CN102336465A - Filling material for sewage treatment and preparation method thereof - Google Patents
Filling material for sewage treatment and preparation method thereof Download PDFInfo
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- CN102336465A CN102336465A CN2011102574882A CN201110257488A CN102336465A CN 102336465 A CN102336465 A CN 102336465A CN 2011102574882 A CN2011102574882 A CN 2011102574882A CN 201110257488 A CN201110257488 A CN 201110257488A CN 102336465 A CN102336465 A CN 102336465A
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Abstract
The invention discloses a filling material for sewage treatment, which comprises the following ingredients in part by weight: 100 parts of polyether polyol, 44.7 parts of toluene diisocynate, 0.1 to 0.6 part of triethylene diamine, 0.8 part of silicone surface active agents, 3.3 parts of distilled water, 0.06 to 0.14 part of stannous octoate and 20 to 40 parts of carbon source loading materials. A preparation method comprises the following steps of: 1, proportioning materials and weighing according to the weight parts; 2, mixing partial raw materials and controlling the stirring speed in a range being 80 to 100r/min; 3, adding the toluene diisocynate and controlling the stirring speed in a range being 200 to 300 r/min; and 4, carrying out forming and forming, controlling the stirring speed in a range being 400 to 500r/min, pouring mixed liquid into a mold to be foamed and formed after 4 to 5s, placing the foam body into a constant-temperature baking oven after the foaming body has certain intensity, and curing the materials for one day at 100 DEG C. The filling material solves the problem that: generally, in sewage treatment factories, the water outlet total nitrogen is difficult to reach the standard because the water inlet carbon-to-nitrogen ratio is low after the discharge standard is improved.
Description
Technical field
The present invention relates to a kind of filler that is used for WWT and preparation method thereof.
Background technology
Urethane (PU) material is synthesized in nineteen thirty-seven by German doctor OttoBayer the earliest, is a kind of macromolecular material that on its molecular chain, all contains urethane repeating units, can prepare diversified PU material.Though the history that PU material development has only surplus in the of 60 year so far, its " qualifications and record of service " is more than the old kind in the macromolecular material only, because its good performance and extremely common people's attention.The output of global PU product in 1998 is 7,700,000 tons, surpasses 8,600,000 tons in 2000, and global average annual growth rate is 4% ~ 5%.The PU industry of China starts from late 1950s; Since the last century the nineties; The PU industrial boom of China, particularly in recent years, PU industrial expansion speed had surpassed developed country; China (Huludao City) PU industry summit forum according to holding in Huludao City, Liaoning Province in 2009 spreads out of message, and China PU product production has accounted for about 30% of global total amount.A kind of as in the polyurethane foam of the soft bubble of PU has numerous advantages such as porousness, specific surface area height and stability are stronger.
Summary of the invention
The purpose of this invention is to provide a kind of filler that is used for WWT, with solve sewage work generally face improve emission standard after because the C/N ratio water outlet total nitrogen that causes on the low side of intaking is difficult to problem up to standard.
Another object of the present invention provides a kind of preparation method who is used for the WWT filler.
The present invention is through making polyurethane foam by oneself as biofilm packing; Advantages such as it has that bioaffinity is strong, good hydrophilic property and biological charge capacity are big; Be highly suitable for as water-treatment biological film filler; And, can solve the insufficient difficult problem of Sewage Plant carbon source through in polyurethane foam, adding corresponding carbon source.
A kind of filler that is used for WWT of the present invention; The parts by weight of its composition are: 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates (TDI), 0.1 ~ 0.6 part of triethylene diamine, (L580,3.3 parts of zero(ppm) water, 0.06 ~ 0.14 part of stannous octoate and 20 ~ 40 parts of carbon sources load materials to 0.8 part of silicone surfactant.
Described a kind of filler that is used for WWT is characterized in that: it is starch, Mierocrystalline cellulose or maltodextrin that said carbon source loads material.
