CN105060560A - Waste lubricating oil regeneration production waste water treatment method - Google Patents
Waste lubricating oil regeneration production waste water treatment method Download PDFInfo
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- CN105060560A CN105060560A CN201510472478.9A CN201510472478A CN105060560A CN 105060560 A CN105060560 A CN 105060560A CN 201510472478 A CN201510472478 A CN 201510472478A CN 105060560 A CN105060560 A CN 105060560A
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Abstract
The invention discloses a waste lubricating oil regeneration production waste water treatment method. The method comprises 1, dropwisely adding 5-10mL of a sodium dodecyl benzene sulfonate solution with a concentration of 40-150mg/L into 1L of lubricating oil regeneration production waste water subjected to oil removal, and carrying out aeration when the dropwise addition process is started, wherein an aeration rate is 10-60L/h, 2, when the dropwise addition amount is 1/4-1/2 the total dropwise addtion amount, adding 10-30g of hydrotalcite powder of 50-80 meshes into the waste water by 6-8 steps, and simultaneously, keeping aeration, 3, after dropwise addition, carrying out aeration for 2-3h, and 4, after aeration, carrying out solid-liquid separation to remove precipitates and to obtain a supernatant, and adding acid into the supernatant until pH is 7 so that waste treatment is finished. The method can effectively remove organic sulfur compounds and inorganic ammonium in waste lubricating oil regeneration production waste water, can realize useful substance recovery and basically does not produce secondary waste liquid and waste. The method is simple and efficient and has a low cost and stable effects.
Description
Technical field
The invention belongs to field of environment protection, be specifically related to Wastewater Treatment field, particularly relate to a kind of waste lubricant oil regeneration production wastewater treatment method.
Background technology
Along with expanding economy and machinery, the increasing of vehicle, the application of lubricating oil is increasingly extensive.Lubricating oil can go bad in mechanical transmission and engine lubrication process, after the lubricating oil on the devices such as cooling, transmission, thermal treatment uses for some time, lubrication and performance index thereof are reduced to a certain degree just must change oil, and oil change can produce the filthy wet goods of a large amount of waste hydraulic oils, gear oil and washing parts.These waste lubricating oils are often directly outwelled as refuse or are burnt as fuel, and this, in energy shortage and environmental pollution day by day serious today, not only causes the significant wastage of resource, and exacerbate environmental pollution.Owing to also containing a large amount of, of great value lubricant base, therefore waste lubricating oil recovery and reusing and recycling in waste lubricating oil, be both conducive to economizing on resources, turn waste into wealth, petroleum resources are fully used, can also prevent the pollution of the environment, have very considerable economic benefit and social benefit.
At present, the reclaiming process of domestic waste lubricating oil mainly comprises distillation-pickling-clay-filtered technique, sedimentation-pickling-clay-filtered technique, sedimentation-distillation-pickling-calcium soil process for refining etc., and novel technique is towards Hydrofining Technology future development.At present when waste lubricant oil regeneration is produced, raw material needs through processes such as hydrofining, air lift, alkali cleanings to promote the quality of lubricating oil oil product, qualified high quality lubricating oil oil product is obtained after refining, also produce a large amount of waste water simultaneously, containing the Chemical Composition such as organic sulfide, inorganic ammonium salt in waste water, and pH is usually more than 10, such direct discharging of waste water can cause very serious pollution to environment, is also the waste to resource simultaneously.And there is no on the market now specially for the treatment technology of this waste water.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of waste lubricant oil regeneration production wastewater treatment method, effectively can either remove the inorganic ammonium salt in waste water and organic sulfide, reduce environmental pollution; The recovery to useful matter can be realized again, efficent use of resources.
A kind of waste lubricant oil regeneration production wastewater treatment method, comprises the following steps:
The Sodium dodecylbenzene sulfonate solution that 5 ~ 10mL concentration is 40 ~ 150mg/L is dropwise added in the 1L waste lubricant oil regeneration factory effluent after oil removing, aeration is started (namely while instillation, aeration is started when starting to instill), aeration rate is 10 ~ 60L/h; When Sodium dodecylbenzene sulfonate solution infusion volume is 1/4 ~ 1/2 of total infusion volume, starts to divide in waste water to add 10 ~ 30g, 50 ~ 80 object hydrotalcite powder for 6 ~ 8 times, keep aeration simultaneously; After being added dropwise to complete, continue aeration 2 ~ 3h; After aeration terminates, solid-liquid separation precipitates, and obtains supernatant liquor, and acid neutralization, to neutral, complete wastewater treatment, the waste water after having processed, can directly discharge.
Described oil removing is oil removal treatment method conventional in prior art, such as, and gravitational separation process etc.
The pH value of described waste lubricant oil regeneration factory effluent is greater than 10, and the temperature of described waste lubricant oil regeneration factory effluent is 20 ~ 50 DEG C.Due in industrial production, described waste lubricant oil regeneration factory effluent is passed into continuously in treatment unit to carry out continuous wastewater treatment, therefore, in whole wastewater treatment process, the pH value of described waste lubricant oil regeneration factory effluent can maintain more than 10 always, and temperature maintains 20 ~ 50 DEG C.If in actual treatment, above-mentioned pH value and temperature cannot being maintained, by adding the mode adjust ph of alkali lye, temperature can be regulated by the mode of heating.
In described waste lubricant oil regeneration factory effluent, the concentration of ammonia nitrogen is 500 ~ 2000mg/L, and the concentration of organic sulfide is 50 ~ 150mg/L.
Describedly dropwise add, its object is mainly the instantaneous concentration of control surface promoting agent Sodium dodecylbenzene sulfonate solution in system, therefore, dropwise adds lentamente in principle.Consider the impact of the speed of dropping for total aeration time, preferably take 5 ~ 10 droplets/minute, saving resource as far as possible while realizing stripping effect.
In preferred technical scheme, total infusion volume of described Sodium dodecylbenzene sulfonate solution is 10mL, and concentration is 150mg/L.
In preferred technical scheme, described aeration rate is 60L/h.
Described hydrotalcite can be commercially available commodity, also can prepare according to prior art, and its technology of preparing is well-known.Hydrotalcite chemical structure of general formula is: [M
2+ 1-xm
3+ x(OH)
2]
x+[(A
n-)
x/nmH
2o], wherein M
2+for Mg
2+, Ni
2+, Mn
2+, Zn
2+, Ca
2+, Fe
2+, Cu
2+deng any one in divalent metal; M
3+for Al
3+, Cr
3+, Fe
3+, Co
3+deng any one in trivalent metal cation; A
n-for negatively charged ion, as CO
3 2-, NO
3 -, Cl
-, OH
-, SO
4 2-, PO
4 3-deng any one in mineral ion; X=0.5 ~ 0.15; M
2+/ M
3+=1 ~ 5.
In preferred technical scheme, described hydrotalcite is magnesium aluminum-hydrotalcite.
In preferred technical scheme, the total amount of described hydrotalcite powder is 30g.
In preferred technical scheme, described acid neutralization, to neutral, be working concentration is that the salt acid for adjusting pH value of 1 ~ 2mol/L is to neutral.
The waste water adopted before and after the inventive method process is detected, finds: after the inventive method process, ammonium clearance is up to more than 98%, and the clearance of organic sulfide is up to more than 99%, and the waste water after process reaches emission standard.
In the inventive method, the method adopting surfactant sodium dodecyl base benzene sulfonic acid sodium salt solution to participate in stripping removes the Inorganic Ammonium in waste water, specifically, add surfactant sodium dodecyl base benzene sulfonic acid sodium salt solution by the mode dripped and add the method for hydrotalcite simultaneously, can the instantaneous concentration of control surface promoting agent Sodium dodecylbenzene sulfonate solution in system effectively, avoid producing foam at liquid level, strengthen gas-liquid mass transfer performance, effectively improve free state ammonia rate of mass transfer, thus contribute to stripping and efficiently remove Inorganic Ammonium in waste water.Further, under aeration agitation, add while hydrotalcite powder, Sodium dodecylbenzene sulfonate can also be made to be switched to the organic micella of lamella intermediate formation of hydrotalcite, thus machine sulfide formation precipitation can be adsorbed with, through solid-liquid separation precipitation, the organic sulfide in waste water can be removed; Discharge supernatant liquor, acid neutralization, to neutral, completes wastewater treatment.
Compared with prior art, the present invention has following useful technique effect:
Provide the method processing described waste lubricant oil regeneration factory effluent, effectively can remove the organic sulfide in waste lubricant oil regeneration factory effluent and Inorganic Ammonium, make the waste water after processing reach emission standard; And the ammonia that stripping Inorganic Ammonium produces can be recycled, the surfactant sodium dodecyl base benzene sulfonic acid sodium salt added in wastewater treatment and hydrotalcite, by the precipitation formed with organic sulfide, also can be recycled, efficiently utilize resource; Further, whole wastewater treatment process can not produce secondary pollution.The inventive method is simple, efficient, cost is low, effect stability.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
In following examples, adopt Whitfield's ointment spectrophotometry HJ536-2009 to measure ammonia nitrogen, adopt total organic carbon analyzer to measure organic sulfide.
Waste lubricant oil regeneration factory effluent in following examples, gravitational separation process all has conveniently carried out oil removal treatment, and pH value is greater than 10, and temperature is 20 ~ 50 DEG C, wherein the concentration of ammonia nitrogen is 500 ~ 2000mg/L, and the concentration of organic sulfide is 50 ~ 150mg/L.
Embodiment 1
Waste lubricant oil regeneration factory effluent after oil removing, water quality situation is: pH is 11.5, water temperature 49 DEG C, ammonia nitrogen 1850mg/L, and the concentration of organic sulfide is 137mg/L.
In the 1L waste lubricant oil regeneration factory effluent after oil removing with the speed of 5 droplets/minute dropwise (generally often drip is 1/20th milliliter) add the Sodium dodecylbenzene sulfonate solution that 10mL concentration is 40mg/L, aeration is started, aeration rate 60L/h when starting to instill; When infusion volume is 1/2 of total infusion volume, start to divide in waste water to add 30g, the commercially available magnesium aluminum-hydrotalcite powder of 80 object for 8 times, after being added dropwise to complete, continue aeration 3h, aeration terminates postprecipitation, solid-liquid separation, and the hydrochloric acid that supernatant liquor adds 2mol/L is neutralized to neutrality, be the waste water processed, can directly discharge.
Waste water after process in embodiment 1 is detected, finds: the clearance of ammonium ion reaches 96.2%, and the clearance of organic sulfide is 98.2%, can directly discharge.
Embodiment 2
Waste lubricant oil regeneration factory effluent after oil removing, water quality situation is: pH is 10.5, water temperature 48 DEG C, ammonia nitrogen 580mg/L, and the concentration of organic sulfide is 65mg/L.
In the 1L waste lubricant oil regeneration factory effluent after oil removing with the speed of 10 droplets/minute dropwise (generally often drip is 1/20th milliliter) add the Sodium dodecylbenzene sulfonate solution that 5mL concentration is 150mg/L, aeration is started, aeration rate 10L/h when starting to instill; When infusion volume is 1/4 of total infusion volume, start to divide in waste water to add 10g, the commercially available zinc-aluminum hydrotalcite powder of 50 object for 6 times, after being added dropwise to complete, continue aeration 2h, aeration terminates postprecipitation, solid-liquid separation, and the hydrochloric acid that supernatant liquor adds 1mol/L is neutralized to neutrality, be the waste water processed, can directly discharge.
Waste water after process in embodiment 2 is detected, finds: the clearance of ammonium ion reaches 92.6%, and the clearance of organic sulfide is 93.5%, can directly discharge.
Embodiment 3
Waste lubricant oil regeneration factory effluent after oil removing, water quality situation is: pH is 11, water temperature 50 DEG C, ammonia nitrogen 1980mg/L, and the concentration of organic sulfide is 146mg/L.
In the 1L waste lubricant oil regeneration factory effluent after oil removing with the speed of 6 droplets/minute dropwise (generally often drip is 1/20th milliliter) add the Sodium dodecylbenzene sulfonate solution that 8mL concentration is 100mg/L, aeration is started, aeration rate 60L/h when starting to instill; When infusion volume is 1/2 of total infusion volume, start to divide in waste water to add 30g, the commercially available magnesium aluminum-hydrotalcite powder of 80 object for 8 times, after being added dropwise to complete, continue aeration 3h, aeration terminates postprecipitation, solid-liquid separation, and the hydrochloric acid that supernatant liquor adds 2mol/L is neutralized to neutrality, be the waste water processed, can directly discharge.
Waste water after process in embodiment 3 is detected, finds: the clearance of ammonium ion reaches 95.3%, and the clearance of organic sulfide is 96.5%, can directly discharge.
Embodiment 4
Waste lubricant oil regeneration factory effluent after oil removing, water quality situation is: pH is 11.5, water temperature 49 DEG C, ammonia nitrogen 1790mg/L, and the concentration of organic sulfide is 149mg/L.
In the 1L waste lubricant oil regeneration factory effluent after oil removing with the speed of 6 droplets/minute dropwise (generally often drip is 1/20th milliliter) add the Sodium dodecylbenzene sulfonate solution that 10mL concentration is 150mg/L, aeration is started, aeration rate 60L/h when starting to instill; When infusion volume is 1/2 of total infusion volume, start to divide in waste water to add 30g, the commercially available magnesium aluminum-hydrotalcite powder of 80 object for 8 times, after being added dropwise to complete, continue aeration 3h, aeration terminates postprecipitation, solid-liquid separation, and the hydrochloric acid that supernatant liquor adds 1mol/L is neutralized to neutrality, be the waste water processed, can directly discharge.
Waste water before and after processing in embodiment 4 is detected, finds: the clearance of ammonium ion reaches 98.2%, and the clearance of organic sulfide is 99.5%, can directly discharge.
One skilled in the art will understand that and the foregoing is only several embodiments of the present invention, the present invention is not limited to this.It should be pointed out that for the person of ordinary skill of the art, many distortion and improvement can also be made, allly do not exceed distortion described in claim or improve and all should be considered as protection scope of the present invention.
Claims (7)
1. a waste lubricant oil regeneration production wastewater treatment method, comprises the following steps:
In the 1L waste lubricant oil regeneration factory effluent after oil removing, dropwise add the Sodium dodecylbenzene sulfonate solution that 5 ~ 10mL concentration is 40 ~ 150mg/L, start aeration while instillation, aeration rate is 10 ~ 60L/h; When the infusion volume of Sodium dodecylbenzene sulfonate solution is 1/4 ~ 1/2 of total infusion volume, starts to divide in waste water to add 10 ~ 30g, 50 ~ 80 object hydrotalcite powder for 6 ~ 8 times, keep aeration simultaneously; After being added dropwise to complete, continue aeration 2 ~ 3h; After aeration terminates, solid-liquid separation precipitates, and obtains supernatant liquor, and acid neutralization, to neutral, completes wastewater treatment.
2. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 1, it is characterized in that, the pH value of described waste lubricant oil regeneration factory effluent is greater than 10, and the temperature of described waste lubricant oil regeneration factory effluent is 20 ~ 50 DEG C.
3. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 1, it is characterized in that, in described waste lubricant oil regeneration factory effluent, the concentration of ammonia nitrogen is 500 ~ 2000mg/L, and the concentration of organic sulfide is 50 ~ 150mg/L.
4. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 1, it is characterized in that, total infusion volume of described Sodium dodecylbenzene sulfonate solution is 10mL, and concentration is 150mg/L.
5. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 1, it is characterized in that, described aeration rate is 60L/h.
6. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 1, it is characterized in that, described hydrotalcite is magnesium aluminum-hydrotalcite.
7. waste lubricant oil regeneration production wastewater treatment method as claimed in claim 6, it is characterized in that, the total amount of described hydrotalcite powder is 30g.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811282A (en) * | 2016-12-09 | 2017-06-09 | 陈维国 | A kind of potent waste lubricating oil cleanser |
| CN108862835A (en) * | 2018-06-26 | 2018-11-23 | 杭州绿环保技术有限公司 | A kind of processing system of aircraft engine oil waste water |
Citations (4)
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|---|---|---|---|---|
| CN102863043A (en) * | 2012-09-19 | 2013-01-09 | 常州大学 | Organic hydrotalcite synthesis and wastewater treatment integrated technique |
| CN102863044A (en) * | 2012-09-19 | 2013-01-09 | 常州大学 | Method for synchronously processing washing wastewater and organic chemical industrial wastewater |
| CN102976517A (en) * | 2012-11-28 | 2013-03-20 | 常州大学 | Method for treating industrial pickling wastewater |
| CN103263892A (en) * | 2013-05-31 | 2013-08-28 | 北京化工大学 | Preparation and application of chromotropic acid intercalated hydrotalcite composite material |
-
2015
- 2015-08-05 CN CN201510472478.9A patent/CN105060560B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863043A (en) * | 2012-09-19 | 2013-01-09 | 常州大学 | Organic hydrotalcite synthesis and wastewater treatment integrated technique |
| CN102863044A (en) * | 2012-09-19 | 2013-01-09 | 常州大学 | Method for synchronously processing washing wastewater and organic chemical industrial wastewater |
| CN102976517A (en) * | 2012-11-28 | 2013-03-20 | 常州大学 | Method for treating industrial pickling wastewater |
| CN103263892A (en) * | 2013-05-31 | 2013-08-28 | 北京化工大学 | Preparation and application of chromotropic acid intercalated hydrotalcite composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106811282A (en) * | 2016-12-09 | 2017-06-09 | 陈维国 | A kind of potent waste lubricating oil cleanser |
| CN108862835A (en) * | 2018-06-26 | 2018-11-23 | 杭州绿环保技术有限公司 | A kind of processing system of aircraft engine oil waste water |
| CN108862835B (en) * | 2018-06-26 | 2021-02-12 | 杭州绿一环保技术有限公司 | Processing system of aircraft engine oil waste water |
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| CN105060560B (en) | 2017-02-22 |
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Effective date of registration: 20220125 Address after: 213155 No. 88, Daru mu, Wuxiang village committee, Huangli Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: Jiangsu Zhongwu Changrun Huanneng Technology Co.,Ltd. Address before: 213155 Huang Li Zhen Wu Xiang Cun, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CHANGRUN PETROLEUM Co.,Ltd. |
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