CN102745812A

CN102745812A - Biological treatment process for surface water with duckweeds

Info

Publication number: CN102745812A
Application number: CN2012102842128A
Authority: CN
Inventors: 施怀荣; 刘涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-12
Filing date: 2012-08-12
Publication date: 2012-10-24

Abstract

A biological treatment process for surface water with duckweeds is characterized by comprising a constructed wetland and an anaerobic biochemical pond, the constructed wetland is arranged on a river channel revetment, the anaerobic biochemical pond is arranged at the position of a drain outlet of a river channel, an outlet of the anaerobic biochemical pond leads to the constructed wetland, and a mist spray device is arranged at the position of the junction of the constructed wetland and the river channel and used for casting biological agents into the river channel and the constructed wetland and breeding mature ducks in a water area to be treated. The biological treatment process has high popularization values in treatment and maintenance of water bodies with a large amount of proliferated and gathered duckweeds.

Description

A kind of biological treating technology that breaks out the surface water of duckweed

Technical field

The present invention relates to a kind of biological and ecological remediation and treatment process of the extensive propagation of surface water outburst duckweeds such as river course, lake, the pollutent in particularly serious to endogenous pollution, the bed mud continues to breed in a large number toward the duckweed that water body discharges or turnover rate and the low surface water of water body renewal rate occur the water body of (duckweed covers water meter area sum above more than 50% of water surface area).

Background technology

The water body of a large amount of propagation of duckweed is general than being easier to occur in two types of water bodys: one type is to bring more pollution substance because the rainwash that long-term municipal wastewater or rain sewage accumulate continues to enter, and endogenous pollution---the bed mud of these pollution substances continuous enrichment in water body formation water body.Necessarily controlled in the external source pollution after (pollution of the external source except rain sewage has obtained amputation completely to still have a small amount of external source to pollute perhaps), in the process that the ecosystem of water body progressively recovers, the extensive propagation of duckweed very easily occurred; Another kind of is that those water body turnover rates and all lower lake of renewal rate occur in the process of paludification, and duckweed very easily becomes the advantage species and large-scale breeding.

(area coverage of duckweed has surpassed more than 50% of water surface area to the water body of appearance duckweed large-scale breeding; And be the trend that enlarges propagation day by day) because duckweed growth has blocked water body and extraneous contacting; The dissolved oxygen of water body constantly descends; And will causing water body pollution load to occur, the continuous release of the pollutent in the bed mud increases day by day; Water body is because black smelly phenomenon appears in the continuous reduction of dissolved oxygen, and, because breaking the species diversity that causes water body with the water ecology balance, the large-scale breeding of duckweed descends.And in case the large-scale breeding of duckweed occurs, the landscape effect of water body will receive tangible influence, and the water quality of water body also can descend day by day.Biological prosthetic of the present invention is administered technology and has then been solved a large amount of propagation of duckweed and because the water quality deterioration problem that a large amount of propagation of duckweed are brought well.

Summary of the invention

Problem to a large amount of propagation of duckweed; The object of the invention mainly is to provide a kind of safe, effective, non-secondary pollution; Not only can control and cut down the growth of duckweed, can improve simultaneously the water quality of water body, progressively recover the biological treating novel process of water ecosystem.

Technical solution of the present invention is following:

The biological and ecological remediation and treatment novel process of a large amount of propagation of a kind of surface water outburst duckweed; This method is from the root of a large amount of propagation of duckweed; In conjunction with the growth characteristics of duckweed with and the requirement of growing environment carried out the control of duckweed large-scale breeding; Use biological method that the ecosystem of water body is recovered to administer simultaneously, reach and fundamentally control the purpose that duckweed continues a large amount of propagation, main improvement principle is following:

The growth of duckweed be unable to do without replenishing of the intravital nutritive salt of water; In case when forming the duckweed large-scale breeding; Because it is excessive that duckweed covers coverage of water; Cause water body and the extraneous minimizing that contacts, make the intravital dissolved oxygen of water descend rapidly, and water body also has the phenomenon of peculiar smell owing to turning black appears in anoxic.In addition, because the growth and breeding of duckweed is rapider, under the situation that the nutritive salt of water body exceeds standard, rely on physical method can't suppress the breeding growth of duckweed merely.Therefore, we need combine the biological and ecological method that the duckweed breeding is thoroughly controlled except physical method.

Duckweed extensively is distributed in most of waters of China as a kind of floating plant, requires from the growing environment of duckweed, and duckweed growth requires that the nutritive salt of water body is sufficient, pH value is slight alkalinity, and the water body flowability is relatively low etc.The water body that meets these requirements all might break out extensive duckweed reproductive patterns.Because duckweed is different from general low algae such as grade, it accumulates in water surface and its complete stool can be eaten by general poultry.

