CN104261597A - Pretreatment method for removing oil from high-concentration sewage in coal chemical industry - Google Patents
Pretreatment method for removing oil from high-concentration sewage in coal chemical industry Download PDFInfo
- Publication number
- CN104261597A CN104261597A CN201410584515.0A CN201410584515A CN104261597A CN 104261597 A CN104261597 A CN 104261597A CN 201410584515 A CN201410584515 A CN 201410584515A CN 104261597 A CN104261597 A CN 104261597A
- Authority
- CN
- China
- Prior art keywords
- waste water
- oil
- membrane
- wastewater
- emulsion
- 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
- 239000000126 substance Substances 0.000 title claims abstract description 26
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 239000010865 sewage Substances 0.000 title claims abstract description 15
- 238000002203 pretreatment Methods 0.000 title claims abstract description 7
- 239000002351 wastewater Substances 0.000 claims abstract description 57
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000000701 coagulant Substances 0.000 claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 13
- 230000015556 catabolic process Effects 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 19
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000001728 nano-filtration Methods 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 239000012510 hollow fiber Substances 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 239000007764 o/w emulsion Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 10
- 229910021529 ammonia Inorganic materials 0.000 abstract description 8
- 239000010883 coal ash Substances 0.000 abstract description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 2
- 239000002244 precipitate Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 30
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 6
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 6
- 239000010842 industrial wastewater Substances 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a pretreatment method of high-concentration sewage in coal chemical industry; the method comprises the following specific steps: firstly, high-concentration sewage in coal chemical industry enters an oil separation and demulsification unit, the pH value of the wastewater is adjusted, and a coagulant aid is added to demulsify and precipitate emulsified oil in the wastewater and remove oil substances such as alkane and the like in the wastewater; and then adjusting the pH value of the wastewater after oil removal and demulsification, and introducing the wastewater into a membrane separation device to remove solid suspended particles in the wastewater. The wastewater is pretreated by oil separation, the removal rate of oil reaches about 80%, the removal rate of solid suspended particles (such as coal ash) reaches 99%, and the removal rate of COD reaches more than 25%. After pretreatment, the subsequent phenol-ammonia recovery efficiency is obviously improved, the treatment difficulty is reduced, the treatment process is simplified, and the economic benefit is effectively increased.
Description
Technical field
The present invention relates to and belong to technical field of waste water processing, particularly a kind of pretreatment process of Coal Chemical Industry high-concentration sewage.
Background technology
Coal Chemical Industry height strong sewage complicated component, containing hazardous and noxious substances such as a large amount of solid suspended particle, condensed-nuclei aromatics and ammonia nitrogens in waste water, wherein COD10000 ~ 50000mg/L, phenol 5000 ~ 20000/L.Due to the restriction of Coal Chemical Industry technique, in waste water solubility oily substance and size distribution 4 ~ 200 μm tiny solid suspended particle (as coal ash) by gravitational settling method be difficult to remove, difficult treatment.But contain a large amount of solid suspended particles (as coal ash) and oils in waste water just, the phenol in water is a certain amount of to be adsorbed on particle and oil droplet, to strengthen phenol recovery ammonia difficulty, reduce its organic efficiency and reduce phenol quality; Solid suspended particle easily causes the blocking of the equipment such as heat exchanger.In addition, the oil-contg in water is large, easily produces foam in biological process, reduces oxygen and nutritive substance transfer rate.
At present, the treatment process of waste water generally comprises the formants such as depickling, phenol recovery ammonia, physico-chemical pretreatment, biochemical treatment and advanced treatment, and without the pretreatment technology to waste water before phenol recovery ammonia.Chinese patent CN103288311A discloses a kind of crushed coal pressure gasifying waste water reclaiming treatment process and treatment system and application, and described treatment process sequentially comprises: waste water is carried out oily water separation by (1), obtains the waste water after oily water separation process; (2) adopt active sludge to process the waste water that above-mentioned steps (1) obtains, then mud-water separation, obtains the waste water after active sludge treatment; (3) add sorbent material, then solid-liquid separation in the waste water obtained to above-mentioned steps (2), obtain the waste water after fractionation by adsorption process; (4) add flocculation agent and/or coagulant aids in the waste water obtained to above-mentioned steps (3), precipitation, obtains the waste water after coagulation clarification process; (5) adopt the filtrate being loaded with microorganism to process the waste water that above-mentioned steps (4) obtains, obtain discharging/reuse water.Adopt Tube separators and cavitation air flotation system to carry out oily water separation in this technique, to oils removal effect low especially solubility oily substance, strengthen subsequent disposal difficulty.If by adding oil removing pretreatment technology before phenol recovery ammonia, not only can effectively remove oil-in-water class and solid suspended particle, and significantly improving phenol recovery ammonia efficiency, for subsequent disposal lays the foundation, reduce intractability, simplify processes technique.
Summary of the invention
The object of this invention is to provide the pretreatment process of a kind of Coal Chemical Industry height strong sewage oil removing.
Technical scheme of the present invention is: the pretreatment process of a kind of Coal Chemical Industry height strong sewage oil removing, and its concrete steps are as follows:
1. oil removal breakdown of emulsion: Coal Chemical Industry height strong sewage is entered oil removal breakdown of emulsion unit, the pH value regulating waste water is 2 ~ 4, then adds coagulant aids, the residence time 1 ~ 2h, the oil in water emulsion breakdown of emulsion in waste water is precipitated, and reaches the oily substances such as the alkane removed in waste water;
2. high performance membrane is separated: after oil removal breakdown of emulsion, waste water adjust ph is 3 ~ 6, and control temperature enters the membrane separation unit of film separation unit, removes the solid suspended particle in waste water.
Above-mentioned steps 1. in be linked by pH meter in pond and acid adding volume pump and regulate the pH value of waste water, the acid is wherein sulfuric acid or hydrochloric acid.
Preferably above-mentioned coagulant aids is polyacrylamide; The volume ratio adding quality and waste water of coagulant aids is 1 ~ 4mg/L, realizes " oil, water, slag " three separation.
Preferred steps 2. alkali added by middle adjust ph is sodium hydroxide or potassium hydroxide; Described temperature is 20 ~ 40 DEG C; Preferred waste water is 1 ~ 4h at the reaction time of membrane separation unit.
Film in preferably described membrane separation unit is Inorganic Nanofiltration Membranes.More preferably described Inorganic Nanofiltration Membranes is Al
2o
3nanofiltration membrane or TiO
2at least one in nanofiltration membrane; The aperture of Inorganic Nanofiltration Membranes is 0.22 ~ 0.8 μm.
The described sewage after oil removal breakdown of emulsion cell processing enters high performance membrane tripping device, and Inorganic Nanofiltration Membranes, with the use of at least one in hollow fiber form membrane module, tubular membrane component and plate type membrane component, most preferably selects hollow fiber form membrane module.
Beneficial effect:
(1) treatment process of the present invention, integrated artistic comprises oil removal breakdown of emulsion unit, high performance membrane separating unit.Waste water is through oil removal pre-treatment, and the clearance of oils reaches about 80%, and the clearance of solid suspended particle (as coal ash) reaches more than 25% up to 99%, COD clearance.
(2) after pretreatment, significantly improve follow-up phenol recovery ammonia efficiency, reduce intractability, simplify processes technique, effectively increases economic benefit.
Embodiment
Embodiment 1
The blue charcoal waste water in Xinjiang, concrete influent quality is in table 1.Waste water after oil removing pre-treatment, continues to enter phenol retrieving arrangement.
Oil removal breakdown of emulsion: Coal Chemical Industry height strong sewage is entered oil removal breakdown of emulsion unit, linked by pH meter in pond and acid adding volume pump and regulate the pH of waste water to be 2, wherein said acid is sulfuric acid; Add coagulant aids, coagulant aids is polyacrylamide, and often liter of waste water adds the amount 1mg of coagulant aids, realizes " oil, water, slag " three separation, reaction time: 1h.
High performance membrane is separated: waste water adjust ph after oil removal breakdown of emulsion, and control temperature enters film separation unit, removes the solid suspended particle in waste water.The pH regulating waste water is 3, and the alkali added as is sodium hydroxide; Temperature 20 DEG C; Select Al
2o
3nanofiltration membrane (hollow fiber film assembly), membrane pore size is 0.22 μm, reaction time: 1h.
Final process enters phenol retrieving arrangement, and phenol recovery catalyst adopts methyl iso-butyl ketone (MIBK), and extraction is than being 1:5.5, and extraction temperature 40 DEG C, the residence time is 1h.
Table 1 the present invention is used for the blue charcoal wastewater treatment in Xinjiang
Embodiment 2
Liaoning coal chemical industrial waste water, concrete influent quality is in table 2.Waste water after oil removing pre-treatment, continues to enter phenol retrieving arrangement.
Oil removal breakdown of emulsion: Coal Chemical Industry height strong sewage is entered oil removal breakdown of emulsion unit, linked by pH meter in pond and acid adding volume pump and regulate the pH of waste water to be 3, wherein said acid is hydrochloric acid; Add coagulant aids, coagulant aids is polyacrylamide, and its mass percentage concentration concentration is 0.01%, and often liter of waste water adds the amount 2.5mg of coagulant aids, realizes " oil, water, slag " three separation, reaction time: 1.5h.
High performance membrane is separated: waste water adjust ph after oil removal breakdown of emulsion, and control temperature enters film separation unit, removes the solid suspended particle in waste water.The pH regulating waste water is 4, and the alkali added as is sodium hydroxide; Temperature of reaction 30 DEG C; Select TiO
2nanofiltration membrane (tubular membrane component), membrane pore size is 0.45 μm, reaction time: 2.5h.
Final process enters phenol retrieving arrangement, and phenol recovery catalyst adopts methyl iso-butyl ketone (MIBK), and extraction is than being 1:5.5, and extraction temperature 40 DEG C, the residence time is 1h.
Table 2 the present invention is used for Liaoning coal chemical industrial waste water process
Embodiment 3
Yunnan coal chemical industrial waste water, concrete influent quality is in table 3.Waste water after oil removing pre-treatment, continues to enter phenol retrieving arrangement.
Oil removal breakdown of emulsion: Coal Chemical Industry height strong sewage is entered oil removal breakdown of emulsion unit, linked by pH meter in pond and acid adding volume pump and regulate the pH of waste water to be 4, wherein said acid is sulfuric acid; Add coagulant aids, coagulant aids is polyacrylamide, and its mass percentage concentration concentration is 0.01%, and often liter of waste water adds the amount 4mg of coagulant aids, realizes " oil, water, slag " three separation, reaction time: 2h.
High performance membrane is separated: waste water adjust ph after oil removal breakdown of emulsion, and control temperature enters film separation unit, removes the solid suspended particle in waste water.The pH regulating waste water is 6, and the alkali added as is sodium hydroxide; Temperature of reaction 40 DEG C; Select Al
2o
3nanofiltration membrane (hollow fiber film assembly), membrane pore size is 0.8 μm, reaction time: 4h.
Final process enters phenol retrieving arrangement, and phenol recovery catalyst adopts methyl iso-butyl ketone (MIBK), and extraction is than being 1:5.5, and extraction temperature 40 DEG C, the residence time is 1h.
Table 3 the present invention is used for Yunnan coal chemical industrial waste water process
Claims (7)
1. a pretreatment process for Coal Chemical Industry height strong sewage oil removing, its concrete steps are as follows:
1. oil removal breakdown of emulsion: Coal Chemical Industry height strong sewage is entered oil removal breakdown of emulsion unit, the pH value regulating waste water is 2 ~ 4, then adds coagulant aids, the residence time 1 ~ 2h, the oil in water emulsion breakdown of emulsion in waste water is precipitated;
2. high performance membrane is separated: after adjustment oil removal breakdown of emulsion, waste water ph is 3 ~ 6, and control temperature, enters membrane sepn membrane separation unit, removes the solid suspended particle in waste water.
2. pre-treatment according to claim 1, is characterized in that: step 1. in the logical acid added by pH value regulating waste water be sulfuric acid or hydrochloric acid.
3. according to pretreatment process according to claim 1, it is characterized in that: described coagulant aids is polyacrylamide; The volume ratio adding quality and waste water of coagulant aids is 1 ~ 4mg/L.
4. pretreatment process according to claim 1, is characterized in that alkali added by adjust ph is sodium hydroxide or potassium hydroxide during step 2.; Described temperature is 20 ~ 40 DEG C; Reaction time at membrane separation unit: 1 ~ 4h.
5. pretreatment process according to claim 1, is characterized in that: the film in described membrane separation unit is Inorganic Nanofiltration Membranes.
6. pretreatment process according to claim 1, is characterized in that described Inorganic Nanofiltration Membranes is Al
2o
3nanofiltration membrane or TiO
2at least one in nanofiltration membrane; The aperture of Inorganic Nanofiltration Membranes is 0.22 ~ 0.8 μm.
