CN105174549A - Method for deep treating phenol-cyanogen wastewater - Google Patents
Method for deep treating phenol-cyanogen wastewater Download PDFInfo
- Publication number
- CN105174549A CN105174549A CN201510625617.7A CN201510625617A CN105174549A CN 105174549 A CN105174549 A CN 105174549A CN 201510625617 A CN201510625617 A CN 201510625617A CN 105174549 A CN105174549 A CN 105174549A
- Authority
- CN
- China
- Prior art keywords
- cyanide
- phenol
- containing phenol
- wastewater containing
- liquid separation
- 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.)
- Granted
Links
Abstract
The invention relates to a method for deep treating phenol-cyanogen wastewater. The method comprises the treating steps that firstly, the phenol-cyanogen wastewater is put into a photocatalytic oxidation pond, H2O2 is added in the pond, an appropriate amount of iron-containing reagents are simultaneously added, and the pond is placed under ultraviolet illumination; secondly, the phenol-cyanogen wastewater in the step 1 is conveyed into a multiple-effect adsorption pond, an appropriate amount of adsorbing agents are added, adsorption of the adsorbing agents to residual COD, chrominance and especially cyanide in the water is promoted with the iron-containing reagents in the phenol-cyanogen wastewater; thirdly, the adsorbed phenol-cyanogen wastewater is conveyed into a settling pond and treated through a solid-liquid separation technology, and solid-liquid separation between the adsorbing agents and the adsorbed residual COD, chrominance and cyanide and the phenol-cyanogen wastewater can be achieved; fourthly, a pH regulating agent and an auxiliary flocculating agent are added in the phenol-cyanogen wastewater, and the treated phenol-cyanogen wastewater is conveyed into a filter pressing room; lastly, the phenol-cyanogen wastewater in the filter pressing room is treated by adopting the solid-liquid separation technology to enable iron-containing filter residues to be separated from the water, and filtrate enters a clean water pond. The method has the advantages of being simple in technology, economical, environmentally friendly, low in cost and the like.
Description
Technical field
The invention belongs to environment-protective process technical field, relate to one
the method of advanced treatment wastewater containing phenol and cyanide.
Background technology
Wastewater containing phenol and cyanide is after biochemical treatment, and COD, colourity, prussiate etc. often can't be up to standard.At present in order to reach recycle water standard, what a lot of wastewater containing phenol and cyanide factories adopted is the method that ultrafiltration adds reverse osmosis, but this method no matter construction cost, running cost or maintenance cost, cost is all too high.In order to solve bi-membrane method problem costly, need design a kind of simple, economic wastewater containing phenol and cyanide advanced treatment process.
The Liu Jinquan of Beijing Sang De pro-environment group research and development centre have studied with ozone, H
2o
2/ O
3and UV/O
3deng advanced oxidation processes advanced treatment on coking wastewater, utilize H
2o
2and O
3in water, produce hydroxyl radical free radical be oxidized the difficult degradation COD in wastewater containing phenol and cyanide, be 40min, pH in duration of contact be 8.5, when temperature of reaction is 25 ° of C, three kinds of methods all about 45%, but do not discuss the removal problem of colourity and prussiate to the clearance of COD in its literary composition.The petrel of being permitted of Tongji University have studied Fenton-coagulation catalytic oxidation Treatment of Wastewater in Coking, and its result of study shows that in ferrous iron concentration be 140mg/L, and hydrogen peroxide concentration is 200mg/L, and ferric chloride concn is 26mg/L, PAM concentration when being 5.2mg/L, COD
crclearance reaches 87.3%, and chroma removal rate reaches 99.45%.The COD of process water is 43.2mg/L, and colourity is 45 times, CN
-concentration be 1.02mg/L.From data results, its COD process reaches recycle water standard, and colourity and prussiate are all below standard.The Lu Jianhang of Zhejiang University's Institute of Environmental Science have studied coking chemical waste water coagulant special to the COD in waste water
cr, colourity, F
-and CN
-removal effect.Result shows that at dosage be 300mg/L, and pH value is under the condition of 6 ~ 6.5, and coagulant special has good removal effect to each pollutent, and COD drops to 50mg/L from 250mg/L, and colourity drops to 75 times from 1500 times, F
-drop to 1mg/L from 20mg/L, total cyanogen drops to 0.34mg/L from 2.3mg/L.Because emission standard value is at that time higher, the emission standard of total cyanogen is 0.5mg/L, and present emission standard is 0.2mg/L, and the reuse standard of colourity is 30 times, and therefore this method still can not meet current reuse requirement.
