CA1056521A - Process for slow softening water - Google Patents
Process for slow softening waterInfo
- Publication number
- CA1056521A CA1056521A CA248,134A CA248134A CA1056521A CA 1056521 A CA1056521 A CA 1056521A CA 248134 A CA248134 A CA 248134A CA 1056521 A CA1056521 A CA 1056521A
- Authority
- CA
- Canada
- Prior art keywords
- water
- zone
- calcium carbonate
- reaction zone
- softened
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 51
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 26
- 238000004062 sedimentation Methods 0.000 claims abstract description 12
- 238000005189 flocculation Methods 0.000 claims abstract description 10
- 230000016615 flocculation Effects 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 8
- 229940043430 calcium compound Drugs 0.000 claims abstract 4
- 150000001674 calcium compounds Chemical class 0.000 claims abstract 4
- 239000008394 flocculating agent Substances 0.000 claims abstract 3
- 230000001376 precipitating effect Effects 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 230000003311 flocculating effect Effects 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 8
- 239000002178 crystalline material Substances 0.000 abstract description 5
- 235000010216 calcium carbonate Nutrition 0.000 description 18
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 6
- 235000012255 calcium oxide Nutrition 0.000 description 6
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 230000014759 maintenance of location Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000004579 marble Substances 0.000 description 4
- 239000008267 milk Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910015400 FeC13 Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- HHSPVTKDOHQBKF-UHFFFAOYSA-J calcium;magnesium;dicarbonate Chemical compound [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O HHSPVTKDOHQBKF-UHFFFAOYSA-J 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910001679 gibbsite Inorganic materials 0.000 description 1
- 239000011361 granulated particle Substances 0.000 description 1
- 239000002054 inoculum Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 particulate marble Chemical compound 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2512107A DE2512107B2 (de) | 1975-03-19 | 1975-03-19 | Verfahren zur Langsamentkarbonisierung von Wasser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1056521A true CA1056521A (en) | 1979-06-12 |
Family
ID=5941850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA248,134A Expired CA1056521A (en) | 1975-03-19 | 1976-03-16 | Process for slow softening water |
Country Status (11)
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2345396A1 (fr) * | 1976-03-24 | 1977-10-21 | Degremont | Appareil de traitement des boues par recirculation, precipitation et separation des boues formees |
| CA1181653A (en) * | 1981-03-24 | 1985-01-29 | Alban Timmons | Process and composition for conditioning an aqueous system |
| DE3478222D1 (en) * | 1983-05-27 | 1989-06-22 | Johnson Filtration Systems | Cross-flow microfiltration lime softener |
| DE4408862A1 (de) * | 1994-03-16 | 1995-09-21 | Passavant Werke | Verfahren und Vorrichtung zur Entkarbonisierung von Rohwasser |
| CN106045109A (zh) * | 2016-06-30 | 2016-10-26 | 华电水务工程有限公司 | 一种高含盐废水的处理方法及设备 |
| CN112142220B (zh) * | 2019-06-28 | 2025-01-14 | 中国瑞林工程技术股份有限公司 | 软化废水的系统和方法 |
| CN115504582A (zh) * | 2022-11-09 | 2022-12-23 | 中船第九设计研究院工程有限公司 | 一种黄金冶炼废水除硬装置 |
| CN115583704A (zh) * | 2022-11-09 | 2023-01-10 | 中船第九设计研究院工程有限公司 | 一种黄金冶炼废水除硬预处理系统 |
-
1975
- 1975-03-19 DE DE2512107A patent/DE2512107B2/de not_active Ceased
-
1976
- 1976-02-24 CH CH222876A patent/CH621753A5/de not_active IP Right Cessation
- 1976-02-27 SE SE7602633A patent/SE422320B/xx unknown
- 1976-03-10 BE BE165017A patent/BE839395A/xx unknown
- 1976-03-16 NL NL7602741A patent/NL7602741A/xx not_active Application Discontinuation
- 1976-03-16 CA CA248,134A patent/CA1056521A/en not_active Expired
- 1976-03-17 IT IT09376/76A patent/IT1060944B/it active
- 1976-03-17 GB GB10756/76A patent/GB1501335A/en not_active Expired
- 1976-03-18 FR FR7607801A patent/FR2304573A1/fr active Granted
- 1976-03-18 JP JP51028687A patent/JPS6035200B2/ja not_active Expired
- 1976-03-18 ES ES446176A patent/ES446176A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1501335A (en) | 1978-02-15 |
| BE839395A (fr) | 1976-07-01 |
| JPS51128832A (en) | 1976-11-10 |
| FR2304573B1 (enrdf_load_stackoverflow) | 1980-05-16 |
| JPS6035200B2 (ja) | 1985-08-13 |
| DE2512107B2 (de) | 1979-06-28 |
| ES446176A1 (es) | 1977-06-01 |
| NL7602741A (nl) | 1976-09-21 |
| IT1060944B (it) | 1982-09-30 |
| FR2304573A1 (fr) | 1976-10-15 |
| DE2512107A1 (de) | 1976-10-14 |
| SE7602633L (sv) | 1976-09-20 |
| SE422320B (sv) | 1982-03-01 |
| CH621753A5 (en) | 1981-02-27 |
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