CN102320583A - 一种利用白云石回收城市污泥厌氧消化液中磷的方法 - Google Patents
一种利用白云石回收城市污泥厌氧消化液中磷的方法 Download PDFInfo
- Publication number
- CN102320583A CN102320583A CN201110208721A CN201110208721A CN102320583A CN 102320583 A CN102320583 A CN 102320583A CN 201110208721 A CN201110208721 A CN 201110208721A CN 201110208721 A CN201110208721 A CN 201110208721A CN 102320583 A CN102320583 A CN 102320583A
- Authority
- CN
- China
- Prior art keywords
- phosphorus
- anaerobic digestion
- digestion solution
- calcium
- dolomite
- 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
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 209
- 239000011574 phosphorus Substances 0.000 title claims abstract description 205
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 197
- 238000000034 method Methods 0.000 title claims abstract description 56
- 239000010802 sludge Substances 0.000 title claims abstract description 30
- 239000010459 dolomite Substances 0.000 title claims abstract description 27
- 229910000514 dolomite Inorganic materials 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 title claims description 24
- 230000001079 digestive effect Effects 0.000 title 1
- 238000004064 recycling Methods 0.000 title 1
- 230000029087 digestion Effects 0.000 claims abstract description 128
- 239000000047 product Substances 0.000 claims abstract description 75
- 238000011084 recovery Methods 0.000 claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 239000006228 supernatant Substances 0.000 claims abstract description 39
- 229910001424 calcium ion Inorganic materials 0.000 claims abstract description 26
- 229910001425 magnesium ion Inorganic materials 0.000 claims abstract description 26
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011575 calcium Substances 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- 239000000243 solution Substances 0.000 claims description 126
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 54
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 25
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 23
- 238000004090 dissolution Methods 0.000 claims description 23
- 238000005374 membrane filtration Methods 0.000 claims description 22
- 239000005416 organic matter Substances 0.000 claims description 18
- 239000002244 precipitate Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- ZQBZAOZWBKABNC-UHFFFAOYSA-N [P].[Ca] Chemical compound [P].[Ca] ZQBZAOZWBKABNC-UHFFFAOYSA-N 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 50
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 25
- 238000001914 filtration Methods 0.000 abstract description 21
- MXZRMHIULZDAKC-UHFFFAOYSA-L ammonium magnesium phosphate Chemical compound [NH4+].[Mg+2].[O-]P([O-])([O-])=O MXZRMHIULZDAKC-UHFFFAOYSA-L 0.000 abstract description 16
- 239000011777 magnesium Substances 0.000 abstract description 14
- 229910052749 magnesium Inorganic materials 0.000 abstract description 10
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 7
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 58
- 238000003556 assay Methods 0.000 description 28
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 23
- 230000008569 process Effects 0.000 description 22
- 229910001385 heavy metal Inorganic materials 0.000 description 16
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 15
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 15
- MWKXCSMICWVRGW-UHFFFAOYSA-N calcium;phosphane Chemical compound P.[Ca] MWKXCSMICWVRGW-UHFFFAOYSA-N 0.000 description 14
- 229910052567 struvite Inorganic materials 0.000 description 14
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 11
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 9
- 239000000920 calcium hydroxide Substances 0.000 description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 9
- 230000008021 deposition Effects 0.000 description 8
- 229910001392 phosphorus oxide Inorganic materials 0.000 description 8
- 239000013049 sediment Substances 0.000 description 8
- 229910019142 PO4 Inorganic materials 0.000 description 6
- 239000000292 calcium oxide Substances 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 6
- 239000010452 phosphate Substances 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 235000016709 nutrition Nutrition 0.000 description 4
- 230000035764 nutrition Effects 0.000 description 4
- 239000012716 precipitator Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 238000012851 eutrophication Methods 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 2
- FUFJGUQYACFECW-UHFFFAOYSA-L calcium hydrogenphosphate Chemical compound [Ca+2].OP([O-])([O-])=O FUFJGUQYACFECW-UHFFFAOYSA-L 0.000 description 2
- 239000001506 calcium phosphate Substances 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- XYJRXVWERLGGKC-UHFFFAOYSA-D pentacalcium;hydroxide;triphosphate Chemical compound [OH-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O XYJRXVWERLGGKC-UHFFFAOYSA-D 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000019731 tricalcium phosphate Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- HECLRDQVFMWTQS-UHFFFAOYSA-N Dicyclopentadiene Chemical compound C1C2C3CC=CC3C1C=C2 HECLRDQVFMWTQS-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- 229910017958 MgNH Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- WYWFMUBFNXLFJK-UHFFFAOYSA-N [Mo].[Sb] Chemical compound [Mo].[Sb] WYWFMUBFNXLFJK-UHFFFAOYSA-N 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- XAAHAAMILDNBPS-UHFFFAOYSA-L calcium hydrogenphosphate dihydrate Chemical compound O.O.[Ca+2].OP([O-])([O-])=O XAAHAAMILDNBPS-UHFFFAOYSA-L 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052588 hydroxylapatite Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229960001708 magnesium carbonate Drugs 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000002367 phosphate rock Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000001038 titanium pigment Substances 0.000 description 1
- 229910000391 tricalcium phosphate Inorganic materials 0.000 description 1
- 229940078499 tricalcium phosphate Drugs 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110208721 CN102320583B (zh) | 2011-07-25 | 2011-07-25 | 一种利用白云石回收城市污泥厌氧消化液中磷的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110208721 CN102320583B (zh) | 2011-07-25 | 2011-07-25 | 一种利用白云石回收城市污泥厌氧消化液中磷的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102320583A true CN102320583A (zh) | 2012-01-18 |
| CN102320583B CN102320583B (zh) | 2013-04-03 |
Family
ID=45448463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110208721 Expired - Fee Related CN102320583B (zh) | 2011-07-25 | 2011-07-25 | 一种利用白云石回收城市污泥厌氧消化液中磷的方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102320583B (zh) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104478185A (zh) * | 2014-12-05 | 2015-04-01 | 广东省生态环境与土壤研究所 | 一种利用mfc从污泥中回收磷的方法 |
| CN105217910A (zh) * | 2015-11-06 | 2016-01-06 | 青岛智科生态环境技术有限公司 | 一种污泥资源化处理方法 |
| CN107298513A (zh) * | 2017-08-07 | 2017-10-27 | 南京林业大学 | 一种复混肥料的制备方法及其专用装置 |
| CN107399728A (zh) * | 2013-05-02 | 2017-11-28 | 易开采瑞典有限公司 | 从含有磷以及铁和铝中至少一个的材料产生磷酸盐化合物 |
| CN115521025A (zh) * | 2022-09-23 | 2022-12-27 | 贵州大学 | 一种低成本协同处理酸性矿山废水和垃圾渗滤液的方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585522A (zh) * | 2009-06-18 | 2009-11-25 | 南京林业大学 | 一种从城市污泥厌氧消化液中回收磷的方法 |
| US20100282674A1 (en) * | 2009-05-07 | 2010-11-11 | Phillip Barak | Phosphate Recovery From Acid Phase Anaerobic Digesters |
-
2011
- 2011-07-25 CN CN 201110208721 patent/CN102320583B/zh not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100282674A1 (en) * | 2009-05-07 | 2010-11-11 | Phillip Barak | Phosphate Recovery From Acid Phase Anaerobic Digesters |
| CN101585522A (zh) * | 2009-06-18 | 2009-11-25 | 南京林业大学 | 一种从城市污泥厌氧消化液中回收磷的方法 |
Non-Patent Citations (2)
| Title |
|---|
| 梅翔等: "城市污泥中磷的释放与回收", 《环境科学与技术》, vol. 33, no. 1, 31 January 2010 (2010-01-31), pages 80 - 84 * |
