CN101486209A - Hydrophyte extrusion dehydration method and apparatus - Google Patents
Hydrophyte extrusion dehydration method and apparatus Download PDFInfo
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- CN101486209A CN101486209A CNA200910024786XA CN200910024786A CN101486209A CN 101486209 A CN101486209 A CN 101486209A CN A200910024786X A CNA200910024786X A CN A200910024786XA CN 200910024786 A CN200910024786 A CN 200910024786A CN 101486209 A CN101486209 A CN 101486209A
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Abstract
The invention relates to a method and equipment for squeezing and dehydrating aquatic plants, and belongs to the field of environmental protection. A plant getting out from water is cut and smashed by a chain type pulverizer increased with two layers of cutters, is poured into an acidification tank, is subjected to acidification treatment, is pumped to a spiral type solid-liquid separator with a squeezing and dehydration part elongated by 1/3 to 1/2 and is squeezed and dehydrated. The technology uses the improved chain type pulverizer to cut and smash materials and improves the acidification speed and dehydrating efficiency; through the acidification treatment, the technology reduces the water-holding capacity of the materials, increases the fluidity of the materials, and is favorable for feeding and dehydration of the solid-liquid separator; and through the extension of the retention time of the materials in the solid-liquid separator, the technology increases water outlet amount and improves effect of solid-liquid separation. Hyacinth with water content of 94.5 percent is subjected to the solid-liquid separation to obtain residue with the water content of about 78.4 percent; and the reclaiming rate of a hyacinth dry substance is more than 65 percent, and the dehydration rate is 78.9 percent.
Description
Technical field
The present invention relates to a kind of method and apparatus of hydrophyte extrusion dehydration, is a kind of key technology based on the residual body recycling of water pollution rehabilitation plant, belongs to field of environment protection.
Background technology
Be subjected to the influence of discharging of industrial wastewater and sanitary sewage and widespread pollution from the overuse of fertilizers and pesticides in rural area, the eutrophication of water body increases the weight of day by day, the body eutrophication important symbol is N in the water body, P content severe overweight, but simultaneously, if nutrients such as nitrogen, phosphorus are used, to be huge nutrient resources bank, also can play the purpose that purifies water simultaneously.Water plant is a primary productivity important in the Freshwater ecosystems, in recent years, utilize absorption, degraded or the fixation of water plant to nitrogen, phosphorus composition, realization is to the enrichment of polluted-water nitrogen phosphorus, play water body purification simultaneously and repair purpose, have small investment, risk little, do not produce advantage such as secondary pollution.By reasonably selecting, gathering in the crops water plant, can also increase income simultaneously, therefore, be subjected to domestic and international researcher's extensive concern.
Wan Zhigang (2004) studies show that the effect comparative test that 10 kinds of aquatic vascular plants absorb water body nitrogen, phosphorus, water hyacinth is the strongest to the absorbability of TN in the water body, TN in one month in the test water body drops to 1.05mg/L from 6.21mg/L, be absorbed 5.16mg/L, absorptivity is 83.09%, secondly is that the water spinach absorptivity is 77.97%, ring yew absorptivity is 73.10%, the eel grass absorptivity is 65.86%, and the hornwort absorptivity is 62.80%, and the absorptivity of duckweed is 58.17%; The water peanut absorptivity is 54.27%; The frogbit absorptivity is 50.24%; The duckweed spirodela absorptivity is 48.63%; The Salvinia natans absorptivity is 44.94%.Lin Dongjiao (2004) has tested floating cultivation water spinach and water hyacinth to wastewater purifying efficiency, shows that 2 kinds of plants can both absorb N, the P element in the water body in large quantities, and it is vigorous to grow, and clean-up effect is remarkable; The clearance water spinach of total nitrogen is respectively 94.47%, 60.19%, 31.88% in the sewage in 3 stages of test; Water hyacinth is respectively 94.24%, 68.65%, 55.87%; Total tp removal rate water spinach is respectively 28.57%, 33.9%, 14.39%; Water hyacinth is respectively 66.52%, 53.34%, 35.67%; CODCr clearance water spinach is respectively 56.4%, 24.24%, 29.33%; Water hyacinth is respectively 47.87%, 24.02%, 46.75%. water spinach, water hyacinth are significantly higher than contrast to the removal effect of N, P, COD, reach 41400 kilograms of ton/mus according to research such as Yuan Cong Yi (1983) at the year increment fresh weight of TAI HU AREA water hyacinth, give money as a gift 3145 kilograms/mu of materials, N, P uptake are respectively 49.3 and 8.5 kilograms/mu.(1995) are calculated in research such as Dou Hongshen, the Pu training people etc., 1 hectare of water hyacinth of the every plantation of the big water surface in Taihu Lake, between 7～August every day the 5～7t that can increase weight approximately, the corresponding about 8～11kg of nitrogen, the phosphorus 1.3～1.8kg that can draw respectively in the water body.As seen, adopt the method for phytoremediation, can realize the water pollution reparation preferably.
Yet, if the plant residue after the plant that is used for the water body reparation in time can not being salvaged disembarkation or salvaging disembarkation can not be handled timely and effectively, can't really realize reparation to water pollution, even the secondary pollution that also can produce because of plant residue, and all that has been achieved is spoiled.
To the recycling based on the residual body of water body rehabilitation plant is the effective way of phytoremediation polluted-water, yet, because the water plant water content that is used for the polluted-water reparation is generally all more than 90%, even up to more than 95%, if do not carry out processed, not only increased cost of transportation, bring difficulty also for the subsequent treatment of plant residue, therefore, to hydrophyte extrusion dehydration be the key of plant residue recycling.
Publication number is the patent of CN101235966, proposes earlier the water hyacinth of newly gathering to be carried out heat and floats, and enters centrifuge dewatering subsequently, enters the squeezer dehydration then, when the moisture content of the water hyacinth behind the press dewatering≤40%, directly sends into the incinerator burning; When moisture content〉40% the time, be introduced into drying machine and carry out drying, make the moisture content of dried water hyacinth 25%～40%, and then send in the incinerator and burn.
Publication number is the patent of CN1806493,---making beating---dehydration---batching---pre-fermentation---finished product pack that propose a kind of method of utilizing water hyacinth to prepare mushroom class culture medium, this invention is that raw material prepares mushroom class culture medium by following technology with the water hyacinth: gather.
The patent of publication number CN1439775, propose waterborne moveable and handle the device of water hyacinth, this device comprises installation salvaging machinery, squeezing dehydration device and water cleaning pool aboard ship, water cleaning pool is separated into intake pool and the discharge bay that the bottom communicates by the dividing plate that is located in the pond, in intake pool and discharge bay, be full of grit respectively, its surface is placed with the water pipe of tube wall belt hole respectively, and is implanted with deep-rooted plant.
The extrusion dehydration of water hyacinth is all mentioned in above patented invention, but the degree of dehydration that does not all propose dewatering efficiency and can reach, existing press type, strip-type and solid-liquid separating machine such as spiral all can be used for the extrusion dehydration of water plant, but degree of dehydration hangs down and is difficult to reach the desired water content of subsequent treatment, perhaps dewatering efficiency is low, can not work continuously.
Summary of the invention
Technical problem
The objective of the invention is to: existing plate and frame, strip-type and solid-liquid separating machine such as spiral are difficult to dewater to subsequent treatment desired 80% following water content with the water plant of high-moisture or based on the residual body of water pollution rehabilitation plant, adopt the press type solid-liquid separating machine, cause can't be carried out continuous feed, and solid-liquid separation efficiency is reduced.Therefore, the present invention proposes a kind of method and apparatus that is specifically designed to the hydrophyte extrusion dehydration of high-moisture.
Technical scheme
The object of the present invention is achieved like this: a kind of method of hydrophyte extrusion dehydration, it is characterized in that: with the water plant of salvaging, elder generation is through being fixed on the cutting knife chopping on pulverizer upper strata after entering pulverizer, chain through being fixed on pulverizer lower floor is further broken and batter down again, pour acidification pool then into, through 2-5 days acidification, after the pH value of material is reduced to 5.0, pumps into extrusion dehydration is partly extended 1/3～1/2, simultaneously former motor power strengthened 1/3 solid-liquid separating machine and carry out extrusion dehydration.Described water plant is based on the plant that the water pollution reparation is planted or put in a suitable place to breed, as: Chinese celery after water hyacinth, water lettuce, duckweed, the harvesting or swamp cabbage.
The equipment of above-mentioned hydrophyte extrusion dehydration method, it is characterized in that: on existing chain-type pulverizer basis, 5-10 centimeters above the chain fixed axis increases by 2 layers of cutting knife, and cutting knife is a rectangle, long limit is the edge of a knife, and all there is the edge of a knife on both sides, and the cutting knife plane is 90 degree with axle, and every layer of cutting knife is made up of two cuttves, two cuttves are fixed on a both sides, are 180 degree; Two-layer cutting knife is 90 degree to be arranged, and cutting knife surplus formula method is fixed on the axle, and the water plant material enters behind the pulverizer earlier through the cutting knife chopping, further broken and batter down through chain again.
The equipment of above-mentioned hydrophyte extrusion dehydration method is characterized in that: on original XY type livestock and poultry solid-liquid separating machine basis, extrusion dehydration is partly extended 1/3～1/2, simultaneously former motor power is strengthened 1/3 and carry out extrusion dehydration.
The equipment of above-mentioned hydrophyte extrusion dehydration method is characterized in that: constitute acidification pool by three cement pits, all have a gate to communicate between three ponds, and deepen 50 centimeters successively.
Beneficial effect
The invention has the advantages that: the chain-type pulverizer of the residual body of water plant after improving that will salvage disembarkation shreds and batters down, being convenient in the plant residue tissue nutrient flows out external, quicken the rate of producing acid of plant residue in acidification pool, also help simultaneously follow-up extrusion dehydration, to carry out self-souring through chopping and the plant residue that batters down, the plant residue histocyte is broken, discharge ICW, simultaneously, also can reduce the material moisture holding capacity, improve follow-up extrusion dehydration effect and efficient, will have the screw type solid-liquid separating machine extrusion dehydration now and partly extend, and the power of increase equipment, can under the prerequisite that does not reduce the equipment solid-liquid separation efficiency, delay the discharging time of plant residue, prolong the time that material is in squeezed state, increase squeezes out the water yield, thereby reaches the purpose that improves dehydration rate.
Technology indicators of overall performance of the present invention is with the advantage of similar technology comparison: its chain-type pulverizer after improving shreds and batters down, acidifying speed and dewatering efficiency have been improved, pass through acidification, reduced the material moisture holding capacity, increased the flowability of material, help solid-liquid separating machine charging and dehydration, by will have now livestock and poultry excrement solid-liquid seperator screw extrusion partly extend 1/3-1/2, increase motor power simultaneously, prolong the holdup time of material in solid-liquid separating machine, increase water yield, improved solid-liquid separation effect.Water content is after 94.5% water hyacinth separates, obtain water content and be about 78.4% slag, the water hyacinth dry rate of recovery (is meant after Separation of Solid and Liquid greater than 65%, the solid content that enters solid portion accounts for the percentage of solid content before the Separation of Solid and Liquid), dehydration rate is 78.9% (being meant that moisture in the material has 78.9% water to be sloughed).
Description of drawings
Fig. 1: the chain-type mill structure figure that increases by 2 layers of cutting knife
The 1-motor; The 2-charging aperture; The 3-cutting knife; The 4-chain; The 5-fixed axis
Fig. 2: acidification pool structure chart
1-one-level acidification pool; 2-two-stage acidulation pond; 3-charging pond; The 4-feed pipe; The 5-gate;
Fig. 3: the solid-liquid separating machine structure chart of improvement
The 1-briquetting; 2-squeezes out the mouth of a river; The 3-slag notch; Between the 4-extruding; The 5-charging aperture;
The 6-bearing that links; The 7-base support; The 8-resistance arm; The 9-motor
The specific embodiment
Follow-on chain-type pulverizer (seeing accompanying drawing 1 for details): on existing chain-type pulverizer (HDP) basis, 5-10 centimeters above chain fixed axis 5, fixing two-layer cutting knife 3, cutting knife is a rectangle, and long limit is the edge of a knife, and all there is the edge of a knife on both sides, the cutting knife plane is 90 degree with axle, every layer of cutting knife is made up of two cuttves, and two cuttves are fixed on a both sides, is 180 degree; Two-layer cutting knife is 90 degree to be arranged, and the length of cutter is less than radius 2-3 centimetre of the pulverizer cylinder, and cutting knife is fixed on the axle with surplus formula method, and the water plant material enters behind the pulverizer earlier through the cutting knife chopping, further broken and batter down through chain again.
Constitute acidification pool (seeing accompanying drawing 2 for details) by three cement pits, all there is a gate to communicate between three ponds, and deepen 50 centimeters successively, dark 0.8 meter of first pond, dark 1.3 meters of second pond, dark 1.8 meters of the 3rd pond can guarantee that the 1st pond material can flow freely in the 2nd pond, and the 2nd mediocre person expects can flow freely in the 3rd pond.Described acidifying be meant enter acidification pool material under field conditions (factors), the acid-producing microorganisms effect (this is a general knowledge) that in material, exists naturally, the material souring, through 2-5 days, the pH value of material was reduced to about 5.0 and gets final product.
Follow-on solid-liquid separating machine (seeing accompanying drawing 3 for details): on original livestock and poultry excrement solid-liquid seperator (XY type) screw extrusion part basis,, simultaneously former motor 9 powers are strengthened 1/3 and be used for extrusion dehydration with i.e. 4 lengthenings 1/3～1/2 between extruding of extrusion dehydration part.
Embodiment 1
Salvaging is used for the water hyacinth of water purification eutrophic water body, water content is 94.5%, shred and batter down with follow-on chain-type pulverizer, pour acidification pool into, self-souring 2 days (acidifying be meant enter acidification pool material under field conditions (factors), the acid-producing microorganisms effect that in material, exists naturally, this is a general knowledge), acidification pool water hyacinth juice drops to 5.5 by original pH7.2, then, adopt modified solid-liquid separating machine self priming pump, the water hyacinth juice is pumped into solid-liquid separating machine carry out Separation of Solid and Liquid, after the separation, obtain water content and be about 78.4% water hyacinth slag, the water hyacinth dry rate of recovery is greater than 65%, and dehydration rate is 78.9%, and the power consumption of Separation of Solid and Liquid per ton institute is the 6-8 degree.
Embodiment 2
Salvaging is used to purify the water lettuce of eutrophic water body, water content is 92.5%, shred and batter down with follow-on chain-type pulverizer, pour acidification pool (Fig. 2) into, acidifying 2 days, acidification pool water lettuce juice drops to 5.5 by original pH7.2, then, adopt the modified solid-liquid separating machine to carry pump, the water lettuce juice is pumped into solid-liquid separating machine carry out Separation of Solid and Liquid, after the separation, obtain water content and be about 78.4% water lettuce slag, the water lettuce dry rate of recovery is greater than 65%, and dehydration rate is 78.9%, and the power consumption of Separation of Solid and Liquid per ton institute is the 6-8 degree.
Claims (6)
1, a kind of method of hydrophyte extrusion dehydration, it is characterized in that: with the water plant of salvaging, elder generation is through being fixed on the cutting knife chopping on pulverizer upper strata after entering pulverizer, chain through being fixed on pulverizer lower floor is further broken and batter down again, pour acidification pool then into, through 2-5 days acidification, after the pH value of material is reduced to 5.0, pumps into extrusion dehydration is partly extended 1/3～1/2, simultaneously former motor power strengthened 1/3 screw type solid-liquid separating machine and carry out extrusion dehydration.
2, according to the method for the described a kind of hydrophyte extrusion dehydration of claim 1, it is characterized in that: described water plant is based on the plant that the water pollution reparation is planted or put in a suitable place to breed, as: Chinese celery after water hyacinth, water lettuce, duckweed, the harvesting or swamp cabbage.
3, the equipment that is used for claim 1 or 2 described hydrophyte extrusion dehydration methods, it is characterized in that: on existing chain-type pulverizer basis, above fixing chain shaft, increase by 2 layers of cutting knife, cutting knife is fixed on the axle, the water plant material enters behind the pulverizer earlier through the cutting knife chopping, and is further broken and batter down through chain again.
4, according to the equipment of the described hydrophyte extrusion dehydration method of claim 3, it is characterized in that: chain fixed axis top 5-10 centimeters increases by 2 layers of cutting knife, cutting knife is a rectangle, long limit is the edge of a knife, and all there is the edge of a knife on both sides, and the cutting knife plane is 90 degree with axle, and every layer of cutting knife is made up of two cuttves, two cuttves are fixed on a both sides, are 180 degree; Two-layer cutting knife is 90 degree to be arranged, and cutting knife surplus formula method is fixed on the axle.
5, be used for the equipment of right 1 or 2 described hydrophyte extrusion dehydration methods, it is characterized in that: on original XY type livestock and poultry solid-liquid separating machine basis, extrusion dehydration is partly extended 1/3～1/2, simultaneously former motor power is strengthened 1/3 and carry out extrusion dehydration.
6, be used for the equipment of claim 1 or 2 described hydrophyte extrusion dehydration methods, it is characterized in that: constitute acidification pool by three cement pits, all have a gate to communicate between three ponds, and deepen 50 centimeters successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910024786XA CN101486209A (en) | 2009-02-13 | 2009-02-13 | Hydrophyte extrusion dehydration method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910024786XA CN101486209A (en) | 2009-02-13 | 2009-02-13 | Hydrophyte extrusion dehydration method and apparatus |
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| CN101486209A true CN101486209A (en) | 2009-07-22 |
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| CNA200910024786XA Pending CN101486209A (en) | 2009-02-13 | 2009-02-13 | Hydrophyte extrusion dehydration method and apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909213A (en) * | 2012-10-25 | 2013-02-06 | 江苏省农业科学院 | Device for treating aquatic plants in real time and application of device |
| CN109650950A (en) * | 2019-01-29 | 2019-04-19 | 环创(厦门）科技股份有限公司 | The recycling treatment process of water hyacinth |
-
2009
- 2009-02-13 CN CNA200910024786XA patent/CN101486209A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102909213A (en) * | 2012-10-25 | 2013-02-06 | 江苏省农业科学院 | Device for treating aquatic plants in real time and application of device |
| CN109650950A (en) * | 2019-01-29 | 2019-04-19 | 环创(厦门）科技股份有限公司 | The recycling treatment process of water hyacinth |
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Open date: 20090722 |