JPWO2013105421A1 - 逆浸透処理方法 - Google Patents
逆浸透処理方法 Download PDFInfo
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 23
- 238000003672 processing method Methods 0.000 title claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000013522 chelant Substances 0.000 claims abstract description 14
- 239000002455 scale inhibitor Substances 0.000 claims abstract description 14
- 239000002270 dispersing agent Substances 0.000 claims abstract description 12
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical group OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims abstract description 5
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 150000003839 salts Chemical class 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 238000005054 agglomeration Methods 0.000 claims 1
- 230000002776 aggregation Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 12
- 230000006866 deterioration Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 3
- 238000005188 flotation Methods 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 239000011572 manganese Substances 0.000 description 8
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011033 desalting Methods 0.000 description 2
- 238000005339 levitation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000003002 pH adjusting agent Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 1
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 description 1
- 229940120146 EDTMP Drugs 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229920006318 anionic polymer Polymers 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nitrilotrimethylene Chemical group 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Chemical compound OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/04—Feed pretreatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2311/00—Details relating to membrane separation process operations and control
- B01D2311/04—Specific process operations in the feed stream; Feed pretreatment
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/004—Processes for the treatment of water whereby the filtration technique is of importance using large scale industrial sized filters
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
-
- 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
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
-
- 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
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/12—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances containing nitrogen
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
被処理水としては、工業用水、河川水、湖沼水、井水などの他、有機性排水の生物処理水、各種製造工程や洗浄工程からの排水などが例示される。
鉄系無機凝集剤としては、塩化第二鉄、ポリ硫酸鉄などが挙げられるが、特に重金属含有率が高い塩化第二鉄が挙げられる。この鉄系無機凝集剤中のMn、Ni及びZnの合計の含有率が0.05重量%以上5重量%以下、例えば0.1重量%以上2重量%以下である場合に本発明を適用すると効果的である。被処理水への鉄系無機凝集剤の添加量は、ジャーテストなどによって実験的に定めるのが好ましい。被処理水への鉄系無機凝集剤の添加量は、被処理水の水質等によっても異なるが、通常10〜400mg/L程度である。
凝集処理後の固液分離としては、浮上分離又は沈降分離と、濾材層に通水する濾過とを併用することが望ましい。濾材としては、砂、アンスラサイトなどを用いることができる。
キレート系スケール抑制剤としては、エチレンジアミン四酢酸(EDTA)やニトリロ三酢酸(NTA)などが好適に用いられる。これらのキレート系スケール抑制剤は1種を単独で用いても良く、2種以上を併用しても良い。
スケール分散剤としては、(メタ)アクリル酸重合体及びその塩、マレイン酸重合体及びその塩などの低分子量ポリマー、エチレンジアミンテトラメチレンホスホン酸及びその塩、ヒドロキシエチリデンジホスホン酸及びその塩、ニトリロトリメチレンホスホン酸及びその塩、ホスホノブタントリカルボン酸及びその塩などのホスホン酸及びホスホン酸塩、ヘキサメタリン酸及びその塩、トリポリリン酸及びその塩などの無機重合リン酸及び無機重合リン酸塩などを使用することができる。これらのスケール分散剤は1種を単独で用いても良く、2種以上を併用しても良い。
スケール分散剤の添加量は、RO装置の給水である固液分離水に対して1〜100mg/L程度とすることが好ましい。
HF排水処理水の模擬排水(Ca:100mg/L、F:13mg/L、pH3)を調製し、図1の通り反応槽1に導入し、水酸化ナトリウムを添加してpH=6〜7に調整すると共に、塩化第二鉄を反応槽1内の濃度が150mg/Lとなるように添加した。この塩化第二鉄中のMn含有率は1重量%、Ni含有率は0.05重量%、Zn含有率は0.05重量%であった。反応槽1からの流出水を、凝集槽2に導入して、反応させた後、加圧浮上槽3で加圧浮上処理し、処理水を二層濾過器4(濾材:砂、アンスラサイト)にて濾過した。濾過器4の濾過水にキレート系スケール抑制剤としてウェルクリンA801(栗田工業製)を10mg/L添加し、スケール分散剤としてクリフロートN900(栗田工業製)を10mg/L添加し、次いでRO装置5にてRO膜処理した。RO膜は日東電工製ES−20であり、回収率は85%とした。RO装置5の脱塩率と差圧の経時変化を図2に示す。
キレート系スケール抑制剤を添加しなかったこと以外は実施例1と同一条件にて処理を行った。RO装置5の脱塩率と差圧の経時変化を図2に示す。
なお、本出願は、2012年1月11日付で出願された日本特許出願(特願2012−003287)に基づいており、その全体が引用により援用される。
Claims (8)
- 被処理水に鉄系無機凝集剤を添加し、固液分離した後、逆浸透装置で処理する逆浸透処理方法において、
該逆浸透装置への給水にキレート系スケール抑制剤とスケール分散剤とを添加することを特徴とする逆浸透処理方法。 - 請求項1において、キレート系スケール抑制剤は、エチレンジアミン四酢酸及び/又はニトリロ三酢酸であることを特徴とする逆浸透処理方法。
- 請求項1又は2において、スケール分散剤は(メタ)アクリル酸重合体及びその塩、並びにマレイン酸重合体及びその塩よりなる群から選ばれる少なくとも1種であることを特徴とする逆浸透処理方法。
- 請求項1ないし3のいずれか1項において、前記鉄系無機凝集剤は、Mn、Zn及びNiの合計の含有率が0.05重量%以上であることを特徴とする逆浸透処理方法。
- 請求項1ないし4のいずれか1項において、前記被処理水に前記鉄系無機凝集剤を10〜400mg/L添加することを特徴とする逆浸透処理方法。
- 請求項1ないし5のいずれか1項において、前記キレート系スケール抑制剤の添加量が、前記給水中のMn、Zn及びNiの重金属合計当量の20倍量以上であることを特徴とする逆浸透処理方法。
- 請求項1ないし6のいずれか1項において、前記給水にスケール分散剤を1〜200mg/L添加することを特徴とする逆浸透処理方法。
- 請求項1ないし7のいずれか1項において、前記被処理水に鉄系無機凝集剤を添加してpH4〜8で凝集処理した後固液分離することを特徴とする逆浸透処理方法。
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JP2013553236A JP6135511B2 (ja) | 2012-01-11 | 2012-12-21 | 逆浸透処理方法 |
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PCT/JP2012/083288 WO2013105421A1 (ja) | 2012-01-11 | 2012-12-21 | 逆浸透処理方法 |
JP2013553236A JP6135511B2 (ja) | 2012-01-11 | 2012-12-21 | 逆浸透処理方法 |
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JP (1) | JP6135511B2 (ja) |
KR (1) | KR102021627B1 (ja) |
CN (1) | CN104039713B (ja) |
SG (2) | SG10201700194QA (ja) |
TW (1) | TWI606014B (ja) |
WO (1) | WO2013105421A1 (ja) |
Citations (6)
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JP2002059194A (ja) * | 2000-08-23 | 2002-02-26 | Nippon Steel Corp | 原水の処理方法 |
JP2002191942A (ja) * | 2000-12-22 | 2002-07-10 | Sumitomo Heavy Ind Ltd | 排水処理方法 |
JP2003071252A (ja) * | 2001-09-06 | 2003-03-11 | Nitto Denko Corp | 多段式逆浸透処理方法 |
JP2006007145A (ja) * | 2004-06-28 | 2006-01-12 | Takuma Co Ltd | 一般ごみ焼却場排水の処理方法 |
JP2009006209A (ja) * | 2007-06-26 | 2009-01-15 | Toray Ind Inc | 中空糸膜モジュールの洗浄方法 |
JP2009066508A (ja) * | 2007-09-12 | 2009-04-02 | Kurita Water Ind Ltd | 有機物含有水の凝集処理方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH05269463A (ja) | 1992-03-24 | 1993-10-19 | Kurita Water Ind Ltd | 膜分離装置 |
JP3752761B2 (ja) | 1997-01-16 | 2006-03-08 | 栗田工業株式会社 | 逆浸透膜処理方法 |
JP5029982B2 (ja) | 2005-06-07 | 2012-09-19 | 鶴見曹達株式会社 | 塩化鉄水溶液の精製法 |
JP5223219B2 (ja) | 2007-03-30 | 2013-06-26 | 栗田工業株式会社 | 有機性排水の処理装置 |
JP5348369B2 (ja) | 2008-03-31 | 2013-11-20 | 栗田工業株式会社 | 水処理方法 |
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- 2012-12-21 SG SG10201700194QA patent/SG10201700194QA/en unknown
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JP2002059194A (ja) * | 2000-08-23 | 2002-02-26 | Nippon Steel Corp | 原水の処理方法 |
JP2002191942A (ja) * | 2000-12-22 | 2002-07-10 | Sumitomo Heavy Ind Ltd | 排水処理方法 |
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SG10201700194QA (en) | 2017-03-30 |
WO2013105421A1 (ja) | 2013-07-18 |
CN104039713B (zh) | 2016-08-24 |
KR102021627B1 (ko) | 2019-11-04 |
JP6135511B2 (ja) | 2017-05-31 |
TW201343566A (zh) | 2013-11-01 |
SG11201403820YA (en) | 2014-11-27 |
CN104039713A (zh) | 2014-09-10 |
KR20140109867A (ko) | 2014-09-16 |
TWI606014B (zh) | 2017-11-21 |
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