JPS5527043A - Removing bod and phosphorus from waste water - Google Patents
Removing bod and phosphorus from waste waterInfo
- Publication number
- JPS5527043A JPS5527043A JP9921078A JP9921078A JPS5527043A JP S5527043 A JPS5527043 A JP S5527043A JP 9921078 A JP9921078 A JP 9921078A JP 9921078 A JP9921078 A JP 9921078A JP S5527043 A JPS5527043 A JP S5527043A
- Authority
- JP
- Japan
- Prior art keywords
- bath
- waste water
- exposing
- bod
- calcium salt
- 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
- 239000002351 wastewater Substances 0.000 title abstract 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title abstract 4
- 239000011574 phosphorus Substances 0.000 title abstract 2
- 229910052698 phosphorus Inorganic materials 0.000 title abstract 2
- 159000000007 calcium salts Chemical class 0.000 abstract 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 3
- 239000010802 sludge Substances 0.000 abstract 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 239000004568 cement Substances 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- 239000007790 solid phase Substances 0.000 abstract 2
- 229910000389 calcium phosphate Inorganic materials 0.000 abstract 1
- 239000001506 calcium phosphate Substances 0.000 abstract 1
- 235000011010 calcium phosphates Nutrition 0.000 abstract 1
- 239000010794 food waste Substances 0.000 abstract 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229940085991 phosphate ion Drugs 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
PURPOSE: For simultaneous and economical separation of BOD and phosphorus from waste water, the waste water containing the same is transformed into calcium salt in an exposing bath having solid phase consisting of cement and lime.
CONSTITUTION: Water water containing BOD and phosphor such as urban sewage or food waste is treated in an air exposing bath 1 having solid phase 17 of cement and lime massive mixture. When the exposing bath is adjusted to pH 7.8 to 9, phosphate ions in waste water transforms into calcium salt. The formed calcium salt is adsorbed by active sludge and extracted from the bottom of the settling bath 2. Next, the sludge treating bath 3 is adjusted to a pH 5 to 7 to discharge the adsorbed calcium phosphate into solution as phosphate ion. Thereafter, active sludge is returned to the exposing bath 1 to coagulate phosphate ions for separation. Thus, BOD and phosphor in waste water is simultaneously and economically removed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9921078A JPS5527043A (en) | 1978-08-14 | 1978-08-14 | Removing bod and phosphorus from waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9921078A JPS5527043A (en) | 1978-08-14 | 1978-08-14 | Removing bod and phosphorus from waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5527043A true JPS5527043A (en) | 1980-02-26 |
Family
ID=14241281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9921078A Pending JPS5527043A (en) | 1978-08-14 | 1978-08-14 | Removing bod and phosphorus from waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5527043A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927657A (en) * | 2017-04-01 | 2017-07-07 | 昆明理工大学 | A kind of method of bottom mud in lake cooperative disposal dreg containing arsenic |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3522171A (en) * | 1969-01-27 | 1970-07-28 | Fmc Corp | Sewage sludge treatment process |
| JPS5168974A (en) * | 1974-12-12 | 1976-06-15 | Shinetsu Chemical Co | Shinyono shorihoho |
-
1978
- 1978-08-14 JP JP9921078A patent/JPS5527043A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3522171A (en) * | 1969-01-27 | 1970-07-28 | Fmc Corp | Sewage sludge treatment process |
| JPS5168974A (en) * | 1974-12-12 | 1976-06-15 | Shinetsu Chemical Co | Shinyono shorihoho |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927657A (en) * | 2017-04-01 | 2017-07-07 | 昆明理工大学 | A kind of method of bottom mud in lake cooperative disposal dreg containing arsenic |
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