As we all know,the earth is a blue planet,and water accounts for most of the earth.But only fresh water can be used by people,animals and plants.That is to say,the amount of water that the earth can supply for life on land is less than 1% of its total water.Are you willing to waste the water that is as scarce as before? Lets see how Wanan group takes care of water resources!
With light steps and neat lines,we finally stepped into the gate of Wanan.We were very happy one by one.Walk into Wanan,a gust of wind blows,roadside,everywhere tall trees,green grass,fresh flowers.This beautiful scenery adds a life and interest to the factory which should have been dead.Along the way,with red flowers,green trees,green grass,and the clear and happy songs of birds,all fatigue was blown away by the wind.With the help of the staff,we arrived at Wanan sewage treatment station.There are two big pools here.One is the unpurified water.Its black.There are some unidentified garbage floating on it,and there is a stench.In the other pool,there is air floating water,which is earthy yellow.Compared with the black water in the other pool,there are unknown chemicals: ferrous sulfate,sodium pyrosulfite,etc.
In the staffs introduction,I found that the original sewage treatment is so cumbersome.After a process,first the air flotation tank,then the acidification tank,and finally to the reaction tank.Its not finished yet.Such water cant be discharged into the river directly.Only after strict inspection by the sewage treatment plant can it become enough water.In fact,the industrial and domestic wastewater treated by Wanan is only a small part.On the way from Wanan to school,I saw a dirty river.The river has turned grey.How clear it used to be! When I think of this place,I feel heartache.Its not enough to rely on sewage treatment plants alone.There are thousands of such rivers in the world.Only when we act early can we let mother earth shine again.
Green mountains and waters are the fairyland in everyones heart.How beautiful the earth mother used to be! Love water,protect water,cherish water,lets act together!
【愛護(hù)水資源 Take good care of water resources】相關(guān)文章：
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