CN1138707C - Process for treating sewage by decomposing carbonate with afterheat of slags - Google Patents
Process for treating sewage by decomposing carbonate with afterheat of slags Download PDFInfo
- Publication number
- CN1138707C CN1138707C CNB001127705A CN00112770A CN1138707C CN 1138707 C CN1138707 C CN 1138707C CN B001127705 A CNB001127705 A CN B001127705A CN 00112770 A CN00112770 A CN 00112770A CN 1138707 C CN1138707 C CN 1138707C
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- slag
- carbonate
- afterheat
- sewage
- slags
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Abstract
The present invention relates to a process for treating sewage in the producing process of yellow phosphorus, particularly to a process for treating sewage by decomposing carbonate with the afterheat of slag. Carbonate milled into powder of 10 to 100 meshes is continuously spread on slag discharging from a furnace; the carbonate is decomposed by the afterheat of the slag at the high temperature of 1000 DEG C; then, the carbonate along with the slag flows into a slag flushing pool; the decomposed carbonate is dissolved in the slag flushing pool; a chemical reaction is generated; consequently, the acidity formed in the producing process is neutralized so that the pH value of sewage reaches more than 6. The present invention is suitable for treating the sewage in the producing process of yellow phosphorus.
Description
Technical field: the present invention relates to the sewage water treatment method in the phosphorus production process, particularly a kind of decomposing carbonate with afterheat of slags process for treating sewage that utilizes.
Background technology: in the prior art to the sewage disposal in the phosphorus production process, with lime, caustic soda, Tai-Ace S 150, bodied ferric sulfate etc., but part all comes with some shortcomings: (1) sewage disposal expense is too high, with the 5000KVA electric furnace is example, buys the expense of handling raw material and reaches several ten thousand yuan to tens0000 yuan; (2) easily form a large amount of colloids, make the water of sewage lagoon muddy; (3) settled amount of sludge is excessive in sewage lagoon, and removing needs the increase expense, also accounts for the storing place, also can pollute environment; (4) sewage disposal if one class or double-shift work, it is discontinuous to work, effect is relatively poor, if work in three shifts, the labor wage of processing is higher again; (5) manually-operated environment is abominable, manually shovels with scoop one to add lime, can cause the environment of local PH＞8, has PH3 gas to generate, and influences the healthy of operator.
Summary of the invention: the objective of the invention is to: a kind of decomposing carbonate with afterheat of slags process for treating sewage that utilizes is provided, it mainly is the waste heat that makes full use of slag in the phosphorus production process, come decomposing carbonate (Wingdale or rhombspar), make it be decomposed into basic oxide, thereby in being used for and the acid that produces in the production process.
Formation of the present invention: the carbonate that will wear into 10～100 order powder, be sprinkling upon continuously on the slag of just coming out of the stove, utilize the pyritous of degree more than 1000 afterheat of slags is still arranged, make carbonate decomposition, flow into the flushing cinder pond with slag then, the carbonate that has decomposed dissolves in the flushing cinder pond, and chemical reaction takes place, thereby in and the acidity that forms in the production process, the pH value of sewage is reached more than 5.Before going out slag, with 5 ends of slag slag runner, carbonate powder shop, when treating out slag, slag flows out, and the current limliting metered valve door 3 of carbonate hopper 2 is opened, and allows carbonate powder spread on the slag, flows in the flushing cinder pond 6 with slag then at every turn.
Compared with the prior art, the carbonate that the present invention uses is cheap, and buying expenses is lower than other raw material, and the waste heat energy of slag makes full use of, this method can neutralize acidity again can defluorination, and equipment is simple, and required expense is low, simple to operate, can not need to increase in addition the workman on behalf of operation by the table workman.Disposing of sewage with this method is successive, and effect is better, can satisfy processing requirement, do not generate the environment of PH3, workman's operating environment improves, and suspended substance in the sewage lagoon and mud reduce, the remove contamination expense in pond of saving has also reduced the stacking place, has reduced environmental pollution.Water quality is better, can be used for spray, refining, rinsing.
Description of drawings: accompanying drawing is a structural representation of the present invention.
1. 2 floorings among the figure, 2. carbonate hopper, 3. current limliting metered valve door, 4. tremie pipe, 5. slag slag runner, 6. flushing cinder pond.
Embodiment: as shown in drawings, before going out slag at every turn, ditch is spread with carbonate in slag slag runner 5 bottoms, when treating that slag flows out, the current limliting metered valve door 3 of carbonate hopper 2 is opened, carbonate powder on system phosphorus factory building two floorings 1 spreads on the slag by tremie pipe 4, flow to flushing cinder pond 6 with slag then, the consumption of carbonate powder is because of the difference of batching, and the difference of raw material can form different acidity, therefore, consumption also can change, finally be that pH value according to sewage requires to decide, but slag is during the time, quantitative carbonate powder also should spread.The carbonate that has decomposed dissolves in the flushing cinder pond, and neutralization reaction takes place, and in having played and the effect of sewage acidity, the slag of formation is pulled out with slag, transport to the slag field.
Claims (2)
1, a kind of decomposing carbonate with afterheat of slags process for treating sewage that utilizes, it is characterized in that: the carbonate that will wear into 10-100 order powder, be sprinkling upon continuously on the slag of just coming out of the stove, utilizing still has the pyritous of degree more than 1000 afterheat of slags, makes carbonate decomposition, flows into the flushing cinder pond with slag then, the carbonate that has decomposed dissolves in the flushing cinder pond, chemical reaction takes place, thus in and the acidity that forms in the production process, the pH value of sewage is reached more than 6.
2, the decomposing carbonate with afterheat of slags process for treating sewage that utilizes according to claim 1, it is characterized in that: before going out slag at every turn, with slag slag runner (5) end, carbonate powder shop, when treating out slag, slag flows out, the current limliting metered valve door (3) of carbonate hopper (2) is opened, allowed carbonate powder spread on the slag, flow in the flushing cinder pond (6) with slag then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001127705A CN1138707C (en) | 2000-03-15 | 2000-03-15 | Process for treating sewage by decomposing carbonate with afterheat of slags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001127705A CN1138707C (en) | 2000-03-15 | 2000-03-15 | Process for treating sewage by decomposing carbonate with afterheat of slags |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1313249A CN1313249A (en) | 2001-09-19 |
| CN1138707C true CN1138707C (en) | 2004-02-18 |
Family
ID=4582608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001127705A Expired - Fee Related CN1138707C (en) | 2000-03-15 | 2000-03-15 | Process for treating sewage by decomposing carbonate with afterheat of slags |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1138707C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8674007B2 (en) * | 2006-07-12 | 2014-03-18 | Sabic Innovative Plastics Ip B.V. | Flame retardant and scratch resistant thermoplastic polycarbonate compositions |
-
2000
- 2000-03-15 CN CNB001127705A patent/CN1138707C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1313249A (en) | 2001-09-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |