CN108218013A - A kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution - Google Patents
A kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution Download PDFInfo
- Publication number
- CN108218013A CN108218013A CN201611137595.0A CN201611137595A CN108218013A CN 108218013 A CN108218013 A CN 108218013A CN 201611137595 A CN201611137595 A CN 201611137595A CN 108218013 A CN108218013 A CN 108218013A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- pail pack
- waste liquid
- waste
- adds
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/083—Removing scrap from containers, e.g. removing labels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Because hazardous waste pail pack is mainly used to store the chemical products such as all kinds of organic solvent slops, acid-base property, corrosivity.After use, it arbitrarily discards or air storage can bring air pollution to surrounding enviroment, can generate pollution to water and soil again with rainwater leaching, such as cannot properly dispose, certain harm can be generated to environment and health.Therefore the internal residual object of these pail packs that give up is cleaned, and is recycled after carrying out harmless treatment to cleaning waste liquid, can not only economized on resources and the energy, and be conducive to preserve the ecological environment.The method of the present invention includes following steps：Reject the pail pack being difficult to clean；Extract remaining raffinate in bucket；Primary cleaning；Secondary cleaning；It is outer after pail pack exterior clean to sell or use by oneself；COD in chlorine dioxide collaboration Fenton reagent oxidation removal waste liquid；Chemical precipitation method ammonia nitrogen removal；Flocculating setting removes total phosphorus；Heavy metal in flocculating setting removal waste liquid.The present invention is used for the processing of the cleaning waste liquid of chemical pail pack.
Description
Technical field
The present invention relates to the processing methods of waste liquid after a kind of cleaning of hazardous waste pail pack and cleaning.
Background technology
With the continuous development of industrial economy, the demand of pail pack is increasingly risen, can also generate quantity therewith every year
Huge useless pail pack.Useless pail pack generally there are get rusty, deform, the internal bond dregs of fat or phenomena such as chemicals, when it is given up
After abandoning, these residues left will cause environment very big pollution.Therefore, it in order to improve the effective rate of utilization of resource, drops
Low energy consumption, the internal residual object of the pail pack that give up to these recycle after cleaning, and can not only economize on resources and the energy, subtract
Few production cost, and be conducive to preserve the ecological environment.In order to avoid polluting environment, the waste liquid generated after useless pail pack cleaning needs
It can just be discharged after carrying out harmless treatment.
Invention content
The processing of waste liquid after the object of the present invention is to provide a kind of cleaning of hazardous waste pail pack and cleaning
Method.
First, the specific cleaning of pail pack：
（1）It rejects packaging severe toxicity and is difficult to clean or cleans pail pack of high cost, it is impossible to which the pail pack of cleaning, which crushes, to be burnt
It burns or is burned after being dissolved neutralization using spent acid.（2）Whether each pail pack in have remaining raffinate, extract remaining in bucket if checking
Raffinate.（3）Primary cleaning.The chain of different-diameter is first added in pail pack to be cleaned to remove and help corner in cask washing
Place, then adds low viscosity oiliness solvent slop（Hazardous waste）20L tightens bung hole, and carrys out back rotation pail pack, after cleaning
Solvent slop in pail pack is transferred in next group of pail pack to be cleaned, deficiency supplement can send burning after losing cleaning action
Stove is disposed.（4）Secondary cleaning.Chain is added in into the pail pack for treat secondary cleaning, then adds in the aqueous solution containing cleaning agent
In purged and packed bucket.Cleaning waste water equally can be recycled, not outer row.If water can be used after losing cleaning action in cleaning waste water
Processing or incineration disposal.It is finally cleaned 2 ~ 3 times with proper amount of clear water, the pH of cleaning solution is made to drain the residual water in bucket close to 7
For use.（5）It is outer after pail pack exterior clean to sell or use by oneself.Pail pack exterior washings are done using clean rag and clear water
Only, it can be cleaned when necessary with jetting machine.Determine that pail pack inside and outside cleans up rear foreign, bucket is interior without remnants'
After water, it can sell or use by oneself outside.
2nd, the treatment process of waste liquid is cleaned：
（1）COD in Fenton reagent oxidizing process removal waste liquid；
Under normal temperature condition, waste liquid is cleaned to pail pack（Abbreviation waste liquid）Middle addition（1+15）Sulfuric acid, by waste liquor PH adjust to 3 a left side
The right side adds in 30% ferrous sulfate solution and 30% hydrogen peroxide, stirs evenly, oxidation residence 3 hours；
Fe2+ + H2O2 → Fe3+ + OH-+·OH （1）
（2）Chemical precipitation method sloughs the ammonia nitrogen in waste liquid；
30% sodium hydroxide solution is added in into the waste liquid after oxidation, the pH of waste liquid is adjusted in the range of 9 ~ 11, then to useless
Magnesium chloride is added in liquid（MgCl2）And disodium hydrogen phosphate（Na2HPO4·12H2O）, mixing speed control is in 100r/min, reaction
Time is 15min；
NH3+H3O+ → NH4++H2O (2)
Mg2++ NH4++ HPO4 2- + 6H2O → MgNH4PO4·6H2O↓+ H+ (3)
Mg2++ NH4++ H2PO4 - + 6H2O → MgNH4PO4· 6H2O↓+ 2H+ (4)
Mg2++ NH4++ PO4 3- + 6H2O → MgNH4PO4·6H2O↓ (5)
（3）Total phosphorus in flocculating setting removal waste liquid；
After the waste liquid filtering after ammonia nitrogen removal, the pH of filtrate is controlled 10 or so, a certain amount of calcium chloride is added in into filtrate,
After fully being reacted with phosphate, phosphate radical, orthophosphite and divalent calcium ions in waste liquid combine, and form hydroxyapatite [Ca5OH
(PO4)3] etc. slightly solubilities salt, add in 5 ‰ polyacrylamide（PAM）Form flocculent deposit；
5 Ca2++ OH- + 3PO4 3- → Ca5OH(PO4)3↓ (6)
Ca2+ + HPO3 2- → CaHPO3↓ (7)
（4）Heavy metal in flocculating setting removal waste liquid；
After the waste liquid filtering for removing total phosphorus, 30% sodium thiosulfate is added in filtrate, the heavy metal ion of high-valence state is reduced to
Lower valency using 30% sodium hydroxide solution, the pH of waste liquid is controlled in the range of 10 ~ 12,15% vulcanized sodium is added in, stirs evenly
After add in 5% aluminium polychloride（PAC）PAM with 5 ‰, forms flocculent deposit, removes the heavy metal in waste liquid.
The processing method of the chemical pail pack cleaning solution, the waste liquid after purged and packed bucket mainly contain higher COD,
Ammonia nitrogen, total phosphorus and heavy metal ion.
The processing method of the chemical pail pack cleaning solution, when adding in magnesium chloride and disodium hydrogen phosphate, by PO4 3-And NH4+
Molar ratio control 0.9 ~ 1.1 in the range of, by Mg2+And NH4+Molar ratio control in the range of 1.2 ~ 1.4.
The realization of the present invention mainly removes most pail pack content using the solvent slop for belonging to hazardous waste, then
The high COD in the waste liquid generated after purged and packed bucket is removed using chlorine dioxide collaboration Fenton reagent oxidizing process；Then it utilizes
Chemical precipitation method sloughs the ammonia nitrogen in high density in waste liquid；Flocculation sedimentation is finally utilized by the total phosphorus and heavy metal ion in waste liquid
The process of removal.During Fenton oxidation method removal COD, in order to ensure that oxidation reaction is smoothed out that the pH of waste liquid need to be controlled
For system 3 or so, oxidation time is about 3 hours, and constantly to be stirred.During ammonia nitrogen removal, when pH is less than 9,
PO in solution4 3-Concentration is very low, is unfavorable for the double salt MgNH of indissoluble4 PO4Generation, mainly produce Mg (H2 PO4)2；When pH is big
When 11, it can generate and compare MgNH4 PO4It is less readily soluble in the Mg of water3(PO4)2；At this point, the NH in solution4+Ion becomes NH3·
H2O is less useful for the removal of ammonia nitrogen in waste water.So pH need to be controlled in the range of 9~11.Pail pack after cleaning is not only not
It can cause environmental pollution, may also pass through the further new packing bucket that is processed into and reuse, largely reduce life
Produce cost.
Claims (8)
1. a kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution, it is characterized in that：
Packaging severe toxicity is rejected first and is difficult to clean or cleans pail pack of high cost, and extracts remaining raffinate in bucket；Its
Secondary elder generation adds in the chain of different-diameter to remove and help edge in cask washing in pail pack to be cleaned, adds by selecting
The low viscosity oiliness solvent slop for belonging to hazardous waste as cleaning agent carry out first time cleaning, cleaning waste collection cycle make
With, it then adds the aqueous solution containing cleaning agent and clean for the second time, cleaning waste collection recycling, finally in right amount
Clear water cleans 2 ~ 3 times, and the pH of cleaning solution is made to drain the residual water in bucket for use close to 7；Finally using clean rag and clearly
Water by pail pack exterior washings it is clean after, can sell or use by oneself outside.
2. the COD in chlorine dioxide collaboration Fenton reagent oxidizing process removal waste liquid；
Under normal temperature condition, 1L pail packs is taken to clean waste liquid, add in appropriate 2% chlorine dioxide, oxidation residence 4 hours utilizes sulfuric acid
Solution adjusts pH to 2 ~ 4, adds in the hydrogen peroxide 60ml of 30% ferrous sulfate solution 20ml and 30%, stirs evenly, oxidation residence 3 is small
When.
3. chemical precipitation method sloughs the ammonia nitrogen in waste liquid；
It adds in sodium hydroxide solution into the waste liquid after oxidation to adjust in the range of pH to 9 ~ 11, then to adding in magnesium chloride in waste liquid
（MgCl2）And disodium hydrogen phosphate（Na2HPO4·12H2O）, mixing speed control is in 100r/min, reaction time 15min.
4. the heavy metal ion in flocculating setting removal waste liquid；
30% sodium thiosulfate 10ml is added in into the filtrate of removal total phosphorus, using sodium hydroxide solution, the pH controls of waste liquid are existed
In the range of 10 ~ 12, add in 15% vulcanized sodium 10ml, after stirring, add the remaining heavy metal of suitable contact break agent complexing from
Son adds in 5% aluminium polychloride after stirring evenly（PAC）The polyacrylamide 5ml of 60ml and 5 ‰ forms flocculent deposit.
It is useless after purged and packed bucket 5. the processing method of the chemical pail pack cleaning solution according to claims 1 or 2 or 3 or 4
Liquid mainly contains higher COD, ammonia nitrogen, total phosphorus and heavy metal ion.
6. the processing method of the chemical pail pack cleaning solution according to claims 1 or 2 or 3 or 4 or 5, is controlled to " useless "
The environmental protection concept of " useless " cleans hazardous waste pail pack using hazardous waste.
7. the processing method of the chemical pail pack cleaning solution according to claims 1 or 2 or 3 or 4 or 5 or 6, chlorine dioxide association
When removing the COD in waste liquid with Fenton reagent oxidizing process, waste liquor PH is adjusted to 3 or so.
8. the processing method of the chemical pail pack cleaning solution according to claims 1 or 2 or 3 or 4 or 5 or 6 or 7 adds in chlorine
When changing magnesium and disodium hydrogen phosphate, by PO4 3-And NH4+Molar ratio control 0.9 ~ 1.1 in the range of, by Mg2+And NH4+Molar ratio
Control is in the range of 1.2 ~ 1.4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137595.0A CN108218013A (en) | 2016-12-14 | 2016-12-14 | A kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611137595.0A CN108218013A (en) | 2016-12-14 | 2016-12-14 | A kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution |
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| Publication Number | Publication Date |
|---|---|
| CN108218013A true CN108218013A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611137595.0A Pending CN108218013A (en) | 2016-12-14 | 2016-12-14 | A kind of cleaning of hazardous waste pail pack and the processing method of cleaning solution |
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| CN (1) | CN108218013A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423012A (en) * | 2020-03-27 | 2020-07-17 | 天津绿展环保科技有限公司 | Rapid recycling method for cleaning waste liquid produced by iron drum crushing and cleaning system |
| CN112225234A (en) * | 2020-10-20 | 2021-01-15 | 东江环保股份有限公司 | Resource utilization method of high-salinity salty mud containing sodium chloride and sodium sulfate |
-
2016
- 2016-12-14 CN CN201611137595.0A patent/CN108218013A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423012A (en) * | 2020-03-27 | 2020-07-17 | 天津绿展环保科技有限公司 | Rapid recycling method for cleaning waste liquid produced by iron drum crushing and cleaning system |
| CN112225234A (en) * | 2020-10-20 | 2021-01-15 | 东江环保股份有限公司 | Resource utilization method of high-salinity salty mud containing sodium chloride and sodium sulfate |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180629 |