CN101565225B - Method and device capable of promoting rapid agglomeration and settlement of suspended alga in water - Google Patents
Method and device capable of promoting rapid agglomeration and settlement of suspended alga in water Download PDFInfo
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- CN101565225B CN101565225B CN2009100524701A CN200910052470A CN101565225B CN 101565225 B CN101565225 B CN 101565225B CN 2009100524701 A CN2009100524701 A CN 2009100524701A CN 200910052470 A CN200910052470 A CN 200910052470A CN 101565225 B CN101565225 B CN 101565225B
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Abstract
本发明涉及一种促使水体中悬浮藻类快速凝聚沉降的方法及装置，采用悬浮取水装置收集富营养化污染水域的富含藻类营养细胞的源水，经泵输送到增压聚藻设备中，进入增压聚藻设备的源水在增压设备内停留后经排水管流出，而凝聚沉降下的藻细胞截留在聚藻泥斗内经排泥管输出。对富营养化水体中浮游藻类固有的气囊结构，通过将富含藻的水体引入到增压设备后，对其进行增压操作并维持一定的时间，使藻体气囊结构在压力作用下收缩并由此产生聚沉，实现浮游藻类与水体的分离，伴随藻体的去除而移除相应量的营养盐，以此达到抑制富营养化水体内水华藻暴发的目的。
The invention relates to a method and device for prompting the rapid coagulation and settlement of suspended algae in a water body. The source water rich in algae vegetative cells in the eutrophication polluted water area is collected by a suspension water intake device, and is transported to a pressurized algae gathering equipment by a pump. The source water of the pressurized algae gathering equipment stays in the pressurized equipment and flows out through the drain pipe, while the algae cells under coagulation and settlement are trapped in the algae gathering mud bucket and output through the mud discharge pipe. For the inherent air sac structure of phytoplankton algae in eutrophic water, after introducing the water body rich in algae into the pressurization equipment, pressurize it and maintain it for a certain period of time, so that the air sac structure of the algae shrinks under pressure and As a result, coagulation occurs to separate the planktonic algae from the water body, and the corresponding amount of nutrient salt is removed with the removal of the algae body, so as to achieve the purpose of inhibiting the outbreak of algal blooms in the eutrophic water body.
Description
Technical field
What the present invention relates to is a kind of method and device thereof of water-treatment technology field, is specifically related to a kind of method and device thereof that impels the quick flocking settling of suspension algae in the water body.
Background technology
In the last few years, natural water body is because to be received the holophytic nutrition salt such as nitrogen phosphorus of accumulation sharply soaring, cause harmful algae wherein to continue to break out, severe exacerbation the aquatic ecological environment, view, ecology, the fishery of water body have been influenced, drinking water safety even is as occurring in the Taihu Lake blue-green algae incident of Wuxi in May, 2007.In view of the serious restriction of river lake water environmental degradation and eutrophication pollution problem to society and sustainable economic development, many researchists have carried out deep research to the water bloom pollution of eutrophic water, also dropped into great amount of manpower and material resources, it is unsatisfactory so to produce effects.For this reason, efficient, safe, the energy-conservation eutrophication pollution control techniques of research and development is to solve the important channel that the current body eutrophication of China pollutes.
Water bloom pollution is except that environmental factorss such as weather, and most important reason is the accumulation of holophytic nutrition salt such as nitrogen phosphorus.For the natural water body of getting dirty for a long time, even the hyper-proliferative of wawter bloom algae takes place the nutritive salt of accumulating in still may be because of water body after carrying out point source to cut dirt.In the water bloom pollution control techniques of current employing, traditional chemical method removes the removal that algae not only is helpless to nutritive salt in the water body, and can introduce other chemical reagent in water body, increases the pollution of water body; Methods such as the mechanical removal in the physical method, filtration then exist except that the algae effect relatively poor, and are difficult to mass-producing running; Though biological process can reduce floating algae by throwing in weed eater, its effect is poorer, may cause disadvantageous effect to the species diversity of this water body even.Therefore, how cutting down the wawter bloom algae quantity in the eutrophic water and realize removing of the interior nutritive salt of eutrophic water, is the main points that current body eutrophication pollutes control.
Through the literature search of prior art is found, Chinese application number is that 200510101092.3 patent " is utilized the method for algae purification landscape water ", propose with the air supporting method except that algae to reach the purpose that removes nutritive salt in the water body, need in former water, add coagulating agent.And the patent No. is 00124828.6 patent " a kind of ship-type air float algae-removing device and method " and application number is that " to prevent the water-algae self-circulation station of algal bloom and body eutrophication " same proposes to adopt the air supporting method to remove planktonic algae in the algae for 200710065795.4 patent, but need in former water, add flocculation agent equally, be easy to generate secondary pollution, and all need pressure air-dissolving, energy consumption is bigger.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of method and device thereof that impels the quick flocking settling of suspension algae in the water body is provided, at frond self inherent airbag structure, promote its flocculating settling to need not to add chemical reagent by pressure change, tool algae separation efficiency height, non-secondary pollution, advantage such as energy consumption is little, running maintenance is convenient.
The present invention is achieved by the following technical solutions:
The method of impelling the quick flocking settling of suspension algae in the water body that the present invention relates to comprises the steps:
The first step adopts the suspension water fetching device to collect the source water that is rich in the algae vegetative cell in eutrophication pollution waters, gathers in the algae equipment to supercharging through pump delivery.
In second step, the source water that enters the poly-algae equipment of supercharging stops in supercharging equipment after water shoot flows out, and poly-algae bucket is interior to be exported through shore pipe and the frustule under the flocking settling is trapped in.
The pressure of described supercharging equipment is 0.05-0.2MPa.
The time that described source water stops in supercharging equipment is 0.5-2h.
The device that impels the quick flocking settling of suspension algae in the water body that the present invention relates to, comprise: water-in, booster jar, swash plate, poly-algae bucket, static pressure mud valve, overflow weir, water shoot and forced air pipe, wherein: water-in is arranged at 1/3 place, supercharging tank body middle and lower part, swash plate is arranged in the middle of the supercharging tank body, poly-algae bucket is arranged at the supercharging tank base, the static pressure mud valve is connected on the shore pipe of poly-algae bucket below, overflow weir is arranged at the tank deck bottom, water shoot is arranged on tank deck top, and the forced air pipe coupling is at the tank body top.
Described poly-algae bucket 4 volumes are 1/10 of booster jar cubic capacity.
Described overflow weir is arranged at 0.5m place, tank deck bottom.
Described water shoot is arranged on 5m place, tank deck top.
Mechanism of the present invention is: aquatic planktonic algae all contains to be useful on regulates the airbag structure of VTOL (vertical take off and landing) in water body certainly, under certain working conditions, increase the air pressure of eutrophic water surface, airbag structure in the frustule is compressed, realize that it is in the intravital sedimentation of water, thereby make this part algae be able to separate, reach the purpose that reduces the interior swim alga quantity of water body and carry out corresponding nutritive salt from aqueous phase.
Compared with prior art, the present invention has following beneficial effect: need not add any chemical agent, not produce secondary pollution; The removal efficient height of swim alga, and can remove part nutritive salt simultaneously; Simple for process, easy to operate, be a kind of enriched water pollution improvement method of economical and efficient.Facility investment and working cost are low, and be practical.
Description of drawings
Fig. 1 is the schema of the inventive method;
Fig. 2 is an example structure synoptic diagram of apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Related chlorella, grid algae, diatom and microcystic aeruginosa derives from Huangpu River and gives in Pu bridge section and the Shanghai Communications University Si Yuan lake in the following embodiment, and the enforcement degree of present embodiment is not subjected to the difference of concrete a certain frond kind and changes.
As shown in Figure 1, implementation step is:
The first step adopts the suspension water fetching device to collect the source water that is rich in the algae vegetative cell in eutrophication pollution waters, gathers in the algae equipment to supercharging through pump delivery.The poly-algae equipment of supercharging is supercharging settling bowl (swash plate can be set) or autoclave, and required supercharging is provided by air compressor machine.
In second step, the source water that enters the poly-algae equipment of supercharging stops in supercharging equipment after water shoot flows out, and poly-algae bucket is interior to be exported through shore pipe and the frustule under the flocking settling is trapped in.
