Modified straw polypropylene composite flocculant and key production technology thereof

A composite flocculant and modified straw technology, which is applied in the fields of flocculation/sedimentation water/sewage treatment, water pollutants, water/sewage treatment, etc. Phosphorus is difficult to meet the standard and other problems, to achieve the effect of solid sediment, good phosphorus removal effect, and wide application

Inactive Publication Date: 2017-01-11
XUZHOU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of chemical flocculation phosphorus removal are large amount of chemicals, high cost, and large amount of chemical sludge produced. The treatment effect on low-concentration phosphorus-containing wastewater is poor. The treated wastewater still needs to be combined with other processes to further treat wastewater before it can reach the standard. emission
[0004] Patent No. CN101665278 discloses a composite water treatment phosphorus removal flocculant, which is suitable for the treatment of high-concentration phosphorus-containing wastewater and can rapidly reduce the concentration of phosphorus in wastewater. Combined treatment with other processes can make the wastewater discharge up to the standard
The notification number is CN101665279, which discloses a flocculant for removing low-concentration phosphorus in water. The flocculant is synthesized from red mud and aluminum chloride. It can effectively remove low-concentration phosphorus. Phosphorus-containing wastewater has not been treated, and the amount of sludge is large, so it needs to be controlled under strong acid conditions when treating wastewater

Method used

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  • Modified straw polypropylene composite flocculant and key production technology thereof
  • Modified straw polypropylene composite flocculant and key production technology thereof
  • Modified straw polypropylene composite flocculant and key production technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Prepare a modified straw polypropylene composite flocculant according to the following steps in parts by weight:

[0029] Step 1: In the semi-continuous stirred tank reactor, add 237.632 parts of ultra-purified water and 29.387 parts of straw powder, start the mixer in the semi-continuous stirred tank reactor, set the speed at 30.347rpm, and start the semi-continuous stirring The double-walled heating drum in the kettle reactor raised the temperature to 45.866°C, added 32.164 parts of polypropylene and stirred evenly, carried out hydroesterification for 22.731 minutes, added 28.3 parts of dodecyl sulfosuccinate disodium salt, and passed The inflow is 21.750m 3 / min of helium for 0.30 hours; then add 31.195 parts of 2-methyl-N-[3-(trifluoromethyl)phenyl]propionamide in the semi-continuous stirred tank reactor, and start the semi-continuous stirred tank again The double-walled heating drum in the reactor raised the temperature to 62.866°C, kept the temperature for 22.750...

Embodiment 2

[0036] Prepare a modified straw polypropylene composite flocculant according to the following steps in parts by weight:

[0037]Step 1: In the semi-continuous stirred tank reactor, add 462.144 parts of ultra-purified water and 71.632 parts of straw powder, start the mixer in the semi-continuous stirred tank reactor, set the speed at 76.351rpm, and start the semi-continuous stirring The double-walled heating drum in the kettle reactor raised the temperature to 46.863°C, added 141.994 parts of polypropylene and stirred evenly, and carried out hydroesterification. After 33.631 minutes, added 45.143 parts of dodecyl sulfosuccinate disodium salt, The inflow flow is 62.816m 3 / min of helium for 0.95 hours; then add 88.287 parts of 2-methyl-N-[3-(trifluoromethyl)phenyl]propionamide in the semi-continuous stirred tank reactor, and start the semi-continuous stirred tank again The double-walled heating drum in the reactor raised the temperature to 95.863°C, kept the temperature for 33....

Embodiment 3

[0044] Prepare a modified straw polypropylene composite flocculant according to the following steps in parts by weight:

[0045] Step 1: In the semi-continuous stirred tank reactor, add 237.9632 parts of ultra-purified water and 29.9387 parts of straw powder, start the mixer in the semi-continuous stirred tank reactor, set the speed at 30.9347rpm, and start the semi-continuous stirring The double-walled heating drum in the kettle reactor raised the temperature to 45.9866°C, added 32.9164 parts of polypropylene and stirred evenly, carried out hydroesterification for 22.9731 minutes, added 28.93 parts of dodecyl sulfosuccinate disodium salt, and passed The inflow is 21.9750m 3 / min of helium for 0.930 hours; then add 31.9195 parts of 2-methyl-N-[3-(trifluoromethyl)phenyl]propanamide in the semi-continuous stirred tank reactor, and start the semi-continuous stirred tank again The double-walled heating drum in the reactor raised the temperature to 62.9866°C, kept it for 22.9750 m...

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Abstract

The invention discloses a modified straw polypropylene composite flocculant and a key production technology thereof. The modified straw polypropylene composite flocculant is composed of the following components in parts by weight: ultra-purified water, straw powder, polypropylene, disodium dodecanol sulfosuccinate, 2-methyl-N-[3-(trifluoromethyl) phenyl]propionamide, 1,4-bis[(2,6-diethyl-4-methylphenyl)amino]-9,10-anthraquinone, sodium 1-amino-4-mesitylene amino anthraquinone-2-sulfonate, 3,5-dihydroxyphenylmethanol, uranium nanoparticles, [3-(1-amino-2-bromo-4-amino anthraquinone)proyl]trimethy amino methyl sulfate, 2,2'-[1,2-ethylidene di(oxyl-2,1-phenylene azo)]bis[N-(2,3-dihydro-2-oxo-1H-benzimidazole)-5-yl]-3-oxo-butyrylamide, [4-[4-(acetamino)phenylamino]-1-amino-9,10-dihydro-9,10-dioxoanthracene-2-sulfonic acid. The modified straw polypropylene composite flocculant disclosed by the invention has the advantages that addition quantity is low, and flocculated aggregated particles are dispersed and absorbed; reagent cost is low; alum blossom is large, application range is wide, and pH value range is wide; and formation time is short, precipitates are solid, and phosphorous removal effect is good.

Description

technical field [0001] The invention belongs to the field of antirust agents for heating and ventilating pipe surfaces, and in particular relates to a modified straw polypropylene composite flocculant and its key production technology. Background technique [0002] Nitrogen and phosphorus are the main elements that cause water eutrophication, and phosphorus has a special contribution. With the development of society and the continuous improvement of people's living standards, the requirements for urban sewage treatment are getting higher and higher, and the indicators for phosphorus and nitrogen removal in sewage treatment are becoming increasingly strict. Therefore, the control of phosphorus and the treatment of phosphorus-containing wastewater are urgent issues at present. [0003] At present, the phosphorus removal technology of sewage mainly includes chemical phosphorus removal and biological phosphorus removal. Biological phosphorus removal is a relatively economical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/54C02F1/56C02F101/16C02F101/30
CPCC02F1/52C02F1/5263C02F1/54C02F1/56C02F2101/105C02F2101/16C02F2101/30
Inventor 梁峙梁骁
Owner XUZHOU UNIV OF TECH
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