Summary of the invention
For overcoming above-mentioned technical disadvantages, the invention provides
a method for advanced treatment wastewater containing phenol and cyanide, it can be bycOD in wastewater containing phenol and cyanide
cr, colourity, total cyanogen is brought down below 60mg/L, 30 times, 0.2mg/L simultaneously, has simple, the economic environmental protection of technique, the feature such as with low cost.
The present invention solves the technological method that its technical problem adopts:
a method for advanced treatment wastewater containing phenol and cyanide, is characterized in that treatment step is:
(1) the photochemical catalytic oxidation stage: wastewater containing phenol and cyanide to be dropped in photocatalytic oxidation pool and add H in pond
2o
2, add appropriate containing ferron simultaneously, and then place half an hour under ultraviolet illumination, thus the prussiate in cyanide wastewater is down to 1mg/L to 10mg/L;
(2) ferrous short absorption phase: the wastewater containing phenol and cyanide in step (1) to be transported in multi-effect adsorption the pond in and to add appropriate sorbent material, utilize in wastewater containing phenol and cyanide containing ferron, promotion sorbent material is to the absorption of COD remaining in water, colourity, especially prussiate;
(3) the solid-liquid separation first stage: wastewater containing phenol and cyanide adsorb in step (2) is transported to settling tank interior and adopt solid-liquid separation technique to process wastewater containing phenol and cyanide, sorbent material and the remaining COD, colourity and the prussiate that adsorb and wastewater containing phenol and cyanide is made to carry out solid-liquid separation, sorbent material and the remaining COD, colourity and the prussiate that adsorb are sent between press filtration and carry out sorbent material recovery, wastewater containing phenol and cyanide is then sent in PH equalizing tank and continue process;
(4) Yu Tie removes the stage: add pH adjusting agent and auxiliary flocculation agent to the wastewater containing phenol and cyanide in PH equalizing tank, residue in water is removed from water containing iron ion, and sends between press filtration by the wastewater containing phenol and cyanide processed;
(5) solid-liquid separation subordinate phase: adopt solid-liquid separation technique, wastewater containing phenol and cyanide in press filtration is processed, iron content filter residue is separated from water, filtrate then enters clean water basin, filter residue is then recycled, finally make the COD in filtrate be down to below 60mg/L, colourity is down to less than 30 times, and prussiate is down to below 0.2mg/L.
The invention has the beneficial effects as follows: (1) adopts Pollutant levels stage treatment, high pollution substrate concentration part adopts photocatalysis oxidation technique, by COD
crdrop to below 100mg/L, total cyanogen is down to below 10mg/L; (2) in the process of lower concentration part, adopt Coupling Adsorption precipitation technology, utilize photochemical catalytic oxidation remaining iron in front end to act synergistically together with sorbent material, to COD
crcarry out adsorption treatment with total cyanogen, COD is down to less than 60, total cyanogen drops to about 0.3mg/L; (3) add pH adjusting agent, on the one hand iron ion remaining in water is precipitated with the form of ironic hydroxide and molysite, reduce the concentration of salt in water; Utilize the coagulation of precipitation on the other hand, remove the COD in water, colourity and total cyanogen further, make it reach reuse standard.There is simple, the economic environmental protection of technique, the feature such as with low cost.
