CN113072224A - Method for purifying and treating polluted water into aquaculture water - Google Patents

Method for purifying and treating polluted water into aquaculture water Download PDF

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Publication number
CN113072224A
CN113072224A CN202110390648.4A CN202110390648A CN113072224A CN 113072224 A CN113072224 A CN 113072224A CN 202110390648 A CN202110390648 A CN 202110390648A CN 113072224 A CN113072224 A CN 113072224A
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water
pond
jin
day
pool
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CN113072224B (en
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马庆涛
马瑞湖
马楚平
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Shantou Yuerui Aquaculture Co ltd
Shantou Kangshun Planting And Breeding Professional Cooperative
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Shantou Yuerui Aquaculture Co ltd
Shantou Kangshun Planting And Breeding Professional Cooperative
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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
    • 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
    • C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • C02F1/64—Heavy metal compounds of iron or manganese
    • 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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • 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
    • C02F2303/04—Disinfection
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F7/00—Aeration of stretches of water
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

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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)

Abstract

A method of purifying contaminated water into aquaculture water, comprising the steps of: (1) after the pond water left in the pond is pumped dry, digging out the sludge at the bottom of the pond, scattering bleaching powder to the bottom of the pond in a dry mode, and then drying the bottom of the pond in the sun; (2) after the bottom of the pond is sunned, the pond is filled with water to the depth of 80-100 cm; on the day of water inlet, spraying a copper-iron mixture into the pool water; (3) splashing sodium trichloroisocyanurate into the pool water the next day after water inflow; (4) splashing the deltamethrin into the pool water in the seventh day after water enters; (5) pouring EDTA into the pond water the tenth day after water inflow; (6) in the fourteenth day after water feeding, a waterwheel type aerator is started to stir the pool water, and the fermented tea seed cakes are splashed into the pool water; (7) and observing the pond water eighteenth day after water inflow, and finishing water treatment if copepod zooplankton exists in the pond water. The invention can purify and process the water with serious pollution into the water for aquaculture, thereby realizing the water taking from the polluted rivers nearby and meeting the water demand of the aquaculture industry.

Description

Method for purifying and treating polluted water into aquaculture water
Technical Field
The invention relates to the technical field of water treatment, in particular to a method for purifying and treating polluted water into aquaculture water.
Background
Due to the substandard discharge of industrial sewage and domestic wastewater in the river regions, the water body of some rivers is seriously polluted. In recent years, the water body for practicing rivers is seriously polluted and has poor water quality, so that a sufficient water source for aquaculture is difficult to obtain, and the normal development and development of aquaculture industry at two sides of the practicing rivers are seriously restricted, so that the problem that how to provide sufficient aquaculture water for the aquaculture industry needs to be solved urgently is solved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for purifying and processing polluted water into aquaculture water, and by adopting the method, the polluted water can be purified and processed into the aquaculture water, so that water can be taken from the polluted river nearby, and the water demand of the aquaculture industry can be met. The technical scheme is as follows:
a method for purifying and treating polluted water into aquaculture water, which is characterized by comprising the following steps:
(1) after the pond water left in the pond is pumped dry, digging out the sludge at the bottom of the pond, scattering bleaching powder to the bottom of the pond with the dug-out sludge, and then drying the bottom of the pond for 20 days to one month;
(2) after the bottom of the pond is sunned, the pond is filled with water to the depth of 80-100 cm; on the day of water inflow, spraying copper-iron mixture into the pool water, wherein the spraying amount of the copper-iron mixture is 1.21-1.47 jin/mu of copper sulfate and 0.45-0.55 jin/mu of ferrous sulfate;
(3) splashing sodium trichloroisocyanurate into the pool water the next day after water feeding to kill pathogenic bacteria in the pool water, wherein the splashing amount of the sodium trichloroisocyanurate is 1.5-2.5 jin/mu;
(4) on the seventh day after water inflow, spraying the bromethrin into the pool water, wherein the spraying amount of the bromethrin is 0.04-0.05 jin/mu;
(5) on the tenth day after water inflow, EDTA is sprayed into the pool water, and the spraying amount of the EDTA is 0.4-0.6 jin/mu;
(6) in the fourteenth day after water feeding, a waterwheel type aerator is started to stir the pool water, and the fermented tea seed cakes are splashed into the pool water;
(7) and observing the pond water eighteenth day after water inflow, and finishing water treatment if copepod zooplankton exists in the pond water.
The water fed in the step (2) is generally poor five types of water, for example, the aquaculture pond of the applicant is positioned in the middle and lower reaches of the Yangtze river, and the water introduced from the middle and lower reaches of the Yangtze river is generally poor five types of water.
In the preferred scheme, the step (3-2) is added between the step (3) and the step (4), and the Vc glucose and the detoxification and stress-relief agent are sprinkled into the pond water on the third day after water inflow, wherein the sprinkling amount of the Vc glucose is 3-5 jin/mu (preferably 4 jin/mu), and the sprinkling amount of the detoxification and stress-relief agent is 0.4-0.5 jin/mu (preferably 0.5 jin/mu). The purpose of sprinkling Vc glucose and detoxification and application of warfarin is to activate the pond water and remove the residues of some chemicals originally put into the pond water.
In the step (1), the bleaching powder is scattered at the bottom of the pool and then decomposed in water to release hypochlorous acid which immediately releases nascent oxygen, and the bleaching powder has strong sterilization and harmful organism killing effects. Preferably, in the step (1), the dry scattering amount of the bleaching powder is 15-25 jin/mu. More preferably, the amount of bleaching powder to be scattered is 20 jin/mu. Typically, bleaching powders have an available chlorine content of around 30% (available chlorine content means the percentage of chlorine with disinfection capacity to the total chlorine). In the step (1), dug sludge at the bottom of the pool is usually placed on a bank and dried in the sun, and the bank can be protected or used for other purposes.
In the step (2), the copper-iron mixture is prepared by matching copper sulfate (with a chemical formula of CuSO4 & 5H 2O) and ferrous sulfate. Copper sulfate can kill various bacteria, parasites, algae, moss and other aquatic enemy organisms, and the principle is that Cu is used2+The protein of the organism is denatured and died. Ferrous sulfate is used as adjuvant drug, has astringent effect, and mainly is cupric sulfate for killing parasite and eliminating obstacle. After the copper-iron mixture is applied, the water color becomes clear and transparent. In the preferable step (2), the splashing amount of the copper-iron mixture is 1.34 jin/mu of copper sulfate and 0.5 jin/mu of ferrous sulfate.
In the step (3), trichloroisocyanuric acid sodium (strong chlorine) is used as a bottom-decomposition disinfectant, is an oxidation type biocide, has extremely strong sterilization and bleaching effects, can effectively prevent and treat fish diseases caused by bacteria, fungi and algae in aquaculture, has obvious curative effect on viral diseases of fish, and can be used for pond cleaning, fish seed disinfection, water body disinfection, fish tool disinfection and the like in aquaculture of various fishes, prawns, river crabs, bullfrogs and the like. After the sodium trichloroisocyanurate is splashed, the water surface around the pond has foams, and the transparency of the water body is increased (the water body becomes clear). In the preferable step (3), the sprinkling amount of the sodium trichloroisocyanurate is 2 jin/mu.
In the step (4), the purpose of splashing the bromethrin is to kill the mixed shrimps in the water body. The brimethrin is used for aquaculture, can prevent and treat parasitic diseases of fish such as sinnaea, lernaea, clarias fuscus, cladocera and the like, and can kill wild shrimp in the pond. Preferably, in the step (4), the sprinkling amount of the bromethrin is 0.05 jin/mu.
In the step (5), the EDTA is used for neutralizing heavy metal ions in the water body and simultaneously increasing the pH value of the water body. EDTA (ethylenediaminetetraacetic acid) is an organic compound of formula C10H16N2O8It is a compound capable of reacting with Mg2+、Ca2+、Mn2+、Fe2+And divalent metal ion-binding chelating agents. Generally, after a copper-iron mixture and sodium trichloroisocyanurate are used, foam exists on the water surface, and the transparency of the water body is increased (the water body becomes clear); after the use of EDTA, chelates are formed and the water begins to become cloudy (if the water is still clear, the addition of EDTA may be considered). Preferably, in the step (5), the amount of EDTA sprayed is 0.5 jin/mu.
In the step (6), the fermented tea seed cakes are splashed mainly to kill trash fish and trash shrimp and are colored with water. The tea seed cake is residue of oil squeezed from wild camellia oil fruit, and contains 12-18% tea saponin. Tea saponin is a hemolytic toxin which can melt red blood cells of fish, so that wild fishes, loaches, snails, mussels, frog eggs, tadpoles and a part of aquatic insects can be killed. The tea seed cake has high protein content, and can play a role in increasing fertilizer for ponds with less sludge and barren bottom. The tea seed cake as a green medicine can be automatically decomposed without toxic residue, has no influence on human body, and is safe to use. The tea seed cake does not kill aquatic weeds and has growth promoting effect on the aquatic weeds; the tea seed cake prawn and crab larvae have no side effect, and the pond yielding rate in the process of breeding shrimp larvae and breeding juvenile crabs is high; the tea seed cake can also play a role in fertilizing water. After fermented tea seed cakes are sprinkled on the fourteenth day after water enters, the water color is green or tawny and the like due to the propagation of unicellular algae in the water; meanwhile, white copepod zooplankton in groups can be bred and grown in the water body.
Preferably, in the step (6), the water in the stirring pool of the waterwheel type aerator is started for 12 hours.
Preferably, in the step (6), the sprinkling amount of the fermented tea seed cakes is 50-100 jin/mu (based on the dry weight of the tea seed cakes before fermentation). More preferably, in the step (6), the sprinkling amount of the fermented tea seed cake is 75 jin/mu.
More preferably, in the step (6), the fermented tea seed cake is sprinkled in the form of tea seed cake suspension, and the specific method comprises the following steps: pulverizing tea seed cake, adding water, soaking for 24-48 hr, and fermenting; adding quicklime before sprinkling, mixing and heating, wherein the addition amount of the quicklime is 15-35 jin/mu (preferably 20 jin/mu), and obtaining tea seed cake suspension; and sprinkling the tea seed cake suspension into the pool water. After the quicklime is added into the tea seed cakes after soaking fermentation, the quicklime heats when meeting water and makes the water alkaline, so that the release and dissolution of tea saponin in the tea seed cakes can be promoted.
In the preferable scheme, after fermented tea seed cakes are sprinkled on the fourteenth day after water is fed in, if the cladocera zooplankton is propagated and grown in a large quantity (in this case, the water body is dark red cloud), the cypermethrin is sprinkled into the pool water, and the sprinkling quantity of the cypermethrin is 0.04-0.06 jin/mu (preferably 0.05 jin/mu). The purpose of splashing cypermethrin is to kill cladocera zooplankton.
And (7) after the water treatment is finished, preparing to put seedlings.
In the step (7), if the water color is relatively clear (the water color is relatively clear which indicates that beneficial unicellular algae such as chlorella, diatom and the like in the water body cannot grow and the water color is still relatively clear), and the average concentration of ammonia nitrogen is more than 0.25mg/L, then the potassium hydrogen persulfate composite salt is splashed into the pool water, and the splashing amount is 2.0-3.0 jin/mu (preferably 2.5 jin/mu). The content of the hydrogen persulfate in the adopted potassium hydrogen persulfate composite salt is generally 10%, and the potassium hydrogen persulfate plays a role in sterilizing and improving the bottom.
The method can purify and process the seriously polluted water into the aquaculture water, thereby realizing that water is taken from the polluted rivers nearby, meeting the water demand of the aquaculture industry, and having important significance for promoting the normal development and development of the aquaculture industry of river basins with seriously polluted water.
Detailed Description
Example 1
In this embodiment, the method for purifying and treating the polluted water into the aquaculture water comprises the following steps:
(1) after the pond water left in the pond is pumped and dried, digging out the sludge at the bottom of the pond, scattering bleaching powder (the scattering amount of the bleaching powder is 20 jin/mu) to the bottom of the pond with the dug-out sludge in a dry mode, and then drying the bottom of the pond for 25 days;
(2) after the bottom of the pond is sunned, the pond is filled with water to the depth of 80 cm; on the day of water inflow, spraying copper-iron mixture into the pool water, wherein the spraying amount of the copper-iron mixture is 1.34 jin/mu of copper sulfate and 0.5 jin/mu of ferrous sulfate;
(3) splashing sodium trichloroisocyanurate into the pool water the next day after water feeding to kill pathogenic bacteria in the pool water, wherein the splashing amount of the sodium trichloroisocyanurate is 2 jin/mu;
on the third day after water inflow, spraying Vc glucose and detoxification and stress-relief agent to the pond water, wherein the spraying amount of the Vc glucose is 4 jin/mu, and the spraying amount of the detoxification and stress-relief agent is 0.5 jin/mu;
(4) on the seventh day after water inflow, spraying the bromethrin into the pool water, wherein the spraying amount of the bromethrin is 0.05 jin/mu;
(5) on the tenth day after water inflow, EDTA is sprayed into the pool water, and the spraying amount of the EDTA is 0.5 jin/mu;
(6) in the fourteenth day after water inflow, a waterwheel type aerator is started to stir the pool water (the starting time of the waterwheel type aerator for stirring the pool water is 12 hours), and fermented tea seed cakes are splashed into the pool water;
in the step (6), the sprinkling amount of the fermented tea seed cakes is 75 jin/mu (according to the dry weight of the tea seed cakes before fermentation);
the fermented tea seed cake is sprinkled in the form of tea seed cake suspension, and the specific method comprises the following steps: crushing the tea seed cakes, adding water, and soaking and fermenting for 48 hours; adding quicklime before sprinkling, mixing and thermalizing, wherein the adding amount of the quicklime is 20 jin/mu, and obtaining tea seed cake suspension; sprinkling the tea seed cake suspension into the pool water;
(7) and observing the pond water eighteenth day after water inflow, and finishing water treatment if copepod zooplankton exists in the pond water.
The water introduced in the step (2) is water introduced from the downstream of the Rongjiang river (introduced from the downstream of the Rongjiang river in 1 month in 2019), and belongs to the fifth-class water. Through water quality detection, the average concentration of chemical oxygen demand, ammonia nitrogen and total phosphorus in introduced water is 39mg/L, 4.26mg/L and 0.298 mg/L; the water color is gray or even black, and the odor is generated.
The water quality detection result of the treated pond water is as follows: the average concentration of chemical oxygen demand is 0.34mg/L, the average concentration of ammonia nitrogen is 0.106mg/L, and the average concentration of total phosphorus is 0.048 mg/L. The water color after treatment is green or dark brown, and has no peculiar smell.
And (7) after the water treatment is finished, preparing fry stocking (such as stocking fry).
In addition, after fermented tea seed cakes are sprinkled on the fourteen days after water is fed, if cladocera zooplankton breed and grow in a large quantity (in this case, the water body is dark red cloud), cypermethrin is sprinkled into the pool water, and the sprinkling quantity of the cypermethrin is 0.05 jin/mu.
In the step (7), if the water color is relatively clear (the water color is relatively clear which indicates that beneficial unicellular algae such as chlorella, diatom and the like in the water body cannot grow and the water color is still relatively clear), and the average concentration of ammonia nitrogen is more than 0.25mg/L, then the potassium hydrogen persulfate composite salt is splashed into the pool water, and the splashing amount is 2.5 jin/mu.
