CN104829088A - Novel sludge dehydrating agent - Google Patents
Novel sludge dehydrating agent Download PDFInfo
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- CN104829088A CN104829088A CN201510220845.6A CN201510220845A CN104829088A CN 104829088 A CN104829088 A CN 104829088A CN 201510220845 A CN201510220845 A CN 201510220845A CN 104829088 A CN104829088 A CN 104829088A
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Abstract
The present invention discloses a novel sludge dehydrating agent, a preparation method and applications thereof, and belongs to the sludge treatment field, wherein poly aluminium chloride, calcium oxide, ferric sulfate, bentonite, starch, and polyacrylamide are mixed according to a certain ratio, and then drying is performed for 20-40 min at a temperature of 80-100 DEG C to prepare the novel sludge dehydrating agent. According to the present invention, the novel sludge dehydrating agent has the good dehydrating effect, the water content of the dehydrated sludge is 40-50%, the polyacrylamide content is low, the environmental pollution is low, the preparation process is simple, the cost is low, and the novel sludge dehydrating agent is suitable for large-scale sludge dehydrating treatment.
Description
Technical field
The present invention relates to a kind of preparations and applicatio of sludge dehydrating agent, particularly relate to a kind of New Type of Sludge Dewatering agent and preparation method thereof and application, belong to field of sludge treatment.
Background technology
Usually containing a large amount of moisture in mud, water ratio, up to 97.5%-99.5%, causes the volume of mud very huge, brings very large difficulty and significantly adds processing costs, therefore to subsequent disposal operation and transport.Processed must be carried out, to reduce the volume of mud to mud.The normal method adopted nurses one's health mud with one or more chemical agents at present, thus change the character of mud granule, is convenient to the removal of contained humidity in mud.Sludge dehydrating agent the most frequently used is at present cationic-type polyacrylamide (CPAM), although CPAM has good sludge dewatering effect, but its shortcoming being used as sludge dehydrating agent in a large number also manifests day by day, it is difficult to degraded under field conditions (factors), secondary pollution is caused to environment, and the organic solvent such as the exhibiting high surface promoting agent used in CPAM building-up process also can to environment.So, find a kind of existing good dewatering performance of sludge, less on the impact that environment brings again, and the New Type of Sludge Dewatering agent that sludge treatment expense is also lower, become the focus of research at present.
Summary of the invention
In order to improve dewatering performance of sludge, avoid the environmental pollution using polyacrylamide to cause as sludge dehydrating agent in a large number, the invention discloses a kind of New Type of Sludge Dewatering agent and preparation method thereof and application, this sludge dehydrating agent is composited by plurality of raw materials, and dehydrating effect is good, and polyacrylamide amine content is few, environmental pollution is little, its preparation technology is simple, with low cost, is applicable to large-scale sludge dewatering treatment.
One of the object of the invention is open a kind of New Type of Sludge Dewatering agent, and this sludge dehydrating agent consists of the following composition: polymerize aluminum chloride, calcium oxide, ferric sulfate, wilkinite, starch, polyacrylamide.
As one of preferred version of the present invention, this sludge dehydrating agent is grouped into by the one-tenth of following weight percent;
PB1 gene: 30-40 part;
Ferric sulfate Fe
2(SO
4)
3: 20-30 part;
Calcium oxide CaO:10-20 part;
Wilkinite: 10-15 part;
Starch: 5-10 part;
Polyacrylamide PAM:1-5 part.
As preferred version two of the present invention, this sludge dehydrating agent is grouped into by the one-tenth of following weight percent;
PB1 gene: 32 parts;
Ferric sulfate Fe
2(SO
4)
3: 28 parts;
Calcium oxide CaO:15 part;
Wilkinite: 12 parts;
Starch: 8 parts;
Polyacrylamide PAM:5 part.
As preferred version three of the present invention, this sludge dehydrating agent is grouped into by the one-tenth of following weight percent;
PB1 gene: 35 parts;
Ferric sulfate Fe
2(SO
4)
3: 25 parts;
Calcium oxide CaO:18 part;
Wilkinite: 10 parts;
Starch: 9 parts;
Polyacrylamide PAM:3 part.
Two of object of the present invention is to provide the preparation method of above-mentioned New Type of Sludge Dewatering agent, and its step is as follows:
By polymerize aluminum chloride, calcium oxide, ferric sulfate, wilkinite, starch, polyacrylamide according to after the mixing of certain proportioning, under 80-100 DEG C of temperature condition, dry 20-40 minute, is prepared from.
Three of object of the present invention is to provide the application of above-mentioned New Type of Sludge Dewatering agent in sludge treatment:
(1) coagulation: add New Type of Sludge Dewatering agent in mud, add-on is the 0.1-1.0% of sludge quality, stirs 3-5 minute, obtains coagulate sludge;
(2) dewater: the coagulate sludge pressure filter of step (1) is carried out filter-press dehydration, and pressure filter is the one in plate-and-frame filter press, belt filter press, diaphragm filter press.
Composite sludge dehydrant of the present invention and preparation method thereof and application, compared with prior art, its advantage is as follows:
1) be composited by plurality of raw materials, the reasonable compatibility of raw material shows good sludge dewatering synergy, and dehydrated sludge water ratio is 40-50%.
2) composite sludge dehydrant is ensureing that under the prerequisite that dehydrating effect is stable, dosing is few, and environmental pollution is little, and processing cost is low.
3) polymerize aluminum chloride and ferric sulfate are as the main compatibility composition of compound medicament, make full use of the negative charge with Sludge Surface in inorganic metal coagulating agent, reduce sludge specific resistance, make it be easy to dehydration.
4) calcium oxide is conducive to the sour environment improving mud, and the extracellular polymeric avoiding the formation of mud flco dissolves, thus is conducive to the dehydration of mud.
5) bentoniticly add, play the effect of dispersion stabilizer, the specific surface area of the polymer particle of generation is increased gradually, and its adsorptive power also increases, thus generates the larger product of molecular weight.
6) starch and combining of polyacrylamide add, utilize the bridge linking effect of natural polymer minor structure, connect more polymkeric substance, the free copolymer in water is tailed off, thus overcome that to add the incident chemical feeding quantity of single polymers excessive, the problem that successful reduces.
7) polyacrylamide amine content is few, and environmental pollution is little, and preparation technology is simple, with low cost, is applicable to large-scale sludge dewatering treatment.
Embodiment
Below will further illustrate the present invention by specific embodiment, but it should be appreciated by those skilled in the art that the specific embodiment of the invention and do not limit the present invention in any way.Take up an official post on basis of the present invention and how all fall within protection scope of the present invention with replacement.
Embodiment 1: preparation and dehydration
Get polymerize aluminum chloride 32kg, ferric sulfate 28kg, calcium oxide 15kg, wilkinite 12kg, after starch 8kg, polyacrylamide 5kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
The sludge dehydrating agent prepared by aforesaid method is applied to the excess sludge of certain municipal sewage plant, and this moisture percentage in sewage sludge is 98.5%.Method is as follows: the New Type of Sludge Dewatering agent adding above-mentioned preparation in this mud, add-on is 0.8% of sludge quality weight in wet base, stir 3-5 minute, obtain coagulate sludge, above-mentioned coagulate sludge plate-and-frame filter press is carried out positive press-dehydrating, dwell pressure 1.6Mpa, dwell time 30min, release blowing, dehydrated sludge water ratio 48.4%.
Embodiment 2: preparation and dehydration
Get polymerize aluminum chloride 35kg, ferric sulfate 25kg, calcium oxide 18kg, wilkinite 10kg, after starch 9kg, polyacrylamide 3kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
The sludge dehydrating agent prepared by aforesaid method is applied to certain Sewage Treatment at Pharmaceutical Factory excess sludge, and this moisture percentage in sewage sludge is 97.8%.Method is as follows: the New Type of Sludge Dewatering agent adding above-mentioned preparation in this mud, add-on is 0.6% of sludge quality weight in wet base, stir 3-5 minute, obtain coagulate sludge, above-mentioned coagulate sludge diaphragm filter press is carried out positive press-dehydrating, dwell pressure 1.8Mpa, dwell time 20min, release blowing, dehydrated sludge water ratio 45.7%.
Embodiment 3: preparation and dehydration
Get polymerize aluminum chloride 38kg, ferric sulfate 24kg, calcium oxide 12kg, wilkinite 15kg, after starch 6kg, polyacrylamide 5kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
The sludge dehydrating agent prepared by aforesaid method is applied to certain chemical plant sewage disposal excess sludge, and this moisture percentage in sewage sludge is 97.5%.Method is as follows: the New Type of Sludge Dewatering agent adding above-mentioned preparation in this mud, add-on is 0.5% of sludge quality weight in wet base, stirs 3-5 minute, obtains coagulate sludge, by above-mentioned coagulate sludge belt filter press filter-press dehydration, dehydrated sludge water ratio 49.3%.
Embodiment 4: contrast experiment
New Type of Sludge Dewatering agent prepared by Example 1 is as of the present invention group, certain commercially available cationic-type polyacrylamide is control group one, and certain commercially available composite sludge dehydration agent (composition is iron trichloride, aluminum chloride, calcium oxide, magnesium oxide, flyash, polyacrylamide) is control group two.Three kinds of sludge dehydrating agents are applied to so-and-so municipal sewage plant excess sludge, and this moisture percentage in sewage sludge is 98.5%.Method is identical and as follows: in this mud, add above-mentioned three kinds of sludge dehydrating agents respectively, add-on is 1% of sludge quality weight in wet base, stir 3-5 minute, obtain coagulate sludge, above-mentioned coagulate sludge plate-and-frame filter press is carried out positive press-dehydrating, dwell pressure 1.8Mpa, dwell time 30min, release blowing, dehydrated sludge water ratio is respectively of the present invention group: 46.3%, control group one: 72.5%, control group two: 60.6%.As can be seen here, under the prerequisite that, dehydration conditions identical at dosage is identical, the present invention is better to this municipal sludge dehydrating effect.
Embodiment 5: contrast experiment
Of the present invention group: get polymerize aluminum chloride 35kg, after ferric sulfate 25kg, calcium oxide 18kg, wilkinite 10kg, starch 9kg, polyacrylamide 3kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
Control group: get polymerize aluminum chloride 50kg, after calcium oxide 28kg, wilkinite 10kg, starch 9kg, polyacrylamide 3kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
The sludge dehydrating agent using the invention described above group and control group to prepare respectively dewaters to the excess sludge getting certain municipal sewage plant, this moisture percentage in sewage sludge is 98.5%, process identical and as follows: in this mud, add above-mentioned two kinds of sludge dehydrating agents respectively, add-on is 0.5% of sludge quality weight in wet base, stir 3-5 minute, obtain coagulate sludge, above-mentioned coagulate sludge plate-and-frame filter press is carried out positive press-dehydrating, dwell pressure 2.0Mpa, dwell time 20min, release blowing, dehydrated sludge water ratio is respectively of the present invention group: 47.2%, control group: 62.1%.As can be seen here, change is carried out to the sludge dehydrating agent of the embodiment of the present invention 2 as follows: remove the ferric sulfate in formula, polymerize aluminum chloride in increasing formula is to 50kg, calcium oxide in increasing formula is to 28kg, constant at other formulas, under the prerequisite that experiment condition is identical, control group obviously reduces sludge dewatering efficiency, this illustrates that medicament compatibility of the present invention shows the synergy good to sludge dewatering, lacks and the formula changed wherein will have influence on the dehydrating effect of whole sludge dehydrating agent.
Embodiment 6: contrast experiment
Of the present invention group: get polymerize aluminum chloride 32kg, after ferric sulfate 28kg, calcium oxide 15kg, wilkinite 12kg, starch 8kg, polyacrylamide 5kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
Control group: get polymerize aluminum chloride 44kg, after ferric sulfate 15kg, calcium oxide 5kg, wilkinite 18kg, starch 12kg, polyacrylamide 6kg fully mix, under 80-100 DEG C of temperature condition, dry 20-40 minute, makes sludge dehydrating agent.
The sludge dehydrating agent using the invention described above group and control group to prepare respectively dewaters to the excess sludge getting certain municipal sewage plant, this moisture percentage in sewage sludge is 98.5%, process identical and as follows: in this mud, add above-mentioned two kinds of sludge dehydrating agents respectively, add-on is 0.7% of sludge quality weight in wet base, stir 3-5 minute, obtain coagulate sludge, above-mentioned coagulate sludge plate-and-frame filter press is carried out positive press-dehydrating, dwell pressure 2.0Mpa, dwell time 20min, release blowing, dehydrated sludge water ratio is respectively of the present invention group: 47.5%, control group: 64.9%.As can be seen here, the scope exceeding the claims in the present invention 2 when the dosages distribution of sludge dehydrating agent makes, constant at other formulas, under the prerequisite that experiment condition is identical, control group obviously reduces sludge dewatering efficiency, this illustrates to only have and is carried out according to ratio of the present invention preparing the sludge dehydrating agent be prepared from by various medicament, just can reach sludge dewatering effect of the present invention.
Claims (8)
1. a New Type of Sludge Dewatering agent, is characterized in that, consists of the following composition: polymerize aluminum chloride, calcium oxide, ferric sulfate, wilkinite, starch, polyacrylamide.
2. a kind of New Type of Sludge Dewatering agent as claimed in claim 1, is characterized in that, be grouped into by the one-tenth containing following weight percent;
PB1 gene: 30-40 part;
Ferric sulfate Fe
2(SO
4)
3: 20-30 part;
Calcium oxide CaO:10-20 part;
Wilkinite: 10-15 part;
Starch: 5-10 part;
Polyacrylamide PAM:1-5 part.
3. a kind of New Type of Sludge Dewatering agent as claimed in claim 2, is characterized in that, be grouped into by the one-tenth containing following weight percent;
PB1 gene: 32 parts;
Ferric sulfate Fe
2(SO
4)
3: 28 parts;
Calcium oxide CaO:15 part;
Wilkinite: 12 parts;
Starch: 8 parts;
Polyacrylamide PAM:5 part.
4. a kind of New Type of Sludge Dewatering agent as claimed in claim 3, is characterized in that, be grouped into by the one-tenth containing following weight percent;
PB1 gene: 35 parts;
Ferric sulfate Fe
2(SO
4)
3: 25 parts;
Calcium oxide CaO:18 part;
Wilkinite: 10 parts;
Starch: 9 parts;
Polyacrylamide PAM:3 part.
5. the preparation method of the New Type of Sludge Dewatering agent as described in as arbitrary in claim 1-4, it is characterized in that, by polymerize aluminum chloride, calcium oxide, ferric sulfate, wilkinite, starch, polyacrylamide according to after the mixing of certain proportioning, under 80-100 DEG C of temperature condition, dry 20-40 minute, is prepared from.
6. the new application of sludge dehydrating agent in sludge dewatering as claimed in claim 4.
7. apply as claimed in claim 5, it is characterized in that, comprise the following steps:
(1) coagulation: add New Type of Sludge Dewatering agent in mud, stirs 3-5 minute, obtains coagulate sludge;
(2) dewater: the coagulate sludge pressure filter of step (1) is carried out filter-press dehydration.
8. apply as claimed in claim 6, it is characterized in that, in step (1), the add-on of New Type of Sludge Dewatering agent is the 0.1-1.0% of sludge quality; Pressure filter in step (2) is the one in plate-and-frame filter press, belt filter press, diaphragm filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220845.6A CN104829088A (en) | 2015-05-04 | 2015-05-04 | Novel sludge dehydrating agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220845.6A CN104829088A (en) | 2015-05-04 | 2015-05-04 | Novel sludge dehydrating agent |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645730A (en) * | 2016-01-14 | 2016-06-08 | 上海交通大学 | Energy-saving quick dewatering method of argillaceous biomass refuse |
| CN105936581A (en) * | 2016-06-12 | 2016-09-14 | 山东源根化学技术研发有限公司 | Inorganic flocculant, preparation method thereof and inorganic flocculant and papermaking sludge dehydration process using the same |
| CN106110759A (en) * | 2016-08-11 | 2016-11-16 | 上海洗霸科技股份有限公司 | Environment-friendly type paint slag dehydrating and conditioning agent and application thereof |
| CN106830621A (en) * | 2017-02-27 | 2017-06-13 | 河海大学 | A kind of composite sludge dehydration agent and its preparation method and application |
| CN108178488A (en) * | 2017-12-12 | 2018-06-19 | 常州莱尚纺织品有限公司 | A kind of preparation method of sludge dehydrating agent |
| CN108863018A (en) * | 2018-07-02 | 2018-11-23 | 安庆丰源化工有限公司 | A kind of industrial sludge deep dehydration conditioner and preparation method thereof |
| CN109775803A (en) * | 2017-11-14 | 2019-05-21 | 柳州市皇盛环保科技有限公司 | A kind of inorganic dehydration of tar agent and preparation method thereof |
| CN109796120A (en) * | 2017-11-15 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of industrial sludge dehydrating agent and preparation method thereof |
| CN110372175A (en) * | 2019-08-30 | 2019-10-25 | 重庆艾克洛环保科技有限公司 | A kind of sludge conditioner and sludge drying processing method |
| CN111018311A (en) * | 2019-11-26 | 2020-04-17 | 浙江海逸环科院有限公司 | Normal-temperature modified sludge dehydrating agent and preparation method thereof |
| CN115231789A (en) * | 2022-08-17 | 2022-10-25 | 东南大学 | Preparation method of printing and dyeing biochemical sludge composite dehydrating agent |
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2015
- 2015-05-04 CN CN201510220845.6A patent/CN104829088A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645730B (en) * | 2016-01-14 | 2018-10-19 | 上海交通大学 | A kind of the energy saving of shale biomass garbage quickly goes water method |
| CN105645730A (en) * | 2016-01-14 | 2016-06-08 | 上海交通大学 | Energy-saving quick dewatering method of argillaceous biomass refuse |
| CN105936581B (en) * | 2016-06-12 | 2020-11-03 | 山东源根化学技术研发有限公司 | Inorganic flocculant, preparation method of inorganic flocculant and papermaking sludge dewatering process using inorganic flocculant |
| CN105936581A (en) * | 2016-06-12 | 2016-09-14 | 山东源根化学技术研发有限公司 | Inorganic flocculant, preparation method thereof and inorganic flocculant and papermaking sludge dehydration process using the same |
| CN106110759A (en) * | 2016-08-11 | 2016-11-16 | 上海洗霸科技股份有限公司 | Environment-friendly type paint slag dehydrating and conditioning agent and application thereof |
| CN106830621A (en) * | 2017-02-27 | 2017-06-13 | 河海大学 | A kind of composite sludge dehydration agent and its preparation method and application |
| CN109775803A (en) * | 2017-11-14 | 2019-05-21 | 柳州市皇盛环保科技有限公司 | A kind of inorganic dehydration of tar agent and preparation method thereof |
| CN109796120A (en) * | 2017-11-15 | 2019-05-24 | 柳州市皇盛环保科技有限公司 | A kind of industrial sludge dehydrating agent and preparation method thereof |
| CN108178488A (en) * | 2017-12-12 | 2018-06-19 | 常州莱尚纺织品有限公司 | A kind of preparation method of sludge dehydrating agent |
| CN108863018A (en) * | 2018-07-02 | 2018-11-23 | 安庆丰源化工有限公司 | A kind of industrial sludge deep dehydration conditioner and preparation method thereof |
| CN110372175A (en) * | 2019-08-30 | 2019-10-25 | 重庆艾克洛环保科技有限公司 | A kind of sludge conditioner and sludge drying processing method |
| CN111018311A (en) * | 2019-11-26 | 2020-04-17 | 浙江海逸环科院有限公司 | Normal-temperature modified sludge dehydrating agent and preparation method thereof |
| CN115231789A (en) * | 2022-08-17 | 2022-10-25 | 东南大学 | Preparation method of printing and dyeing biochemical sludge composite dehydrating agent |
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Application publication date: 20150812 |
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