CN101555053A - Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method - Google Patents
Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method Download PDFInfo
- Publication number
- CN101555053A CN101555053A CNA2008100273450A CN200810027345A CN101555053A CN 101555053 A CN101555053 A CN 101555053A CN A2008100273450 A CNA2008100273450 A CN A2008100273450A CN 200810027345 A CN200810027345 A CN 200810027345A CN 101555053 A CN101555053 A CN 101555053A
- Authority
- CN
- China
- Prior art keywords
- waste water
- wastewater
- compound coagulant
- highly concentrated
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and a treatment method, belonging to the technical field of chemical environment protection and resource recovery. The compound coagulant is a mixed liquor of ammonium oxalate, ammonium sulphate, heavy metal precipitator DTCR and polyacrylamide (PAM). The treatment method for treating wastewater by using the compound coagulant comprises the following steps: firstly, oil substances in the wastewater are removed through a separation tank and an air floating chamber; secondly, the wastewater enters a pH adjusting precipitation tank to adjust the pH value to be 7.5-8.5; thirdly, the wastewater enters a coagulative precipitation tank, the compound coagulant is added, the wastewater after being coagulated and precipitated enters the pH adjusting precipitation tank to adjust the pH value to be 2.5-4, the wastewater after being adjusted the pH value enters an active carbon filter tower to be absorbed and filtered and then is evaporated and concentrated under the condition of negative pressure. The compound coagulant has simple treatment method, low cost and good effect. The treatment method has short process and simple and easy treatment, not only solves the problem of the pollution of the highly concentrated ammonian wastewater, but also achieves the purpose of recovering valuable materials.
Description
Technical field
The present invention relates to a kind of coagulating agent and treatment process that can be used for handling rare-earth highly concentrated ammonia nitrogen waste water recovery industrial grade ammonium chloride, belong to chemical industry environmental protection and resource recovery technology field.
Background technology
Rare-earth wet method is smelted and is adopted extraction process to carry out each component separation, this technology need have a large amount of alkali lye to participate in reaction, consider the production cost problem, present most enterprise all adopts ammoniacal liquor to carry out saponification, and the waste water that is produced will be if not treated direct discharging will bring extremely serious ammonia and nitrogen pollution to the water body that is entered.The ammonia nitrogen waste water of high density is the emphasis and the difficult point of rare-earth smelting business processes, at present more at the treatment process of such waste water, at home and abroad present stage can be used to handle the ripe of ammonia nitrogen waste water and is in the technology and the method in research and development stage and mainly contains: evaporative crystallization method, reverse osmosis desalination, electrodialysis, soil irrigation; Kinds more than ten such as air stripping (or steam stripping), chemical precipitation method, breakpoint chlorination, emulsion film adsorption method of separation, absorption, ion exchange method, senior catalytic oxidation, hypergravity denitrogenation, biochemical treatment process, but can really be used for having only of industrial application very few several.
Because the wastewater property difference of different process section discharging is big in the rare-earth smelting, it is low that ammonia nitrogen concentration has height to have.According to ammonia nitrogen in waste water concentration, can be divided into three kinds of different concns waste water: greater than the intermediate concentration ammonia nitrogen waste water of the high-concentration ammonia nitrogenous wastewater (rare earth soap waste water, carbon ammonium precipitation mother liquor) of 10000mg/L, 500-10000mg/L with less than the low-concentration ammonia-nitrogen waste water of 500mg/L.It is the most economically viable adopting the evaporative crystallization method for the ammonia nitrogen waste water greater than the 10000mg/L high density, and water treatment at home and abroad of evaporative crystallization method and chemical industry are widely applied, and technology maturation is reliable.
Adopt the evaporative crystallization method to reclaim ammonium salt (ammonium chloride), can offset the equipment working cost, but owing to oils and extraction agent in the waste water, other foreign matter contents such as heavy metal are many, evaporative crystallization after adopting traditional hydro-oxidation sodium as precipitation agent removal heavy metal, though can remove most of heavy metal, but also introduced sodium simultaneously, reduced product purity, the quality and the sale of reclaiming ammonium salt product have been had a strong impact on, if adopt the ammoniacal liquor neutralization because the pH value can only be adjusted to 9~10 at most, counterweight metal impurities poor removal effect, the product that reclaims preferably can only be accomplished agricultural rank, and the agricultural grade ammonium chloride price of selling on the market only be technical grade half, therefore impurity in the reduction waste water in preprocessing process how, making and can be recovered to industrial grade ammonium chloride behind evaporative crystallization will be the treatment process that has economic benefit.
Summary of the invention
An object of the present invention is to provide a kind of compound coagulant of removing impurity such as heavy metal in the rare-earth highly concentrated ammonia nitrogen waste water.
Another object of the present invention provides a kind of this compound coagulant that uses and handles the treatment process that rare-earth highly concentrated ammonia nitrogen waste water reclaims industrial grade ammonium chloride, has not only reached the purpose of processing waste water but also reclaimed valuable resource.
Purpose of the present invention is achieved by the following technical solutions: compound coagulant is the mixed solution of ammonium oxalate, ammonium sulfate, heavy metal precipitator DTCR and polyacrylamide (PAM).By four kinds of medicament weight proportions promptly: it is soluble in water that ammonium oxalate: ammonium sulfate: DTCR: PAM=0.6~3: 0.4~1.5: 1: 0.01~0.03 takes by weighing medicament, mixing and stirring then is mixed with four kinds of medicament total mass concentrations and is 3.5%~10% mixed solution.Contain more oils and extraction agent in the rare-earth highly concentrated ammonia nitrogen waste water, heavy metal element and calcium ion, use this compound coagulant to handle waste water, ammonium oxalate provides the calcium ion in the oxalate denominationby precipitation waste water, ammonium sulfate provides sulfate ion to remove the barium ion in the waste water, the powerful chelating of DTCR and heavy metal ion, generate insolubles, can form good flocculation, so that sedimentation is quick, reach the purpose of removing heavy metal ion, polyacrylamide forms " bridging " between the particle that is adsorbed, generate bigger floc sedimentation, helps effectively adsorb organic compound of particulate sinking and energy.
Do not bring other impurity into for making when handling waste water, the heavy metal precipitator DTCR in the compound coagulant among the present invention is: chelate group-NH-CSSNH
4Pattern.
Use the treatment process and the step of compound coagulant processing waste water reclamation industrial grade ammonium chloride as follows:
A, rare-earth highly concentrated ammonia nitrogen waste water at first enter oil trap, make that the bigger oil droplet of particle rises to the surface in oil slick in the RE waste water and the dispersed oil, by the Oil scraper frizing to reach the purpose of removing oil slick, waste water enters gas-floating chamber then, by oil in water emulsion and the trickle suspended solid of hydrophobicity in the air supporting removal waste water.
B, the waste water after oil removing enter the pH regulator settling tank, and adding concentration then and be 25%~30% strong aqua in waste water, to regulate pH be 7.5~8.5, again to every m
3Add 1~2g PAM stirring reaction, 10~15min in the waste water, leave standstill 35~50min, the shore pipe of the mud of generation at the bottom of the pond discharged, and supernatant liquor and mud filtrate enter coagulative precipitation tank.
C, in the coagulative precipitation tank by every m
3Add 3~15L compound coagulant in the waste water, stir 5~10min fast, leave standstill 30~40min after stirring 10~15min at a slow speed then, the shore pipe of the mud that produces at the bottom of the pond discharged, supernatant liquor and mud filtrate enter the pH regulator pond, and adding mass concentration then and be 30%~38% concentrated hydrochloric acid in waste water, to regulate pH be 2.5~4.
D, the waste water after regulating pH enter active carbon filter tower again, and the control filtering velocity is 3~5m/h, and heavy metal and the micro-oily substance of remnants enter evaporating and crystallizing tower evaporation concentration under condition of negative pressure again through the waste water after the activated carbon treatment in absorption and the filtered wastewater.
Beneficial effect of the present invention:
The compound coagulant treatment process of using among a, the present invention is simple, expense is low, can accomplish under the situation of contents of many kinds of heavy metal ion coexistence after primary treatment, to make various heavy metal ions in waste water and calcium ion reach denier, though to the salt of heavy metal complexing (as NH
3) also can play one's part to the full, and have that flocs unit is thick, precipitation is fast, dehydration is fast, aftertreatment is easy, sludge quantity is few and it is nontoxic to stablize, do not bring other impurity into, do not have characteristics such as secondary public hazards to waste water.
Treatment process technical process among b, the present invention is short, handle simple, waste water after this method is handled is after the ammonium chloride that evaporative crystallization reclaims can reach the technical grade qualified product, obtain great economic profit with less cost, not only solved the high-concentration ammonia nitrogenous wastewater pollution problems, simultaneously also reclaim valuable substance, realized high economic benefit and environmental benefit.
Description of drawings
Fig. 1 is to use the compound coagulant among the present invention to handle the schematic flow sheet that rare-earth highly concentrated ammonia nitrogen waste water reclaims the treatment process of industrial grade ammonium chloride.
Embodiment
Further describe technical scheme of the present invention below in conjunction with embodiment, protection scope of the present invention is not limited to following embodiment.
Compound coagulant embodiment is as follows:
Embodiment 1
Take by weighing 600g gram ammonium oxalate, 200g ammonium sulfate, 200g heavy metal precipitator DTCR and 3g PAM respectively, be dissolved in successively then in the 13L water, the preparation total mass concentration is 7.1% compound coagulant after constantly mixing.
Embodiment 2
Take by weighing 450g gram ammonium oxalate, 150g ammonium sulfate, 200g heavy metal precipitator DTCR and 2g PAM respectively, be dissolved in successively then in the 13L water, the preparation total mass concentration is 5.8% compound coagulant after constantly mixing.
Using compound coagulant to handle rare-earth highly concentrated ammonia nitrogen waste water, to reclaim the embodiment of treatment process of industrial grade ammonium chloride as follows:
Compound coagulant numbering to above-mentioned two application examples make is followed successively by No. 1 compound coagulant, No. 2 compound coagulants, and sewage is handled.Waste water is taken from rare earth soap waste water and the carbon ammonium precipitation mother liquor in certain rare-earth smelting factory, and its water quality characteristics is as follows:
Table 1 rare earth soap waste water quality (pH=0.47, [Cl
-]=96800mg/L, unit are mg/L)
NH 4 + | Oils | Ca 2+ | Na + | Al 3+ | Mn 2+ | Cu 2+ | Zn 2+ | pb 2+ | Ba 2+ | Cr 3+ | Ni 2+ |
48050 | 1580.5 | 200 | 42 | 56.3 | 24 | 3.7 | 17 | 67.8 | 242 | 1.6 | 2.1 |
Table 2 carbon ammonium precipitation mother liquor water quality (pH=6.47, [Cl
-]=27730mg/L, unit are mg/L)
NH 4 + | Oils | Ca 2+ | Na + | Al 3+ | Mn 2+ | Cu 2+ | Zn 2+ | Pb 2+ | Ba 2+ | Cr 3+ | Ni 2+ |
13152 | 80.5 | 0.3 | 18.6 | 16.3 | 0.5 | 2.7 | 36 | 0.18 | 0.9 | 2.1 | 2 |
Embodiment 3
A, get 1m
3Rare earth soap waste water at first enters the inclined plate grease pond, retention time of sewage is 2.5h, make that the bigger oil droplet of particle rises to the surface in oil slick in the RE waste water and the dispersed oil, wipe the upper strata oil slick off, waste water enters the jetting type gas-floating chamber then, remove oil in water emulsion and the trickle suspended solid of hydrophobicity in the waste water by air supporting, this step is handled back oils and extraction agent content is 80mg/L.
B, the waste water after oil removing enter the pH regulator settling tank, adding 16L concentration then and be 30% strong aqua in waste water, to regulate pH be 8, in waste water, add 1.5g PAM stirring reaction 15min again, leave standstill 40min, the shore pipe of the mud that produces at the bottom of the pond discharged, and supernatant liquor and mud filtrate enter coagulative precipitation tank.
C, add No. 1 compound coagulant of 13L in the coagulative precipitation tank, stir 10min fast, leave standstill 40min after stirring 15min at a slow speed then, the shore pipe of the mud that produces at the bottom of the pond discharged, supernatant liquor and mud filtrate enter the pH regulator pond, and adding the 7L mass concentration then and be 35% concentrated hydrochloric acid in waste water, to regulate pH be 3.
D, the waste water after regulating pH enter active carbon filter tower again, and the control filtering velocity is 3m/h, and heavy metal and the micro-oily substance of remnants enter evaporating and crystallizing tower evaporation concentration under condition of negative pressure again through the waste water after the activated carbon treatment in absorption and the filtered wastewater.Gained distilled water ammonia nitrogen concentration is 13.5mg/L, and gained ammonium chloride amount is 150kg, and quality sees Table 3.
Table 3 gained ammonium chloride analytical data
The industrial grade ammonium chloride index name | Acceptable end product | Salable product | Gained ammonium chloride |
Ammonium chloride (NH 4Cl) content (in butt), %, 〉= | 99.3 | 99.0 | 99.1 |
Moisture, % ,≤ | 0.7 | 1.0 | - |
Ignition residue, % ,≤ | 0.4 | 0.4 | 0.38 |
Iron (Fe) content, % ,≤ | 0.001 | 0.003 | 0.0025 |
Heavy metal (in Pb) content, % ,≤ | 0.0005 | 0.001 | 0.0008 |
Vitriol is (with SO 4) content, % ,≤ | 0.02 | - | 0.01 |
PH value (200g/L solution, 25 ℃ of temperature) | 4.0~5.8 | 4.0~5.8 | 4.9 |
Embodiment 4
A, press actual waste water amount (4: 1) the preparation 1m of rare earth soap waste water and carbon ammonium precipitation mother liquor
3Composite waste at first enters the inclined plate grease pond, retention time of sewage is 2.5h, make that the bigger oil droplet of particle rises to the surface in oil slick in the waste water and the dispersed oil, wipe the upper strata oil slick off, waste water enters the jetting type gas-floating chamber then, remove oil in water emulsion and the trickle suspended solid of hydrophobicity in the waste water by air supporting, this step is handled back oils and extraction agent content is 73mg/L.
B, the waste water after oil removing enter the pH regulator settling tank, adding 13L concentration then and be 30% strong aqua in waste water, to regulate pH be 8.05, in waste water, add 1.5g PAM stirring reaction 15min again, leave standstill 40min, the shore pipe of the mud that produces at the bottom of the pond discharged, and supernatant liquor and mud filtrate enter coagulative precipitation tank.
C, add No. 2 compound coagulants of 13L in the coagulative precipitation tank, stir 10min fast, leave standstill 40min after stirring 15min at a slow speed then, the shore pipe of the mud that produces at the bottom of the pond discharged, supernatant liquor and mud filtrate enter the pH regulator pond, and adding the 5.7L mass concentration then and be 35% concentrated hydrochloric acid in waste water, to regulate pH be 3.1.
D, the waste water after regulating pH enter active carbon filter tower again, and the control filtering velocity is 3m/h, and heavy metal and the micro-oily substance of remnants enter evaporating and crystallizing tower evaporation concentration under condition of negative pressure again through the waste water after the activated carbon treatment in absorption and the filtered wastewater.Gained distilled water ammonia nitrogen concentration is 10.5mg/L, and gained ammonium chloride amount is 135kg, and quality sees Table 4.
Table 4 gained ammonium chloride analytical data
The industrial grade ammonium chloride index name | Acceptable end product | Salable product | Gained ammonium chloride |
Ammonium chloride (NH 4Cl) content (in butt), %, 〉= | 99.3 | 99.0 | 99.2 |
Moisture, % ,≤ | 0.7 | 1.0 | - |
Ignition residue, % ,≤ | 0.4 | 0.4 | 0.35 |
Iron (Fe) content, % ,≤ | 0.001 | 0.003 | 0.0015 |
Heavy metal (in Pb) content, % ,≤ | 0.0005 | 0.001 | 0.0008 |
Vitriol is (with SO 4) content, % ,≤ | 0.02 | - | 0.02 |
PH value (200g/L solution, 25 ℃ of temperature) | 4.0~5.8 | 4.0~5.8 | 4.3 |
Claims (3)
1, a kind of compound coagulant that can be used for handling rare-earth highly concentrated ammonia nitrogen waste water recovery industrial grade ammonium chloride, it is characterized in that: this compound coagulant is the mixed solution of ammonium oxalate, ammonium sulfate, heavy metal precipitator DTCR and polyacrylamide (PAM), by four kinds of medicament weight proportions promptly: it is soluble in water that ammonium oxalate: ammonium sulfate: DTCR: PAM=0.6~3: 0.4~1.5: 1: 0.01~0.03 takes by weighing medicament, mixing and stirring then is mixed with four kinds of medicament total mass concentrations and is 3.5%~10% mixed solution.
2, a kind of described compound coagulant of claim 1 that uses is handled the treatment process that rare-earth highly concentrated ammonia nitrogen waste water reclaims industrial grade ammonium chloride, it is characterized in that:
A, rare-earth highly concentrated ammonia nitrogen waste water at first enter oil trap, make that the bigger oil droplet of particle rises to the surface in oil slick in the RE waste water and the dispersed oil, by the Oil scraper frizing to reach the purpose of removing oil slick, waste water enters gas-floating chamber then, by oil in water emulsion and the trickle suspended solid of hydrophobicity in the air supporting removal waste water.
B, the waste water after oil removing enter the pH regulator settling tank, and adding concentration then and be 25%~30% strong aqua in waste water, to regulate pH be 7.5~8.5, again to every m
3Add 1~2g PAM stirring reaction, 10~15min in the waste water, leave standstill 35~50min, the shore pipe of the mud of generation at the bottom of the pond discharged, and supernatant liquor and mud filtrate enter coagulative precipitation tank.
C, in the coagulative precipitation tank by every m
3Add 3~15L compound coagulant in the waste water, stir 5~10min fast, leave standstill 30~40min after stirring 10~15min at a slow speed then, the shore pipe of the mud that produces at the bottom of the pond discharged, supernatant liquor and mud filtrate enter the pH regulator pond, and adding mass concentration then and be 30%~38% concentrated hydrochloric acid in waste water, to regulate pH be 2.5~4.
D, the waste water after regulating pH enter active carbon filter tower again, and the control filtering velocity is 3~5m/h, and heavy metal and the micro-oily substance of remnants enter evaporating and crystallizing tower evaporation concentration under condition of negative pressure again through the waste water after the activated carbon treatment in absorption and the filtered wastewater.
3, according to claim 1 being used to handled the compound coagulant that rare-earth highly concentrated ammonia nitrogen waste water reclaims industrial grade ammonium chloride, and it is characterized in that: the heavy metal precipitator DTCR in the compound coagulant is: chelate group-NH-CSSNH
4Pattern.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008100273450A CN101555053B (en) | 2008-04-11 | 2008-04-11 | Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2008100273450A CN101555053B (en) | 2008-04-11 | 2008-04-11 | Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method |
Publications (2)
Publication Number | Publication Date |
---|---|
CN101555053A true CN101555053A (en) | 2009-10-14 |
CN101555053B CN101555053B (en) | 2011-02-09 |
Family
ID=41173364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2008100273450A Expired - Fee Related CN101555053B (en) | 2008-04-11 | 2008-04-11 | Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN101555053B (en) |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102260002A (en) * | 2011-07-22 | 2011-11-30 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling rare earth wastewater containing high-concentration sodium chloride and ammonium chloride |
CN102260000A (en) * | 2011-07-22 | 2011-11-30 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling ammonium chloride rare earth wastewater |
CN102079601B (en) * | 2009-11-30 | 2012-06-27 | 中国科学院广州地球化学研究所 | Resource recovery and zero discharge process for treating rare-earth wet-method smelting wastewater |
CN102923896A (en) * | 2012-11-07 | 2013-02-13 | 天津大学 | Deaminizing method and device for high-concentration ammonia-containing waste water |
CN102951755A (en) * | 2012-11-23 | 2013-03-06 | 南京格洛特环境工程有限公司 | Processing method and processing equipment of rear earth wastewater |
CN102989402A (en) * | 2011-09-13 | 2013-03-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for reducing concentration of calcium ions in calcium-containing solution |
CN103351048A (en) * | 2012-11-22 | 2013-10-16 | 中节能六合天融环保科技有限公司 | Organic composite reagent for removing calcium ions in manganese-containing wastewater |
CN103466820A (en) * | 2013-09-06 | 2013-12-25 | 中铝稀土(常熟)有限公司 | Wastewater treatment device for rare-earth preparation |
CN104193071A (en) * | 2014-09-27 | 2014-12-10 | 安徽金禾实业股份有限公司 | Treating method of high-ammonia-nitrogen mother liquor wastewater in MCP (methyl cyclopentenolone) production |
CN104291532A (en) * | 2014-10-27 | 2015-01-21 | 南京格洛特环境工程股份有限公司 | Treatment method and equipment of beta-naphthol production wastewater |
CN106148694A (en) * | 2016-06-28 | 2016-11-23 | 中铝广西国盛稀土开发有限公司 | The processing method of rare earth oxalate precipitate mother solution |
CN106396163A (en) * | 2015-08-12 | 2017-02-15 | 江苏沃德凯环保科技有限公司 | Method for comprehensive treatment and recycling of ammonium sulfate wastewater of rare-earth smelting |
CN106904784A (en) * | 2017-05-05 | 2017-06-30 | 北京中科康仑环境科技研究院有限公司 | A kind of recycling treatment process of rare earth soda soap raffinate |
CN107043192A (en) * | 2017-05-05 | 2017-08-15 | 北京中科康仑环境科技研究院有限公司 | A kind of integrated conduct method of Rare-earth Ammonia soap raffinate |
CN109761412A (en) * | 2018-12-19 | 2019-05-17 | 中国科学院广州地球化学研究所 | The electrolysis treatment process and device of low content organic pollutant in a kind of high salinity rare-earth wet method smelting wastewater |
CN109867399A (en) * | 2017-12-04 | 2019-06-11 | 北京沃特普特环境科技有限公司 | A kind of gas field wastewater desulfurization desalting processing system and method containing surfactant |
CN110156217A (en) * | 2018-02-14 | 2019-08-23 | 中铝稀土(宜兴)有限公司 | A kind of processing method of rare earth processing waste water |
CN113045064A (en) * | 2021-03-17 | 2021-06-29 | 赣州齐畅新材料有限公司 | Method for treating rare earth processing wastewater |
CN113072230A (en) * | 2021-03-26 | 2021-07-06 | 鹰潭市林兴建材有限公司 | Heavy metal wastewater treatment method for aluminum product production |
CN114835328A (en) * | 2022-05-31 | 2022-08-02 | 广州市心德实业有限公司 | Rare earth extraction separation wastewater treatment method |
CN115057552A (en) * | 2022-06-23 | 2022-09-16 | 先导薄膜材料有限公司 | Concentration method of low-concentration ammonium nitrate wastewater |
-
2008
- 2008-04-11 CN CN2008100273450A patent/CN101555053B/en not_active Expired - Fee Related
Cited By (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102079601B (en) * | 2009-11-30 | 2012-06-27 | 中国科学院广州地球化学研究所 | Resource recovery and zero discharge process for treating rare-earth wet-method smelting wastewater |
CN102260002A (en) * | 2011-07-22 | 2011-11-30 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling rare earth wastewater containing high-concentration sodium chloride and ammonium chloride |
CN102260000A (en) * | 2011-07-22 | 2011-11-30 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling ammonium chloride rare earth wastewater |
CN102260000B (en) * | 2011-07-22 | 2012-12-12 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling ammonium chloride rare earth wastewater |
CN102260002B (en) * | 2011-07-22 | 2013-01-30 | 内蒙古介电电泳应用技术研究院 | Process for treating and recycling rare earth wastewater containing high-concentration sodium chloride and ammonium chloride |
CN102989402B (en) * | 2011-09-13 | 2015-07-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for reducing concentration of calcium ions in calcium-containing solution |
CN102989402A (en) * | 2011-09-13 | 2013-03-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for reducing concentration of calcium ions in calcium-containing solution |
CN102923896A (en) * | 2012-11-07 | 2013-02-13 | 天津大学 | Deaminizing method and device for high-concentration ammonia-containing waste water |
CN103351048A (en) * | 2012-11-22 | 2013-10-16 | 中节能六合天融环保科技有限公司 | Organic composite reagent for removing calcium ions in manganese-containing wastewater |
CN102951755A (en) * | 2012-11-23 | 2013-03-06 | 南京格洛特环境工程有限公司 | Processing method and processing equipment of rear earth wastewater |
CN103466820B (en) * | 2013-09-06 | 2014-10-01 | 中铝稀土(常熟)有限公司 | Wastewater treatment device for rare-earth preparation |
CN103466820A (en) * | 2013-09-06 | 2013-12-25 | 中铝稀土(常熟)有限公司 | Wastewater treatment device for rare-earth preparation |
CN104193071A (en) * | 2014-09-27 | 2014-12-10 | 安徽金禾实业股份有限公司 | Treating method of high-ammonia-nitrogen mother liquor wastewater in MCP (methyl cyclopentenolone) production |
CN104291532B (en) * | 2014-10-27 | 2016-03-23 | 南京格洛特环境工程股份有限公司 | A kind of 2-Naphthol production wastewater treatment method and apparatus |
CN104291532A (en) * | 2014-10-27 | 2015-01-21 | 南京格洛特环境工程股份有限公司 | Treatment method and equipment of beta-naphthol production wastewater |
CN106396163A (en) * | 2015-08-12 | 2017-02-15 | 江苏沃德凯环保科技有限公司 | Method for comprehensive treatment and recycling of ammonium sulfate wastewater of rare-earth smelting |
CN106396163B (en) * | 2015-08-12 | 2018-06-19 | 江苏沃德凯环保科技有限公司 | A kind of method of rare-earth smelting amine wastewater of sulphuric acid comprehensive treatment reuse |
CN106148694A (en) * | 2016-06-28 | 2016-11-23 | 中铝广西国盛稀土开发有限公司 | The processing method of rare earth oxalate precipitate mother solution |
CN106904784A (en) * | 2017-05-05 | 2017-06-30 | 北京中科康仑环境科技研究院有限公司 | A kind of recycling treatment process of rare earth soda soap raffinate |
CN107043192A (en) * | 2017-05-05 | 2017-08-15 | 北京中科康仑环境科技研究院有限公司 | A kind of integrated conduct method of Rare-earth Ammonia soap raffinate |
CN109867399A (en) * | 2017-12-04 | 2019-06-11 | 北京沃特普特环境科技有限公司 | A kind of gas field wastewater desulfurization desalting processing system and method containing surfactant |
CN109867399B (en) * | 2017-12-04 | 2023-12-19 | 北京沃特普特环境科技有限公司 | Gas field wastewater desulfurization and desalination treatment system and method containing surfactant |
CN110156217B (en) * | 2018-02-14 | 2022-09-27 | 中稀(宜兴)稀土新材料有限公司 | Method for treating rare earth processing wastewater |
CN110156217A (en) * | 2018-02-14 | 2019-08-23 | 中铝稀土(宜兴)有限公司 | A kind of processing method of rare earth processing waste water |
CN109761412A (en) * | 2018-12-19 | 2019-05-17 | 中国科学院广州地球化学研究所 | The electrolysis treatment process and device of low content organic pollutant in a kind of high salinity rare-earth wet method smelting wastewater |
CN113045064A (en) * | 2021-03-17 | 2021-06-29 | 赣州齐畅新材料有限公司 | Method for treating rare earth processing wastewater |
CN113072230A (en) * | 2021-03-26 | 2021-07-06 | 鹰潭市林兴建材有限公司 | Heavy metal wastewater treatment method for aluminum product production |
CN114835328A (en) * | 2022-05-31 | 2022-08-02 | 广州市心德实业有限公司 | Rare earth extraction separation wastewater treatment method |
CN115057552A (en) * | 2022-06-23 | 2022-09-16 | 先导薄膜材料有限公司 | Concentration method of low-concentration ammonium nitrate wastewater |
Also Published As
Publication number | Publication date |
---|---|
CN101555053B (en) | 2011-02-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101555053B (en) | Compound coagulant used for treating rare-earth highly concentrated ammonian wastewater to recover industry ammonium chloride and treatment method | |
CN102079601B (en) | Resource recovery and zero discharge process for treating rare-earth wet-method smelting wastewater | |
CN107188330B (en) | Method for adsorbing and purifying acidic wastewater | |
CN102107978B (en) | Method for resource utilization and innocent treatment of etching waste liquid containing copper in circuit board industry | |
CN102311189B (en) | System for treatment of acid mine drainage and resource recovery of iron, aluminum, copper and zinc in drainage | |
CN102126799B (en) | Method for treating fluorine-containing and ammonia nitrogen-containing waste water in electronic industry | |
CN104386874A (en) | Processing technology for high-concentration waste liquid in circuit board industry | |
CN103813987A (en) | Treatment of phosphate-containing wastewater with fluorosilicate and phosphate recovery | |
CN109336292B (en) | Treatment method of manganese-containing wastewater | |
CN101982433A (en) | Method for harmless and recycling treatment of stainless steel acid washing waste water neutralization sludge | |
CN101428933B (en) | Biological agent cooperated hydrolyzation-blowing off treatment process for nickel-ammonia wastewater | |
CN109761412A (en) | The electrolysis treatment process and device of low content organic pollutant in a kind of high salinity rare-earth wet method smelting wastewater | |
CN103771633A (en) | Electrolytic treatment technology for smelting organic pollutants in waste water through high-salinity rare earth wet method | |
CN106495404A (en) | A kind of processing method of the high salinity cupric organic wastewater of highly acidity | |
CN110590034A (en) | Process treatment method for lithium iron wastewater of lithium battery anode material | |
CN105668754A (en) | Method for removing trace of heavy metal and nonmetal impurities in waste acid cleaning liquor | |
CN111977919A (en) | Method for treating heavy metal polluted bottom mud by utilizing ultrasonic wave-composite acid extraction-chemical precipitation | |
CN102583678A (en) | Method for removing phosphorus from wastewater by using acidic mine wastewater | |
JP2004107780A (en) | Method for recovering and utilizing valuable metal in waste water containing metal | |
CN214141986U (en) | Processing system for reducing and solidifying resource recycling of electrolytic aluminum slag leachate | |
CN115340221A (en) | Deep defluorination treatment process and recycling system | |
CN212425805U (en) | Treatment recycling system for electric demisting wastewater and/or electric precipitation wastewater | |
CN211734103U (en) | Copper ammonia complex effluent disposal system | |
CN204803207U (en) | Professional equipment of materialization mud washing resourceful treatment technology | |
CN110921950A (en) | Electroplating wastewater recycling treatment method |
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 | ||
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20110411 |
|
DD01 | Delivery of document by public notice |
Addressee: Guangzhou Institute of geochemistry, Chinese Academy of Sciences, Huang Haiming Document name: Notification of Termination of Patent Right |