Aquaculture wastewater, rich in organic matter, nitrogen and phosphorus, poses a significant environmental threat when ...

Prevent leaking dam or pond wall by using pvc pond liner to also stop ducks from eating into the side of the wall making holes so the water runs through... -~-~~-~~~-~~-~- Please watch: "5 Fruit Tree ...

Xie, corresponding author of the study. The efficient multi-stage treatment system integrates a sedimentation pond, a first filtration dam, an aeration pond, a second filtration dam, a biological ...