CN102167431B - Method for preparing cation type composite flocculant for treating waste drilling fluid - Google Patents
Method for preparing cation type composite flocculant for treating waste drilling fluid Download PDFInfo
- Publication number
- CN102167431B CN102167431B CN 201110060601 CN201110060601A CN102167431B CN 102167431 B CN102167431 B CN 102167431B CN 201110060601 CN201110060601 CN 201110060601 CN 201110060601 A CN201110060601 A CN 201110060601A CN 102167431 B CN102167431 B CN 102167431B
- Authority
- CN
- China
- Prior art keywords
- solution
- gelatin
- preparation
- flocculating agent
- waste drilling
- 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.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 35
- 239000002131 composite material Substances 0.000 title claims abstract description 32
- 239000002699 waste material Substances 0.000 title claims abstract description 20
- 239000012530 fluid Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title abstract description 14
- 150000001768 cations Chemical class 0.000 title abstract 2
- 108010010803 Gelatin Proteins 0.000 claims abstract description 52
- 229920000159 gelatin Polymers 0.000 claims abstract description 52
- 239000008273 gelatin Substances 0.000 claims abstract description 52
- 235000019322 gelatine Nutrition 0.000 claims abstract description 52
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 52
- 238000002360 preparation method Methods 0.000 claims abstract description 31
- 102000008186 Collagen Human genes 0.000 claims abstract description 19
- 108010035532 Collagen Proteins 0.000 claims abstract description 19
- 229920001436 collagen Polymers 0.000 claims abstract description 19
- 230000003301 hydrolyzing effect Effects 0.000 claims abstract description 8
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 7
- 125000002091 cationic group Chemical group 0.000 claims description 26
- 239000008394 flocculating agent Substances 0.000 claims description 25
- 239000000413 hydrolysate Substances 0.000 claims description 18
- 230000007062 hydrolysis Effects 0.000 claims description 18
- 238000006460 hydrolysis reaction Methods 0.000 claims description 18
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 13
- 239000000284 extract Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 229940037003 alum Drugs 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 101000693530 Staphylococcus aureus Staphylokinase Proteins 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 abstract description 22
- 238000005189 flocculation Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 12
- 229910021645 metal ion Inorganic materials 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 abstract 1
- 125000000129 anionic group Chemical group 0.000 abstract 1
- 238000011109 contamination Methods 0.000 abstract 1
- 230000003311 flocculating effect Effects 0.000 abstract 1
- 231100000956 nontoxicity Toxicity 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229920000620 organic polymer Polymers 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 206010029350 Neurotoxicity Diseases 0.000 description 2
- 206010044221 Toxic encephalopathy Diseases 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 230000007135 neurotoxicity Effects 0.000 description 2
- 231100000228 neurotoxicity Toxicity 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 102000004142 Trypsin Human genes 0.000 description 1
- 108090000631 Trypsin Proteins 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003226 decolorizating effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 231100000957 no side effect Toxicity 0.000 description 1
- 239000007764 o/w emulsion Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012588 trypsin Substances 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a composite flocculant for treating waste drilling fluid generated in the petroleum drilling process, and a preparation method thereof. The preparation method comprises the following steps of: extracting gelatin with larger relative molecular mass from waste skin collagen through alkaline hydrolysis; further hydrolyzing the extracted gelatin into collagen with moderate relative molecular mass by using different hydrolytic reagents; and loading proper metal ions on the collagen by using a tanning mechanism in tanning chemistry to obtain a cation type composite flocculant, and performing flocculation on anionic waste drilling fluid. The composite flocculant prepared by the method has the advantages of low cost, simple operation, high flocculating efficiency, safety and nontoxicity for a human body and the like, and is an environment-friendly product. Meanwhile, the waste skin collagen is reutilized, waste is used to treat contamination, and secondary pollution on the environment is avoided.
Description
Technical field
The present invention relates to the waste drilling fluids disposal technical field, be specifically related to a kind ofly take discarded collagen as matrix, be used for the preparation method of the cationic composite flocculating agent of waste drilling fluids disposal.
Background technology
Rejected well drilling liquid and sump oil, sewage are the same, are one of large public hazards of three in the oil-gas field production process.It is hard degradation under state of nature, is deposited in around the working district, takies a large amount of arable lands or meadow, causes soil compaction, saline Land, makes to be occupied the soil and lose use value.Simultaneously, the rejected well drilling liquid long-term accumulated is penetrated under the earth's surface water layer or with the excessive inflow rivers of rainwater brook, polluted source, and harm humans is healthy.Along with country to the improving constantly of environmental requirement, the comprehensive regulation of rejected well drilling liquid has been become current problem demanding prompt solution.
