JPS6447493A - Treatment of waste water from flue gas desulfurization - Google Patents
Treatment of waste water from flue gas desulfurizationInfo
- Publication number
- JPS6447493A JPS6447493A JP62203046A JP20304687A JPS6447493A JP S6447493 A JPS6447493 A JP S6447493A JP 62203046 A JP62203046 A JP 62203046A JP 20304687 A JP20304687 A JP 20304687A JP S6447493 A JPS6447493 A JP S6447493A
- Authority
- JP
- Japan
- Prior art keywords
- water
- waste water
- stage
- hydrochloric acid
- acid
- 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
- 239000002351 wastewater Substances 0.000 title abstract 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title 1
- 238000006477 desulfuration reaction Methods 0.000 title 1
- 230000023556 desulfurization Effects 0.000 title 1
- 239000003546 flue gas Substances 0.000 title 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000920 calcium hydroxide Substances 0.000 abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- RMGVZKRVHHSUIM-UHFFFAOYSA-N dithionic acid Chemical compound OS(=O)(=O)S(O)(=O)=O RMGVZKRVHHSUIM-UHFFFAOYSA-N 0.000 abstract 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 abstract 1
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 abstract 1
- 229910001634 calcium fluoride Inorganic materials 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
Landscapes
- Treating Waste Gases (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE:To reduce the treating cost by controlling the hydrochloric acid concn. in the waste water from a cooling stage, heating the water to carry out acidolysis, and then neutralizing the water. CONSTITUTION:Since the waste water 21 from the cooling stage contains dithionic acid generated in an absorption stage 2, hydrochloric acid 36 is added by a hydrochloric acid mixer 12 to obtain a 0.2-2% acid soln. The water is then heated to >=95 deg.C by steam 37 in a steam mixer 13, and introduced into a heat-insulated decomposition vessel 14 wherein dithionic acid is decomposed. After acidolysis, the water is introduced into a rough-neutralization stage 7, and the pH is controlled to 2-4 by slaked lime 38 to deposit gypsum. Slaked lime 38 is then added in a pH regulating stage 8 to control the pH to 7-9. As a result, the fluorine is converted into difficulty soluble calcium fluoride which is precipitated and removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62203046A JPH0716668B2 (en) | 1987-08-17 | 1987-08-17 | Flue gas desulfurization wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62203046A JPH0716668B2 (en) | 1987-08-17 | 1987-08-17 | Flue gas desulfurization wastewater treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6447493A true JPS6447493A (en) | 1989-02-21 |
| JPH0716668B2 JPH0716668B2 (en) | 1995-03-01 |
Family
ID=16467452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62203046A Expired - Lifetime JPH0716668B2 (en) | 1987-08-17 | 1987-08-17 | Flue gas desulfurization wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716668B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803521A (en) * | 2015-05-06 | 2015-07-29 | 广州新普利节能环保科技有限公司 | Desulphurization waste water purifying system and desulphurization waste water purifying process |
| CN116658742A (en) * | 2023-05-19 | 2023-08-29 | 浙江凤登绿能环保股份有限公司 | A kind of pipeline anticorrosion method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53147678A (en) * | 1977-05-31 | 1978-12-22 | Kureha Chem Ind Co Ltd | Improved dry exhaust gas desurfurization method |
| JPS571486A (en) * | 1980-06-03 | 1982-01-06 | Mitsubishi Heavy Ind Ltd | Disposal of waste water |
-
1987
- 1987-08-17 JP JP62203046A patent/JPH0716668B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53147678A (en) * | 1977-05-31 | 1978-12-22 | Kureha Chem Ind Co Ltd | Improved dry exhaust gas desurfurization method |
| JPS571486A (en) * | 1980-06-03 | 1982-01-06 | Mitsubishi Heavy Ind Ltd | Disposal of waste water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803521A (en) * | 2015-05-06 | 2015-07-29 | 广州新普利节能环保科技有限公司 | Desulphurization waste water purifying system and desulphurization waste water purifying process |
| CN116658742A (en) * | 2023-05-19 | 2023-08-29 | 浙江凤登绿能环保股份有限公司 | A kind of pipeline anticorrosion method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0716668B2 (en) | 1995-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE46132T1 (en) | PROCESS FOR THE PRODUCTION OF CALCIUM HYDROXIDE. | |
| CA2182305A1 (en) | Process for removing sulfur dioxide from flue gas | |
| TW364859B (en) | Process for removing sulfur dioxide from flue gas | |
| ATE422T1 (en) | PROCESS FOR THE PREPARATION OF AN AQUEOUS SUSPENSION OF CALCIUM OR/AND MAGNESIUM CARBONATES FROM DOLOMITE. | |
| CA2103664A1 (en) | Method of recovering energy and chemicals from black liquor | |
| JPS55137084A (en) | Treating method of grout exhaust water | |
| JPS6414116A (en) | Production of ferric chloride for flocculant in waste water treatment | |
| IT1197489B (en) | Gypsum alpha hemi:hydrate prodn. | |
| NO902637L (en) | PROCEDURE FOR WATER DETOXIFICATION | |
| JPS5539282A (en) | Organic waste water treating method | |
| JPS5589409A (en) | Treating method of waste slag | |
| RU2006456C1 (en) | Method for elemental sulfur production | |
| NL7902062A (en) | Milk of lime prepn. from powdered quicklime - using slaking vessel overflowing to adjusting vessel | |
| GB1475452A (en) | Method and apparatus for treating sewage or waste sludge | |
| JPS565317A (en) | Preparation of calcium silicate or complex of calcium silicate with gypsum | |
| AU7072991A (en) | Process for the slaking of quick lime contained in ashes | |
| JPS5521529A (en) | Treating method for rustproof of iron steel material | |
| SU998326A1 (en) | Method for dehydrating pump of calcium hypochlorite | |
| Sal'nikova | Sewage treatment from sulphate ions using lime and aluminium oxosulphate | |
| RU2049063C1 (en) | Process for treating concentrated sulfite-sulfate solution into gypsum | |
| JPS5633081A (en) | Treatment for drainage of grout injecting process | |
| JPS5640485A (en) | Treatment of waste water | |
| JPS5778988A (en) | Treatment of waste water of waste gas desulfurization | |
| Petric et al. | Treatment of waste water from the electrothermal industry and re-use of raw materials | |
| JPS5428451A (en) | Method of denitrifying and purifying waste water |