Our biological and ecological is administered technology just after the characteristic of the growth and breeding of studying duckweed; Set about it is administered from the rule of its growth and breeding: at first, we need control the growth scale of duckweed---to the water body that the extensive propagation of duckweed occurs (area coverage of duckweed has surpassed more than 50% of water surface area, and is the trend that enlarges propagation day by day); We must at first control the growth and breeding speed of duckweed; Salvage through peripheral regional area is artificial (be mainly dead duckweed and assemble than multizone, account for the water surface 10%), all the other waters are through introducing the ecological treatment method of adult duck (putting a duck in a suitable place to breed for average 150 squares); Physics and ecological method two combine; After the preliminary breeding of control duckweed within 15 days, this administers the step end, finishes to salvage and duck is withdrawn from the waters.After the preliminary control of duckweed breeding, carry out ecologic competition and reach from ecology and control duckweed growth through planting floating plant such as red water chestnut, frogbit and duckweed.After this promptly enter into the water quality regulation stage of water body; Because if fundamentally control the duckweed breeding of water body, we must control the water quality of water body; Could fundamentally control the propagation of duckweed after nutritive salt such as the water quality reaching standard that has only water body, particularly nitrogen phosphorus are up to standard.

Concrete technology is: the artificial swamp with channel revetment is set; And the anaerobic biological pond that is arranged at the Drain contamination for river channel mouth; Artificial swamp is led in the outlet of anaerobic biological pond; At said artificial swamp and river course intersection spraying equipment is set and is used in river course and artificial swamp, adding biotechnological formulation, in pending waters, throw in the duck that grows up simultaneously.

Preferably, described artificial swamp is the artificial swamp that surface current wetland and current wetland combine, and wherein plants floating plants such as red water chestnut, frogbit.

Preferably, described anaerobic biological pond is upflowing and is embedded in subterranean glass reinforced plastic tank body reactor drum.

Preferably, the quantity of the adult duck of said input is that a duck is thrown in 150 squares of waters.

Preferably, described biotechnological formulation comprises compound bio-enzyme and mikrobe.

Preferably, described compound bio-enzyme comprises at least three kinds in lypase, cellulase, half cellulase, glycase, the extracellular enzyme.

Preferably, described mikrobe comprises at least three kinds in bacillus, Bacillus megatherium, nitrifier and the denitrifying bacteria.

Preferably, described spraying equipment is a stretcher-mounted sprayer.

Breed in a large number to duckweed occurring, not only influenced landscape effect, and have a strong impact on the surface water of water quality; Need a kind of safe, efficient, technology of having no side effect badly; The present invention then can solve this type problem well, and improvement technology of the present invention is compared with traditional improvement method, has in the short period of time and can eliminate the duckweed large-scale aggregating; Recover river course, the landscape effect in lake and the advantage of self-purification capacity, and keep higher standard for a long time.The invention has the beneficial effects as follows that this technology has higher promotional value for the improvement of the water body that a large amount of propagation of duckweed occur.

Embodiment

The present invention is the biological and ecological remediation and treatment process of a large amount of propagation of a kind of surface water outburst duckweed; In governance process; The artificial swamp of setting and channel revetment, and the anaerobic biological pond that is arranged at the Drain contamination for river channel mouth earlier, artificial swamp is led in the outlet of anaerobic biological pond; At said artificial swamp and river course intersection spraying equipment is set and is used in river course and artificial swamp, adding biotechnological formulation, in pending waters, throw in the duck that grows up simultaneously.

Organizing manpower that dead angle area is carried out manual work when duckweed quantity is big salvages; Put the adult duck of ratio introduction of a duck simultaneously in a suitable place to breed according to 150 squares duckweed; After the preliminary breeding of control duckweed within 15 days, begin to plant floating plant such as red water chestnut, frogbit and duckweed and carry out ecologic competition and reach from ecology and control duckweed growth.

After the growth of duckweed is controlled, begin to carry out the water correction biological treating, cut down the content of the intravital business salt of water; Cut off the nutritive salt of algae; Add compound bio-enzyme and microbial preparation, utilization high pressure spraying equipment directly is sprayed onto compound bio-enzyme and microbial preparation in the water body, and the sprinkling amount decides according to the pollution load of water body (to be generally 0.5-5ppm); Along with the carrying out of construction, the main water-quality guideline of water body will progressively be increased to the above standard of face of land V class water.Thereby reach the purpose of fundamentally controlling a large amount of propagation of duckweed.

Claims

1. biological treating technology that breaks out the surface water of duckweed; It is characterized in that: comprise the artificial swamp that is provided with channel revetment; And the anaerobic biological pond that is arranged at the Drain contamination for river channel mouth; Artificial swamp is led in anaerobic biological pond outlet, at said artificial swamp and river course intersection spraying equipment is set and is used in river course and artificial swamp, adding biotechnological formulation, simultaneously the adult duck of input in pending waters.

2. technology according to claim 1 is characterized in that, described artificial swamp is the artificial swamp that surface current wetland and current wetland combine, and plants floating plants such as red water chestnut, frogbit in the artificial swamp.

3. technology according to claim 1 is characterized in that, described anaerobic biological pond is upflowing and is embedded in subterranean glass reinforced plastic tank body reactor drum.

4. according to the described technology of one of claim 1, the quantity of the adult duck of said input is that a duck is thrown in 150 squares of waters.

5. according to the described technology of one of claim 1-4, described biotechnological formulation comprises compound bio-enzyme and mikrobe.

6. technology according to claim 5 is characterized in that, described compound bio-enzyme comprises at least three kinds in lypase, cellulase, half cellulase, glycase, the extracellular enzyme.

7. technology according to claim 5 is characterized in that described mikrobe comprises at least three kinds in bacillus, Bacillus megatherium, nitrifier and the denitrifying bacteria.

8. technology according to claim 5 is characterized in that, described spraying equipment is a stretcher-mounted sprayer.