Rejected well drilling liquid has the bulk properties of colloid and suspensoid take clay and water as the basis, is a kind of more stable dispersion system.Because suspended particulates multi-band negative electricity wherein under the effect of electrostatic double layer, can make sewage have certain stability, thereby so that solidification effect is undesirable, leach liquor water quality is not up to standard.And when solidification treatment, suitably add flocculation agent, and both can abolish oil in water emulsion wherein, also can make elimination of colloid stability simultaneously, significantly improve the water quality of leach liquor, avoid contaminate environment.
Common flocculation agent mainly is divided into inorganic polymer type and organic polymer type.Wherein the inorganic polymer flocculant poor stability take poly-silicic acid as representative operates comparatively complexity during preparation, is not widely used; And present domestic widely used organic polymer coargulator---polyacrylamide (PAM), synthetic cost is high, and its polymerization single polymerization monomer acrylamide is difficult to degraded, has strong neurotoxicity and carinogenicity, threatens human health, causes secondary environmental pollution.
Summary of the invention:
The object of the present invention is to provide a kind of preparation method of cationic composite flocculating agent, have strong neurotoxicity and carinogenicity to solve higher, the synthetic or degraded product of the existing existing cost of flocculation agent, can cause the problem of secondary environmental pollution.
To achieve these goals, the technical solution used in the present invention is:
A kind of preparation method of the cationic composite flocculating agent for waste drilling fluids disposal comprises the steps:
1) preparation of gelatin hydrolysate: the gelatin that extracts in the discarded collagen is prepared into the gelatin solution of massfraction 8% ~ 12%, then to wherein adding dissimilar hydrolytic reagents as raw material, hydrolysis temperature is 35 ~ 70 ℃, hydrolysis time is 2 ~ 6h, obtains gelatin hydrolysate solution, and is for subsequent use;
2) gained gelatin hydrolysate solution 20mL the preparation of cationic composite flocculating agent: get 1), regulate pH value to 3, to the inorganic metal salts solution 35 ~ 140mL that wherein adds massfraction 5%, after mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is adjusted to 3.5 ~ 4.3, in 30 ~ 55 ℃ of lower reaction 10 ~ 16h, namely get cationic composite flocculating agent.
The said hydrolyzed agent is that massfraction is 10% H
2SO
4Solution, gelatin solution and H
2SO
4Solution by volume 2.5:1 mixes.
The said hydrolyzed agent is that massfraction is 10% citric acid solution, and gelatin solution and citric acid solution by volume 4:1 mix.
The said hydrolyzed agent is 1398 neutral proteinase, and its add-on is 0.5 ~ 1.5% of used gelatin quality.
The said hydrolyzed agent is trypsinase, and its add-on is 1.5% of used gelatin quality.
Above-mentioned steps 2) the inorganic metal salts solution in is a kind of in ferrum sulfuricum oxydatum solutum, ferric chloride Solution and the alum liquor.
Compared with prior art, the present invention has the following advantages:
1, raw material sources are wide, and cost is low.China is tanning industry big country, but in the process hides process, the leather of Substance Transformation for selling that raw material tare weight about 20% is only arranged, and in the composition of discarded collagen, about 80% all is available gelatin, thereby the raw material sources that use among the present invention are extensive, and with low cost, preparation process condition is gentle, processing ease.
2, the product flocculation performance is high.Rejected well drilling liquid presents the negative valency attitude because its organic content is higher, cationic flocculant can play charge neutrality and adsorption bridging effect with particulate in the water, thereby make the particulate in the system take off surely, flocculate, effectively reduce the massfraction of suspended solids in the water, reduce the COD content of water quality.Behind the gelatin hydrolysis, contain a large amount of carboxyls, hydroxyl isoreactivity group on the collagen molecules, can loaded metal ion, and carrying capacity is strong, charge capacity is large, selectivity is high.Simultaneously, for organic polymer coargulator, on its molecule with-NH-,-COO-,-OH-etc. has the hydrophilic radical of various structures, is conducive to pollutent and enters flocs unit, decolourising property is good.
3, product is environmentally friendly, realizes " with useless pollution treatment ", economizes on resources to greatest extent.The gelatin that the present invention extracts in the discarded collagen and inorganic metal salt are as raw material, and the preparation cationic composite flocculating agent is used for the flocculation of oil-gas field rejected well drilling liquid, and raw material and product all have no side effect.Implement the theory of " with useless pollution treatment ", the discarded collagen that the process hides process produces is recycled, when economizing on resources, prevent from environment is caused secondary pollution.
Embodiment:
Below in conjunction with embodiment the present invention is done and to explain.
In the composition of discarded collagen, have approximately 80% all to be available gelatin.Gelatin is a kind of amphiprotic substance, can expose a large amount of carboxyls, hydroxyl isoreactivity group after hydrolysis, and this class natural macromolecular material has the incomparable special chemical structure of many synthesized polymer materials and supramolecular structure.Utilize it can prepare the novel flocculation material that is suitable for different separate object, this class flocculation material is expected at the fields such as waste drilling fluids disposal, chemical industry, metallurgy, environmental protection and food-processing generation material impact.
The discarded shavings of the present invention in the process hides process extracted gelatin as raw material, under proper condition after the hydrolysis, expose a large amount of carboxyls, hydroxyl isoreactivity group on the collagen molecules, utilize the tanning mechanism in the tanning chemistry, suitable metal ion is loaded on the collagen molecules of gained behind the gelatin hydrolysis, prepare cationic composite flocculating agent, and use it for the flocculation of oil-gas field rejected well drilling liquid.
Embodiment 1:
A kind of preparation method of the positively charged ion composite flocculation agent for the oil-gas field waste drilling fluids disposal comprises the steps:
1) the larger gelatin of the relative molecular mass that extracts from discarded collagen take alkaline process (MgO) hydrolysis is as raw material, massfraction is all 10% gelatin solution and H
2SO
4Solution by volume 2.5:1 mixes, and in 60 ℃ of lower hydrolysis 4h, obtains gelatin hydrolysate solution.
2) get 1) middle gelatin hydrolysate solution 20mL, regulating its pH is 3, adds the alum liquor 140mL of massfraction 5%, after fully mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is carried to 4.3, in 40 ℃ of lower reaction 16h, namely get cationic composite flocculating agent.
With the prepared flocculation agent of present embodiment the oil-gas field rejected well drilling liquid is flocculated, flocculation agent is 1 ︰ 3.5 with the ratio of rejected well drilling liquid dosage during use, and the COD clearance reaches 80.8%, and removal efficiency reaches 78.2%.
Embodiment 2:
A kind of preparation method of the positively charged ion composite flocculation agent for the oil-gas field waste drilling fluids disposal comprises the steps:
1) the larger gelatin of the relative molecular mass that extracts from discarded collagen take alkaline process (MgO) hydrolysis is as raw material, the preparation massfraction is 12% gelatin solution, to the 1398 neutral proteinase (by the quality of used gelatin) that wherein adds 1.5%, in 45 ℃ of lower hydrolysis 3h, obtain gelatin hydrolysate solution.
2) get 1) middle gelatin hydrolysate solution 20mL, regulate its pH=3, add the alum liquor 70mL of massfraction 5%, after fully mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is carried to 3.8, in 30 ℃ of lower reaction 12h, namely get cationic composite flocculating agent.
With the prepared flocculation agent of present embodiment the oil-gas field rejected well drilling liquid is flocculated, flocculation agent is 1 ︰ 3.5 with the ratio of rejected well drilling liquid dosage during use, and the COD clearance reaches 83.9%, and removal efficiency reaches 86.6%.
Embodiment 3:
A kind of preparation method of the positively charged ion composite flocculation agent for the oil-gas field waste drilling fluids disposal comprises the steps:
1) the larger gelatin of the relative molecular mass that extracts from discarded collagen take alkaline process (MgO) hydrolysis is as raw material, the preparation massfraction is 10% gelatin solution, to wherein adding 1.5% the trypsin quality by used gelatin), in 35 ℃ of lower hydrolysis 3h, obtain gelatin hydrolysate solution.
2) get 1) middle gelatin hydrolysate solution 20mL, regulating its pH is 3, adds the alum liquor 100mL of massfraction 5%, after fully mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is carried to 4.0, in 50 ℃ of lower reaction 10h, namely get cationic composite flocculating agent.
With the prepared flocculation agent of present embodiment the oil-gas field rejected well drilling liquid is flocculated, flocculation agent is 1 ︰ 3.5 with the ratio of rejected well drilling liquid dosage during use, and the COD clearance reaches 91.1%, and removal efficiency reaches 88.2%.
Embodiment 4:
A kind of preparation method of cationic composite flocculating agent comprises the steps:
1) preparation of gelatin hydrolysate: the larger gelatin of the relative molecular mass that extracts from discarded collagen take alkaline process (MgO) hydrolysis is as raw material, with the citric acid solution of the gelatin solution of massfraction 12% and massfraction 10% by volume 4:1 mix, in 70 ℃ of lower hydrolysis 6h, obtain gelatin hydrolysate solution.
2) gelatin hydrolysate solution 20mL the preparation of cationic composite flocculating agent: get 1), regulating its pH is 3, the ferrum sulfuricum oxydatum solutum 45mL that adds massfraction 5%, after fully mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is carried to 3.5, in 55 ℃ of lower reaction 14h, namely get cationic composite flocculating agent.
With the prepared flocculation agent of present embodiment the oil-gas field rejected well drilling liquid is flocculated, flocculation agent is 1 ︰ 3.5 with the ratio of rejected well drilling liquid dosage during use, and the COD clearance reaches 83.9%, and removal efficiency reaches 85.1%.
Embodiment 5:
A kind of preparation method of cationic composite flocculating agent comprises the steps:
1) preparation of gelatin hydrolysate: the larger gelatin of the relative molecular mass that extracts from discarded collagen take alkaline process (MgO) hydrolysis is as raw material, the preparation massfraction is 8% gelatin solution, to the 1398 neutral proteinase (by the quality of used gelatin) that wherein adds 0.5%, in 40 ℃ of lower hydrolysis 2h, obtain gelatin hydrolysate solution.
2) gelatin hydrolysate solution 20mL the preparation of cationic composite flocculating agent: get 1), regulate its pH=3, the ferric chloride Solution 35mL that adds massfraction 5%, after fully mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is carried to 3.8, in 50 ℃ of lower reaction 12h, namely get cationic composite flocculating agent.
With the prepared flocculation agent of present embodiment the oil-gas field rejected well drilling liquid is flocculated, flocculation agent is 1 ︰ 3.5 with the ratio of rejected well drilling liquid dosage during use, and the COD clearance reaches 77.8%, and removal efficiency reaches 73.6%.
Claims (6)
1. a preparation method who is used for the cationic composite flocculating agent of waste drilling fluids disposal is characterized in that: comprise the steps:
1) preparation of gelatin hydrolysate: the gelatin that extracts in the discarded collagen is prepared into the gelatin solution of massfraction 8% ~ 12%, then to wherein adding a kind of hydrolytic reagent as raw material, hydrolysis temperature is 35 ~ 70 ℃, hydrolysis time is 2 ~ 6h, obtains gelatin hydrolysate solution, and is for subsequent use;
2) gained gelatin hydrolysate solution 20mL the preparation of cationic composite flocculating agent: get 1), regulate pH value to 3, to the inorganic metal salts solution 35 ~ 140mL that wherein adds massfraction 5%, after mixing under the normal temperature, under the condition of vibration, add alkali the pH value of solution is adjusted to 3.5 ~ 4.3, in 30 ~ 55 ℃ of lower reaction 10 ~ 16h, namely get cationic composite flocculating agent.
2. the preparation method of a kind of cationic composite flocculating agent for waste drilling fluids disposal according to claim 1, it is characterized in that: described hydrolytic reagent is that massfraction is 10% H
2SO
4Solution, gelatin solution and H
2SO
4Solution by volume 2.5:1 mixes.
3. the preparation method of a kind of cationic composite flocculating agent for waste drilling fluids disposal according to claim 1, it is characterized in that: described hydrolytic reagent is that massfraction is 10% citric acid solution, and gelatin solution and citric acid solution by volume 4:1 mix.
4. the preparation method of a kind of cationic composite flocculating agent for waste drilling fluids disposal according to claim 1, it is characterized in that: described hydrolytic reagent is 1398 neutral proteinase, its add-on is 0.5 ~ 1.5% of used gelatin quality.
5. the preparation method of a kind of cationic composite flocculating agent for waste drilling fluids disposal according to claim 1, it is characterized in that: described hydrolytic reagent is trypsinase, its add-on is 1.5% of used gelatin quality.
6. the preparation method of the described a kind of cationic composite flocculating agent for waste drilling fluids disposal of any one according to claim 1-5 is characterized in that: the inorganic metal salts solution described step 2) is a kind of in ferrum sulfuricum oxydatum solutum, ferric chloride Solution and the alum liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060601 CN102167431B (en) | 2011-03-14 | 2011-03-14 | Method for preparing cation type composite flocculant for treating waste drilling fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060601 CN102167431B (en) | 2011-03-14 | 2011-03-14 | Method for preparing cation type composite flocculant for treating waste drilling fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102167431A CN102167431A (en) | 2011-08-31 |
| CN102167431B true CN102167431B (en) | 2013-01-30 |
Family
ID=44488786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110060601 Expired - Fee Related CN102167431B (en) | 2011-03-14 | 2011-03-14 | Method for preparing cation type composite flocculant for treating waste drilling fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102167431B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328979B (en) * | 2011-09-06 | 2012-12-19 | 陕西科技大学 | Cationic flocculant based on collagen modification and preparation method thereof |
| CN102391844B (en) * | 2011-10-16 | 2013-06-12 | 天津科技大学 | Chrome leather shavings well-drilling leakage-stopping material |
| CN103183405A (en) * | 2013-04-19 | 2013-07-03 | 四川大学 | Collagen-inorganic metal salt flocculating agent and preparation method thereof |
| CN104341035B (en) * | 2014-08-30 | 2016-05-04 | 齐鲁工业大学 | Collagen-modified cationic flocculant of a kind of magnetic and preparation method thereof |
| CN104229966B (en) * | 2014-08-30 | 2016-04-06 | 齐鲁工业大学 | A kind of magnetic collagen aleurone modified cation flocculation agent and preparation method thereof |
| CN105502616A (en) * | 2015-12-21 | 2016-04-20 | 陕西科技大学 | Anion flocculating agent and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69317259T2 (en) * | 1993-04-05 | 1998-10-01 | Agfa Gevaert Nv | Process for the purification of waste water containing silver |
| JPH1110169A (en) * | 1997-06-18 | 1999-01-19 | Hymo Corp | Treatment process for waste water |
| CN101717144B (en) * | 2009-11-19 | 2012-08-22 | 四川农业大学 | PSAF- CTS composite flocculant and preparation method thereof |
-
2011
- 2011-03-14 CN CN 201110060601 patent/CN102167431B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102167431A (en) | 2011-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102167431B (en) | Method for preparing cation type composite flocculant for treating waste drilling fluid | |
| CN102328979B (en) | Cationic flocculant based on collagen modification and preparation method thereof | |
| WO2016058437A1 (en) | Treatment method for deep dewatering of sludge | |
| CN107188330A (en) | A kind of method of adsorption cleaning acid waste water | |
| CN104724809B (en) | A kind of ternary polymerization flocculant based on natural polymer and preparation method thereof | |
| CN105645732B (en) | A kind of combined chemical hardening and tempering method of dewatered sludge depth desiccation | |
| CN103145313B (en) | Sludge conditioning agent appropriate for sludge incineration handling and conditioning method | |
| CN105540797A (en) | Efficient water-treatment composite flocculant | |
| CN104761029A (en) | Composite inorganic high-molecular waste water treatment flocculant | |
| CN102718295B (en) | Compound medicament for treating coking wastewater and preparation method thereof | |
| CN111233304B (en) | Wall breaking agent for sludge, hydrophobic skeleton, preparation method and sludge reduction method | |
| CN102976458A (en) | Compound refined diatomite sewage dephosphorization agent | |
| CN104150741A (en) | Sludge chemical conditioning method and conditioner | |
| CN102531237B (en) | Method for treating money-printing wastewater with combination of modified bentonite and photo-Fenton method | |
| CN100532287C (en) | Natural compound flocculant of chitosan, producing method and uses of the same | |
| CN102408145B (en) | Composite flocculant and use thereof | |
| CN110590121A (en) | Sludge dehydrating agent and sludge dehydrating method | |
| CN103172160A (en) | Composite powdery blue algae treatment agent and preparation method thereof | |
| CN103588273B (en) | A kind of Collagen Hydrolysate-inorganic metal salt flocculation agent and preparation method thereof | |
| CN103626367B (en) | A kind of method of floating the recycling of oil sludge resource utilization containing gather qi together | |
| CN102897884A (en) | Composite flocculant as well as preparation method and application thereof on processing printing and dyeing wastewater | |
| CN102219290B (en) | Complex coagulant for advanced treatment of biochemical tail water, and its preparation method and application | |
| Li et al. | Floc Kinetics in Dual-coagulation for the Treatment of High-concentration Surfactant-kaolin Wastewater | |
| CN108715508A (en) | A kind of pig farm excrement object inorganic agent and preparation method thereof | |
| CN104016567A (en) | Sludge magnetic dewatering agent and dewatering method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201130 Address after: No.288, Changjiang West Road, Huji street, Hai'an City, Nantong City, Jiangsu Province, 226600 Patentee after: Jiangsu Zhaofang Intelligent Equipment Co.,Ltd. Address before: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Pengbo Information Technology Co.,Ltd. Effective date of registration: 20201130 Address after: 808, floor 8, building B, business center, gangzhilong science and Technology Park, No. 6, Qinglong Road, Qinghua community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Pengbo Information Technology Co.,Ltd. Address before: 710021 Shaanxi city of Xi'an province Weiyang University City Patentee before: SHAANXI University OF SCIENCE & TECHNOLOGY |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 |