CN109133367B - Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof - Google Patents
Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof Download PDFInfo
- Publication number
- CN109133367B CN109133367B CN201811070705.5A CN201811070705A CN109133367B CN 109133367 B CN109133367 B CN 109133367B CN 201811070705 A CN201811070705 A CN 201811070705A CN 109133367 B CN109133367 B CN 109133367B
- Authority
- CN
- China
- Prior art keywords
- purifying agent
- agent
- water
- aquaculture
- biological bacteria
- 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.)
- Active
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
Abstract
The invention discloses a purifying agent for aquaculture and river deodorization, and a preparation method and application thereof, wherein the purifying agent is a solid-liquid mixture, the pH value of the purifying agent is 9.5-10.5, and the purifying agent comprises magnesium hydroxide, organic acid, a suspending agent, biological bacteria and water, wherein the mass content of the magnesium hydroxide is 10-70%, the mass content of the suspending agent is 0.001-5%, the biological bacteria are eutrophic degrading bacteria, and the mass content of the biological bacteria is 0.001-10%. The preparation method of the purifying agent comprises the following steps: the magnesium oxide and water are subjected to hydration reaction to generate magnesium hydroxide, and then the suspending agent and the biological bacteria are added and mixed evenly when the temperature is below 95 ℃ to obtain the magnesium hydroxide. The purifying agent is particularly suitable for aquaculture and river deodorization, and has good deodorization effect, convenient operation and good safety.
Description
Technical Field
The invention relates to the technical field of aquaculture and riverways, in particular to a purifying agent with the functions of deodorizing the aquaculture and the riverways and purifying water quality and a preparation method thereof.
Background
Along with economic development, domestic and production sewage discharge is increasing day by day, and great pressure is brought to the environment. The problems of heavy metal pollution, high nutrient load conduction and the like caused by the discharge pollution of sewage and the use of chemical fertilizers lead to the fact that water quality cannot be used for irrigation, aquaculture and enjoyable environment enjoyment. Under extreme conditions, algal blooms can cause problems of toxicity to organisms, reduced water production values, low dissolved oxygen, and low water transparency.
In addition, the pH of the water is also an important pollution-related factor. Eutrophication of water bodies causes pH drop, which not only causes increase of sulfides, but also increases of heavy metal activity, which leads to increased risk of diseases such as bone pain.
At present, most of aquaculture farms and riverways with water quality treatment requirements are not connected into a sewage treatment network, and water circulation is adopted to delay the deterioration of the condition when water quality pollution occurs, but the effect of the mode is not ideal. However, if the odor and pollution are solved by adding chemical agents, most of the chemical agents have certain effects but cannot be compatible with aquatic organisms. And the problems of odor and pollution are solved by adopting physical treatment modes such as pumping, re-irrigating and the like, the cost is high, the investment of manpower and material resources is large, and the normal use is influenced.
Disclosure of Invention
The invention aims to provide a novel special purifying agent for aquaculture and river deodorization and purification, which has a good deodorization effect and good biological compatibility with water.
The invention also provides a preparation method of the purifying agent for aquaculture and river deodorization and purification, and the purifying agent obtained by the method has good fluidity and stability and excellent deodorization effect.
In order to achieve the purpose, the invention adopts a technical scheme as follows: a purifying agent for aquaculture and river deodorization is a solid-liquid mixture, the pH value of the solid-liquid mixture is 9.5-10.5, the components of the purifying agent comprise magnesium hydroxide, organic acid, a suspending agent, biological bacteria and water, the mass content of the magnesium hydroxide in the purifying agent is 10-80%, the mass content of the suspending agent is 0.001-5%, and the mass content of the biological bacteria is 0.001-10% of eutrophic degradation bacteria.
Preferably, the mass content of magnesium hydroxide in the scavenger is less than 65%.
Preferably, the mass content of the suspending agent in the purifying agent is less than 3%. More preferably, the mass content of the suspending agent in the purifying agent is less than 2%.
Preferably, the mass content of the biological bacteria is less than 3%.
According to a specific and preferred aspect of the invention, in the purifying agent, the mass content of magnesium hydroxide is 20-60%, the mass content of the suspending agent is 0.0013-0.5%, and the mass content of the biological bacteria is 0.001-1%.
