CN102826709A - Technique for removing high-concentration sulfate ions in long-chain dibasic acid fermentation waste liquid - Google Patents
Technique for removing high-concentration sulfate ions in long-chain dibasic acid fermentation waste liquid Download PDFInfo
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- CN102826709A CN102826709A CN 201210275545 CN201210275545A CN102826709A CN 102826709 A CN102826709 A CN 102826709A CN 201210275545 CN201210275545 CN 201210275545 CN 201210275545 A CN201210275545 A CN 201210275545A CN 102826709 A CN102826709 A CN 102826709A
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Abstract
The invention discloses a technique for removing high-concentration sulfate ions in a long-chain dibasic acid fermentation waste liquid, which comprises the following steps: adding a dibasic acid waste liquid and lime cream into a neutralizing settling tank, stirring for 5-10 minutes, standing for 1-2 hours, sending the supernatant into a flocculation tank, adding a flocculant, standing for 0.5-1 hour, and treating the liquid in an air floatation machine for 10-20 minutes to remove solid particles in the liquid, wherein the liquid flowing out of the air floatation machine enters a USB tank. The technique is used for removing high-concentration sulfate ions in the long-chain dibasic acid fermentation waste liquid, is simple and easy to operate, and has the advantages of low cost and high removal rate.
Description
Technical field
The present invention relates to remove in a kind of long-chain biatomic acid fermented waste fluid high concentration sulphate ionic technology.
Background technology
At present, the technological method that sulfate radical is removed in the separation of comparative maturity mainly contains 6 kinds, i.e. barium chloride method, Calcium Chloride Method, cold method, barium carbonate method, ion exchange method and membrane separation process.This in 6 method relative merits are respectively arranged, for example bariumchloride belongs to highly toxic substance, difficulty is reclaimed in the packing bag of by product and bariumchloride, gives to produce with field management and brings difficulty greatly.
Removal to the sulfate ion in the long-chain biatomic acid fermented waste fluid does not have special method at present.
Summary of the invention
Technical problem to be solved by this invention is: a kind of removal technology that is used for the sulfate ion of long-chain biatomic acid fermented waste fluid is provided.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
Remove high concentration sulphate ionic technology in a kind of long-chain biatomic acid fermented waste fluid, its flow process is: diprotic acid waste liquid and milk of lime join in the neutralization precipitation pond, stir 5-10min; Leave standstill 1-2h, supernatant gets into flocculation basin, and adds flocculation agent; Leave standstill 0.5-1h; Leave standstill back liquid and get into air supporting machine stop 10-20min, remove the solid particulate in the liquid, the liquid that flows out the air supporting machine gets into the USB pond.
The weight ratio of waste liquid and milk of lime is 100: 5-10, flocculation agent gather silicic acid, and the weight ratio of gathering silicic acid and supernatant is 1-2: 100.
The invention has the beneficial effects as follows: this technology is used for the removal of long-chain biatomic acid fermented waste fluid middle and high concentration sulfate ion, and method is simple to operation, and cost is lower, and clearance is high.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1
Remove high concentration sulphate ionic technology in a kind of long-chain biatomic acid fermented waste fluid, its flow process is: diprotic acid waste liquid and milk of lime join in the neutralization precipitation pond, and the weight ratio of waste liquid and milk of lime is 100: 5; Stir 5min, leave standstill 1h, supernatant gets into flocculation basin; And add and to gather silicic acid, the weight ratio of gathering silicic acid and supernatant is 1: 100, leaves standstill 0.5h; Leave standstill back liquid and get into air supporting machine stop 10min, remove the solid particulate in the liquid, the liquid that flows out the air supporting machine gets into the USB pond.
Embodiment 2
Remove high concentration sulphate ionic technology in a kind of long-chain biatomic acid fermented waste fluid, its flow process is: diprotic acid waste liquid and milk of lime join in the neutralization precipitation pond, and the weight ratio of waste liquid and milk of lime is 100: 10; Stir 10min, leave standstill 2h, supernatant gets into flocculation basin; And add and to gather silicic acid, the weight ratio of gathering silicic acid and supernatant is 1-2: 100, leave standstill 1h; Leave standstill back liquid and get into air supporting machine stop 20min, remove the solid particulate in the liquid, the liquid that flows out the air supporting machine gets into the USB pond.
Claims (3)
1. remove high concentration sulphate ionic technology in a long-chain biatomic acid fermented waste fluid, its flow process is: diprotic acid waste liquid and milk of lime join in the neutralization precipitation pond, stir 5-10min; Leave standstill 1-2h, supernatant gets into flocculation basin, and adds flocculation agent; Leave standstill 0.5-1h; Leave standstill back liquid and get into air supporting machine stop 10-20min, remove the solid particulate in the liquid, the liquid that flows out the air supporting machine gets into the USB pond.
2. technology according to claim 1 is characterized in that: the weight ratio of described waste liquid and milk of lime is 100: 5-10.
3. technology according to claim 1 is characterized in that: described flocculation agent is to gather silicic acid, and the weight ratio of gathering silicic acid and supernatant is 1-2: 100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210275545 CN102826709A (en) | 2012-08-06 | 2012-08-06 | Technique for removing high-concentration sulfate ions in long-chain dibasic acid fermentation waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210275545 CN102826709A (en) | 2012-08-06 | 2012-08-06 | Technique for removing high-concentration sulfate ions in long-chain dibasic acid fermentation waste liquid |
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| Publication Number | Publication Date |
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| CN102826709A true CN102826709A (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201210275545 Pending CN102826709A (en) | 2012-08-06 | 2012-08-06 | Technique for removing high-concentration sulfate ions in long-chain dibasic acid fermentation waste liquid |
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| CN (1) | CN102826709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776136A (en) * | 2019-10-28 | 2020-02-11 | 中国石油大学(北京) | Pretreatment method for process wastewater generated in preparation of long-chain dicarboxylic acid by biological fermentation method |
| CN111304703A (en) * | 2020-03-11 | 2020-06-19 | 吕文广 | Method for removing sulfate radical in high-quality surface treatment material |
-
2012
- 2012-08-06 CN CN 201210275545 patent/CN102826709A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110776136A (en) * | 2019-10-28 | 2020-02-11 | 中国石油大学(北京) | Pretreatment method for process wastewater generated in preparation of long-chain dicarboxylic acid by biological fermentation method |
| CN111304703A (en) * | 2020-03-11 | 2020-06-19 | 吕文广 | Method for removing sulfate radical in high-quality surface treatment material |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121219 |