CN100425553C - Hydrazine hydrate byproduct 5% salt water processing and reclamation method - Google Patents
Hydrazine hydrate byproduct 5% salt water processing and reclamation method Download PDFInfo
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- CN100425553C CN100425553C CNB2006101638299A CN200610163829A CN100425553C CN 100425553 C CN100425553 C CN 100425553C CN B2006101638299 A CNB2006101638299 A CN B2006101638299A CN 200610163829 A CN200610163829 A CN 200610163829A CN 100425553 C CN100425553 C CN 100425553C
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- Prior art keywords
- ammonia
- chlorine
- salt solution
- oxidation
- value
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- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 title claims abstract description 17
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000006227 byproduct Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 14
- 150000003839 salts Chemical class 0.000 title abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 46
- 239000000460 chlorine Substances 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 25
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 23
- 229910021529 ammonia Inorganic materials 0.000 claims description 23
- 229910052801 chlorine Inorganic materials 0.000 claims description 23
- 239000012266 salt solution Substances 0.000 claims description 23
- 238000007254 oxidation reaction Methods 0.000 claims description 21
- 230000003647 oxidation Effects 0.000 claims description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 18
- 239000012267 brine Substances 0.000 claims description 17
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 12
- 230000009615 deamination Effects 0.000 claims description 12
- 238000006481 deamination reaction Methods 0.000 claims description 12
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000011780 sodium chloride Substances 0.000 claims description 6
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000003643 Callosities Diseases 0.000 description 1
- 206010020649 Hyperkeratosis Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- QEHKBHWEUPXBCW-UHFFFAOYSA-N nitrogen trichloride Chemical compound ClN(Cl)Cl QEHKBHWEUPXBCW-UHFFFAOYSA-N 0.000 description 1
- -1 pH value Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000015598 salt intake Nutrition 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a recycling method of 5% by-product salt water of hydrazine hydrate in the waste water processing domain, which is characterized by the following: deaminating 5% salt water; oxidizing; draining salt water in the groove; supplying to electrolytic manufacturing system to reuse.
Description
Technical field
The present invention relates to a kind of hydrazine hydrate by-product 5% brine treatment reuse method, belong to field of waste water treatment, particularly the method for recycling after hydrazine hydrate by-product 5% brine treatment.
Background technology
At present, in hydration callosity production field, for hydrazine hydrate by-product 5% salt solution, generally all be it to be emitted or send special water treatment field, this processing 5% brinish method not only exists the problem to water resource waste, but also can affect to environment, has increased processing costs.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can realize 5% salt solution reuse, the hydrazine hydrate by-product 5% brine treatment reuse method of conserve water resource is turned waste into wealth, and has realized that the recirculation of water of productive use is used.
Above-mentioned purpose is achieved in that
In hydrazine hydrate is produced, contain NaCl, SO in the effluent brine of discharging
4 2-, Ca
2+, Mg
2+, inorganic ammonia, total ammonium, H-H, connection nitrogen, HYPO value (Isopropylamine, Virahol, reveal with the available chlorine property list in the analysis, the ORP value shows negative), impurity such as acetone, NaCl wherein will recycle, it is the raw material of salt electrolysis, and inorganic ammonia, total ammonium, H-H, connection nitrogen, HYPO value are detrimental impurity, must dispose, and can produce nitrogen trichloride (NCl otherwise enter electrolytic system
3), will seriously jeopardize the chlor-alkali production security of system.So task of the present invention mainly is exactly by deamination, oxide treatment, the effluent brine that H-H is discharged reaches the result that can make the reuse of electrolysis production system.Hydrazine hydrate by-product 5% salt solution is handled according to the following steps:
1, deamination
Under vacuum state, the ammonia in the salt solution is along with temperature rises, and solubleness descends, and removes from effluent brine, is condensed into weak ammonia again, 90～95 ℃ of controlled temperature, and the pH value is 11～13, vacuum tightness is-0.04～-0.06MP
aAfter 5% salt solution delivered to spiral heat exchanger heat temperature raising to 90～95 ℃, deliver to deammoniation tower, if need open steam during temperature＜90 ℃, make brine temp reach 90～95 ℃ through steam heater, enter deammoniation tower by spinner-type flowmeter, the ammonia that removes is condensed into weak ammonia by ammonia condenser, with pump suction weak ammonia pond, uses pumped back H-H workshop section (hydrazine hydrate production system) reuse again.Salt solution behind the deamination is by stand-by with pump suction effluent brine storage tank at the bottom of the tower;
2, oxidation
Behind deamination, remaining ammonia nitrogen carries out oxide treatment again, uses the breakpoint chlorination principle, regulates the pH value, adds chlorine, clorox and ammonia nitrogen reaction, reduces ammonia nitrogen concentration and reaches reuse standard.
1. oxychlorination reaction
Connection nitrogen contained in the salt solution generates acetone and hydrazine (N by hydrolysis
2H
4).So oxidation removes ammonia nitrogen, pH when chlorine and ammonia and hydrazine reaction＞9 generate nitrogen (N
2) and overflow, use the pressurized air stripping.The principal reaction formula is as follows:
Cl
2+H
2O＝HClO+HCl
6HClO+4NH
3＝2N
2↑+3H
2O+6HCl+3H
2O
2HClO+N
2H
4＝N
2↑+2HCl+2H
2O
It is 11～12 that hydro-oxidation sodium is regulated the pH value, and control ORP value is 300～360mV
HCl+N
aOH＝N
aCl+H
2O
2. be handled easily, control, chlorine is excessive and the chlorine accident that leaks takes place when preventing the chlorination break, use earlier chlorine, back clorox (N
aClO) carry out oxidation, add N according to pH instrument display data
aOH, regulating the pH value is 11～12, control ORP value is 300～360mV (amount that adds clorox is finely tuned), and opens pressurized air and carry out stripping.The principal reaction formula is promptly:
2NH
3+3N
aClO＝3N
aCl+N
2↑+3H
2O
N
2H
4+2N
aClO＝2N
aCl+N
2↑+2H
2O
For making oxidation fully and be controlled in the theoretical chlorine consumption the excessive 500mg/L of control available chlorine.
Owing to adopted technique scheme, not only effectively utilize hydrazine hydrate by-product 5% salt solution as chlor-alkali system evaporation section salt operation salt water, greatly reduce the waste of water resources, and effectively utilize 31.5 tons of/day (the 5% salt water yield 450M of salt that produce in the hydrazine hydrate production
3/ mouthful, actual saltiness 7%).Greatly reduce the salt consumption of dissolved salt operation, save energy and water resources have reduced environmental pollution.
Description of drawings
Fig. 1 is hydrazine hydrate by-product 5% a brine treatment reuse method process flow sheet
Embodiment
Hydrazine hydrate by-product 5% brine treatment reuse method is that hydrazine hydrate by-product 5% salt solution is handled according to the following steps:
1, deamination
Under vacuum state, the ammonia in the salt solution is along with temperature rises, and solubleness descends, and removes from effluent brine, is condensed into weak ammonia again, 90～95 ℃ of controlled temperature, and the pH value is 11～13, vacuum tightness is-0.04～-0.06MP
aAfter 5% salt solution delivered to spiral heat exchanger heat temperature raising to 90～95 ℃, deliver to deammoniation tower, if need open steam during temperature＜90 ℃, make brine temp reach 90～95 ℃ through steam heater, enter deammoniation tower by spinner-type flowmeter, the ammonia that removes is condensed into weak ammonia by ammonia condenser, with 2# aqua ammonia pump suction weak ammonia pond, sends the reuse of H-H workshop section back to the 3# aqua ammonia pump again.Salt solution behind the deamination is by stand-by with effluent brine storage tank behind the 1# pump suction deamination at the bottom of the tower;
2, oxidation
Behind deamination, remaining ammonia nitrogen carries out oxide treatment again, uses the breakpoint chlorination principle, and regulating the pH value is 11～12, adds chlorine, clorox and ammonia nitrogen reaction, reduces ammonia nitrogen concentration and reaches reuse standard.
1. oxychlorination reaction
Connection nitrogen contained in the salt solution generates acetone and hydrazine (N by hydrolysis
2H
4).So oxidation removes ammonia nitrogen, pH when chlorine and ammonia and hydrazine reaction＞9 generate nitrogen (N
2) and overflow, use the pressurized air stripping.
When adding oxychlorination, 5# oxidation pump is regulated certain flow by spinner-type flowmeter and is entered oxidation pond through oxidation squirt pump and chlorine reaction.Analytical data according to inorganic ammonia, total ammonium, H-H, connection nitrogen in the salt solution before the oxidation adds chlorine, clorox respectively by calculated amount, adds N according to pH instrument display data
aOH, regulating the pH value is 11～12, control ORP value is 300～360mV (amount that adds clorox is finely tuned).And open pressurized air and carry out stripping, salt solution enters 1#, 2# collecting tank respectively after the oxidation, treats that qualified (total ammonium≤30mg/L), put into saline slot is sent to dissolved salt workshop section or evaporation section with the 7# brinepump to sample examination; If defective, then return the processing tank and handle again with the 8# pump.