A kind of filler preparation method who is used for WWT of the present invention, step is following:
The first step, batching: take by weighing according to parts by weight that 20 ~ 40 parts of carbon sources load materials, 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates (TDI), 0.1 ~ 0.6 part of triethylene diamine, 0.8 part of silicone surfactant (L580), 3.3 parts of zero(ppm) water, 0.06 ~ 0.14 part of stannous octoate and 20 ~ 40 parts of carbon sources load materials;
Second step; Part material mixes: the polyether glycol that will claim by weight earlier, triethylene diamine, silicone surfactant, zero(ppm) water and stannous octoate mix; Use the whisking appliance stirring at low speed; Speed control is in the scope of 80-100r/min, and along with the low speed stirring of mixed solution, the carbon source that slowly in mixed solution, adds after weighing loads material;
The 3rd step; Add tolylene diisocyanate: after the carbon source loading material after adding is weighed finished, raising mixed speed, and speed control is in the scope of 200-300r/min; To mixed solution and carbon source material thorough mixing, add after weighing tolylene diisocyanate (TDI);
In the 4th step, foaming: improve stirring velocity, speed control behind the 4-5s, is poured mixed solution in mould foaming in the scope of 400-500r/min, treat to put into constant temperature oven after foams have certain intensity, 100 ℃ of following slakings one day.
Packing density of the present invention is between 0.717 g/cm3～0.911 g/cm3; All be slightly less than water; Need not power-lift can suspend in water; The filler hole is main with 500um～1000um aperture, and specific surface area can provide good mass transfer channel and attaching surface for mikrobe between 3.8712m2/g～9.8370 m2/g.The filler activity is good, and stability is strong, strong shock resistance, and treatment effect is good.
The starch filled ratio of starch based slowly-releasing carbon source filler is 40%, when apparent density is 0.754 g/cm3, filler is all more excellent in each side such as carbon source burst size and slow-releasings; In the static release test of clear water carbon source, the static carbon source burst size of filler is 6.8% of total carbon source amount; Filler denitrification efficiency result of study shows; Every day the nitre nitrogen concentration of intaking be under the 40 mg/L conditions; Filler after discharging through the clear water carbon source is kept the fate that water outlet NO3--N is lower than 15mg/L and is reached 28d; Every day the nitre nitrogen concentration of intaking be under the 20 mg/L conditions, filler dosage every day is can keep water outlet under the operating mode of 0.25g to reach one-level A standard; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
The apparent density of Mierocrystalline cellulose (draft class) slowly-releasing carbon source filler is 0.847 g/cm3, when packing volume is 1cm3, filler is all more excellent in each side effects such as carbon source burst size and slow-releasings; In the static natural release test of clear water carbon source, the static carbon source burst size of filler is 9.6% of total carbon source amount; Filler denitrification efficiency result of study shows; In fs water inlet NO3--N concentration is under the operating mode of 40 ~ 50mg/L; Filler NO3--N clearance maintains between 21% ~ 41.1%; In subordinate phase water inlet NO3--N concentration is under the operating mode of 20 ~ 30mg/L, and filler NO3--N clearance maintains between 22.4% ~ 46.8%; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
When the packing ratio of the emergent carbon source filler of maltodextrin class is 40%, apparent density is 0.776 g/cm3, all more excellent in each side such as carbon source burst size and rapid property; In the static natural release test of clear water carbon source, filler static carbon source burst size when on-test 3.5h is 43.8% of total carbon source amount; Filler denitrification efficiency result of study shows, every day the nitre nitrogen concentration of intaking be under the condition of 40 mg/L, it is 5d that the filler after discharging through the clear water carbon source is kept 30% above nitre nitrogen removal efficiency fate; Utilization of carbon source rate analytical results shows that filler carbon source overall utilization is 68%; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
The invention solves solve sewage work generally face improve emission standard after because the C/N ratio water outlet total nitrogen that causes on the low side of intaking is difficult to problem up to standard.
Embodiment
Technical scheme of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one:The first step, batching: take by weighing 20 parts of starch, 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates (TDI), 0.1 part of triethylene diamine, 0.8 part of silicone surfactant (L580), 3.3 parts of zero(ppm) water and 0.06 part of stannous octoate according to parts by weight;
Second step; Part material mixes: the polyether glycol that will claim by weight earlier, triethylene diamine, silicone surfactant, zero(ppm) water and stannous octoate mix; Use the whisking appliance stirring at low speed; Speed control is in the scope of 80-100r/min, and along with the low speed stirring of mixed solution, the carbon source that slowly in mixed solution, adds after weighing loads material;
The 3rd step; Add tolylene diisocyanate: after the carbon source loading material after adding is weighed finished, raising mixed speed, and speed control is in the scope of 200-300r/min; To mixed solution and carbon source material thorough mixing, add after weighing tolylene diisocyanate (TDI);
In the 4th step, foaming: improve stirring velocity, speed control behind the 4-5s, is poured mixed solution in mould foaming in the scope of 400-500r/min, treat to put into constant temperature oven after foams have certain intensity, 100 ℃ of following slakings one day.
The starch filled ratio of the starch based slowly-releasing carbon source filler of present embodiment is 40%, when apparent density is 0.754 g/cm3, filler is all more excellent in each side such as carbon source burst size and slow-releasings; In the static release test of clear water carbon source, the static carbon source burst size of filler is 6.8% of total carbon source amount; Filler denitrification efficiency result of study shows; Every day the nitre nitrogen concentration of intaking be under the 40 mg/L conditions; Filler after discharging through the clear water carbon source is kept the fate that water outlet NO3--N is lower than 15mg/L and is reached 28d; Every day the nitre nitrogen concentration of intaking be under the 20 mg/L conditions, filler dosage every day is can keep water outlet under the operating mode of 0.25g to reach one-level A standard; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
Embodiment two:The first step, batching: take by weighing 30 parts of Mierocrystalline celluloses, 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates (TDI), 0.3 part of triethylene diamine, 0.8 part of silicone surfactant (L580), 3.3 parts of zero(ppm) water and 0.10 part of stannous octoate according to parts by weight;
Second step; Part material mixes: the polyether glycol that will claim by weight earlier, triethylene diamine, silicone surfactant, zero(ppm) water and stannous octoate mix; Use the whisking appliance stirring at low speed; Speed control is in the scope of 80-100r/min, and along with the low speed stirring of mixed solution, the carbon source that slowly in mixed solution, adds after weighing loads material;
The 3rd step; Add tolylene diisocyanate: after the carbon source loading material after adding is weighed finished, raising mixed speed, and speed control is in the scope of 200-300r/min; To mixed solution and carbon source material thorough mixing, add after weighing tolylene diisocyanate (TDI);
In the 4th step, foaming: improve stirring velocity, speed control behind the 4-5s, is poured mixed solution in mould foaming in the scope of 400-500r/min, treat to put into constant temperature oven after foams have certain intensity, 100 ℃ of following slakings one day.
The apparent density of the draft class slowly-releasing carbon source filler of present embodiment is 0.847 g/cm3, when packing volume is 1cm3, filler is all more excellent in each side effects such as carbon source burst size and slow-releasings; In the static natural release test of clear water carbon source, the static carbon source burst size of filler is 9.6% of total carbon source amount; Filler denitrification efficiency result of study shows; In fs water inlet NO3--N concentration is under the operating mode of 40 ~ 50mg/L; Filler NO3--N clearance maintains between 21% ~ 41.1%; In subordinate phase water inlet NO3--N concentration is under the operating mode of 20 ~ 30mg/L, and filler NO3--N clearance maintains between 22.4% ~ 46.8%; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
Embodiment three:
The first step, batching: take by weighing 40 portions of maltodextrins, 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates (TDI), 0.6 part of triethylene diamine, 0.8 part of silicone surfactant (L580), 3.3 parts of zero(ppm) water and 0.14 part of stannous octoate according to parts by weight;
Second step; Part material mixes: the polyether glycol that will claim by weight earlier, triethylene diamine, silicone surfactant, zero(ppm) water and stannous octoate mix; Use the whisking appliance stirring at low speed; Speed control is in the scope of 80-100r/min, and along with the low speed stirring of mixed solution, the carbon source that slowly in mixed solution, adds after weighing loads material;
The 3rd step; Add tolylene diisocyanate: after the carbon source loading material after adding is weighed finished, raising mixed speed, and speed control is in the scope of 200-300r/min; To mixed solution and carbon source material thorough mixing, add after weighing tolylene diisocyanate (TDI);
In the 4th step, foaming: improve stirring velocity, speed control behind the 4-5s, is poured mixed solution in mould foaming in the scope of 400-500r/min, treat to put into constant temperature oven after foams have certain intensity, 100 ℃ of following slakings one day.
When the packing ratio of the emergent carbon source filler of this embodiment maltodextrin class is 40%, apparent density is 0.776 g/cm3, all more excellent in each side such as carbon source burst size and rapid property; In the static natural release test of clear water carbon source, filler static carbon source burst size when on-test 3.5h is 43.8% of total carbon source amount; Filler denitrification efficiency result of study shows, every day the nitre nitrogen concentration of intaking be under the condition of 40 mg/L, it is 5d that the filler after discharging through the clear water carbon source is kept 30% above nitre nitrogen removal efficiency fate; Utilization of carbon source rate analytical results shows that filler carbon source overall utilization is 68%; The microscopic pattern result of study shows after the utilization of filler denitrifying carbon source, and filling surface is attached with the macro-mixing microorganism species, and has good layered structure, for different microorganisms provides different microenvironments.
Claims (3)
1. filler that is used for WWT, the parts by weight of its composition are: 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates, 0.1 ~ 0.6 part of triethylene diamine, 0.8 part of silicone surfactant, 3.3 parts of zero(ppm) water, 0.06 ~ 0.14 part of stannous octoate and 20 ~ 40 parts of carbon sources load materials.
2. a kind of filler that is used for WWT according to claim 1 is characterized in that: it is starch, Mierocrystalline cellulose or maltodextrin that said carbon source loads material.
3. according to claim 1 or claim 2 a kind of preparation method who is used for the WWT filler, step is following:
The first step, batching: take by weighing 20 ~ 40 parts of carbon source materials, 100 parts of polyether glycols, 44.7 parts of tolylene diisocyanates, 0.1 ~ 0.6 part of triethylene diamine, 0.8 part of silicone surfactant, 3.3 parts of zero(ppm) water, 0.06 ~ 0.14 part of stannous octoate and 20 ~ 40 parts of carbon sources according to parts by weight and load material;
Second step; Part material mixes: the polyether glycol that will claim by weight earlier, triethylene diamine, silicone surfactant, zero(ppm) water and stannous octoate mix; Use the whisking appliance stirring at low speed; Speed control is in the scope of 80-100r/min, and along with the low speed stirring of mixed solution, the carbon source that slowly in mixed solution, adds after weighing loads material;
The 3rd step; Add tolylene diisocyanate: after the carbon source loading material after adding is weighed finished, raising mixed speed, and speed control is in the scope of 200-300r/min; To mixed solution and carbon source material thorough mixing, add after weighing tolylene diisocyanate;
In the 4th step, foaming: improve stirring velocity, speed control behind the 4-5s, is poured mixed solution in mould foaming in the scope of 400-500r/min, treat to put into constant temperature oven after foams have certain intensity, 100 ℃ of following slakings one day.
