CN1919746A - Processing method for eutrophication water and box - Google Patents
Processing method for eutrophication water and box Download PDFInfo
- Publication number
- CN1919746A CN1919746A CN 200610152264 CN200610152264A CN1919746A CN 1919746 A CN1919746 A CN 1919746A CN 200610152264 CN200610152264 CN 200610152264 CN 200610152264 A CN200610152264 A CN 200610152264A CN 1919746 A CN1919746 A CN 1919746A
- Authority
- CN
- China
- Prior art keywords
- water
- water body
- eutrophic
- algae
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a disposing method of eutrophication water and tank to separate the disposed eutrophication water, which comprises the following steps: putting pollution disposer with Ca(OH)2 or CaO in the disposed eutrophication water; adjusting pH value of water to object pH value through placing hardening-removing neutral agent in the water; adding flocculant to sediment suspension and colloid polymer. The tank contains groove with three rectangle or square jacconettes or baffle boards connecting tightly, wherein two ends of groove connect jacconette or baffle board and separating net as door switched bulk.
Description
Technical Field
The invention relates to a sewage treatment technology, in particular to a method for treating eutrophic water and a tank body for isolating the eutrophic water body to be treated.
Background
Eutrophication of water bodies is the result of abnormal proliferation of autotrophic organisms (mainly phytoplankton) in water bodies rich in nutrients such as nitrogen, phosphorus, organic matter, etc. Eutrophication of water bodies caused by nitrogen and phosphorus pollution is a worldwide environmental problem. At present, about 75 percent of lakes in China are obviously polluted, mainly due to serious eutrophication. It is very difficult to restore water quality by relying on the self-purification and ecological regulation ability of the water body which has been seriously polluted. Signs and hazards of eutrophication include scum and toxins from algal blooms, massive infestation of certain aquatic plants, increased incidence of water-related diseases, decreased transparency of water bodies, malodorous water bodies, depletion of dissolved oxygen in water, and catastrophic mass death of aquatic animals, among others. Some water bodies also suffer from heavy metal contamination.
The eutrophication of water bodies is caused by exogenous approaches (pollution caused by directly or indirectly discharging pollutants into the water bodies through discharge ports; pollution caused by bringing dissolved or solidpollutants in surface water and atmosphere into the water bodies in the process of rainfall) and endogenous approaches (pollutants come from bottom sediment of the water bodies). At present, the prevention and treatment strategy of water eutrophication mainly comprises the measures of blocking a pollution source causing the water eutrophication and reducing the pollution of the pollution source, reducing the excessive nutrient substances such as nitrogen, phosphorus and the like entering the water and reducing the content of the excessive nutrient substances such as nitrogen, phosphorus and the like in the water. The technology for eliminating the excessive propagation of algae in the water body comprises a chemical algae removal method, a biological method, a physical method and an ecological management method. The method can reduce the existing nutrients in the water body, such as nitrogen, phosphorus and the like, and also has a chemical method, a biological treatment method and the like. Each of these methods has advantages and disadvantages. At present, most eutrophic water body treatment methods for treating excessive propagation of algae such as blue algae and green algae have good effect on single factors, but the comprehensive effect is not ideal, for example, the comprehensive effect is good, for example, an ecological treatment method is also limited by a plurality of factors such as water quantity, field, time, capital cost, equipment and engineering implementation of the water body.
Disclosure of Invention
The invention provides a method for treating eutrophic water, which aims to solve the problems of poor comprehensive treatment effect and high treatment cost in the prior art of eutrophic water treatment;
furthermore, the invention also provides a box body, which aims to solve the problem of how to conveniently implement the technical scheme of the invention in a large-area natural water area.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for treating eutrophic water comprises the following steps:
A. putting a pollutant treating agent into the eutrophic water body to be treated, wherein the pollutant treating agent comprises hydrated lime (Ca (OH)2) Or quicklime (CaO);
B. and putting a hardness-removing neutralizer into the water body to adjust the pH value of the water body to a target pH value, and adding a flocculating agent into the water body to precipitate suspended matters and colloidal polymers in the water body.
Further, the steps A and B also comprise the following steps:
adjusting the pH value of the water body to be more than or equal to 10 and less than or equal to 12;
stirring the water body and carrying out ammonia permeation treatment;
and after the water body is kept still for 0.5-3 hours, removing the generated precipitate.
Further, before the step a, the method further includes: isolating the eutrophic water body to be treated; the step B further comprises the following steps: the resulting precipitate was removed.
Preferably, the pollutant treating agent further comprises calcium chloride (CaCl)2)。
Preferably, the hardness-removing neutralizer is sodium bicarbonate (NaHCO)3) Sodium carbonate (Na)2CO3) Carbon dioxide (CO)2) Or oxalic acid (H)2C2O4)；
Preferably, the flocculant is polyaluminium chloride [ Al]2(OH)nCl6-n]mAlum (KAl (SO)4)2·12H2O) or ferric chloride (FeCl)3)；
The target pH value is greater than or equal to 6.5 and less than or equal to 8.5.
In the method, according to the pollution degree of the eutrophic water body to be treated, the total amount of the pollutant treating agent, the hard neutralizing agent and the flocculating agent used in each cubic meter of the eutrophic water body to be treated is 60 to 350 grams.
Preferably, in the total amount:
the weight percentage of the pollutant treating agent is 50-85%;
the weight percentage of the hardness-removing neutralizer is 5-40%;
the weight percentage of the flocculant is 5-35%.
The invention also provides a box body which comprises a groove body formed by fixedly connecting three rectangular waterproof cloths or water baffles, wherein the two ends of the groove body are respectively and movably connected with the waterproof cloths or the water baffles used for opening and closing the door body.
Furthermore, two ends of the tank body are respectively and fixedly connected with an isolation net.
Wherein the fixed connection is in the form of sewing or waterproof zipper combination; the movable connection mode is the combination of a waterproof zipper.
The invention has the beneficial technical effects that:
1. the technical scheme of the invention utilizes Ca (OH) formed after a pollutant treating agent is dissolved in water2With CO in the water body2The chemical reaction is carried out to generate calcium carbonate precipitate which is difficult to dissolve in water, and carbon dioxide (CO) in the water body is rapidly removed2) Meanwhile, part of generated precipitates are attached to the surfaces of the algae to block a channel for the algae to breathe, so that organisms such as blue algae, green algae and bacteria cannot perform photosynthesis and respiration and rapidly lose activity, enter a shock state and die gradually, and are removed after precipitation, thereby achieving the purpose of removing the algae and treating various algae excessively propagated in the eutrophic water body, including the blue algae, the green algae and the like;
2. the technical scheme of the invention can rapidly and obviously relieve richnessThe nutrient substances such as nitrogen, phosphorus and the like in the water body are nourished. Phosphate in water reacts with Ca in alkaline environment2+A series of precipitation reactions occur to form calcium phosphate (Ca)3(PO4)2) Precipitating, namely removing phosphate in the water body in a precipitation mode, removing most of organic phosphorus while removing algae, so as to achieve the purpose of reducing the content of phosphorus in the water body, further limiting excessive propagation of the algae in the water body, wherein the removal rate of the phosphorus is more than 80% under the condition that the pH is 11; the pH value of the water body is kept at 10-12, nitrogen is permeated out by ammonia gas by adopting an ammonia permeation process, and the removal rate of the ammonia nitrogen reaches more than 80 percent, so that the content of the nitrogen in the water body is reduced;
3. the technical scheme of the invention can effectively clarify the water body, the wastewater carries a large amount of solid suspension to flow into the water body to form suspension and colloidal solution with the existing particles in the water body, and the particles are attached to algae such as blue algae, green algae andthe like in the water body, so that the color and the visibility of the water body are greatly reduced, and the water quality is muddy and deteriorated. After the treatment by the method, the turbid liquid and the colloidal solution are condensed into large particles under the action of the electrolyte solution and the flocculating agent, and the large particles are adsorbed and precipitated out, so that the water body is clear quickly;
4. the technical scheme of the invention can effectively remove heavy metal pollution in the water body. According to the chemical solubility product rule, under the condition that the PH value of the water body is 11, most of heavy metals (Pb, Cd, Hg, Mn, Zn and Cu) are dissolved in the salt solution of the heavy metals with difficultly soluble M (OH)2Precipitating;
5. the technical scheme of the invention can effectively reduce the odor of the polluted water body. The odor causing substances in the sewage are mainly composed of ammonia (NH)3) Hydrogen sulfide (H)2S), mercaptan, volatile fatty acid and the like. Ca (OH) formed after addition of contaminant treatment agent2The solution can react with hydrogen sulfide, fatty acid, etc., NH3Organic matters and organic matters such as suspended algae and humus which emit odor are removed under the alkaline condition through flocculation and precipitation, and the content of odor-causing substances in the water body is obviously reduced, so that the odor of the water body is reduced;
6. the technical scheme of the invention can remove dead algae and pollutants precipitated by precipitation from the water body in time, thereby avoiding secondary pollution of the water body, keeping the treatment effect for a long time, and having simple method and easy operation;
7. all the chemicals used in the invention are nontoxic and harmless, have wide sources, small dosage and low cost, and most of the applied chemicals become precipitates after chemical reaction and are removed out of the water body, so that the water body has no secondary pollution;
8. the water treatment tank body provided by the invention can be used for large-scale direct continuous construction in the water body of a natural water area, other special large-scale facilities are not needed, most of organisms living in the water body are effectively protected, the treatment cost is reduced, and the time is saved;
9. and (4) recycling water pollutants. The removed pollutants are mainly rich in nutrients such as calcium, phosphorus and dead algae, and can be reused as agricultural fertilizer.
10. By using the technical scheme of the invention, the water quality of the treated water body can reach the national domestic water standard, the visibility of the water body is greatly improved, and the water body environment and the landscape effect are effectively improved.
In conclusion, the technical scheme of the invention can comprehensively treat the pollution of algae, phosphorus, nitrogen, heavy metal and the like in the eutrophic water, effectively reduce the odor of the water body, clarify the water body and reuse the removed pollutants rich in nutrient substances such as calcium, phosphorus, dead algae and the like as agricultural fertilizers. The technical scheme of the invention has lower cost and simple operation, the water quality after treatment reaches the water quality standard of the water in China, the visibility of the water body is greatly improved, and the water body environment and the landscape effect are effectively improved.
Drawings
FIG. 1 is a main flow chart of the eutrophic water treatment method of the present invention;
FIG. 2 is a box body for treating nutrient water in the isolation zone.
Detailed Description
The invention provides a simple and easy-to-operate comprehensive treatment method of eutrophic water with low cost and no secondary pollution, which can treat eutrophic water body with over-propagation of algae such as blue algae and green algae, obviously reduce eutrophic substances such as nitrogen and phosphorus and heavy metal substances in the water body, remove algae such as blue algae and green algae, obviously reduce odor, clarify water quality and restore self-purification capability and ecological function of the water body. The water quality after treatment reaches the national water quality standard, the visibility of the water body is greatly improved, and the water body environment and the landscape effect are effectively improved.
The invention aims at the excessive propagation of algae such as blue algae, green algae and the like in eutrophic water, the pollution of nitrogen, phosphorus and heavy metal, obvious foul smell of water body and the like, and uses hydrated lime (Ca (OH)2) Or quicklime (CaO) and calcium chloride (CaCl)2) The combination is a pollutant treating agent; with sodium bicarbonate (NaHCO)3) Sodium carbonate (Na)2CO3) Carbon dioxide (CO)2) Oxalic acid (H)2C2O4) Any of which is a hardness-removing neutralizer; with polyaluminium chloride ([ Al]2(OH)nCl6-n]m) Alum (KAl (SO)4)2·12H2O), ferric chloride (FeCl)3) Any of which is a flocculant. According to the pollution degree of the water body, the total amount of the pollutant treatingagent, the hardness removing neutralizer and the flocculating agent in each cubic meter of sewage is 60-350 g. The components of the formula comprise 50-85 wt% of pollutant treating agent, 5-40 wt% of hardness-removing neutralizer and 5-35 wt% of flocculating agent.
As shown in figure 1, the eutrophic water treatment method specifically comprises the following steps:
step S101, putting a pollutant treating agent into the eutrophic water body to be treated, wherein the pollutant treating agent comprises hydrated lime (Ca (OH)2) Or quicklime (CaO) and includes calcium chloride (CaCl)2) Adding calcium chloride (CaCl)2) Aims at increasing calcium ion Ca in water body2+Content, adding calcined stone by precipitationAsh (Ca (OH)2) Or surplus phosphate existing in the water body after the quicklime (CaO);
step S102, adjusting the pH value of the water body to be more than or equal to 10 and less than or equal to 12, and stirring the water body and carrying out ammonia permeation treatment;
sampling part of water body, for example 5L, and estimating the required pollutant treating agent input amount for adjusting the pH value of the whole water body to be treated to be more than or equal to 10 and less than or equal to 12 according to the dosage of the pollutant treating agent used for adjusting the pH value of the sample to be more than or equal to 10 and less than or equal to 12.
And S103, removing the generated precipitate after the water body is kept still for 0.5-3 hours.
The contaminant treatment agent forms Ca (OH) upon dissolution in water2Solution, Ca (OH)2With CO in the water body2The chemical reaction is carried out to generate calcium carbonate precipitate which is insoluble in water, and the chemical reaction equation is as follows:
in the process of chemical reaction, carbon dioxide (CO) in the water body can be rapidly removed2) With formation of part of the precipitated calcium carbonate (CaCO)3) Attached to the surface of the algae, the algae block a channel for the respiration of the algae, so that organisms such as blue algae, green algae, bacteria and the like cannot perform photosynthesis and respiration and lose activity rapidly, enter a shock state and die gradually, and then precipitate to achieve the aim of removing the algae. The settled algae can be removed firstly or finally, and the removing method is to use a water pumping device to pump.
If the sewage is not polluted by heavy metals or is polluted by the heavy metals very little, the precipitate which is removed in advance can be directly reused. But if the heavy metal pollution in the sewage is serious, the recycling of the precipitate is influenced.
Phosphorus is the most main limiting substance for algae propagation, and phosphate in water body is mixed with Ca under alkaline environment2+A series of precipitation reactions occur to form calcium phosphate (Ca)3(PO4)2) Precipitating to remove phosphate in water body in form of precipitateAnd most of organic phosphorus is removed while the algae is removed, so that the aim of reducing the content of phosphorus in the water body is fulfilled, and the excessive propagation of the algae in the water body is limited. Experiments prove that the removal rate of the phosphorus is more than 80% under the condition of PH 11.
The chemical reaction equation is as follows:
and (3) keeping the pH value of the water body at 10-12, and further removing ammonia nitrogen in the sewage by adopting an ammonia leaching process.
The ammonia permeation process is characterized in that the pH value of a water body is controlled within the range of 10.8-11.5, a large amount of air is introduced (hot air is preferably introduced by using a hot air blower), so that water repeatedly forms water drops, and the steam and the water are contacted to allow ammonia gas to permeate out. The chemical reaction equation is as follows:
under the alkaline environment with the pH value of 10-12 and the stirring separation process condition, the nitrogen is permeated by ammonia gas, and the test proves that the removal rate of the ammonia nitrogen reaches more than 80 percent, so that the nitrogen content in the water body is reduced.
S104, adding a hardness-removing neutralizer into the water body to adjust the pH value of the water body to a target pH value, and removing excessive Ca in the water body2+；
The hardness-removing neutralizer is sodium bicarbonate NaHCO3Sodium carbonate Na2CO3Carbon dioxide CO2Or oxalic acid H2C2O4The target PH value is more than or equal to 6.5 and less than or equal to 8.5, and the PH value range in the domestic drinking water standard is met, and the pH value in the range is favorableBiological growth in water.
S105, adding a flocculating agent into the water body to precipitate suspended matters and colloidal polymers in the water body;
the flocculating agent is polyaluminium chloride (Al)2(OH)nCl6-n]mAlum (KAl (SO)4)2·12H2O) or ferric chloride (FeCl)3)；
All the chemicals used in the method are nontoxic and harmless, have wide sources, small dosage and low cost, and most of the applied chemicals become precipitates after chemical reaction and are removed out of the water body, so that the method has no secondary pollution to the water body.
And S106, removing the generated precipitate after the water body is clarified.
The specific method for removing the sediments at the bottom of the tank is generally adopted by a power water pumping device.
The unpurified wastewater carries a large amount of solid suspension to flow into the water body to form suspension and colloidal solution with the existing particles in the water body, and the particles are attached to algae such as blue algae, green algae and the like in the water body, so that the color and the visibility of the water body are greatly reduced, and the water quality is turbid and deteriorated. After the treatment of step S105, the suspension and the colloidal solution are coagulated into large particles under the action of the electrolyte solution and the flocculant, and the large particles are adsorbed and precipitated, so that the water is quickly clear.
The heavy metal pollution in the water body is eliminated by the treatment process, and most of heavy metals (Pb, Cd, Hg, Mn, Zn and Cu) are dissolved in the salt solution of the heavy metals by insoluble M (OH) according to the chemical solubility product rule under the condition that the pH value of the water body is 112Precipitating and separating out, thereby eliminating heavy metal pollution in the water body.
The odor of the water body can be reduced by the above treatment process, and the odor-causing substances in the sewage mainly comprise ammonia gas (NH)3) Hydrogen sulfide (H)2S), mercaptan, volatile fatty acid and the like. Ca (OH) formed after addition of contaminant treatment agent2The solution can react with hydrogen sulfide, fatty acid, etc., NH3Is separated out under alkaline condition, and will give off odor due to flocculation and precipitationThe organic matters and organic matters such as suspended algae, humus and the like are removed, and the content of odor-causing substances in the water body is obviously reduced, so that the odor of the water body is reduced.
Dead algae and pollutants precipitated by the sediment can be removed from the water body in time through the process, so that secondary pollution is prevented, and the method is simple and easy to operate. If the settled pollutants are not removed, the pollutants are the pollution source of secondary pollution of the water body, so that the eutrophication state and the pollutants of the water body are difficult to be removed, and the effect of temporary treatment can be achieved. After a period of time, the water body will return to the original state. If the pollutants to be settled are sunk into the bottom sediment, the economic cost and difficulty of clearing the pollutants are greatly increased. And the removed pollutants are mainly rich in nutrients such as calcium, phosphorus and dead algae, and can be reused as agricultural fertilizer.
The treatment method can be conveniently used for treating eutrophic water in any water area, and if the eutrophic water is a closed small water area, the eutrophic water can be directly treated without considering the influence on other organisms. If the water area is large, the water can be circularly treated in a mode of extracting part of water each time. In natural environments such as lakes and the like, a large water area is separated and treated by using a movable water treatment tank with an isolation function, so that the influence on organisms in the water body is reduced as much as possible.
As shown in fig. 2, the present invention provides a movable water treatment tank 200 for performing the above-mentioned isolation function, wherein the tank 200 comprises the following structure: a rectangular or square bottom surface 201, four side surfaces 202, 203, 204 and 205, two mesh isolation meshes 206 and 207, wherein:
the side surface 202 and the side surface 203 are respectively and vertically connected to two parallel edges of the box bottom 201, the side surface 202 and the side surface 203 can be water-retaining sealing plates or water-retaining cloth, joints of all surfaces of the structure body are sewn or connected through a water-retaining zipper to form a groove body, and the size of the groove body is determined according to the water quantity to be treated each time.
The other two side surfaces 204 and 205 are respectively connected with two ends of the tank body as movable doors, and the movable doors are also made of water-blocking sealing plates or water-blocking cloth. When the box body is moved, the two movable doors are opened to be convenient to move, and before water treatment is carried out, the two movable doors are closed, so that a relatively closed water area is formed in the box body. The specific structure types of the movable door are various, such as single-door, double-door and the like, and the opening and closing mode can adopt a zipper type structure, for example, a mechanical arm with a certain length is fixedly connected with a zipper end for operation.
Fig. 2 illustrates a single-door structure, taking the side 206 as an example, one of three sides of the side 206 is fixedly connected with one side of the side 202, one side of the side is movably connected with one side of the bottom 201 of the box 200 through a zipper, the other side of the side is movably connected with one side of the side 203 through a zipper, before the box 200 moves, the zipper is unzipped, the side 206 is opened, after the box 200 reaches a designated position, the zipper is zipped, and the side 206 is closed, so that a movable door structure is formed. A zipper structure may also be used to join side 206 to side 202 and side 206 to side 203, again forming a sliding door structure.
The two ends of the tank body connected with the two reticular separation nets 206 and 207 respectively can separate aquatic organisms from entering the tank body, so that the influence on the aquatic organisms in the treatment process can be avoided. Dead algae and the pollutant that precipitates out deposit to the bottom surface 201 on the one hand, avoid the water by secondary pollution, can keep the treatment effect for a long time, on the other hand is through the degree of depth of control box 200, has made things convenient for the extraction of precipitate, has reduced the required power of extraction, has further practiced thrift water treatment cost.
The box body floats on water, the opening and closing direction of the movable door is consistent with the moving direction of the box body 200 in the water or is vertical to the direction 201, and any water power device can be utilized to drag the box body 200 to move. If the area of the box body is larger, a boat with a stirring device at the bottom can be arranged in the water area in the box body and used for dispersedly putting in the pollutant treating agent, the hardness-removing neutralizer and the flocculating agent and stirring and extracting the sediments in the putting process.
The technical solution of the present invention is further illustrated by the following specific examples:
embodiment 1
The water sample is taken from a fish pond, 4L of the water sample is yellow green, contains a plurality of blue algae, green algae, humus and mud dust colloid, and has odor, turbid liquid state and low visibility. The pH test paper has a test value of 7, and algae are attached to the test paper.
Air temperature during the experiment: 29-30 deg.C
The formula is as follows:
pollutant treating agent: slaked lime (Ca (OH)2) 1.1g
And (3) hardness removal neutralizer: sodium bicarbonate (NaHCO)3) 0.3g
Flocculating agent: polyaluminum chloride ([ Al)2(OH)nCl6-n]m) 0.3g
Example II
The water sample is taken from a park landscape lake, is 5L and is light yellow green turbid liquid, and contains a plurality of blue-green algae, humus, mud dust and the like. The pH test paper has a test value of 6 and has fishy smell.
Air temperature during the experiment: 25 deg.C
The formula is as follows:
pollutant treating agent: slaked lime (Ca (OH)2) 1.0g
And (3) hardness removal neutralizer: sodium bicarbonate (NaHCO)3) 0.3g
Flocculating agent: ferric chloride (FeCl)3) 0.3g
Example three
A water body of 6m multiplied by 2m multiplied by 1.8m, about 21.6m is isolated in a small river which is seriously polluted3. The water body is polluted by agricultural sewage, the color of the water body is yellow green, turbid liquid has the visibility of less than 20cm, blue algae and green algae in the water body are excessively propagated, a plurality of humus and mud dust particles with straw rotting exist, and the PH is 6.
Air temperature during the experiment: 30-33 deg.C
The formula is as follows:
pollutant treating agent: slaked lime (Ca (OH)2) 4.8Kg
And (3) hardness removal neutralizer: sodium bicarbonate (NaHCO)3) 0.44Kg
Flocculating agent: polyaluminum chloride ([ Al)2(OH)nCl6-n]m) 0.93Kg
After the treatment, the pollutants such as algae, phosphorus, nitrogen, heavy metals and the like can be effectively removed, the odor of the water body is effectively reduced, the water body is clarified, the pollutants precipitated in the water body are removed simply and conveniently at low cost, and the removed pollutants rich in nutrient substances such as calcium, phosphorus and dead algae are used as agricultural fertilizers.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The eutrophic water treatment method is characterized by comprising the following steps:
A. putting a pollutant treating agent into the eutrophic water body to be treated, wherein the pollutant treating agent comprises hydrated lime (Ca (OH)2) Or quicklime (CaO);
B. and putting a hardness-removing neutralizer into the water body to adjust the pH value of the water body to a target pH value, and adding a flocculating agent into the water body to precipitate suspended matters and colloidal polymers in the water body.
2. The method of claim 1, further comprising, between steps a and B, the steps of:
adjusting the pH value of the water body to be more than or equal to 10 and less than or equal to 12;
stirring the water body and carrying out ammonia permeation treatment;
and after the water body is kept still for 0.5-3 hours, removing the generated precipitate.
3. The method of claim 1, wherein:
the step A is also preceded by: isolating the eutrophic water body to be treated;
the step B further comprises the following steps: the resulting precipitate was removed.
4. The method of claim 1, 2 or 3, wherein the pollutant treating agent further comprises calcium chloride (CaCl)2)。
5. A method as claimed in claim 1, 2 or 3, characterized by:
the hardness-removing neutralizer is sodium bicarbonate (NaHCO)3) Sodium carbonate (Na)2CO3) Carbon dioxide (CO)2) Or oxalic acid (H)2C2O4)；
The flocculating agent is polyaluminium chloride (Al)2(OH)nCl6-n]mAlum (KAl (SO)4)2·12H2O) or ferric chloride (FeCl)3)；
The target pH value is greater than or equal to 6.5 and less than or equal to 8.5.
6. The method as set forth in claim 1, 4 or 5, wherein the total amount of the contaminant treatment agent, the hard neutralizing agent and the flocculating agent used per cubic meter of the eutrophic water body to be treated is 60 to 350g, depending on the degree of contamination of the eutrophic water body to be treated.
7. The method of claim 5, wherein, in the total amount:
the weight percentage of the pollutant treating agent is 50-85%;
the weight percentage of the hardness-removing neutralizer is 5-40%;
the weight percentage of the flocculant is 5-35%.
8. The tank body for isolating the eutrophic water body to be treated by applying the method of claim 1 comprises a tank body formed by fixedly connecting three rectangular or square waterproof cloths or water baffles, and is characterized in that the two ends of the tank body are respectively and movably connected with the waterproof cloths or the water baffles used for opening and closing the door body.
9. The tank body as claimed in claim 8, wherein two ends of the tank body are respectively and fixedly connected with an isolation net.
10. A carton as claimed in claim 8 or claim 9, wherein the fixed connection is in the form of a stitched or water-tight zip bond; the movable connection mode is the combination of a waterproof zipper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101522644A CN100389080C (en) | 2006-09-27 | 2006-09-27 | Processing method for eutrophication water and box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101522644A CN100389080C (en) | 2006-09-27 | 2006-09-27 | Processing method for eutrophication water and box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1919746A true CN1919746A (en) | 2007-02-28 |
| CN100389080C CN100389080C (en) | 2008-05-21 |
Family
ID=37777627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101522644A Expired - Fee Related CN100389080C (en) | 2006-09-27 | 2006-09-27 | Processing method for eutrophication water and box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100389080C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001716A (en) * | 2010-11-12 | 2011-04-06 | 中国科学院沈阳应用生态研究所 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
| CN103570144A (en) * | 2012-12-28 | 2014-02-12 | 青岛啤酒股份有限公司 | Method for inhibiting bottle washing machine from scaling by using carbon dioxide discharged by wine filling machine |
| CN105883999A (en) * | 2016-04-26 | 2016-08-24 | 大连汇新钛设备开发有限公司 | Calcium oxide sustained-release block for regulating pH value of recirculating aquaculture system and preparation method of calcium oxide sustained-release block for regulating pH value of recirculating aquaculture system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2044695C1 (en) * | 1993-05-21 | 1995-09-27 | Сибирский государственный проектный и научно-исследовательский институт цветной металлургии | Coal flotation tailings solid suspended particles clearing method |
| DE4330934A1 (en) * | 1993-09-07 | 1995-03-09 | Uve Inst Fuer Tech Chemie Und | Composition and process for treating pollutant-enriched stagnant waters |
| CN1172861C (en) * | 2002-05-17 | 2004-10-27 | 中国科学院华南植物研究所 | Treating method of polluted or nutritive water |
-
2006
- 2006-09-27 CN CNB2006101522644A patent/CN100389080C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001716A (en) * | 2010-11-12 | 2011-04-06 | 中国科学院沈阳应用生态研究所 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
| CN102001716B (en) * | 2010-11-12 | 2013-07-24 | 中国科学院沈阳应用生态研究所 | Method for controlling water eutrophication by using hydrogen nitrate and formic acid |
| CN103570144A (en) * | 2012-12-28 | 2014-02-12 | 青岛啤酒股份有限公司 | Method for inhibiting bottle washing machine from scaling by using carbon dioxide discharged by wine filling machine |
| CN103570144B (en) * | 2012-12-28 | 2015-09-23 | 青岛啤酒股份有限公司 | The carbonic acid gas utilizing dress wine machine to arrange outward stops the method for bottle washing machine fouling |
| CN105883999A (en) * | 2016-04-26 | 2016-08-24 | 大连汇新钛设备开发有限公司 | Calcium oxide sustained-release block for regulating pH value of recirculating aquaculture system and preparation method of calcium oxide sustained-release block for regulating pH value of recirculating aquaculture system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100389080C (en) | 2008-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5500131A (en) | Compositions and methods for water treatment | |
| KR20200029691A (en) | A high density cycle filtration cultivation system | |
| KR101702345B1 (en) | Apparatus and Method for Removing Algae | |
| TWI487674B (en) | Biological purifier for water to be treated, biological purifying system, and method of biological purifying | |
| CN109851163A (en) | A kind of unhurried current small watershed removes algae algae control method | |
| CN1919746A (en) | Processing method for eutrophication water and box | |
| JP2020099846A (en) | Water quality purification method | |
| KR101853095B1 (en) | Method for Removing Algae in Water | |
| JP3797296B2 (en) | Purification method of bottom sludge | |
| CN1942406A (en) | Process for the treatment of sludge | |
| JP4655279B2 (en) | Natural material water purification coagulating sedimentation agent | |
| CN205933543U (en) | Biochemical treatment device of high calcium, high magnesium waste water | |
| CN101817578A (en) | Magnetic-capturing removing method of algae substances in eutrophication water body and device thereof | |
| KR100919777B1 (en) | Solid material for wastewater treatment and fabricating method the same | |
| KR101702346B1 (en) | Movable Apparatus and Method for Removing Floating Matter | |
| JP4997389B2 (en) | Water purification system and water purification method | |
| CN209113685U (en) | A kind of black and odorous water processing unit | |
| KR101114520B1 (en) | Porous block for treatment of water | |
| JP4255390B2 (en) | Disassembling method | |
| JP2005342624A (en) | Method for producing bottom sediment purification material composed of shell | |
| CN1245478C (en) | Agent for improving coastal seabed soil and water quality | |
| CN104003576A (en) | Eutrophic water body phycomycete symbiosis purification technique | |
| JP3797297B2 (en) | Purification method of bottom sludge | |
| KR20170055058A (en) | An expellant for red/green tide and Method for expell the red/green tide | |
| JP4101603B2 (en) | How to remove sedimentation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080521 Termination date: 20190927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |