CN112499896A - Method for restoring closed landscape water body by combining ammonium vanadium and aquatic animals and plants - Google Patents
Method for restoring closed landscape water body by combining ammonium vanadium and aquatic animals and plants Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 244
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 title claims abstract description 127
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- 239000002253 acid Substances 0.000 description 1
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- 239000003513 alkali Substances 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
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- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
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- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Farming Of Fish And Shellfish (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants. The method comprises the following steps: s1) establishing an ecological cycle system; s2) purifying the water body: removing aquatic animals and plants which destroy ecological balance, adding anhydrous ammonium vanadium into the water body of the ecological circulating system, and adjusting the pH value of the water body to 5-7.5 to enable the water body to be clear; s3) periodically adding anhydrous ammonium vanadium to assist the ecological circulation system in establishing the pH value self-repairing capability of the water body: and when the pH value of the water body is higher than 7.5 or the water body is turbid, adding anhydrous ammonium vanadium to adjust the pH value and assisting the ecological circulating system to restore the pH value of the water body. The method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants can assist the ecological circulating system to gradually establish the self-restoration capability of the water body, and has the advantages of purifying the water body, isolating endogenous pollution and improving the economic benefit of the ecological circulating system.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants.
Background
The closed landscape water body refers to the closed water body which is not connected with the external water body, such as the green land, the park, the building area and the like of the city.
With the improvement of the requirements of people on living environment, a large number of closed landscapes are built in China. However, the water body in the closed landscape has the defects of low environmental capacity, poor self-cleaning capability and easy influence by human activities, and easily causes excessive pollutants such as COD, BOD, TN, TP and the like, too fast growth speed of algae, muddy water body with peculiar smell and easy discomfortable appearance to lose the landscape function.
Common restoration methods for closed landscape water bodies in the prior art are divided into the following categories:
(1) a physical repair method. The physical method adopts the steps of removing bottom mud, covering the bottom mud, replacing water, aerating and the like, and is a conventional treatment method for purifying and sealing the landscape water. But the investment cost is high, the maintenance cost is high, the energy consumption is large, and the components of pollutants are not controlled, so that the method is a method for treating symptoms and root causes.
(2) Chemical methods. The chemical agent is put in, so that suspended matters in the landscape water body can be settled and sealed, algae can be killed, the effect is fast, and the initial effect is very good. However, with the emergence of drug-resistant algae, chemical agents need to be frequently changed, the dosage is increased continuously, the treatment cost is high, and secondary pollution is caused.
(3) An aquatic animal and plant or microorganism repairing method. Based on biological and ecological theories, the method improves the living environment of aquatic organisms, optimizes aquatic organism communities, improves the self-cleaning capacity of an aquatic ecosystem, maintains the stable and healthy development of the aquatic ecosystem, and is an effective way for treating eutrophicated closed landscape water.
(4) The biological ecological technology restoring method is a new technology for treating closed landscape water body, overcomes the defects of physical and chemical methods, and has shown the application prospect of restoring closed landscape water body.
The physical repair method has high investment cost, high maintenance cost and large energy consumption, does not control the components of pollutants, and is a method for treating symptoms and root causes.
The chemical method needs to change chemical agents frequently along with the emergence of drug-resistant algae, and the dosage is increased continuously, the treatment cost is high, and secondary pollution is caused.
The aquatic animal and plant and microbe repairing method and the biological ecological technology repairing method have excellent repairing and balancing effect.
However, the repairing method in the prior art cannot perform rapid or autonomous repairing under the influence of severe weather or disastrous weather, is in a passive repairing state, has a long repairing balance period, and even has repairing failure.
The bottom mud of the closed landscape water body has N, P, S dynamic dissolution balance with heavy metals and the like, and when the concentration of nutrient substances in the water body is low, the substances in the bottom mud are released, so that the secondary pollution of the water body is caused. The restoration method in the prior art is easy to damage the underwater ecosystem, difficult to ensure the durability of the effect and greatly influenced by wind waves and water flow disturbance.
Therefore, the method controls the release of the bottom mud to control the secondary pollution of the water body, solves the influence of wind waves and water flow disturbance in severe weather or disastrous weather to repair and close the landscape water body in time, and has important significance.
Disclosure of Invention
The invention provides a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants comprises the following steps: s1), establishing an ecological circulating system, wherein the ecological circulating system comprises a closed water body, aquatic plants and aquatic animals, cleaning unsuitable original aquatic plants of the closed landscape water body to be restored, transplanting suitable aquatic plants, and putting the aquatic animals suitable for the environmental requirements;
s2) purifying the water body: removing impurities, dead or rotten animal and plant bodies and aquatic animals and plants destroying ecological balance, adding anhydrous ammonium vanadium into the water body of the ecological circulating system, and adjusting the pH value of the water body to 5-7.5 to enable the water body to be clear;
s3) periodically adding anhydrous ammonium vanadium to assist the ecological circulation system in establishing the pH value self-repairing capability of the water body: and when the pH value of the water body is higher than 7.5 or the water body is turbid, adding anhydrous ammonium vanadium to adjust the pH value to be 5-7.5 to assist in restoring the ecological circulation system.
Preferably, the method further comprises the following steps:
s4) when the pH value of the water body of the ecological cycle system is lower than 5 or the anhydrous ammonium vanadium is added excessively, adding calcium hydroxide to neutralize acidity, adjusting the pH value of the ecological cycle system to 5-7.5, and generating calcium sulfate precipitate to cover the surface of the bottom mud.
Preferably, the method further comprises the following steps:
s5) when the ecological circulation system is unbalanced or the water body becomes turbid due to the influence of environmental factors, actively adding anhydrous ammonium vanadium to forcibly purify the water body and assist the ecological circulation system to establish new balance.
4. The method for restoring the closed landscape water body combined by ammonium vanadium and aquatic animals and plants according to claim 2, further comprising the following steps:
s6) when the water body definition of the ecological cycle system is gradually increased and the interval of the turbid period is continuously prolonged, the use frequency of the anhydrous ammonium vanadium is gradually reduced.
Preferably, in steps S2 and S3, the pH value of the water body of the ecological cycle system is in the range of 5.5-7.
Preferably, in steps S2 and S5, 0.1g/L of anhydrous ammonium vanadium is added into the water body of the ecological cycle system according to the mass concentration.
Preferably, the use frequency of the anhydrous ammonium vanadium is as follows: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks; then, the treatment is carried out once every two weeks, and the treatment is changed to once every four weeks until the turbidity is not caused after more than two weeks after the anhydrous ammonium vanadium is added; and stopping adding the anhydrous ammonium vanadium until the anhydrous ammonium vanadium is kept clear for more than four weeks after the anhydrous ammonium vanadium is added.
Further, the specific operation for assisting the ecological circulation system to establish the pH value autonomous restoration capability of the water body is as follows:
1) selecting a closed landscape water body to be treated, and thoroughly removing unsuitable aquatic animals and plants in the closed landscape water body to be restored;
2) transplanting local aquatic plants suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during the culture period according to the mass concentration, controlling the pH value of the water body to be 5.5-7, purifying the water body to kill algae, and adding the anhydrous ammonium vanadium at the frequency of: once per week;
3) throwing local aquatic animals suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during feeding according to mass concentration calculation, controlling the pH value of the water body to be 5.5-7, keeping the periodic definition of the water body, and adding the anhydrous ammonium vanadium at the frequency: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks;
4) adding 0.1g/L of anhydrous ammonium vanadium according to the mass concentration, controlling the pH value of the water body to be 5.5-7, observing the growth condition of a passivation coating film of the sediment of the landscape water body to be sealed, and when an obvious white aluminum hydroxide passivation film layer appears on the surface of the sediment, namely the passivation film layer achieves the effect of isolating endogenous pollution of the sediment;
5) when the time for maintaining the water clarity exceeds more than one week, the addition frequency of the anhydrous ammonium vanadium can be reduced to once every two weeks; and adjusting the adding frequency of the anhydrous ammonium vanadium once every four weeks, and stopping adding the anhydrous ammonium vanadium to adjust the water body when no water body is turbid in the four weeks, wherein the closed landscape water body, the local aquatic plants and the local aquatic animals reach balance preliminarily, namely the ecological circulation system establishes the pH value self-restoration capability of the water body.
The invention has the beneficial effects that: the method for restoring the closed landscape water body by combining ammonium vanadium and aquatic animals and plants adjusts the pH value of the closed landscape water body by adding anhydrous ammonium vanadium, and cultivates the aquatic animals and plants of the closed landscape water body while adjusting to establish an ecological cycle system and the self-restoration capability of the water body.
The method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants has the advantages of obvious effect, low cost, environmental protection, no secondary pollution, effects of abnormal influences of weather, rainwater or blue algae outbreak and the like, and wide application range.
Drawings
FIG. 1 is a diagram showing the effect of a white aluminum hydroxide colloidal passivation film covering the bottom sediment surface of a closed landscape water body according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the effect of the aquatic animals and plants of the enclosed landscape water body of FIG. 1 in establishing an ecological cycle system and the autonomous remediation capability of the water body.
Detailed Description
The technical solution of the present invention is further described below with reference to the specific embodiments of fig. 1-2.
A method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants comprises the following steps:
s1), establishing an ecological circulating system, wherein the ecological circulating system comprises a closed water body, aquatic plants and aquatic animals, cleaning unsuitable original aquatic plants of the closed landscape water body to be restored, transplanting suitable aquatic plants, and putting the aquatic animals suitable for the environmental requirements;
s2) purifying the water body: removing impurities, dead or rotten animal and plant bodies and aquatic animals and plants destroying ecological balance, adding anhydrous ammonium vanadium into the water body of the ecological circulating system, and adjusting the pH value of the water body to 5-7.5 to enable the water body to be clear; s3) periodically adding anhydrous ammonium vanadium to assist the ecological circulation system in establishing the pH value self-repairing capability of the water body: and when the pH value of the water body is higher than 7.5 or the water body is turbid, adding anhydrous ammonium vanadium to adjust the pH value to be 5-7.5 to assist in restoring the ecological circulation system.
The chemical name of the anhydrous ammonium vanadium is aluminum ammonium sulfate, formula NH4Al(SO4)2The appearance is colorless, transparent crystal or white powder, the crystal is slightly soluble in water, and the aqueous solution is weakly acidic.
The aluminum ammonium sulfate is used for processing fermentation powder, fried food, jellyfish pickling, vermicelli processing, fruit and vegetable fresh keeping and crisp keeping, color protection, water purification and environmental protection, disinfection, rubber processing, tanning, washing powder processing, feed processing, pencil manufacturing and the like.
The aluminum ammonium sulfate can be used as food additive, has no toxicity and harm to animals and plants, can be borne by animals and plants in the acid-base range, has strong water purification capability, can kill algae, and takes hydrolysate flocculent aluminum hydroxide as an inorganic substance.
According to the national water discharge standard, the ammonia nitrogen is controlled to be below 10mg/L, and the water body purified by using the ammonium vanadium is limited to a closed water body which is not discharged outside, so that the method is particularly suitable for closing landscape water bodies, such as similar citizen park lakes of the former palace city protection river, the Yuanming garden Fuhai, the Guangzhou floribunda lake and the like. Therefore, the method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants selects the closed landscape water body as a restoration object.
In the existing closed landscape water body, some aquatic animals and plants are not suitable for local climate and closed water body environment, so that behaviors and growth modes for destroying the ecology of the closed landscape water body are formed, and even the aquatic animals and plants have aggressive or explosive growth such as some algae and foreign species, for example, the aquatic animals and plants are not cleaned, and the ecological balance of the closed landscape water body to be restored can not be maintained. Therefore, the unsuitable original aquatic plants of the closed landscape water body to be restored need to be cleaned, suitable aquatic plants are transplanted, and the aquatic animals meeting the environmental requirements are thrown in.
The invention relates to a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants, which has the following chemical principle of water purification: the ammonium vanadium is ionized to generate aluminum ions which are uniformly distributed in the whole water body, the aluminum ions are hydrolyzed to generate aluminum hydroxide colloid with adsorbability, the aluminum hydroxide gradually flocculates suspended matters or algae in the water body and is gathered and settled on the surface of bottom mud, an even aluminum hydroxide colloid passivation layer is formed on the surface of the bottom mud, the bottom mud is completely covered, and the bottom mud is isolated from N, P, S of the water body and the substance exchange of pollutants such as heavy metals.
The aluminum hydroxide colloid is used for precipitating suspended matters and flocculating algae, so that the water body definition is improved; the ammonium ions are utilized to nourish aquatic plants, strengthen landscape effect, improve the growth capacity and output capacity of animals and plants of the ecological cycle system, and increase economic benefit.
Specifically, the method for restoring the closed landscape water body by combining ammonium vanadium and aquatic animals and plants comprises the following steps:
step S1, firstly, constructing an ecological cycle system which comprises a closed landscape water body, native aquatic plants and native aquatic animals and can be matched and adapted with each other; the aquatic plants are used for absorbing nutrient components and heavy metals in the bottom mud of the closed landscape water body, oxygen and oxygen are supplemented to the bottom mud, and the water body is repaired; the aquatic animals are used for controlling and consuming the aquatic plants, and the excrement of the aquatic animals can nourish the aquatic plants to form an ecological circulation system;
the ecological circulation system consumes nutrient substances internally, restores water, outputs aquatic plants and aquatic animals externally and can also generate economic benefit.
And step S2, adding anhydrous ammonium vanadium into the water body of the ecological cycle system, purifying the water body, and covering bottom mud to isolate endogenous pollution. After the ammonium vanadium is dissolved in water, the following reaction occurs:
1. ionization of ammonium vanadium to produce aluminum ion
NH4Al(S04)2=NH4 ++A13++2SO4 2- (1)
2. Hydrolyzing aluminum ion to generate adsorptive aluminum hydroxide colloid
Al3++3H20=Al(OH)3(colloid) ↓ +3H+ (2)
After the aluminum ions are hydrolyzed, the pH value of the solution is reduced, after the addition is stopped for a period of time, the pH value can return to more than 6.0, and the formula (2) is a reversible reaction.
The aluminum hydroxide colloid has positive charges, adsorbs suspended particles, blue algae and the like with negative charges in water, and is precipitated together with adsorbed substances to form an aluminum hydroxide colloid layer which is uniformly covered on the surface of the bottom mud.
N, P, S and heavy metals released by the bottom mud to the water body can deteriorate the water body; the aquatic animals stir the sediment to reduce the definition of the water body. The adoption of manual removal or covering of the sediment has huge cost, difficult thorough control of endogenous pollution of the sediment and limited effect.
The aluminum hydroxide colloid generated by the chemical method is adopted to completely cover the bottom mud of the closed landscape water body, so that the period for keeping the water body clear can be greatly prolonged, and the cost for manually removing or covering the bottom mud is reduced.
The aluminum hydroxide colloid is an inorganic substance, cannot be decomposed by bacteria and can be kept for covering for a long time; the aluminum hydroxide colloid flocculate has certain chemical binding force among molecules, and a formed passivation covering layer is not easily stirred by fish schools and is beneficial to keeping the definition of a water body.
In step S3, since carbon dioxide is generated by the activity and respiration of animals and plants in the water, the pH and clarity of the water are affected by the secretion and excretion, and the pH changes continuously every day in an ecosystem without self-repairing and balancing ability. If the pH value is not adjusted to be proper in time, the growth and the survival of the ecological cycle system can be influenced. When the pH value of the water body is more than 7.5, the anhydrous ammonium vanadium can be repeatedly added according to a proper molar concentration, the pH value of the water body is reduced to about 5 by adding the anhydrous ammonium vanadium, the pH value of the water body can be increased due to the life activities of animals and plants in the water body after the addition of the anhydrous ammonium vanadium, and the ecological circulation system is assisted to gradually establish the self-repairing balance capability of the water body by periodically adding the anhydrous ammonium vanadium.
The method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants can assist the ecological circulation system to gradually establish the self-restoration capability of the water body. The method also has the following beneficial effects:
1. purifying the water body. According to the formula (2), the hydrolyzed aluminum hydroxide colloid adsorbs suspended matters and algae, and is settled to bottom mud and is used for strongly purifying water;
2. isolating endogenous pollution. According to the formula (2), the hydrolyzed aluminum hydroxide colloid flocculate uniformly and comprehensively covers the surface of the bottom sediment to form a passivation layer, so that the pollutant exchange between the water body and the bottom sediment is effectively prevented, and the endogenous pollution is isolated;
3. the fertilizer is provided for aquatic plants in the system, and an autonomous balanced food chain is established in the system. According to the formula (1), ammonium ions are ionized by ammonium vanadium, and belong to ammonia nitrogen pollution exceeding the standard for public water, but are nutrient fertilizers required by aquatic plants for closed landscape water body planted with the aquatic plants, and the aquatic plants strengthened by fertilization can further strengthen the self-circulation balance capability of an ecological circulation system.
4. The self-repairing capability of the ecological cycle system is improved, and economic benefits are generated. The aluminum hydroxide colloid is used for precipitating suspended matters and flocculating algae, so that the water body definition is improved; the ammonium ions are used for nourishing the aquatic plants and strengthening the landscape effect, the growth capacity and the output capacity of the animals and the plants of the ecological cycle system are improved, the autonomous balance is gradually achieved, the autonomous restoration capacity is obtained, and further the economic benefit is increased.
Preferably, the method further comprises the following steps:
s4) when the pH value of the water body of the ecological cycle system is lower than 5 or the anhydrous ammonium vanadium is added excessively, adding calcium hydroxide to neutralize acidity, adjusting the pH value of the ecological cycle system to 5-7.5, and generating calcium sulfate precipitate to cover the surface of the bottom mud.
When the pH value is lower than 5 and the acidity is too high, the oxygen content in water is low, the aquatic animals and plants are easy to generate an oxygen deficiency phenomenon, and the aquatic animals and plants are difficult to breathe and are easy to die; therefore, when the pH value of the water body of the ecological cycle system is found to be lower than 5, calcium hydroxide is rapidly added, and the pH value is adjusted to be about 7.0, so as to protect animals and plants in the water body.
The acidity of the ammonium vanadium can be neutralized by adding calcium hydroxide, and the sulfate radical is consumed, and the chemical reaction formula is as follows
2Ca(OH)2+2SO4 2-=2CaSO4↓+H2O+O2 (3)
The generated calcium sulfate precipitate covers the surface of the bottom mud, and the antifouling and isolating effects on the bottom mud can be enhanced.
Preferably, the method further comprises the following steps:
s5) when the ecological circulation system is unbalanced or the water body becomes turbid due to the influence of environmental factors, actively adding anhydrous ammonium vanadium to forcibly purify the water body and assist the ecological circulation system to establish new balance.
When the polluted materials are cleaned under the influence of environmental factors such as climate, rainwater or blue algae outbreak, the closed landscape water body is restored only by the water body, the aquatic plant and aquatic animal symbiotic system, the definition is limited, the time is long, and a plurality of aquatic plants and aquatic animals die in the period.
By actively adding anhydrous ammonium vanadium, the pH value of the water body of the ecological circulating system can be quickly restored to a normal range value, the death of aquatic animals and plants can be reduced, and the ecological circulating system is assisted to establish new balance.
The blue algae forms air bags to float out of the water surface and rapidly propagate under the conditions of high pH value, strong illuminance and long time of the water body at the temperature of more than 20 ℃, so that the phenomenon of blue algae bloom is formed. The cyanobacterial bloom mostly occurs in summer for 6-9 months, has obvious seasonality and is influenced by temperature, sunlight and nutrient substances.
The mass propagation of blue algae deteriorates ventilation and illumination in water, causes oxygen deficiency in the growth and propagation of aquatic organisms, hinders the photosynthesis of algae, reduces the living space of aquatic animals and plants, and easily causes mass death of the aquatic animals and plants.
Preferably, the method further comprises the following steps:
s6) when the water body definition of the ecological cycle system is gradually increased and the interval of the turbid period is continuously prolonged, the use frequency of the anhydrous ammonium vanadium is gradually reduced.
The aluminum hydroxide colloid is an inorganic substance, cannot be decomposed by bacteria and can be covered for a long time; along with the increase of the frequency of adding anhydrous ammonium vanadium into the water body for maintaining, the passivation film layer of the covered aluminum hydroxide gradually thickens, the retention time of the water body definition is gradually prolonged, the aquatic animals and plants of the ecological cycle system and the water body have the autonomous balance capability, and the adding amount or adding frequency of the ammonium vanadium can be gradually reduced.
Preferably, in steps S2 and S3, the pH value of the water body of the ecological cycle system is in the range of 5.5-7.
When the pH value is lower than 5, the oxygen content in water is low when the acidity is too high, the aquatic animals and plants are easy to generate an oxygen deficiency phenomenon, and the aquatic animals and plants are difficult to breathe and are easy to die; the photosynthesis of the aquatic plants and the pH value of the microorganisms are suitable to be 5-7.5, the alkali can form insoluble tricalcium phosphate, and the acid can form insoluble iron phosphate and aluminum phosphate to influence the fertilizer efficiency and the growth of the aquatic plants. Therefore, the pH value of the water body is set to be 5.5-7, which is safer and more suitable.
Preferably, in steps S2 and S5, 0.1g/L of anhydrous ammonium vanadium is added into the water body of the ecological cycle system according to the mass concentration.
When the concentration of the ammonium vanadium is 0.05mol/L, namely 11.85g/L, the pH value of the aqueous solution of the ammonium vanadium is 4.6 and less than 5, and the acidity is higher than the tolerance range of aquatic animals and plants; therefore, in order to protect the ecological cycle system and reduce the interference and harm of chemical substances with excessively high acidity, the adding amount of 0.1g/L of anhydrous ammonium vanadium is adopted, so that the aquatic animals and plants of the ecological cycle system are milder and safer.
Preferably, the use frequency of the anhydrous ammonium vanadium is as follows: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks; then, the treatment is carried out once every two weeks, and the treatment is changed to once every four weeks until the turbidity is not caused after more than two weeks after the anhydrous ammonium vanadium is added; and stopping adding the anhydrous ammonium vanadium until the anhydrous ammonium vanadium is kept clear for more than four weeks after the anhydrous ammonium vanadium is added.
According to the method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants, the pH value of the water body of the ecological circulating system is adjusted by adding the anhydrous ammonium vanadium, the water body has periodic definition, the passivation film layer of the covered aluminum hydroxide gradually thickens with the increase of the frequency of adding the anhydrous ammonium vanadium in the water body, the time period for keeping the definition of the water body is gradually prolonged, the adding amount of the anhydrous ammonium vanadium is gradually reduced, the pH value of the water body can be maintained within a proper range, and meanwhile, the ecological circulating system is cultured to establish the self-restoration capability of the water body.
Further, the specific operation for assisting the ecological circulation system to establish the pH value autonomous restoration capability of the water body is as follows:
1) selecting a closed landscape water body to be treated, and thoroughly removing unsuitable aquatic animals and plants in the closed landscape water body to be restored;
2) transplanting local aquatic plants suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during the culture period according to the mass concentration, controlling the pH value of the water body to be 5.5-7, purifying the water body to kill algae, and adding the anhydrous ammonium vanadium at the frequency of: once per week;
3) throwing local aquatic animals suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during feeding according to mass concentration calculation, controlling the pH value of the water body to be 5.5-7, keeping the periodic definition of the water body, and adding the anhydrous ammonium vanadium at the frequency: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks;
4) adding 0.1g/L of anhydrous ammonium vanadium according to the mass concentration, controlling the pH value of the water body to be 5.5-7, observing the growth condition of a passivation coating film of the sediment of the landscape water body to be sealed, and when an obvious white aluminum hydroxide passivation film layer appears on the surface of the sediment, namely the passivation film layer achieves the effect of isolating endogenous pollution of the sediment;
5) when the time for maintaining the water clarity exceeds more than one week, the addition frequency of the anhydrous ammonium vanadium can be reduced to once every two weeks; and adjusting the adding frequency of the anhydrous ammonium vanadium once every four weeks, and stopping adding the anhydrous ammonium vanadium to adjust the water body when no water body is turbid in the four weeks, wherein the closed landscape water body, the local aquatic plants and the local aquatic animals reach balance preliminarily, namely the ecological circulation system establishes the pH value self-restoration capability of the water body.
The restoration of the closed landscape water body needs to establish the internal balance of the water body, the aquatic plants and the aquatic animal symbiotic system, namely, the aquatic plants consume nutritive salts, oxygen is supplied to the water body by utilizing photosynthesis and food is supplied to the aquatic animals, the aquatic animals control the overgrowth of the aquatic plants, the excrement of the aquatic animals nourish the aquatic plants, the water body outputs the aquatic plants and the aquatic animals to the outside, the virtuous cycle and the balance are achieved between the aquatic plants and the aquatic animals, the health of the water body can be kept for a long time, and the high definition of the water body is maintained.
Examples
The invention relates to a method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants. The repairing operation steps are as follows:
1. selecting a fish pond in which aquatic plants and animals are mixedly cultured as a closed water body to be treated in the Guangdong area in early summer, wherein the plants are polluted by algae to die, and thoroughly removing the aquatic animals including various fishes in the closed landscape water body to be repaired;
2. transplanting the native aquatic plants, culturing for 6 months, adding 0.1g/L of anhydrous ammonium vanadium according to the mass concentration, controlling the pH value of the water body to be 5.5-7, and adding the anhydrous ammonium vanadium at a frequency of: purifying the water body once every week;
3. feeding local aquatic animals, mainly feeding surface fishes for 2 months; during the process, anhydrous ammonium vanadium is added according to the same standard, and the frequency of adding the anhydrous ammonium vanadium is as follows: every two days in the first week; every three days for the second to third weeks; once every week from fourth to eighth week, the water body keeps periodic definition and the pH value of the water body is kept between 5.5 and 7;
4. adding anhydrous ammonium vanadium according to the same standard, wherein the adding frequency of the anhydrous ammonium vanadium is once per week, observing the growth condition of a substrate sludge passivation coating of the landscape water body to be sealed, and when an obvious white aluminum hydroxide precipitation passivation coating layer appears on the surface of the substrate sludge, achieving the effect of isolating endogenous pollution of the substrate sludge, as shown in figure 1;
5. when the time for maintaining the water clarity exceeds more than one week, the addition frequency of the anhydrous ammonium vanadium can be reduced to once every two weeks; after four weeks, adjusting the adding frequency of the anhydrous ammonium vanadium to be once every four weeks, and when the closed landscape water body, the indigenous aquatic plants and the indigenous aquatic animals reach balance preliminarily, forming an autonomous circulation ecosystem; the phenomenon that water is turbid does not exist in the periphery, the no effect figure is shown in figure 2, and the addition of the anhydrous ammonium vanadium can be stopped;
5. when the closed landscape water body system is influenced by climate, rainwater or blue algae outbreak and the like, and unbalance and muddy water body appear, 0.1g/L of anhydrous ammonium vanadium is actively added according to the mass concentration, the pH value of the water body is controlled to be 5.5-7, the water body is forcibly purified, the closed landscape water body, the indigenous aquatic plants and the indigenous aquatic animals are assisted to establish new balance in an autonomous circulation ecological system, and the adding frequency of the anhydrous ammonium vanadium in the balancing process refers to the steps 4 and 5;
6. when the added anhydrous ammonium vanadium is excessive or the pH value of the water body is less than 5.5, calcium hydroxide is rapidly added, the pH value is adjusted to be about 7.0, aquatic animals and plants of the self-circulation system for sealing the landscape water body, the local aquatic plants and the local aquatic animal ecology are protected from being damaged by acidity, the sulfate radical concentration of the water body is reduced, and the generated calcium sulfate sediment covers the surface of the bottom mud, so that the water body restoration effect can be enhanced.
In conclusion, the method for restoring the closed landscape water body by combining ammonium vanadium and aquatic animals and plants has the advantages that the water body of the ecological circulation system is purified and adjusted by adding the anhydrous ammonium vanadium, the period time for keeping the definition of the water body is gradually prolonged by periodically adding the pH value of the anhydrous ammonium vanadium, the passivation film layer of the aluminum hydroxide covering the bottom mud is formed, the pH value of the water body is gradually reduced and maintained in a proper range by adding the anhydrous ammonium vanadium, and meanwhile, the ecological circulation system is cultured to establish the self-restoration capability of the water body.
The method for restoring the closed landscape water body by combining the ammonium vanadium and the aquatic animals and plants has the advantages of obvious effect, low cost, environmental protection, no secondary pollution, effects of abnormal influences of weather, rainwater or blue algae outbreak and the like, and wide application range.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (8)
1. A method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants is characterized by comprising the following steps:
s1), establishing an ecological circulating system, wherein the ecological circulating system comprises a closed water body, aquatic plants and aquatic animals, cleaning unsuitable original aquatic plants of the closed landscape water body to be restored, transplanting suitable aquatic plants, and putting the aquatic animals suitable for the environmental requirements;
s2) purifying the water body: removing impurities, dead or rotten animal and plant bodies and aquatic animals and plants destroying ecological balance, adding anhydrous ammonium vanadium into the water body of the ecological circulating system, and adjusting the pH value of the water body to 5-7.5 to enable the water body to be clear;
s3) periodically adding anhydrous ammonium vanadium to assist the ecological circulation system in establishing the pH value self-repairing capability of the water body: and when the pH value of the water body is higher than 7.5 or the water body is turbid, adding anhydrous ammonium vanadium to adjust the pH value to be 5-7.5 to assist in restoring the ecological circulation system.
2. The method for restoring the closed landscape water body combined by ammonium vanadium and aquatic animals and plants according to claim 1, which is characterized by further comprising the following steps:
s4) when the pH value of the water body of the ecological cycle system is lower than 5 or the anhydrous ammonium vanadium is added excessively, adding calcium hydroxide to neutralize acidity, adjusting the pH value of the ecological cycle system to 5-7.5, and generating calcium sulfate precipitate to cover the surface of the bottom mud.
3. The method for restoring the closed landscape water body combined by ammonium vanadium and aquatic animals and plants according to claim 2, further comprising the following steps:
s5) when the ecological circulation system is unbalanced or the water body becomes turbid due to the influence of environmental factors, actively adding anhydrous ammonium vanadium to forcibly purify the water body and assist the ecological circulation system to establish new balance.
4. The method for restoring the closed landscape water body combined by ammonium vanadium and aquatic animals and plants according to claim 2, further comprising the following steps:
s6) when the water body definition of the ecological cycle system is gradually increased and the interval of the turbid period is continuously prolonged, the use frequency of the anhydrous ammonium vanadium is gradually reduced.
5. The method for restoring closed landscape water by combining ammonium vanadium and aquatic animals and plants according to claim 4, wherein the pH value of the water body of the ecological cycle system is in the range of 5.5-7 in steps S2 and S3.
6. The method for restoring a closed landscape water body by combining ammonium vanadium and aquatic animals and plants according to claim 5, wherein in steps S2 and S5, 0.1g/L of anhydrous ammonium vanadium is added to the water body of the ecological cycle system according to mass concentration.
7. The method for restoring the closed landscape water body by combining ammonium vanadium and aquatic animals and plants according to claim 4, wherein the use frequency of the anhydrous ammonium vanadium is as follows: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks; then, the treatment is carried out once every two weeks, and the treatment is changed to once every four weeks until the turbidity is not caused after more than two weeks after the anhydrous ammonium vanadium is added; and stopping adding the anhydrous ammonium vanadium until the anhydrous ammonium vanadium is kept clear for more than four weeks after the anhydrous ammonium vanadium is added.
8. The method for restoring the closed landscape water body by combining ammonium vanadium and aquatic animals and plants according to claim 7, wherein the specific operations for assisting the ecological circulation system to establish the pH value autonomous restoration capability of the water body are as follows:
1) selecting a closed landscape water body to be treated, and thoroughly removing unsuitable aquatic animals and plants in the closed landscape water body to be restored;
2) transplanting local aquatic plants suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during the culture period according to the mass concentration, controlling the pH value of the water body to be 5.5-7, purifying the water body to kill algae, and adding the anhydrous ammonium vanadium at the frequency of: once per week;
3) throwing local aquatic animals suitable for local climate, adding 0.1g/L of anhydrous ammonium vanadium during feeding according to mass concentration calculation, controlling the pH value of the water body to be 5.5-7, keeping the periodic definition of the water body, and adding the anhydrous ammonium vanadium at the frequency: the first week is once every two days; every three days for the second to third weeks; once per week for the fourth to eighth weeks;
4) adding 0.1g/L of anhydrous ammonium vanadium according to the mass concentration, controlling the pH value of the water body to be 5.5-7, observing the growth condition of a passivation coating film of the sediment of the landscape water body to be sealed, and when an obvious white aluminum hydroxide passivation film layer appears on the surface of the sediment, namely the passivation film layer achieves the effect of isolating endogenous pollution of the sediment;
5) when the time for maintaining the water clarity exceeds more than one week, the addition frequency of the anhydrous ammonium vanadium can be reduced to once every two weeks; and adjusting the adding frequency of the anhydrous ammonium vanadium once every four weeks, and stopping adding the anhydrous ammonium vanadium to adjust the water body when no water body is turbid in the four weeks, wherein the closed landscape water body, the local aquatic plants and the local aquatic animals reach balance preliminarily, namely the ecological circulation system establishes the pH value self-restoration capability of the water body.
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