KR100770026B1 - 상수도관의 부식저감용 수질제어방법 - Google Patents
상수도관의 부식저감용 수질제어방법 Download PDFInfo
- Publication number
- KR100770026B1 KR100770026B1 KR1020060002940A KR20060002940A KR100770026B1 KR 100770026 B1 KR100770026 B1 KR 100770026B1 KR 1020060002940 A KR1020060002940 A KR 1020060002940A KR 20060002940 A KR20060002940 A KR 20060002940A KR 100770026 B1 KR100770026 B1 KR 100770026B1
- Authority
- KR
- South Korea
- Prior art keywords
- water
- carbon dioxide
- corrosion
- supply pipe
- chlorine
- Prior art date
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 129
- 238000000034 method Methods 0.000 title claims abstract description 60
- 238000005260 corrosion Methods 0.000 title claims abstract description 32
- 230000007797 corrosion Effects 0.000 title claims abstract description 32
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 80
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 69
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 49
- 239000011575 calcium Substances 0.000 claims abstract description 45
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 40
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 40
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 24
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 24
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 23
- 235000011121 sodium hydroxide Nutrition 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 18
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 17
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 17
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 17
- 238000003908 quality control method Methods 0.000 claims abstract description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 10
- 238000005189 flocculation Methods 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 5
- 239000000460 chlorine Substances 0.000 claims description 26
- 229910052801 chlorine Inorganic materials 0.000 claims description 26
- 239000000126 substance Substances 0.000 claims description 21
- 238000005345 coagulation Methods 0.000 claims description 20
- 230000015271 coagulation Effects 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 16
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 13
- 239000004571 lime Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 10
- 238000001556 precipitation Methods 0.000 claims description 9
- 239000008213 purified water Substances 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 235000001465 calcium Nutrition 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000010409 thin film Substances 0.000 abstract 1
- 238000000746 purification Methods 0.000 description 17
- 238000002347 injection Methods 0.000 description 16
- 239000007924 injection Substances 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000000116 mitigating effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/20—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices in hinges
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
- E05D11/00—Additional features or accessories of hinges
- E05D11/0054—Covers, e.g. for protection
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F3/00—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices
- E05F3/04—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes
- E05F3/10—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction
- E05F3/104—Closers or openers with braking devices, e.g. checks; Construction of pneumatic or liquid braking devices with liquid piston brakes with a spring, other than a torsion spring, and a piston, the axes of which are the same or lie in the same direction with cam-and-slide transmission between driving shaft and piston within the closer housing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
- E05Y2800/40—Physical or chemical protection
- E05Y2800/428—Physical or chemical protection against water or ice
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Description
Claims (3)
- 원수를 취수하여, 전염소공정, 응집공정, 침전공정, 여과공정 및 후염소공정을 차례로 거치면서 정수지로 유입되는 일반 정수처리공정 상에서 약품을 주입하여 수질을 조절하는 방법에 있어서,상기 전염소공정 직후 응집공정 전에 소석회(Ca(OH)2)와 이산화탄소(CO2)를 주입하여 칼슘경도의 범위가 50 ~ 70㎎ CaCO3/L 으로 유지되게 하고, pH가 7.5 ~ 8.0 으로 유지되도록 조절하는 제1공정과,상기 후염소공정 이후에 소다회(Na2CO3)와 이산화탄소(CO2)를 주입하여 알칼리도가 60 ~ 80㎎ CaCO3/L 으로 유지되게 하고, pH가 7.8 ~ 8.3 으로 유지되도록 조절하는 제2공정을 포함하고,상기 제1,2공정을 거치면서 탄산칼슘침전능 0 ~ 4ppm 조건에 부합되는 탄산염계 화합물이 상수도관 내벽에 생성되게 하는 것을 특징으로 하는 상수도관의 부식저감용 수질제어방법.
- 원수를 취수하여, 전염소공정, 전오존공정, 응집공정, 침전공정, 사여과공정, 후오존공정, 활성탄여과공정 및 후염소공정을 차례로 거치면서 정수지로 유입되는 고도 정수처리공정 상에서 약품을 주입하여 수질을 조절하는 방법에 있어서,상기 전오존공정 직후 응집공정 이전에 소석회(Ca(OH)2)와 이산화탄소(CO2)를 주입하여 칼슘경도의 범위가 50 ~ 70㎎ CaCO3/L 으로 유지되게 하고, pH가 7.5 ~ 8.0 으로 유지되도록 조절하는 제1공정과,상기 후염소공정 이후에 소다회(Na2CO3)와 이산화탄소(CO2)를 주입하여 알칼리도가 60 ~ 80㎎ CaCO3/L 으로 유지되게 하고, pH가 7.8 ~ 8.3 으로 유지되도록 조절하는 제2공정을 포함하고,상기 제1,2공정을 거치면서 탄산칼슘침전능 0~4ppm 조건에 부합되는 탄산염계 화합물이 상수도관 내벽에 생성되게 하는 것을 특징으로 하는 상수도관의 부식저감용 수질제어방법.
- 제 1 항 또는 제 2 항에 있어서,상기 제2공정에서, 소다회(Na2CO3) 대신 가성소다(NaOH)를 사용하도록 된 것을 특징으로 하는 상수도관의 부식저감용 수질제어방법.
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KR1020060002940A KR100770026B1 (ko) | 2006-01-10 | 2006-01-10 | 상수도관의 부식저감용 수질제어방법 |
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KR1020060002940A KR100770026B1 (ko) | 2006-01-10 | 2006-01-10 | 상수도관의 부식저감용 수질제어방법 |
Publications (2)
Publication Number | Publication Date |
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KR20070074876A KR20070074876A (ko) | 2007-07-18 |
KR100770026B1 true KR100770026B1 (ko) | 2007-10-25 |
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KR1020060002940A KR100770026B1 (ko) | 2006-01-10 | 2006-01-10 | 상수도관의 부식저감용 수질제어방법 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210059974A (ko) | 2019-11-18 | 2021-05-26 | 인제대학교 산학협력단 | 송수관로 부식저감용 수질제어방법 |
-
2006
- 2006-01-10 KR KR1020060002940A patent/KR100770026B1/ko active IP Right Grant
Non-Patent Citations (2)
Title |
---|
대한환경공학회 2004 춘계학술연구발표회 논문집, PF-27, pp.1145~1149(2004.04.29. 공지) |
대한환경공학회지 논문, 27권 4호, pp.362~368호(2005.04. 공지) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210059974A (ko) | 2019-11-18 | 2021-05-26 | 인제대학교 산학협력단 | 송수관로 부식저감용 수질제어방법 |
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