Landscape water usually named as water using for visual view, it is list into 2 kinds: , one is for the nature water scene, like the natural lake, rivers,etc.. the other is artificial waterscape, like  fountain ,lake, city river.etc..all of them is surface water, the self purification capacity is very low, and it is easy to be pullted. 

Landscape water management needs to adjust measures to local conditions,and local comprehensive management, the commonly methods include physical, biological and ecological law.. the landscap water have other ways of pollution factor.  

1.  the surface runoff of surface and  soil organic matter and nitrogen and phosphorus in the surface and the earth caused by the rainning. (the suface water pollution level is similar to the daily sewage water)

2. the outer organic matter and nitrogen and phosphorus from the atmospheric dust fall

3. organic matte that from the biocenose Continuous derivative death in lake

4. Blue-green algae outbreak caused by the high temperature in Summer

for the principle

1.Dissolved oxygen breathing ---Increase the water dissolved oxygen, fresh and activation

2.Hydraulic flotation--Remove the organic and inorganic substances in water

3.Heavy LiWei fine filtration pressure--Efficient intercept suspended solid particles

4Liquid chlorine pulse elimination---Kill residual bacteria in the water, improve the water immune ability