JPS5771699A - Treating method for organic waste liquid - Google Patents
Treating method for organic waste liquidInfo
- Publication number
- JPS5771699A JPS5771699A JP55148042A JP14804280A JPS5771699A JP S5771699 A JPS5771699 A JP S5771699A JP 55148042 A JP55148042 A JP 55148042A JP 14804280 A JP14804280 A JP 14804280A JP S5771699 A JPS5771699 A JP S5771699A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- separated
- sludge
- treated
- water
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 3
- 239000010815 organic waste Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 8
- 239000010802 sludge Substances 0.000 abstract 6
- 239000002002 slurry Substances 0.000 abstract 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 239000011268 mixed slurry Substances 0.000 abstract 3
- 229910052742 iron Inorganic materials 0.000 abstract 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 abstract 1
- 230000008719 thickening Effects 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Abstract
PURPOSE: To treat a waste liquid at low cost while reducing the amount of a sludge generated, by a method wherein an organic waste liquid is biologically treated, then a mixed slurry of a residual sludge and treated water is separated and concentrated by using an iron-based flocculant, and the concentrated slurry is mechanically dehydrated after adding a ferrous salt and H2O2.
CONSTITUTION: Raw faces 31 are fed into a biological treating step 32 such as a biological nitrification or denitrification process. In order to maintain a desired concentration of an activated sludge in the step 32, a portion of mixed liquor suspended solids (MLSS) is fed into a sludge concentrator 33 to separate it into a concentrated sludge 34 and concentration-derived separated water 35, and the sludge 34 is returned to the step 32 while the separated water 35 is mixed into an outflow slurry 36. To the mixed slurry 37 thus formed, the iron-based flocculant 39 and slaked lime 40 are added in a stirring tank 38, and then the mixed slurry 37 is separated into thickening-derived separated water 42 and a thicknened slurry 43 by a thckener 41. The separated water 42 is treated in a COD removing step A to become high-grade treated water 51. On the other hand, the slurry 43 is fed into a mixing tank 44, where FeSO4 45 is added, then H2O2 or O3 46 is added to the slurry in an oxidizing tank 47, and the slurry thus treated is separated into dehydration-derived separated water 49 and a dehydrated cake 50 by a filter press 48. The separated water 49 is then returned to the tank 38.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55148042A JPS5771699A (en) | 1980-10-22 | 1980-10-22 | Treating method for organic waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55148042A JPS5771699A (en) | 1980-10-22 | 1980-10-22 | Treating method for organic waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5771699A true JPS5771699A (en) | 1982-05-04 |
Family
ID=15443820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55148042A Pending JPS5771699A (en) | 1980-10-22 | 1980-10-22 | Treating method for organic waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5771699A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008174914A (en) * | 2007-01-16 | 2008-07-31 | C-Cube Corp | Overturning prevention device for ladder |
| US7716941B2 (en) | 2003-01-13 | 2010-05-18 | Lg Electronics Inc. | Multi-type air conditioner with defrosting device |
| CN104944624A (en) * | 2015-01-24 | 2015-09-30 | 濮阳市化工研究所 | Displacement-fronting advanced oxidation low-sludge sewage treatment method |
-
1980
- 1980-10-22 JP JP55148042A patent/JPS5771699A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7716941B2 (en) | 2003-01-13 | 2010-05-18 | Lg Electronics Inc. | Multi-type air conditioner with defrosting device |
| JP2008174914A (en) * | 2007-01-16 | 2008-07-31 | C-Cube Corp | Overturning prevention device for ladder |
| CN104944624A (en) * | 2015-01-24 | 2015-09-30 | 濮阳市化工研究所 | Displacement-fronting advanced oxidation low-sludge sewage treatment method |
| CN104944624B (en) * | 2015-01-24 | 2019-03-29 | 濮阳市化工研究所 | A kind of low mud and sewage processing method of displacement Forward advanced oxidation |
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