CN101955249B - Preparation method of dehydrating agent special for cow dung - Google Patents
Preparation method of dehydrating agent special for cow dung Download PDFInfo
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- CN101955249B CN101955249B CN201010173512XA CN201010173512A CN101955249B CN 101955249 B CN101955249 B CN 101955249B CN 201010173512X A CN201010173512X A CN 201010173512XA CN 201010173512 A CN201010173512 A CN 201010173512A CN 101955249 B CN101955249 B CN 101955249B
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Abstract
The invention discloses a preparation method of a dehydrating agent special for cow dung, comprising the following steps of: pumping 800L of deionized water into a reaction kettle; raising the temperature to 35DEG C; starting and stirring to maintain the rotating speed at 60r/min; sequentially adding polymerized aluminum chloride, potassium alum (K2SO4, AL2(SO4)3.24H2O) and a surfactant under the conditions of maintaining the temperature of not less than 35DEG C and stirring at 60r/min until the mixture is completely dissolved to obtain a mixed solution; slowly adding potassium ferrate in the prepared mixed solution; when the potassium ferrate is completely dissolved, continuing stirring for 10 minutes; sequentially adding a thickening agent or polyacrylamide under the condition that the rotating speed and the temperature are unchanged and continuing stirring for 30 minutes to obtain the dehydrating agent; placing the prepared dehydrating agent into an ageing tank, spraying the reaction kettle with 20L of deioonized water for two times, consuming 10L of water for each time and combining the washing water in two times and dissolving into the ageing tank; and defoaming the ageing tank for 24h in vacuum and obtaining the dehydrating agent special for cow dung after the detection is qualified. The invention has the advantages of strong pertinence, low cost and high treatment efficiency.
Description
Technical field
The present invention relates to a kind of preparation method of cow dung special dehydrant.Be applied to the hygienic environment-protecting field.
Background technology
People's material requirement has been enriched in the rise of batch production intensive culture industry, but has also brought spreading unchecked of fecal sewage, has caused the pollution to water source, air, environment, and fowl and animal excrement is again a kind of main biomass energy.China's fowl and animal excrement total resources is about 8.5 hundred million tons at present, and wherein cow dung is 5.78 hundred million tons, tears 4,890 ten thousand tons in standardization coal open, actively develops a kind of cow dung solid-liquid separation technique and product of turning harm into good, and seems very to chase after to cut.
Science and technology is looked into new result and is shown, the existing market commercialization this type of machinery when carrying out Separation of Solid and Liquid, adopt thin up to reduce the surface tension of separated object mostly.Problem is: one is not suitable for North China, northeast short regional operation throughout the year of frost-free period, and two have wasted a large amount of precious water resource, and we have carried out research energetically for this reason, final whole succeeding, and definite designation " physico-chemical process is handled the cow dung systems technology ".
The present invention has remedied the deficiency of prior art products; Do not need thin up or handle through multistage minimizing; After application present technique product " cow dung is special dehydrant just " is spared matter; Hydrophilic group in the cow dung is destroyed, and surface tension reduces, and drops into the special-purpose unit (this unit is a patented product) that matches and directly carries out Solid-Liquid Separation.Divide solid formation fiber content >=70% manage out, fibrous matter after treatment can be used for the fiberboard, biodegradation nutrient cup, flowerpot of production high added value etc.Liquid phase after the separation has no longer included pathogenic bacteria, can be used as the liquid fertilizer of high-quality, serves the ecological agriculture and cultivates pollution-free vegetable with fertile.
Basically inorganic dehydrating agent is with low molecule or low electropositive reason; When unstability can not be taken care of for a long time,, produce deposition from bodily form hydrate; Do not dissolve flocculation efficiency is reduced; The reason of the low flocculability of particularly small organic property particle, organic property such as fowl and animal excrement material where applicable, the shortcoming that dewatering efficiency is reduced.Representational organic property flocculant PAM is useful in moisture content and when the fowl poultry of 80% degree, fully mixes, and mixing effect can not get, and can not look to high dehydrating effect.
