CN102976834B - 一种利用剩余污泥制备有机-无机复混肥料的方法 - Google Patents
一种利用剩余污泥制备有机-无机复混肥料的方法 Download PDFInfo
- Publication number
- CN102976834B CN102976834B CN201210565429.6A CN201210565429A CN102976834B CN 102976834 B CN102976834 B CN 102976834B CN 201210565429 A CN201210565429 A CN 201210565429A CN 102976834 B CN102976834 B CN 102976834B
- Authority
- CN
- China
- Prior art keywords
- organic
- excess sludge
- inorganic complex
- complex fertilizer
- concentration
- 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.)
- Expired - Fee Related
Links
- 239000003337 fertilizer Substances 0.000 title claims abstract description 74
- 239000010802 sludge Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910010272 inorganic material Inorganic materials 0.000 title abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 75
- 239000007788 liquid Substances 0.000 claims description 56
- 229910021432 inorganic complex Inorganic materials 0.000 claims description 54
- 239000006228 supernatant Substances 0.000 claims description 36
- 239000012530 fluid Substances 0.000 claims description 35
- 238000004090 dissolution Methods 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 18
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 claims description 18
- 229910001424 calcium ion Inorganic materials 0.000 claims description 18
- 229910001425 magnesium ion Inorganic materials 0.000 claims description 18
- LWNCNSOPVUCKJL-UHFFFAOYSA-N [Mg].[P] Chemical compound [Mg].[P] LWNCNSOPVUCKJL-UHFFFAOYSA-N 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 10
- 239000013049 sediment Substances 0.000 claims description 6
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 230000003203 everyday effect Effects 0.000 claims description 3
- 230000020477 pH reduction Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 29
- 239000004021 humic acid Substances 0.000 abstract description 24
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 23
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 23
- 239000011574 phosphorus Substances 0.000 abstract description 23
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 14
- 239000010459 dolomite Substances 0.000 abstract description 6
- 229910000514 dolomite Inorganic materials 0.000 abstract description 6
- 235000015097 nutrients Nutrition 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010452 phosphate Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract 4
- 239000002244 precipitate Substances 0.000 abstract 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 2
- 239000011777 magnesium Substances 0.000 abstract 2
- 229910052749 magnesium Inorganic materials 0.000 abstract 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 1
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 28
- 238000004458 analytical method Methods 0.000 description 21
- 229910001385 heavy metal Inorganic materials 0.000 description 20
- 235000021049 nutrient content Nutrition 0.000 description 19
- 239000000194 fatty acid Substances 0.000 description 16
- 235000014113 dietary fatty acids Nutrition 0.000 description 15
- 229930195729 fatty acid Natural products 0.000 description 15
- 150000004665 fatty acids Chemical class 0.000 description 15
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 10
- 238000009264 composting Methods 0.000 description 9
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 8
- 230000000050 nutritive effect Effects 0.000 description 7
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000002361 compost Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 description 3
- 239000006012 monoammonium phosphate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- WZLMXYBCAZZIRQ-UHFFFAOYSA-N [N].[P].[K] Chemical compound [N].[P].[K] WZLMXYBCAZZIRQ-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000002798 spectrophotometry method Methods 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- WYWFMUBFNXLFJK-UHFFFAOYSA-N [Mo].[Sb] Chemical compound [Mo].[Sb] WYWFMUBFNXLFJK-UHFFFAOYSA-N 0.000 description 1
- 238000010564 aerobic fermentation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- MXZRMHIULZDAKC-UHFFFAOYSA-L ammonium magnesium phosphate Chemical compound [NH4+].[Mg+2].[O-]P([O-])([O-])=O MXZRMHIULZDAKC-UHFFFAOYSA-L 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical group [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052567 struvite Inorganic materials 0.000 description 1
- 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 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
Description
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210565429.6A CN102976834B (zh) | 2012-12-24 | 2012-12-24 | 一种利用剩余污泥制备有机-无机复混肥料的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210565429.6A CN102976834B (zh) | 2012-12-24 | 2012-12-24 | 一种利用剩余污泥制备有机-无机复混肥料的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102976834A CN102976834A (zh) | 2013-03-20 |
CN102976834B true CN102976834B (zh) | 2014-07-23 |
Family
