M440305 五、新型說明： 【新型所屬之技術領域】 本新型是有關於一種淨化系統，且特別是有關於一種 水質淨化系統。 【先前技術】 在水產養殖中，常見的有毒物質，依其毒性由高至低 依次為硫化氫、氨氮、亞硝酸鹽，其中亞硝酸鹽的毒性遠 *較氨氮為弱。而一般養殖水環境中，硫化氫濃度常遠低於 氨氮，且易化學變化為無毒產物，所以在水產養殖較不為 毒性的來源，因此氨氮是最具威脅性的。 一般而言，水中氨氮的濃度1〜2mg/L時，即有可能對 水產養殖標的（如魚類或蝦類）產生毒性。也因此，目前已 有諸多技術皆採增加水中溶氧方式，以藉由硝化作用將氨 氮轉化為較不具毒性之硝酸鹽氣。 然而，高濃度之硝酸鹽氮於室外養殖場，卻有助於藻 I類之大量增生。而過量之藻類常會導致水質惡化，甚至是 水產養殖標的的死亡。為減少損失，養殖業者不得不使用 藥劑來控制水質。此舉雖可提升產量，但也降低水產養歹直 標的品質與市場價格。 【新型内容】 因此，本新型之一態樣就是在提供一種水質淨化系 統，其主要是藉由潛流式水生植物淨化槽來提供一個適合 4 M440305 脫硝菌進行脫硝作用的環境，從而減少待處理水中的硝酸 鹽氮，進而抑制藻類增生。並且，藉由脫氧槽來降低待處 理水中的溶氧量，以強化潛流式水生植物淨化槽中所進行 的脫硝作用。如此一來，此水質淨化系統可在不使用化學 藥劑的前提下，降低待處理水中之藻類濃度。 根據本新型之上述目的，提出一種水質淨化系統。此 水質淨化系統，適用以淨化一待處理水。且此水質淨化系 統主要包含脫氡槽以及潛流式水生植物淨化槽。其中，脫 鲁氧槽内部設有至少一多孔濾料，且脫氧槽頂部覆設一蓋 板。潛流式水生植物淨化槽，適用以透過第一連結水管接 收來自脫氧槽之待處理水，其中潛流式水生植物淨化槽内 部設有多孔濾材層以及至少一第一水生植物。 根據本新型之一實施例，上述之多孔濾料包含接觸濾 繩、流動式生物接觸濾、材、蜂巢式斜坡浪交叉型接觸濾、材 或浮動生物濾料。 根據本新型之另一實施例，上述之多孔濾材層包含礫 籲石、廢輪胎切片、爐潰、飛灰、河沙、無煙煤、活性礙、 廢棄混凝土塊、大理石或廢磚塊。 根據本新型之又一實施例，上述之至少一第一水生植 物包含至少一挺水性水生植物。 根據本新型之再一實施例，上述之蓋板包含一第一隔 熱板。 根據本新型之再一實施例，上述之脫氧槽包含一浮 板，且浮板吊掛至少一多孔濾料。 根據本新型之再一實施例，上述之脫氧槽包含一第一 5 M440305 . _匕言’且第一排泥管的入口端位於脫氧槽的底部，第— - 排’尼管的出口端位於脫氧槽之外。 - 根據本新型之再一實施例，上述之第一連結水管設有 一第一閥門。 ,根據本新型之再一實施例，上述之脫氧槽的槽底呈倒 梯型。 _ • 人一根據本新型之再一實施例，上述之水質淨化系統更包 含自由表面流動式水生植物淨化槽，適用以透過一第二 =結水了將待處理水自自由表面流動式水生植物淨化槽傳 j至脫氧槽。其中’自由表面流動式水生植物淨化槽;部 口又有一土壤層以及至少一第二水生植物。 根據本新型之再一實施例，上述之至少一第二水生植 =Ο 3至少—挺水性水生植物及/或至少一浮水性水生植 根據本新型之再一實施例，上述之第二連結水管之d 口端高於第一連結水管的入口端。 ^根據本新型之再—實施例，上述之第二連結水管設$ 一第二閥門。 * 入一=柄型之再—實施例，上述之水質淨化系統更爸 各月’“軋槽以及—第一空氣壓縮幫浦。其中，前曝氣中 過—第三連結水管將待處理水自前曝氣槽傳送j 動ί水生植物淨化槽。此外，前曝氣槽内部言 有n缝1 —空氣壓縮幫浦與第—散氣盤連通。 設一=新型之再_實施例’上述之前曝氣槽的頂㈣ M440305 隔熱Γ本新型之再一實施例，上述之遮光板包含一第二 二排ίΐ本新f之再—實施例，上述之前曝氣槽包含一第 第一：二且弟-排泥管的入口端位於前曝氣槽的底部， 弟一排泥官的出口端則位於前曝氣槽之外。 山根據本新型之再—實補，上述之第三連結水管之出 口鈿低於第二連結水管的入口端。 =本新型之再—實施例’上述之第三連結水管設有 一弟二閥門。 舰^據本新型之再—實施例，上述之前曝氣槽的槽底呈 倒梯型。 人一，據本新型之再—實施例，上述之水質淨化系統更包 s-沉水馬相及_賴水f。此較水管連通沉水馬達 之出水端與前曝氣槽。 八根據本新型之再一實施例，上述之水質淨化系統更包 3一後曝氣mu氣壓㈣浦。其巾，後曝氣槽 適用以透過—第四連結水管接收來自潛流式水生植物淨^ ，之待處理水。後曝氣槽内部設有一第二散氣盤。第二空 礼壓縮幫浦與第二散氣盤連通。待處理水經後曝氣槽處理 後形成一經過處理之水。 根據本新型之再一實施例，上述之第一連結水管之出 口端低於第四連結水管的入口端。 根據本新型之再一實施例，上述之後曝氣槽包含一第 二排泥官，且第三排泥管的入口端位於後曝氣槽的底部， 第三排泥管的出口端則位於後曝氣槽之外。 7 M440305 根據本新型之再一實施例，上述之第四連結水管設有 一第四閥門。 根據本新型之再一實施例，上述之後曝氣槽的槽底呈 倒梯型。 根據本新型之再一實施例，上述之水質淨化系統更包 含一水位控制槽，適用以透過一通孔接收來自後曝氣槽之 經過處理之水，其中通孔的位置低於第四水管之出口端， 且水位控制槽之出口高於通孔。 • 根據本新型之上述目的，另提出一種水質淨化系統。 此水質淨化系統包含一脫氧槽、一潛流式水生植物淨化 槽、一自由表面流動式水生植物淨化槽、一前曝氣槽、一 第一空氣壓縮幫浦、一後曝氣槽以及一第二空氣壓縮幫 浦。其中，脫氡槽内部設有至少一多孔濾料，且脫氧槽頂 部覆設一蓋板。潛流式水生植物淨化槽適用以透過一第一 連結水管接收來自脫氧槽之待處理水。其中，潛流式水生 植物淨化槽内部設有一多孔渡材層以及至少一第一水生植 |物。自由表面流動式水生植物淨化槽適用以透過一第二連 結水管將待處理水自自由表面流動式水生植物淨化槽傳送 至脫氧槽。其_，自由表面流動式水生植物淨化槽内部設 有一土壤層以及至少一第二水生植物。前曝氣槽適用以透 過一第三連結水管將待處理水自前曝氣槽傳送至自由表面 流動式水生植物淨化槽。其中，前曝氣槽内部設有一第一 散氣盤。第一空氣壓縮幫浦與第一散氣盤連通。後曝氣槽 適用以透過一第四連結水管接收來自潛流式水生植物淨化 槽之待處理水。其中，後曝氣槽設有一第二散氣盤。第二 8 M440305 空氣壓縮幫浦與第二散氣盤連通。 【實施方式】 請參照第1圖，其係％示依照本新型之一實施方式的 一種水質淨化系統之系統架構示意圖。此水質淨化系統100 可應用於水產養殖、工業廢水處理或家庭廢水處理。如第 1圖所示，在一實施例中，水質淨化系統100主要包含脫 氧槽110以及潛流式水生植物淨化槽120。其中，潛流式 •水生植物淨化槽120是透過連結水管130與脫氧槽110連 通’而可接收來自脫氧槽110之待處理水。若此水質淨化 系統100是用在水產養殖，則此待處理水即為養殖池中的 水。 潛流式水生植物淨化槽12〇内部設有多孔濾材層122 以及至少一第一水生植物124。雖於第1圖中，此多孔漁 材層122是包含平均粒徑1.0〜10.0 cm、孔隙率0.35〜〇.6〇 之碟石。但實際上’此多孔濾材層122亦可包含廢輪胎切 鲁片、爐渣、飛灰、河沙、無煙煤、活性碳、廢棄混凝土塊、 大理石或廢磚塊。此些多孔濾材層122可供第一水生植物 124植生。第一水生植物124則可以挺水性水生植物為主， 例如蘆葦、香蒲、燈心草或錢幣草等。此些第一水生植物 124除可藉由攝取作用去除待處理水中之營養鹽或重金屬 外’退可遮蔽陽光，以利於創造一個適合脫硝菌進行脫 作用之環境。 @ 此外’此些第一水生植物124的根、莖或落葉還可在 多孔濾材層122中形成腐植層（圖未繪示）。而腐植層可產 9 M440305 生離子交換或氡化還原，以除去亞硝酸鹽氮、硝酸鹽氮、 碟酸鹽等營養鹽。而且，多孔濾材層122中之腐植層，還 可創造出厭氧的環境，從而可利於脫硝菌進行脫硝作用， 進而減少待處理水中之硝酸鹽氮。 脫氡槽110内部則設有至少一個多孔濾料112。在一些 實施例中’此些多孔濾料112可為總體表面積為280 m2/m3 且空隙率大於99%之接觸濾繩、總體表面積為800 m2/m3 之流動式生物接觸濾材、空隙率98.7%之蜂巢式斜坡浪交 ►叉型接觸濾材或是空隙率91〜97%之浮動生物濾料。因為多 孔濾料112具有較大的總體表面積以及較高的空隙率，所 以很適合提供給待處理水中之微生物附生。如此一來，即 可増加待處理水中之微生物的數量，以利於藉由微生物來 消耗待處理水#的溶氧。因此，流經此脫氧槽110的待處 理水，其溶氧量將可減少。藉此，可強化在潛流式水生植 =化槽12G中所進行的生化作用。前述之生化作用主要 f指脫硝作用’惟亦有其他微生物之新陳代謝。某些微生 物之新陳代謝過程亦可去除污染物。 的內：1第@所示，在-實施例中，此脫氧槽110 此浮板？二：有汗板114。