CN101654302B - Method for removing algae in water by using earthworms - Google Patents
Method for removing algae in water by using earthworms Download PDFInfo
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- CN101654302B CN101654302B CN2009101960163A CN200910196016A CN101654302B CN 101654302 B CN101654302 B CN 101654302B CN 2009101960163 A CN2009101960163 A CN 2009101960163A CN 200910196016 A CN200910196016 A CN 200910196016A CN 101654302 B CN101654302 B CN 101654302B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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Abstract
The invention relates to a method for removing algae in water by using earthworms, in particular to a water body algae removing method, which comprises the following steps: pumping algae-contained water with algae density lower than 10<8>/L into an algae idling tank for 2-3 days to lead the algae in the water to be decayed for increasing the palatability of the earthworm to the algae; constructing an earthworm bacteria filter and inoculating the earthworms, filling 3-5mm ceramicites in the filter, uniformly inoculating the earthworms according to the volume density of 10<11> algae per (kg earthworms.d) into the filter, uniformly arranging holes on a bottom plate of the filter, leading the algae-contained water body to flow through the successfully domesticated earthworms among the ceramicites from a water distributor at the top end of the filter, decomposing the algae into self nutrition and microorganism nutrition by using the characteristic of like eating the decayed plant pieces, and leading discharged water to flow into a sedimentation basin from the holes at the bottom of the filter. The invention has simple process, convenient management, no secondary pollution, low cost and operation cost, and good water discharging effect, and can be widely applied to removing the algae in the water body.
Description
Technical field
Utilize earthworm to remove the method for algae in the water body, relate to a kind of water body algae-removing method.Concrete algae of adopting in the Worm biological filter tank processing water body.
Technical background
Through years development, existing at present multiple algae removal technology is applied to practice.Existing algae removal technology mainly is divided into mechanical algae removal technology, chemical algae removing technology and biology algae removal technology.
The machinery algae removal technology is to utilize physics methods such as microbe filter, sound wave, various ray, ultraviolet ray, electronics line, electric field, air supporting, and algae is killed or the inhibition technology.Be used for the control of algae and water and kill as equipment such as domestic useful high-frequency electronic industry magnetizing equipment, electronic processors.Physical processing apparatus is simple relatively, attended operation is simple, the life-span is long, working cost is lower, environment is not produced pollution, but shortcoming is the energy consumption height, and equipment purchasing and running cost are big.
The chemical algae removing technology is that use both at home and abroad at present at most, also is the most sophisticated algae technology of killing.Because of its development history is longer, technology is relatively perfect.This class technology is to utilize chemical agent that algae is removed extremely.Synthetic and that filter out at present algicide has: organism such as rosin amine, three azine derivatives, organic acid, aldehyde, ketone, the inorganicss such as precipitation agent of mantoquita (copper sulfate, cupric oxide), potassium permanganate, phosphorus.Wherein most widely used is copper sulfate, makes synergistic agent with molysite, aluminium salt, and that can improve copper sulfate removes the algae effect.The major advantage of chemical method is easy and simple to handle, and disposable use cost is low, and shortcoming is environment to be produced pollute.
Biological algae removal technology is to utilize the inhibition such as the algae pathogenic bacteria of the predator of algae such as protozoon, algal grown or utilize the oxygenolysis of microorganism to kill algae.Use these biological control algaes, can as nutritive salt control and " bio operon ", not produce basic change to lake ecosystem, but its shortcoming is only to be adapted at the wawter bloom early period of origination to use, can control the algae bio amount in a short time or stop algal bloom, and for the eutrophication water treatment effect is not good.
The traditional technology of many water treatments also is used to the removal of algae, as MBBR, ceramic aggregate biological filter tank, ozone-bioactive carbon technology, the aeration that pumps up water/biological contact oxidation metallization processes etc., the algae mechanism of removing of these technologies and reactor depends on following several effect more: biomembranous absorption, adhere to, the oxygenolysis of microorganism, the biofloculation of filler and mechanical retention, protozoic predation, biomembranous biofloculation, precipitation come off.Belong to machinery and remove algae and the biological category that combines except that algae.These technologies have the secondary pollution of not producing, and can reach having a few of good effect of removing at amount of algae, but its shortcoming are the water bodys for a large amount of propagation of algae more after a little while, and device stops up, the shortcoming of poor processing effect to use these technologies easily to induce reaction.
Worm biological filter tank (VBF) is to be designed in nineteen ninety-five by French agricultural sciences academician soil animal ecologist the earliest, is used for sewage disposal the earliest, and it is to introduce the organic decomposition processing layer that includes specific earthworm kind on the basis of ordinary biofilter.Because earthworm has the organic substance of eating, it is (permeable to improve soil permeability, ventilation) and with microorganism synergy promote the ecological functions such as degraded of organic substance, therefore, can improve the voidage of filtrate, promote degradation of organic matter in the sewage, and remove the latch up phenomenon that may occur in the filter tank, thereby improve the processing power and the processing efficiency in filter tank.The introducing that earthworm is filtered decomposition layer has not only improved the disaggregating treatment efficient of organic pollutant in the sewage, but also has overcome ordinary biofilter this important disadvantages of easy obstruction in service.
Find through literature search prior art, existing dispose of sewage and the technology of mud with Worm biological filter tank, as Chinese patent application number 2001/00115433.8, patent name is: the physiological microbe-earthworm filter pool system for treating household of sanitary sewage, this patent readme is: adopt to meet the ecological physiological microbe-earthworm filter tank that food chain connects of forming, the entire sewage treatment system is simplified than prior art under the equal area load, and has produced better environmental effect and treatment effect.China Patent No. 200810042365.5, patent name is: the method for utilizing Worm biological filter tank to handle excess sludge of town sewage plant then is the representative that Worm biological filter tank is used for the sludge treatment technology.The present invention utilizes earthworm that algae and the biomembranous characteristic of ingesting are removed algae.At present there is not Worm biological filter tank to be applied to the report or the message of algae removal aspect as yet.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of technology, and processing cost is cheap, can directly handle the treatment process of the algae in the water body, has obtained good effect of removing through algae in the landscape water body water outlet behind the present invention.
Ecology thinks that system's food chain is long more, and power loss is just many more, and it is just few more to can be used for organism synthetic energy.The present invention adopts the modern ecological design concept, prolong and expanded the microbial metabolism chain of ordinary biofilter, in the biological filter, introduce Eisenia foetida, by the enrichment of the artificial-strengthening ecosystem and diffusion, synthetic and decomposition, antagonism and multiple natural regulating and controlling effect such as work in coordination with, under the synergy of earthworm and microorganism, by control water inlet condition, make the algae concentration of water outlet reduce greatly.In this system, microorganism forms microbial film on the filtering material particle surface, algae is carried out oxygenolysis, and the earthworm in the filter bed can algae be a foodstuff both, the microbial film of eating again simultaneously, utilize the digestive ferment system that self enriches that algae is decomposed rapidly, change into self and nutritive substance and a spot of movement that the other biological amount is easy to utilize, reach the effect that algae is removed.
Concrete implementation step is as follows:
The first step, the algae pre-treatment
With idle 2-3 day of water containing algae body, algae presents septic state to the water, to strengthen the palatability of earthworm to algae; The algae density of control algae-containing water body is 10
8In individual/L.
In second step, build biological filter and inoculation earthworm
As Worm biological filter tank, this filter tank is divided into cloth pool, three parts in packing area and drained zone with the traditional biological filter tank.Be provided with the continuous water distribution of water distributor in the cloth pool.Filler is distinguished one deck: be the little haydite of 3-5mm, at the filling haydite simultaneously, earthworm evenly be seeded in the haydite that the earthworm that the filter tank adds is an Eisenia foetida, it is by 10 that the filter tank initially adds earthworm
11Individual algae/(kg earthworm d) carries out, every heavily about 0.3g of earthworm; Packing area base plate perforate, hole is evenly distributed, and the aperture is 2mm, and the algae-containing water body is flowed through and is gone out stream by hole behind the packing area, enters the settling tank of below, filter tank.
In the 3rd step, Worm biological filter tank is tamed
According to the effluent quality situation, the water inlet hydraulic load can be by 2m
3/ (m
2Filtrate d) progressively rises to 5m
3/ (m
2Filtrate d), water is pumped into the Worm biological filter tank that second step made up, observe earthworm escape situation around the filter tank after 30-40 days, earthworm escaping phenomena disappearance explanation earthworm has adapted to the filter tank environment and the foodstuff of giving.
The 4th step is with the algae in the Worm biological filter tank processing water body
After the Worm biological filter tank domestication finishes, the first step is carried out pretreated water containing algae body and function peristaltic pump continuously to the Worm biological filter tank water distribution, algae is digested under the earthworm effect.Water outlet is measured, and algae chlorophyll a clearance is 60%-80%.
Advantage of the present invention is as follows:
1. owing to introduced earthworm in the Worm biological filter tank, prolong and expanded original microbial metabolism chain in the filter tank, promote the degraded of algae with the microorganism synergy in the filter tank, by the control of hydraulic load etc., reach the effect of high algae removal rate fast.Therefore it is simple to have technical process, the tangible characteristics of treatment effect.
2. compare with the existing mechanical algae removal technology, facility investment and working cost are low, operational management requires low; Compare with the chemical algae removing technology, have the advantage of the secondary pollution of not producing; Compare with biological algae removal technology, have the advantage good the water body treatment effect of high algae concentration.
3, because the activity of earthworm in the filter tank make that the hole between the filtrate is not easy to be stopped up by the algae residue, so Worm biological filter tank can be worked continuously for a long time.
4. main current consuming apparatus only is an inlet water lifting pumps, multiple natural regulating and controlling effect such as give full play to artificial ecosystem enrichment such as earthworm and diffusion, synthetic and decomposition, antagonism and work in coordination with, therefore compare with mechanical algae-removing technology, energy conversion rate and resource utilization height are arranged, can save advantages such as energy consumption significantly.
5. the earthworm excrement of Chan Shenging is a kind of nutritious crumb structure, is good soil improvement agent.
Description of drawings
Fig. 1 is a process flow sheet of the present invention
Embodiment
Embodiment 1
See also Fig. 1.The first step, the algae pre-treatment.With idle 2 days of water containing algae body, algae presented rotten state to the water body, to strengthen the palatability of earthworm to algae.The algae density of control algae-containing water body is 10
8In individual/L.
In second step, build Worm biological filter tank and inoculation earthworm.Advance Tongji University's three good depressed place landscape water bodies, recording water body chlorophyll concentration is that VSS is about 19mg/L about 40 μ g/L water.Flooding velocity is 0.16m
3/ d.Worm biological filter tank adopts open cylindric filter tank, can form natural ventilation.Filter tank diameter 30cm, total height is 40cm, and top 10cm is the cloth pool, is provided with traditional water distributor in the cloth pool, carries out continuous water distribution, and below, cloth pool is the packing area, and virtual height is 30cm, adopting diameter is the little haydite of 3-5mm, can increase algae and hold back area.Selected haydite is that Quanxing, Jiangxi Province chemical filler company limited produces, it is the spherical haydite of shale lightweight, material is light, and hardness is big, weather resistance, water-fast erosion, and its surface irregularity, microvoid structure is abundant, and specific surface area is big, high adsorption capacity, be fit to microorganism growth, its physics, chemical property all are applicable to this filter tank.The earthworm that the filter tank adds is an Eisenia foetida, Lumbricidae, and Eisenia is commonly called as bloodworm, belongs to excrement earthworm class, and is individual less, the long 40-150mm of body, the wide 3-5mm of body, body segment 80-110 joint.Body colour is various, and red, purple, dark red, incarnadine etc. is arranged, and mostly is red-purple.The filter tank initially adds about 200 of earthworm.The Worm biological filter tank bottom is the drained zone, perforate on the dividing plate of filter tank, and hole is evenly distributed, and the aperture is 2mm, and the algae-containing water body is flowed through the packing area after hole flows out, and enters the settling tank of below, filter tank.
In the 3rd step, Worm biological filter tank starts and domestication.The one month of initial launch is a domestication, and according to the effluent quality situation, the water inlet hydraulic load is by 2m
3/ (m
2Filtrate d) rises to 5m
3/ (m
2Filtrate d), water is progressively pumped into the Worm biological filter tank that second step made up, observe earthworm escape situation around the filter tank after 30-40 days, earthworm escaping phenomena disappearance explanation earthworm has adapted to the filter tank environment and the foodstuff of giving, the continuous water distribution of reactor, the chlorophyll clearance of surveying is 60%-80%.
The 4th step is with the algae in the Worm biological filter tank processing water body.The first step is carried out pretreated water containing algae body and function peristaltic pump continuously to the Worm biological filter tank water distribution, and algae is digested under the earthworm effect.Water outlet is measured, and algae chlorophyll a clearance is 60%-80%.
Claims (1)
1. utilize earthworm to remove the method for algae in the water body, it is characterized in that:
The first step, the algae pre-treatment
Algae density is lower than 10
8The algae-containing water of individual/L water pumps in the idle pond of algae, idle 2-3 day, makes that algae reaches septic state in the water, to strengthen the palatability of earthworm to algae;
In second step, make up Worm biological filter tank and inoculation earthworm
Worm biological filter tank is divided into cloth pool, packing area and drained zone three parts from top to bottom; Cloth is provided with water distributor in the pool, so that cloth spills algae-containing water continuously; The bottom, packing area is provided with the filter tank dividing plate fixed with the pool wall of Worm biological filter tank, perforate on the dividing plate of filter tank, and hole is evenly distributed, and the aperture is 2mm; Packing area filling diameter is the 3-5mm haydite, highly is 30-50cm, and the filter tank dividing plate is the drained zone down; It is settling tank that there are rising pipe, bottom in the middle part, drained zone;
In the filling haydite, earthworm evenly is seeded in the haydite, the earthworm inoculum density is by 10
11Individual algae/(kg earthworm d), earthworm is an Eisenia foetida, every heavily about 0.3g of earthworm;
In the 3rd step, the earthworm in the Worm biological filter tank is tamed
According to the effluent quality situation, the water inlet hydraulic load is by 2m
3/ (m
2Filtrate d) progressively rises to 5m
3/ (m
2Filtrate d); Water is pumped into second go on foot the Worm biological filter tank that makes up, observe the situation of Worm biological filter tank earthworm escape on every side after 30-40 days, earthworm escaping phenomena disappearance explanation earthworm has progressively adapted to the filter tank environment;
In the 4th step, handle the algae-containing water body with Worm biological filter tank
After the Worm biological filter tank domestication finishes, the pretreated algae-containing water body and function of the first step pump is advanced water to Worm biological filter tank continuously; When the algae-containing water body is flowed through filtrate, algae in the water is eaten by earthworm, flow out by the hole on the dividing plate of filter tank again, enter the settling tank of below, filter tank, through the aquametry that goes out to settling tank, the clearance of chlorophyll a reaches 60%-80%, and the mud of settling tank bottom obtains the strong soil improvement agent of fertilizer efficiency with the coexistence of earthworm excrement after dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101960163A CN101654302B (en) | 2009-09-21 | 2009-09-21 | Method for removing algae in water by using earthworms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101960163A CN101654302B (en) | 2009-09-21 | 2009-09-21 | Method for removing algae in water by using earthworms |
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| Publication Number | Publication Date |
|---|---|
| CN101654302A CN101654302A (en) | 2010-02-24 |
| CN101654302B true CN101654302B (en) | 2011-05-25 |
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|---|---|---|---|
| CN2009101960163A Expired - Fee Related CN101654302B (en) | 2009-09-21 | 2009-09-21 | Method for removing algae in water by using earthworms |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674555B (en) * | 2012-05-07 | 2013-07-17 | 同济大学 | Wood filler earthworm biofilter and method for processing town residue sludge |
| CN103789199B (en) * | 2014-03-12 | 2015-08-19 | 湖北工业大学 | A kind of continuous reaping apparatus of micro-algae and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3635816A (en) * | 1969-08-12 | 1972-01-18 | Gerald Golub | Method of purifying citrus plant effluent and raising worms and fish |
| CN1843978A (en) * | 2006-04-20 | 2006-10-11 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
| CN101182076A (en) * | 2007-11-29 | 2008-05-21 | 上海交通大学 | Method for treating industrial wastewater by employing worm biological filter tank |
-
2009
- 2009-09-21 CN CN2009101960163A patent/CN101654302B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3635816A (en) * | 1969-08-12 | 1972-01-18 | Gerald Golub | Method of purifying citrus plant effluent and raising worms and fish |
| CN1843978A (en) * | 2006-04-20 | 2006-10-11 | 上海交通大学 | Method for preparing filtration material for earthworm biofilter |
| CN101182076A (en) * | 2007-11-29 | 2008-05-21 | 上海交通大学 | Method for treating industrial wastewater by employing worm biological filter tank |
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|---|---|
| CN101654302A (en) | 2010-02-24 |
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Granted publication date: 20110525 Termination date: 20130921 |