CN113390091B - Method for treating organic strong acid dangerous waste liquid - Google Patents
Method for treating organic strong acid dangerous waste liquid Download PDFInfo
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- CN113390091B CN113390091B CN202110595586.0A CN202110595586A CN113390091B CN 113390091 B CN113390091 B CN 113390091B CN 202110595586 A CN202110595586 A CN 202110595586A CN 113390091 B CN113390091 B CN 113390091B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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Abstract
A method for disposing dangerous waste liquid of organic strong acid comprises selecting combustible dangerous waste liquid of organic strong acid with pH less than 4, sampling, observing whether the waste liquid reacts with water or not, and spraying the dangerous waste liquid of organic strong acid into a rotary kiln for harmless disposal through a diaphragm pump and a spray gun if the waste liquid does not react with water; reacting with water, continuously observing whether the organic acid is compatible with the engine oil, if the organic acid is not compatible with the engine oil, pumping the organic acid through a diaphragm pump, spraying the organic acid into a rotary kiln through a spray gun for harmless treatment, and pumping an engine oil lubricating pipeline and the spray gun before pumping the organic strong acid dangerous waste liquid; if the hazardous organic acid waste liquid is dissolved in the engine oil, the hazardous organic acid waste liquid is subpackaged into small packages, the weight of the hazardous organic acid waste liquid in each small package is controlled to be not more than 1kg, meanwhile, solid-state oil-containing residues or sludge is added, mixed and stirred into paste, and then the paste is put into a rotary kiln for harmless treatment.
Description
Technical Field
The invention belongs to the technical field of organic strong acid hazardous waste treatment, and particularly relates to a method for treating organic strong acid hazardous waste liquid.
Background
Generally, organic strong acid dangerous waste liquid needs to be subjected to harmless treatment through facilities such as high-temperature incineration, acid pickling and the like, and is discharged after reaching the standard, but a uniform pretreatment scheme is not formed all the time. At present, harmless feeding treatment is generally carried out in a mode of subpackaging into small packages, 200mL, 500mL and 1L of dangerous waste liquid bottled by glass bottles with the same volume are directly placed into a carton for packaging and sealed by an adhesive tape in the conventional small packages, but the subpackaging treatment mode of the small packages prolongs treatment time, increases subpackaging cost, is easy to generate deflagration, and has obvious fluctuation of online monitoring CO data.
Disclosure of Invention
In order to solve the problems, the invention provides a method for treating the organic strong acid dangerous waste liquid, which effectively shortens the treatment time of the organic strong acid dangerous waste liquid, improves the treatment efficiency of a system, and avoids the fluctuation of online monitoring CO data.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for treating dangerous waste liquid of organic strong acid is characterized by comprising the following steps:
s1, collecting hazardous waste, sampling and carrying out fingerprint analysis, wherein the content of the fingerprint analysis comprises the state, pH value and flammability of the hazardous waste, and the flammable organic strong acid hazardous waste liquid with pH value less than 4 is selected for next treatment;
s2, sampling the organic strong acid dangerous waste liquid selected in the S1, observing whether the sample reacts with water or not, and if the sample does not react with water, pumping the organic strong acid dangerous waste liquid through a diaphragm pump and spraying the organic strong acid dangerous waste liquid into a rotary kiln through a spray gun for harmless treatment;
s3, if the sample reacts with water in S2, sampling again, observing whether the sample is compatible with the engine oil, if not, pumping through a diaphragm pump, spraying into a rotary kiln through a spray gun for harmless treatment, and before pumping the organic strong acid dangerous waste liquid, pumping an engine oil lubricating pipeline and the spray gun;
and (S4) if the samples in the S3 are dissolved with the engine oil, subpackaging the organic strong acid dangerous waste liquid into small packages, controlling the weight of the organic strong acid dangerous waste liquid in each small package to be not more than 1kg, adding solid oil-containing residue or sludge, mixing and stirring into paste, and then feeding the paste into a rotary kiln through a barreled lifter for harmless treatment.
And when S2 is sampled, 30-50mL of the organic strong acid hazardous waste liquid is taken by using a 100mL beaker.
S2, whether the sample reacts with water or not is judged, clear water is added into the organic strong acid dangerous waste liquid sample, a glass rod is slowly stirred clockwise at a constant speed in a beaker, a thermometer is placed in the beaker, whether bubbles are generated or not and the thermometer index changes are observed through a visual method, the bubbles are continuously generated or the thermometer index changes by more than 3 ℃ before and after the clear water is added, the temperature continuously rises, and one phenomenon occurs, so that the organic strong acid dangerous waste liquid reacts with the water.
Observing whether the sample is compatible with the engine oil or not in S3, adding the engine oil into the sample, uniformly stirring the sample in a beaker by using a glass rod, taking the mixed sample, oscillating and standing for 1-2min, and obviously layering, wherein the organic strong acid dangerous waste liquid is not compatible with the engine oil; if the sample and the engine oil are not obviously layered and the glass rod is uniformly mixed after disturbance, the organic strong acid hazardous waste liquid and the engine oil are dissolved mutually.
The engine oil in the S3 and S4 is waste engine oil.
The organic strong acid is one or more of amino-xanthic acid with pH less than 4, glycolic acid, citric acid and ethylene diamine tetraacetic acid.
The invention has the beneficial effects that: the method for treating the organic strong acid hazardous waste liquid effectively shortens the treatment time of the conventional organic strong acid hazardous waste liquid, improves the treatment efficiency of a system, solves the problem of liquid deflagration when the conventional organic strong acid hazardous waste liquid is directly put into a rotary kiln for high-temperature incineration innocent treatment by classification treatment, avoids the occurrence of deflagration phenomenon, improves the safety coefficient, and effectively avoids online monitoring of CO data fluctuation.
Drawings
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is a graph comparing CO monitoring results after treatment with the treatment method of the present invention and the prior art treatment method.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
As shown in fig. 1, a method for disposing hazardous organic strong acid waste liquid comprises the following steps:
s1, collecting hazardous waste, sampling and carrying out fingerprint analysis, wherein the content of the fingerprint analysis comprises the state, pH value and flammability of the hazardous waste, recording the analysis result, and selecting combustible organic strong acid hazardous waste liquid with pH value less than 4 for next treatment;
s2, sampling the organic strong acid dangerous waste liquid selected in the S1, taking 30-50mL of the organic strong acid dangerous waste liquid by using a 100mL beaker during sampling, adding clear water into the organic strong acid dangerous waste liquid sample, slowly stirring the glass rod in the beaker at a constant speed clockwise, placing a thermometer in the beaker, observing whether bubbles are generated or not and the temperature indicator changes by a visual method, continuously generating bubbles or continuously changing the temperature indicator by more than 3 ℃ before and after adding clear water and continuously rising the temperature, and judging that the organic strong acid dangerous waste liquid reacts with water if one of the bubbles or the temperature indicator changes continuously; if the organic strong acid hazardous waste liquid does not react with water, the organic strong acid hazardous waste liquid is integrated into a 50L glue barrel, is extracted through a diaphragm pump and is sprayed into a rotary kiln through a spray gun for harmless treatment, and the organic strong acid hazardous waste liquid is integrated into the 50L glue barrel, so that the subsequent transfer is facilitated, the harmless treatment is carried out, and certainly, other containers with proper sizes can be selected for temporary storage or transfer;
and (4) the flammability judgment standard is as follows:
firstly, a small amount of sample is taken by a sampling spoon to be close to the flame, and the sample is kept at a distance of about 1.3cm from the flame (the sample is never contacted with the flame, if the sample is burnt, the unknown dangerous waste is extremely easy to burn, and the flash point of the unknown dangerous waste is probably lower than 28 ℃;
secondly, enabling the sample to be in short-time contact with flame and immediately moving away, if the sample is burnt and can keep a stable burning state, the unknown hazardous waste is a flammable article, and the flash point of the flammable article is approximately 28-60 ℃;
thirdly, the sample is placed in flame for 2 seconds and then removed, if the sample can keep a combustion state, the unknown dangerous waste is between flammable and combustible materials, and the approximate range of the flash point of the unknown dangerous waste is 60-93 ℃;
putting the sample in flame, if the sample is burnt only when contacting with the flame or is put in the flame for more than 2s to keep a burning state, the dangerous waste is an inflammable article, and the flash point of the dangerous waste is probably higher than 93 ℃;
s3, if the sample reacts with water in S2, re-sampling the sample from the organic strong acid dangerous waste liquid to be treated into another 100mL beaker, adding engine oil into the sample, stirring the sample in the beaker at a constant speed by a glass rod, continuously observing whether the sample is dissolved with the engine oil, taking about 15mL of the mixed sample to a test tube, oscillating and standing for 1-2min, and observing that the organic strong acid dangerous waste liquid is not dissolved with the engine oil if obvious layering occurs; if the sample and the engine oil are not obviously layered and the glass rod is uniformly mixed after being disturbed, the organic strong acid dangerous waste liquid and the engine oil are dissolved mutually; if the waste liquid is not compatible with the engine oil, the waste liquid is extracted through a diaphragm pump and sprayed into a rotary kiln through a spray gun for harmless treatment, before the dangerous waste liquid of the organic strong acid is extracted, an engine oil lubricating pipeline and the spray gun are firstly extracted, the extracted engine oil can form a thin engine oil protective film in the diaphragm pump pipeline and the spray gun, the residual materials in the diaphragm pump pipeline and the spray gun pipeline and the dangerous waste liquid of the organic strong acid to be extracted are prevented from undergoing reactions such as hydration, polymerization, neutralization and the like, and meanwhile, the corrosion to the pipeline and spray gun equipment is slowed down;
and (3) if the samples in the S4 and S3 are dissolved with the engine oil, subpackaging the organic strong acid dangerous waste liquid into small packages, controlling the weight of each small packaged organic strong acid dangerous waste liquid to be not more than 1kg, adding solid oil-containing residue or sludge, mixing and stirring into paste, and then putting into a rotary kiln for harmless treatment. Since the liquid has the highest possibility of deflagration, the liquid state of the organic strong acid hazardous waste liquid is processed into a pasty solid state by using solid oil-containing residues or sludge, so that the deflagration possibility is reduced, the pasty state is better, but the deflagration-free state can be prepared by considering the operation time and the operation cost, and the consistency is not required to be excessively pursued.
Pure machine oil can be selected for use to the machine oil in S3, S4, also can select for use useless machine oil, uses useless machine oil firstly to recycle the discarded object, has dealt with useless (useless machine oil) of danger, secondly has practiced thrift the cost, kills two birds with one stone.
The organic strong acid is one or more of amino-xanthic acid with pH less than 4, glycolic acid, citric acid and ethylene diamine tetraacetic acid.
The dangerous waste of organic strong acid class waste liquid after categorised screening can obtain safe efficient and handle, has effectually shortened the processing time of current dangerous waste liquid of organic strong acid class, has improved the processing efficiency of system, and categorised processing has solved the problem that liquid knocks when current direct input rotary kiln carries out high temperature incineration innocent treatment, has avoided the emergence of detonation phenomenon, improves factor of safety, and effectively avoids on-line monitoring CO data fluctuation, as shown in fig. 2.
Claims (6)
1. A method for treating dangerous waste liquid of organic strong acid is characterized by comprising the following steps:
s1, collecting hazardous waste, sampling and carrying out fingerprint analysis, wherein the content of the fingerprint analysis comprises the state, pH value and flammability of the hazardous waste, and the flammable organic strong acid hazardous waste liquid with pH value less than 4 is selected for next treatment;
s2, sampling the organic strong acid dangerous waste liquid selected in the S1, observing whether the sample reacts with water or not, and if the sample does not react with water, pumping the organic strong acid dangerous waste liquid through a diaphragm pump and spraying the organic strong acid dangerous waste liquid into a rotary kiln through a spray gun for harmless treatment;
s3, if the sample reacts with water in S2, sampling again, observing whether the sample is compatible with the engine oil, if not, pumping through a diaphragm pump, spraying into a rotary kiln through a spray gun for harmless treatment, and pumping an engine oil lubricating pipeline and the spray gun before pumping the organic strong acid hazardous waste liquid;
and (3) if the samples in the S4 and S3 are dissolved with the engine oil, subpackaging the organic strong acid dangerous waste liquid into small packages, controlling the weight of each small packaged organic strong acid dangerous waste liquid to be not more than 1kg, adding solid oil-containing residue or sludge, mixing and stirring into paste, and then feeding the paste into a rotary kiln for harmless treatment through a barreled lifter.
2. The method for disposing hazardous waste liquid of organic strong acid as claimed in claim 1, wherein a 100mL beaker is used to take 30-50mL of hazardous waste liquid of organic strong acid when sampling S2.
3. The method as claimed in claim 1, wherein the sample S2 is reacted with water, clear water is added to the sample of the organic strong acid hazardous waste liquid, a glass rod is slowly stirred clockwise in a beaker at a constant speed, a thermometer is placed in the beaker, whether bubbles are generated or not and the thermometer index changes are observed by visual method, the bubbles are continuously generated or the thermometer index changes by more than 3 ℃ before and after the clear water is added, and the temperature continuously rises, and when one of the two phenomena occurs, the organic strong acid hazardous waste liquid is reacted with water.
4. The method for disposing hazardous waste liquid of organic strong acid according to claim 1, wherein in S3, observing whether the sample is compatible with the engine oil, adding the engine oil into the sample, stirring the sample with a glass rod in a beaker at a constant speed, shaking and standing the mixed sample for 1-2min, wherein obvious layering occurs, and the hazardous waste liquid of organic strong acid is not compatible with the engine oil; if the sample and the engine oil are not obviously layered and the glass rod is uniformly mixed after being disturbed, the organic strong acid dangerous waste liquid and the engine oil are dissolved mutually.
5. The method as claimed in claim 1, wherein the engine oil in S3 or S4 is used engine oil.
6. The method for disposing hazardous organic strong acid waste liquid according to claim 1, wherein: the organic strong acid is one or more of amino-xanthic acid with pH less than 4, glycolic acid, citric acid and ethylene diamine tetraacetic acid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1397309A1 (en) * | 2001-06-19 | 2004-03-17 | Pulse, LLC | Treatment of organic waste and sludge |
| JP3887240B2 (en) * | 2002-01-28 | 2007-02-28 | 出光興産株式会社 | Industrial combustion equipment for treating waste liquid and waste liquid treatment method using the same |
| JP2008025876A (en) * | 2006-07-19 | 2008-02-07 | Babcock & Wilcox Volund Aps | Combustion treatment method for waste liquid |
| JP3956236B1 (en) * | 2006-08-22 | 2007-08-08 | Ｎｅｃファシリティーズ株式会社 | Experimental wastewater treatment method |
| CN103241886B (en) * | 2013-05-20 | 2014-07-09 | 彭万旺 | Treatment process of wastewater containing organic matters |
| CN103438465A (en) * | 2013-08-21 | 2013-12-11 | 江西麻山化工有限公司 | Acid organic wastewater incineration method |
| CN103453533B (en) * | 2013-08-28 | 2016-01-13 | 大连东泰产业废弃物处理有限公司 | A kind of organic liquid waste and cement kiln coexist the preprocess method put |
| CN104418454B (en) * | 2013-09-05 | 2016-07-06 | 彭万旺 | A kind of processing method of organic wastewater |
| CN111484195A (en) * | 2020-04-13 | 2020-08-04 | 南京卓越环保科技有限公司 | Harmless treatment method for high-concentration pesticide organic waste liquid |
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