CN104016561A - Belt-type dense-phase deep dewatering system and method - Google Patents
Belt-type dense-phase deep dewatering system and method Download PDFInfo
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- CN104016561A CN104016561A CN201410271328.7A CN201410271328A CN104016561A CN 104016561 A CN104016561 A CN 104016561A CN 201410271328 A CN201410271328 A CN 201410271328A CN 104016561 A CN104016561 A CN 104016561A
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Abstract
The invention discloses a belt-type dense-phase deep dewatering system and method and belongs to the technical field of sludge dewatering. A sludge feeding device and a curing-agent-accelerator adding device of the device are respectively connected with a stirrer, the stirrer is connected to a hydration reaction device and the hydration reaction device is connected with a belt-type filter press dewatering machine. Due to the adoption of the belt-type dense-phase deep dewatering system and method disclosed by the invention, the sludge of which the content of water is 98-99.8% can be dewatered till the content of water is 60% or less; since the curing agent and accelerator are added, the properties of the sludge can be changed so that the sludge can be gathered more easily, the belt-type filter press dewatering machine easily dewaters the sludge, the dewatering efficiency and dewatering speed are increased; and the system has the advantages of simple operation and low running cost.
Description
Technical field
The invention belongs to sludge dewatering technical field, be specifically related to the close phase deep dehydration of a kind of belt system and method.
Background technology
Coming 10 years be wastewater treatment in China market golden age, will build up thousands of sewage works.Every day will be discharged the hundreds of and even up to ten thousand tons of excess sludge of water ratio approximately 99.2% by Mei Zuo sewage work, and the mud of these enormous amount will become a difficult problem following in need of immediate treatment.Sludge disposal technology has comprised concentrated, the dehydration of mud and the technology of dry three aspects:.Domestic existing be the concentrated and dehydration technique of mud substantially, mud is after concentrated and dehydration, generally water ratio can only be reduced to 80% left and right, and developed country just progressively requires the water ratio of mud to be reduced to 20%-30%.Therefore, efficient, economic sludge disposal technology will have huge market.Along with the raising of wastewater treatment rate, sludge yield also constantly increases, and the processing handling problems of mud is further outstanding.Below require sewage work's moisture percentage in sewage sludge that dispatches from the factory to be no more than 60% to disposal China drug in some provinces of mud.
Under this situation, dewatering unit is extremely urgent quickly and easily to find one.Contriver is in conjunction with method and the experience of domestic and international existing dehydrating and curing, through the test of nearly thousand times, development and production KTZJ type mechanical dehydration cure system.This system can make the mud of water ratio 80% remove fast moisture content to water ratio 60% by mechanical method, and this system operation is simple, and running cost is low.Sludge deep fast dewatering treatment process, mud is after modifier modification, directly by belt filter press press filtration fast dewatering.This belt filter press press filtration divides low pressure, middle pressure, three press filtration districts of high pressure, and low pressure place is orifice plate press filtration, and middle pressure adopts the press filtration of flat flute profile pressing plate, and high pressure adopts multistage roll extrusion press filtration.Action is controlled automatically by pneumatic element, and belt speed adopts speed control by frequency variation, requires to regulate according to output and water content, and strainer adopts high strength Polyurethane strainer.This filtering equipment has changed the press filtration after traditional sewage cohesion, but adopts cream to stick with paste the general layout of the direct press filtration of class mud.
Summary of the invention
The present invention is directed to the defect of prior art, propose the method for a kind of belt close phase deep dehydration system and dehydration thereof.
The close phase deep dehydration of a kind of belt system, sludge feeding device and solidifying agent are connected with stirrer respectively with promotor adding set, and stirrer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine; Described sludge feeding device is made up of sludge storage bin and mud feeding machine; Described solidifying agent and promotor adding set be by solidifying agent feed bin, solidifying agent feeding machine, and promotor basin and volume pump composition, solidifying agent feed bin is connected with solidifying agent feeding machine by volume pump separately with promotor basin.
Hydration reaction device is mainly made up of conveying belt.Determine its length and width according to different sludge characteristics, play again the effect that mud is transported to next process simultaneously.After stirring, enter after the hydration reaction stage for special mud, can generate heat and produce a part of gas with foreign flavor, hydration reaction system is at this moment set up the air inducing water-bath system that eliminates the unusual smell.
Described band press filter dewatering machine is made up of strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filter belt flushing system and strainer drive system.
Band press filter dewatering machine is to carry sludge blanket secretly by the strainer of upper and lower two tensionings, S-shaped process from the roll-in cylinder of a succession of regular arrangement, rely on the tension force of strainer itself to form squeezing and the shearing force to sludge blanket, capillary water in sludge blanket is squeezed out, obtain the higher mud cake of solid content, thereby realize sludge dewatering.
Strainer requires it to have the features such as higher tensile strength, resistance to complications, acid and alkali-resistance, resistance to temperature variation, also should consider the specific nature of mud simultaneously, select applicable braiding texture, there is the mud strainer of good permeability and the interception performance to mud granule.
The deviation system of roll-in cylinder is by pneumatics automatic deviation correction.The clamping system of strainer, is controlled by pneumatic system, and strainer tension force general control is at 0.3～0.7MPa, and accepted value is 0.4MPa.Mud of different nature requires differently to belt speed, any specific mud is all existed to a best belt speed span of control, and within the scope of this, dewatering system can ensure certain processing power, can obtain again high-quality mud cake.
A method for deeply dehydrating sludge, carry out in accordance with the following steps:
(1) according to parts by weight, 200 parts, the mud that is 80-99.8% by water content enters stirrer by sludge feeding device, and 5-8 part solidifying agent and 1-2 part properties-correcting agent are entered to stirrer by solidifying agent and promotor adding set, stirs 10min-90min;
(2) material being stirred enters hydration reaction device, reaction 1-15min;
(3) reacted material enters band press filter dewatering machine, and the strainer tension control of band press filter dewatering machine is at 0.3～0.7MPa, by material dewatering, and discharging.
Described solidifying agent is made up of the material of following parts by weight: magnesium salts 20-30 part, oxymuriate 10-20 part, phosphoric acid salt 30-40 part, dibasic alcohol 10-20 part, alum 1-5 part.
Described magnesium salts is magnesium chloride; Described oxymuriate is Potcrate; Described phosphoric acid salt is sodium phosphate, SODIUM PHOSPHATE, MONOBASIC, one or more in disodium-hydrogen; Described dibasic alcohol is butyleneglycol, propylene glycol or cyclohexanediol.
Described properties-correcting agent is made up of the material of following parts by weight: carboxymethyl cellulose 10-20 part, isocyanic ester-cyclodextrin copolymers 5-10 part, styrene-α-methylstyrene-acrylic copolymer 5-10 part, lady's-grass extract 1-5 part, purple stem boneset extract 1-5 part.
The extracting method of described lady's-grass extract is: lady's-grass dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 5-10 times of weight, and merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Hemp Eupatorium dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 5-10 times of weight, and merging filtrate, evaporate to dryness is made.
Beneficial effect of the present invention: adopt the close phase deep dehydration of belt of the present invention system and method, the sludge dewatering that can be 98-99.8% by the water yield is to water-content below 60%, the solidifying agent adding and promotor, can change the character of mud, make it be more prone to assemble, facilitate band press filter dewatering machine dehydration, increased efficiency and the speed of dehydration, this system operation is simple, and running cost is low.
Brief description of the drawings
Fig. 1 is the close phase deep dehydration of belt of the present invention system architecture schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
The close phase deep dehydration of a kind of belt system, sludge feeding device and solidifying agent are connected with stirrer respectively with promotor adding set, and stirrer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine; Described sludge feeding device is made up of sludge storage bin and mud feeding machine; Described solidifying agent and promotor adding set be by solidifying agent feed bin, solidifying agent feeding machine, and promotor basin and volume pump composition, solidifying agent feed bin is connected with solidifying agent feeding machine by volume pump separately with promotor basin.
Described band press filter dewatering machine is made up of strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filter belt flushing system and strainer drive system.
A method for deeply dehydrating sludge, carry out in accordance with the following steps:
(1) according to parts by weight, 200 parts, the mud that is 80% by water content enters stirrer by sludge feeding device, and 5 parts of solidifying agent and 1 part of properties-correcting agent are entered to stirrer by solidifying agent and promotor adding set, stirs 10min;
(2) material being stirred enters hydration reaction device, reaction 1min;
(3) reacted material enters band press filter dewatering machine, and the strainer tension control of band press filter dewatering machine is at 0.3MPa, by material dewatering, and discharging.
Described solidifying agent is made up of the material of following parts by weight: 20 parts, magnesium chloride, 10 parts, Potcrate, 30 parts of sodium phosphates, 10 parts of propylene glycol, 1 part, alum.
Described properties-correcting agent is made up of the material of following parts by weight: 10 parts of carboxymethyl celluloses, 5 parts of isocyanic ester-cyclodextrin copolymers, 5 parts of styrene-α-methylstyrene-acrylic copolymers, 1 part of lady's-grass extract, 1 part of purple stem boneset extract.
The extracting method of described lady's-grass extract is: lady's-grass dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 5 times of weight, and merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Hemp Eupatorium dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 5 times of weight, and merging filtrate, evaporate to dryness is made.
It is 54% mud cake that the method for this embodiment can obtain water ratio.
Embodiment 2
The close phase deep dehydration of a kind of belt system, sludge feeding device and solidifying agent are connected with stirrer respectively with promotor adding set, and stirrer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine; Described sludge feeding device is made up of sludge storage bin and mud feeding machine; Described solidifying agent and promotor adding set be by solidifying agent feed bin, solidifying agent feeding machine, and promotor basin and volume pump composition, solidifying agent feed bin is connected with solidifying agent feeding machine by volume pump separately with promotor basin.
Described band press filter dewatering machine is made up of strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filter belt flushing system and strainer drive system.
A method for deeply dehydrating sludge, carry out in accordance with the following steps:
(1) according to parts by weight, 200 parts, the mud that is 85% by water content enters stirrer by sludge feeding device, and 7 parts of solidifying agent and 1.5 parts of properties-correcting agent are entered to stirrer by solidifying agent and promotor adding set, stirs 30min;
(2) material being stirred enters hydration reaction device, reaction 5min;
(3) reacted material enters band press filter dewatering machine, and the strainer tension control of band press filter dewatering machine is at 0.4MPa, by material dewatering, and discharging.
Described solidifying agent is made up of the material of following parts by weight: 25 parts, magnesium chloride, 15 parts, Potcrate, 35 parts of SODIUM PHOSPHATE, MONOBASIC, 15 parts of cyclohexanediols, 3 parts, alum.
Described properties-correcting agent is made up of the material of following parts by weight: 15 parts of carboxymethyl celluloses, 7 parts of isocyanic ester-cyclodextrin copolymers, 7 parts of styrene-α-methylstyrene-acrylic copolymers, 3 parts of lady's-grass extracts, 3 parts of purple stem boneset extracts.
The extracting method of described lady's-grass extract is: lady's-grass dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 8 times of weight, and merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Hemp Eupatorium dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 8 times of weight, and merging filtrate, evaporate to dryness is made.
It is 52% mud cake that the method for this embodiment can obtain water ratio.
Embodiment 3
The close phase deep dehydration of a kind of belt system, sludge feeding device and solidifying agent are connected with stirrer respectively with promotor adding set, and stirrer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine; Described sludge feeding device is made up of sludge storage bin and mud feeding machine; Described solidifying agent and promotor adding set be by solidifying agent feed bin, solidifying agent feeding machine, and promotor basin and volume pump composition, solidifying agent feed bin is connected with solidifying agent feeding machine by volume pump separately with promotor basin.
Described band press filter dewatering machine is made up of strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filter belt flushing system and strainer drive system.
A method for deeply dehydrating sludge, carry out in accordance with the following steps:
(1) according to parts by weight, 200 parts, the mud that is 90 by water content enters stirrer by sludge feeding device, and 8 parts of solidifying agent and 2 parts of properties-correcting agent are entered to stirrer by solidifying agent and promotor adding set, stirs 80min;
(2) material being stirred enters hydration reaction device, reaction 14min;
(3) reacted material enters band press filter dewatering machine, and the strainer tension control of band press filter dewatering machine is at 0.7MPa, by material dewatering, and discharging.
Described solidifying agent is made up of the material of following parts by weight: 30 parts, magnesium chloride, 20 parts, Potcrate, 40 parts of disodium-hydrogens, 20 parts of butyleneglycols, 5 parts, alum.
Described properties-correcting agent is made up of the material of following parts by weight: 20 parts of carboxymethyl celluloses, 10 parts of isocyanic ester-cyclodextrin copolymers, 10 parts of styrene-α-methylstyrene-acrylic copolymers, 5 parts of lady's-grass extracts, 5 parts of purple stem boneset extracts.
The extracting method of described lady's-grass extract is: lady's-grass dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 10 times of weight, and merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Hemp Eupatorium dried, clays into power, add the 70% ethanolic soln refluxing extraction 3 times of 10 times of weight, and merging filtrate, evaporate to dryness is made.
It is 49% mud cake that the method for this embodiment can obtain water ratio.
Claims (8)
1. the close phase deep dehydration of a belt system, is characterized in that, sludge feeding device and solidifying agent are connected with stirrer respectively with promotor adding set, and stirrer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine; Described sludge feeding device is made up of sludge storage bin and mud feeding machine; Described solidifying agent and promotor adding set be by solidifying agent feed bin, solidifying agent feeding machine, and promotor basin and volume pump composition, solidifying agent feed bin is connected with solidifying agent feeding machine by volume pump separately with promotor basin.
2. the close phase deep dehydration of a kind of belt system according to claim 1, is characterized in that, described band press filter dewatering machine is made up of strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filter belt flushing system and strainer drive system.
3. a method for deeply dehydrating sludge, is characterized in that, carries out in accordance with the following steps:
(1) according to parts by weight, 200 parts, the mud that is 80-99.8% by water content enters stirrer by sludge feeding device, and 5-8 part solidifying agent and 1-2 part properties-correcting agent are entered to stirrer by solidifying agent and promotor adding set, stirs 10min-90min;
(2) material being stirred enters hydration reaction device, reaction 1-15min;
(3) reacted material enters band press filter dewatering machine, and the strainer tension control of band press filter dewatering machine is at 0.3～0.7MPa, by material dewatering, and discharging.
4. a kind of method of deeply dehydrating sludge according to claim 3, is characterized in that, described solidifying agent is made up of the material of following parts by weight: magnesium salts 20-30 part, oxymuriate 10-20 part, phosphoric acid salt 30-40 part, dibasic alcohol 10-20 part, alum 1-5 part.
5. a kind of method of deeply dehydrating sludge according to claim 4, is characterized in that, described magnesium salts is magnesium chloride; Described oxymuriate is Potcrate; Described phosphoric acid salt is sodium phosphate, SODIUM PHOSPHATE, MONOBASIC, one or more in disodium-hydrogen; Described dibasic alcohol is butyleneglycol, propylene glycol or cyclohexanediol.
6. a kind of method of deeply dehydrating sludge according to claim 3, it is characterized in that, described properties-correcting agent is made up of the material of following parts by weight: carboxymethyl cellulose 10-20 part, isocyanic ester-cyclodextrin copolymers 5-10 part, styrene-α-methylstyrene-acrylic copolymer 5-10 part, lady's-grass extract 1-5 part, purple stem boneset extract 1-5 part.
7. a kind of method of deeply dehydrating sludge according to claim 6, is characterized in that, the extracting method of described lady's-grass extract is: lady's-grass is dried, clay into power, add the 70% ethanolic soln refluxing extraction 3 times of 5-10 times of weight, and merging filtrate, evaporate to dryness is made.
8. a kind of method of deeply dehydrating sludge according to claim 6, is characterized in that, the extracting method of described purple stem boneset extract is: Hemp Eupatorium is dried, clay into power, add the 70% ethanolic soln refluxing extraction 3 times of 5-10 times of weight, merging filtrate, evaporate to dryness is made.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104472221A (en) * | 2014-12-22 | 2015-04-01 | 四川藏宝虫草生物科技有限公司 | Method for fermenting mycelia from natural ophiocordyceps sinensis fruiting bodies |
| CN106830620A (en) * | 2017-01-18 | 2017-06-13 | 江苏泽宇环境工程有限公司 | A kind of sludge dehydration device |
| CN110436736A (en) * | 2019-07-18 | 2019-11-12 | 江苏康泰环保股份有限公司 | A kind of Environmental-protection recycling sludge zero discharge integrated processing system |
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Address after: 225300 standard factory building, Fenghuang West Road, Jiangsu, Taizhou, No. 8, No. 168 Patentee after: JIANGSU KANGTAI ENVIRONMENTAL PROTECTION CO., LTD. Address before: 225300 standard factory building, Fenghuang West Road, Jiangsu, Taizhou, No. 8, No. 168 Patentee before: Jiangsu Kintep Environmental Protection Technology Co., Ltd. |