CN101122126A

CN101122126A - Blue algae salvaging method for preventing blue algae water bloom generating

Info

Publication number: CN101122126A
Application number: CNA2007100239188A
Authority: CN
Inventors: 刘其哲; 刘天飚; 刘天舒
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-28
Filing date: 2007-06-28
Publication date: 2008-02-13

Abstract

The invention relates to a water body treatment technology, in particular to a method of salvaging blue algae so as to prevent blue algal bloom. In accordance with the technical proposal provided by the invention, the process is: a. Blue algae collection:a landing craft type boat with front deck and big opening door is adopted; both sides of the bow of the boat are fixed side walls; one part of the two side walls in soaked into the water; a blade is articulated between the two side walls; the rear end of the blade is a hatch for collecting blue algae; the roof of the blade is articulated to the upper edge of the hatch; when moving towards the blue algae area, the boat drops the blade of the bow and scoops up the blue algae floating on the water with the blade; as the boat moves forward, the blue algae will be continuously absorbed into the hatch; b. Blue algae absorption under negative pressure:The blue algae scooped up into the hatch is absorbed into a conveyor by a negative pressure blue algae absorbing machine with the negative pressure principle; c. Conveying:First the blue algae conveyed by the negative pressure blue algae absorbing machine is collected, and then the collected blue algae is conveyed into a fodder processing machine by a rotational screw stem. Treatment of blue algae with the method can prevent the blue algal bloom.

Description

Prevent that blue-green alga bloom from the method for blue-green algae taking place to salvage

Technical field

The present invention relates to a kind of water body treatment technology, specifically a kind of method that prevents the salvaging blue-green algae that blue-green alga bloom takes place.

Background technology

Work as blue algae bloom, large tracts of land accumulates in the bank, and is deposited in when 2～3cm is above on the water surface, sends enough pick-up boats, adopts present technique to salvage rapidly, before being dried up, finishes salvaging blue-green algae.To guarantee that ' wawter bloom ' do not take place, and do not cause the blue-green algae disaster.

Over nearly more than 20 years, the national economy of China has obtained development rapidly, and the people's living standard also is greatly improved, but owing to the protection of having ignored environment, causes most of natural water body of China to be subjected to pollution in various degree.Wherein, eutrophication has in various degree appearred in most of lake, has many water bodys quite serious, as, the Taihu Lake in the Chaohu in Anhui, the Dian Chi in Yunnan, Zhejiang, Jiangsu or the like.

Because nitrogen in the eutrophication water, phosphorus content are all higher, add that the ecosystem of water body is destroyed, the auto purification ability of water body greatly reduces.The nitrogen of high-load, phosphorus water can impel the algal bloom growth in the water.At present, the amount of algae in the Taihu Lake has reached tens million of/liters, and many areas are sometimes up to hundred million/liter.Because algae can utilize nitrogen, CO ₂And sunlight, carry out photosynthesis, make fat, protein and carbohydrate, just further aggravated the eutrophication process of water body.Therefore, a large amount of algae are water body important, very important " secondary pollution sources ".

In the water body of eutrophication, a kind of blue-green algae of microcystic aeruginosa is arranged, it can breed growth in the water body more than " middle eutrophication " in a large number.This algae has a specific character, under the suitable weather condition sunny, that wind-force is little, temperature is higher, floats on the water surface on automatically, moving time of slow wind, alee locates at leisure to waft.In case waft on bank or other obstacles, will be on the bank or the obstacles limit, build up also and can on the water surface, pile up.Sub-lake in Taihu Lake in 1991--pile up on the water surface in lake up to 30～40cm on plum beam loke shore limit, blue-green algae; Blue-green algae was again at Mei Lianghu, tribute lake bulk deposition in 2007.These are stacked on the water surface and break away from the blue-green algae of water body, by solar radiation, add that temperature is up to more than 30 ℃, cause the mortality of frond large tracts of land, rot, cause the water body of whole algae accumulation area rotten, dissolved oxygen exhausts, air and water body are smelly, animal mortalities such as water fish shrimp." wawter bloom " disaster that Here it is is called by people.

The consequence of being brought by " wawter bloom " is very serious.At first, ambient air has a kind of unpleasant stench flavor; Secondly, the fishes and shrimps mortality in the water; Again secondly, the water body here is rotten, has peculiar smell, is difficult to remove, and resource of water supply can't be fetched water, and causes water factory to stop production the supply generation crisis of water.' wawter bloom ' taken place in, area, Wuxi in 2007 in 1991, causes the Wuxi million people difficulty that supplies water; In addition, after the blue-green algae death, can produce a kind of algae toxin, to all toxic effects such as people and animals.

Because blue-green algae is individual only tens microns tiny organism, in addition, causing in the body of Microcystis aeruginosa of " wawter bloom " has an air bag, along with conditions such as temperature, sunlight, wind-force can become greatly, diminish; Moreover blue-green algae usually can connect and grows together, and therefore, their individuality is big and small, has nothing in common with each other.So, to salvage with screen cloth, difficulty is very big, and intensity is very high, and poor effect, efficient are very low.

At present, still there is not effective blue-green algae fishing tool both at home and abroad.In order to help meet an urgent need, adopt the instrument of excrement spoon class to connect algae band water more and salvage earlier on the ship, transport to the bank again, at hollow place landfill, its labour intensity is big, and effect is also very poor, and is also very serious to the pollution on bank.

Summary of the invention

The objective of the invention is to design a kind of blue-green alga bloom that prevents the method for blue-green algae takes place to salvage, when utilizing this method to handle blue-green algae, can avoid occurring blue-green algae " wawter bloom ".

According to technical scheme provided by the invention, its flow process is:

A, collect blue-green algae--the boats and ships of the landing craft formula of adopt fore deck, opening the door greatly; The stem both sides of these boats and ships are fixing sidewall, and the part of two sidewalls is immersed in the water, and hinged perching knife between two sidewalls is the cabin that gathers blue-green algae in the rear end of perching knife, and the root of perching knife is articulated in the upper edge of cabin; When boats and ships are exercised in face of the algae district, the perching knife of stem is put down, utilize perching knife that the blue-green algae of bubbling through the water column is scooped up, along with advancing of ship, blue-green algae will constantly enter in the cabin;

B, negative pressure are inhaled algae--and with the blue-green algae that shovel advances cabin, utilize negative pressure to inhale the algae machine, by negative pressure principle, suction conveyor;

C, conveying--collect negative pressure earlier and inhale the blue-green algae that the algae machine is sent here; Again the blue-green algae of collecting is utilized the screw rod of rotation, be transported on the feed processor.

D, processing--with the blue-green algae of sending here,, manufacture the particle article through extruding, high temperature.

Described feed processor is a pelleter, and the blue-green algae that utilizes pelleter constantly to send here, is processed into dried granular article.

Described conveyer is a screw rod conveyor.Described suction algae machine is a fan impeller.

Advantage of the present invention is: can salvage salvaging very difficult blue-green algae, and realize the automation salvaging basically, its realization will be an important breakthrough.Its advantage is: speed is fast; The efficient height; The labour economizes; Cost is low; Post processing is easy, and creates favorable conditions for further developing.

The specific embodiment

1, collect blue-green algae--the boats and ships of the landing craft formula of adopt fore deck, opening the door greatly; The stem both sides of these boats and ships are fixing sidewall, and the part of two sidewalls is immersed in the water, and hinged perching knife between two sidewalls is the cabin that gathers blue-green algae in the rear end of perching knife, and the root of perching knife is articulated in the upper edge of cabin; When boats and ships are exercised in face of the algae district, the perching knife of stem is put down, utilize perching knife that the blue-green algae of bubbling through the water column is scooped up, along with advancing of ship, blue-green algae will constantly enter in the cabin.This boats and ships are similar to landing craft or ferryboat, have at the stem position can turning lifting false deck, this false deck is in landing craft or ferryboat driving process, upwards dig, when arriving the bank, false deck is put down, the outer end on deck is rested on the bank, so that motor vehicle arrives on the bank by the deck from ship.The present invention is then opposite, false deck is used as perching knife uses; In the process of moving, perching knife is put down, and the outer end of perching knife is immersed in the water, when foot, the blue-green algae of bubbling through the water column will enter cabin along perching knife.

2, negative pressure is inhaled algae--the blue-green algae that will shovel advances cabin, and utilize negative pressure to inhale algae machine (can produce the equipment of negative pressure as the fan impeller of outsourcing, air compressor machine, vacuum pump etc.), by negative pressure principle, suck conveying worm;

3, carry--utilize conveyer (as the screw rod conveyor of outsourcing) to collect negative pressure and inhale the blue-green algae that the algae machine is sent here; Again the blue-green algae of collecting is utilized the screw rod of rotation, be transported on the feed processor;

4, dry and make graininess--the blue-green algae that utilizes the pelleter of outsourcing constantly to send here, be processed into dried granular article.

After utilizing the present invention, 1, blue-green algae salvaged in a large number, and processing is handled immediately, avoids the generation of blue-green algae ' wawter bloom ' disaster; 2, help reducing ' secondary pollution ' in lake, the improvement of lake water quality is played an important role; 3 and carry out timely, the degree of depth, high temperature, expanded processing, will help exploitation ' seaweed food ', ' algae raw material ' etc., strive for realizing turning waste into wealth; 4, carry out timely, the processing degree of depth, high temperature, granular, reduced the needed place of post processing, manpower and the air that land is caused, the pollution in soil.

Claims

1. prevent that blue-green alga bloom from the method for blue-green algae taking place to salvage, and is characterized in that:

A, collect blue-green algae---the boats and ships of the landing craft formula of adopt fore deck, opening the door greatly; The stem both sides of these boats and ships are fixing sidewall, and the part of two sidewalls is immersed in the water, and hinged perching knife between two sidewalls is the cabin that gathers blue-green algae in the rear end of perching knife, and the root of perching knife is articulated in the upper edge of cabin; When boats and ships are exercised in face of the algae district, the perching knife of stem is put down, utilize perching knife that the blue-green algae of bubbling through the water column is scooped up, along with advancing of ship, blue-green algae will constantly enter in the cabin;

B, negative pressure are inhaled algae---and with the blue-green algae that shovel advances cabin, utilize negative pressure to inhale the algae machine, by negative pressure principle, suction conveyor;

C, conveying---collect negative pressure earlier and inhale the blue-green algae that the algae machine is sent here; Again the blue-green algae of collecting is utilized the screw rod of rotation, be transported on the feed processor.

2. prevent according to claim 1 that blue-green alga bloom from the method for blue-green algae taking place to salvage, it is characterized in that: described feed processor is a pelleter, and the blue-green algae that utilizes pelleter constantly to send here, is processed into dried granular article.

3. prevent according to claim 1 that blue-green alga bloom from the method for blue-green algae taking place to salvage, it is characterized in that: described conveyer is a screw rod conveyor.

4. prevent according to claim 1 that blue-green alga bloom from the method for blue-green algae taking place to salvage, it is characterized in that: described suction algae machine is a fan impeller.