CN104529002A - Resourceful treatment process of urotropin production wastewater - Google Patents
Resourceful treatment process of urotropin production wastewater Download PDFInfo
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- CN104529002A CN104529002A CN201410819212.2A CN201410819212A CN104529002A CN 104529002 A CN104529002 A CN 104529002A CN 201410819212 A CN201410819212 A CN 201410819212A CN 104529002 A CN104529002 A CN 104529002A
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- Prior art keywords
- urotropine
- treatment process
- factory effluent
- wastewater
- permeate
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- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000002351 wastewater Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 235000010299 hexamethylene tetramine Nutrition 0.000 title abstract description 11
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 238000004064 recycling Methods 0.000 claims abstract description 16
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 27
- 238000001728 nano-filtration Methods 0.000 claims description 22
- 239000012466 permeate Substances 0.000 claims description 21
- 238000001223 reverse osmosis Methods 0.000 claims description 21
- 238000000108 ultra-filtration Methods 0.000 claims description 19
- 239000006228 supernatant Substances 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 7
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000004065 wastewater treatment Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 3
- 230000014759 maintenance of location Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004312 hexamethylene tetramine Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to the field of urotropin production, and particularly relates to a resourceful treatment process of urotropin production wastewater. The inventor of the invention provides a resourceful treatment process of urotropin production wastewater on the basis of researches on problems existing in the urotropin production wastewater, wherein urotropin in the urotropin production wastewater is effectively recovered through a membrane concentration process, and the retention rate for urotropin achieves more than 99%, thus realizing the resourceful recycling of urotropin, increasing the yield of urotropin, reducing resource losses, and providing benefits for enterprises.
Description
Technical field
The present invention relates to urotropine production field, particularly relate to the recycling treatment process of the factory effluent of urotropine.
Background technology
Urotropine, formal name used at school hexamethylenetetramine is a kind of important Chemicals.It can be used as the solidifying agent of phenoplast, the solidifying agent of aminoplastics, and the promotor of the vulcanization of rubber is all widely used at weaving, food-processing, medicine, agricultural, electrolytic industry, analytical chemistry etc.
Urotropine factory effluent mainly refers to the mother liquor in the production process of urotropine, wherein containing multiple pollutants such as urotropine, formaldehyde, methyl alcohol and ammonia nitrogens.
Because in urotropine factory effluent, COD index is high, at present in order to realize emission standard, enterprise must adopt the advanced oxidation means of Fenton oxidation, catalyzed oxidation and other high costs, thus adds the environmental protection treatment cost of enterprise.And due to needs oxide treatment repeatedly, wastewater treatment result is difficult to stably reaching standard, therefore cause a process difficult problem for current urotropine factory effluent.
Summary of the invention
Be difficult to process problem up to standard for current urotropine factory effluent, the present inventor has carried out more deep research and analysis to urotropine wastewater, finds that the major influence factors of its COD index is urotropine in factory effluent and formaldehyde components.Wherein the content of urotropine is 1% ~ 2.5%, is difficult to recycle, be difficult to again reasonable conversion of exhaust simultaneously during process, thus causes a large amount of urotropine to run off, and production cost increases, and factory effluent is difficult to effective process simultaneously, and stably reaching standard discharges.
Based on the research to problem existing in urotropine factory effluent, the present inventor provides a kind of recycling treatment process of urotropine factory effluent, mainly comprises the following steps:
(1) urotropine wastewater is removed suspended substance, colloidal impurity wherein through strainer;
(2) be the ultra-filtration membrane ultrafiltration of 0.01-0.02 μm by the inclusion-free urotropine wastewater via hole diameter after filtering, working pressure is 2.0-6.0Mpa;
(3) urotropine wastewater by ultra-filtration membrane is got, retain through nanofiltration and the combination of reverse osmosis membrane assembly combination membrane stack, working pressure is 2.0 ~ 6.0Mpa, nanofiltration membrane component permeate enters reverse osmosis membrane assembly, reverse osmosis membrane assembly trapped fluid is back to ultra-filtration membrane feed-water end, described nanofiltration membrane aperture is 1 ~ 2nm, and molecular weight cut-off is 50-500 dalton, and described reverse osmosis membrane aperture is 0.5-1nm;
(4) nanofiltration membrane component trapped fluid is carried out urotropine content detection, and reuse is to urotropine production plant;
(5) the urotropine factory effluent of reverse osmosis membrane assembly permeate and high temperature is carried out thermal exchange by interchanger, be warming up to 50-60 DEG C, and lime is added in permeate, regulate pH to 8 ~ 14 of permeate, then filtered liquid is heated to 70 ~ 90 DEG C, stirs and fully react for 30-60 minute.