According to a preferred embodiment of the invention, the suspending agent is hydroxypropylmethylcellulose.
According to another preferred embodiment of the invention, the organic acid is glacial acetic acid, citric acid or a combination of both.
According to the invention, the mass content of the organic acid is preferably 0.001% to 0.5%, particularly preferably 0.04% to 0.125%.
According to the present invention, the biological bacteria preferably include one or more selected from ammonia nitrogen degrading bacteria, organic phosphorus degrading bacteria, and inorganic phosphorus degrading bacteria.
Preferably, the purifying agent is prepared by the following method: the magnesium oxide and water are subjected to hydration reaction to generate magnesium hydroxide, and then a suspending agent and biological bacteria are added and uniformly mixed at the temperature of below 95 ℃ to obtain the purifying agent.
Further preferably, the ratio of each raw material is, based on 100% of the total mass of all the raw materials: 10-60% of magnesium oxide, 0.04-0.125% of organic acid, 0.0013-0.5% of suspending agent, 0.001-0.5% of biological bacteria and water as well as others.
The invention also provides a preparation method of the purifying agent, which comprises the following steps: the magnesium oxide and water are subjected to hydration reaction to generate magnesium hydroxide, and then a suspending agent and biological bacteria are added and uniformly mixed at the temperature of below 95 ℃ to obtain the purifying agent.
Further preferably, the ratio of each raw material is, based on 100% of the total mass of all the raw materials: 10-60% of magnesium oxide, 0.04-0.125% of organic acid, 0.0013-0.5% of suspending agent, 0.001-0.5% of biological bacteria and water as well as others.
Preferably, more than 95% of the solid particles in the feedstock are less than or equal to 30 microns.
Further, firstly, adding water into a reaction kettle, adding magnesium oxide while stirring, adding organic acid when the temperature is 65-95 ℃, stirring, then adding a suspending agent, stirring, then adding biological bacteria, and uniformly mixing to obtain the purifying agent.
The invention also relates to application of the purifying agent in aquaculture and river deodorizing and purifying.
Further, when in use, the purifying agent is uniformly sprayed on the aquaculture and the water surface of the riverway.
Further, the total dosage rate of the purifying agent per week is 45-150mg/l, and is specifically set based on the total amount of the water body.
Further, when in use, the purifying agent is directly added into the water body needing deodorization.
Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the purifying agent is thrown into the water body of an aquaculture or a river to be treated, and the pH value can be kept stable. The purifying agent can keep the pH value stable, so the emission of hydrogen sulfide is reduced to the maximum extent, and the emission of ammonia gas is avoided. And because the pH value is kept stable, the activity of heavy metal is prevented from being increased, and meanwhile, the heavy metal pollution is prevented.
2. The purifying agent has good fluidity, can be directly put into use, does not need to be prepared on site, and is convenient to use. The purifying agent of the present invention can maintain the magnesium hydroxide in suspension state stably after being thrown into sewage.
3. In the purifying agent of the invention, the main component of magnesium hydroxide is safe and harmless, and compared with lime, the purifying agent does not cause chemical burn. Therefore, the purifying agent has high safety in production, transportation and use, and safety accidents and industrial accidents are avoided.
Detailed Description
The purifying agent provided by the invention takes magnesium hydroxide as a main component, and obtains excellent fluidity, storage stability and use stability through the action of organic acid and a suspending agent, so that the optimal deodorization effect can be conveniently and safely obtained. The excessive nutrient enrichment is digested by the nutrient enrichment degradation microbial bacteria, so that the increase of algae and suspended matters is prevented.
In the composition of the purifying agent, the magnesium hydroxide is preferably prepared by in-situ hydration reaction of magnesium oxide and water, and the hydration reaction is preferably carried out in the presence of organic acid.
The hydration of magnesium oxide is carried out according to the following reaction equation:
MgO(s) +H2O(ℓ)→ Mg(OH)2(s)
during the preparation process, organic acid is preferably added, the organic acid can promote the reaction, in the reaction of magnesium oxide and water, the viscosity is increased along with the reaction, and the addition of the organic acid can reduce the viscosity and promote the reaction to continue. The organic acid is preferably 75-98% glacial acetic acid or citric acid or other organic acids.
One preferred preparation of the scavenger comprises: 1) adding water into a reaction kettle, adding magnesium oxide while stirring, adding organic acid when the temperature is reduced to 65-95 ℃ after full reaction, and stirring (for example, for 30 minutes); 2) then adding the suspending agent and stirring (for example, 40 minutes); 3) then, biological bacteria are added within 24 hours before use, and the pH value of the final purifying agent is 9.5-10.5.
In some specific and preferred embodiments, the raw material formula of the purifying agent comprises, by weight, 10-60% of magnesium oxide, 0.04-0.125% of organic acid, 0.0013-0.5% of suspending agent, 0.001-0.5% of biological bacteria, and the balance of water;
further, the raw material of the magnesium oxide preferably has a purity ratio of the magnesium oxide of more than 90% and a purity ratio of the silicon dioxide of less than 0.5%. In actual production, impurities inevitably exist in the magnesium oxide raw material, and the impurities comprise one or more of calcium oxide, ferric oxide, aluminum oxide and silicon dioxide.
In the purifying agent, the suspending agent has the function of ensuring that the final purifying agent does not settle in storage and after being put into a water body, and keeping the suspension concentration. The suspending agent may be, for example, hydroxypropylmethylcellulose, preferably one or more of 5,000-20,000CP viscosity specification.
In the purifying agent, the biological bacteria are particularly preferably one or more of eutrophic degrading bacteria such as ammonia nitrogen, phosphorus and the like.
Further, the solid particle size in the purifying agent raw material is as follows: more than 95% of the solid particles are smaller than 30 microns. If the solid particles of the raw materials are too large, the reaction speed during production is influenced; in addition, when the finished product purifying agent is used, a water pump is adopted to feed the purifying agent through a nozzle, and the raw material particles are too large, so that impurities can be generated in the finished product purifying agent to block the nozzle.
The purifying agent provided by the embodiment of the invention has the following characteristics:
1. the purifying agent is compatible with aquatic living matters, and can be added into water to be treated, and the pH value can be kept stable. The water treatment process is generally carried out discontinuously, and according to experimental measurement, the pH value is always stabilized at 8-9 after the water treatment process is carried out for 30 minutes.
2. The scavenging agent can keep the pH value stable, so that the emission of hydrogen sulfide is reduced to the maximum extent. And because the pH value is kept stable, the activity of heavy metal is prevented from being increased, and meanwhile, the heavy metal pollution is prevented.
3. The purifying agent can precipitate suspended matters in water and consume redundant nutrient-rich components.
4. The purifying agent can enable the bottom sludge to be gathered more, so that the difficulty in necessary cleaning is reduced.
5. In the cleaning agent, magnesium hydroxide as a main component is safe and harmless, and does not cause chemical burn compared with lime. Because the safety is high in production, transportation and use, safety accidents and industrial accidents are avoided.
6. The purifying agent disclosed by the invention is simple and safe in composition, completely harmless to a water body, simple in preparation method, easy to realize and good in industrial application prospect.
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features. In each of the following examples, the scavenger concentration is the ratio of the weight of magnesium hydroxide to the weight of scavenger.
Example 1
A purifying agent for deodorizing water in a riverway is prepared from the following raw materials in percentage by weight: 1) adding water into a reaction kettle, adding magnesium oxide while stirring, adding 200 parts of water into every 100 parts by weight of magnesium oxide, fully reacting, and when the temperature is reduced to 70 ℃, 2) adding 0.3 part of organic acid (75% glacial acetic acid), and stirring for 30 minutes; 3) then 2 parts of a suspending agent (hydroxypropyl methylcellulose with the viscosity specification of 15,000 mPa.s) are added and stirred for 40 minutes; 4) then adding 1 part of microorganism (ammonia nitrogen degrading bacteria and organic phosphorus degrading bacteria) and stirring for 5 minutes; the final scavenger concentration was 56% and the pH was 9.6. The purification capacity of the prepared purifying agent is tested:
the prepared purifying agent is used in a riverway of Xijing of Shanghai Bao mountain area Luoshu, Shanghai province, the surface of the purifying agent is uniformly sprayed every day at different rates of 45-150mg/l based on the total amount of water in one week, and the pH value, turbidity, total phosphorus and chromaticity of the water are monitored. Before the purifying agent is put in, the pH value of water is 7.61, the turbidity is 250, the total phosphorus is 0.81ppm, the total nitrogen is 3.14ppm and the chroma is turbid between brown and green, and the pH value of the water is 8.01, the turbidity is 20, the total phosphorus is 0.15ppm, the total nitrogen is 0.7ppm and the chroma is clear within 4 weeks after the purifying agent is put in.
Example 2
A purifying agent for deodorizing water in a riverway is prepared from the following raw materials in percentage by weight: 1) adding water into a reaction kettle, adding magnesium oxide while stirring, adding 250 parts of water into every 100 parts by weight of magnesium oxide, fully reacting, and when the temperature is reduced to 70 ℃, 2) adding 0.3 part of organic acid (75% glacial acetic acid), and stirring for 30 minutes; 3) then 2 parts of a suspending agent (hydroxypropyl methylcellulose with the viscosity specification of 15,000 mPa.s) are added and stirred for 40 minutes; 4) then, 1 part of microorganism (ammonia nitrogen degrading bacteria and organic phosphorus degrading bacteria) is added and stirred for 5 minutes, and the final purifying agent has the concentration of 48 percent and the pH value of 9.6.
The prepared purifying agent is used in a riverway of Xijing of Shanghai Bao mountain area Luoshu, Shanghai province, the surface of the purifying agent is uniformly sprayed every day at different rates of 45-65mg/l in total dose per week, and the pH value, turbidity, total phosphorus and chromaticity of water quality are monitored. Before the purifying agent is put in, the water quality pH value is 7.61, the turbidity is 500, the total phosphorus is 1.57ppm, the total nitrogen is 6.14ppm and the chromaticity is turbid and green, and the water quality pH value is 8, the turbidity is 75, the total phosphorus is 0.3ppm, the total nitrogen is 1.1ppm and the chromaticity is light green within 4 weeks after the purifying agent is put in.
Example 3
A purifying agent for deodorizing water in a riverway is prepared from the following raw materials in percentage by weight: 1) adding water into a reaction kettle, adding magnesium oxide while stirring, adding 150 parts of water into 100 parts by weight of magnesium oxide, fully reacting, and when the temperature is reduced to 70 ℃, 2) adding 0.3 part of organic acid (75% glacial acetic acid), and stirring for 30 minutes; 3) then 2 parts of a suspending agent (hydroxypropyl methylcellulose with the viscosity specification of 15,000 mPa.s) are added and stirred for 40 minutes; 4) then, 1 part of microorganism (ammonia nitrogen degrading bacteria and organic phosphorus degrading bacteria) is added and stirred for 5 minutes, and the final purifying agent has the concentration of 59 percent and the pH value of 9.9.
The prepared purifying agent is used in a river channel, the surface is uniformly sprayed every day at different rates of 45-65mg/l of total dosage rate every week, and the pH, turbidity, total phosphorus and chromaticity of water quality are monitored. Before the purifying agent is put in, the pH value of water is 7.61, the turbidity is 125, the total phosphorus is 0.13ppm, the total nitrogen is 1.6ppm and the chromaticity is turbid slightly, and the pH value of the water is 8.2, the turbidity is 10, the total phosphorus is 0.06ppm, the total nitrogen is 0.5ppm and the chromaticity is clear within 4 weeks after the purifying agent is put in.
Example 4
A purifying agent for deodorizing water quality of an aquaculture farm is prepared by the following raw materials in percentage by weight: 1) adding water into a reaction kettle, adding magnesium oxide while stirring, adding 150 parts of water into 100 parts by weight of magnesium oxide, fully reacting, and when the temperature is reduced to 70 ℃, 2) adding 0.3 part of organic acid (75% glacial acetic acid), and stirring for 30 minutes; 3) then 2 parts of a suspending agent (hydroxypropyl methylcellulose with the viscosity specification of 15,000 mPa.s) are added and stirred for 40 minutes; 4) then, 1 part of microorganism (ammonia nitrogen degrading bacteria and organic phosphorus degrading bacteria) is added and stirred for 5 minutes, and the final purifying agent has the concentration of 58 percent and the pH value of 9.9.
The prepared purifying agent is used in Weihai Deming aquaculture farms in Shandong, the surface is uniformly sprayed every day at different rates of 45-65mg/l of total dose rate every week, and the pH, turbidity, total phosphorus and chromaticity of water quality are monitored. Before the purifying agent is put in, the pH value of water is 6.9, ammonia nitrogen is 0.97ppm, nitrite is in an increasing trend in 3-12 weeks, the pH value reaches 0.5ppm in 12 weeks, suspended matters are 87ppm, and chroma is turbid slightly, the pH value of the water is 8, the ammonia nitrogen is 0.4ppm in 12 weeks after the purifying agent is put in, the nitrite is in a stable state in 3-12 weeks, and the pH value is still 0, the suspended matters are 29ppm and the chroma is clear in 12 weeks.
Comparative example 1
This example provides a purifying agent for deodorizing sewage, which is prepared substantially as in example 1, except that a suspending agent and a flocculating agent are not added. The prepared fresh purifying agent is in a viscous slurry form, has slow flow rate, has obvious precipitation phenomenon after being placed for 21 days, and is reduced to the viscous slurry form after being stirred. The purifying agent has poor fluidity and too large putting difficulty, and cannot be used.
Comparative example 2
This example provides a purifying agent for deodorizing sewage, which is prepared substantially as in example 1, except that no organic acid is added. The freshly prepared purifying agent is in a slurry form, the flow rate is relatively normal, obvious precipitation occurs after the purifying agent is placed for 1 day, and the purifying agent is reduced to the slurry form after being stirred. After being placed for 21 days, obvious precipitation appears, and the mixture is in a solid state and is difficult to stir. The purifying agent can only be used after the preparation and before the precipitation, otherwise, the purifying agent cannot be used.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. A purifying agent for aquaculture and river deodorization is characterized in that: the purifying agent is a solid-liquid mixture, the pH value of the solid-liquid mixture is 9.5-10.5, the components of the purifying agent comprise magnesium hydroxide, organic acid, a suspending agent, biological bacteria and water, the mass content of the magnesium hydroxide in the purifying agent is 10-70%, the mass content of the suspending agent is 0.001-5%, the biological bacteria are eutrophic degrading bacteria, and the mass content of the biological bacteria is 0.001-10%; the suspending agent is hydroxypropyl methyl cellulose; the organic acid is glacial acetic acid, citric acid or the combination of the glacial acetic acid and the citric acid; the biological bacteria comprise one or more bacteria selected from ammonia nitrogen and phosphorus degrading bacteria;
the purifying agent is prepared by the following method: the method is implemented as follows: firstly, adding water into a reaction kettle, adding magnesium oxide while stirring, adding organic acid when the temperature is 65-95 ℃, stirring, adding a suspending agent, stirring, adding biological bacteria, and uniformly mixing to obtain the purifying agent, wherein the purifying agent comprises the following raw materials in percentage by mass of 100% of the total mass of all the raw materials: 10-60% of magnesium oxide, 0.04-0.125% of organic acid, 0.0013-0.5% of suspending agent, 0.001-0.5% of biological bacteria and water as well as others.
2. The purifying agent for aquaculture and river deodorization according to claim 1, wherein the purifying agent comprises the following components: in the purifying agent, the mass content of magnesium hydroxide is 20-60%, the mass content of the suspending agent is 0.0013-0.5%, and the mass content of biological bacteria is 0.001-1%.
3. The purifying agent for aquaculture and river channel deodorization according to any one of claims 1 or 2, wherein more than 95% of solid particles in raw materials for preparing the purifying agent are less than or equal to 30 microns.
4. Use of a depurative according to any one of claims 1 to 3 in aquaculture and river deodorization depuration, the total dosage rate per week of the depurative being 45-150 mg/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070705.5A CN109133367B (en) | 2018-09-13 | 2018-09-13 | Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811070705.5A CN109133367B (en) | 2018-09-13 | 2018-09-13 | Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109133367A CN109133367A (en) | 2019-01-04 |
| CN109133367B true CN109133367B (en) | 2020-03-20 |
Family
ID=64825426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811070705.5A Active CN109133367B (en) | 2018-09-13 | 2018-09-13 | Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109133367B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110683595A (en) * | 2019-09-03 | 2020-01-14 | 江苏红膏大闸蟹有限公司 | Purifying agent for aquaculture and river channel deodorization and preparation method thereof |
| CN111066705A (en) * | 2019-12-16 | 2020-04-28 | 江苏红膏大闸蟹有限公司 | Improved river crab ecological breeding method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1059711A (en) * | 1996-08-12 | 1998-03-03 | Daicel Amiboshi Sangyo Kk | Magnesium hydroxide and production of aqueous liquid suspension thereof |
| CN1148570A (en) * | 1996-08-20 | 1997-04-30 | 刘品 | Production of magnesium hydroxide and application thereof |
| CN100375637C (en) * | 2005-05-12 | 2008-03-19 | 中国农业大学 | Biological deodorization and purification agent, and its use |
| CN102583591B (en) * | 2012-01-10 | 2013-10-30 | 沈阳化工大学 | Preparation method for mycelium/caustic calcined magnesite composite printing and dyeing wastewater treating agent |
| CN104591427A (en) * | 2014-12-24 | 2015-05-06 | 苏州市阳澄湖现代农业发展有限公司 | Method for increasing pH value in aquaculture |
| CN104671433B (en) * | 2015-02-09 | 2016-07-06 | 华南理工大学 | A kind of complex microorganism oxygenation agent removing breeding water body ammonia nitrogen and preparation method thereof |
| CN107540101A (en) * | 2017-10-26 | 2018-01-05 | 广东睿洁环保工程有限公司 | A kind of purifying agent for polluted water and its application |
| CN107902766A (en) * | 2017-11-29 | 2018-04-13 | 深圳地天国际生物工程科技有限公司 | Dead powder of deodorization oxygenation anti-theft for aquaculture and preparation method thereof |
-
2018
- 2018-09-13 CN CN201811070705.5A patent/CN109133367B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109133367A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109133367B (en) | Purifying agent suitable for aquaculture and river channel deodorization and preparation method and application thereof | |
| CN104671433A (en) | Compound microbiological oxygenate for removing ammonia nitrogen in aquatic water and preparation method of compound microbiological oxygenate | |
| KR101274071B1 (en) | Red tide removal materials and manufacturing method thereof | |
| CN107935068B (en) | Efficient composite phosphorus removal agent and preparation method thereof | |
| CN104787821A (en) | Industrial sewage treatment agent | |
| CN110316785A (en) | Water remediation agent for controlling cyanobacterial bloom and preparation method thereof and eutrophic water body repairing method | |
| CN107572618A (en) | A kind of water purification agent of purifying aquatic product cultivating water environment | |
| CN109095522B (en) | Sewage deodorizing and purifying agent, preparation method thereof and sewage deodorizing method | |
| CN102765776A (en) | Active biological water purifying agent and preparation method thereof | |
| CN109290340B (en) | Garbage deodorizing and purifying agent, preparation method thereof and garbage deodorizing method | |
| WO2023098663A1 (en) | Stepped sediment modifier for ecological restoration of deepwater rivers and lakes | |
| CN105502650B (en) | A kind of preparation method of aquiculture waste water advanced nitrogen complex solid carbon source filler | |
| CN101412561A (en) | Pearl calcium ion particle and preparation thereof | |
| WO2020192536A1 (en) | Method for efficiently treating nitrogen-containing wastewater based on dnra-anammox immobilized pellets | |
| CN107324434A (en) | A kind of environment-protecting and non-poisonous high efficiency sewage treating agent and preparation method thereof | |
| CN113443722A (en) | Novel efficient medicament, preparation process and application of novel efficient medicament in aquaculture wastewater treatment | |
| CN208577501U (en) | A kind of solid carbon source addition control system | |
| CN111377545A (en) | Water environment body repairing agent for reducing ammonia nitrogen in five types of inferior water | |
| CN101343110B (en) | Controlled release capsule with city appearance water body denitrification dephosphorization function | |
| CN111252906A (en) | Slow-release carbon source, preparation method and wastewater treatment method | |
| CN110897168A (en) | System for preparing edible water-soluble silicon element | |
| CN110897167A (en) | Edible water-soluble silicon element and preparation method thereof | |
| CN109231505A (en) | A kind of preparation method of stick flower fish and water quality improving agent | |
| CN108328861A (en) | The method of slaughterhouse water pollution control | |
| CN106946356A (en) | A kind of method of ammonia nitrogen and nitrite in removal water body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |