Bullfrog farm tail water quality treatment method based on glass pumice

Abstract

The invention discloses a bullfrog farm tail water quality treatment method based on glass pumice, and relates to the technical field of breeding tail water treatment, and the method comprises the following steps: establishing a water quality change rule model of the glass pumice for treating the breeding tail water; according to the water quality change rule model, glass pumice in the optimal proportion is prepared according to the scale of the aquaculture tail water, and the glass pumice is put into the corresponding aquaculture tail water to be purified; the water quality index of the breeding tail water is detected regularly, and when the water quality index reaches the upper limit set value of water quality pollutants, the put glass pumice stone is replaced or the steps are repeated. Compared with a traditional treatment means, the cost can be saved, and the treatment means is ecological and environmentally friendly.

Description

Technical Field

[0001] The invention relates to the technical field of aquaculture tail water treatment, and in particular to a bullfrog breeding farm tail water quality treatment method based on glass pumice. Background Art

[0002] With the rapid development of bullfrog farming, the number of bullfrog farming sites has continued to increase. While driving the development of the rural economy, it has also brought about more serious pollution problems. In the bullfrog breeding process, the bait put in at one time cannot be eaten by all the bullfrogs, and the excrement produced by the bullfrogs gathers together and cannot be degraded in time. The high-density breeding brings about high feed intake and high metabolism, resulting in high COD and high ammonia nitrogen in the water body. There are problems with poor ammonia nitrogen removal and incomplete bacterial and viral elimination during recycling, and there is a risk of disease outbreaks.

[0003] At present, the most effective and fastest way to treat aquaculture tail water is chemical treatment, which generally uses strong oxides such as ozone, calcium hypochlorite, potassium permanganate, etc. to oxidize and sterilize and degrade organic matter. The removal rate of ammonia nitrogen can reach 50-70%. This method has the problem of excessive oxides. If the water treated by chemical treatment is directly recycled, it is easy to cause poisoning of aquaculture products. In addition, the required equipment investment is high, which greatly increases the cost of treatment and subsequent operation and maintenance costs.

[0004] As a porous material, glass pumice has good water treatment performance. It can enhance the filtration and flocculation effects of pollutants through physical, chemical and biological effects. In addition, its huge surface area can provide a place for microorganisms to attach, thereby enhancing the effect of degrading pollution. At present, there are no reports on the treatment of aquaculture wastewater with glass pumice. Therefore, how to apply glass pumice to the field of aquaculture tailwater treatment to reduce the cost of treatment and ensure the ecological and environmental protection of the treatment process is the problem that the applicant wants to solve. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a bullfrog breeding farm tailwater quality treatment method based on glass pumice, which can save costs and has an ecological and environmentally friendly treatment method.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is:

[0007] A method for treating tailwater quality of bullfrog breeding farms based on glass pumice, characterized in that it comprises the following specific steps:

[0008] S1. Establish a water quality change model for aquaculture tailwater treated with glass pumice;

[0009] S2. According to the water quality change law model, the optimal proportion of glass pumice is configured according to the scale of aquaculture tail water, and is put into the corresponding aquaculture tail water for purification;

[0010] S3. Regularly test the water quality index of the aquaculture tail water. When the water quality pollutant upper limit setting value is reached, replace the glass pumice stone put in, or repeat steps S1 and S2.

[0011] A further improvement of the present invention is that step S1 includes the following specific steps:

[0012] a. Collect aquaculture water samples and conduct tests to obtain initial water sample index data;

[0013] b. Divide the aquaculture water sample collected in step b into several portions, and add a certain proportion of glass pumice into each portion, use the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time test the water sample during the purification process to obtain process water sample index data, final water sample index data and purification time;

[0014] c. Compare and analyze the initial water sample index data, process water sample index data, final water sample index data and purification time of each aquaculture water sample in step S2, and establish a water sample change law model;

[0015] A further improvement of the present invention is that the breeding water samples in step a come from the bullfrog breeding pond, the drainage ditch and the circulating water replenishment pond respectively; wherein the water sample collection points of the bullfrog breeding pond include the water inlet, the water outlet, the four corners and the middle part; the water sample collection points of the drainage ditch include the ditch head, the ditch middle and the ditch tail. Sampling is carried out at different locations and different areas and a water sample change law model is established, so as to achieve targeted placement of glass pumice and reduce costs.

[0016] A further improvement of the present invention is that the initial water sample index data, process water sample index data and final water sample index data in step b include: ammonia nitrogen and COD.

[0017] A further improvement of the present invention is that step b includes the following specific steps: dividing the aquaculture water sample collected in step a into several portions and pouring them into detection containers respectively, the detection containers are equipped with a circulating water pump to make the water sample inside the detection container circulate; putting a certain proportion of glass pumice into each detection container, using the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time testing the water sample during the purification process to obtain process water sample index data, final water sample index data and purification time. The above method uses a circulating water pump to form the tail water sample into a circulating flow type or a continuous inflow type, which can fully simulate the environment of the tail water flow state in the aquaculture pond, thereby using a dynamic test method to obtain the actual water quality state of the water sample and its change law, so that the test data is closer to the actual situation.

[0018] A further improvement of the present invention is that in step S3, the upper limit setting values ​​of water pollutants are COD 400 mg / l and ammonia nitrogen 80 mg / l.

[0019] A further improvement of the present invention is that in step S3, the detection cycle is 10d / time. By setting up regular detection after the tail water purification treatment, the changes in water quality in various areas of the farm after the tail water treatment can be fully reflected, and the effect of the tail water treatment can be grasped in time, so that the operator can adjust the tail water treatment method in time according to the comparison between the water quality change effect at each time node and the expected effect, thereby improving the efficiency of the tail water treatment.

[0020] A further improvement of the present invention is that in step S3, the replaced glass pumice can be recycled by incineration or other methods and can be reused in tail water treatment.

[0021] The beneficial effects of the present invention are:

[0022] 1. The present invention places glass pumice in the breeding area and utilizes the purification properties of glass pumice such as physical adsorption and biological purification to treat the breeding tail water. Compared with the chemical treatment method in the prior art, it can not only ensure that the tail water meets the standards after treatment, but also allow the treated tail water to be recycled to achieve sustainable development of ecological breeding.

[0023] 2. The present invention can fully extract the water quality change law of each detection point in each detection area by reasonably dividing the detection points according to the breeding stage, detection location and detection time. At the same time, a circulating water pump can be used to flow the water sample in the detection container to make the water sample state fit the actual environment, thereby improving the scientific nature of the water quality detection data and fully understanding the water quality situation and change law in the breeding area.

[0024] 3. The present invention can fully reflect the water quality status of tail water treatment by setting multiple detection time nodes after tail water purification, so that operators can make timely adjustment measures based on the comparison between the tail water treatment effect at each time node and the expected effect, thereby speeding up the efficiency of tail water treatment. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described in detail below through specific embodiments:

[0026] Example 1

[0027] A method for treating tailwater quality of bullfrog breeding farms based on glass pumice comprises the following specific steps:

[0028] S1. Establish a water quality change model for aquaculture tailwater treated with glass pumice;

[0029] S2. According to the water quality change law model, the optimal proportion of glass pumice is configured according to the scale of aquaculture tail water, and is put into the corresponding aquaculture tail water for purification;

[0030] S3. Regularly test the water quality index of the aquaculture tail water. When the water quality pollutant upper limit setting value is reached, replace the glass pumice stone put in, or repeat steps S1 and S2.

[0031] Specifically, step S1 includes the following specific steps:

[0032] a. Collect aquaculture water samples and conduct tests to obtain initial water sample index data;

[0033] b. Divide the aquaculture water sample collected in step b into several portions, and add a certain proportion of glass pumice into each portion, use the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time test the water sample during the purification process to obtain process water sample index data, final water sample index data and purification time;

[0034] c. Compare and analyze the initial water sample index data, process water sample index data, final water sample index data and purification time of each aquaculture water sample in step S2, and establish a water sample change law model;

[0035] Specifically, the breeding water samples in step a come from the bullfrog breeding pond, drainage ditch and circulating water replenishment pool respectively; the water sample collection points of the bullfrog breeding pond include the water inlet, water outlet, four corners and the middle part; the water sample collection points of the drainage ditch include the ditch head, ditch middle and ditch tail. Sampling at different locations and different areas and establishing a water sample change law model can achieve targeted placement of glass pumice and reduce costs.

[0036] Specifically, the initial water sample index data, process water sample index data and final water sample index data in step b include: ammonia nitrogen and COD.

[0037] Specifically, step b includes the following specific steps: dividing the aquaculture water sample collected in step a into several portions, and pouring them into detection containers respectively, the detection containers are equipped with a circulating water pump to make the water samples inside the detection containers circulate; putting a certain proportion of glass pumice into each detection container, using the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time testing the water samples during the purification process to obtain process water sample index data, final water sample index data and purification time. The above method uses a circulating water pump to form the tail water sample into a circulating flow type or a continuous inflow type, which can fully simulate the environment of the tail water flow state in the aquaculture pond, thereby using a dynamic test method to obtain the actual water quality state of the water sample and its change law, so that the test data is closer to the actual situation.

[0038] Specifically, in step S3, the upper limit setting values ​​of water pollutants are COD 400 mg / l and ammonia nitrogen 80 mg / l.

[0039] Specifically, in step S3, the detection cycle is 10d / time. By setting up regular detection after the tail water purification treatment, the changes in water quality in various areas of the farm after the tail water treatment can be fully reflected, and the effect of the tail water treatment can be grasped in time, so that the operator can compare the water quality change effect at each time node with the expected effect, and adjust the tail water treatment method in time, thereby improving the efficiency of the tail water treatment.

[0040] Specifically, in step S3, the replaced glass pumice can be recycled by incineration or other methods, and can be reused in tail water treatment.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for treating the tailwater quality of bullfrog breeding farms based on glass pumice, characterized in that: The specific steps include: S1. Establish a water quality change model for aquaculture tailwater treated with glass pumice; S2. According to the water quality change law model, the optimal proportion of glass pumice is configured according to the scale of aquaculture tail water, and is put into the corresponding aquaculture tail water for purification; S3. Regularly test the water quality index of the aquaculture tail water. When the water quality pollutant upper limit setting value is reached, replace the glass pumice stone put in, or repeat steps S1 and S2.

2. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 1 is characterized in that: Step S1 includes the following specific steps: a. Collect aquaculture water samples and conduct tests to obtain initial water sample index data; b. Divide the aquaculture water sample collected in step b into several portions, and add a certain proportion of glass pumice into each portion, use the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time test the water sample during the purification process to obtain process water sample index data, final water sample index data and purification time; c. Compare and analyze the initial water sample index data, process water sample index data, final water sample index data and purification time of each aquaculture water sample in step S2, and establish a water sample change law model.

3. A method for treating tailwater quality of bullfrog breeding farms based on glass pumice according to claim 2, characterized in that: The breeding water samples in step a come from the bullfrog breeding pond, drainage ditch and circulating water replenishment pool respectively; the water sample collection points of the bullfrog breeding pond include the water inlet, water outlet, four corners and the middle part; the water sample collection points of the drainage ditch include the ditch head, ditch middle and ditch tail. Sampling and establishing a water sample change law model for different locations and different areas can achieve targeted placement of glass pumice and reduce costs.

4. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 2, characterized in that: The initial water sample index data, process water sample index data and final water sample index data in step b include: ammonia nitrogen and COD.

5. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 2, characterized in that: Step b includes the following specific steps: dividing the aquaculture water sample collected in step a into several portions and pouring them into detection containers respectively, the detection containers are equipped with a circulating water pump to circulate the water samples inside the detection containers; putting a certain proportion of glass pumice into each detection container, using the glass pumice to adsorb and purify the pollutants in the aquaculture water sample, and at the same time testing the water samples during the purification process to obtain process water sample index data, final water sample index data and purification time.

6. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 1, characterized in that: In step S3, the upper limit setting values ​​of water pollutants are COD 400 mg / l and ammonia nitrogen 80 mg / l.

7. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 1, characterized in that: In step S3, the detection cycle is 10 days / time.

8. The method for treating the tailwater quality of bullfrog breeding farms based on glass pumice according to claim 1, characterized in that: In step S3, the replaced glass pumice can be recycled by incineration or other methods and can be reused in tail water treatment.