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| CN 201110257488 CN102336465B (en) | 2011-09-02 | 2011-09-02 | Filling material for sewage treatment and preparation method thereof |
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| CN 201110257488 CN102336465B (en) | 2011-09-02 | 2011-09-02 | Filling material for sewage treatment and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293715A (en) * | 2015-07-03 | 2016-02-03 | 重庆大学 | Method for controlling water body eutrophication by utilizing immobilized white-rot fungi, and application of method |
| CN108946957A (en) * | 2018-07-13 | 2018-12-07 | 太原理工大学 | A method of polyurethane and hydrotalcite compound collecting short chain fatty acids are prepared into slow release carbon source |
| CN109942092A (en) * | 2019-04-18 | 2019-06-28 | 青岛大学 | A kind of simulation test device and test method for artificial swamp dephosphorization |
| CN111621140A (en) * | 2020-04-29 | 2020-09-04 | 中设设计集团环境科技有限公司 | Foaming sponge filler and preparation method thereof |
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| JP2006224087A (en) * | 2005-01-20 | 2006-08-31 | Nippon Steel Chem Co Ltd | Treatment method of wastewater containing nitrate nitrogen |
| CN101575139A (en) * | 2009-06-08 | 2009-11-11 | 清华大学 | Method for treating urban sewage with low carbon nitrogen ratio by using sludge liquor as carbon source |
| CN102115521A (en) * | 2009-12-31 | 2011-07-06 | 东莞市源聚德实业有限公司 | Inflaming retarding sponge |
| CN102134302A (en) * | 2010-01-21 | 2011-07-27 | 东莞市源聚德实业有限公司 | Anti-static sponge |
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2011
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006224087A (en) * | 2005-01-20 | 2006-08-31 | Nippon Steel Chem Co Ltd | Treatment method of wastewater containing nitrate nitrogen |
| CN101575139A (en) * | 2009-06-08 | 2009-11-11 | 清华大学 | Method for treating urban sewage with low carbon nitrogen ratio by using sludge liquor as carbon source |
| CN102115521A (en) * | 2009-12-31 | 2011-07-06 | 东莞市源聚德实业有限公司 | Inflaming retarding sponge |
| CN102134302A (en) * | 2010-01-21 | 2011-07-27 | 东莞市源聚德实业有限公司 | Anti-static sponge |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293715A (en) * | 2015-07-03 | 2016-02-03 | 重庆大学 | Method for controlling water body eutrophication by utilizing immobilized white-rot fungi, and application of method |
| CN108946957A (en) * | 2018-07-13 | 2018-12-07 | 太原理工大学 | A method of polyurethane and hydrotalcite compound collecting short chain fatty acids are prepared into slow release carbon source |
| CN108946957B (en) * | 2018-07-13 | 2021-09-14 | 太原理工大学 | Method for preparing slow-release carbon source by extracting short-chain fatty acid from polyurethane and hydrotalcite in composite manner |
| CN109942092A (en) * | 2019-04-18 | 2019-06-28 | 青岛大学 | A kind of simulation test device and test method for artificial swamp dephosphorization |
| CN109942092B (en) * | 2019-04-18 | 2021-08-10 | 青岛大学 | Simulation test device and test method for artificial wetland dephosphorization |
| CN111621140A (en) * | 2020-04-29 | 2020-09-04 | 中设设计集团环境科技有限公司 | Foaming sponge filler and preparation method thereof |
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| CN102336465B (en) | 2012-12-05 |
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Owner name: CHONGQING DAFANG ECOLOGICAL ENVIRONMENT MANAGEMENT Free format text: FORMER OWNER: CHONGQING UNIVERSITY Effective date: 20150908 |
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Effective date of registration: 20150908 Address after: 401121, Chongqing, Mount Huangshan, Yubei District Road, No. 70 middle reaches of the river two stars, 2, 23 floor Patentee after: The generous ecological environment treatment limited company in Chongqing Address before: 400030 Shapingba District, Sha Sha Street, No. 174, Chongqing Patentee before: Chongqing University |