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Anonymous users2024-02-12Copper coins soaked in water can kill mosquito larvae.
TOKYO, July 22 (Xinhua) --
Japanese scientists have recently tried to use copper coins to eliminate mosquito larvae, with good results and have avoided the use of insecticides that can make mosquitoes resistant to pesticides.
According to Japan**, scientists at the Japan Copper Center recently used experiments to show that putting copper coins in stagnant water can prevent mosquito larvae in the water from turning into mosquitoes. Scientists kept the larvae of the leopard foot mosquito and the Aedes albopictus mosquito in copper containers for a period of time and found that all the larvae had died before they turned into mosquitoes. 90% of the larvae housed in terrarium can turn into mosquitoes.
Scientists also conducted experiments on underground house mosquitoes. These mosquitoes maintain a strong mobility even in winter, and their larvae are resistant to insecticides. The researchers put the larvae of the subterranean mosquito into a glass container and added copper coins to the container, and soon the larvae of the subterranean mosquito also died.
Scientists have detected copper ions in water that has been added to copper coins. The maximum concentration of copper ions is only 1ppm, which is harmless to humans.
Scientists at the Japan Copper Center believe that copper is more resistant to bacteria when it is not rusty, so it is best to try copper coins to repel mosquitoes, but it is best to use clean new coins.
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Anonymous users2024-02-11It's better to sprinkle some quicklime or disinfectant.
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Anonymous users2024-02-10Fish such as carp and crucian carp can be farmed, and they eat mosquito eggs and spawns, which can prevent mosquito breeding.
To eliminate mosquitoes at home or in the community, please remember to remove the "five-character mantra" of mosquito larval breeding sites
1. Turn: Pour out the stagnant water in small containers such as cylinders, cans, basins, jars, bottles, etc., and place them with the bottom facing up to keep them dry.
2. Filling: Use soil and yellow sand to fill all kinds of potholes, depressions, ditches and other potholes that are easy to accumulate water.
3. Clearing: Remove all kinds of small containers in the environment, such as beverage bottle caps, garbage bags, etc.
4. Dredging: dredging open ditches, sewers, ditches, rivers, etc.
5. Medicine: Stagnant water that cannot be removed, such as rainwater wells, should be put into long-term mosquito killers.
Habits. Jié jué is hatched from eggs laid by female mosquitoes in fresh water. Its chest is wider than its head and abdomen, and it writhes violently from side to side when swimming, swims vertically up and down in the water, feeds on bacteria and single-celled algae in the water, and breathes air. For example, the tail end of the Culex mosquito (house mosquito) has a long snorkel, and the end of the tube is the opening of the respirator.
When breathing, the body is at an angle to the surface of the water so that the breathing tube is perpendicular to the surface of the water; Anopheles mosquitoes (Anopheles mosquitoes) do not have a breathing tube; The respirator at the tail end of the body is open to the surface of the body, and the body is parallel to the surface of the water when breathing; If frightened, dive underwater. After 3 molts, the pupae develop into a pupa that can still be moved at the beginning, but is basically immobile when it is feathered, and then feathers into an adult mosquito.
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Anonymous users2024-02-09Ideally:
Biological control Biological control involves stocking mosquito-eating fish and the application of biological insecticides. For example, willow fish are stocked in ditches, ponds and rivers, ornamental fish are stocked in lotus tanks, Taiping tanks and small pools in hotel parks, ponds, Nitilapia and Chinese betta fish are stocked in drinking water tanks, carp and African crucian carp are stocked in rice paddies and grass carp are stocked in irrigation ditches. For sewage tanks, reservoirs, fire tanks and general pools in the city that cannot be renovated for a while, chemical or biological insecticides such as Bacillus thuringiensis BTI-14 strain or spherobacillus (BS) preparations can be used.
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Anonymous users2024-02-08Put the fish or drizzle oil until the oil film covers the water surface, and add a thick laundry detergent.
Adopt what is appropriate.
Classification of Conditioning Pools:
According to the form, the regulating pool can be divided into round, square, (natural) polygon, etc., and can be built underground or above ground. According to the structure, it is divided into concrete, reinforced concrete, stone structure and natural body. According to the position in the process flow, it is divided into a pre-original wastewater centralized regulating tank, and a plurality of diversion regulating pools and treated water regulating pools are set up according to the nature of the wastewater. >>>More
It can be stored in the freezer compartment of the refrigerator, so the storage time is relatively long. >>>More
If the weather is hot and you can't put it in the refrigerator, you can make salted eggs and store them, which are delicious and can be stored for a longer time. First put the eggs in water and boil, just put the eggs in a pot of cold water, and then put in various spices, salt, ginger, chili, pepper, star anise, etc., and cook for another twenty minutes, after cooking, when the water is cold, put the eggs and water in a closed container to marinate for a week.
I don't understand what you mean by "pushing backwards from the outlet of the outlet to the water level downstream of the dissipation pond for the critical flow", the downstream water level has nothing to do with whether the end of your dissipation tank is a deep digging type or a sill-breaking type or a comprehensive type, and the outlet water level is found out according to the water level and flow relationship curve at the outlet.
It is recommended to use defoamers in a targeted manner, and food additive defoamers may not have a very good defoaming effect in sewage treatment.