7. pretreatment process according to claim 1, what it is characterized in that Inorganic Nanofiltration Membranes is configured as at least one in hollow fiber form membrane module, tubular membrane component or plate type membrane component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584515.0A CN104261597A (en) | 2014-10-27 | 2014-10-27 | Pretreatment method for removing oil from high-concentration sewage in coal chemical industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584515.0A CN104261597A (en) | 2014-10-27 | 2014-10-27 | Pretreatment method for removing oil from high-concentration sewage in coal chemical industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104261597A true CN104261597A (en) | 2015-01-07 |
Family
ID=52153224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410584515.0A Pending CN104261597A (en) | 2014-10-27 | 2014-10-27 | Pretreatment method for removing oil from high-concentration sewage in coal chemical industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104261597A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016522A (en) * | 2015-07-06 | 2015-11-04 | 郑州大学综合设计研究院有限公司 | Film treatment process for fatty acid wastewater |
| CN105174552A (en) * | 2015-10-12 | 2015-12-23 | 南京工业大学 | Oil removal treatment method for high-concentration sewage in coal chemical industry |
| CN105668846A (en) * | 2016-01-15 | 2016-06-15 | 中国石油大学(华东) | Fine processing technology of coal chemical aromatics-containing wastewater |
| CN109534548A (en) * | 2018-12-15 | 2019-03-29 | 萍乡市华星环保工程技术有限公司 | A kind of technology of acidification-composite flocculation pretreatment coal chemical industrial waste water |
| CN115304222A (en) * | 2022-08-24 | 2022-11-08 | 南京工大环境科技有限公司 | Treatment process of oil-containing storage wastewater |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594143A (en) * | 2004-06-24 | 2005-03-16 | 武汉化工学院 | Treatment method for gas wash water |
| CN101565251A (en) * | 2009-05-26 | 2009-10-28 | 北京清大国华环保科技有限公司 | Technique for using composite demulsification-membrane method to treat high-concentration emulsified liquid waste water and device |
-
2014
- 2014-10-27 CN CN201410584515.0A patent/CN104261597A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594143A (en) * | 2004-06-24 | 2005-03-16 | 武汉化工学院 | Treatment method for gas wash water |
| CN101565251A (en) * | 2009-05-26 | 2009-10-28 | 北京清大国华环保科技有限公司 | Technique for using composite demulsification-membrane method to treat high-concentration emulsified liquid waste water and device |
Non-Patent Citations (1)
| Title |
|---|
| 张广超等: "碎煤加压气化废水的处理工艺及技术进展", 《化肥设计》, vol. 49, no. 3, 30 June 2011 (2011-06-30) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016522A (en) * | 2015-07-06 | 2015-11-04 | 郑州大学综合设计研究院有限公司 | Film treatment process for fatty acid wastewater |
| CN105016522B (en) * | 2015-07-06 | 2017-05-10 | 郑州大学综合设计研究院有限公司 | Film treatment process for fatty acid wastewater |
| CN105174552A (en) * | 2015-10-12 | 2015-12-23 | 南京工业大学 | Oil removal treatment method for high-concentration sewage in coal chemical industry |
| CN105668846A (en) * | 2016-01-15 | 2016-06-15 | 中国石油大学(华东) | Fine processing technology of coal chemical aromatics-containing wastewater |
| CN109534548A (en) * | 2018-12-15 | 2019-03-29 | 萍乡市华星环保工程技术有限公司 | A kind of technology of acidification-composite flocculation pretreatment coal chemical industrial waste water |
| CN115304222A (en) * | 2022-08-24 | 2022-11-08 | 南京工大环境科技有限公司 | Treatment process of oil-containing storage wastewater |
| CN115304222B (en) * | 2022-08-24 | 2023-08-15 | 南京工大环境科技有限公司 | Treatment process of oil-containing storage wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104445788B (en) | High slat-containing wastewater treatment for reuse zero-emission integrated technique | |
| CN105731706B (en) | Method and device for treating waste emulsion with extremely high concentration | |
| Konvensional | A review of oilfield wastewater treatment using membrane filtration over conventional technology | |
| KR101804555B1 (en) | WasteWater High-Class Treatment System to remove High-Density Pollutant and Method thereof | |
| CN102887596B (en) | Method and device for treating oil-containing emulsified wastewater or waste emulsion | |
| CN101508514B (en) | Zero discharge recycle treatment method for garbage leachate | |
| CN105540967A (en) | Processing method for reducing and recycling organic waste water and processing system | |
| CN104261597A (en) | Pretreatment method for removing oil from high-concentration sewage in coal chemical industry | |
| Mikhak et al. | Refinery and petrochemical wastewater treatment | |
| Wang et al. | Investigation of microfiltration for treatment of emulsified oily wastewater from the processing of petroleum products | |
| CN108059281A (en) | Membrane-process zero-discharge treatment technology for coal chemical industry wastewater | |
| CN104118973A (en) | Technique for processing reverse osmosis concentrated water | |
| CN204174044U (en) | Landfill leachate treatment and recycling system | |
| CN105174636A (en) | Recovery processing technology for printing and dyeing wastewater | |
| CN110526476A (en) | The method for handling comprehensive heavy metal wastewater thereby | |
| CN105540932A (en) | PCB waste water treatment process | |
| CN101560030A (en) | Method for realizing resource utilization of copper-containing waste water by electrolysis-electrodialysis united technology | |
| CN105776726A (en) | Treatment process of printing and dyeing wastewater in textile industry | |
| CN204281479U (en) | A kind for the treatment of system of coating wastewater | |
| CN203360192U (en) | Treatment device for difficultly degradable industrial wastewater | |
| CN104045200A (en) | Industrial wastewater comprehensive treatment system and technique | |
| CN104743732A (en) | Method for realizing zero emission and recycling of desulfurization waste water of power plant | |
| CN111825265A (en) | Oilfield produced water treatment method | |
| CN101486524A (en) | Comprehensive processing method for furfural production wastewater | |
| CN109019985A (en) | A kind of processing method of oil-containing heavy metal wastewater thereby industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |