CN103265101B - Forming flocculating agent capable of controlling dissolving rate according to water flow speed - Google Patents
Forming flocculating agent capable of controlling dissolving rate according to water flow speed Download PDFInfo
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- CN103265101B CN103265101B CN201310172740.9A CN201310172740A CN103265101B CN 103265101 B CN103265101 B CN 103265101B CN 201310172740 A CN201310172740 A CN 201310172740A CN 103265101 B CN103265101 B CN 103265101B
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Abstract
The invention discloses a forming flocculating agent capable of controlling the dissolving rate according to the water flow speed. The flocculating agent is of a flat cylinder shape, and the diameter/height ratio is 10:1, and is formed through bonding and compressing gelatinized starch. The forming flocculating agent is flatly installed in a plastic screen frame, and is inserted into a water inlet of a water treatment system vertically relative to the water flow direction, so as to reach the aim of adding water treatment agents uniformly. The forming flocculating agent capable of controlling the dissolving rate according to the water flow speed provided by the invention changes the chemical agent adding mode of the water treatment system; a flocculating dissolving tank and a metering pump are not used any more; and the forming flocculating agent has an irreplaceable effect for a mobile water treatment system or a water treatment system with a small installation space.
Description
Technical field
The present invention relates to a kind of water treatment flocculant, relate in particular to directly the flocculation agent that adds, controls dissolution rate by flow velocity.
Background technology
Chemical agent coagulating sedimentation is the method that purification of water quality is generally used.Usually, all there is the problem that flocculation agent quantitatively adds in the water treatment system of coagulating sedimentation.Commercially available flocculation agent is mostly Powdered at present, also has coating to make grade granular (Chinese patent 200810022487.8 slow release composite flocculants).When these dry powder or granular flocculation agent are used all with throwing device, with the dosing pump of quantifier.Due to dry powder flocculating agent when the dosing pump with the rubbing effect of dosing pump or quantimeter tube wall, use can make mechanical throwing device wearing and tearing continuously, easily causes and adds the inaccurate even whole device damage of metering.Wearing and tearing for fear of dry powder flocculating agent to dosing pump, some water treatment systems are dissolved into solution flocculation agent, then with volume pump, flocculant solution are pumped into pending water body.Such water treatment system must increase the dissolving tank with stirring rake.Although this can extend the life-span of dosing pump, construction scale and the investment of water treatment system have also been increased.
Summary of the invention
The object of this invention is to provide a kind of moulding flocculation agent that relies on flow velocity to control dissolution rate.Use this flocculation agent can save dosing pump, or save dissolving tank and volume pump, simplified water treatment system construction, saved investment.This is even more important to water treatment system movably.Its gordian technique comprises:
This moulding flocculation agent is in the flocculation agent raw material preparing, to add binding agent, and the weight ratio of flocculation agent raw material and binding agent is 2-3:1, within after stirring tanning 5-10 minute, can add former compression moulding.
The raw material of described flocculation agent can be from aluminium salt Tai-Ace S 150, polyaluminium sulfate, aluminum chloride, polymerize aluminum chloride; Ferric sulfate in molysite or ferrous sulfate, and choose in aluminium iron polychloride; The water quality condition that its preparation is processed according to wish is definite, or utilizes the flocculation agent raw material of one-component, or several flocculation agent raw material compound, preparation composite flocculation agent raw material.
Described binding agent is the glutinous rice starch of gelatinization, and the weight ratio of glutinous rice starch and water is 1:8-10, gelatinization point 80-100 ℃, gelatinization time 10-15 minute.
Diameter/the height of described former, than being 10/1, designs six altogether, and former diameter is respectively 5,6,7,8,9 and 10 centimetres, and corresponding height is 0.5,0.6,0.7,0.8,0.9 and 1.0 centimetre.
The pressure of described former compacting can be chosen between 0.5-1.0 MPa, and when diameter, height are respectively 5 centimetres and 0.5 centimetre, pressure is 0.5 MPa, by that analogy; After machine-shaping, be oblate cylindricality, totally six kinds of size models, the moulding flocculation agent of different size can be used for the water treatment system of various flows water state.
The flocculation agent of described compression moulding can paperback in nylon screen frame, screen frame is directly inserted in the sewage inlet place of water treatment system, the effect of using current is dissolved flocculation agent uniformly, reaches the object that evenly adds flocculation agent.
Described screen frame is vertical with water (flow) direction, observes flco formational situation and regulates water inlet flow velocity, controls the dosage of dispensing.
Principle of the present invention is to utilize the hydromechanics effect of water treatment system water inlet that moulding flocculation agent is dissolved, by the adjustings dosage that the speed control of current offers medicine of intaking.Flow velocity is larger, and flocculation agent dissolves faster, and dispensing dosage is larger.
Feature of the present invention is to utilize the effect of water inlet self that flocculation agent is dissolved and the effect that do not need additional mechanical force, has simplified the dosing mode of water treatment system, saves dissolving tank, stirring rake and volume pump, has not only saved investment, and has saved space.For some movable types or the narrow and small water treatment system of installing space, there is irreplaceable effect.
Accompanying drawing explanation
Fig. 1 is in laminar flow, oblate cylindricality flocculation agent and current (flow velocity and density) interaction Computer analogue diaram.
Fig. 2 is that moulding flocculation agent is denitrogenated the Simple water treatment system schematic diagram of dephosphorization for eutrophication water.
Fig. 3 is the application of moulding flocculation agent on the poly-moving-out device of Chaohu nitrogen phosphorus algae magnetic.
Concrete case study on implementation
Embodiment 1
By weight 2:1, by the glutinous rice starch of aluminium iron polychloride and gelatinization, (weight ratio of glutinous rice starch and water is 1:10,90 ℃ of gelatinization points, gelatinization time 15 minutes) stir, tanning can add former compression moulding in 8 minutes, former diameter is 5.0 centimetres, height is 0.5 centimetre, and pressure is 0.5 MPa;
Get a formation of lots flocculation agent, heavy 14g(moisture 30%), be placed in 6 centimetres of tanks of cross section 6 cm x 6 centimetres of the depth of waters, flow velocity 0.2 meter per second.Each 5 minutes in downstream 10 centimeters get isopyknic aqueous solution.Dry, detect residual weight.Owing to connecing tap water in tank, disregard tap water residual, visual residue is flocculation agent.Test result is as shown in table 1:
Table 1, moulding flocculation agent dissolution rate
| Time (Min.) | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 |
| Concentration (mg/L) | 150 | 152 | 153 | 151 | 152 | 150 | 149 | 151 | 149 | 150 | 148 | 146 | 125 | 26 |
From table 1, under above-mentioned test conditions, the dissolution rate of moulding flocculation agent in 1 hour differs less than 2%.In water treatment system, this rangeability of dosage can be thought uniformly.
Regulate water inlet flow velocity.When flow velocity is increased to 0.4 meter per second, the moulding flocculation agent of 5.0 cm diameters, 0.5 cm thick dissolves complete after 25 minutes.
Embodiment 2
In one 100 meters * 25 meters discarded swimming pools that have a blue algae growth, take an easy water treatment system (Fig. 2).Long 1.2 meters of pvc pipe, one end is by lift pump (5.0m
3/ hr.) sewage is pumped into pipeline, from the threeway of water-in 20 centimeters, place the moulding flocculation agent of two embodiment, 1 preparation.The other end wrapping is with plastic wire (100 order), and approaching plastic wire place is dry point, detects the flocculating effect of moulding flocculation agent, and result is as shown in table 2.
Table 2, moulding About Flocculating Effect of Flocculant (former water---total nitrogen: 3.760mg/L, total phosphorus: 0.255mg/L)
| Detection time (Min.) | 20 | 40 | 60 |
| Water outlet total nitrogen (mg/L)/clearance % | 1.704/54.7% | 1.684/55.2% | 1.716/54.4% |
| Water outlet total phosphorus (mg/L)/clearance % | 0.034/86.7% | 0.030/88.2% | 0.037/85.5% |
From table 2, moulding flocculation agent application performance in Simple water treatment system is stable, respond well.
Embodiment 3
The patent " lake eutrophication material shifts out method and apparatus " of patent special messenger's invention of the present invention is (200710190366.X) to utilize the flocculation agent with magnetic kind by the magnetic field of particular design, to shift out online the moveable platform waterborne of nitrogen phosphorus algae, and while moving in Chaohu, processing algae water per hour is 500 cubes.This platform has the flocculation agent dissolving tank 2 of two 1.5 cubes.Flocculation agent adds dissolving tank to stir, and by volume pump 1, is added to water-in and algae water coagulation.Each dissolving tank flocculant solution (1 cube) can be for 45 minutes, and two dissolving tank rotations are used.Because flocculation agent contains magnetic kind, volume pump is used and damaged less than one week.After this, dosage is controlled by operator's sense organ.
According to principle of the present invention and flocculation agent forming technique, in polymerize aluminum chloride raw material, add 30%(weight ratio) magnetic kind, utilize after sticky rice flour gelatinization as binding agent, be processed into 10 centimetres of diameters, the moulding flocculation agent of thick 1.0 centimetres, with (5 every of eight moulding flocculation agents of plastics screen frame paperback, see Fig. 3), aim at eight water inlet conduits (every conduit pushes away water by submersible pump from Chaohu respectively and enters).
Moulding flocculation agent of the present invention and dosing method, make coagulation abundant, and flco physically well develops.After Check processing, flow into the water in Chaohu, total nitrogen and total phosphorus cut down respectively 74% and 94.5%, than former flocculant concentration mode, improve 5 percentage points, and flocculation agent consumption minimizing 20%, from 40mh/L, drop to 32mg/L.
Claims (4)
1. a moulding flocculation agent of being controlled dissolution rate by flow velocity, it is characterized in that, this moulding flocculation agent is in the flocculation agent raw material preparing, to add binding agent, and the weight ratio of flocculation agent raw material and binding agent is 2-3:1, within after stirring tanning 5-10 minute, adds former compression moulding;
Described binding agent is the glutinous rice starch of gelatinization, and the weight ratio of glutinous rice starch and water is 1:8-10, gelatinization point 80-100 ℃, gelatinization time 10-15 minute;
Diameter/the height of described former, than being 10/1, designs six altogether, and former diameter is respectively 5,6,7,8,9 and 10 centimetres, and corresponding height is 0.5,0.6,0.7,0.8,0.9 and 1.0 centimetre;
The pressure of described former compacting is chosen between 0.5-1.0 MPa, and when diameter, height are respectively 5 centimetres and 0.5 centimetre, pressure is 0.5 MPa, by that analogy; After machine-shaping, be oblate cylindricality, totally six kinds of size models, the moulding flocculation agent of different size is for the water treatment system of various flows water state.
2. the moulding flocculation agent of being controlled dissolution rate by flow velocity according to claim 1, is characterized in that Tai-Ace S 150, the polyaluminium sulfate of the raw material of described flocculation agent from aluminium salt, aluminum chloride, polymerize aluminum chloride; Ferric sulfate in molysite or ferrous sulfate, and choose in aluminium iron polychloride; The water quality condition that its preparation is processed according to wish is definite, or utilizes the flocculation agent raw material of one-component, or several flocculation agent raw material compound, preparation composite flocculation agent raw material.
3. the moulding flocculation agent of being controlled dissolution rate by flow velocity according to claim 1, it is characterized in that, the flocculation agent paperback of described compression moulding is in nylon screen frame, screen frame is directly inserted in the sewage inlet place of water treatment system, the effect of using current is dissolved flocculation agent uniformly, reaches the object that evenly adds flocculation agent.
4. the moulding flocculation agent of being controlled dissolution rate by flow velocity according to claim 3, is characterized in that, described screen frame is vertical with water (flow) direction, observes flco formational situation and regulates water inlet flow velocity, controls the dosage of dispensing.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984845A (en) * | 2004-07-19 | 2007-06-20 | 幽若泰博公司 | Double-layered compacted solid water-purification product |
| JP2008238131A (en) * | 2007-03-29 | 2008-10-09 | Tateho Chem Ind Co Ltd | Water cleaning agent |
| CN101327978A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Slow release composite flocculant |
| CN101327977A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Water treatment composite flocculant |
| TW201038513A (en) * | 2009-04-06 | 2010-11-01 | Antimicrobial Specialists & Associates Inc | Slow release tablet composition for treating industrial water systems |
| CN101928069A (en) * | 2009-06-19 | 2010-12-29 | 深圳市意可曼生物科技有限公司 | Sewage purifier and sewage purification method |
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2013
- 2013-05-10 CN CN201310172740.9A patent/CN103265101B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1984845A (en) * | 2004-07-19 | 2007-06-20 | 幽若泰博公司 | Double-layered compacted solid water-purification product |
| JP2008238131A (en) * | 2007-03-29 | 2008-10-09 | Tateho Chem Ind Co Ltd | Water cleaning agent |
| CN101327978A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Slow release composite flocculant |
| CN101327977A (en) * | 2008-07-15 | 2008-12-24 | 南通立源水处理技术有限公司 | Water treatment composite flocculant |
| TW201038513A (en) * | 2009-04-06 | 2010-11-01 | Antimicrobial Specialists & Associates Inc | Slow release tablet composition for treating industrial water systems |
| CN101928069A (en) * | 2009-06-19 | 2010-12-29 | 深圳市意可曼生物科技有限公司 | Sewage purifier and sewage purification method |
Non-Patent Citations (4)
| Title |
|---|
| 以缓释肥的形式回收污泥溶解液中磷的研究;王涌等;《环境工程》;20110822;第29卷(第4期);第57-60页 * |
| 张丽萍.混凝.《精细化学品生产技术》.石油工业出版社,2011,第64页混凝. * |
| 江南大学等.各种淀粉的糊化温度和温度-粘度变化.《棉织手册（第三版）》.中国纺织出版社,2006,第257页表2-3-7. * |
| 王涌等.以缓释肥的形式回收污泥溶解液中磷的研究.《环境工程》.2011,第29卷(第4期),第57-60页. |
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