因待處理水進入脫氧槽110後’ 此/手板114會浮_為士品 掛此些多孔二2 #二 此浮板114除可用來吊 中的，亦可阻隔水面上之空氣，而讓空 、米又易於溶入水中。雖然，此歧多孔、清料112 + 可藉由固定支牟彳闰土也-、+ 此一夕孔應枓112也 m U5- Λ- X 、回未、、日不）來吊掛’但若以固定支牟來吊 掛’將無法達到阻隔空氣之功效。 ^支架來吊 此外，如第1圖所示，在—訾 隹貫鈿例中，此脫氧槽110 M440305 的頂部還可選擇性地覆設蓋板116。藉此蓋板116之阻隔， 可讓空氣難以進入脫氧槽110内，同時也可使空氣中的氧 不易溶入水中。在一實施例中，此蓋板116可例如為一整 塊的隔熱板或是僅有部分為隔熱結構。如此一來，此包含 有隔熱結構之蓋板116除了可阻隔空氣外，亦可阻隔陽 光。因此，若水質淨化系統100設置於戶外時，將可藉此 包含有隔熱結構之蓋板116來阻隔陽光的曝曬，使脫氧槽 110内之水溫不至於過高。除此之外，此包含隔熱結構之 φ蓋板116亦可使藻類難以進行光合作用，從而可抑制藻類 生長。 簡單來說，此潛流式水生植物淨化槽120可創造一個 適合進行脫硝、離子交換或氧化還原作用的環境，藉以減 少亞硝酸鹽氮、硝酸鹽氮、磷酸鹽等營養鹽。又，水中之 亞硝酸鹽氮、硝酸鹽氮、磷酸鹽等營養鹽過多，是水中藻 類過多的重要原因。故，藉由在潛流式水生植物淨化槽120 中所進行之脫硝、離子交換或氧化還原，可減少待處理水 φ中之藻類。而脫氧槽110則可降低待處理水中之溶氧量， 以強化在潛流式水生植物淨化槽120中所進行之生化作用 (主要為脫硝作用）。 請再次參照第1圖，在另一實施例中，根據應用需求， 水質淨化系統100更可包含自由表面流動式水生植物淨化 槽140。此自由表面流動式水生植物淨化槽140是透過連 結水管150與脫氧槽連通，而將待處理水從自由表面流動 式水生植物淨化槽140傳送到脫氧槽110。此自由表面流 動式水生植物淨化槽140内部可設有土壤層142以及至少 M440305 一第二水生植物144。 土壤層142可供此些第二水生植物144植生。由於土 壌層142屬於高表面積之固定物，再加上硝化菌於繁衍過 程中’有附著於固定物外表之傾向。因此，此土壤層142 亦可利於硝化菌附著，從而可有效提升硝化菌之増殖。由 於硝化菌在進行硝化作用時，可將待處理水中之氨氮去 除。故，在自由表面流動式水生植物淨化槽140中設有土 壤層142 ’主要是可提供一個適合硝化菌增殖的環境，以 鲁利於藉由硝化作用減少氨氮。前述之硝化菌主要是包含亞 硝酸菌（Nitrosomonas)及硝酸菌（Nitrobacter)等微生物。 第二水生植物144之攝取作用可減少待處理水中之營 養鹽以及重金屬。在一些實施例中，此些第二水生植物！ 44 可包含至少一挺水性水生植物及/或至少一浮水性水生植 物。其中’此些挺水性水生植物可例如為蘆葦、燈心草、 香蒲、狼尾草、風車草或培地茅等。此些挺水性水生植物 主要是可將微量氧氣傳輸於自由表面流動式水生植物淨化 鲁槽140底部之土壤層142中，而可局部強化硝化作用，惟 此土壤層142其餘的區域仍然呈厭、氣狀態，而是有利於脫 硝作用。至於浮水性水生植物則可例如為布袋蓮、水笑蓉 或浮萍等。而此些浮水性水生植物主要是對陽光有較佳之 遮蔽效果，因而對於藻類之抑制與硝化作用效率之提升皆 有較佳的效果。 此外，第二水生植物144之底部的根莖或土壤，還可 藉由有機物之礦化、硝化及脫确、同化等作用來減少待處 理水中之有機物或含氮污染物，且亦可減少水中微生物。 M440305 其中’減少有機物或含氮污染物之功效，主要是藉由附生 於此些第二水生植物144之根莖或土壤的微生物來達成。 雖然，呈現懸浮態之微生物亦可達此功效，惟懸浮態之微 生物的貢獻相對較低。至於減少微生物之功效，則是藉由 第二水生植物144之根系的沉澱、吸附等作用來達成。 除此之外’自由表面流動式生植物淨化槽140還可藉 由物理沉降、吸附或過濾等機制，來減少待處理水中之懸 浮固體物、營養鹽以及微生物。再者，在此自由表面流動 馨式生植物淨化槽140中’還可藉由曰照輻射光線及原生動 物之掠食作用滅少病原菌。 請再次參照第1圖，在又一實施例中，水質淨化系統 100更可根據實際需求而選擇性地包含前曝氣槽160以及 空氣壓縮幫浦162。其中，前曝氣槽160是透過連結水管 170與自由表面流動式水生植物淨化槽140連通，而將待 處理水自前曝氣槽160傳送至自由表面流動式水生植物淨 化槽140。此前曝氣槽160之内部可設有與空氣壓縮幫浦 鲁162連通之散氣盤164。如此即可藉此空氣壓縮幫浦162提 供空氣給散氣盤164 ’並可藉此散氣盤164製造微小的氣 泡，以增加空氣和待處理水的接觸面積，從而增加待處理 水之溶氧量。如此一來，可提升自由表面流動式水生植物 淨化槽140中所進行之硝化作用，從而增進硝化作用，進 而提升減少氦IU農度之功效。此外’亦可藉由氣體浮除作 用，來強化在自由表面流動式水生植物淨化槽140中進行 去除懸浮固體之效能。 值得一提的是’ Ulken曾於1963年指出，於溫度25 M440305 C時’黑暗中之亞硝酸菌攝氧率為光強4〇〇〇Lux時之丨22 倍，硝酸菌則為1 ·5倍。此外，H〇〇per & Terry於1973時 亦認為硝化作用於黑暗中之反應速率為高，當光強大於 200waU(420Lux)時，硝酸菌之活性明顯受到抑制。因此， 為了 &升硝化作用，如第1圖所示，在一實施例中，更可 在前曝氣槽160的頂部覆設可用來遮蔽陽光之遮光板 166。在一貫施例中，此遮光板166可例如為一整塊的隔熱 板或疋僅有部分為隔熱結構。如此一來，包含有隔熱結構 馨之遮光板166還可使前曝槽160中的待處理水之水溫不會 過南。另一方面’在本實施方式中所提到之脫硝菌或硝化 菌皆是在待處理水中自然存在者，而不需另外加入。 除此之外，在一實施例中，前曝氣槽16〇更可包含進 流水管167與沉水馬達168。透過進流水管167與沉水馬 達168之出水端連通，可將待處理水抽到前曝氣槽16〇。 請再次參照第1圖’於再一實施例中，水質淨化系統 1〇〇更可選擇性地包含後曝氣槽180以及空氣壓縮幫浦 籲182 °其中，後曝氣槽180是透過連結水管ι84與潛流式水 生植物淨化槽120連通，以接收來自於潛流式水生植物淨 化槽120的待處理水。後曝氣槽18〇内部設有與空氣壓縮 幫浦182連通之散氣盤186。如此一來，即可藉由空氣壓 縮幫浦182提供空氣給此散氣盤186，藉以提升待處理水 中的溶氧量。因此’若此水質淨化系統1〇〇是應用於水產 養殖業時，即可用以調整養殖池中之溶氧量，以符合水產 養殖之需。待處理水經後曝氣槽18〇處理後，則成為經過 處理後之水。 14M440305 V. New description: [New technical field] The present invention relates to a purification system, and in particular to a water purification system. [Prior Art] In aquaculture, the common toxic substances are hydrogen sulfide, ammonia nitrogen and nitrite in descending order of toxicity. The toxicity of nitrite is far weaker than that of ammonia nitrogen. In the general aquaculture water environment, the concentration of hydrogen sulfide is often much lower than that of ammonia nitrogen, and it is easy to change chemically into non-toxic products. Therefore, it is less a source of toxicity in aquaculture, so ammonia nitrogen is the most threatening. In general, when the concentration of ammonia nitrogen in water is 1~2mg/L, it is likely to be toxic to aquaculture targets (such as fish or shrimp). As a result, many technologies have been developed to increase the dissolved oxygen in water to convert ammonia nitrogen into less toxic