The pressure of described supercharging equipment is 0.05-0.2MPa.
The time that described source water stops in supercharging equipment is 0.5-2h.
As shown in Figure 2, device for carrying out said comprises: water-in, booster jar, swash plate, poly-algae bucket, static pressure mud valve, overflow weir, water shoot, forced air pipe, water-in is arranged at 1/3 place, supercharging tank body middle and lower part, swash plate is arranged in the middle of the supercharging tank body, poly-algae bucket is arranged at the supercharging tank base, and the static pressure mud valve is connected on the shore pipe of poly-algae bucket below, and overflow weir is arranged at the tank deck bottom, water shoot is arranged on tank deck top, and the forced air pipe coupling is at the tank body top.
Described poly-algae bucket 4 volumes are 1/10 of booster jar cubic capacity.
Described overflow weir is arranged at 0.5m place, tank deck bottom.
Described water shoot is arranged on 5m place, tank deck top.
Embodiment 1
With laboratory culture algae density is 4 * 10
7Individual/L, OD
600Value is that 1.2 mixed algae liquid (containing chlorella, grid algae, diatom and microcystic aeruginosa) 500ml is injected in the poly-algae jar of supercharging of 1L, airtight back is injected air to pressure to its top and is reached 0.2MPa, and stable maintenance 2h, behind the relief pressure algae liquid is derived, find that most frustules are the cohesion shape and are sunken to beaker bottom, adopt separating funnel separatory (the dense algae liquid of about 50ml) back supernatant liquor transparent substantially fully, algae density drops to 2 * 10
5Individual/L, OD
600Value is 0.04 only, shows that this pressurization removed about 99% frustule.
With laboratory culture algae density is 5 * 10
8Individual/L, OD
600Value is that 2.7 microcystic aeruginosa algae liquid 500ml is injected in the poly-algae jar of supercharging of 1L, airtight back is injected air to pressure to its top and is reached 0.1MPa, and stable maintenance 1h, behind the relief pressure algae liquid is derived, find that most of frustules are the cohesion shape and are sunken to beaker bottom, adopt separating funnel separatory (the dense algae liquid of about 50ml) back supernatant liquor that colourity is still arranged slightly, its algae density drops to 5 * 10
6Individual/L, OD
600Value is 0.24, shows that this pressurization removed about 99% frustule.
Embodiment 3
Continuously with 1m
3(algae density is 8 * 10 to the water body in certain eutrophication view waters
7Individual/L, OD
600Be 1.7) be incorporated into and begin to start topping-up pump pressurization in the supercharging coagulation jar and make jar intravital pressure reach 0.05MPa, keeping the water inlet pipe flow simultaneously is 0.5m
3/ h makes the residence time of diversion in supercharging coagulation jar be about 0.5h, finds that algae density is about 4.8 * 10 in the water outlet after moving 6h continuously
6Individual/L, OD
600Value is about 0.28, and has accumulated about 0.3m in the poly-bucket
3Rich algae mixed solution, (regularly) are opened the static pressure mud valve can be with the algae liquid discharge of this part coagulation, thereby has realized effectively separating of suspension algae and water body in the algae that this pressurization has been removed about 95% frustule.
This method can make the planktonic algae more than 95% assemble sedimentation, removes the nutritive salt such as nitrogen phosphorus of respective amount simultaneously with the frond form, strengthens the self-purification capacity of eutrophication water; Algotrophic nutrient cell under coagulation separates can be used as fertilizer, feed or fermentation producing methane.
Claims (7)
1. device that impels the quick flocking settling of suspension algae in the water body, it is characterized in that, comprise: water-in, booster jar, swash plate, poly-algae bucket, static pressure mud valve, overflow weir, water shoot and forced air pipe, wherein: water-in is arranged at supercharging tank body middle and lower part, swash plate is arranged in the middle of the supercharging tank body, poly-algae bucket is arranged at the supercharging tank base, the static pressure mud valve is connected on the shore pipe of poly-algae bucket below, overflow weir is arranged at the tank deck bottom, water shoot is arranged on tank deck top, and the forced air pipe coupling is at the tank body top.
2. the device that impels the quick flocking settling of suspension algae in the water body according to claim 1 is characterized in that, described poly-algae bucket volume is 1/10 of a booster jar cubic capacity.
3. the device that impels the quick flocking settling of suspension algae in the water body according to claim 1 is characterized in that described overflow weir is arranged at 0.5m place, tank deck bottom.
4. the device that impels the quick flocking settling of suspension algae in the water body according to claim 1 is characterized in that described water shoot is arranged on 5m place, tank deck top.
5. the method according to the quick flocking settling of the described device of claim 1 is characterized in that, may further comprise the steps:
The first step adopts the suspension water fetching device to collect the source water that is rich in the algae vegetative cell in eutrophication pollution waters, gathers in the algae equipment to supercharging through pump delivery;
In second step, the source water that enters the poly-algae equipment of supercharging stops in supercharging equipment after water shoot flows out, and poly-algae bucket is interior to be exported through shore pipe and the frustule under the flocking settling is trapped in.
6. the method for quick flocking settling according to claim 5 is characterized in that, in second step, the pressure of described supercharging equipment is 0.05-0.2MPa.
7. the method for quick flocking settling according to claim 5 is characterized in that, in second step, the time that described source water stops in supercharging equipment is 0.5-2h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100524701A CN101565225B (en) | 2009-06-04 | 2009-06-04 | Method and device capable of promoting rapid agglomeration and settlement of suspended alga in water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100524701A CN101565225B (en) | 2009-06-04 | 2009-06-04 | Method and device capable of promoting rapid agglomeration and settlement of suspended alga in water |
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| Publication Number | Publication Date |
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| CN101565225A CN101565225A (en) | 2009-10-28 |
| CN101565225B true CN101565225B (en) | 2011-06-08 |
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| CN2009100524701A Expired - Fee Related CN101565225B (en) | 2009-06-04 | 2009-06-04 | Method and device capable of promoting rapid agglomeration and settlement of suspended alga in water |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225294A (en) * | 2013-04-28 | 2013-07-31 | 江苏中科基业环境科技有限公司 | Floating algae collecting method |
| CN109231634B (en) * | 2018-11-06 | 2021-09-21 | 江苏澳洋生态园林股份有限公司 | Water body restoration device with algae-laden water separating function |
| CN111073794B (en) * | 2019-12-31 | 2023-06-30 | 中国科学院青岛生物能源与过程研究所 | A gas-driven algae liquid circulation device for cultivating microalgae and its application method |
| CN111747612A (en) * | 2020-07-01 | 2020-10-09 | 无锡德林海环保科技股份有限公司 | Blue algae fishing and separating method |
| CN113620397B (en) * | 2021-07-30 | 2022-06-14 | 水利部交通运输部国家能源局南京水利科学研究院 | Blue algae high-pressure prevention and control system, prevention and control method and application thereof |
| CN116858730A (en) * | 2023-07-13 | 2023-10-10 | 华东师范大学 | Flocculation-sedimentation experimental system capable of considering biological factor influence |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002177990A (en) * | 2000-12-14 | 2002-06-25 | Yasumasa Kondo | Water cleaning method and water cleaning plant |
| CN201136798Y (en) * | 2007-11-29 | 2008-10-22 | 日本国有限公司东星技研 | Equipment for treating cyanobacteria in bodies of water |
| CN201214028Y (en) * | 2008-05-15 | 2009-04-01 | 宜兴市鑫峰环保设备有限公司 | High efficiency sewage precipitator |
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2009
- 2009-06-04 CN CN2009100524701A patent/CN101565225B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002177990A (en) * | 2000-12-14 | 2002-06-25 | Yasumasa Kondo | Water cleaning method and water cleaning plant |
| CN201136798Y (en) * | 2007-11-29 | 2008-10-22 | 日本国有限公司东星技研 | Equipment for treating cyanobacteria in bodies of water |
| CN201214028Y (en) * | 2008-05-15 | 2009-04-01 | 宜兴市鑫峰环保设备有限公司 | High efficiency sewage precipitator |
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| CN101565225A (en) | 2009-10-28 |
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