The treatment process controlling index
The analyzing and testing project
| Sequence number | The sample title | Sampling spot | Test item | Detect frequency | Remarks |
| 1 | 5% salt solution H-H sends waste water here | Before the admission water mixer | NaCl、SO 4 2-、Ca 2+、Mg 2+、 NH 4 +, total ammonium, H-H, connection nitrogen, acetone, available chlorine, pH value | 1 time/day | |
| 2 | Behind the deamination | 1# oxidation pump inlet | NH 4 +, total ammonium, H-H, connection nitrogen, acetone, available chlorine, pH value | 2 times/class | |
| 3 | Before the oxidation | 5# oxidation pump inlet | The same | 2 times/class | |
| 4 | After the oxidation | Oxidation trough | The same | 2 times/class | |
| 5 | Weak ammonia | The ammoniacal liquor storage tank | NH 4 +, H-H, connection nitrogen, Isopropylamine, Virahol, acetone | 1 time/day | |
| 6 | Handle back salt solution | 1#, 2# collecting tank | NH 4 +, total ammonium, H-H, connection nitrogen, acetone, available chlorine, pH value | 1 time/groove | |
| 7 | Handle back salt solution | The salt water storage tank | NaCl、SO 4 2-、Ca 2+、Mg 2+、 NH 4 +, total ammonium, H-H, connection nitrogen, acetone, available chlorine, pH value, Fe 3+, transmittance | 1 time/pond | Environmental protection, electrochemical factory laboratory are analyzed simultaneously, are as the criterion with the laboratory |
Claims (1)
1. hydrazine hydrate by-product 5% brine treatment reuse method is characterized in that: be that hydrazine hydrate by-product 5% salt solution is handled according to the following steps:
(1) deamination
Be-0.04 in vacuum tightness～-0.06MP
aDown, after 5% salt solution delivered to spiral heat exchanger heat temperature raising to 90～95 ℃, deliver to deammoniation tower, if need open steam during temperature＜90 ℃, make brine temp reach 90～95 ℃ through steam heater, enter deammoniation tower by spinner-type flowmeter, the ammonia that removes is condensed into weak ammonia by ammonia condenser, control pH value is 11～13, with pump suction weak ammonia pond, uses the reuse of pumped back H-H workshop section again; Salt solution behind the deamination is by stand-by with pump suction effluent brine storage tank at the bottom of the tower;
(2) oxidation
Behind deamination, remaining ammonia nitrogen carries out oxide treatment again, uses the breakpoint chlorination principle, and regulating the pH value is 11～12, adds chlorine, clorox and ammonia nitrogen reaction, and reduce ammonia nitrogen concentration and reach reuse standard,
1. oxychlorination reaction
Connection nitrogen contained in the salt solution generates acetone and hydrazine (N by hydrolysis
2H
4), pH when chlorine and ammonia and hydrazine reaction＞9 generate nitrogen (N
2) and overflow, use the pressurized air stripping, the principal reaction formula is as follows:
Cl
2+H
2O＝HClO+HCl
6HClO+4NH
3＝2N
2↑+3H
2O+6HCl+3H
2O
2HClO+N
2H
4＝N
2↑+2HCl+2H
2O
It is 11～12 that hydro-oxidation sodium is regulated pH value, and control ORP value is 300～360mV
HCl+N
aOH＝N
aCl+H
2O
2. be handled easily, control, chlorine is excessive and the chlorine accident that leaks takes place when preventing the chlorination break, use earlier chlorine, back clorox (N
aClO) carry out oxidation, that is:
2NH
3+3N
aClO＝3N
aCl+N
2↑+3H
2O
N
2H
4+2N
aClO＝2N
aCl+N
2↑+2H
2O
For making oxidation fully and be controlled in the theoretical chlorine consumption, the excessive 500mg/L of control available chlorine, salt solution pumps to saline slot with pump after treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101638299A CN100425553C (en) | 2006-12-22 | 2006-12-22 | Hydrazine hydrate byproduct 5% salt water processing and reclamation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101638299A CN100425553C (en) | 2006-12-22 | 2006-12-22 | Hydrazine hydrate byproduct 5% salt water processing and reclamation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1994933A CN1994933A (en) | 2007-07-11 |
| CN100425553C true CN100425553C (en) | 2008-10-15 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101638299A Expired - Fee Related CN100425553C (en) | 2006-12-22 | 2006-12-22 | Hydrazine hydrate byproduct 5% salt water processing and reclamation method |
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| Country | Link |
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| CN (1) | CN100425553C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304027A (en) * | 2013-06-18 | 2013-09-18 | 上海晶宇环境工程有限公司 | Hybrid anaerobic sludge filtering bed |
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| CN104724871B (en) * | 2015-03-20 | 2017-12-08 | 苏州聚智同创环保科技有限公司 | The technique that recycling treatment is carried out to the high-salt wastewater of preparation of hydrazine hydrate by use of ketazine |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55142590A (en) * | 1979-04-23 | 1980-11-07 | Japan Organo Co Ltd | Treating method of water containing hydrazine |
| JPS59376A (en) * | 1982-06-25 | 1984-01-05 | Hitachi Plant Eng & Constr Co Ltd | Treatment method for wastewater containing hydrazine |
| SU1551655A1 (en) * | 1988-01-25 | 1990-03-23 | Научно-исследовательский институт физико-химических проблем Белорусского государственного университета им.В.И.Ленина | Method of removing hydrozine from aqueous solutions |
| JPH05115885A (en) * | 1991-01-07 | 1993-05-14 | Kansai Electric Power Co Inc:The | Treatment of hydrazine-containing waste water |
| CN1322684A (en) * | 2001-06-15 | 2001-11-21 | 赖中胜 | Method of eliminating nitrogenous matters from hydrazine hydrate saline-alkali mud |
| JP2003251357A (en) * | 2001-12-28 | 2003-09-09 | Kurita Water Ind Ltd | Treatment method for water containing oxidizable substances |
| JP2004105903A (en) * | 2002-09-20 | 2004-04-08 | Nippon Shokubai Co Ltd | Treatment method for hydrazine-containing wastewater |
| CN1686856A (en) * | 2005-04-22 | 2005-10-26 | 宜宾天原股份有限公司 | Method of treating wastewater containing salt for producing hydrazine hydrate by carbamide method |
| CN1745914A (en) * | 2005-10-13 | 2006-03-15 | 宜宾天原股份有限公司 | Recovering method of acetone and ammonia in hydrated hydrazine waste salt water by ketone azine method |
| CN1792825A (en) * | 2005-11-22 | 2006-06-28 | 宜宾天原股份有限公司 | Process for treating hydrazine hydrate waste salt water by ketone linking nitrogen method |
-
2006
- 2006-12-22 CN CNB2006101638299A patent/CN100425553C/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55142590A (en) * | 1979-04-23 | 1980-11-07 | Japan Organo Co Ltd | Treating method of water containing hydrazine |
| JPS59376A (en) * | 1982-06-25 | 1984-01-05 | Hitachi Plant Eng & Constr Co Ltd | Treatment method for wastewater containing hydrazine |
| SU1551655A1 (en) * | 1988-01-25 | 1990-03-23 | Научно-исследовательский институт физико-химических проблем Белорусского государственного университета им.В.И.Ленина | Method of removing hydrozine from aqueous solutions |
| JPH05115885A (en) * | 1991-01-07 | 1993-05-14 | Kansai Electric Power Co Inc:The | Treatment of hydrazine-containing waste water |
| CN1322684A (en) * | 2001-06-15 | 2001-11-21 | 赖中胜 | Method of eliminating nitrogenous matters from hydrazine hydrate saline-alkali mud |
| JP2003251357A (en) * | 2001-12-28 | 2003-09-09 | Kurita Water Ind Ltd | Treatment method for water containing oxidizable substances |
| JP2004105903A (en) * | 2002-09-20 | 2004-04-08 | Nippon Shokubai Co Ltd | Treatment method for hydrazine-containing wastewater |
| CN1686856A (en) * | 2005-04-22 | 2005-10-26 | 宜宾天原股份有限公司 | Method of treating wastewater containing salt for producing hydrazine hydrate by carbamide method |
| CN1745914A (en) * | 2005-10-13 | 2006-03-15 | 宜宾天原股份有限公司 | Recovering method of acetone and ammonia in hydrated hydrazine waste salt water by ketone azine method |
| CN1792825A (en) * | 2005-11-22 | 2006-06-28 | 宜宾天原股份有限公司 | Process for treating hydrazine hydrate waste salt water by ketone linking nitrogen method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103304027A (en) * | 2013-06-18 | 2013-09-18 | 上海晶宇环境工程有限公司 | Hybrid anaerobic sludge filtering bed |
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| Publication number | Publication date |
|---|---|
| CN1994933A (en) | 2007-07-11 |
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