nitrate gas by nitrification. However, high concentrations of nitrate nitrogen in outdoor farms contribute to the proliferation of algae I. Excess algae often leads to deterioration of water quality and even death from aquaculture targets. To reduce losses, breeders have to use potions to control water quality. Although this will increase production, it will also reduce the quality and market price of aquatic products. [New content] Therefore, one aspect of the present invention is to provide a water purification system, which mainly provides an environment suitable for denitrification of 4 M440305 denitrifying bacteria by a submerged aquatic plant purification tank, thereby reducing Treatment of nitrate nitrogen in water, thereby inhibiting algae proliferation. Further, the amount of dissolved oxygen in the water to be treated is lowered by the deoxidizing tank to enhance the denitration performed in the submerged aquatic plant purification tank. In this way, the water purification system can reduce the concentration of algae in the water to be treated without using chemicals. According to the above object of the present invention, a water purification system is proposed. This water purification system is suitable for purifying a treated water. The water purification system mainly includes a de-slipping tank and a submerged aquatic plant purification tank. Wherein, at least one porous filter material is disposed inside the desulfurization tank, and a cover plate is disposed on the top of the deoxidation tank. The submerged aquatic plant purification tank is adapted to receive the water to be treated from the deoxidation tank through the first connecting water pipe, wherein the submerged aquatic plant purification tank is provided with a porous filter layer and at least a first aquatic plant. According to an embodiment of the present invention, the porous filter material comprises a contact filter, a flow biocontact filter, a material, a honeycomb type cross-wave contact filter, a material or a floating biological filter. According to another embodiment of the present invention, the porous filter layer comprises gravel, waste tire slicing, furnace collapse, fly ash, river sand, anthracite, active barrier, waste concrete block, marble or waste brick. According to still another embodiment of the present invention, the at least one first aquatic plant comprises at least one aqueous aquatic plant. According to still another embodiment of the present invention, the cover plate includes a first heat shield. According to still another embodiment of the present invention, the deoxidizing tank comprises a floating plate, and the floating plate suspends at least one porous filter. According to still another embodiment of the present invention, the deoxidizing tank comprises a first 5 M440305. _ ' ' and the inlet end of the first drain pipe is located at the bottom of the deoxidation tank, and the outlet end of the first row of the tube is located Outside the deoxygenation tank. - According to still another embodiment of the present invention, the first connecting water pipe is provided with a first valve. According to still another embodiment of the present invention, the groove bottom of the deoxidizing tank is of an inverted ladder type. According to still another embodiment of the present invention, the above water purification system further comprises a free surface flow type aquatic plant purification tank, which is adapted to pass the water to be treated from the free surface flow type aquatic plant through a second = watering The purification tank passes j to the deoxidation tank. Among them, the 'free surface flow type aquatic plant purification tank; the mouth has a soil layer and at least one second aquatic plant. According to still another embodiment of the present invention, the at least one second aquatic plant is at least one of the water-borne aquatic plants and/or the at least one floating water plant. According to still another embodiment of the present invention, the second connecting water pipe is The mouth of the d is higher than the inlet end of the first connecting water pipe. According to a further embodiment of the present invention, the second connecting water pipe is provided with a second valve. * Into the = handle type - the embodiment, the above-mentioned water purification system is more dad every month '" rolling groove and - the first air compression pump. Among them, the first aeration in the third aeration pipe will be treated water The front aeration tank conveys the j-uy water plant purification tank. In addition, the front aeration tank has n slits 1 - the air compression pump is connected with the first-distribution disk. Set one = new type _ embodiment 'before The top of the aeration tank (4) M440305 Insulation 再 In another embodiment of the present invention, the visor includes a second and a second row, and the foregoing aeration tank comprises a first: two And the inlet end of the diver-drain pipe is located at the bottom of the front aeration tank, and the outlet end of the mud row of the younger brother is located outside the front aeration tank. According to the re-creation of the new type, the third joint water pipe mentioned above The outlet 钿 is lower than the inlet end of the second connecting water pipe. = The second embodiment of the present invention is provided with a second valve. The ship is according to the re-embodiment of the present invention. The bottom of the trough is inverted ladder type. One, according to the re-embodiment of the present invention, The water purification system described further includes s-submersible horse phase and _ Lai Shui f. This water pipe is connected to the water outlet end of the submersible motor and the front aeration tank. According to still another embodiment of the present invention, the above water purification system In addition, after the first one, the aeration mu pressure (four) Pu. The towel, the rear aeration tank is suitable for receiving the water to be treated from the submerged aquatic plant through the fourth connecting water pipe. The second aeration tank has a second inside. The second airbag compression pump is connected to the second air diffusing disc. The water to be treated is treated by the post-aeration tank to form a treated water. According to still another embodiment of the present invention, the first link is The outlet end of the water pipe is lower than the inlet end of the fourth connecting water pipe. According to still another embodiment of the present invention, the rear aeration tank includes a second mud discharge officer, and the inlet end of the third sludge pipe is located at the rear aeration tank. At the bottom of the bottom, the outlet end of the third row of mud pipes is located outside the rear aeration tank. 7 M440305 According to still another embodiment of the present invention, the fourth connecting water pipe is provided with a fourth valve. According to still another embodiment of the present invention For example, after the above, the bottom of the aeration tank is inverted. According to still another embodiment of the present invention, the water purification system further includes a water level control slot adapted to receive the treated water from the rear aeration tank through a through hole, wherein the through hole is positioned lower than the fourth water pipe. At the outlet end, and the outlet of the water level control tank is higher than the through hole. • According to the above object of the present invention, a water purification system is proposed. The water purification system comprises a deoxidation tank, a submerged aquatic plant purification tank, and a free surface. a flow type aquatic plant purification tank, a front aeration tank, a first air compression pump, a rear aeration tank, and a second air compression pump, wherein at least one porous filter material is disposed inside the untwisting tank, The top of the deoxidizing tank is covered with a cover plate. The submerged flow aquatic plant purification tank is adapted to receive the water to be treated from the deoxidizing tank through a first connecting water pipe, wherein the submerged aquatic plant purification tank is provided with a porous ferrite layer and at least A first aquatic plant | The free surface flow type aquatic plant purification tank is adapted to transfer the water to be treated from the free surface flow type aquatic plant purification tank to the deoxidation tank through a second connecting water pipe. The free surface flow type aquatic plant purification tank is internally provided with a soil layer and at least a second aquatic plant. The front aeration tank is adapted to transfer the water to be treated from the front aeration tank to the free surface flow type aquatic plant purification tank through a third connecting water pipe. Wherein, a first air diffusing disc is arranged inside the front aeration tank. The first air compression pump is in communication with the first air diffuser. The rear aeration tank is adapted to receive the water to be treated from the submerged flow aquatic plant purification tank through a fourth connecting water pipe. Wherein, the rear aeration tank is provided with a second air diffusing disc. The second 8 M440305 air compression pump is in communication with the second diffuser. [Embodiment] Please refer to Fig. 1, which is a schematic diagram showing the system architecture of a water purification system according to an embodiment of the present invention. This water purification system 100 can be applied to aquaculture, industrial wastewater treatment or domestic wastewater treatment. As shown in Fig. 1, in one embodiment, the water purification system 100 mainly includes a deoxidizing tank 110 and a submerged aquatic plant purification tank 120. Among them, the submerged flow type aquatic plant purification tank 120 is connected to the deoxidation tank 110 through the connection water pipe 130 to receive the water to be treated from the deoxidation tank 110. If the water purification system 100 is used in aquaculture, the water to be treated is the water in the culture pond. The submerged aquatic plant purification tank 12 is internally provided with a porous filter layer 122 and at least a first aquatic plant 124. In Fig. 1, the porous fishery layer 122 is a disc containing an average particle diameter of 1.0 to 10.0 cm and a porosity of 0.35 to 〇.6. In practice, however, the porous filter layer 122 may also comprise waste tire cut sheets, slag, fly ash, river sand, anthracite, activated carbon, waste concrete blocks, marble or waste bricks. These porous filter layers 122 are available for first aquatic plants 124 to grow. The first aquatic plant 124 can be dominated by aqueous aquatic plants such as reed, cattail, rush or coin grass. The first aquatic plants 124 can remove sunlight from the nutrients or heavy metals in the water to be treated by ingestion, so as to create an environment suitable for denitrifying bacteria to be deactivated. @ Further, the roots, stems or leaves of the first aquatic plants 124 may also form a humic layer (not shown) in the porous filter layer 122. The humus layer can produce 9 M440305 raw ion exchange or deuteration reduction to remove nutrients such as nitrite nitrogen, nitrate nitrogen and disc acid salt. Moreover, the humus layer in the porous filter layer 122 can also create an anaerobic environment, which facilitates the denitrification of the denitrifying bacteria and thereby reduces the nitrate nitrogen in the water to be treated. At least one porous filter material 112 is disposed inside the untwisting tank 110. In some embodiments, the porous filter material 112 can be a contact filter with a total surface area of 280 m2/m3 and a void ratio greater than 99%, a flowable biological contact filter having a total surface area of 800 m2/m3, and a void ratio of 98.7%. Honeycomb type slope wave crossing ► fork contact filter or floating biological filter with a void ratio of 91~97%. Because the porous filter material 112 has a large overall surface area and a high void fraction, it is well suited for providing microbial epidemics to the water to be treated. In this way, the amount of microorganisms in the water to be treated can be increased to facilitate the consumption of dissolved oxygen of the water to be treated # by the microorganisms. Therefore, the amount of dissolved oxygen in the water to be treated flowing through the deoxidizing tank 110 can be reduced. Thereby, the biochemical action carried out in the submerged aquatic planting zone 12G can be enhanced. The aforementioned biochemical action mainly refers to denitrification, but there are also other microorganisms' metabolism. The metabolism of certain microorganisms also removes contaminants. Inside: 1 @, in the embodiment, this deoxidation tank 110 this floating plate? Two: There is a sweat board 114. After the water to be treated enters the deoxidizing tank 110, this / hand plate 114 will float. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Rice is easily dissolved in water. Although, the porous, clear material 112 + can be hanged by fixing the support soil -, + this time hole 枓 112 also m U5- Λ-X, back not, day, not) Fixing the support to hang "will not achieve the effect of blocking air. ^ Bracket hoisting In addition, as shown in Fig. 1, in the 钿 隹 example, the top of the deoxidizing tank 110 M440305 can also selectively cover the cover plate 116. Thereby, the barrier of the cover plate 116 makes it difficult for air to enter the deoxidizing tank 110, and at the same time, the oxygen in the air is not easily dissolved into the water. In one embodiment, the cover plate 116 can be, for example, a one-piece insulation panel or only partially insulated. In this way, the cover plate 116 including the heat insulating structure can block the sunlight in addition to blocking the air. Therefore, if the water purification system 100 is installed outdoors, the cover plate 116 including the heat insulating structure can be used to block the exposure of the sunlight, so that the temperature of the water in the deoxidation tank 110 is not too high. In addition to this, the φ cover plate 116 including the heat insulating structure can also make it difficult for the algae to perform photosynthesis, thereby suppressing the growth of algae. Briefly, this submerged aquatic plant purification tank 120 creates an environment suitable for denitrification, ion exchange or redox, thereby reducing nutrient salts such as nitrite nitrogen, nitrate nitrogen, and phosphate. In addition, too much nutrients such as nitrite nitrogen, nitrate nitrogen, and phosphate in water are important causes of excessive algae in the water. Therefore, the algae in the water to be treated φ can be reduced by denitration, ion exchange or redox in the submerged aquatic plant purification tank 120. The deoxidation tank 110 reduces the amount of dissolved oxygen in the water to be treated to enhance the biochemical action (mainly denitration) carried out in the submerged aquatic plant purification tank 120. Referring again to Figure 1, in another embodiment, the water purification system 100 may further include a free surface flow aquatic plant purification tank 140, depending on the application requirements. The free surface flow type aquatic plant purification tank 140 is connected to the deoxidation tank through the connection water pipe 150, and the water to be treated is transferred from the free surface flow type aquatic plant purification tank 140 to the deoxidation tank 110. The free surface flow aquatic plant purification tank 140 may be internally provided with a soil layer 142 and at least M440305 and a second aquatic plant 144. The soil layer 142 is available for cultivating the second aquatic plants 144. Since the soil layer 142 is a high surface area fixture, the nitrifying bacteria tend to adhere to the appearance of the fixture during the propagation process. Therefore, the soil layer 142 can also facilitate the attachment of nitrifying bacteria, thereby effectively enhancing the cultivation of nitrifying bacteria. Since the nitrifying bacteria are subjected to nitrification, the ammonia nitrogen in the water to be treated can be removed. Therefore, the soil layer 142' is provided in the free surface flow type aquatic plant purification tank 140 to provide an environment suitable for the proliferation of nitrifying bacteria, and to reduce ammonia nitrogen by nitrification. The aforementioned nitrifying bacteria mainly include microorganisms such as Nitrosomonas and Nitrobacter. The uptake of the second aquatic plant 144 reduces nutrient salts and heavy metals in the water to be treated. In some embodiments, such second aquatic plants! 44 may comprise at least one aqueous aquatic plant and/or at least one floating aquatic plant. Among them, such water-borne aquatic plants can be, for example, reed, rush, cattail, pennisetum, windmill grass or pelt. The water-borne aquatic plants mainly transmit a small amount of oxygen to the soil layer 142 at the bottom of the free surface flowing aquatic plant purification trough 140, and locally strengthen the nitrification, but the rest of the soil layer 142 is still annoying, The gas state is beneficial to denitrification. As for the floating aquatic plants, for example, Budailian, Shuixiaorong or duckweed can be used. These floating aquatic plants have a better shielding effect on sunlight, and thus have better effects on the inhibition of algae and the improvement of nitrification efficiency. In addition, the rhizome or soil at the bottom of the second aquatic plant 144 can also reduce the organic matter or nitrogenous pollutants in the water to be treated by mineralization, nitrification, de-confirmation and assimilation of the organic matter, and can also reduce microorganisms in the water. . M440305 wherein 'the effect of reducing organic matter or nitrogen-containing contaminants is mainly achieved by microorganisms attached to the rhizome or soil of these second aquatic plants 144. Although microbes in a suspended state can achieve this effect, the contribution of suspended microbes is relatively low. The reduction of the efficacy of the microorganism is achieved by the action of precipitation, adsorption, etc. of the root system of the second aquatic plant 144. In addition to this, the free surface flow type plant purification tank 140 can also reduce suspended solids, nutrients and microorganisms in the water to be treated by means of physical sedimentation, adsorption or filtration. Furthermore, in this free surface flow, the sapphire plant purification tank 140 can also destroy pathogenic bacteria by irradiating the radiation and the predation of the original living matter. Referring again to FIG. 1, in still another embodiment, the water purification system 100 can further include a front aeration tank 160 and an air compression pump 162 according to actual needs. The front aeration tank 160 is connected to the free surface flow type aquatic plant purification tank 140 through the joint water pipe 170, and the water to be treated is transferred from the front aeration tank 160 to the free surface flow type aquatic plant purification tank 140. The inside of the aeration tank 160 may be provided with a diffuser disk 164 communicating with the air compression pump 162. In this way, the air compression pump 162 can supply air to the air diffusion disk 164 ′ and the micro air bubbles can be formed by the air diffusion disk 164 to increase the contact area between the air and the water to be treated, thereby increasing the dissolved oxygen of the water to be treated. the amount. In this way, the nitrification carried out in the free surface flow type aquatic plant purification tank 140 can be enhanced, thereby enhancing nitrification and thereby improving the efficacy of reducing 氦 IU agronomy. In addition, the effectiveness of removing suspended solids in the free surface flowable aquatic plant purification tank 140 can be enhanced by gas floatation. It is worth mentioning that 'Ulken pointed out in 1963 that at the temperature of 25 M440305 C, the oxygen uptake rate of nitrite in the dark is 22 times that of 4〇〇〇 Lux, and that of nitrate is 1. 5 Times. In addition, H〇〇per & Terry also believed that the reaction rate of nitrification in the dark was high at 1973, and the activity of nitric acid was significantly inhibited when the light was stronger than 200 waU (420 Lux). Therefore, for & nitration, as shown in Fig. 1, in one embodiment, a visor 166 for shielding sunlight may be placed on top of the front aeration tank 160. In a consistent embodiment, the visor 166 can be, for example, a one-piece insulating panel or a portion that is only thermally insulated. In this way, the visor 166 including the insulating structure can also prevent the water temperature of the water to be treated in the front exposure tank 160 from going too far south. On the other hand, the denitrifying bacteria or the nitrifying bacteria mentioned in the present embodiment are naturally present in the water to be treated without additional addition. In addition, in an embodiment, the front aeration tank 16 may further include a water inlet pipe 167 and a submersible motor 168. The water to be treated is pumped to the front aeration tank 16 through the inlet pipe 167 and the outlet end of the submersible motor 168. Referring again to FIG. 1 , in still another embodiment, the water purification system 1 〇〇 optionally includes a rear aeration tank 180 and an air compression pump 182 ° therein, and the rear aeration tank 180 is through the connection water pipe. The ι 84 is in communication with the submerged aquatic plant purification tank 120 to receive the water to be treated from the submerged aquatic plant purification tank 120. A diffuser disk 186 communicating with the air compression pump 182 is disposed inside the rear aeration tank 18A. In this way, air is supplied to the diffuser disk 186 by the air compression pump 182, thereby increasing the amount of dissolved oxygen in the water to be treated. Therefore, if the water purification system is used in aquaculture, it can be used to adjust the dissolved oxygen in the pond to meet the needs of aquaculture. After the treated water is treated by the post-aeration tank 18, it becomes the treated water. 14