Summary of the invention
For the defective that solves above-mentioned prior art the invention provides a kind of with strong points, the preparation method of a kind of cow dung special dehydrant that cost is low, treatment effeciency is high.
For the preparation method of a kind of cow dung special dehydrant of the defective the present invention who overcomes above-mentioned prior art, its preparation process is following:
Step 1, the 800L deionized water is pumped in the agitated reactor, be warming up to 35 ℃, open and stir, make that rotating speed is 60r/min;
Step 2, with aluminium polychloride, potassium alum (K
2SO
4, Al
2(SO
4)
3, 24H
2O), surfactant, keeping temperature>=35 ℃, stir under the 60r/min condition and add successively, make mixed liquor to whole dissolvings;
Step 3, with potassium ferrate (with 100%K
2FeO
4Meter), slowly add in the mixed liquor of preparation;
Step 4, when treating that potassium ferrate dissolves fully, continue to stir again 10 minutes,, add thickener or polyacrylamide successively under the not high condition of temperature, continue to stir 30 minutes, make dehydrating agent at rotating speed;
Step 5, the dehydrating agent that makes is put into ageing tank, the shared 20L deionization of agitated reactor hydro-peening twice, each water 10L, twice washings merge and dissolve in ageing tank;
Step 6, ageing tank make the cow dung special dehydrant after detection is qualified when vacuum froth breaking 24h.
Said aluminium polychloride is a base, polymerization degree n=5.
By weight percentage: described aluminium polychloride 1.5-2.5%, surfactant 5%, potassium alum 5%, potassium ferrate 0.5%, thickener 0.5% or polyacrylamide 0.75%.
The cow dung that beneficial effect of the present invention in sum is a moisture content 80% adds this special dehydrant by 1% after mixed and stir in three minutes, has force of flocculation immediately, and the leakage phenomenon of fine particle produces hardly when the cow dung pressurization is separated; Ordorless flavor when carrying out the Separation of Solid and Liquid operation behind the adding present technique product has improved the work environment.
Description of drawings
Fig. 1 is the preparation method's of a kind of cow dung special dehydrant of the present invention process chart.
The specific embodiment
The preparation method of a kind of cow dung special dehydrant of the present invention as shown in Figure 1 comprises following process steps: (only being the example explanation with 1000kg)
Step 1, the 800L deionized water is pumped in the agitated reactor, be warming up to 35 ℃, open and stir, make that rotating speed is 60r/min;
Step 2, take by weighing 25kg aluminium polychloride, potassium alum (K
2SO
4, Al
2(SO
4)
3, 24H
2O) 50kg, surfactant 50kg are keeping temperature>=35 ℃, stir under the 60r/min condition to add successively, make mixed liquor to whole dissolvings;
It is that the 50kg potassium ferrate is (with 100%K that quality is got in step 3, metering
2FeO
4Meter), slowly add in the mixed solution of step 2 preparation;
Step 4, when treating that potassium ferrate dissolves fully, continue to stir again 10 minutes,, add 5kg thickener or 7.5kg polyacrylamide under the temperature-resistant condition successively, continue to stir 30 minutes, make dehydrating agent at rotating speed;
Step 5, step 4 solution is put into ageing tank, agitated reactor is with 20L deionization hydro-peening twice, and each water 10L, twice washings merge and dissolve in ageing tank;
Step 6, ageing tank make the cow dung special dehydrant after detection is qualified when vacuum froth breaking 24h.
What should explain at last is: above embodiment is only in order to explanation the present invention and unrestricted technical scheme described in the invention; Therefore; Although this specification specifies the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art is to be understood that; Still can make amendment or be equal to replacement present technique, it all should be encompassed in the claim scope of the present invention.
Claims (2)
1. the preparation method of a cow dung special dehydrant, it is characterized in that: its preparation process is following:
Step 1, the 800L deionized water is pumped in the agitated reactor, be warming up to 35 ℃, open and stir, make that rotating speed is 60r/min;
Step 2, with aluminium polychloride, potassium alum, the chemical formula of said potassium alum is K
2SO
4Al
2(SO
4)
324H
2O, surfactant are keeping temperature>=35 ℃, stir under the 60r/min condition to add successively, make mixed liquor to whole dissolvings;
Step 3, with potassium ferrate, slowly add in the mixed liquor of preparation;
Step 4, when treating that potassium ferrate dissolves fully, continue to stir again 10 minutes,, add thickener or polyacrylamide under the temperature-resistant condition successively, continue to stir 30 minutes, make dehydrating agent at rotating speed;
Step 5, the dehydrating agent that makes is put into ageing tank, agitated reactor is with 20L deionization hydro-peening twice, and each water 10L, twice washings merge and dissolve in ageing tank;
Step 6, ageing tank make the cow dung special dehydrant after detection is qualified when vacuum froth breaking 24h; In the above-mentioned steps, with 100%K
2FeO
4As benchmark, by weight percentage, described aluminium polychloride addition is 1.5-2.5%, surfactant 5%, potassium alum 5%, potassium ferrate 0.5%, thickener 0.5% or polyacrylamide 0.75%.
2. the preparation method of a kind of cow dung special dehydrant according to claim 1 is characterized in that: the polymerization degree n of said aluminium polychloride=5.
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|---|---|---|---|
| CN201010173512XA CN101955249B (en) | 2010-05-12 | 2010-05-12 | Preparation method of dehydrating agent special for cow dung |
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|---|---|
| CN101955249A CN101955249A (en) | 2011-01-26 |
| CN101955249B true CN101955249B (en) | 2012-07-11 |
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|---|---|---|---|
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583949A (en) * | 2012-01-16 | 2012-07-18 | 宁波工程学院 | Application of ferrate in municipal sludge conditioning |
| CN103723906B (en) * | 2013-12-20 | 2015-01-14 | 湖南大学 | Deep dehydration recycling method for livestock and poultry feces |
| CN107399796A (en) * | 2017-09-20 | 2017-11-28 | 青岛亚通达铁路设备有限公司 | A kind of processing method of liquid dung |
| CN107698127B (en) * | 2017-10-30 | 2024-01-19 | 辽宁地知源环境工程有限公司 | Livestock manure treatment device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458076A (en) * | 2002-05-17 | 2003-11-26 | 石油大学(北京) | Coagulating and dewatering treatment method for waste drilling fluid |
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2010
- 2010-05-12 CN CN201010173512XA patent/CN101955249B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458076A (en) * | 2002-05-17 | 2003-11-26 | 石油大学(北京) | Coagulating and dewatering treatment method for waste drilling fluid |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平10-337575A 1998.12.22 |
| 杨丽等.高效污泥脱水剂的应用.《当代化工》.2007,第36卷(第4期), * |
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Effective date of registration: 20161125 Address after: Jintai Road 231100 Anhui province Changfeng County Shuangfeng Economic Development Zone Patentee after: Hefei Futong Environmental Protection New Energy Technology Co.,Ltd. Address before: Jintai Road Shuangfeng Industrial Zone in Hefei city of Anhui Province, No. 18 230011 Patentee before: Hefei Futen Industrial Automation Co., Ltd. |
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| CP03 | Change of name, title or address |
Address after: 231100 No. 48 Fung Xia Road, Shuangfeng Development Zone, Changfeng County, Hefei, Anhui Patentee after: Anhui Fortis environmental protection and energy saving Polytron Technologies Inc Address before: 231100 Jintai Road, Shuangfeng Economic Development Zone, Changfeng County, Anhui, China Patentee before: Hefei Futong Environmental Protection New Energy Technology Co.,Ltd. |
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