CN103342439A - Treatment process for epoxy wastewater - Google Patents
Treatment process for epoxy wastewater Download PDFInfo
- Publication number
- CN103342439A CN103342439A CN2013102456067A CN201310245606A CN103342439A CN 103342439 A CN103342439 A CN 103342439A CN 2013102456067 A CN2013102456067 A CN 2013102456067A CN 201310245606 A CN201310245606 A CN 201310245606A CN 103342439 A CN103342439 A CN 103342439A
- Authority
- CN
- China
- Prior art keywords
- waste water
- epoxy
- wastewater
- treatment process
- ferrous sulfate
- 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
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a treatment process for epoxy wastewater. The treatment process comprises the following steps of 1. introducing the epoxy wastewater into a Fenton tank, pouring a ferrous sulfate saturated solution, performing a Fenton reaction on the ferrous sulfate and hydrogen peroxide in the epoxy wastewater; 2. adding lime to adjust a PH value of the wastewater in the tank to be 8-9; 3. adding a flocculating agent and precipitating; 4. introducing a supernatant liquid after precipitation directly into a biochemical system for processing, filter pressing the lower precipitate by a plate-and-frame filter press, and introducing a filtrate into the biochemical system for processing. Since the hydrogen peroxide content in the epoxy wastewater is between 1.5% and 2%. A great amount of COD can be removed by adding ferrous sulfate into the wastewater to carry out the Fenton reaction. Besides, the process is in no need of evaporation or steam and motors used in the process are fewer than those of an evaporation process, so that a forced circulation pump (motor requiring 75 KW) used during the evaporation is omitted; and at the same time, the load of circulating cooling water is reduced, thereby greatly reducing the cost of wastewater treatment.
Description
Technical field
The present invention relates to a kind for the treatment of process of epoxy waste water.
Background technology
Epoxy plasticizer is a class softening agent that is made through epoxidation by vegetables oil or unsaturated fatty acids.Mainly contain epoxidised soybean oil, epoxidised linseed oil and unsaturated fatty acids epoxidised ester, as epoxyoleic acid butyl ester, epoxyoleic acid monooctyl ester, epoxyoleic acid ester in the last of the ten Heavenly stems etc.Most epoxy plasticizer have thermostable effect, and normal and other stablizers share to play stabilization.Epoxidized vegetable oil has good anti-extractibility and anti-transport property.Main as PVc softening agent and stablizer, often do not make primary plasticizer.Avirulent epoxidised soybean oil, Semen Lini oil can be made the softening agent of the usefulness of contact food.The toxicity of epoxy plasticizer is less, the wrapping material of food and medicine have been permitted in many countries, be unique softening agent that can be used for packaging material for food of united states drug management board approval, so output is very big, also therefore can produce a large amount of epoxy waste water needs to handle.
The processing mode of the waste water of present domestic epoxy plasticizer manufacturing enterprise is: at first regulate pH value at 7-8, distill then, salt is separated with waste water.Waste water enters biochemical system and handles, and it is very high to handle the waste water energy consumption like this, has increased the cost of wastewater treatment greatly.
Summary of the invention
The objective of the invention is to solve the problem that prior art exists, a kind for the treatment of process that can reduce the epoxy waste water of processing cost greatly is provided.
The technical scheme that realizes the object of the invention is a kind for the treatment of process of epoxy waste water, may further comprise the steps:
Step 1: epoxy waste water is introduced the Fenton pond, drop into the ferrous sulfate saturated solution, hydrogen peroxide and organism in ferrous sulfate and the epoxy waste water carry out Fenton's reaction;
Step 2: add lime, the pH value of waste water is at 8-9 in the equalizing tank;
Step 3: add flocculation agent, precipitation;
Step 4: the supernatant liquid of post precipitation directly enters biochemical system and handles; The precipitation of lower floor is carried out press filtration by plate-and-frame filter press, and filtrate enters biochemical system and handles.
In the described step 1, before epoxy waste water is introduced the Fenton pond, earlier epoxy waste water is passed through the oil trap oil removal.
In the described step 1, the input amount of ferrous sulfate is: 849 * X%(L/h), x% is the content of hydrogen peroxide in the epoxy waste water.
In the described step 3, described flocculation agent is anionic polyacrylamide, and consumption is 2/100000ths of wastewater flow rate.
In the described step 4, biochemical system comprises anaerobic pond and Aerobic Pond successively.
After having adopted technique scheme, the present invention has following positive effect: because the hydrogen peroxide content of epoxy waste water is between 1.5-2%, by in waste water, dropping into ferrous sulfate, make it that Fenton's reaction take place, can remove a large amount of COD, and this technology is owing to need not evaporate, do not need steam, and motor is also than lacking that evaporation technology is used, economize the forced circulation pump (motor needs 75KW) that devaporation is used, the load of the cooling circulating water of Jiang Diing has lowered the cost of wastewater treatment greatly simultaneously.
Embodiment
The treatment process of a kind of epoxy waste water of present embodiment may further comprise the steps:
Step 1: earlier 10T epoxy waste water is passed through the oil trap oil removal, then epoxy waste water is introduced the Fenton pond, analyzing hydrogen peroxide content is that 1.65%, COD is 19800, drop into 140L ferrous sulfate saturated solution, hydrogen peroxide and organism in ferrous sulfate and the epoxy waste water carry out Fenton's reaction;
Step 2: Fenton's reaction finishes, and adds lime, and the pH value of waste water is at 8-9 in the equalizing tank;
Step 3: add the 10Kg2% flocculation agent, precipitation; Flocculation agent is anionic polyacrylamide;
Step 4: the COD of the supernatant liquid of post precipitation is 4890, directly enters biochemical system and handles; The precipitation of lower floor is carried out press filtration by plate-and-frame filter press, and filtrate (COD is 5080) enters biochemical system and handles, and biochemical system comprises anaerobic pond and Aerobic Pond successively.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the treatment process of an epoxy waste water is characterized in that may further comprise the steps:
Step 1: epoxy waste water is introduced the Fenton pond, drop into the ferrous sulfate saturated solution, hydrogen peroxide and organism in ferrous sulfate and the epoxy waste water carry out Fenton's reaction;
Step 2: add lime, the pH value of waste water is at 8-9 in the equalizing tank;
Step 3: add flocculation agent, precipitation;
Step 4: the supernatant liquid of post precipitation directly enters biochemical system and handles; The precipitation of lower floor is carried out press filtration by plate-and-frame filter press, and filtrate enters biochemical system and handles.
2. the treatment process of a kind of epoxy waste water according to claim 1 is characterized in that: in the described step 1, before epoxy waste water is introduced the Fenton pond, earlier epoxy waste water is passed through the oil trap oil removal.
3. the treatment process of a kind of epoxy waste water according to claim 1, it is characterized in that: in the described step 1, the input amount of ferrous sulfate is: 849 * X%(L/h), x% is the content of hydrogen peroxide in the epoxy waste water.
4. the treatment process of a kind of epoxy waste water according to claim 1, it is characterized in that: in the described step 3, described flocculation agent is anionic polyacrylamide, and consumption is 2/100000ths of wastewater flow rate.
5. the treatment process of a kind of epoxy waste water according to claim 1, it is characterized in that: in the described step 4, biochemical system comprises anaerobic pond and Aerobic Pond successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102456067A CN103342439A (en) | 2013-06-19 | 2013-06-19 | Treatment process for epoxy wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102456067A CN103342439A (en) | 2013-06-19 | 2013-06-19 | Treatment process for epoxy wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103342439A true CN103342439A (en) | 2013-10-09 |
Family
ID=49277281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102456067A Pending CN103342439A (en) | 2013-06-19 | 2013-06-19 | Treatment process for epoxy wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103342439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291526A (en) * | 2014-09-30 | 2015-01-21 | 浙江嘉澳环保科技股份有限公司 | Epoxy plasticizer wastewater treatment method capable of improving properties of biochemical sludge |
| CN104829048A (en) * | 2015-04-21 | 2015-08-12 | 南通大恒环境工程有限公司 | Treatment method for grease-class waste water |
| CN107250051A (en) * | 2015-12-22 | 2017-10-13 | 住友电气工业株式会社 | Method for treating water and water treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815827A (en) * | 2012-06-18 | 2012-12-12 | 江苏扬农锦湖化工有限公司 | Epoxy resin high-salinity wastewater treatment method |
-
2013
- 2013-06-19 CN CN2013102456067A patent/CN103342439A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102815827A (en) * | 2012-06-18 | 2012-12-12 | 江苏扬农锦湖化工有限公司 | Epoxy resin high-salinity wastewater treatment method |
Non-Patent Citations (1)
| Title |
|---|
| 冯斐等: "Fenton氧化－水解酸化－活性污泥工艺处理增塑剂废水工程实例", 《给水排水》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291526A (en) * | 2014-09-30 | 2015-01-21 | 浙江嘉澳环保科技股份有限公司 | Epoxy plasticizer wastewater treatment method capable of improving properties of biochemical sludge |
| CN104291526B (en) * | 2014-09-30 | 2016-05-18 | 浙江嘉澳环保科技股份有限公司 | A kind of epoxy plasticizer method of wastewater treatment that can improve biochemical sludge performance |
| CN104829048A (en) * | 2015-04-21 | 2015-08-12 | 南通大恒环境工程有限公司 | Treatment method for grease-class waste water |
| CN107250051A (en) * | 2015-12-22 | 2017-10-13 | 住友电气工业株式会社 | Method for treating water and water treatment system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107055712B (en) | Method for recovering ammonia nitrogen, phosphorus and volatile fatty acid in livestock and poultry excrement hydrolysate by using two-stage bipolar membrane electrodialysis | |
| CN103964609A (en) | Membrane treatment method of landfill leachate concentrate | |
| CN103204605A (en) | Method for treating garlic processing waste water | |
| CN103265148A (en) | Method for treating wastewater in epoxy plasticizer production | |
| CN105693030A (en) | System and method for treating bamboo carbonization wastewater | |
| CN103342439A (en) | Treatment process for epoxy wastewater | |
| CN103319053B (en) | Treatment process and device of wastewater produced by erythromycin thiocyanate | |
| CN104193051A (en) | Deep purification treatment method for printing ink wastewater | |
| CN104030532A (en) | Printing and dyeing wastewater treatment process of textile fabric | |
| CN103896457B (en) | A kind of Fine Chemistry Wastewater treatment process | |
| CN104803560A (en) | Method for manufacturing precipitated lignin from production waste water of man-made fiber boards | |
| CN104370344A (en) | Advanced treatment method and advanced treatment system for landfill leachate | |
| CN102659270A (en) | Method for treating ultra-filtration water of garbage leachate | |
| CN104418481A (en) | Mass-energy transformation treatment process for production wastewater | |
| CN106045265A (en) | Sludge dewatering method combining chitosan and magnetic field | |
| CN202829785U (en) | Treatment system for nanofiltration and reverse-osmosis concentrated solution | |
| CN106277706A (en) | A kind of deeply dehydrating sludge conditioner | |
| CN103979709A (en) | Combined softening processing system and method for circulating water and discharging water | |
| CN215559486U (en) | Alkali-resistant tubular membrane and RO membrane system treatment process circulating water | |
| CN105293722A (en) | Treatment agent for wastewater from food coloring production and wastewater treatment method | |
| CN203877998U (en) | Circulating water/sewage water combined softening treatment system | |
| CN104445786A (en) | Process and device for treating high-concentration salt-containing wastewater | |
| CN108033590A (en) | Cloth wastewater treatment method | |
| CN103408196B (en) | Method for treating wastewater containing fluorescent whitening agent | |
| CN206927636U (en) | A kind of dehydrogenation of isobutane device waste water reclaiming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131009 |