CN113336485A - Pretreatment technology of acidic organic waste - Google Patents
Pretreatment technology of acidic organic waste Download PDFInfo
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- CN113336485A CN113336485A CN202110606942.4A CN202110606942A CN113336485A CN 113336485 A CN113336485 A CN 113336485A CN 202110606942 A CN202110606942 A CN 202110606942A CN 113336485 A CN113336485 A CN 113336485A
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- waste
- acidic organic
- organic waste
- solution
- acidic
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- 239000010815 organic waste Substances 0.000 title claims abstract description 36
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 34
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000004064 recycling Methods 0.000 claims abstract description 16
- 239000013049 sediment Substances 0.000 claims abstract description 16
- 239000002910 solid waste Substances 0.000 claims abstract description 15
- 239000000243 solution Substances 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000004568 cement Substances 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 239000003929 acidic solution Substances 0.000 claims abstract description 8
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008098 formaldehyde solution Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 18
- 235000012255 calcium oxide Nutrition 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 238000006386 neutralization reaction Methods 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003892 spreading Methods 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000010808 liquid waste Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000012643 polycondensation polymerization Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000036561 sun exposure Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0481—Other specific industrial waste materials not provided for elsewhere in C04B18/00
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00784—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes for disposal only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a pretreatment technology of acidic organic waste, which comprises the following steps: p1, adding the acidic organic waste into the recovered water, and adjusting the water content to be 60-70% to form an acidic solution; p2, placing the acidic solution in a closed container, and heating to 50-60 ℃ to obtain a heated solution; p3, adding a formaldehyde solution into the heating solution, heating to 90-95 ℃, and continuously stirring for polycondensation reaction to generate a sediment and a reaction waste liquid; p4, naturally cooling the reacted solution to room temperature, and then filtering and taking out sediments to obtain reaction waste liquid; p5, washing the sediment with clear water to obtain usable and washing water, and recycling; p6, obtaining neutralized waste; p7, obtaining solid waste; p8, mix solid waste and cement, can accomplish the processing, can effectively improve treatment quality, guarantee the recovery effect, avoid extravagant and secondary pollution, do benefit to and use widely.
Description
Technical Field
The invention relates to the technical field of organic waste treatment, in particular to a pretreatment technology of acidic organic waste.
Background
In the current industrial production, a large amount of organic waste is generated, and acidic organic waste is formed by mixing acidic substances, wherein phenol waste is a common one and needs to be treated.
However, in the conventional acidic organic waste treatment, alkaline substances are mostly directly added for neutralization and then discharged, so that only acidic substances in the waste can be treated, organic substances still remain in the acidic organic waste treatment, the solution causes secondary pollution, the safety is poor, and the acidic organic waste treatment is more wasteful due to direct discharge and discarding, so that a new treatment technology needs to be provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a pretreatment technology for acidic organic waste.
In order to achieve the purpose, the invention adopts the following technical scheme:
a pretreatment technology of acidic organic waste, which comprises the following steps:
p1, adding the acidic organic waste into the recovered water, and adjusting the water content to be 60-70% to form an acidic solution;
p2, placing the acidic solution in a closed container, and heating to 50-60 ℃ to obtain a heated solution;
p3, adding a formaldehyde solution into the heating solution, heating to 90-95 ℃, and continuously stirring for polycondensation reaction to generate a sediment and a reaction waste liquid;
p4, naturally cooling the reacted solution to room temperature, and then filtering and taking out sediments to obtain reaction waste liquid;
p5, washing the sediment with clear water to obtain usable and washing water, and recycling;
p6, adding the reaction waste liquid into a stirrer, electrolyzing, electrolytically oxidizing residual organic matters, adding excessive quicklime, and performing a neutralization reaction to obtain neutralized waste;
p7, taking out the neutralized waste, spreading, solarizing, and removing water to obtain solid waste;
and P8, mixing the solid waste with cement, solidifying, and recycling the building to finish the treatment.
Preferably, the acidic organic waste of the P1 step includes solid waste and liquid waste that also includes phenol.
Preferably, the closed container of the step P2 comprises a smoke exhaust pipe and is connected to a quicklime filter, and the neutralization reaction is carried out to absorb the evaporated waste gas.
Preferably, the formaldehyde solution is added at intervals in the step P3, wherein each addition is carried out at intervals of 120 ml to 15 ml, and the interval time is 15 seconds to 20 seconds until no new deposit is generated.
Preferably, the filtration mode of the step P4 is to perform standing layering firstly, then remove the upper layer wastewater, obtain bottom sediment and perform filtration separation through a ceramic filter.
Preferably, the washing water in the step P5 is recycled by adding the washing water in the step P1 for secondary recycling.
Preferably, the ratio of the excess amount of quicklime to the reaction waste liquid in the step P6 is 1.5-1.8:1, and the stirring is carried out sufficiently for 30 minutes to 45 minutes.
Preferably, the exposure mode of the P7 step is stacking and spreading on a cement ground, and carrying out sun exposure for 3 to 5 days.
Preferably, the solid waste and the cement in the P8 step are mixed in a ratio of 1:5-8, and are crushed after being mixed and solidified for recycling.
According to the pretreatment technology for acidic organic waste, provided by the invention, the organic waste is diluted and then added with the condensing agent, and then subjected to condensation polymerization to generate a deposit, so that the organic waste is efficiently removed and recycled, the acidic environment of the waste can be directly utilized for reaction without adding a catalyst again, the cost is saved, then the waste liquid is electrolyzed to ensure the thoroughness of organic matter treatment, then neutralization reaction and solidification recycling are carried out, the waste is avoided, the treatment quality can be effectively improved, the recycling effect is ensured, the waste and secondary pollution are avoided, and the pretreatment technology is beneficial to popularization and use.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A pretreatment technology of acidic organic waste, which comprises the following steps:
p1, adding the acidic organic waste into the recovered water, and adjusting the water content to be 60-70% to form an acidic solution;
p2, placing the acidic solution in a closed container, and heating to 50-60 ℃ to obtain a heated solution;
p3, adding a formaldehyde solution into the heating solution, heating to 90-95 ℃, and continuously stirring for polycondensation reaction to generate a sediment and a reaction waste liquid;
p4, naturally cooling the reacted solution to room temperature, and then filtering and taking out sediments to obtain reaction waste liquid;
p5, washing the sediment with clear water to obtain usable and washing water, and recycling;
p6, adding the reaction waste liquid into a stirrer, electrolyzing, electrolytically oxidizing residual organic matters, adding excessive quicklime, and performing a neutralization reaction to obtain neutralized waste;
p7, taking out the neutralized waste, spreading, solarizing, and removing water to obtain solid waste;
and P8, mixing the solid waste with cement, solidifying, and recycling the building to finish the treatment.
Preferably, the acidic organic waste of the P1 step includes solid waste and liquid waste that also includes phenol.
Preferably, the closed container in the step P2 comprises a smoke exhaust pipe and is connected to a quicklime filter, and the neutralization reaction is carried out to absorb the evaporated waste gas.
Preferably, the formaldehyde solution is added at intervals in the step P3, and each addition is carried out at intervals of 120 ml to 15 ml, and the interval time is 15 seconds to 20 seconds until no new deposit is generated.
Preferably, the filtration mode of the step P4 is to perform standing layering firstly, then remove the upper layer wastewater, obtain bottom sediment and perform filtration separation through a ceramic filter.
Preferably, the washing water in the step P5 is recycled by adding the washing water in the step P1 for secondary recycling.
Preferably, the ratio of the excess amount of quicklime to the reaction waste liquid in the step P6 is 1.5-1.8:1, and the stirring is carried out sufficiently for 30 minutes to 45 minutes.
Preferably, the P7 step is performed by piling and spreading on a cement ground, and exposing to sunlight for 3 to 5 days.
Preferably, the solid waste and the cement in the P8 step are mixed in a ratio of 1:5-8, and are crushed after being mixed and solidified for recycling.
According to the pretreatment technology for acidic organic waste, provided by the invention, the organic waste is diluted and then added with the condensing agent, and then subjected to condensation polymerization to generate a deposit, so that the organic waste is efficiently removed and recycled, the acidic environment of the waste can be directly utilized for reaction without adding a catalyst again, the cost is saved, then the waste liquid is electrolyzed to ensure the thoroughness of organic matter treatment, then neutralization reaction and solidification recycling are carried out, the waste is avoided, the treatment quality can be effectively improved, the recycling effect is ensured, the waste and secondary pollution are avoided, and the pretreatment technology is beneficial to popularization and use.
Claims (9)
1. A pretreatment technology of acidic organic waste is characterized in that: the pretreatment technology of the acidic organic waste comprises the following steps:
p1, adding the acidic organic waste into the recovered water, and adjusting the water content to be 60-70% to form an acidic solution;
p2, placing the acidic solution in a closed container, and heating to 50-60 ℃ to obtain a heated solution;
p3, adding a formaldehyde solution into the heating solution, heating to 90-95 ℃, and continuously stirring for polycondensation reaction to generate a sediment and a reaction waste liquid;
p4, naturally cooling the reacted solution to room temperature, and then filtering and taking out sediments to obtain reaction waste liquid;
p5, washing the sediment with clear water to obtain usable and washing water, and recycling;
p6, adding the reaction waste liquid into a stirrer, electrolyzing, electrolytically oxidizing residual organic matters, adding excessive quicklime, and performing a neutralization reaction to obtain neutralized waste;
p7, taking out the neutralized waste, spreading, solarizing, and removing water to obtain solid waste;
and P8, mixing the solid waste with cement, solidifying, and recycling the building to finish the treatment.
2. The pretreatment technique for acidic organic waste according to claim 1, wherein: the acidic organic waste of the P1 step includes solid waste and liquid waste that also includes phenol.
3. The pretreatment technique for acidic organic waste according to claim 1, wherein: the closed container of the step P2 comprises a smoke exhaust pipe and is connected to a quicklime filter to perform neutralization reaction to absorb evaporated waste gas.
4. The pretreatment technique for acidic organic waste according to claim 1, wherein: the formaldehyde solution is added at intervals in the P3 step, wherein each addition is carried out at intervals of 120 ml to 15 ml, and the interval time is 15 seconds to 20 seconds until no new sediment is generated.
5. The pretreatment technique for acidic organic waste according to claim 1, wherein: and the filtration mode of the step P4 is to firstly carry out standing and layering, then remove the upper layer wastewater, and filter and separate the bottom sediment through a ceramic filter.
6. The pretreatment technique for acidic organic waste according to claim 1, wherein: the washing water in the step P5 is recycled by adding the washing water into the recovered water in the step P1 for secondary recycling.
7. The pretreatment technique for acidic organic waste according to claim 1, wherein: and the ratio of the excessive quicklime to the reaction waste liquid in the step P6 is 1.5-1.8:1, and the mixture is fully stirred for 30-45 minutes.
8. The pretreatment technique for acidic organic waste according to claim 1, wherein: the solarization mode of the step P7 is to pile and spread on the cement ground, and solarize for 3 to 5 days.
9. The pretreatment technique for acidic organic waste according to claim 1, wherein: the mixing ratio of the solid waste and the cement in the step P8 is 1:5-8, and the solid waste and the cement are crushed, recovered and reprocessed after being mixed and solidified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606942.4A CN113336485A (en) | 2021-05-27 | 2021-05-27 | Pretreatment technology of acidic organic waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110606942.4A CN113336485A (en) | 2021-05-27 | 2021-05-27 | Pretreatment technology of acidic organic waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113336485A true CN113336485A (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110606942.4A Pending CN113336485A (en) | 2021-05-27 | 2021-05-27 | Pretreatment technology of acidic organic waste |
Country Status (1)
| Country | Link |
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| CN (1) | CN113336485A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824577A (en) * | 1987-08-17 | 1989-04-25 | Klaus Schwitzgelbel | Phenol, melamine, formaldehyde removal process |
| CN104787955A (en) * | 2015-04-17 | 2015-07-22 | 青岛科技大学 | Method for removing organic matters in phenolic wastewater |
| CN108558146A (en) * | 2018-06-13 | 2018-09-21 | 江苏湖大化工科技有限公司 | Process and device associated with organic matter advanced oxidation and electrolytic catalysis in a kind of high-salt wastewater |
-
2021
- 2021-05-27 CN CN202110606942.4A patent/CN113336485A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4824577A (en) * | 1987-08-17 | 1989-04-25 | Klaus Schwitzgelbel | Phenol, melamine, formaldehyde removal process |
| CN104787955A (en) * | 2015-04-17 | 2015-07-22 | 青岛科技大学 | Method for removing organic matters in phenolic wastewater |
| CN108558146A (en) * | 2018-06-13 | 2018-09-21 | 江苏湖大化工科技有限公司 | Process and device associated with organic matter advanced oxidation and electrolytic catalysis in a kind of high-salt wastewater |
Non-Patent Citations (1)
| Title |
|---|
| 张招贤等编著: "《涂层钛电极》", 31 May 2014, 冶金工业出版社 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210903 |
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| RJ01 | Rejection of invention patent application after publication |