Accompanying drawing explanation
Fig. 1 is the invention process process schematic.
Embodiment
Below in conjunction with embodiment, the present invention is further described.
see Fig. 1, a kind of method of advanced treatment wastewater containing phenol and cyanide, is characterized in that treatment step is:
(1) the photochemical catalytic oxidation stage: wastewater containing phenol and cyanide to be dropped in photocatalytic oxidation pool and add H in pond
2o
2, add appropriate containing ferron simultaneously, and then place half an hour under ultraviolet illumination, thus the prussiate in cyanide wastewater is down to 1mg/L to 10mg/L;
(2) ferrous short absorption phase: the wastewater containing phenol and cyanide in step (1) to be transported in multi-effect adsorption the pond in and to add appropriate sorbent material, utilize in wastewater containing phenol and cyanide containing ferron, promotion sorbent material is to the absorption of COD remaining in water, colourity, especially prussiate;
(3) the solid-liquid separation first stage: wastewater containing phenol and cyanide adsorb in step (2) is transported to settling tank interior and adopt solid-liquid separation technique to process wastewater containing phenol and cyanide, sorbent material and the remaining COD, colourity and the prussiate that adsorb and wastewater containing phenol and cyanide is made to carry out solid-liquid separation, sorbent material and the remaining COD, colourity and the prussiate that adsorb are sent between press filtration and carry out sorbent material recovery, wastewater containing phenol and cyanide is then sent in PH equalizing tank and continue process;
(4) Yu Tie removes the stage: add pH adjusting agent and auxiliary flocculation agent to the wastewater containing phenol and cyanide in PH equalizing tank, residue in water is removed from water containing iron ion, and sends between press filtration by the wastewater containing phenol and cyanide processed;
(5) solid-liquid separation subordinate phase: adopt solid-liquid separation technique, wastewater containing phenol and cyanide in press filtration is processed, iron content filter residue is separated from water, filtrate then enters clean water basin, filter residue is then recycled, finally make the COD in filtrate be down to below 60mg/L, colourity is down to less than 30 times, and prussiate is down to below 0.2mg/L.
Embodiment 1:
If the COD of former water
crfor 150mg/L, total cyanogen is 15mg/L, and colourity is 3000 times.
(1) photochemical catalytic oxidation section: by H
2o
2add in waste water, and add a certain amount of ferrous sulfate, ultraviolet lighting half an hour, now carry out following reaction:
（1）
（2）
Hydrogen peroxide, under the katalysis of UV-light and ferrous ion, produce a large amount of hydroxyl radical free radicals, and hydroxyl radical free radical has extremely strong oxygenizement, can cross the oxidation operation in waste water, by COD
crbe down to below 100mg/L, prussiate is down to 2mg/L.
(2) ferrous short adsorption stage: can remaining a part of ferrous ion and iron ion in photochemical catalytic oxidation section, ferrous ion can be formed Prussian blue with cryanide ion on the one hand, Prussian blue compared with cryanide ion, large 10 times of molecular weight, and large 2 times of carried charge, therefore more easily by absorption and precipitation.On the other hand, the iron ion in water can form ferric hydroxide precipitate, produces the effect of flocculation.By adding certain amount activated carbon, utilizing the ferrous ion in waste water and iron ion, promoting that activated carbon is to the absorption of COD remaining in water, colourity, especially prussiate.
(3) solid-liquid separation one section: activated carbon has good sedimentation capacity, settling tank is adopted to carry out solid-liquid separation to adsorption stage draining, the activated carbon pressure filter of settling region carries out dehydration further and is separated, because activated carbon price is relatively high, and can reactivate, therefore can by the activated carbon reuse after solid-liquid separation.
(4) Yu Tie removes section: this section is arranged in the pH regulator pond of Fig. 1, and because waste water is after activated carbon adsorption, also containing a large amount of ferrous ions, ferrous ion can react with the dissolved oxygen in water in water, raw at brown iron ion.For removing remaining iron, adding a certain amount of CaO, by pH regulator to weakly alkaline, remaining iron being removed.
(5) solid-liquid separation two sections: adopt solid-liquid separation technique, iron content sediment is separated from water.COD is down to below 60mg/L the most at last, and colourity is down to less than 30 times, and prussiate is down to below 0.2mg/L.
Can find out that the present invention can remove COD water, colourity and total cyanogen further from embodiment, make it reach reuse standard that there is simple, the economic environmental protection of technique, the feature such as with low cost.
Claims (1)
1. a method for advanced treatment wastewater containing phenol and cyanide, is characterized in that treatment step is:
(1) the photochemical catalytic oxidation stage: wastewater containing phenol and cyanide to be dropped in photocatalytic oxidation pool and add H in pond
2o
2, add appropriate containing ferron simultaneously, and then place half an hour under ultraviolet illumination, thus the prussiate in cyanide wastewater is down to 1mg/L to 10mg/L;
(2) ferrous short absorption phase: the wastewater containing phenol and cyanide in step (1) to be transported in multi-effect adsorption the pond in and to add appropriate sorbent material, utilize in wastewater containing phenol and cyanide containing ferron, promotion sorbent material is to the absorption of COD remaining in water, colourity, especially prussiate;
(3) the solid-liquid separation first stage: wastewater containing phenol and cyanide adsorb in step (2) is transported to settling tank interior and adopt solid-liquid separation technique to process wastewater containing phenol and cyanide, sorbent material and the remaining COD, colourity and the prussiate that adsorb and wastewater containing phenol and cyanide is made to carry out solid-liquid separation, sorbent material and the remaining COD, colourity and the prussiate that adsorb are sent between press filtration and carry out sorbent material recovery, wastewater containing phenol and cyanide is then sent in PH equalizing tank and continue process;
(4) Yu Tie removes the stage: add pH adjusting agent and auxiliary flocculation agent to the wastewater containing phenol and cyanide in PH equalizing tank, residue in water is removed from water containing iron ion, and sends between press filtration by the wastewater containing phenol and cyanide processed;
(5) solid-liquid separation subordinate phase: adopt solid-liquid separation technique, wastewater containing phenol and cyanide in press filtration is processed, iron content filter residue is separated from water, filtrate then enters clean water basin, filter residue is then recycled, finally make the COD in filtrate be down to below 60mg/L, colourity is down to less than 30 times, and prussiate is down to below 0.2mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625617.7A CN105174549B (en) | 2015-09-28 | 2015-09-28 | A kind of method of advanced treating wastewater containing phenol and cyanide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510625617.7A CN105174549B (en) | 2015-09-28 | 2015-09-28 | A kind of method of advanced treating wastewater containing phenol and cyanide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105174549A true CN105174549A (en) | 2015-12-23 |
| CN105174549B CN105174549B (en) | 2018-01-23 |
Family
ID=54897088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510625617.7A Active CN105174549B (en) | 2015-09-28 | 2015-09-28 | A kind of method of advanced treating wastewater containing phenol and cyanide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105174549B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011050900A (en) * | 2009-09-03 | 2011-03-17 | Fuji Xerox Co Ltd | Water treatment apparatus and water treatment method |
| JP5359685B2 (en) * | 2009-08-25 | 2013-12-04 | 富士ゼロックス株式会社 | Water treatment apparatus and water treatment method used in toner manufacturing process |
| CN103755077A (en) * | 2014-02-10 | 2014-04-30 | 吉林大学 | Phenolic wastewater treatment method |
| CN104045195A (en) * | 2014-07-07 | 2014-09-17 | 新疆维吾尔自治区环境保护科学研究院 | Pre-treatment method of semi-coke wastewater |
| CN204607770U (en) * | 2015-03-30 | 2015-09-02 | 西安科技大学 | A kind of DYE PRODUCTION oxidation pond concentrates the treatment unit of waste water |
-
2015
- 2015-09-28 CN CN201510625617.7A patent/CN105174549B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5359685B2 (en) * | 2009-08-25 | 2013-12-04 | 富士ゼロックス株式会社 | Water treatment apparatus and water treatment method used in toner manufacturing process |
| JP2011050900A (en) * | 2009-09-03 | 2011-03-17 | Fuji Xerox Co Ltd | Water treatment apparatus and water treatment method |
| CN103755077A (en) * | 2014-02-10 | 2014-04-30 | 吉林大学 | Phenolic wastewater treatment method |
| CN104045195A (en) * | 2014-07-07 | 2014-09-17 | 新疆维吾尔自治区环境保护科学研究院 | Pre-treatment method of semi-coke wastewater |
| CN204607770U (en) * | 2015-03-30 | 2015-09-02 | 西安科技大学 | A kind of DYE PRODUCTION oxidation pond concentrates the treatment unit of waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105174549B (en) | 2018-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5828969B2 (en) | Coal gasification wastewater treatment system and coal gasification wastewater treatment method | |
| US9540268B2 (en) | Method for treating highly concentrated resin-desorption liquid generated from wastewater deep purification | |
| CN104024168B (en) | Treatment of coking wastewater | |
| US8663480B2 (en) | Heavy metal removal from waste streams | |
| CN109437454B (en) | Enhanced physicochemical treatment method and device for refined high-salt high-ammonia special oily sewage | |
| CN106977013B (en) | Purification treatment method of high-chlorine thallium-containing wastewater and application thereof | |
| CN105540987A (en) | Water deep purification method | |
| CN102976511A (en) | Coking wastewater membrane filtration concentrate recycle method | |
| CN112850946A (en) | Method for treating coking wastewater by enhanced Fenton oxidation process | |
| CN102627366A (en) | Method for treating vanadium pentoxide wastewater and circularly utilizing resources | |
| CN110668613A (en) | Deep treatment method for gold hydrometallurgy cyanide-containing wastewater | |
| CN103819024A (en) | Pretreatment method for fluorenone production wastewater | |
| JP7166795B2 (en) | Method for treating wastewater containing COD components | |
| JP3843052B2 (en) | Method for recovering and using valuable metals in metal-containing wastewater | |
| CN104230122A (en) | Gold mine cyaniding waste residue leaching solution treating method | |
| JP4261857B2 (en) | Method for recovering and using valuable metals in metal-containing wastewater | |
| AU2017221284B2 (en) | Process for reduction of sulfide from water and wastewater | |
| CN206437968U (en) | A kind of system of high-salt wastewater treatment for reuse | |
| CN107531511B (en) | Method and apparatus for treating water by contact with adsorbent material | |
| CN105174549B (en) | A kind of method of advanced treating wastewater containing phenol and cyanide | |
| CN104556459A (en) | Method for reusing deeply treated coking wastewater | |
| KR101379374B1 (en) | Reducing ironsalt processing method of dyeing wastewater | |
| KR20090119334A (en) | Purificating process for outflow water of abandoned mine and the apparatus using them | |
| CN105174662B (en) | The treating method and apparatus of oil field difficult degradation oil extraction-generated waste water | |
| KR20160078793A (en) | Treatment method of wastewater comprising phenol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 512700 Shaoguan Ruyuan County, Guangdong Province, Ruyuan County, Eagle Peak West Road Civil Affairs Bureau office building four floor 401 Applicant after: Guangdong cloud Environment Technology Co., Ltd. Address before: Ring road 512700 Guangdong city of Shaoguan province Ruyuan County dairy town No. 9 (old procuratorate office building 2 floor) Applicant before: Shaoguan Lang Run Environmental Protection Technology Co., Ltd |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |