What kind of plant is this?
It has been determined that the concentration of heavy metals concentrated in some plant tissues is more than 100,000 times higher than the concentration in the surrounding water. People often use the ecological functions of certain plants to purify pollutants, effectively removing toxins in sewage and achieving the purpose of purifying water quality. Water hyacinth, cattails and reeds are widely used to treat sewage and absorb high concentrations of heavy metals such as cadmium, copper and zinc in sewage.
Industrial and mining wastewater is one of the sources of environmental pollution. Because Typha can withstand high concentrations of heavy metals and has strong adaptability, fast growth, and strong enrichment ability, it has received attention and attention, and has been widely used in the treatment of environments polluted by industrial and mining wastewater. Cattail plants can also effectively purify phosphorus, nitrogen, dichromate, total suspended solids and other pollutants in urban domestic sewage and industrial and mining wastewater.
Water hyacinth is a good plant for monitoring environmental pollution. It can monitor whether there is arsenic in the water, and can also purify the water of harmful substances such as mercury, cadmium, and lead. During the growth process, it can absorb a large amount of nutrients such as nitrogen, phosphorus and some heavy metal elements in the water body. Water hyacinth blue is more ideal for purifying industrial wastewater or domestic sewage containing more organic matter.
Reeds can absorb phosphorus from the water and inhibit the growth of blue algae. The large area of reeds not only regulates the climate and conserves water resources, but also creates a good wetland ecological environment and provides a home for birds to inhabit, feed, and breed. The leaves, stems, and rhizomes of the reed all have ventilation tissues and can purify sewage.
Qin He said: "I think the plants found in the pipes look very much like water hyacinth."
Shi Rui said: "Let me check."
Hazards: Restricting the flow of water bodies, the water bodies become stinky without sunlight, reducing the amount of dissolved oxygen in the water bodies, inhibiting the growth of plankton, and destroying the ecological environment of rivers. It provides a breeding ground for germs such as schistosomiasis, encephalitis and influenza, breeds mosquitoes and flies, and provides opportunities for mosquito larvae to breathe and reproduce. Destroy drinking water resources. Due to the blockage, the water body cannot flow freely, and various pollution sources such as heavy metal elements and other trace elements that are harmful to the human body cannot be effectively removed, and people directly or indirectly absorb polluted water sources. Covering the water surface also increases the evaporation of water, which is 8-10 times higher than the evaporation of the open water surface, causing water source loss. Impact on fresh water quality at water source collection points. A large amount of water hyacinth covering the water will increase the acidity of the water until it is no longer drinkable.
Treatment methods: Prevention and control of water pollution: Control the discharge of domestic sewage and the orderly discharge of industrial and agricultural wastewater. When discharge is really necessary, it must be treated with pollution-free water before being discharged. Mechanical method: For waters where water hyacinth is more harmful, relevant machinery can be used to destroy and break it, expand the light area of the water body, increase the flow of the water body, and ensure the smooth progress of breeding, fishing and shipping. Manual removal method: Use manpower and material resources to directly pick up the water hyacinth and transport it to land for removal. This is also the most commonly used method at the beginning of the period, and it works best for small water surfaces. If the water area is too large, the cost of manpower and material resources will be too high, and its use is not recommended. Biological control method: In late spring or early summer, when the minimum temperature rises steadily to above 13°C, adult blue weevils are released. Certain prevention and control purposes can be achieved.
Qin He said: "I think it is like this. The saw-toothed mole eats the mud fly, and the water ray eats the water ray. The saw-toothed mole finds the water ray and wraps it with its tail. The water ray finds the mud fly and wraps it in its wings. They go to the lake Side, saw-toothed mole and water ray swap.”
Shi Rui said: "Are they in a symbiotic relationship?"
Xia Yueling said: "There are several typical symbiotic relationships. For example, clownfish live between the tentacles of sea anemones. Gobies and shrimps. Birds catch parasites from crocodiles. Clownfish live between the tentacles of sea anemones. , these fish can prevent the sea anemone from being eaten by other fish, and the sea anemone has stinging cell tentacles that can protect the clownfish from being preyed on, and the clownfish itself secretes a mucus on the surface of the body to protect itself Not harmed by sea anemones.
The goby species can form a symbiosis with shrimp shrimps. Shrimps will dig holes in the sand and clean them. These two creatures live in this cave. Shrimps are almost completely blind and therefore will become very vulnerable to natural enemies at the bottom of the water. In critical situations, tigers The fish touches the shrimp with its tail to warn them that they are in danger, and both creatures quickly retreat into their burrows to protect themselves.
In the terrestrial environment, there is a kind of bird that is famous for its ability to prey on parasites on crocodiles. Crocodiles also welcome birds to search for parasites on their bodies and even open their jaws so that birds can safely enter the crocodile's mouth for food. , not only is this a ready source of food, it is also a safe environment as many predators are afraid to attack these birds around alligators. "
Saw-toothed moles eat mud flies, and water rays eat water hyacinths. How did they live before mutual benefit?
Qin He said: "This used to be a mud field, but now it has been transformed into steel concrete. Mud flies have to look for it in the undeveloped areas around the lake. There used to be a small amount of water hyacinth in the lake, but due to the leakage of pollutants from the Beili Plant, Water hyacinth blue mutated and was largely eliminated.”
Deng Fei said: "But why is it found here?"
Xia Yueling said: "Things in the lake ran into the pipe..."
Deng Fei said: "Is this place connected to the lake?"
Shi Rui said: "Even if it is connected, it will not run into the pipeline."
Xia Yueling said: "The pipeline has an inlet for water replenishment, look there."
They walked to the circulating water replenishment port. The location here is high. No lake water will enter.
Qin He went up the ladder, and Shi Rui quickly went to hold the ladder up. "Manager Qin, if you want to see anything, I can just go up and see it."
Qin He said: "There are some moss-like plants outside. It may be that water has submerged this place from the outside."
Shi Rui said: "Is that a flood?"
Deng Fei said: "It turns out that there was a problem with underground drainage, and the basement was flooded."
Qin He said: "That's right. Water hyacinth comes in from here."
Shi Rui said: "But the lake is separated from here. It is not connected together."
They looked around again.
Put a float guardrail on the ground.
Xia Yueling said: "What are these? They look like some round balls, and they are connected by ropes."
Qin He said: "The floating guardrail is placed in the lake to warn people not to enter this area."
"You see there are some traces of water hyacinth blue here." Qin He said.
Shi Rui said, "So that's it. The mutated water hyacinth blue is in the lake water and stuck to the float guardrail. The staff put the guardrail away and put it in the basement. When it rains heavily, the water surface rises and reaches the water supply pipe. The mutated water hyacinth eye is Blue goes into pipes circulating water.”
Deng Fei said: "It's only been a few times since the water broke out, but the saw-toothed mole and water ray have already developed a symbiotic and mutual-help relationship?"
Qin He said: "I don't understand. But the entire ecosystem is destroyed. The relationship between various species has also changed."
