This creation water tank purification pollution discharge structure system can be improved water quality and be solved pond pollution problem with simple structure and operation readily design. Main structure includes two components, first is that pond ontology exempts from aerodynamic pressure difference blowdown design, in pond, body bottom portion makees the predetermined slope of a 10-15 degree, a dirt collection groove is arranged in lowest part on the predetermined slope, a strainer is covered on groove, the what groove is set with the connection of a connecting pipe one end, the other end extends to pool side, regulate and control to drain with an adjustable pipe, the pollutant of bottom of pond is discharged using water level pressure difference. Second component is that have precipitating, filtering, blowdown and the Full Featured Simple filter groove body of purification, merged according to practical present situation using single slot or multiple-grooved and is used, water is extracted into filtering groove body via pipeline using Water-pumping motor, the filtering bodies such as palm brush or gauze are placed in groove body, the flow velocity of water can be reduced and precipitate suspended contaminant, nitrogen cycle in water can be carried out by adhering to nitrifier in filtering body, and slot bottom has a dirt collection groove design, and when blowdown, sludge was discharged using the pressure that water-head generates. Filtering a large amount of water plants of groove body water surface planting has beautifying functions, while absorbing the nitrate removal water quality eutrophication in water.The sewage of pond ontology and filtering groove body discharge, the natural fertilising that all can be used as flowers or other crops use本創作水池淨化排汙結構係以構造簡單與操作容易的設計，可以改善水質與解決水池汙染問題。主要的結構包含兩個構件，一是水池本體免動力壓力差排汙設計，在水池本體底部作一10-15度的預定斜坡，在該預定斜坡的最低處設置一集汙凹槽，凹槽上覆蓋一濾網，以一連通管一端連接設於該凹槽，另一端延長至池邊，以一活動管調控排水，利用水位壓差將池底的汙染物排出。第二個構件是具備沉澱、過濾、排汙和淨化全功能的簡易過濾槽體，依實際現況採用單槽或多槽合併使用，利
