CN1323035C - Method for cleaning out blue algae of water area - Google Patents

Method for cleaning out blue algae of water area Download PDF

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Publication number
CN1323035C
CN1323035C CNB2004100672607A CN200410067260A CN1323035C CN 1323035 C CN1323035 C CN 1323035C CN B2004100672607 A CNB2004100672607 A CN B2004100672607A CN 200410067260 A CN200410067260 A CN 200410067260A CN 1323035 C CN1323035 C CN 1323035C
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China
Prior art keywords
blue algae
blue
water
water area
algae
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CNB2004100672607A
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Chinese (zh)
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CN1762847A (en
Inventor
殷肇君
周江
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殷肇君
周江
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Priority to CNB2004100672607A priority Critical patent/CN1323035C/en
Publication of CN1762847A publication Critical patent/CN1762847A/en
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Publication of CN1323035C publication Critical patent/CN1323035C/en

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Abstract

The present invention relates to a method for cleaning out blue algae in a water area, particularly to a method for cleaning out the blue algae in a natural lake and an urban landscape water area. The present invention needs to solve the technical problem that the present invention provides a scheme that the blue algae in the water area not only is cleaned out, but also is recycled. More specifically, nitrogen and phosphorus in the water body can be transferred by the blue algae, and moreover, the mass propagation of the blue algae can be controlled. Furthermore, the method has the advantages of high efficiency, low cost and easy blue algae treating implementation. The present invention has that technical scheme that a purifying agent is sprayed in the process of the stirrer running operation in the blue algae water area. The spraying operation is characterized in that the purifying agent is formed by compounding three kinds of flocculating agents of bentonite, polyaluminium chloride and cationic polyacrylamide; the mixed solution are sprayed after the bentonite and the polyaluminium chloride are dissolved and mixed, and subsequently, the polyacrylamide is sprayed; floating flocculate substances are taken out by a net, and then, filtered water flows back to the water area by the mechanical dewatering operation; zymocyte is added in the dewatered algal residue to be fermented into organic fertilizer. The present invention is suitable for treating the blue algae in the water area.

Description

Remove the method for blue-green algae in the waters
Technical field:
The present invention relates to the method for water environment protection, especially the method for blue-green algae is removed in natural lake and urban look waters.
Background technology
Water eutrophication causes a large amount of breedings of blue-green algae to cause blue-green alga bloom, and the dead back of rotting of blue-green algae discharges toxin and produces stench, can influence water quality and cause the person poultry poisoning.20th century, the nineties began, and lake, park, the residential quarters man-made lake in the lake in the natural waters of China and urban look waters cause blue algae bloom because of body eutrophication, severe contamination water quality.Some natural lake has had a strong impact on industrial and agricultural production, tap water and tourism because of blue algae bloom.Though country has dropped into a huge sum of money and administered, effect is not fully up to expectations.In addition, blue algae bloom in various degree appears in lake, Urban Parks and residential quarters man-made lake, has also had a strong impact on to view and admire and travel.
Domestic have chemistry, biological and physical method in the method for removing waters blue-green algae.There is the problem of chemical pollution in chemical process because of throwing in pharmaceutical chemicals in the waters, unavoidably water quality is brought in various degree harm; Biological method both had been subjected to environmental influence also may cause certain influence to biological group kind structure, species diversity, embodied its effect at short notice than difficulty; Physical method mainly contains mechanical removal, bio-aeration, utilize machinery or artificial directly net to drag for and remove blue-green algae, though the method effect that direct net drags for is apparent, but because of frond little, the dredger mesh that adopts is little, not only pull blue-green algae when net drags for out and also take large quantity of moisture out of, therefore, net drags for that condition is poor, efficient is low; Employing changes that water law, diversion wash away method, water pump is taken the more original backwardness of method that method is removed blue-green algae in the waters away, and cost height, efficient are low, and are to pollute removal of home, very easily cause secondary pollution.
Once biochemical compound algae-inhibiting agent, chemical algicide, the water purification agent that uses in removing waters blue-green algae pollution had a common ground at present, be that the blue-green algae throw out produces sedimentation, the throw out piece of especially single flocculation agent is little and evacuate, and drags at water surface net and does not only improve the condition that net drags for but also the cost that drops into flocculation agent in the removing method at 0.54~0.59 yuan/m 3Between.Because the blue-green algae throw out sinks in the pond, according to the conservation of matter theorem, nitrogen and phosphorus still in the pond, through after a while, still can produce blue algae bloom, do not deal with problems at all.Though the flat 1-130778A of documents TOHKEMY (1989.05.23) is a kind of to be handled with water purification agent in the method for blue-green algae and disclose " clay material and pass through Al 2O 3And Fe 2O 3Stir in the water body that the powdery coagulating agent add to separate with obtaining behind the inorganic acid reaction, blue-green algae is floating in throw out, and floating matter is salvaged by the recovery ship that has lead-frame, and throw out places the collection box in cofferdam, in water trap, dewater then, in the current backwater body." but this method does not still have solution to make the buoyant blue-green algae reach big and more firm flocculation requirement, does not reach purpose and effect that present method need reach.Therefore, still wash away method at present in method and the diversion of adopting water pump to take away.
Summary of the invention
The technical issues that need to address of the present invention are both to have needed to remove the blue-green algae in waters and the blue-green algae of removing is recycled, and constantly shift nitrogen and phosphorus in the water body and control blue algae bloom by blue-green algae again; Should raise the efficiency and reach water quality and become clear, reduce cost again, the method for improvement blue-green algae easy to implement.
When adopting the stirrer in the blue-green algae waters to move, technical scheme of the present invention sprays water purification agent, three kinds flocculation agent is composite forms by nontoxic wilkinite (Bentonite), polymerize aluminum chloride (PAC), polyacrylamide (cationic PAM) to it is characterized in that water purification agent, wilkinite and polymerize aluminum chloride dissolving mix the back sprays, and and then sprays polyacrylamide; Because the synergistic effect of three kinds of flocculation agents produces the big and firm buoyant throw out of piece at the water surface; Drag for by machinery or artificial net then, make filtered water stream backwater territory by mechanical dehydration again, add zymophyte in the algae-residue after dehydration and be fermented into organic fertilizer, be used for the flowers fertilising.
The present invention is owing to adopt the water purification agent of wilkinite, polymerize aluminum chloride, three kinds of composite compositions of flocculation agent of polyacrylamide, simultaneously wilkinite and polymerize aluminum chloride dissolving mixing back are successively sprayed respectively with polyacrylamide, can produce the big and firm buoyant blue-green algae throw out of big gauge block at the water surface, created and sprayed compatible opportunity that water purification agent and water surface net drag for reset mode, the many more flocculating effects of blue-green algae are good more, because water surface net drags for improvement of terms, the method that helps adopting direct net to drag for improves net and drags for efficient; And used water purification agent cost is low, and the cost that dense blue-green algae water body consumes water purification agent is 0.30 yuan/m 3, compare with normally used water purification agent save cost near half; The recyclable utilization of algae-residue of removing is fermented into organic fertilizer, and being used for the flowers fertilising turns waste into wealth and avoid the blue-green algae secondary pollution; Present method adopts the mode of progressively removing, and is actually by blue-green algae and constantly shifts nitrogen and phosphorus in the water body, progressively alleviates until the control blue algae bloom, and the problem that fundamentally solves body eutrophication reaches water quality and becomes clear purpose.Present method can not only effectively be improved the water quality in natural lake and urban look waters, and simple for process, applies easily.
Description of drawings
Fig. 1 is the process flow sheet that the present invention removes blue-green algae in the waters.
Embodiment
Spray water purification agent when implementing best way of the present invention and be the stirrer operation in the blue-green algae waters, water purification agent is by three kinds of nontoxic wilkinites, polymerize aluminum chloride, cationic-type polyacrylamide flocculation agent composite composition, the proportioning of wilkinite, polymerize aluminum chloride, cationic-type polyacrylamide pulvis is 5: 1: 0.1, spray wilkinite and polymerize aluminum chloride dissolving mixed solution earlier, wilkinite and polymerize aluminum chloride mixing solutions concentration are 7%, and then spray polyacrylamide, concentration of polyacrylamide solution is 1 ‰; Because the synergistic effect of three kinds of flocculation agents just produces the big and firm buoyant blue-green algae throw out of piece at the water surface; This is to implement the best conditions that water surface net drags for, adopting mesh then is that 24-30 purpose dredger drags for by machinery or artificial net, the blue-green algae throw out of pulling out is passed through mechanical dehydration, can adopt centrifuge dehydration equipment to carry out processed, make filtered water stream backwater territory, add zymophyte simultaneously in the algae-residue after dehydration and be fermented into organic fertilizer, the smell that the algae-residue fermenting process distributes is similar to aroma, can avoid algae-residue to rot to distribute stench, algae-residue fertilizer can be used for the flowers fertilising.

Claims (1)

1, removes the method for blue-green algae in the waters, the stirrer of employing in the blue-green algae waters sprays water purification agent when moving, it is characterized in that water purification agent is by three kinds of wilkinites, polymerize aluminum chloride, cationic-type polyacrylamide flocculation agent composite composition, the proportioning of wilkinite, polymerize aluminum chloride, three kinds of pulvis of cationic-type polyacrylamide is 5: 1: 0.1, wilkinite and polymerize aluminum chloride mixing solutions concentration are 7%, concentration of polyacrylamide solution is 1 ‰, wilkinite and polymerize aluminum chloride dissolving mix the back sprays, and and then sprays polyacrylamide; Drag for by net at water surface buoyant throw out, make filtered water stream backwater territory by mechanical dehydration again, add zymophyte in the algae-residue after dehydration and be fermented into organic fertilizer.
CNB2004100672607A 2004-10-19 2004-10-19 Method for cleaning out blue algae of water area CN1323035C (en)

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CN1323035C true CN1323035C (en) 2007-06-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100504263C (en) * 2007-08-14 2009-06-24 江苏鼎泽环境工程有限公司 Blue algae volume reduction technique
CN102311161A (en) * 2010-07-01 2012-01-11 中国科学院生态环境研究中心 Method for treating red tide by using sand

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ZA200904449B (en) * 2007-02-01 2010-08-25 Unilever Plc Water purification composition
CN101327976B (en) * 2008-07-15 2012-01-25 南通立源水业科技发展有限公司 Efficient water treatment flocculant
CN101734769B (en) * 2008-11-04 2012-10-24 边花淑 Green alga scavenging agent and preparation method thereof
RU2448051C2 (en) * 2010-07-29 2012-04-20 Государственное образовательное учреждение высшего профессионального образования Иркутский государственный университет Algicide for treating swimming pools
CN102303942B (en) * 2011-04-16 2013-11-13 安徽合协生态环境科技有限公司 Blue alga cake tubular pyrohydrolysis dewatering method and device
CN103224273A (en) * 2013-04-23 2013-07-31 中国科学院海洋研究所 Composite modified clay for eliminating seawater red tide
CN104229957A (en) * 2013-06-24 2014-12-24 张家领 Compound flocculant taking natural minerals as main components
CN103588380A (en) * 2013-11-15 2014-02-19 江苏绿威环保科技有限公司 Algae mud deep dehydration method by utilizing strong oxidizing agent
CN103936121B (en) * 2014-04-18 2016-03-09 芜湖凯奥尔环保科技有限公司 A kind of can the Powdered blue algae treatment agent and preparation method thereof of mosquito repellent
CN104291389A (en) * 2014-09-23 2015-01-21 博瑞德(南京)净化技术有限公司 Sewage treating agent and application method thereof
CN105753126A (en) * 2016-05-18 2016-07-13 路林茫 Surface water body total-condensation in-situ purification method
CN106745581B (en) * 2016-11-18 2020-07-31 泉州师范学院 Rapid river channel purification ecological cycle process

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100504263C (en) * 2007-08-14 2009-06-24 江苏鼎泽环境工程有限公司 Blue algae volume reduction technique
CN102311161A (en) * 2010-07-01 2012-01-11 中国科学院生态环境研究中心 Method for treating red tide by using sand

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