Example 2
In this embodiment, the method for purifying and treating the polluted water into the aquaculture water comprises the following steps:
(1) after the pond water left in the pond is pumped and dried, digging out the sludge at the bottom of the pond, scattering bleaching powder (the scattering amount of the bleaching powder is 20 jin/mu) to the bottom of the pond with the dug-out sludge in a dry mode, and then drying the bottom of the pond for 25 days;
(2) after the bottom of the pond is sunned, the pond is filled with water to the depth of 90 cm; on the day of water inflow, spraying copper-iron mixture into the pool water, wherein the spraying amount of the copper-iron mixture is 1.4 jin/mu of copper sulfate and 0.52 jin/mu of ferrous sulfate;
(3) splashing sodium trichloroisocyanurate into the pool water the next day after water feeding to kill pathogenic bacteria in the pool water, wherein the splashing amount of the sodium trichloroisocyanurate is 2.5 jin/mu;
on the third day after water inflow, spraying Vc glucose and detoxification and stress-relief agent to the pond water, wherein the spraying amount of the Vc glucose is 4.5 jin/mu, and the spraying amount of the detoxification and stress-relief agent is 0.45 jin/mu;
(4) on the seventh day after water inflow, spraying the bromethrin into the pool water, wherein the spraying amount of the bromethrin is 0.05 jin/mu;
(5) on the tenth day after water inflow, EDTA is sprayed into the pool water, and the spraying amount of the EDTA is 0.6 jin/mu;
(6) in the fourteenth day after water inflow, a waterwheel type aerator is started to stir the pool water (the starting time of the waterwheel type aerator for stirring the pool water is 12 hours), and fermented tea seed cakes are splashed into the pool water;
in the step (6), the sprinkling amount of the fermented tea seed cakes is 90 jin/mu (according to the dry weight of the tea seed cakes before fermentation);
the fermented tea seed cake is sprinkled in the form of tea seed cake suspension, and the specific method comprises the following steps: crushing the tea seed cakes, adding water, and soaking and fermenting for 48 hours; adding quicklime before sprinkling, mixing and thermalizing, wherein the adding amount of the quicklime is 25 jin/mu, and obtaining tea seed cake suspension; sprinkling the tea seed cake suspension into the pool water;
(7) and observing the pond water eighteenth day after water inflow, and finishing water treatment if copepod zooplankton exists in the pond water.
The water introduced in the step (2) is water introduced from the downstream of the Rodgelet river (introduced from the Rodgelet river in 1 month 2020), and through water quality detection, the average concentration of chemical oxygen demand in the introduced water is 37mg/L, the average concentration of ammonia nitrogen is 1.93mg/L, and the average concentration of total phosphorus is 0.154 mg/L. Compared with the water quality improved in the same period of 2019, the water quality reaches the V-type standard of the surface water environment.
The water quality detection result of the treated pond water is as follows: the average concentration of chemical oxygen demand is 0.31mg/L, the average concentration of ammonia nitrogen is 0.117mg/L, and the average concentration of total phosphorus is 0.045 mg/L.
And (7) after the water treatment is finished, preparing fry stocking (such as stocking fry).
In addition, after fermented tea seed cakes are sprinkled on the fourteen days after water is fed, if cladocera zooplankton breed and grow in a large quantity (in this case, the water body is dark red cloud), cypermethrin is sprinkled into the pool water, and the sprinkling quantity of the cypermethrin is 0.06 jin/mu.
In the step (7), if the water color is relatively clear (the water color is relatively clear which indicates that beneficial unicellular algae such as chlorella, diatom and the like in the water body cannot grow and the water color is still relatively clear), and the average concentration of ammonia nitrogen is more than 0.25mg/L, then the potassium hydrogen persulfate composite salt is splashed into the pool water, and the splashing amount is 2.8 jin/mu.

Claims (10)

1. A method for purifying and treating polluted water into aquaculture water, which is characterized by comprising the following steps:
(1) after the pond water left in the pond is pumped dry, digging out the sludge at the bottom of the pond, scattering bleaching powder to the bottom of the pond with the dug-out sludge, and then drying the bottom of the pond for 20 days to one month;
(2) after the bottom of the pond is sunned, the pond is filled with water to the depth of 80-100 cm; on the day of water inflow, spraying copper-iron mixture into the pool water, wherein the spraying amount of the copper-iron mixture is 1.21-1.47 jin/mu of copper sulfate and 0.45-0.55 jin/mu of ferrous sulfate;
(3) splashing sodium trichloroisocyanurate into the pool water the next day after water feeding to kill pathogenic bacteria in the pool water, wherein the splashing amount of the sodium trichloroisocyanurate is 1.5-2.5 jin/mu;
(4) on the seventh day after water inflow, spraying the bromethrin into the pool water, wherein the spraying amount of the bromethrin is 0.04-0.05 jin/mu;
(5) on the tenth day after water inflow, EDTA is sprayed into the pool water, and the spraying amount of the EDTA is 0.4-0.6 jin/mu;
(6) in the fourteenth day after water feeding, a waterwheel type aerator is started to stir the pool water, and the fermented tea seed cakes are splashed into the pool water;
(7) and observing the pond water eighteenth day after water inflow, and finishing water treatment if copepod zooplankton exists in the pond water.
2. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: and (3) adding the step (3-2) between the step (3) and the step (4), splashing Vc glucose and detoxification and stress-relief agent into the pond water on the third day after water is fed, wherein the sprinkling amount of the Vc glucose is 3-5 jin/mu, and the sprinkling amount of the detoxification and stress-relief agent is 0.4-0.5 jin/mu.
3. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (1), the dry scattering amount of the bleaching powder is 15-25 jin/mu.
4. A method of purifying contaminated water into aquaculture water according to claim 3, wherein: in the step (1), the dry scattering amount of the bleaching powder is 20 jin/mu.
5. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (2), the splashing amount of the copper-iron mixture is 1.34 jin/mu of copper sulfate and 0.5 jin/mu of ferrous sulfate; in the step (3), the sprinkling amount of the sodium trichloroisocyanurate is 2 jin/mu; in the step (4), the splashing amount of the brommethrin is 0.05 jin/mu; in the step (5), the amount of EDTA sprayed is 0.5 jin/mu.
6. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (6), the starting time of the waterwheel type aerator stirring the water in the pool is 12 hours.
7. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (6), the sprinkling amount of the fermented tea seed cakes is 50-100 jin/mu.
8. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (6), the fermented tea seed cake is sprinkled in the form of tea seed cake suspension, and the specific method comprises the following steps: pulverizing tea seed cake, adding water, soaking for 24-48 hr, and fermenting; adding quicklime before sprinkling, mixing and thermalizing, wherein the adding amount of the quicklime is 15-35 jin/mu, and obtaining tea seed cake suspension; and sprinkling the tea seed cake suspension into the pool water.
9. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: after fermented tea seed cakes are sprinkled on the fourteenth day after water is fed, if cladocera zooplankton is propagated and grown in a large quantity, cypermethrin is sprinkled into the pond water, and the sprinkling quantity of the cypermethrin is 0.04-0.06 jin/mu.
10. A method of purifying contaminated water into aquaculture water according to claim 1, wherein: in the step (7), if the water color is clear and the average concentration of ammonia nitrogen is more than 0.25mg/L when the water color is observed, then spraying the potassium hydrogen persulfate composite salt into the pool water, wherein the spraying amount of the potassium hydrogen persulfate composite salt is 2.0-3.0 jin/mu.
CN202110390648.4A 2021-04-12 2021-04-12 Method for purifying polluted water into aquaculture water Active CN113072224B (en)

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