ID=47851242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210565429.6A Expired - Fee Related CN102976834B (zh) | 2012-12-24 | 2012-12-24 | 一种利用剩余污泥制备有机-无机复混肥料的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102976834B (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104628484B (zh) * | 2015-02-13 | 2017-05-24 | 郑州光亚环发适用技术研究所 | 一种由污泥制备生态肥料的方法 |
CN106830985B (zh) * | 2017-02-28 | 2021-03-16 | 沈阳理工大学 | 一种利用畜禽粪便制备缓释槽和肥水液的方法 |
CN106927790B (zh) * | 2017-02-28 | 2021-03-16 | 沈阳理工大学 | 一种利用污泥制备无土栽培用陶粒和营养液的方法 |
CN107056236B (zh) * | 2017-02-28 | 2021-03-16 | 沈阳理工大学 | 一种利用污泥制备空气净化功能陶瓷砖和复合肥的方法 |
CN106927791B (zh) * | 2017-02-28 | 2021-03-16 | 沈阳理工大学 | 一种利用剩余污泥制备肥水液和缓释槽的方法 |
CN107253882A (zh) * | 2017-07-13 | 2017-10-17 | 山东聊城鲁西硝基复肥有限公司 | 一种用于水稻生长期的液体肥及制备方法 |
CN110028974A (zh) * | 2019-05-09 | 2019-07-19 | 湖南联和环保科技有限公司 | 一种重金属镉污染土壤修复钝化剂、制备方法及其应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101037354A (zh) * | 2007-03-05 | 2007-09-19 | 清华大学 | 利用有机污泥生产液态有机肥的方法 |
CN101070217A (zh) * | 2007-06-14 | 2007-11-14 | 同济大学 | 一种资源化利用污泥有机物提高污水增强生物除磷效果的方法 |
CN101962302A (zh) * | 2010-08-20 | 2011-02-02 | 长沙达华污泥处理科技有限公司 | 一种用污水处理剩余污泥制备有机肥的方法 |
-
2012
- 2012-12-24 CN CN201210565429.6A patent/CN102976834B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101037354A (zh) * | 2007-03-05 | 2007-09-19 | 清华大学 | 利用有机污泥生产液态有机肥的方法 |
CN101070217A (zh) * | 2007-06-14 | 2007-11-14 | 同济大学 | 一种资源化利用污泥有机物提高污水增强生物除磷效果的方法 |
CN101962302A (zh) * | 2010-08-20 | 2011-02-02 | 长沙达华污泥处理科技有限公司 | 一种用污水处理剩余污泥制备有机肥的方法 |
Non-Patent Citations (2)
Title |
---|
利用白云石回收污泥厌氧消化液中的磷;梅翔;《环境工程学报》;20121130;第6卷(第11期);3809-3816 * |
梅翔.利用白云石回收污泥厌氧消化液中的磷.《环境工程学报》.2012,第6卷(第11期),3809-3816. |
Also Published As
Publication number | Publication date |
---|---|
CN102976834A (zh) | 2013-03-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102976834B (zh) | 一种利用剩余污泥制备有机-无机复混肥料的方法 | |
Wu et al. | Potentials and challenges of phosphorus recovery as vivianite from wastewater: A review | |
Wang et al. | Selection of cost-effective magnesium sources for fluidized struvite crystallization | |
Darwish et al. | Ammonium-nitrogen recovery from wastewater by struvite crystallization technology | |
Kwon et al. | Recovery of ammonia through struvite production using anaerobic digestate of piggery wastewater and leachate of sewage sludge ash | |
US20210363039A1 (en) | Preparation Method and Application of External Carbon Source by Denitrification from Lake Algae | |
CN103641283A (zh) | 一种经济的从剩余污泥中回收磷的方法 | |
CN101993169A (zh) | 一种烧结烟气脱硫废水的处理方法 | |
CN102229506B (zh) | 从尿液污水中回收磷钾并制造缓释型磷钾复合肥的方法 | |
Ren et al. | A cost-effective method for the treatment of reject water from sludge dewatering process using supernatant from sludge lime stabilization | |
CN103086754A (zh) | 一种利用味精废液制备全营养高氮型液体冲施肥的方法及产品 | |
Carballa et al. | Strategies to optimize phosphate removal from industrial anaerobic effluents by magnesium ammonium phosphate (MAP) production | |
CN101439897A (zh) | 一种污水磷回收复合絮凝剂的制备和磷回收工艺 | |
CN1328183C (zh) | 从污水中同时回收氮磷的方法 | |
EP3532451A1 (en) | Method and composition for retaining nutrients in soil at planting sites | |
Liu et al. | Valorization of citric acid production wastewater as alternative carbon source for biological nutrients removal: A pilot-scale case study | |
Chen et al. | Impact of impurities on vivianite crystallization for phosphate recovery from process water of hydrothermal carbonization of kitchen waste | |
Cheng et al. | Towards advanced simultaneous nitrogen removal and phosphorus recovery from digestion effluent based on anammox-hydroxyapatite (HAP) process: Focusing on a solution perspective | |
CN1321073C (zh) | 一种生态安全型天然复配絮凝剂及其制备和使用方法 | |
CN103601896B (zh) | 一种复合提取剂及从污水污泥中提取与分离腐殖质的方法 | |
CN103663873A (zh) | 一种水质净化方法 | |
CN109912076A (zh) | 一种组合式废水高效除磷的处理方法 | |
CN102874784A (zh) | 利用海水淡化浓缩海水沉淀回收污水中氮磷的方法 | |
CN101628835A (zh) | 一种利用味精废液制备绿化用营养基质添加剂的方法 | |
CN103332988A (zh) | 非矿物源腐植酸水溶性液体肥料及其制备方法 |
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: 20130320 Assignee: NANJING SHUISI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000133 Denomination of invention: Method for preparing organic-inorganic compound fertilizer through excess sludge Granted publication date: 20140723 License type: Common License Record date: 20191018 Application publication date: 20130320 Assignee: Zhenjiangnan Zhimo Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000132 Denomination of invention: Method for preparing organic-inorganic compound fertilizer through excess sludge Granted publication date: 20140723 License type: Common License Record date: 20191018 Application publication date: 20130320 Assignee: Nanjing Chunsheng Environmental Technology Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: X2019320000131 Denomination of invention: Method for preparing organic-inorganic compound fertilizer through excess sludge Granted publication date: 20140723 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: 20140723 |
|
CF01 | Termination of patent right due to non-payment of annual fee |