TWI298712B - Method and apparatus for treating organic wastewater capable of recovering phosphorus - Google Patents
Method and apparatus for treating organic wastewater capable of recovering phosphorus Download PDFInfo
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- TWI298712B TWI298712B TW92113672A TW92113672A TWI298712B TW I298712 B TWI298712 B TW I298712B TW 92113672 A TW92113672 A TW 92113672A TW 92113672 A TW92113672 A TW 92113672A TW I298712 B TWI298712 B TW I298712B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1221—Particular type of activated sludge processes comprising treatment of the recirculated sludge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Description
1298712 ___ 五、發明說明（1) 【發明所屬之技術領域】 本發明乃關於一種對污水或是有機性產業排水之有機 廢水進行生物處理的過程中，降低所產生的剩餘污泥的產 生量之技術。 【先前技術】 一般而言，污水或是有機性的產業排水以需氧性生物 處理法、硝化脫氮法、厭氧性生物處理法等種種的生物處 理法來處理。有機廢水的生物處理法雖然極為優良，但是 在處理過程中會產生大量污泥，全曰本的污泥的產生量每 年在1 0 0 0萬噸以上。一般而言，剩餘污泥在脫水後進行掩 埋處理或是焚化處理，但是此處理的成本逐年增加，而成 為排水處理的全體成本上升的原因之一。因此，近年來用 於降低剩餘污泥的產生量之技術受到矚目。例如有方法建 議，藉由超音波照射於剩餘污泥，破壞剩餘污泥中的微生 物的細胞膜，並使内容物轉變為液化有機物之後，將液化 有機物送回生物處理槽，以生物處理使液化有機物無機 化，藉此來減少剩餘污泥。 然而，本案發明人等針對上述依據超音波之剩餘污泥 的處理法進行實驗，發現了雖然伴隨污泥的液化而達到有 機物的無機化，但同時污泥中的磷因液化處理而成為可溶 性，而無法於生物處理槽中除去磷，因而成為含高濃度的 磷的處理水排放至系統外之明顯的問題點。 本發明乃為了解決上述問題點而創作之發明，本發明 的目的在於提供，不僅可以降低剩餘污泥的排出量，還可1298712 ___ V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a method for reducing the amount of excess sludge generated during biological treatment of sewage or organic wastewater discharged from an organic industry. technology. [Prior Art] In general, sewage or organic industrial drainage is treated by various biological treatment methods such as aerobic biological treatment, nitrification and denitrification, and anaerobic biological treatment. Although the biological treatment method of organic wastewater is extremely excellent, a large amount of sludge is generated during the treatment, and the amount of sludge generated by the whole sputum is more than 1,000,000 tons per year. In general, the excess sludge is subjected to burying or incineration after dehydration, but the cost of this treatment is increasing year by year, which is one of the reasons for the increase in the overall cost of the drainage treatment. Therefore, in recent years, techniques for reducing the amount of excess sludge produced have attracted attention. For example, there is a method suggesting that by irradiating the excess sludge by ultrasonic waves, destroying the cell membrane of the microorganisms in the excess sludge, and converting the contents into liquefied organic matter, the liquefied organic matter is returned to the biological treatment tank to biologically treat the liquefied organic matter. Inorganic, thereby reducing excess sludge. However, the inventors of the present invention conducted an experiment on the treatment method of the excess sludge based on ultrasonic waves, and found that although the organic matter is mineralized by the liquefaction of the sludge, the phosphorus in the sludge is soluble due to the liquefaction treatment. However, it is impossible to remove phosphorus in the biological treatment tank, and thus it becomes a significant problem that the treated water containing a high concentration of phosphorus is discharged to the outside of the system. The present invention has been made to solve the above problems, and an object of the present invention is to provide that not only the discharge amount of excess sludge can be reduced, but also
314708.ptd 第7頁 1298712_ •五、發明說明（2) p時除去剩餘污泥中的磷的技術。 【發明内容】 ” 本發明者等人發現以下的處理方法及裝置，做為用於 解決上述課題之手段。 '1、一種可回收磷之有機廢水處理方法，乃於由生物 處理製程及固液分離製程所構成之有機廢水的處理過程當 中，對所產生的剩餘污泥進行處理，其特徵為：濃縮上述 剩餘污泥的一部分或是全部而生成脫離液及濃縮污泥，然 後，對所生成的脫離液進行鱗回收處理，並送回生物處理 或是做為處理水而排放至系統外，同時，對於由剩餘 污泥的濃縮所生成的濃縮污泥進行超音波處理，並送回生 物處理製程。 ^ 2、如上述第1項之方法中，對上述脫離液的磷回收處 環_，是以藉由添加凝集劑於上述脫離液中凝聚沉澱磷酸離 子，並藉以從液體當中分離並除去磷的方式來進行。 • 3、如上述第1項之方法中，對上述脫離液進行磷回收 處理，是以籍由添加氨離子（A m m ο n i u m I ο η )及鎂於上述脫 -離液中，或是藉由添加鈣於上述脫離液中並維持脫離液的 pH值於9以上，使磷結晶析出，藉以從液體當中分離並除 __的方式來進行。 4、一種有機廢水的處理方法，其特徵為：於生物處 理槽中進行有機廢水的生物處理，然後對生物處理槽所排 出的活性污泥混合液進行固液分離，來生成沉澱污泥及處 理水，並濃縮上述剩餘污泥的一部分或是全部而生成脫離314708.ptd Page 7 1298712_ • V. INSTRUCTIONS (2) Techniques for removing phosphorus from excess sludge in p. SUMMARY OF THE INVENTION The inventors of the present invention have found the following treatment methods and apparatuses as means for solving the above problems. 1. A method for treating organic wastewater capable of recovering phosphorus, which is a biological treatment process and solid-liquid treatment In the process of treating the organic wastewater formed by the separation process, the remaining sludge generated is treated, and a part or all of the excess sludge is concentrated to form a detached liquid and a concentrated sludge, and then generated. The detached liquid is subjected to scale recovery treatment, and sent back to the biological treatment or discharged as a treated water to the outside of the system. At the same time, the concentrated sludge generated by the concentration of the excess sludge is ultrasonically treated and returned to the biological treatment. 2. The method according to the above item 1, wherein the phosphorus recovery ring of the above-mentioned separation liquid is obtained by agglomerating and precipitating phosphate ions in the above-mentioned separation liquid by adding a flocculating agent, thereby separating and removing from the liquid. Phosphorus is carried out. 3. In the method of the above item 1, the phosphorus removal treatment of the above-mentioned separation liquid is based on the addition of ammonia ions (A mm ο Nium I ο η ) and magnesium in the above-mentioned de-separation, or by adding calcium to the above-mentioned detachment liquid and maintaining the pH value of the detachment liquid above 9 to precipitate phosphorus crystals, thereby separating and removing from the liquid _ 4. A method for treating organic wastewater, characterized in that biological treatment of organic wastewater is carried out in a biological treatment tank, and then the activated sludge mixture discharged from the biological treatment tank is subjected to solid-liquid separation. Producing precipitated sludge and treated water, and concentrating part or all of the excess sludge to form a detachment
314708.ptd 第8頁 1298712_ 五、發明說明（3) 液及濃縮污泥，然後，對所生成的脫離液進行磷回收處 理，並送回生物處理製程或是做為處理水而排放至系統 外，同時，對於由剩餘污泥的濃縮所生成的濃縮污泥進行 超音波處理，並送回生物處理製程。 5、 如第4項之方法，其中，上述脫離液的磷回收處理 是以藉由添加凝集劑於上述脫離液中凝聚沉澱磷酸離子， 並藉以從液體當中分離並除去磷的方式來進行。 6、 如第4項之方法，其中，上述對脫離液進行磷回收 處理是以藉由添加銨離子及鎂於上述脫離液中，或是藉由 添加鈣於上述脫離液中並維持脫離液的pH值於9以上，使 磷結晶析出，藉以從液體當中分離並除去磷的方式來進 行。 7、 一種可回收磷之有機廢水處理裝置，乃於由生物 處理製程及固液分離製程所構成之有機廢水的處理過程當 中，用於對所產生的剩餘污泥進行處理，其特徵為具備： 濃縮上述剩餘污泥的一部分或是全部而生成脫離液及濃縮 污泥之污泥濃縮機；以對污泥濃縮機所生成的脫離液進行 磷回收處理之磷回收槽；對污泥濃縮機所生成的濃縮污泥 進行超音波處理之超音波處理裝置；以及將超音波處理裝 置所處理的污泥送回生物處理製程之配管。 8、 如第7項之裝置，其中，具備用於將磷回收槽所處 理的處理液送回生物處理製程之配管。 9、 一種有機廢水的處理裝置，其特徵為具備：接收 有機廢水來進行生物處理之生物處理槽；對生物處理槽所314708.ptd Page 8 1298712_ V. INSTRUCTIONS (3) Liquid and concentrated sludge, then the recovered effluent is subjected to phosphorus recovery treatment and returned to the biological treatment process or discharged as treated water to the outside of the system. At the same time, the concentrated sludge generated by the concentration of the excess sludge is ultrasonically processed and returned to the biological treatment process. 5. The method of claim 4, wherein the phosphorus recovery treatment of the separation liquid is carried out by agglomerating and precipitating phosphate ions in the separation liquid by adding a coagulant, thereby separating and removing phosphorus from the liquid. 6. The method according to item 4, wherein the phosphorus recovery treatment of the separation liquid is performed by adding ammonium ions and magnesium to the separation liquid, or by adding calcium to the separation liquid and maintaining the separation liquid. The pH is 9 or more, and phosphorus crystallization is precipitated, whereby the phosphorus is separated and removed from the liquid. 7. An organic wastewater treatment device capable of recovering phosphorus, which is used for treating the excess sludge generated during the treatment of the organic wastewater formed by the biological treatment process and the solid-liquid separation process, and is characterized by: a sludge concentrator that concentrates part or all of the excess sludge to form a detached liquid and a concentrated sludge; and a phosphorus recovery tank that performs phosphorus recovery treatment on the detached liquid generated by the sludge concentrator; An ultrasonic processing device that performs ultrasonic treatment on the generated concentrated sludge; and a pipe that returns the sludge processed by the ultrasonic processing device to the biological treatment process. 8. The apparatus according to item 7, wherein the apparatus for returning the treatment liquid treated by the phosphorus recovery tank to the biological treatment process is provided. 9. An apparatus for treating organic wastewater, characterized by comprising: a biological treatment tank for receiving organic wastewater for biological treatment; and a biological treatment tank
314708.ptd 第9頁 1298712_ 玉、發明說明（4) .出.的活性污泥混合液進行固液分離，而生成沉澱污泥及 處理水之固液分離裝置；濃縮上述固液分離裝置所排出的 沉”澱污泥的一部分或是全部，而生成脫離液及濃縮污泥之 污泥濃縮機；對污泥濃縮機所生成的脫離液進行磷回收處 理之磷回收槽；對污泥濃縮機所生成的濃縮污泥進行超音 波處理之超音波處理裝置；以及將超音波處理裝置所處理 的污泥送回生物處理槽之配管。 1 0、如第9項之裝置，其中，用於將磷回收槽所處理 的處理液，送回生物處理槽之配管。 施方式】 以下，參照圖面來詳細說明本發明的實施型態。 第1圖係顯示，針對有機廢水的生物處理過程中所排 啦之剩餘污泥進行處理的系統上之設置超音波反應製程及 磷.回收製程，遵循本發明的方法之處理流程的概略圖。有 機廢水1供應至生物處理槽2，藉由依據活性污泥之生物處 王莖，使有機廢水1中的有機物無機化。在此，生物處理槽2 可以採用，用於標準活性污泥法、或厭氧需氧法、或硝化 脫氮法、或生物膜法等之用於這些技術上的生物處理槽。 從生物處理槽2所排出的活性污泥混合物3供應至固液 裝置4 (例如沉澱槽），並分離為處理水5及沉澱污泥 6。雖然沉澱污泥6做為回送污泥7被送回生物處理槽2，但 是亦供應回送污泥的至少一部分8至污泥濃縮機1 1，並分 離為濃縮污泥1 2及脫離液1 7。此外，可設置磷釋出槽9來 做為污泥濃縮機1 1的前段，例如在厭氧狀態下藉由攪拌，314708.ptd Page 9 1298712_ Jade, invention description (4). The activated sludge mixture is subjected to solid-liquid separation to form a solid-liquid separation device for sedimentation sludge and treated water; a sludge concentrator that produces a detached liquid and a concentrated sludge, and a phosphorus recovery tank that performs a phosphorus recovery treatment on the detached liquid generated by the sludge concentrator; An ultrasonic processing device for performing ultrasonic treatment on the concentrated sludge generated; and a pipe for returning the sludge processed by the ultrasonic processing device to the biological treatment tank. 10. The device according to item 9, wherein The treatment liquid treated in the phosphorus recovery tank is returned to the piping of the biological treatment tank. The embodiments of the present invention will be described in detail below with reference to the drawings. Fig. 1 shows the biological treatment process for organic wastewater. An overview of the treatment process of the method of the present invention is carried out on the system for treating the excess sludge discharged, and the organic wastewater is supplied to the biological treatment. 2. Inorganizing the organic matter in the organic wastewater 1 by the stem of the biological sludge according to the activated sludge. Here, the biological treatment tank 2 can be used for the standard activated sludge method, or the anaerobic aerobic method, or A biological treatment tank for these techniques, such as a nitrification denitrification method or a biofilm method. The activated sludge mixture 3 discharged from the biological treatment tank 2 is supplied to a solid-liquid device 4 (for example, a sedimentation tank), and is separated into treatments. Water 5 and precipitated sludge 6. Although the settled sludge 6 is sent back to the biological treatment tank 2 as the return sludge 7, at least a part of the returned sludge 8 is supplied to the sludge thickener 1 1 and separated into concentrated sewage. Mud 12 and dissociation liquid 17. In addition, a phosphorus release tank 9 may be provided as the front stage of the sludge concentrator 1 1 , for example, by stirring in an anaerobic state.
314708.ptd 第10頁 1298712 五、發明說明（5) 而釋放出污泥中的聚石粦酸（Ρ ο 1 y p h〇s p h 〇 r i c A c i d )，以提 升送至磷回收製程1 8的脫離液1 7中之填濃度。而在此情況 下，亦可供應有機廢水1的一部分至磷釋出槽9。一旦供應 有機廢水1的一部分至磷釋出槽9的話，則吸附了磷的細菌 將會轉而吸附有機物而釋放出磷，因此較為理想。 從污泥濃縮機排出之脫離液1 7，供應至磷回收製程 1 8。於磷回收製程1 8中，藉由添加銨離子與鎂離子來形成 石粦酸銨鎂(Magnesium Ammonium Phosphate，以下亦稱為 「MAP」）粒子之MAP法，或是添加鈣並維持pH值於9以上來 形成羥填灰石（Hydroxy Apatite，以下亦稱為「HAP」)粒 子之HAP法等之於該技術當中眾所皆知的碟回收法，來固 定•分離脫離液1 7中的溶解性填，並做為碟含有結晶2 〇來 回收。分離並回收了磷之後的處理液1 9被送回生物處理槽 2。在磷回收完畢之處理液1 9的磷濃度或是有機物濃度極 低，並且符合排放標準的情況下，則可做為處理水而排放 至系統外。314708.ptd Page 10 1298712 V. Inventive Note (5) The polychloric acid (Ρ ο 1 yph〇sph 〇ric A cid ) in the sludge is released to enhance the separation liquid sent to the phosphorus recovery process 18 Fill the concentration in 1 7 . In this case, a part of the organic wastewater 1 can also be supplied to the phosphorus releasing tank 9. Once a part of the organic wastewater 1 is supplied to the phosphorus releasing tank 9, the bacteria which adsorb the phosphorus will transfer the organic matter to release the phosphorus, which is preferable. The detached liquid discharged from the sludge concentrator is supplied to the phosphorus recovery process 18 . In the phosphorus recovery process, the MAP method of forming ammonium Magnesium Ammonium Phosphate (hereinafter referred to as "MAP") particles by adding ammonium ions and magnesium ions, or adding calcium and maintaining the pH value is 9 or more to form a Hydroxyapatite (hereinafter referred to as "HAP") particle HAP method, etc., which is well known in the art for disc recovery, to fix and separate the dissolution in the dissociation liquid 17 Strictly filled, and used as a dish containing crystal 2 〇 to recover. The treatment liquid 19 after separation and recovery of phosphorus is returned to the biological treatment tank 2. When the phosphorus concentration of the treatment liquid recovered by phosphorus or the organic matter concentration is extremely low and the emission standard is met, it can be discharged to the outside of the system as treated water.
另一方面，從污泥濃縮機1 1所得到的濃縮污泥i 2，供 應至超音波處理槽1 3來進行超音波處理。由於可藉由提高 供應至超音波處理槽1 3的濃縮污泥1 2的濃度來增加液化 量，而得到極具效率的液化污泥，因此於污泥濃縮機i i 中，污泥的濃度最好濃縮為1至10%，更理想為濃縮至4至 8%。此外，於超音波處理槽丨3當中所採用的超音波振盪器 的消費能量，對於被處理液體量，最好位於1 〇至4 〇 〇 k J / L ’此外’於超音波發射角的單位剖面積的消費能量，最On the other hand, the concentrated sludge i 2 obtained from the sludge thickener 1 1 is supplied to the ultrasonic treatment tank 13 to perform ultrasonic treatment. Since the liquefaction amount can be increased by increasing the concentration of the concentrated sludge 1 2 supplied to the ultrasonic treatment tank 13 to obtain an extremely efficient liquefied sludge, the sludge concentration in the sludge concentrator ii is the most The concentration is preferably from 1 to 10%, more preferably from 4 to 8%. In addition, the energy consumption of the ultrasonic oscillator used in the ultrasonic processing tank 3 is preferably in the range of 1 〇 to 4 〇〇k J / L 'in addition to the ultrasonic emission angle for the amount of liquid to be processed. The energy consumption of the sectional area, the most
1298712_ •五、發'明說明（6) ，在3 0 w / c m 2以上。 從超音波處理槽1 3流出的超音波處理污泥1 4被送回生 i?處理槽2。如循環式的硝化脫氮法般，在脫氮槽包含於 生物處理槽的情況下，由於包含於超音波處理污泥1 4的溶 解性有機物，可做為脫氮反應的氧元素供體來利用，因此 供應超音波處理污泥1 4至脫氮槽的方法，可成為有效的有 機廢水的處理方法。 以下，以實施例來具體說明本發明。本發明並不限定 於此實施例。 例 1 第2圖係顯示於本實施例中所採用，本發明的方法來 處理有機廢水的生物處理過程當中所產生的剩餘污泥，並 實施污泥減量化及磷回收之處理流程。於本實施例中，採 用，由脫氮槽3 1及硝化槽3 2所組成的硝化脫氮槽做為生物處 理槽2，並以污水為有機廢水1。以1 0 m V d的流量，供應處 禮污水於生物處理槽2的脫氮槽3 1。生物處理槽2内的活性 污泥濃度大約為3 0 0 Omg— SS/L。將來自生物處理槽2的硝 -化槽3 2之活性污泥混合液供應至固液分離裝置4。於本實 施例中，採用沉澱池做為固液分離裝置4，將活性污泥混 拳分離為處理水5及沉殿污泥6。從固液分離裝置4所排 出的沉澱污泥6的回送污泥7的流量為4 m V d，污泥濃度約為 1 0 0 0 Omg— SS/L。在這當中，回送3. 36m Vd至生物處理槽2 來做為回送污泥7，而供應剩下的0 . 6 4m 3/ d至磷釋出槽9來 做為被處理污泥8，並與有機廢水1的一部分0 . 5 m 3/ d混合。1298712_ • Five, issued 'clear description (6), above 30 w / c m 2 or more. The ultrasonicated sludge 1 4 flowing out of the ultrasonic processing tank 13 is sent back to the raw tank 2 for processing. As in the case of the cyclic nitrification denitrification method, in the case where the denitrification tank is contained in the biological treatment tank, the dissolved organic matter contained in the ultrasonic treatment sludge 14 can be used as an oxygen element donor for the denitrification reaction. Therefore, the method of supplying ultrasonic treatment sludge 14 to the denitrification tank can be an effective treatment method for organic wastewater. Hereinafter, the present invention will be specifically described by way of examples. The invention is not limited to this embodiment. Example 1 Fig. 2 is a view showing the use of the method of the present invention to treat excess sludge generated in the biological treatment process of organic wastewater, and to carry out a sludge reduction and phosphorus recovery treatment process. In the present embodiment, the nitrification and denitrification tank composed of the denitrification tank 31 and the nitrification tank 3 2 is used as the biological treatment tank 2, and the sewage is used as the organic wastewater. At a flow rate of 10 m V d , the sewage is supplied to the denitrification tank 3 of the biological treatment tank 2. The concentration of activated sludge in the biological treatment tank 2 is approximately 300 mg-SS/L. The activated sludge mixture of the nitrification tank 32 from the biological treatment tank 2 is supplied to the solid-liquid separation device 4. In the present embodiment, the sedimentation tank is used as the solid-liquid separation device 4, and the activated sludge is mixed and separated into the treated water 5 and the sinking sludge 6. The flow rate of the return sludge 7 of the settled sludge 6 discharged from the solid-liquid separation device 4 was 4 m V d , and the sludge concentration was about 10.0 Omg-SS/L. In this case, 3.36m Vd is returned to the biological treatment tank 2 as the return sludge 7, and the remaining 0.64m 3 / d to the phosphorus release tank 9 is supplied as the treated sludge 8 and Mixed with a portion of the organic wastewater 1 of 0.5 m 3 / d.
314708.ptd 第12頁 1298712 五、發明說明（7) 於磷釋出槽9中，進行於厭氧狀態下的攪拌處理，並釋放 出污泥中的聚磷酸。然後將磷釋出槽9所處理的污泥供應 至污泥濃縮機11，並分離為脫離液1 7及濃縮污泥1 2。濃縮 污泥1 2的污泥濃度為5 %，濃縮污泥量為0 . 1 3 m 3/ d。 於污泥濃縮機1 1所得到的脫離液1 7供應至磷回收製程 1 8。於實施例1中的磷回收製程1 8當中，添力〇聚氯化鋁 (Poly Aluminum Chloride，PAC )於脫離液 1 7 中做為凝集 劑，藉由凝聚磷並從液體當中沉積，而除去磷。在添加1. 2 g / L的P A C於脫離液1 7後5則如弟1表所不般’填回收完畢 之處理水1 9的磷酸離子濃度減少至0. 5mg/L。此外，亦得 到SS為1 mg/L以下的良好的處理水，因此可直接排放至系 統外。 第1表：實施例1中之污泥濃縮脫離液1 7與磷回收完畢之處 理水1 9的性質 脫離液 石粦回收完畢之處理水 P04 —P (mg/L) 40 0.5 SS (mg/L) 45 <1 於污泥濃縮機1 1所得到的濃縮污泥1 2，被供應至超音 波反應槽1 3來進行超音波處理。於超音波反應槽1 3中所採 用的超音波發射器的實質消費電力為7 0 0 w (電力量：一天 為1 . 8 k w h )。此外，單位污泥量的照射強度為5 0 k J / L。超 音波處理後的污泥1 4回送至生物處理槽2的脫氮槽3 1。314708.ptd Page 12 1298712 V. INSTRUCTION DESCRIPTION (7) In the phosphorus release tank 9, agitation is performed in an anaerobic state, and polyphosphoric acid in the sludge is released. Then, the sludge treated by the phosphorus release tank 9 is supplied to the sludge concentrator 11, and separated into a detached liquid 17 and a concentrated sludge 12. The sludge concentration of the concentrated sludge 1 2 was 5%, and the amount of concentrated sludge was 0.13 m 3 / d. The detachment liquid 17 obtained in the sludge concentrator 1 1 is supplied to the phosphorus recovery process 18 . In the phosphorus recovery process 18 of the first embodiment, Poly Aluminum Chloride (PAC) is used as an aggregating agent in the dissociation liquid 17 to be removed by agglomerating phosphorus and depositing from the liquid. phosphorus. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。. In addition, good treated water with SS below 1 mg/L is also available, so it can be directly discharged outside the system. Table 1: The sludge concentration and deionization liquid in Example 1 and the treatment water after the phosphorus recovery was completed. The nature of the treatment liquid was separated from the liquid water. The treated water P04-P (mg/L) 40 0.5 SS (mg/ L) 45 <1 The concentrated sludge 1 obtained in the sludge thickener 1 1 is supplied to the ultrasonic reaction tank 13 for ultrasonic treatment. The actual power consumption of the ultrasonic transmitter used in the ultrasonic reaction tank 13 is 700 w (power amount: one day is 1.8 kw h). In addition, the irradiation intensity per unit sludge amount is 50 kJ / L. The ultrasonically treated sludge 14 is sent back to the denitrification tank 31 of the biological treatment tank 2.
314708.ptd 第13頁 1298712 -五、發'明說明（8) w -第2表顯示實施例1的處理過程中之超音波處理前的濃 縮污泥1 2及超音波處理後的污泥1 4的性質。從第2表可得 4，於本實施例中，相較於超音波處理前的階段、超音波 處理後的污泥1 4的溶解性成分增加，而污泥也被液化。 第2表：實施例1中之回送污泥及超音波處理污泥的性質 回送污泥 超音波處理污泥 SS (mg/L) 50000 — CODCr (mg/L) 46700 — S-CODCr (mg/L) 20 2300314708.ptd Page 13 1298712 -5,Fa Ming Description (8) w - Table 2 shows the concentrated sludge before ultrasonic treatment in the process of Example 1 and the sludge after ultrasonic treatment 1 The nature of 4. From the second table, 4 is obtained. In the present embodiment, the solubility component of the sludge 14 after the ultrasonic treatment is increased compared to the stage before the ultrasonic treatment, and the sludge is also liquefied. Table 2: Properties of the returned sludge and ultrasonic treated sludge in Example 1. Returning sludge Ultrasonic treatment sludge SS (mg/L) 50000 — CODCr (mg/L) 46700 — S-CODCr (mg/ L) 20 2300
S-CODCr :溶解性 CODS-CODCr : Solubility COD
第3表顯示實施例1中本發明的剩餘污泥處理的組合情 況之生物處理系統的處理水5的水質。從第3表可得知，於 本_實施例中，可得到S S為1 0 m g / L，C 0 D Cr 3 0 m g / L的良好的 處理水水質。此外，亦可得到全鱗為0 . 5mg/L的，良好水 質。 第3表：實施例1中之污水及處理水的水質 污水 處理水 SS (mg/L) 66 8 CODCr (mg/L) 300 28 S-CODCr (mg/L) 190 16 全氮(mg/L) 27 7 全填(mg/L) 3.5 0.5 ··The third table shows the water quality of the treated water 5 of the biological treatment system of the combination of the excess sludge treatment of the present invention in the first embodiment. As can be seen from the third table, in the present embodiment, a good treated water quality of S S of 10 m g / L and C 0 D Cr 3 0 m g / L was obtained. In addition, a full scale of 0.5 mg / L, good water quality can also be obtained. Table 3: Water quality of sewage and treated water in Example 1 Sewage treatment water SS (mg/L) 66 8 CODCr (mg/L) 300 28 S-CODCr (mg/L) 190 16 Total nitrogen (mg/L) ) 27 7 Full Fill (mg/L) 3.5 0.5 ··
第14頁 314708.ptd 1298712 五、發明說明（9) ’ · 第3圖係顯示，本實施例之剩餘污泥處理的組合生物._ 處理過程中生物處理槽2内的污泥量的變化。在大約6 0天 的連續運轉下，生物處理槽2内的污泥量穩定的維持在 1 0kg左右，因此可以得知，可藉由本發明的剩餘污泥處理 ' 來降低剩餘污泥的產生量。 ‘ 實施例2 於本實施例中，與實施例1相同，採用如第2圖所示的 系統來做為磷回收製程1 8，來進行依據HAP法之磷的回 收。採用污水為有機廢水1，並以1 0 m 3/ d的流量，供應污水 於生物處理槽2的脫氮槽3 1。生物處理槽2内的活性污泥濃 度大約為3 0 0 0mg— SS/L。將來自生物處理槽2的硝化槽32 之活性污泥混合液供應至固液分離裝置4。於本實施例 中，亦與實施例1相同，採用沉澱池方式做為固液分離裝 < 置4，將活性污泥混合液3分離為處理水5及沉澱污泥6。從 ^ 固液分離裝置4所排出的沉澱污泥6的流量為4m 3/d，污泥濃 度大約為1 OOOOmg- SS/L。在這當中，回送3. 36m3/d至生物 · 處理槽2的脫氮槽3 1來做為回送污泥7，而供應剩下的0 . 6 4 m 3/d至磷釋出槽9來做為被處理污泥8，並與有機廢水1的一 ~ 部分0. 5m3/d混合。於磷釋出槽9中，亦進行與實施例1相同 的處理，而釋放出污泥中的聚磷酸。然後將磷釋出槽9所 Φ籲 處理的污泥供應至污泥濃縮機1 1，並分離為脫離液1 7及濃 縮污泥1 2。濃縮污泥1 2的污泥濃度為5 %，濃縮污泥量為0 . 1 3 m 3/ d 〇 於污泥濃縮機1 1所得到的脫離液1 7供應至磷回收製程 -Page 14 314708.ptd 1298712 V. INSTRUCTION DESCRIPTION (9) ' Figure 3 shows the change in the amount of sludge in the biological treatment tank 2 during the treatment of the remaining sludge treated in the present embodiment. In the continuous operation of about 60 days, the amount of sludge in the biological treatment tank 2 is stably maintained at about 10 kg, so that it can be seen that the amount of excess sludge generated can be reduced by the excess sludge treatment of the present invention. . <Example 2 In this example, in the same manner as in Example 1, the system shown in Fig. 2 was used as the phosphorus recovery process 18 to carry out the recovery of phosphorus according to the HAP method. The sewage is used as the organic wastewater 1, and the sewage is supplied to the denitrification tank 31 of the biological treatment tank 2 at a flow rate of 10 m 3 /d. The activated sludge concentration in the biological treatment tank 2 is approximately 3,000 mg-SS/L. The activated sludge mixture from the nitrification tank 32 of the biological treatment tank 2 is supplied to the solid-liquid separation device 4. In the present embodiment, also in the same manner as in the first embodiment, the activated sludge mixture 3 is separated into the treated water 5 and the settled sludge 6 by using a sedimentation tank method as a solid-liquid separation device. The flow rate of the settled sludge 6 discharged from the solid-liquid separation device 4 was 4 m 3 /d, and the sludge concentration was approximately 10,000 mg/SS/L. In this case, 3.36m3/d is returned to the denitrification tank 3 1 of the biological treatment tank 2 as the return sludge 7, and the remaining 0.64 m 3/d is supplied to the phosphorus release tank 9 5m3/d混合。 Mixed with the sludge 9 and mixed with one part of the organic wastewater 1 0. 5m3 / d. In the phosphorus release tank 9, the same treatment as in Example 1 was carried out to release polyphosphoric acid in the sludge. Then, the sludge which has been treated by the phosphorus release tank 9 is supplied to the sludge thickener 1 1 and separated into the separation liquid 17 and the concentrated sludge 1 2 . The sludge concentration of the concentrated sludge 1 2 is 5%, and the amount of concentrated sludge is 0.13 m 3 / d 脱离 The detachment liquid obtained in the sludge concentrator 1 1 is supplied to the phosphorus recovery process -
314708.ptd 第 15 頁 1298712 ，五、發'明說明（ίο) 8。·於實施例2中的磷回收製程1 8當中，採用填充有磷礦 石的圓柱成為磷回收製程1 8，並添加熟石灰（氫氧化鈣）於 脫離液1 7中，來進行鹼性的調整及鈣的供應，使> 磷做為 HAP : Ca50H(P04)转晶析出，並沉積分離來進行依據HAP法 之磷的回收。第4表顯示，於磷回收製程1 8中之污泥濃縮 脫離液1 7與磷回收完畢之處理水1 9的水質。從第4表可得 知，於磷回收製程1 8中，從污泥濃縮脫離液1 7當中，溶解 性的填被分離而除去。鱗回收完畢之處理液1 9被直接排放 至系統外。 :實施例2中之污泥濃縮脫離液1 7與磷回收完畢之處 理水1 9的性質 脫離液 磷回收完畢之處理水 P〇4 —P (mg/L) 36 0.4 pH 7.2 8.1 於污泥濃縮機1 1所得到的濃縮污泥1 2，全部供應至超 音波反應槽1 3，以與實施例1相同的條件來進行超音波處 理。超音波處理後的污泥1 4回送至生物處理槽2的脫氮槽 ·· 第5表顧示實施例2的處理過程中之超音波處理前的濃 縮污泥1 2及超音波處理後的污泥1 4的性質。從第5表可得 知，於本實施例中，相較於超音波處理前的階段，超音波 處理後的污泥1 4的溶解性成分亦增加，而污泥也被液化。314708.ptd Page 15 1298712, five, issued 'clear instructions (ίο) 8. - In the phosphorus recovery process 18 of the second embodiment, a column filled with phosphate ore is used as a phosphorus recovery process 18, and slaked lime (calcium hydroxide) is added to the dissociation liquid 17 to adjust the alkalinity. The supply of calcium causes > phosphorus to be crystallized as HAP: Ca50H (P04), and the separation is carried out to carry out the recovery of phosphorus according to the HAP method. The fourth table shows the water quality of the treated water in the phosphorus recovery process 18 and the treated water. As is apparent from the fourth table, in the phosphorus recovery process 18, the soluble packing is separated and removed from the sludge concentration and separation liquid 17. The treatment liquid that has been recovered from the scales is discharged directly to the outside of the system. : Sludge Concentrate and Separation Solution in Example 2 1 and Treatment of Phosphorus Recovered Water Properties of Separated Liquid Phosphorus Recovered Water Treatment P〇4 —P (mg/L) 36 0.4 pH 7.2 8.1 In Sludge The concentrated sludge 1 2 obtained by the concentrator 1 1 was all supplied to the ultrasonic reaction tank 13 and subjected to ultrasonic treatment under the same conditions as in the first embodiment. The sludge treated by the ultrasonic treatment is sent back to the denitrification tank of the biological treatment tank 2. The fifth table shows the concentrated sludge before the ultrasonic treatment in the treatment of the second embodiment, and after the ultrasonic treatment. The nature of sludge 14. As is apparent from the fifth table, in the present embodiment, the solubility component of the sludge 14 after the ultrasonic treatment is also increased, and the sludge is also liquefied as compared with the stage before the ultrasonic treatment.
314708.ptd 第16頁 1298712 五、發明說明（11) 第5表：實施例2中之回送污泥及超音波處理污泥的性質 回送污泥 超音波處理污泥 SS (mg/L) 49800 — CODCr (mg/L) 46500 — S-CODCr (mg/L) 20 2300 有機酸（mg/L) <10 <10314708.ptd Page 16 1298712 V. INSTRUCTIONS (11) Table 5: Properties of the returned sludge and ultrasonic treated sludge in Example 2 Returning sludge Ultrasonic treatment sludge SS (mg/L) 49800 — CODCr (mg/L) 46500 — S-CODCr (mg/L) 20 2300 Organic Acid (mg/L) <10 <10
S_CODCr :溶解性 COD 第6表顯示實施例2之本發明剩餘污泥處理的組合情況 之生物處理系統的處理水5的水質。從第6表可得知，於本 實施例中，可得到S S為8 m g / L，C 0 D c為2 4 m g / L的良好的處 理水水質。此外，亦可得到全磷為0 . 4mg/L的良好水質。 第6表：實施例2中之污水及處理水的水質 污水 處理水 SS (mg/L) 66 8 CODCr (mg/L) 300 28 S-CODCr (mg/L) 190 16 全氮(mg/L) 27 7 全填(mg/L) 3.5 0.4 第4圖係顯示，本實施例之剩餘污泥處理的組合生物 處理過程中生物處理槽2内的污泥量的變化。在大約6 0天 的連續運轉下，生物處理槽2内的污泥量穩定的維持在 1 0 kg左右，因此可以得知，可藉由本發明的剩餘污泥處理S_CODCr: Solubility COD Table 6 shows the water quality of the treated water 5 of the biological treatment system in the case of the combination of the excess sludge treatment of the present invention of Example 2. As can be seen from the sixth table, in the present embodiment, a good treated water quality of S S of 8 m g / L and C 0 D c of 2 4 m g / L was obtained. In addition, good water quality with a total phosphorus of 0.4 mg/L can also be obtained. Table 6: Water quality of sewage and treated water in Example 2 Sewage treatment water SS (mg/L) 66 8 CODCr (mg/L) 300 28 S-CODCr (mg/L) 190 16 Total nitrogen (mg/L) 27 7 Full Fill (mg/L) 3.5 0.4 Fig. 4 shows the change in the amount of sludge in the biological treatment tank 2 during the combined biological treatment of the excess sludge treatment of the present embodiment. Under the continuous operation of about 60 days, the amount of sludge in the biological treatment tank 2 is stably maintained at about 10 kg, so that it can be known that it can be treated by the excess sludge of the present invention.
314708.ptd 第17頁 1298712 ，五、發'明說明（12) 、來降低剩餘污泥的產生量。 比車交 < 列 於比較例中，採用第5圖所示的裝置，以超音波來液 化在有機廢水的生物處理過程中所排出之剩餘污泥，進行 送回生物處理槽2的脫氮槽3 1的處理。採用污水為有機廢 水1，並以1 0 m 3/d的流量，供應污水於生物處理槽2的脫氮 槽31。生物處理槽2内的活性污泥濃度大約為3 0 0 0mg— SS/ L。將來自生物處理槽2的硝化槽3 2之活性污泥混合液供應 至固液分離裝置4。於本比較例中，採用沉澱池方式做為 分離裝置4，將活性污泥混合液3分離為處理水5及沉 澱污泥6。從固液分離裝置4所排出的沉澱污泥6的流量為 4 m 3/ d，污泥濃度大約為1 0 0 0 0 ni g— S S / L。 ^ 於本比較例中，從固液分離裝置4所排出的沉澱污泥 6:全部被供應至超音波反應槽1 3來進行超音波處理。超 音波處理的條件與實施例1及實施例2相同。超音波處理後 的污泥1 4則送回生物處理槽2。 第7表顯示本比較例的處理過程中之超音波處理前的 -沉澱污泥6及超音波處理後的污泥1 4的性質。從第7表可得 知，於本比較例中，顯示了污泥經由超音波處理而液化， __與實施例1、2相較，污泥的溶解性成分減少。314708.ptd Page 17 1298712, five, issued a clear description (12), to reduce the amount of excess sludge produced. In comparison with the vehicle, in the comparative example, the apparatus shown in Fig. 5 is used to liquefy the excess sludge discharged in the biological treatment process of the organic wastewater by ultrasonic waves, and the nitrogen is sent back to the biological treatment tank 2. The processing of the slot 3 1 . The sewage is used as the organic waste water 1, and the sewage is supplied to the denitrification tank 31 of the biological treatment tank 2 at a flow rate of 10 m 3 /d. The concentration of activated sludge in the biological treatment tank 2 is approximately 3,000 mg-SS/L. The activated sludge mixture from the nitrification tank 32 of the biological treatment tank 2 is supplied to the solid-liquid separation device 4. In the present comparative example, the sedimentation tank was used as the separation device 4, and the activated sludge mixture 3 was separated into the treated water 5 and the settled sludge 6. The flow rate of the settled sludge 6 discharged from the solid-liquid separation device 4 is 4 m 3 /d, and the sludge concentration is approximately 1 000 nm g - S S / L. In the comparative example, the precipitated sludge 6 discharged from the solid-liquid separation device 4 is all supplied to the ultrasonic reaction tank 13 to perform ultrasonic treatment. The conditions of the ultrasonic processing are the same as those of the first embodiment and the second embodiment. The ultrasonic treated sludge 14 is returned to the biological treatment tank 2. The seventh table shows the properties of the precipitated sludge 6 before the ultrasonic treatment and the sludge 14 after the ultrasonic treatment in the process of the present comparative example. As is apparent from the seventh table, in the comparative example, it was revealed that the sludge was liquefied by ultrasonic treatment, and the solubility component of the sludge was reduced as compared with Examples 1 and 2.
314708.ptd 第18頁 1298712 五、發明說明（13) 第7表··比較例中之回送污泥及超音波處理污泥的性質 回送污泥 超音波處理污泥 SS (mg/L) 52000 一 CODCr (mg/L) 50000 — S-CODCr (mg/L) 24 630 Kj-N 3330 — S-Kj-N 6 51.7314708.ptd Page 18 1298712 V. INSTRUCTIONS (13) Table 7 · The properties of the returned sludge and ultrasonic treated sludge in the comparative example. The sludge is sent to the ultrasonic treatment sludge SS (mg/L) 52000 CODCr (mg/L) 50000 — S-CODCr (mg/L) 24 630 Kj-N 3330 — S-Kj-N 6 51.7
S-CODCr :溶解性 CODS-CODCr : Solubility COD
Kj-N:凱式氮（Kjeldahl Nitrogen) S-Kj-N:溶解性凱式氮（Kjeldahl Nitrogen) 第8表顯示比較例中剩餘污泥處理的組合情況之生物 處理系統的處理水5的水質。從第8表可得知，於本比較例 中，相.較於實施例1、2，比較例的處理水SS以及COD c均較 高，因而得知比較例的水質較差。此外，處理水的SS亦比 實施例為高，而這可能如第6圖所示，因為生物處理槽内 的污泥量減少，而使生物處理槽2内的污泥亦往處理水5流 出。此外，處理水5的填為4 · 1 m g / L，再加上來自於S S的 石粦，因此處理水5的構比原水還高。Kj-N: Kjeldahl Nitrogen S-Kj-N: Kjeldahl Nitrogen Table 8 shows the water quality of the treated water of the biological treatment system in the combination of excess sludge treatment in the comparative example. . As can be seen from the eighth table, in the comparative example, the treated water SS and the COD c of the comparative examples were higher than those of the first and second examples, and thus the water quality of the comparative example was found to be poor. In addition, the SS of the treated water is also higher than that of the embodiment, and this may be as shown in Fig. 6, because the amount of sludge in the biological treatment tank is reduced, and the sludge in the biological treatment tank 2 is also discharged to the treated water 5 . Further, the treatment water 5 is filled at 4 · 1 m g / L, and the stone sputum from S S is added, so that the structure of the treated water 5 is higher than that of the raw water.
314708.ptd 第19頁 1298712 -五、發明說明（14) •第8表：比較例中之污水及處理水的水質 污水 處理水 、 SS (mg/L) 66 76 CODCr (mg/L) 300 118 S-CODCr (mg/L) 190 29 全氮(mg/L) 27 6 全碟(mg/L) 3.5 4.1 第6圖係顯示，比較例之剩餘污泥處理的組合生物處 程中生物處理槽2内的污泥量的變化。於本比較例 中，污泥的流出極為激烈，於第3 5天停止運轉。於本比較 例的系統中，無法進行安定的生物處理。 1/產業上之可利用性] …根據本發明之剩餘污泥的處理方法，可顯著的降低在 依據生物處理之有機廢水的處理過程當中所產生的剩餘污 龙的量，且可以同時除去污泥中的磷。並且，關於用在減 少剩餘污泥的產生量所需的動力量，只需要少量的動力量 即可達成。亦即，根據本發明，因為採用了用於沉澱污泥 的處理之超音波處理，因此除了以少量的動力消耗量來達 ##外，還可以小型且簡單的處理裝置來達成。314708.ptd Page 19 1298712 - V. INSTRUCTIONS (14) • Table 8: Water quality of sewage and treated water in the comparative example Sewage treatment water, SS (mg/L) 66 76 CODCr (mg/L) 300 118 S-CODCr (mg/L) 190 29 total nitrogen (mg/L) 27 6 full dish (mg/L) 3.5 4.1 Figure 6 shows the biological treatment tank in the combined biological process of the remaining sludge treatment of the comparative example The amount of sludge in 2 changes. In this comparative example, the outflow of the sludge was extremely intense, and the operation was stopped on the 35th day. In the system of this comparative example, stable biological treatment could not be performed. 1/Industrial Applicability] The method for treating excess sludge according to the present invention can significantly reduce the amount of residual contaminated dragon generated during the treatment of organic wastewater according to biological treatment, and can simultaneously remove the sewage Phosphorus in the mud. Further, regarding the amount of power required to reduce the amount of excess sludge generated, only a small amount of power is required. That is, according to the present invention, since the ultrasonic treatment for the treatment of precipitating sludge is employed, it can be achieved by a small and simple processing apparatus in addition to a small amount of power consumption up to ##.
314708.ptd 第20頁 1298712 圖式簡單說明 【圖式簡單說明】 第1圖係顯示遵循本發明的方法，對於從有機廢水的 生物處理過程中所排出之剩餘污泥，進行超音波處理及磷 回收處理之處理流程的概略圖。 第2圖係顯示於本發明的實施例中所採用並結合有依 據本發明的污泥減量處理及磷回收處理之有機廢水的生物 處理糸統的流程圖。 第3圖係顯示實施例1中之生物處理槽内的污泥量變化 之圖。 第4圖係顯示實施例2中之生物處理槽内的污泥量變化 之圖。 第5圖係顯示於比較例中所採用，並結合依據超音波 處理的污泥減量處理之有機廢水的生物處理系統的流程 第6圖係顯示比較例中之生物處理槽内的污泥量變化 之圖。 於各個圖面中，參照符號是指以下的構成要素。 1 有 機 廢 水 2 生 物 處 理 槽 3 活 性 污 泥 混合物 4 固 液 分 離 裝置 5 處 理 水 6 沉 澱 污 泥 7 回 迗 污 泥 8 回 迗 污 泥 的一部分 9 磷 釋 出 槽 10 處 理 污 泥 11 污 泥 濃 縮 機 12 濃 縮 污 泥314708.ptd Page 20 1298712 Brief description of the drawing [Simplified description of the drawing] Figure 1 shows the method of the present invention for ultrasonic treatment and phosphorus removal of excess sludge discharged from the biological treatment of organic wastewater. An overview of the process flow for recycling. Fig. 2 is a flow chart showing the biological treatment system of the organic wastewater according to the embodiment of the present invention and incorporating the sludge reduction treatment and the phosphorus recovery treatment according to the present invention. Fig. 3 is a view showing the change in the amount of sludge in the biological treatment tank in the first embodiment. Fig. 4 is a view showing the change in the amount of sludge in the biological treatment tank in the second embodiment. Fig. 5 is a flow chart showing the amount of sludge in the biological treatment tank in the comparative example, which is shown in the comparative example and is combined with the biological treatment system of the organic wastewater according to the ultrasonic treatment of sludge reduction treatment. Picture. In each drawing, the reference symbol means the following constituent elements. 1 Organic wastewater 2 Biological treatment tank 3 Activated sludge mixture 4 Solid-liquid separation device 5 Treatment water 6 Precipitant sludge 7 Back sludge 8 Part of the sludge 9 Phosphorus release tank 10 Treatment sludge 11 Sludge thickener 12 concentrated sludge
314708.ptd 第21頁 1298712 *圖式簡‘單說明 13 - 超 音 波 處 理 槽 14 超 音 波 處 理污泥 17 脫 離 液 18 石粦 回 收 製 程 19 填 回 收 完 畢 之處理液 20 石粦 含 有 結 晶 21 酸 發 酵 槽 22 酸 發 酵 污 泥 31 脫 氮 槽 32 硝 化 槽 ·· ··314708.ptd Page 21 1298712 * Schematic 'Description' 13 - Ultrasonic treatment tank 14 Ultrasonic treatment of sludge 17 Dissociation liquid 18 Stone recovery process 19 Filled and recovered treatment liquid 20 Stones containing crystals 21 Acid fermentation tank 22 Acid Fermented Sludge 31 Denitrification Tank 32 Nitrification Tank·····
314708.ptd 第22頁314708.ptd Page 22
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