CN109020022A - A kind of processing method of saccharin waste acid water - Google Patents
A kind of processing method of saccharin waste acid water Download PDFInfo
- Publication number
- CN109020022A CN109020022A CN201810830957.7A CN201810830957A CN109020022A CN 109020022 A CN109020022 A CN 109020022A CN 201810830957 A CN201810830957 A CN 201810830957A CN 109020022 A CN109020022 A CN 109020022A
- Authority
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- China
- Prior art keywords
- organic matter
- hydrochloric acid
- distillation
- water
- reuse
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Water Treatment By Sorption (AREA)
Abstract
A kind of processing method of saccharin waste acid water, mainly by waste acid water first through settling, upper layer organic matter reuse is isolated to production, and remaining sour water enters Distallation systm and is distilled, distillation gained hydrochloric acid is settled, and isolates upper layer organic matter reuse to production, after remaining hydrochloric acid carries out resin adsorption removal organic matter therein again, reuse adsorbs resin 30%(mass ratio used to producing) after sodium hydroxide solution parsing, desorbed solution enter environmental protection treatment it is qualified after discharge.And remaining residual liquid recycling is distilled to production.To make distillation gained hydrochloric acid and the equal recoverable of raffinate after distillation.Wastewater discharge can be not only efficiently reduced, environmental protection is conducive to, and can also be achieved the resource utilization of waste water, is increased economic efficiency.
Description
Technical field
The present invention relates to a kind of processing method of waste acid water, especially a kind of processing method of saccharin waste acid water.It is applicable in
The processing of the copper-containing waste acid water generated in saccharin production.
Background technique
Main component in the copper-containing waste acid water generated in saccharin production: acidity (mass ratio in terms of HCl): 15%-18%；Sulfuric acid
Copper content (mass ratio): 1%-2%；COD:25000-30000PPM；Salt content (mass ratio in terms of NaCl): 7%-8%；Have on a small quantity
Machine acid.
Due to mainly containing hydrochloric acid, sulfuric acid in waste acid water, acidity can reach 18%(mass ratio), it is acid stronger；Salinity
Mainly copper sulphate, sodium chloride and sodium sulphate, content are higher；The main organic principle for influencing COD is toluene and other benzene homologues,
Comparison of ingredients is complicated.Because the copper-containing waste acid water generated in saccharin production has salt content high, acidity is big, organic components complexity etc.
Feature, existing treatment process are with 30%(mass ratio) hydrochloric acid in sodium hydroxide solution and in waste acid water, it newly produces a large amount of
Salinity is handled subsequently into biochemical system, and processing difficulty is larger, and processing cost is high.With state sewage emission standard
Raising and environmental protection policy implementation dynamics it is more and more tighter, existing processing method has been unable to meet current discharge of wastewater mark
Standard has seriously affected the normal production and economic benefit of company.
Summary of the invention
The purpose of the present invention is to provide a kind of processing methods of saccharin waste acid water, it can overcome oneself to have technology not
Foot, the equal recoverable of raffinate after can making distillation gained hydrochloric acid and distillation, can efficiently reduce wastewater discharge, and realize useless
The resource utilization of water.
Its solution is: using distillation still distillation waste acid water, the raffinate after distillation gained hydrochloric acid and distillation is recycled benefit
With specific method is to settle 6 hours waste acid water under normal temperature conditions through sour water settling tank, isolate upper layer organic matter, should
Organic matter reuse extremely produces；Sour water settling tank lower layer sour water enters distillation still, is steamed under conditions of 110-120 DEG C of temperature
It evaporates, distills resulting hydrochloric acid and enter salt acid settler and settle under normal temperature conditions 6 hours, isolate upper layer organic matter reuse to life
It produces;Remaining residual liquid recycling is distilled to production;And salt acid settler lower layer hydrochloric acid enters resin adsorption tower absorption, removes wherein organic
Hydrochloric acid reuse after object extremely produces；Adsorb resin 30%(mass ratio used) after sodium hydroxide solution parsing, desorbed solution enters ring
It is discharged after protecting processing qualification.
Waste acid water by adopting the above technical scheme, is mainly first settled through sour water settling tank, it is organic to isolate upper layer by invention
It after object, is distilled into distillation still, distillation gained hydrochloric acid is settled, and after isolating upper layer organic matter, then carries out resin adsorption
After removing organic matter therein, reuse distills remaining residual liquid recycling to production to producing.To make distillation gained hydrochloric acid and steaming
The equal recoverable of raffinate after evaporating.Wastewater discharge can be not only efficiently reduced, is conducive to environmental protection, and can also be achieved
The resource utilization of waste water, increases economic efficiency.
Detailed description of the invention
Attached drawing Fig. 1 is a kind of process flow chart of the processing method of saccharin waste acid water.
Specific embodiment
It describes the specific embodiments of the present invention in detail with reference to the accompanying drawing.
Referring to attached drawing, the present invention uses distillation still distillation waste acid water, and the raffinate after distillation gained hydrochloric acid and distillation is recycled
It utilizes, processing method comprises the technical steps that:
1, saccharin waste acid water is injected into sour water settling tank 1, after settling 6 hours under normal temperature conditions, from part on sour water settling tank 1
Material mouth isolates upper layer organic matter, the organic matter reuse to production；
2,1 lower layer's sour water of waste acid water settling tank enters distillation still 2 and is distilled, and temperature is controlled at 110-120 DEG C；
3, the resulting hydrochloric acid of distillation fraction is entered into salt acid settler 3, after settling 6 hours under normal temperature conditions, from salt acid deposition
3 top sub-material mouth of tank isolates upper layer organic matter, the organic matter reuse to production；
4, the residual liquid recycling after distilling extremely produces；
5,3 lower layer's hydrochloric acid of salt acid settler enters the absorption of resin adsorption tower 4, and the hydrochloric acid after removing organic matter enters hydrochloric acid tank 5
For use；And resin adsorption tower 4 is run 30 days or so, adsorbs resin 30%(mass ratio used) sodium hydroxide solution desorbed solution into
Row parsing, the desorbed solution after parsing discharge after entering environmental protection treatment qualification.
Claims (1)
1. a kind of processing method of saccharin waste acid water, which is characterized in that distillation still (2) distillation waste acid water is used, by distillation gained
Raffinate after hydrochloric acid and distillation recycles, and processing method comprises the technical steps that:
1) waste acid water is settled 6 hours under normal temperature conditions through sour water settling tank (1), isolates upper layer organic matter, the organic matter
Reuse extremely produces；
2) sour water settling tank (1) lower layer sour water enters distillation still (2), is distilled under conditions of 110-120 DEG C of temperature；
3) resulting hydrochloric acid will be distilled enter salt acid settler (3) and settle 6 hours under normal temperature conditions, and isolate upper layer organic matter
Reuse extremely produces；
4) remaining residual liquid recycling is distilled to production;
5) salt acid settler (3) lower layer hydrochloric acid enters resin adsorption tower (4) absorption, and the hydrochloric acid reuse after removing wherein organic matter is extremely
Production, after adsorbing the sodium hydroxide solution parsing that resin mass ratio used is 30%, desorbed solution enters environmental protection treatment qualification heel row
It puts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830957.7A CN109020022A (en) | 2018-07-26 | 2018-07-26 | A kind of processing method of saccharin waste acid water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810830957.7A CN109020022A (en) | 2018-07-26 | 2018-07-26 | A kind of processing method of saccharin waste acid water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109020022A true CN109020022A (en) | 2018-12-18 |
Family
ID=64646293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810830957.7A Pending CN109020022A (en) | 2018-07-26 | 2018-07-26 | A kind of processing method of saccharin waste acid water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109020022A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104533A (en) * | 2007-06-05 | 2008-01-16 | 南开大学 | Method for treating waste water of H-acid production |
| CN101445268A (en) * | 2008-12-19 | 2009-06-03 | 兀吉康 | Technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate |
-
2018
- 2018-07-26 CN CN201810830957.7A patent/CN109020022A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104533A (en) * | 2007-06-05 | 2008-01-16 | 南开大学 | Method for treating waste water of H-acid production |
| CN101445268A (en) * | 2008-12-19 | 2009-06-03 | 兀吉康 | Technique for recovering zinc chloride from waste water in reduction process of isooctyl thioglycolate |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181218 |
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| RJ01 | Rejection of invention patent application after publication |