| 王磊等: "污泥厌氧消化液中碳酸盐对回收磷的影响", 《环境工程学报》, vol. 4, no. 7, 31 July 2010 (2010-07-31), pages 1519 - 1524 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107399728A (zh) * | 2013-05-02 | 2017-11-28 | 易开采瑞典有限公司 | 从含有磷以及铁和铝中至少一个的材料产生磷酸盐化合物 |
| US10745279B2 (en) | 2013-05-02 | 2020-08-18 | Easymining Sweden Ab | Production of phosphate compounds from materials containing phosphorus and at least one of iron and aluminium |
| CN104478185A (zh) * | 2014-12-05 | 2015-04-01 | 广东省生态环境与土壤研究所 | 一种利用mfc从污泥中回收磷的方法 |
| CN104478185B (zh) * | 2014-12-05 | 2016-08-10 | 广东省生态环境与土壤研究所 | 一种利用mfc从污泥中回收磷的方法 |
| CN105217910A (zh) * | 2015-11-06 | 2016-01-06 | 青岛智科生态环境技术有限公司 | 一种污泥资源化处理方法 |
| CN107298513A (zh) * | 2017-08-07 | 2017-10-27 | 南京林业大学 | 一种复混肥料的制备方法及其专用装置 |
| CN115521025A (zh) * | 2022-09-23 | 2022-12-27 | 贵州大学 | 一种低成本协同处理酸性矿山废水和垃圾渗滤液的方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102320583B (zh) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Crutchik et al. | Struvite crystallization versus amorphous magnesium and calcium phosphate precipitation during the treatment of a saline industrial wastewater | |
| Wu et al. | Graphite accelerate dissimilatory iron reduction and vivianite crystal enlargement | |
| Booker et al. | Struvite formation in wastewater treatment plants: opportunities for nutrient recovery | |
| US9102555B2 (en) | Method for removing phosphorus and nitrogen contained in sewage or wastewater using iron ore wastewater | |
| CN107311277B (zh) | 一种同时去除水中砷磷氟的纳米药剂及其制备方法 | |
| CN102092871A (zh) | 一种以盐卤为镁源回收含氮磷废水中氮磷的方法 | |
| CN109502720A (zh) | 一种利用脱硫废水中镁盐去除废水中氮磷的方法 | |
| CN108698827A (zh) | 用于从废水中生产磷产品的方法 | |
| CN111362245B (zh) | 一种从黑水中高效回收氮磷资源的方法 | |
| Chen et al. | Impact of impurities on vivianite crystallization for phosphate recovery from process water of hydrothermal carbonization of kitchen waste | |
| CN102320583B (zh) | 一种利用白云石回收城市污泥厌氧消化液中磷的方法 | |
| CN102115234A (zh) | 一种赤泥除磷絮凝剂制备方法 | |
| CN102942237A (zh) | 一种可同步去除废水中氨氮、磷的净水剂制备方法 | |
| CN110467168A (zh) | 一种磷石膏中可溶性磷的回收方法 | |
| Wu et al. | Phosphorus recovery from waste activated sludge by sponge iron seeded crystallization of vivianite and process optimization with response surface methodology | |
| CN113651438A (zh) | 一种从污泥或底泥中回收磷的方法 | |
| CN101585522B (zh) | 一种从城市污泥厌氧消化液中回收磷的方法 | |
| CN104944561B (zh) | 一种基于菱镁石的废水脱氮除磷方法 | |
| Wang et al. | Vivianite recovery from high concentration phosphorus wastewater with mine drainage as iron sources | |
| CN101811687A (zh) | 磷酸铵镁结晶法回收、去除尿液中氮磷的方法 | |
| CN108101185B (zh) | 一种含钼除磷剂及其应用 | |
| Tang et al. | Prospect of recovering phosphorus in magnesium slag-packed wetland filter | |
| CN100393636C (zh) | 一种处理高浓度含磷废水的方法 | |
| CN112279227A (zh) | 一种用于胶磷矿且无尾矿产生的化学脱镁方法 | |
| Liu et al. | Resource recycling of Mn-rich sludge: effective separation of impure Fe/Al and recovery of high-purity hausmannite |
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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120118 Assignee: NANJING SHUISI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000402 Denomination of invention: Method for recycling phosphorus from urban sludge anaerobic digestive fluid by utilizing dolomite Granted publication date: 20130403 License type: Common License Record date: 20181218 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20120118 Assignee: Zhenjiangnan Zhimo Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000132 Denomination of invention: Method for recycling phosphorus from urban sludge anaerobic digestive fluid by utilizing dolomite Granted publication date: 20130403 License type: Common License Record date: 20191018 Application publication date: 20120118 Assignee: Nanjing Chunsheng Environmental Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000131 Denomination of invention: Method for recycling phosphorus from urban sludge anaerobic digestive fluid by utilizing dolomite Granted publication date: 20130403 License type: Common License Record date: 20191018 |
|
| EE01 | Entry into force of recordation of patent licensing contract | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |