrier of biological growth simultaneously, and natural zeolite has been used in the biology and processing of micro-polluted source water as filler after pulverizing appropriate particle size.But because mostly the zeolite after pulverizing is irregular granular, voidage is inhomogeneous, the big place of voidage, and aeration rate is too many, the place that voidage is little, aeration rate is too little, even produces anaerobic environment, and these all exert an influence to treatment effect.
Waterworks sludge results from the production process of city tap-water; Carried out rubbish mainly as waste at present and filled up processing; This had both increased the production cost of water supply plant, had taken a large amount of land resources again, so the resource utilization problem values of waterworks sludge must be inquired into.Because its composition is similar with conventional clay, the investigator is arranged with producing haydite for the sewage sludge substitute for clay, but being used for strong concrete more, makes the haydite of producing, thereby as material of construction.Haydite as material of construction; The main intensity of stressing haydite, and the haydite that the micro-polluted source water Biological Pretreatment is used are except need satisfy certain intensity; Also need surface irregularity; Certain aperture is arranged, help biomembranous growth, therefore on product requirement and making method, exist obviously different with haydite for building.One Chinese patent application CN101955347 discloses " method of manufacture of zeolite glass porous light-weight material ", and utilizing natural zeolite, cullet, waterworks sludge etc. is the main material production porous material.On the one hand, the porous material that this patent is produced is that thickness is the rectangular parallelepiped of 2cm, and is unsuitable to microorganism carrier; On the other hand, this patent uses natural zeolite as raw material, because the natural zeolite endoporus is stopped up by plurality of impurities, absorption property is very limited.Up to now, also do not utilize waterworks sludge, modified zeolite powder etc. to make the report that is used for micro-polluted source water Biological Pretreatment haydite as basic raw material.
Summary of the invention
Above technical problem to the prior art existence; For strong absorption property and the biological oxidation of zeolite to ammonia nitrogen and polar organic matter combined; The problem of ammonia nitrogen and removal effect of organic matter and solution waterworks sludge resource utilization in the reinforcement micro-polluted source water; The invention provides a kind of is main raw material with water supply plant dewatered sludge, modified zeolite powder etc., adds pore-forming material and fires the micro-polluted water Biological Pretreatment that forms with zeolite based feedwater sludge ceramsite and preparation method.
The preparing method's who is used for the pretreated zeolite of micro-polluted water feedwater sludge ceramsite provided by the present invention concrete steps are following:
(1) preparation feedwater dewatered sludge: with the dewatered sludge of water supply plant water ratio 80wt%; At 105 ~ 110 ℃ of dry 2h, obtain the feedwater dewatered sludge of water ratio 52 wt%, then said feedwater dewatered sludge is pulverized in kibbler; Cross 80 mesh sieves, obtain particle diameter less than the Powdered feedwater dewatered sludge of 80 purposes;
(2) preparation modified zeolite powder: natural zeolite is pulverized with kibbler; Cross 80 mesh sieves, the zeolite powder after sieving is put in the retort furnace roasting 2h under 350 ℃ of conditions, be cooled to after the room temperature zeolite powder is packed in the adsorption column; Sodium chloride solution with 1mol/L passes through said adsorption column with the flow velocity following current of 0.25m/h then; After 10 times of sodium chloride solutions to the 1mol/L of zeolite volume passed through said adsorption column, modified active finished, the zeolite behind the taking-up modified active; In air dry oven, under 105 ~ 110 ℃ of conditions, obtain modified zeolite powder behind the dry 2h;
(3) raw materials mix: the Powdered feedwater dewatered sludge that step (1) is made, modified zeolite powder and the pore-forming material sodium hydrogencarbonate that step (2) makes are respectively according to mass percent: 50 ~ 60%, 35 ~ 49% and 1 ~ 5% ratio; Join to mix and mix 30min in the still, make compound;
(4) balling-up: the prepared compound of step (3) is transferred in the tumbling disk granulator, adds the laggard capable granulation of entry, the quality that adds entry is 5% of a said mixture quality, obtains the spherical raw material of particle diameter at 2 ~ 7mm;
(5) spherical raw material pre-treatment: the prepared spherical raw material of step (4) are put into air dry oven, and under 105 ~ 110 ℃ of conditions, dry 60min obtains the oven dry material;
(6) roasting: the prepared oven dry material of step (5) is put into retort furnace; Setting the retort furnace temperature rise rate is 5 ℃/min; Constant temperature calcining 30min after muffle furnace is raised to 1000 ℃ gradually from room temperature obtains the haydite after the roasting, naturally cools to room temperature then;
(7) the prepared haydite of step (6) is sieved, remove substandard product, obtain the haydite finished product of different-grain diameter.
The present invention compares with leca with the water treatment of routine and has the following advantages:
(1) the present invention replaces conventional clay to make haydite with the water supply plant dewatered sludge, both waterworks sludge has been carried out recycling, has protected clay resource again.
(2) because zeolite has a lot of holes and passage, and filter material surface roughness and specific surface area that the present invention is prepared all have obvious increase, be used for micro-polluted source water Biological Pretreatment technology, help the extension film growth of mikrobe.
(3) because the introducing of zeolite; The prepared haydite of this invention is used for the micro-polluted water Biological Pretreatment; The absorption and the biological degradation of zeolite are combined; Promoted ammonia nitrogen and organic removal greatly, especially bigger to the raising of ammonia nitrogen removal effect, the ability of anti-ammonia nitrogen impact load obviously strengthens.
Embodiment
Each raw materials quality is formed as follows among the embodiment 1-3 that this embodiment provides:
The feedwater dewatered sludge of embodiment 1:60%, 35% modified zeolite powder and 5% pore-forming material sodium hydrogencarbonate.
The feedwater dewatered sludge of embodiment 2:50%, 49% modified zeolite powder and 1% pore-forming material sodium hydrogencarbonate.
The feedwater dewatered sludge of embodiment 3:55%, 42% modified zeolite powder and 3% pore-forming material sodium hydrogencarbonate.
Concrete preparation process is following:
(1) preparation feedwater dewatered sludge: with the dewatered sludge of water supply plant water ratio 80wt%; At 105 ~ 110 ℃ of dry 2h, obtain the feedwater dewatered sludge of water ratio 52 wt%, then said feedwater dewatered sludge is pulverized in kibbler; Cross 80 mesh sieves, obtain Powdered feedwater dewatered sludge;
(2) preparation modified zeolite powder: natural zeolite is pulverized with kibbler; Cross 80 mesh sieves, the zeolite powder after sieving is put in the retort furnace roasting 2h under 350 ℃ of conditions, be cooled to after the room temperature zeolite powder is packed in the adsorption column; Sodium chloride solution with 1mol/L passes through said adsorption column with the flow velocity following current of 0.25m/h then; After 10 times of sodium chloride solutions to the 1mol/L of zeolite volume passed through said adsorption column, modified active finished, the zeolite behind the taking-up modified active; In air dry oven, under 105 ~ 110 ℃ of conditions, obtain modified zeolite powder behind the dry 2h;
(3) raw materials mix: the Powdered feedwater dewatered sludge that step (1) is made, the modified zeolite powder that step (2) makes and pore-forming material sodium hydrogencarbonate join to mix and mix 30min in the still, make compound;
(4) balling-up: the prepared compound of step (3) is transferred in the tumbling disk granulator, adds the laggard capable granulation of entry, the quality that adds entry is 5% of a said mixture quality, obtains the spherical raw material of particle diameter at 2 ~ 7mm;
(5) spherical raw material pre-treatment: the prepared spherical raw material of step (4) are put into air dry oven, and under 105 ~ 110 ℃ of conditions, dry 60min obtains the oven dry material;
(6) roasting: the prepared oven dry material of step (5) is put into retort furnace; Setting the retort furnace temperature rise rate is 5 ℃/min; Constant temperature calcining 30min after muffle furnace is raised to 1000 ℃ gradually from room temperature obtains the haydite after the roasting, naturally cools to room temperature then;
(7) the prepared haydite of step (6) is sieved, remove substandard product, obtain the haydite finished product of different-grain diameter.
The prepared haydite of embodiment 1-3 all meets the relevant regulations of " artificial ceramic grain filter is used in water treatment ".
Claims (2)
1. be used for the preparation method of the pretreated zeolite feedwater of micro-polluted water sludge ceramsite, it is characterized in that these preparing method's concrete steps are following:
(1) preparation feedwater dewatered sludge: with the dewatered sludge of water supply plant water ratio 80wt%; At 105 ~ 110 ℃ of dry 2h, obtain the feedwater dewatered sludge of water ratio 52 wt%, then said feedwater dewatered sludge is pulverized in kibbler; Cross 80 mesh sieves, obtain particle diameter less than the Powdered feedwater dewatered sludge of 80 purposes;
(2) preparation modified zeolite powder: natural zeolite is pulverized with kibbler; Cross 80 mesh sieves, the zeolite powder after sieving is put in the retort furnace roasting 2h under 350 ℃ of conditions, be cooled to after the room temperature zeolite powder is packed in the adsorption column; Sodium chloride solution with 1mol/L passes through said adsorption column with the flow velocity following current of 0.25m/h then; After 10 times of sodium chloride solutions to the 1mol/L of zeolite volume passed through said adsorption column, modified active finished, the zeolite behind the taking-up modified active; In air dry oven, under 105 ~ 110 ℃ of conditions, obtain modified zeolite powder behind the dry 2h;
(3) raw materials mix: the Powdered feedwater dewatered sludge that step (1) is made, modified zeolite powder and the pore-forming material sodium hydrogencarbonate that step (2) makes are respectively according to mass percent: 50 ~ 60%, 35 ~ 49% and 1 ~ 5% ratio; Join to mix and mix 30min in the still, make compound;
(4) balling-up: the prepared compound of step (3) is transferred in the tumbling disk granulator, adds the laggard capable granulation of entry, the quality that adds entry is 5% of a said mixture quality, obtains the spherical raw material of particle diameter at 2 ~ 7mm;
(5) spherical raw material pre-treatment: the prepared spherical raw material of step (4) are put into air dry oven, and under 105 ~ 110 ℃ of conditions, dry 60min obtains the oven dry material;
(6) roasting: the prepared oven dry material of step (5) is put into retort furnace; Setting the retort furnace temperature rise rate is 5 ℃/min; Constant temperature calcining 30min after muffle furnace is raised to 1000 ℃ gradually from room temperature obtains the haydite after the roasting, naturally cools to room temperature then;
(7) the prepared haydite of step (6) is sieved, remove substandard product, obtain the haydite finished product of different-grain diameter.
2. preparation method according to claim 1 is characterized in that prepared haydite is used for the micro-polluted water pre-treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103565185A CN102491729B (en) | 2011-11-11 | 2011-11-11 | Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103565185A CN102491729B (en) | 2011-11-11 | 2011-11-11 | Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102491729A true CN102491729A (en) | 2012-06-13 |
| CN102491729B CN102491729B (en) | 2013-04-03 |
Family
ID=46183599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103565185A Active CN102491729B (en) | 2011-11-11 | 2011-11-11 | Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102491729B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028384A (en) * | 2012-12-03 | 2013-04-10 | 姜英杰 | Preparation method of high-capacity fluorion adsorbent |
| CN103991971A (en) * | 2014-05-30 | 2014-08-20 | 东北大学 | Ditch matrix for controlling ammonia nitrogen in paddy field recession and preparation method of ditch matrix |
| CN105130391A (en) * | 2015-07-10 | 2015-12-09 | 武汉理工大学 | Method of preparing light-weight ceramic granules by sintering lake-bottom mud and municipal sludge |
| CN106076252A (en) * | 2016-06-15 | 2016-11-09 | 北京建筑大学 | A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously |
| CN110721662A (en) * | 2019-10-30 | 2020-01-24 | 安徽工业大学 | Preparation method and recovery method of modified zeolite powder for simultaneously removing natural organic matters and ammonia nitrogen in slightly polluted water |
| CN111087199A (en) * | 2019-12-20 | 2020-05-01 | 南通斐腾新材料科技有限公司 | Preparation method of porous hollow zeolite particles for adsorbing VOCs (volatile organic compounds) |
| CN112174294A (en) * | 2020-08-28 | 2021-01-05 | 江苏河清海晏环境有限公司 | Preparation method of composite filler for advanced sewage treatment |
| CN112844304A (en) * | 2021-02-05 | 2021-05-28 | 苏州科技大学 | Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof |
| CN113402012A (en) * | 2021-06-02 | 2021-09-17 | 浙江工业大学 | Aerobic composting reinforced horizontal subsurface flow constructed wetland denitrification device and application |
| CN115608340A (en) * | 2022-10-11 | 2023-01-17 | 青岛科技大学 | Magnetic ceramsite adsorbent for removing heavy metal copper ions in water and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644565A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for producing light ceramic particles from mud in water supply plant and sewage treating plant |
| CN101569852A (en) * | 2009-05-27 | 2009-11-04 | 暨南大学 | Method for modifying natural zeolite powder |
| CN101955374A (en) * | 2010-09-06 | 2011-01-26 | 黑龙江百赫矿业科技开发有限公司 | Method for manufacturing zeolite-glass porous light material |
-
2011
- 2011-11-11 CN CN2011103565185A patent/CN102491729B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644565A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for producing light ceramic particles from mud in water supply plant and sewage treating plant |
| CN101569852A (en) * | 2009-05-27 | 2009-11-04 | 暨南大学 | Method for modifying natural zeolite powder |
| CN101955374A (en) * | 2010-09-06 | 2011-01-26 | 黑龙江百赫矿业科技开发有限公司 | Method for manufacturing zeolite-glass porous light material |
Non-Patent Citations (2)
| Title |
|---|
| 李日强 等: "沸石的活化及其对水中氨氮的吸附", 《环境科学学报》 * |
| 杜欣 等: "城市生活污泥烧结制陶粒的两种工艺比较研究", 《环境工程学报》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028384A (en) * | 2012-12-03 | 2013-04-10 | 姜英杰 | Preparation method of high-capacity fluorion adsorbent |
| CN103991971A (en) * | 2014-05-30 | 2014-08-20 | 东北大学 | Ditch matrix for controlling ammonia nitrogen in paddy field recession and preparation method of ditch matrix |
| CN105130391A (en) * | 2015-07-10 | 2015-12-09 | 武汉理工大学 | Method of preparing light-weight ceramic granules by sintering lake-bottom mud and municipal sludge |
| CN105130391B (en) * | 2015-07-10 | 2017-11-17 | 武汉理工大学 | The method for preparing light ceramic using bottom mud in lake and municipal sludge microwave sintering |
| CN106076252A (en) * | 2016-06-15 | 2016-11-09 | 北京建筑大学 | A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously |
| CN110721662A (en) * | 2019-10-30 | 2020-01-24 | 安徽工业大学 | Preparation method and recovery method of modified zeolite powder for simultaneously removing natural organic matters and ammonia nitrogen in slightly polluted water |
| CN111087199A (en) * | 2019-12-20 | 2020-05-01 | 南通斐腾新材料科技有限公司 | Preparation method of porous hollow zeolite particles for adsorbing VOCs (volatile organic compounds) |
| CN112174294A (en) * | 2020-08-28 | 2021-01-05 | 江苏河清海晏环境有限公司 | Preparation method of composite filler for advanced sewage treatment |
| CN112844304A (en) * | 2021-02-05 | 2021-05-28 | 苏州科技大学 | Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof |
| CN113402012A (en) * | 2021-06-02 | 2021-09-17 | 浙江工业大学 | Aerobic composting reinforced horizontal subsurface flow constructed wetland denitrification device and application |
| CN113402012B (en) * | 2021-06-02 | 2023-12-12 | 浙江工业大学 | Aerobic composting reinforced horizontal subsurface flow constructed wetland denitrification device and application |
| CN115608340A (en) * | 2022-10-11 | 2023-01-17 | 青岛科技大学 | Magnetic ceramsite adsorbent for removing heavy metal copper ions in water and preparation method thereof |
| CN115608340B (en) * | 2022-10-11 | 2024-02-02 | 青岛科技大学 | Magnetic ceramsite adsorbent for removing heavy metal copper ions in water and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102491729B (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102491729B (en) | Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water | |
| CN102515834B (en) | Preparation method of waterworks sludge ceramsites for pretreating micro-polluted water | |
| CN102527343B (en) | Preparation method of kieselguhr composite adsorbent | |
| CN104971699B (en) | A kind of modified zeolite organic matter complexing agent of sewage synchronous denitrification dephosphorizing and preparation method thereof, using and methods for using them | |
| CN103801256B (en) | A kind of porous adsorbing medium for water treatment and preparation method thereof | |
| CN104710079B (en) | A kind of applying modified modenite is processed the method for municipal middle water | |
| CN102247800A (en) | Composite ceramsite prepared from bentonite, perlite and zeolite serving as main raw materials and preparation method of composite ceramsite | |
| CN102381868A (en) | Method for rapidly preparing ceramsite by utilizing mudflat sludge | |
| CN101559349A (en) | Calcination-free zeolite filter material activated by hydrochloric acid and preparation method thereof | |
| KR101450078B1 (en) | A ceramic ball for a water purifier, a method for preparing the same, a water purifier comprising the same, and a method for purifying water using the same | |
| CN113562999A (en) | Light ceramsite prepared from incineration fly ash of waste power plant and preparation method thereof | |
| CN110642589B (en) | Cu2+Slow-release functional core-shell lightweight aggregate and preparation method thereof | |
| CN108584974A (en) | Using shell and construction waste as artificial zeolite of raw material and preparation method thereof | |
| CN101497021A (en) | Baking-free type porous composite zeolite filter material and preparation method thereof | |
| CN102807360B (en) | Preparation of ceramic particle by adopting calcium fluoride sludge | |
| CN111036170B (en) | Water purification sludge composite adsorbent and application thereof | |
| CN104069824B (en) | A kind of compound ionic adsorption carbon film and preparation method thereof | |
| CN114014689B (en) | Low-temperature pore-forming water-storage ceramsite prepared from solid waste and preparation method of ceramsite | |
| CN111888913B (en) | Granular biological filter material for biological deodorization of waste gas based on dewatered sludge of municipal sewage plant, preparation method and application | |
| CN105836898B (en) | Artificial wetland composite substrate containing modified waste bricks and preparation method thereof | |
| CN110575812B (en) | Environment-friendly adsorbing material for efficient phosphorus removal of argil/pyrolusite and preparation method thereof | |
| CN107651812B (en) | Advanced sewage treatment process | |
| CN105152353A (en) | Method for treating heavy metals in sewage by Gram bacteria | |
| CN112844304A (en) | Sodium pyrophosphate modified water purification sludge/zeolite composite adsorbent and preparation method and application thereof | |
| CN112979394A (en) | Method for preparing soil improvement matrix from solid waste of coal-fired power plant |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: DING MEIHUA Free format text: FORMER OWNER: ANHUI UNIVERSITY OF TECHNOLOGY Effective date: 20141210 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 243002 MAANSHAN, ANHUI PROVINCE TO: 201802 JIADING, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20141210 Address after: 201802 Shanghai city Jiading District Nanxiang Street No. 1 Lane 276 democracy building 602 Patentee after: Ding Meihua Address before: 243002 Ma'anshan, East Lake Road, Anhui, No. 59 Patentee before: Anhui University of Technology |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120613 Assignee: Shanghai Jiang Ke Industrial Equipment Co., Ltd. Assignor: Ding Meihua Contract record no.: 2015310000022 Denomination of invention: Method for preparing zeolite water-supply sludge ceramsite for pretreating micro-polluted water Granted publication date: 20130403 License type: Exclusive License Record date: 20150213 |