CN1031836A - Microbiotic waste liquor mesoxalic acid reclaims novel process - Google Patents
Microbiotic waste liquor mesoxalic acid reclaims novel process Download PDFInfo
- Publication number
- CN1031836A CN1031836A CN 88103818 CN88103818A CN1031836A CN 1031836 A CN1031836 A CN 1031836A CN 88103818 CN88103818 CN 88103818 CN 88103818 A CN88103818 A CN 88103818A CN 1031836 A CN1031836 A CN 1031836A
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- microbiotic
- waste liquor
- acid
- chemical reaction
- oxalic acid
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention belongs to the microbiotic field of waste treatment.
The present invention relates to novel process with all the microbiotic waste liquor mesoxalic acids recovery of oxalic acid acidifying.Add some material, make various organic impuritys in the waste liquor, can not form absorption or co-precipitation, very easily separate obtaining purified caoxalate or barium oxalate, transform then and obtain oxalic acid with the calcium salt or the barium salt of oxalic acid.
Description
The invention belongs to the field of waste treatment in the production of antibiotics.
The invention provides a kind of with all microbiotic waste liquor mesoxalic acids recovery novel procesies of oxalic acid acidifying, in the data of having reported (see " techwatch " 1981 the 5th phases P.30 Anyang, Henan Province scientific information research publish), requirement is (pH value is 9) adding calcium hydroxide or calcium chloride under alkaline condition, forms co-precipitation.This throw out has a large amount of organic impuritys, is difficult to separate, and poor product quality, the rate of recovery is low, complicated operation.Other has data to propose (see " microbiotic industrial production " Jining Antibiotics Factory of Shandong Prov. edit P.453 in September, 1981) to add lead sulfate, form the lead oxalate precipitation, and is also successful at last.
Purpose of the present invention is exactly for solving the isolation technique problem.Requirement reaches the shortening operational path, reduces labor intensity, and is convenient to industrial production.
The present invention has found under acidic conditions, and promptly pH value is carrying out continuous chemical reaction below 5, makes that organic impurity is dissolved in aqueous phase in the waste liquor, but the reactant rapid precipitation separates obtaining purified throw out.Dry the back and make suspended matter with suitable water, add sulfuric acid reaction, filtration, vacuum concentration, crystallization get oxalic acid.
The pollution that technology of the present invention is easy, ripe, turn waste into wealth, reduce water will obtain obvious social and economic benefit.
Embodiment:
4000 milliliters of mycin crystalline mother solutions fetch earth.Adding hydrochloric acid adjusting PH is 3.Under agitation add calcium chloride 35 grams.Continue to stir 10 minutes, leave standstill half an hour, inclining supernatant liquid.Filter, filter cake adds water and makes suspension for 60 milliliters.Add the vitriol oil 45 grams, stirred 10 minutes, filter, the filtrate vacuum concentration, crystallization gets oxalic acid.
Claims (4)
1, the invention belongs to the microbiotic field of waste treatment, relate to all microbiotic waste liquor mesoxalic acids of oxalic acid acidifying and reclaim novel process, the past report all is under alkaline condition, adds calcium hydroxide, and calcium chloride carries out chemical reaction.The present invention adds mineral acid (except that sulfuric acid) or organic acid, keeps waste liquor under acidic conditions, carries out chemical reaction with calcium chloride, calcium hydroxide, bariumchloride etc., forms oxalate, is oxalic acid again with the sulfuric acid conversion.
2, according to claim 1: its key feature is to regulate pH value below 5 with mineral acid (except that sulfuric acid) or organic acid, and adding calcium chloride, calcium hydroxide, bariumchloride carry out chemical reaction.
3, according to claim 1: it is characterized in that can half an hour with the interior rapid precipitation that reaches.
4, according to claim 1: as to it is characterized in that to carry out the continuous chemical reaction, the method for having cut off big volume reaction precipitation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103818 CN1031836A (en) | 1988-06-22 | 1988-06-22 | Microbiotic waste liquor mesoxalic acid reclaims novel process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103818 CN1031836A (en) | 1988-06-22 | 1988-06-22 | Microbiotic waste liquor mesoxalic acid reclaims novel process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1031836A true CN1031836A (en) | 1989-03-22 |
Family
ID=4832769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103818 Pending CN1031836A (en) | 1988-06-22 | 1988-06-22 | Microbiotic waste liquor mesoxalic acid reclaims novel process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031836A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978202A (en) * | 2020-08-12 | 2020-11-24 | 浙江理工大学上虞工业技术研究院有限公司 | Recovery method of alkaline washable disperse dye hydrolysate |
| CN115747522A (en) * | 2022-10-21 | 2023-03-07 | 广西博世科环保科技股份有限公司 | Method for recycling and cyclically utilizing soil heavy metal oxalic acid leaching waste liquid |
-
1988
- 1988-06-22 CN CN 88103818 patent/CN1031836A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111978202A (en) * | 2020-08-12 | 2020-11-24 | 浙江理工大学上虞工业技术研究院有限公司 | Recovery method of alkaline washable disperse dye hydrolysate |
| CN111978202B (en) * | 2020-08-12 | 2022-08-05 | 浙江理工大学上虞工业技术研究院有限公司 | Recovery method of alkaline washable disperse dye hydrolysate |
| CN115747522A (en) * | 2022-10-21 | 2023-03-07 | 广西博世科环保科技股份有限公司 | Method for recycling and cyclically utilizing soil heavy metal oxalic acid leaching waste liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |