CN104016561B - The close phase deep dehydration of a kind of belt system and method - Google Patents
The close phase deep dehydration of a kind of belt system and method Download PDFInfo
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Abstract
The invention discloses the close phase deep dehydration of a kind of belt system and method that belongs to sludge dewatering technical field. The sludge feeding device of this device and curing agent are connected with mixer respectively with promoter adding set, and mixer is connected with hydration reaction device, and hydration reaction device is connected with band press filter dewatering machine. 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 curing agent adding and promoter, 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 is simple to operate, and operating cost is low.
Description
Technical field
The invention belongs to sludge dewatering technical field, be specifically related to a kind of belt close phase deep dehydration system andMethod.
Background technology
Coming 10 years be wastewater treatment in China market golden age, will build up thousands of sewage treatment plants. OftenEvery day will be discharged the hundreds of and even up to ten thousand tons of excess sludge of moisture content approximately 99.2%, these numbers by seat sewage treatment plantMeasure huge mud and will become a difficult problem following in need of immediate treatment. Sludge disposal technology comprised mud concentrated,The technology of dehydration and dry three aspects:. Domestic existing be the concentrated and dehydration technique of mud substantially, mud is through denseAfter contracting and dehydration, general moisture content can only be reduced to 80% left and right, and developed country just progressively requires mudMoisture content is 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 treatment plant's moisture percentage in sewage sludge that dispatches from the factory to be no more than to disposal China drug in some provinces of mud60％。
Under this situation, dewater unit is extremely urgent quickly and easily to find one. Inventor is in conjunction with both at home and abroadThe method of existing dehydrating and curing and experience, through the test of nearly thousand times, development and production KTZJ type mechanical dehydrationCure system. This system can make the mud of moisture content 80% remove fast moisture content to moisture by mechanical methodRate 60%, this system is simple to operate, and operating cost is low. Sludge deep fast dewatering treatment process, mud warpAfter modifier modification, directly by belt filter press press filtration fast dewatering. This belt filter press press filtration divide low pressure,Middle pressure, three press filtration districts of high pressure, low pressure place is orifice plate press filtration, middle pressure adopts the press filtration of flat flute profile pressing plate, high pressureAdopt multistage roll extrusion press filtration. Action is controlled automatically by pneumatic element, and belt speed adopts frequency control, according to productAmount and water content require to regulate, and strainer adopts high strength polyurethane strainer. This filtering equipment has changed biographyPress filtration after sewage cohesion in system meaning, but adopt 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 a kind of belt close phase deep dehydration system and dehydration thereofMethod.
The close phase deep dehydration of a kind of belt system, sludge feeding device and curing agent and promoter adding set divideBe not connected with mixer, mixer is connected with hydration reaction device, hydration reaction device and belt type filter-pressing dehydration plantMachine is connected; Described sludge feeding device is made up of sludge storage bin and mud batcher; Described curing agent and promotionAgent adding set is by curing agent feed bin, curing agent batcher, promoter basin and measuring pump composition, curing agentFeed bin is connected with curing agent batcher by measuring pump separately with promoter basin.
Hydration reaction device is mainly made up of conveyer belt. According to different its length of sludge characteristics decision and wideDegree, plays again the effect that mud is transported to next process simultaneously. Enter after stirring for special mudAfter the hydration reaction stage, can generate heat and produce a part of gas with foreign flavor, hydration reaction system is at this moment set up and is drawnThe system that eliminates the unusual smell is bathed in geomantic omen.
Described band press filter dewatering machine is by strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filterBand rinse-system and strainer drive system form.
Band press filter dewatering machine is to carry sludge blanket secretly by the strainer of upper and lower two tensionings, from a succession of regularS-shaped process in the roll-in cylinder of arranging, relies on the tension force of strainer itself to form squeezing and the shearing to sludge blanketPower, squeezes out the capillary water in sludge blanket, obtains the higher mud cake of solid content, thereby it is de-to realize mudWater.
Strainer requires it to have the features such as higher tensile strength, resistance to complications, acid and alkali-resistance, resistance to variations in temperature,Also should consider the specific nature of mud simultaneously, select applicable braiding texture, have good permeability andThe mud strainer of the interception performance to mud granule.
The deviation system of roll-in cylinder is by pneumatic means automatic deviation correction. The clamping system of strainer, by pneumatic systemControl, strainer tension force general control is at 0.3～0.7MPa, and accepted value is 0.4MPa. Dirt of different natureMud requires differently to belt speed, any specific mud is all existed to a best band speed controlScope processed, within the scope of this, dewatering system can ensure certain disposal ability, can obtain again high-qualityMud 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 fills by mud feedPut and enter mixer, by 5-8 part curing agent and 1-2 part modifier by curing agent and promoter adding setEnter mixer, stir 10min-90min;
(2) material being stirred enters hydration reaction device, reaction 1-15min;
(3) reacted material enters band press filter dewatering machine, the strainer tension force control of band press filter dewatering machineAt 0.3～0.7MPa, by material dewatering, discharging.
Described curing agent is made up of the material of following parts by weight: magnesium salts 20-30 part, and chlorate 10-20 part,Phosphate 30-40 part, dihydroxylic alcohols 10-20 part, alum 1-5 part.
Described magnesium salts is magnesium chloride; Described chlorate is potassium chlorate; Described phosphate is sodium phosphate, di(2-ethylhexyl)phosphateHydrogen sodium, one or more in disodium-hydrogen; Described dihydroxylic alcohols is butanediol, propane diols or hexamethyleneGlycol.
Described modifier is made up of the material of following parts by weight: carboxymethyl cellulose 10-20 part, isocyanic acidEster-cyclodextrin copolymers 5-10 part, styrene-α-methylstyrene-acrylic copolymer 5-10 part, horseThe extract 1-5 of Tang part, purple stem boneset extract 1-5 part.
The extracting method of described lady's-grass extract is: lady's-grass is dried, clay into power, add 5-10 times of weight70% ethanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Eupatorium adenophorum is dried, clay into power, add 5-1070% ethanolic solution refluxing extraction of times weight 3 times, 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, can be byThe water yield be the sludge dewatering of 98-99.8% to water content below 60%, the curing agent adding and promoter, canChange the character of mud, make it be more prone to assemble, facilitate band press filter dewatering machine dehydration, increased dehydrationEfficiency and speed, this system is simple to operate, operating 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.
Detailed description of the invention
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 curing agent and promoter adding set divideBe not connected with mixer, mixer is connected with hydration reaction device, hydration reaction device and belt type filter-pressing dehydration plantMachine is connected; Described sludge feeding device is made up of sludge storage bin and mud batcher; Described curing agent and promotionAgent adding set is by curing agent feed bin, curing agent batcher, promoter basin and measuring pump composition, curing agentFeed bin is connected with curing agent batcher by measuring pump separately with promoter basin.
Described band press filter dewatering machine is by strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filterBand rinse-system and strainer drive system form.
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 by sludge feeding deviceEnter mixer, 5 parts of curing agent and 1 part of modifier are entered to stirring by curing agent and promoter adding setMachine, stirs 10min;
(2) material being stirred enters hydration reaction device, reaction 1min;
(3) reacted material enters band press filter dewatering machine, the strainer tension force control of band press filter dewatering machineAt 0.3MPa, by material dewatering, discharging.
Described curing agent is made up of the material of following parts by weight: 20 parts, magnesium chloride, 10 parts, potassium chlorate, phosphorus30 parts, acid sodium, 10 parts of propane diols, 1 part, alum.
Described modifier is made up of the material of following parts by weight: 10 parts of carboxymethyl celluloses, and isocyanates-5 parts of cyclodextrin copolymers, 5 parts of styrene-α-methylstyrene-acrylic copolymers, lady's-grass extract 1Part, 1 part of purple stem boneset extract.
The extracting method of described lady's-grass extract is: lady's-grass is dried, clay into power, add 70% of 5 times of weightEthanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Eupatorium adenophorum is dried, clay into power, add 5 times70% ethanolic solution refluxing extraction of weight 3 times, merging filtrate, evaporate to dryness is made.
It is 54% mud cake that the method for this embodiment can obtain moisture content.
Embodiment 2
The close phase deep dehydration of a kind of belt system, sludge feeding device and curing agent and promoter adding set divideBe not connected with mixer, mixer is connected with hydration reaction device, hydration reaction device and belt type filter-pressing dehydration plantMachine is connected; Described sludge feeding device is made up of sludge storage bin and mud batcher; Described curing agent and promotionAgent adding set is by curing agent feed bin, curing agent batcher, promoter basin and measuring pump composition, curing agentFeed bin is connected with curing agent batcher by measuring pump separately with promoter basin.
Described band press filter dewatering machine is by strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filterBand rinse-system and strainer drive system form.
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 by sludge feeding deviceEnter mixer, 7 parts of curing agent and 1.5 parts of modifier are entered and stirred by curing agent and promoter adding setMix machine, stir 30min;
(2) material being stirred enters hydration reaction device, reaction 5min;
(3) reacted material enters band press filter dewatering machine, the strainer tension force control of band press filter dewatering machineAt 0.4MPa, by material dewatering, discharging.
Described curing agent is made up of the material of following parts by weight: 25 parts, magnesium chloride, 15 parts, potassium chlorate, phosphorus35 parts, acid dihydride sodium, 15 parts of cyclohexanediols, 3 parts, alum.
Described modifier is made up of the material of following parts by weight: 15 parts of carboxymethyl celluloses, and isocyanates-7 parts of cyclodextrin copolymers, 7 parts of styrene-α-methylstyrene-acrylic copolymers, lady's-grass extract 3Part, 3 parts of purple stem boneset extracts.
The extracting method of described lady's-grass extract is: lady's-grass is dried, clay into power, add 70% of 8 times of weightEthanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Eupatorium adenophorum is dried, clay into power, add 8 times70% ethanolic solution refluxing extraction of weight 3 times, merging filtrate, evaporate to dryness is made.
It is 52% mud cake that the method for this embodiment can obtain moisture content.
Embodiment 3
The close phase deep dehydration of a kind of belt system, sludge feeding device and curing agent and promoter adding set divideBe not connected with mixer, mixer is connected with hydration reaction device, hydration reaction device and belt type filter-pressing dehydration plantMachine is connected; Described sludge feeding device is made up of sludge storage bin and mud batcher; Described curing agent and promotionAgent adding set is by curing agent feed bin, curing agent batcher, promoter basin and measuring pump composition, curing agentFeed bin is connected with curing agent batcher by measuring pump separately with promoter basin.
Described band press filter dewatering machine is by strainer, roll-in cylinder, strainer clamping system, strainer deviation system, filterBand rinse-system and strainer drive system form.
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 by sludge feeding deviceMixer, enters mixer by 8 parts of curing agent and 2 parts of modifier by curing agent and promoter adding set,Stir 80min;
(2) material being stirred enters hydration reaction device, reaction 14min;
(3) reacted material enters band press filter dewatering machine, the strainer tension force control of band press filter dewatering machineAt 0.7MPa, by material dewatering, discharging.
Described curing agent is made up of the material of following parts by weight: 30 parts, magnesium chloride, 20 parts, potassium chlorate, phosphorus40 parts, acid one hydrogen sodium, 20 parts of butanediols, 5 parts, alum.
Described modifier is made up of the material of following parts by weight: 20 parts of carboxymethyl celluloses, and isocyanates-10 parts of cyclodextrin copolymers, 10 parts of styrene-α-methylstyrene-acrylic copolymers, lady's-grass extracts5 parts of things, 5 parts of purple stem boneset extracts.
The extracting method of described lady's-grass extract is: lady's-grass is dried, clay into power, add 10 times of weight70% ethanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
The extracting method of described purple stem boneset extract is: Eupatorium adenophorum is dried, clay into power, add 10 times of weight70% ethanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
It is 49% mud cake that the method for this embodiment can obtain moisture content.
Claims (5)
1. 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 fills by mud feedPut and enter mixer, by 5-8 part curing agent and 1-2 part modifier by curing agent and promoter adding setEnter mixer, stir 10min-90min; Described curing agent is made up of the material of following parts by weight: magnesiumSalt 20-30 part, chlorate 10-20 part, phosphate 30-40 part, dihydroxylic alcohols 10-20 part, alum 1-5 part;
(2) material being stirred enters hydration reaction device, reaction 1-15min;
(3) reacted material enters band press filter dewatering machine, the strainer tension force control of band press filter dewatering machineAt 0.3～0.7MPa, by material dewatering, discharging.
2. a kind of method of deeply dehydrating sludge according to claim 1, is characterized in that described magnesium saltsFor magnesium chloride; Described chlorate is potassium chlorate; Described phosphate is sodium phosphate, sodium dihydrogen phosphate, phosphoric acid oneOne or more in hydrogen sodium; Described dihydroxylic alcohols is butanediol, propane diols or cyclohexanediol.
3. a kind of method of deeply dehydrating sludge according to claim 1, is characterized in that described modificationAgent is made up of the material of following parts by weight: carboxymethyl cellulose 10-20 part, the copolymerization of isocyanates-cyclodextrinThing 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.
4. a kind of method of deeply dehydrating sludge according to claim 3, is characterized in that described lady's-grassThe extracting method of extract is: lady's-grass is dried, clay into power, add 70% ethanolic solution of 5-10 times of weightRefluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
5. a kind of method of deeply dehydrating sludge according to claim 3, is characterized in that described purple stemThe extracting method of Herba Lycopi extract is: Eupatorium adenophorum is dried, clay into power, add 70% of 5-10 times of weightEthanolic solution refluxing extraction 3 times, merging filtrate, evaporate to dryness is made.
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| CN104472221B (en) * | 2014-12-22 | 2017-06-16 | 四川藏宝虫草生物科技有限公司 | A kind of method by natural cordyceps fructification fermented hypha |
| 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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| CN102267795A (en) * | 2011-06-17 | 2011-12-07 | 中国科学院武汉岩土力学研究所 | Dewatered sludge drying method of wastewater treatment plant |
| CN103102054A (en) * | 2011-11-14 | 2013-05-15 | 靖江市中大环境工程有限公司 | Rapid mechanical type sludge dewatering system |
| CN202460271U (en) * | 2012-01-19 | 2012-10-03 | 徐州明光环境设备有限公司 | Belt type pressure filter |
| CN103641290A (en) * | 2013-12-09 | 2014-03-19 | 天津工业大学 | Sludge dewatering concentration and consolidation treatment method |
| CN203890211U (en) * | 2014-06-18 | 2014-10-22 | 江苏康泰环保设备有限公司 | Belt-type dense-phase deep dehydration 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. |