Everyone has different opinions and understandings about the quality of composition. When the moonlight shines, I choose the brightest cup; when the afterglow fades, I embrace the warmest one; when the red leaves are scorching, I pick up the hottest piece; when the desolate grass, I pick the brightest bunch; in the long life, I want to pick up the most important thing in the world. Let’s take a look at the 400-word essay on visiting a water plant brought to you by A Bundle of Green Grass.
【Part 1】
Today, the teacher said that he would take us to visit the water plant in the afternoon. The students were very happy and spent the whole morning with excitement and nervousness. In the afternoon, we were finally going to set off. The teacher asked us to line up and gather in the front playground. After the six third-grade classes arrived, they followed the teacher and set off towards their destination.
On the way, the students talked excitedly. Along the way, the scenery was beautiful. There were camphor trees like soldiers standing guard, cypress trees like balls, and evergreen trees that were evergreen all year round. Before we knew it, we came to the water plant.
When I walked into the gate, I found that everything in the factory was clean and tidy, with landscape trees planted next to it. We lined up to visit one after another. The first area was the Purification Pool, where there are pools with many names. The water is filtered and purified layer by layer here, making it cleaner. The water flows into the second area, which is used to disinfect and purify the water. The bacteria in the water are killed. This is the disinfection area. The water flows to the last step - the pressurization zone. After the water passes through here, the water pressure increases, and people living in high-rise buildings can drink clean tap water. Finally, we visited the database, which introduced the year in which the water plant was established, as well as some brief introductions to the water plant.
After participating, we went back to school with the teacher.
Through the visit, I understood that the tap water I usually use comes from such a complicated process, and I understood that we need to save water more.
【Part 2】
Today is an ordinary Thursday, but it is a special day for the third graders, because this afternoon all our third graders are going to visit the water plant!
We looked forward to the stars and the moon, and finally the afternoon came. As soon as the announcement rang, the students ran to the front playground and waited to assemble. At this time, Director Yang began to speak: "Students and teachers, please keep to the right when walking on the road, and the team must be neat..." So we lined up neatly like a long queue and walked to the water plant. On the way, whenever someone got tired, Director Yang would shout: "Stop and take a rest!" As we walked, we came to the water plant.
Director Yang shouted "stop" and then said: "We will visit each class one by one in the order of each class later. The teachers will explain to you water pumping, filtration, sedimentation, disinfection and water delivery. We will start from class one now." We waited for a while and started to visit. We followed the stairs to the upper floor, which is a place for filtration and purification, consisting of many pools. The pool is very deep, it is said that it is six meters deep, so we are very careful. Water flows from one pool to another, first coagulating, then settling, and finally filtering, gradually becoming cleaner. Then we followed the teacher to the disinfection area, and the English teacher explained it to us. The English teacher said: "Have you seen the machine behind me? Our tap water is disinfected by it." Everyone nodded in understanding and went to the pump room that delivers water. We saw a lot of machines and pipes, and the machines made a loud roar. The teacher said: “We use drinks at homeWater is transported through these pipes. Everyone exclaimed: "It turns out these tubes helped!" "Then we returned to the starting point.
After all six classes had finished visiting, Director Yang said: "Now we have to go back and see our uncles and aunts again! "We then lined up and returned to the classroom.
Although we walked a lot today, we learned a lot. I think we must save water and protect our earth in the future.
【Part 3】
This year, one of our moral education activities in third grade is to visit the water plant. This is something I have been looking forward to doing since I was in first grade. No, we are going to visit this afternoon. We are all very happy.
In the afternoon, the teacher organized our team and went downstairs. When I got downstairs, I grabbed other people's clothes and jumped around excitedly. After leaving the school gate, I looked forward and then back, and found that our team was like a giant dragon walking through the earth. It was really spectacular.
Go, go, go! After walking for a long time, we finally arrived at our destination. As soon as I entered the door, I saw the words on the wall: "To provide clean water for 50,000 people, we have a great responsibility. "These eighteen characters. We first came to the place where tap water is transported. I looked at the clear water under my feet and listened to their explanation. Then, we came to two machines like washing machines. Our foreign language teacher said that chlorine gas that was not completely discharged after disinfection was collected in them. , when I heard this, I thought, no wonder the water in our house is so pure! It turned out to be the function of a professional detoxifier! We finally came to a house like a large garage, where the sound of machines was running, and the water for thousands of our households was transported from here.
After the visit, although I was very tired on the way home, I still whispered: "It was interesting to go to the water plant, and we learned a lot of knowledge. ”
【Part 4】
The sky is grey-blue, and the clouds are stacked together, which makes it feel a bit depressing, but there are still wisps of warm light struggling to penetrate the thick clouds, just like our mood, they are all "thousands of rays of light".
We walked a long way, but we chatted enthusiastically all the way and didn't feel the distance and length of the journey.
While joking, we arrived at the water plant. I saw the four Chinese characters "Shixiong Water Plant" written in golden cursive on the snow-white wall.
The factory director used a microphone to introduce us to the tap water production process: “We must first do these three things to produce tap water: river water extraction, purification and pressurization. We will go to the treatment tank later and treat the impurities in the water according to these three points. ”
As we walked up the gravel-paved ramp, the gravel under our feet made a clattering sound, as if we were singing. The tall trees stretched out on the grassy slope, and the branches were full of pink and red flowers - everything around was green, and the beautiful scenery of the water plant took our breath away.
At this time, the factory director and Teacher Qiu came over to take us to visit the treatment tank. There are also three stages in treating water impurities: reaction stage, precipitation stage and transition stage. There are five or six small pools in total, but they are about six meters deep. There is a separated water flow between the pools. The treated water flows in and is sent to thousands of households. The water flowing out of the small holes is a column of water, but it flows so fast that it looks like a stationary icicle to me. The water in the pool is green, but in the partition channel it becomes transparent, stirring up waves.A small splash.
This visit to the water plant not only gained me knowledge about how to produce tap water, but also made me understand the importance of saving water.
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published on 2023-02-08