(6) will carry out solid-liquid separation except solution after formaldehyde reaction, collect mud and formaldehydeless supernatant liquor respectively, supernatant liquor liquid gives next step wastewater treatment equipment to be further processed.
Preferably, the filtration of described step (2), (3) is all 20 ~ 50 DEG C of operations.
More preferably, step (3) is 20 ~ 30 DEG C of operations.
Meanwhile, we further preferably, in step (3), nanofiltration membrane is molecular weight cut-off is the daltonian nanofiltration membrane of 100-200.
Meanwhile, we are also preferably open further, and in described step (5), pH is 10 ~ 12.
More preferably, the middle Heat preservation of step (5) 10 ~ 30 minutes.
In order to better implement the present invention, we further disclose in step (1) described strainer is one or several in more medium filter, activated charcoal filter, accurate filter.
Beneficial effect of the present invention is:
(1) the present invention is by the urotropine in membrane concentration technique efficient recovery urotropine factory effluent, more than 99% is reached to the rejection of urotropine, achieves the resource recycling of urotropine, improve the yield of urotropine, decrease resource loss, for enterprise increases the benefit.
(2) the present invention reclaims the urotropine in waste water by membrane concentration technique, while realizing resource recycling, greatly reduces the COD in waste water, for the advanced treatment of urotropine factory effluent lightens the load.
(3) the present invention adopts the formaldehyde in lime method removal urotropine factory effluent, and formaldehyde clearance reaches more than 99%, effectively reduces the bio-toxicity of urotropine factory effluent, solves the difficult problem that urotropine factory effluent is difficult to carry out biochemical treatment.
Adopt technical scheme disclosed in this invention, the recycling of resource can be realized, when effectively reducing formaldehyde in waste water and urotropine content, comprehensively recyling urotropine, reducing the wasting of resources.And treatment process disclosed by the invention, cost is low, simple to operate, is suitable for industrialization large-scale popularization.
Embodiment
In order to understand the present invention better, below we the present invention will be further elaborated in conjunction with the embodiments.
Embodiment 1
Collect urotropine factory effluent, carry out recycling treatment process according to following steps:
(1) urotropine wastewater is filtered through more medium filter, activated charcoal filter, accurate filter the visible foreign such as suspended substance, colloidal impurity removed wherein successively;
(2) be the ultra-filtration membrane ultrafiltration of 0.01-0.02 μm by the inclusion-free urotropine wastewater via hole diameter after filtering, working pressure is 2.0-6.0Mpa, and service temperature is at 20 ~ 50 DEG C;
(3) urotropine wastewater by ultra-filtration membrane is got, retain through nanofiltration and the combination of reverse osmosis membrane assembly combination membrane stack, nanofiltration membrane aperture is 1 ~ 2nm, molecular weight cut-off is 50-500 dalton,, working pressure is 2.0 ~ 6.0Mpa, and nanofiltration membrane component permeate enters reverse osmosis membrane assembly, reverse osmosis membrane assembly trapped fluid is back to ultra-filtration membrane feed-water end, and reverse osmosis membrane aperture is 0.5-1nm;
(4) nanofiltration membrane component trapped fluid is carried out urotropine content detection, and reuse is to urotropine production plant; The recovery rejection of urotropine reaches more than 99% after testing;
(5) the urotropine factory effluent of reverse osmosis membrane assembly permeate and high temperature is carried out thermal exchange by interchanger, be warming up to 50-60 DEG C, and lime is added in permeate, regulate pH to 8 ~ 14 of permeate, then filtered liquid is heated to 70 ~ 90 DEG C, stirs and fully react for 30-60 minute.
(6) will carry out solid-liquid separation except solution after formaldehyde reaction, collect mud and formaldehydeless supernatant liquor respectively, supernatant liquor liquid gives next step wastewater treatment equipment to be further processed.
Supernatant liquor also further by Sewage advanced treatment, thus can meet pollutant emission index better.
Embodiment 2
Collect urotropine factory effluent, carry out recycling treatment process according to following steps:
The former water of certain factory's urotropine factory effluent
(1) urotropine wastewater is filtered through more medium filter, activated charcoal filter, accurate filter the visible foreign such as suspended substance, colloidal impurity removed wherein successively;
(2) be the ultra-filtration membrane ultrafiltration of 0.01 μm by the inclusion-free urotropine wastewater via hole diameter after filtering, working pressure is 4.0Mpa, and service temperature is at 20 DEG C;
(3) urotropine wastewater by ultra-filtration membrane is got, retain through nanofiltration and the combination of reverse osmosis membrane assembly combination membrane stack, nanofiltration membrane aperture is 1nm, molecular weight cut-off is 100 dalton,, working pressure is 4.0Mpa, and nanofiltration membrane component permeate enters reverse osmosis membrane assembly, reverse osmosis membrane assembly trapped fluid is back to ultra-filtration membrane feed-water end, and reverse osmosis membrane aperture is 0.5nm;
(4) nanofiltration membrane component trapped fluid is carried out urotropine content detection, and reuse is to urotropine production plant; The recovery rejection of urotropine reaches more than 99% after testing;
(5) the urotropine factory effluent of reverse osmosis membrane assembly permeate and high temperature is carried out thermal exchange by interchanger, be warming up to 50 DEG C, and add lime in permeate, regulate the pH to 12 of permeate, then filtered liquid is heated to 70 DEG C, stirs and fully react for 30 minutes.
(6) will carry out solid-liquid separation except solution after formaldehyde reaction, collect mud and formaldehydeless supernatant liquor respectively, supernatant liquor liquid gives next step wastewater treatment equipment to be further processed.
Supernatant liquor also further by Sewage advanced treatment, thus can meet pollutant emission index better.
Embodiment 3
Collect urotropine factory effluent, carry out recycling treatment process according to following steps:
(1) urotropine wastewater is filtered through more medium filter, activated charcoal filter, accurate filter the visible foreign such as suspended substance, colloidal impurity removed wherein successively;
(2) be the ultra-filtration membrane ultrafiltration of 0.02 μm by the inclusion-free urotropine wastewater via hole diameter after filtering, working pressure is 4.5Mpa, and service temperature is at 25 DEG C;
(3) urotropine wastewater by ultra-filtration membrane is got, retain through nanofiltration and the combination of reverse osmosis membrane assembly combination membrane stack, nanofiltration membrane aperture is 1nm, molecular weight cut-off is 100 dalton,, working pressure is 4.5Mpa, and nanofiltration membrane component permeate enters reverse osmosis membrane assembly, reverse osmosis membrane assembly trapped fluid is back to ultra-filtration membrane feed-water end, and reverse osmosis membrane aperture is 0.5nm;
(4) nanofiltration membrane component trapped fluid is carried out urotropine content detection, and reuse is to urotropine production plant; The recovery rejection of urotropine reaches more than 99% after testing;
(5) the urotropine factory effluent of reverse osmosis membrane assembly permeate and high temperature is carried out thermal exchange by interchanger, be warming up to 50 DEG C, and add lime in permeate, regulate pH to 8 ~ 14 of permeate, then filtered liquid is heated to 80 DEG C, stirs and fully react for 40 minutes.
(6) will carry out solid-liquid separation except solution after formaldehyde reaction, collect mud and formaldehydeless supernatant liquor respectively, supernatant liquor liquid gives next step wastewater treatment equipment to be further processed.
Supernatant liquor also further by Sewage advanced treatment, thus can meet pollutant emission index better.
Claims (6)
1. a recycling treatment process for urotropine factory effluent, is characterized in that, mainly comprises the following steps:
(1) urotropine wastewater is removed suspended substance, colloidal impurity wherein through strainer;
(2) be the ultra-filtration membrane ultrafiltration of 0.01-0.02 μm by the inclusion-free urotropine wastewater via hole diameter after filtering, working pressure is 2.0-6.0Mpa;
(3) urotropine wastewater by ultra-filtration membrane is got, be 1 ~ 2nm through aperture, molecular weight cut-off is that the daltonian nanofiltration of 50-500 and the combination of reverse osmosis membrane assembly combination membrane stack retain, and working pressure is 2.0 ~ 6.0Mpa, and urotropine wastewater is divided into trapped fluid and permeate two portions;
(4) nanofiltration membrane component trapped fluid is carried out urotropine content detection, and reuse is to urotropine production plant;
(5) permeate is warming up to 50-60 DEG C, and adds lime in permeate, regulate pH to 8 ~ 12 of permeate, stir and fully react for 30-60 minute,
(6) will carry out precipitate and separate except solution after formaldehyde reaction, collect mud and formaldehydeless supernatant liquor respectively, supernatant liquor gives next step wastewater treatment equipment to be further processed.
2. the recycling treatment process of urotropine factory effluent according to claim 1, is characterized in that, the filtration of described step (2), (3) is all 20 ~ 50 DEG C of operations.
3. the recycling treatment process of urotropine factory effluent according to claim 2, is characterized in that, described step (3) is 20 ~ 30 DEG C of operations.
4. the recycling treatment process of urotropine factory effluent as claimed in any of claims 1 to 3, is characterized in that, in described step (3), nanofiltration membrane is molecular weight cut-off is the daltonian nanofiltration membrane of 100-200;
In described step (5), pH is 10 ~ 12;
Heat preservation 10 ~ 30 minutes in step (5).
5. the recycling treatment process of urotropine factory effluent according to claim 1, is characterized in that, the strainer described in step (1) is one or several in more medium filter, activated charcoal filter, accurate filter.
6. the recycling treatment process of urotropine factory effluent according to claim 1, is characterized in that, in described step (5), the urotropine factory effluent of permeate and high temperature carries out thermal exchange by interchanger, is warming up to 50 ~ 60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819212.2A CN104529002B (en) | 2014-12-25 | 2014-12-25 | Hexamethylenamine produces the recycling treatment process of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410819212.2A CN104529002B (en) | 2014-12-25 | 2014-12-25 | Hexamethylenamine produces the recycling treatment process of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104529002A true CN104529002A (en) | 2015-04-22 |
| CN104529002B CN104529002B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410819212.2A Active CN104529002B (en) | 2014-12-25 | 2014-12-25 | Hexamethylenamine produces the recycling treatment process of waste water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943321A (en) * | 2020-07-22 | 2020-11-17 | 湖北兴发环保科技有限公司 | Method for recycling glycine production wastewater resources |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507951A (en) * | 1994-02-23 | 1996-04-16 | Wright Chemical Corporation | Method for treating hexamine waste water |
| CN102491562A (en) * | 2011-12-20 | 2012-06-13 | 重庆锐致环保科技有限公司 | High-ammonia-nitrogen waste water resource recovery technology |
-
2014
- 2014-12-25 CN CN201410819212.2A patent/CN104529002B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5507951A (en) * | 1994-02-23 | 1996-04-16 | Wright Chemical Corporation | Method for treating hexamine waste water |
| CN102491562A (en) * | 2011-12-20 | 2012-06-13 | 重庆锐致环保科技有限公司 | High-ammonia-nitrogen waste water resource recovery technology |
Non-Patent Citations (2)
| Title |
|---|
| 蔡邦肖等: "反渗透法浓缩分离乌洛托品废水", 《水处理技术》 * |
| 陈贻松: "乌洛托品生成过程中产生的含氨污水处理研究", 《浙江化工》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111943321A (en) * | 2020-07-22 | 2020-11-17 | 湖北兴发环保科技有限公司 | Method for recycling glycine production wastewater resources |
| CN111943321B (en) * | 2020-07-22 | 2022-04-22 | 湖北兴发环保科技有限公司 | Method for recycling glycine production wastewater resources |
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| Publication number | Publication date |
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| CN104529002B (en) | 2016-07-06 |
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