TW201212974A - Method for quickly removing hazardous matters from MSWI fly ash - Google Patents

Method for quickly removing hazardous matters from MSWI fly ash Download PDF

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TW201212974A
TW201212974A TW99132445A TW99132445A TW201212974A TW 201212974 A TW201212974 A TW 201212974A TW 99132445 A TW99132445 A TW 99132445A TW 99132445 A TW99132445 A TW 99132445A TW 201212974 A TW201212974 A TW 201212974A
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fly ash
water
solid
extraction
ash
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TW99132445A
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Chinese (zh)
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TWI472356B (en
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Kun-Sen Chang
Kun-Bin Chiou
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Univ Nat United
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Priority to CN201110062118.3A priority patent/CN102416395B/en
Priority to SG2011064177A priority patent/SG179361A1/en
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Abstract

Clean water as an extractant for extracting hazardous matters from municipal solid waste incineration (MSWI) fly ash is applied in a low liquid-to-solid (L/S) ratio and high speed stirring condition. Under this condition, the broken MSWI fly ash easily releases much matters into water and also creates high concentration of OH- ion enhancing hazardous species, including Pb species, transform into water soluble species. Therefore, hazardous matters in MSWI fly ash can be quickly removed, and non-hazardous fly ash is obtained and can be further provided for reuse. In the process of this invention, MSWI fly ash and clean water are first prepared, and then high speed stirring extraction at a low L/S condition is accomplished. Thereafter, fly ash slurry is settled for submerging extraction and solid-liquid separation is subsequently carried out. Wastewater generated from solid-liquid separation goes forward to wastewater treatment facility and dewatered fly ash is dried and ground. Finally, grinding fly ash is detected in both of TCLP leaching toxicity and dioxins content. If such detections all pass regulatory limits, the fly ash is non-hazardous and can be further reuse; otherwise, fly ash should be returned to the beginning step for advanced treatment.

Description

201212974 六、發明說明: 【發明所屬之技術領域】 本發明係與垃圾焚化產生有害飛灰之處理技術領域有關,更 詳而言之是可將垃圾焚化飛灰中有害之重金屬、戴奥辛物質快速 移除,使處理後飛灰檢測低於法規標準,而成為無害且可再利用 物質之快速去除垃圾焚化飛灰有害物質之方法。 【先前技術】 垃圾經焚化處理後產生之飛灰,常稱為垃圾焚化飛灰 (municipal solid waste incineration fly ash, or MS WI fly ash )。由 於焚化溫度常介於850-1,050。0垃圾中沸點較焚化溫度為低之重 金屬,即易氣化,隨著廢氣及飛灰進入焚化廠空污防制設備中, 其後重金屬冷凝並多數附著於飛灰上。此外,垃圾中若有含氯有 機物等,焚化及空污防制過程將有前趨物合成(precurs〇r synthesis ) 及再合成(de novo synthesis)反應’形成微量之戴奥辛,多數亦 凝附於飛灰上。201212974 VI. Description of the invention: [Technical field to which the invention pertains] The present invention relates to the technical field of treatment of harmful fly ash from waste incineration, and more specifically to the rapid removal of harmful heavy metals and dioxin substances in waste incineration fly ash. In addition, the treatment of fly ash after treatment is lower than the regulatory standards, and it becomes a method for quickly removing harmful substances from waste incineration fly ash by harmless and reusable substances. [Prior Art] The fly ash produced after the incineration of garbage is often referred to as the municipal solid waste incineration fly ash (or MS WI fly ash). Since the incineration temperature is usually between 850-1,050.0, the heavy metal whose boiling point is lower than the incineration temperature is easy to gasify. As the exhaust gas and fly ash enter the air pollution control equipment of the incineration plant, the heavy metal condenses and Most are attached to fly ash. In addition, if there is chlorine-containing organic matter in the garbage, the incineration and air pollution control processes will have a precursor synthesis and a de novo synthesis reaction to form a trace amount of dioxin, and most of them are also condensed on Fly on the ash.

依我國現行法規,垃圾焚化飛灰是否有害,須依有宝事業廢 棄物認定標準檢測飛灰:(1)毒性特性溶出程序(t〇xic& 及(2)戴 characteristic leaching procedure, TCLP)之重金屬濃度 奥辛總毒性當量濃度(簡稱戴奥辛總量)。環保署多年來定期檢 測國内各焚化廠產出飛灰之TCLP重金屬濃度及戴奥辛總量,才八 測結果多係Pb逾TCLP法規標準(5.0 mg/L),部分則為Cd逾 TCLP法規標準(1.〇 mg/L) ’其餘重金屬溶出值均低於、去 規標準。此外’檢測各焚化廠產出飛灰之戴奥辛總量值皆低於、去 201212974 規鮮α〇 ng _/g)。由上述可知,在現今_法規下,垃 圾焚化歧為有害事業廢棄物均係重金屬逾TCLP法規標準所致。 Η ―目則我·世界部分先進_,均將有害飛錢以水泥及化 學知疋劑進仃HHb/歡倾理,再將飛灰·物運送至獨立之衛 生掩埋场進仃掩埋。唯鱗法不僅無法將飛灰再糊,且增加廢 棄物體積、耗祕埋場有限郎、徒增處理成本;更有甚者,因 飛灰固化不實或掩埋場降雨L域翻化物忖害物質溶出 而污染水土環境。故如何不再將垃圾焚化飛灰固化掩埋,而改以 有f去除飛灰中有害物質,使處理後飛灰達到法規之無害標準(包 括付合TCLP重金屬溶出及戴奥辛總量標準),係飛灰邁向再利 用之重要課題! I在有關&圾或其他物質焚化或高溫處理後之飛灰及底渣 (bottom ash orbottomresidue%_術之中華民國發明或新型專 利案或公開案如下: 么月第301697遽「灰燼之穩定與再利用」;發明第观蝴 號使灰伤轉變成惰性之方法」;發明第偏似號「灰炼融方法 及灰炫融爐」;發明第5_號「再加工垃圾熱處理之爐細 或灰燼之方法」’第1278442號「除去底灰所含氯化物之方法及裝 置」;第則物號「廢棄物焚化衍生飛灰重金屬去除之方法」; 第1314543號「煤灰製成吸附材料之方法」;第1328095號「焚化 爐飛灰再利用處理方法」;第1325795號「使用鱗酸二約二水合物 粉末穩定於焚化爐総重金屬及氣味控制之方法」;帛測卿 號「分解戴奥辛之方法與裝置」;第128麵號「焚化底潰水洗程 201212974 序」,第1257330號「焚化飛灰之處理方法及裝置」;第I256377 號游泥沙混合飛灰處理方法及其製品」;帛1231234號「焚化爐 排放戴奥辛類化合物之處理劑及程序」;發明公開第52355〇號「以 電弧爐將垃圾焚化飛灰回收再利用之練鋼方法」;發明公開第 2〇聰123 ’含重金屬焚化飛灰無害化之處理方法」;第廳9_ 號「飛灰螯合劑混合添加設備」等專利案及公開案。 進-步說明前揭與本發明案較相近之垃圾焚化飛灰處理技 術。其中兩案為本案發明人之專利技術,其—為第1311494號「廢 籲棄姆化衍线灰重金縣除之方法」,财法係針對焚化廠内 不同處所產生含不同重金屬種類之原始飛灰及反應飛灰,將二者 飛灰取出帅反於㈣濃度_之數量混合,俾先行降低混合飛 灰之重金屬濃度,再藉4—8倍水及1G_24小時萃取方式去除飛灰 ^重金屬。其二為發明公開第2_3123號「含重金屬焚化飛灰 無害化之處理方法」,财法係針對焚化廠產出之匯合飛灰(即 進入固化廠前之匯合飛灰),先進行第一階段清水或弱驗液 • (〇.001—〇.05 N之Na〇H)萃取,即在液固(乾重)比2_3及100_25〇 _下’進行4-12小時萃取,其後靜置飛灰泥裝8_16小時,再 進行固液分離;第i段萃取後之飛朗進行第二階段中等濃度 酸液(0.5-2.0 Μ之H2S04或随〇3)萃取,液固(濕1〇’一^ 及100-25Gipm下’進行4_12小時萃取,以去除飛灰之重金屬。 此外,第1328095號「焚化爐飛灰再利用處理方法」,係將 飛灰經過穩定化-次樹絲覆加玉、造粒加卫、混料二次樹脂包 匡加工、模塑成型加工等步驟,再利用為非危險虹程之^成 201212974 第5733〇5虎焚化飛灰之處理方法及裳置」,係先將飛灰水 洗除亂、分離,其後將飛灰捏合送至水泥加熱室。 由前軸社⑽焚化贼處财材知,’錄技術係採用 古匕穩德、氣化、高溫炫融等方式,其機制分別為:藉固定化 $疋化樂劑將飛灰固相有害物質岐化而不易溶出;藉高溫將 ,火口相有害物質分解或轉化為氣相物質而移出;除藉高溫將飛 =固相有害物質分解或轉化為氣相物f而移料,亦藉高溫使飛 灰热機物炫融進而㈣飛灰,故亦不易溶出。本案發明人對飛灰 之處理技触要係採萃取卿,即將飛灰#害歸由固相移出至 液相而去除,至於本發明案與本發明人之前兩案之内容綱要與差 異性,概述如下: ⑴第-案(第1311494號):針對焚化廠之原始飛灰、反 應飛灰提出不同之混合方法;其後以4_8倍水及队%小時萃取 方式去除飛灰重金屬。 ⑵第二案(公開第2_3123號):國内垃圾焚化薇為因 應飛灰固化處理之方便性,故薇内空污防制設備收集飛灰後,絕 大多數均經由廠⑽灰輸送管道匯合後進人處理設備。本案 為更符合實雜及新穎性,故不再針對原始飛灰、反應飛灰,而 以進入飛灰處理設備前之匯合飛灰為·;本歸二階段式 (清水或弱、中等濃度酸液)、刚_25() _及4]2小時操 作條件,進行飛灰重金屬之去除萃取。 ” (3)本申請案:為更快速且有效去除飛灰有害物質(包括重 金屬及戴奥辛),本案發明人進—步深人研奴發現更實用、更 201212974 佳之技術,遂提出本中請案。本案對象係焚化廠產出之匯合飛灰; 採用低液固比(2-5)、高轉速(5〇(M,5〇〇rpm)、短時間(㈣ min)之清水萃取方法,驗證可快速移出歧重金屬及降低戴奥辛 總量,達到處理後飛灰無害之標準。 【發明内容】 本發明之主要目的係提供-種快速去除垃圾焚化飛灰有害 物質之方法,其處理對象為垃圾焚化薇焚化後產出之匯合飛灰(即 進入固化處理設備前之匯合飛灰),可快速且有效移除飛灰有害 物質,俾處理後之無害飛灰能作為再利用之原料,達到「轉華,、 「資源再利用」之目的。 7〜、 緣是,為達成前述之目的,本發明提供一種快速去除垃圾焚 化飛灰有害物質之方法,至少包含下列步驟: 備取飛灰及清水:備取欲處理之垃圾焚化廠產出之匯合飛灰 及準備所需之清水; » 攪拌萃取:在清水與飛灰低液固比下,將清永加入飛灰中, 鲁 並進行攪拌萃取; 次潰萃取:浸潰高轉速萃取後之飛灰泥漿,使飛灰中物質繼 續自飛灰釋出; 固液分離:進行浸潰萃取後飛灰泥漿之固液分離; 供乾:固液分離後飛灰仍含有水分,故先行烘乾; 粉碎:飛灰烘乾易結塊,為利於後續再利用,故予以粉碎; 201212974 =檢測粉碎飛灰之TCLp重金屬溶出值及戴奥辛總量 ’右。’則粉碎飛灰即為無害物質,可作後續之再利用;若 未及格’職回備取触之步驟。 f實施方式j ^ 、 牛本务明較佳貫施例並配合圖示作詳細之說明如 後: 月多閱圖所不’本發明一較佳實施例之快速去除垃圾焚化 飛灰有害物質之方法,主要包含下列步驟·· 本發明之第-步驟係備取飛灰及清水湖··以垃圾焚化薇而 言,飛灰即是備取垃圾焚化廠空污防制設備收集之匯合飛灰,清 水可為自來水、蒸館水、或經軟水處理之水。 一本發明之第二步驟係攪拌萃取11〇 :將清水加入飛灰中,以 高轉速之授拌方式將飛灰與清水充分攪拌,並將飛灰破碎,進行 萃取。「液體重量:飛灰固體(乾重)比」為2_5 :卜攪拌轉速 為50(M,500rpm,時間為3_1〇min。此步驟主要係利用高轉速授 掉破碎飛灰,使飛灰中物質快速且大量釋出,可發揮快速質量傳 輸(mass t娜fer)之機制;另飛灰中驗金屬及驗土金屬氧化物與 水反應形成大量ΟΙΓ離子,由於低液固比,故0H_離子濃度高, 促使飛灰中大部分之Pb、Zn兩性金屬物種及部分之與 ΟΙΓ反應形成可溶性物種而移出至液相,而飛灰中原本濃度已低^ 其他重金屬物種,則㈣成氫氧化物之_物,此亦本發明擬利 用之化學反應(chemical reaction)機制。 201212974 本發明之第三步驟係浸潰 10-60 min , 飛灰之物_辆歧反應,;主魏使已破碎 之擴散(職_)、本她撕應較慢 ^狀細_撕細3():將崎料取後之飛灰 =以讀4空猶或離心等脫水方式,將歧與廢液分離。 /驟主要係分離飛翻體物與廢液,以利歧固體物作再利用 則之處理’另舰因含重金騎污雜,故須轉搞理設備進 行處理。 本發明之第五步驟雜乾⑽:以·2〇〇 χ之溫度加熱供 乾固液分離後之飛灰,以去除飛灰中之水分。 本發明之第六步驟係粉碎150:以習知破碎機將烘乾後之飛 灰私碎,粉碎後飛灰粒把應小於10mm。飛灰洪乾易、结塊,為利 於後續再利用,故予以粉碎。 本發明之最後步驟係檢測160 :檢測粉碎飛灰之TCLp溶出 籲值及戴奥辛總量值。若及格’則粉碎飛灰即為可再利用之無害物 質;若未及格,則重回備取飛灰及清水1〇〇之步驟。 此外,固液分離後之廢液,因含重金屬等污染物,故應進入 廢水處理設備進行處理。至於飛灰之戴奥辛因不易溶於水、酸 及鹼,故本發明係利用高速攪拌、破碎飛灰、固液分離等 程序,將飛灰中原已低於法規標準之微量戴奥辛,多少隨 廢水及極細小之膠體(colloid)移至廢水中,因此處理後 飛灰固體物之戴奥辛亦易低於法規標準。 201212974 、下係林發明技術處理某—大魏喊化廠之匯合飛 灰,結果如下: 法規值處理: L/S = 2; 1,200 rpm; 5 min 處理後 L/S = 5; 600 rpm; 10 minAccording to the current regulations in China, whether the waste incineration fly ash is harmful or not, the fly ash must be tested according to the criteria for the determination of the waste of the business: (1) the heavy metal of the toxicity characteristic dissolution procedure (t〇xic& and (2) wearing the characteristic leaching procedure, TCLP) Concentration of Oxygen total toxic equivalent concentration (referred to as the total amount of dioxin). The EPA has regularly tested the concentration of TCLP heavy metals and the amount of dioxin in the fly ash produced by domestic incineration plants over the years. The results of the eight tests are mostly Pb exceeding the TCLP regulations (5.0 mg/L), and some are Cd exceeding the TCLP regulations. (1. 〇mg / L) 'The remaining heavy metal dissolution values are lower than the standard. In addition, the total value of the dioxin in the production of fly ash from each incineration plant was lower than that in 201212974 (α12 ng _/g). It can be seen from the above that under the current regulations, waste incineration is a hazardous business waste due to heavy metals exceeding TCLP regulations. ― 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目 目The scale-only method can not only re-paste the fly ash, but also increase the waste volume, the cost of burying the francs, and increase the processing cost. What is more, the fly ash is not solidified or the landfill rainfall is delayed. The substance dissolves and pollutes the water and soil environment. Therefore, how to no longer solidify and bury the waste incineration fly ash, and instead use f to remove the harmful substances in the fly ash, so that the treated fly ash can reach the harmless standard of the regulations (including the TCLP heavy metal dissolution and the total amount of the dioxin). Gray is a major issue for reuse! I. In the case of incineration or high temperature treatment of fly ash or bottom slag (bottom ash orbottomresidue%_ surgery in the Republic of China invention or new patent case or public case as follows: 么月第301697遽 "The stability of the ash Reuse"; the invention of the first butterfly to make the gray injury into a method of inertia"; the invention of the similarity "ash smelting method and ash smelting furnace"; invention No. 5_ "reprocessing waste heat treatment furnace fine or "Methods and Equipment for Removal of Chloride Contained in Bottom Ash", No. 1278442; Method No. "Method for Removal of Heavy Metals from Waste Incineration-derived Fly Ash"; No. 1314543 "Adhesive Materials Made of Coal Ash" Method; No. 1328095 "Recycling treatment method for incinerator fly ash"; No. 1325795 "Method for stabilizing heavy metals and odour control in incinerators using bismuth diacetate powder"; Method and apparatus"; No. 128, "Incineration Bottom Washing Process 201212974 Preface", No. 1257330 "Processing and Apparatus for Incineration Fly Ash"; No. I256377 No. I256377 Silage Mixed Fly Ash Treatment Method "Products"; 帛1231234 "Processing agent and procedure for discharging dioxin-like compounds in incinerators"; Inventive Publication No. 52355 「 "Practicing method for recycling and recycling waste incineration fly ash by electric arc furnace"; Cong 123 'treatment method for harmless fly ash containing heavy metal”; Patent case and publication of the 9th “fly ash chelating agent mixing and adding equipment” in Hall No. 9. Further explanation of waste incineration similar to the present invention Fly ash processing technology. Two of the cases are the patented technology of the inventor of the case, which is the 13th method of “Abolition of the Abandoned Mianyan Line ash and heavy gold county”, and the financial law system has different contents for different places in the incineration plant. The original fly ash of heavy metal species and the reaction fly ash, the two fly ash are taken out and the mixture is mixed with the amount of (4) concentration _, the first step is to reduce the heavy metal concentration of the mixed fly ash, and then remove the 4-8 times water and 1G_24 hour extraction method. Fly ash ^ heavy metal. The second is the invention of the No. 2_3123 "treatment method for the harmless treatment of heavy metal incineration fly ash", the financial system is for the incineration plant to produce the confluent fly ash (that is, into the solidification The former confluence fly ash), first the first stage of clear water or weak test solution • (〇.001-〇.05 N of Na〇H) extraction, that is, in liquid-solid (dry weight) ratio 2_3 and 100_25〇_ After 4-12 hours of extraction, the fly ash is allowed to stand for 8-16 hours, and then the solid-liquid separation is carried out; after the extraction of the i-th stage, the second stage medium-concentration acid solution (0.5-2.0 ΜH2S04 or 〇 3) Extraction, liquid solid (wet 1 〇 '1 and 100-25 Gipm' for 4 _ 12 hours extraction to remove heavy metals from fly ash. In addition, No. 1328095 "Incinerator fly ash reuse treatment method", will fly The ash is stabilized-sub-tree-coated with jade, granulated and reinforced, mixed secondary resin packaging processing, molding processing and other steps, and reused as non-hazardous Hong Cheng ^ 201212974 5733 〇 5 tiger incineration The method and the dressing method of the fly ash are first to wash the fly ash water, and then the fly ash is kneaded and sent to the cement heating chamber. Known by the former Axis Society (10) incineration thieves, the 'recording technology system adopts the methods of ancient stagnation, gasification, high temperature and thriving, etc. The mechanism is as follows: by using immobilized $疋化乐 agent, the fly ash solid phase is harmful. The material is deuterated and not easily dissolved; by high temperature, the harmful substances in the crater are decomposed or converted into gas phase substances and removed; in addition to high temperature, the fly/solid phase harmful substances are decomposed or converted into gas phase materials, and the materials are transferred. The fly ash heat machine is melted and then (4) fly ash, so it is not easy to dissolve. In the case of the inventor of the present invention, the treatment of the fly ash is to be extracted, and the fly ash is removed from the solid phase and removed into the liquid phase. As for the contents and differences of the present invention and the inventors, The summary is as follows: (1) Case - Case No. 1311494: Different mixing methods are proposed for the original fly ash and reaction fly ash of the incineration plant; thereafter, the fly ash heavy metal is removed by 4-8 times water and the team hourly extraction method. (2) The second case (publication No. 2_3123): Domestic waste incineration is the convenience of coagulation treatment of fly ash. Therefore, after collecting fly ash from Weizhong air pollution control equipment, most of them are merged through the plant (10) ash conveying pipeline. The late person handles the device. This case is more in line with the complexity and novelty, so it is no longer directed at the original fly ash, reaction fly ash, but the confluence fly ash before entering the fly ash processing equipment is; the second phase (stained water or weak, medium concentration acid Liquid), just _25 () _ and 4] 2 hours of operating conditions, removal of fly ash heavy metals. (3) This application: In order to remove the harmful substances of fly ash (including heavy metals and Dai Osin) more quickly and effectively, the inventor of this case went into the deeper and found that the slaves found that it is more practical, and the technology of 201212974 is better. The object of this case is the confluent fly ash produced by the incineration plant; the water purification method with low liquid-solid ratio (2-5), high rotation speed (5〇(M, 5〇〇rpm), short time ((4) min) is verified. The method can quickly remove the disproportionate metal and reduce the total amount of dioxin, and achieve the standard of harmless fly ash after treatment. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for rapidly removing harmful substances from waste incineration fly ash, which is treated by garbage incineration. After the incineration, the combined fly ash (that is, the confluent fly ash before entering the curing treatment equipment) can quickly and effectively remove the harmful substances of the fly ash, and the harmless fly ash after the treatment can be used as a raw material for reuse. Hua, the purpose of "recycling resources". 7~, the reason is that, in order to achieve the foregoing purposes, the present invention provides a method for rapidly removing harmful substances from waste incineration fly ash, comprising at least the following steps : Prepare fly ash and clean water: Prepare the combined fly ash from the waste incineration plant to be treated and prepare the clean water; » Stirring extraction: Adding Qingyong to the fly ash under the low liquid-solid ratio of clean water and fly ash , and the stirring extraction is carried out; the secondary crushing extraction: impregnating the fly ash slurry after high-speed extraction, so that the material in the fly ash continues to be released from the fly ash; solid-liquid separation: solid-liquid separation of the fly ash slurry after the impregnation extraction ; for dry: after the solid-liquid separation, the fly ash still contains water, so it is dried first; pulverization: fly ash drying is easy to agglomerate, so it is easy to be reused, so it is crushed; 201212974 = detection of crushed fly ash TCLp heavy metal dissolution value And the total amount of Dioxin 'right.' The crushed fly ash is harmless substance, which can be reused for subsequent use; if it fails to pass the step of the job back. f Implementation mode j ^, Niu Benwu Ming better The following is a detailed description of the method for quickly removing waste hazardous materials from waste incineration fly ash according to a preferred embodiment of the present invention, which mainly includes the following steps: · The first step of the present invention Prepare fly ash and clear In the case of waste incineration, the fly ash is the confluence fly ash collected by the air pollution control equipment of the waste incineration plant. The clean water can be tap water, steaming water, or water treated with soft water. The second step is to stir and extract 11 〇: add fresh water to the fly ash, stir the fly ash and clean water with high-speed mixing method, and crush the fly ash for extraction. “Liquid weight: fly ash solid (dry weight) The ratio is 2_5: the stirring speed is 50 (M, 500 rpm, the time is 3_1 〇 min. This step is mainly to use the high speed to give off the broken fly ash, so that the material in the fly ash can be released quickly and in large quantities, which can exert rapid quality. The mechanism of transmission (mass t Nafer); the other metal in the fly ash and the soil metal oxide reacted with water to form a large amount of strontium ions. Due to the low liquid-solid ratio, the 0H_ ion concentration is high, which causes most of the fly ash. The Pb and Zn amphoteric metal species and parts react with hydrazine to form soluble species and are removed to the liquid phase, while the original concentration of fly ash is low. Other heavy metal species, (4) hydroxides, which are also intended to be utilized by the present invention. Chemical reaction (ch Emical reaction) mechanism. 201212974 The third step of the invention is that the impregnation is 10-60 min, the fly ash is _ vehicle reaction, the main Wei has broken the diffusion (job _), the tear of her should be slower ^ fine _ tearing 3 (): Take the fly ash after the raw material = remove the waste and separate the waste liquid by reading the 4 empty or centrifugal dehydration method. / The main reason is to separate the fly-up body and the waste liquid, so as to treat the solid matter for reuse. The other ship is contaminated with heavy gold, so it must be transferred to the equipment for treatment. The fifth step of the present invention is a dry (10): heating the fly ash after separation by dry solid-liquid separation at a temperature of 2 Torr to remove moisture in the fly ash. The sixth step of the present invention is pulverization 150: the fly ash after drying is smashed by a conventional crusher, and the fly ash granules should be less than 10 mm after pulverization. Fly ash is easy to dry and agglomerate, so it is smashed for subsequent reuse. The final step of the invention is the detection 160: detecting the TCLp dissolution threshold and the dioxin total value of the pulverized fly ash. If you pass the 'flying fly ash, it is a harmless substance that can be reused; if it fails, return to the step of preparing fly ash and clean water. In addition, the waste liquid after solid-liquid separation should be treated in wastewater treatment equipment because it contains heavy metals and other pollutants. As for the fly ash, Dioxin is not easily soluble in water, acid and alkali. Therefore, the present invention utilizes high-speed stirring, crushing fly ash, solid-liquid separation and the like, and the amount of dioxin in the fly ash which is lower than the regulatory standard, and how much with waste water and Very small colloids are moved into the wastewater, so the treatment of fly ash solids is also lower than the regulatory standards. 201212974, Xia Lin Lin invention technology to deal with a certain - Wei Wei shouting plant confluence fly ash, the results are as follows: Regulatory value processing: L / S = 2; 1,200 rpm; 5 min after treatment L / S = 5; 600 rpm; 10 Min

註:.一為未檢測 液因Μ ’本發明彻價廉之清水作鱗_,充分運用低 m轉稍健件,使較破碎以城《濃度服, 以理=雜種崎目移珊目,細_、成本低, 差依法提μ請之目的;緣是,本發明,符合㈣糊之要件, 【圖式簡單說明】 « 圖一係本發明一較佳實施例之流程圖。Note: One is the undetected liquid due to Μ 'The invention is cheap and clean water squad _, fully use the low m to turn a little health, so that the more broken city to the concentration of the service, the reason = hybrids and sorrows, The purpose of the present invention is to comply with the requirements of (4) paste, and the following is a flow chart of a preferred embodiment of the present invention.

【主要元件符號說明】 備取飛灰及清水100 攪拌萃取110 固液分離130 檢測160 烘乾140 浸潰萃取120 粉碎150 12[Main component symbol description] Prepare fly ash and clear water 100 Stirring extraction 110 Solid-liquid separation 130 Detection 160 Drying 140 Immersion extraction 120 Crushing 150 12

Claims (1)

201212974 七、申請專利範圍: 1.一種快速去除垃圾焚化飛灰有害物質之方法,至少包含以 下步驟: s 備取飛灰及清水:備取垃圾焚化廠產生之匯合飛灰及準備清 水作為萃取劑; ^ i攪拌萃取:將清水加人飛灰巾’ _拌方切歧與清水充 刀撥拌,並將飛灰破碎,進行萃取; φ 次潰萃取:靜置攪拌萃取後之飛灰泥漿,進行浸潰萃取; 固液分離:進行浸潰萃取後飛灰泥漿之脫水,將飛灰盈廢液 分離; ~ 丈共乾:將固液分離後之飛灰烘乾; 粉碎:將烘乾飛灰粉碎;及 檢H驗碎歧之TCLP溶綠域齡齡值,若及 ’則粉碎飛灰即為可再_之無害物f ;若未及格,則重回備 取飛灰及清水之步驟。 · 質之2耐請專_圍第1項所述快速去除城焚減灰有害物 廠办一’、中,備取飛灰及清水之步驟中,飛灰係指垃圾焚化 飛灰。_制叹備收集之匯合飛灰’即進入固化處理設備前匯合之 質之方申請專利範圍第1項所述快速去除垃圾焚化飛灰有害物 基 其中,備取飛灰及清水之步驟中,清水係指自來水、 軟水處理之水。 201212974 4.如申請專利範圍第 質之方法,JL巾,獅^ ㈣錢去較贼錢灰有害物 重)比个取之步驟中,「液體重量:飛灰固體(乾 置)比」為2-5 : 1,攪採鲮# * c , , ^ 、為 5〇〇~~1,50〇 rpm,時間為 3-10 min。 質之方去Γ專物&圍第1項所述快速去除垃圾焚化飛灰有害物 貝之方去,其中,浸潰萃 漿靜置l()〜6()min。 之㈣巾,係將㈣萃喊之飛灰泥 質之方味申肖專她^第1項所述快速去除垃圾焚化飛灰有害物 、、蓉心射’固液分離之步驟中’係以壓濾、真空過渡或離 4脫水方式,《灰與廢液分離。 曾 巾^專她圍^ 1項所述快速去除城焚化飛灰有害物 , 〃 + ’供乾之步驟中,係以100-200 0c之溫度加熱烘 乾固液分離後之飛灰。 ★ 專她圍第丨項所频速去除城焚減灰有害物 質之方法,其中,丄 、 杨早之v驟中,係以習知粉碎機將烘乾後之飛 灰粉碎’粉碎後飛灰粒徑小於1()麵。 . ^4利範目帛1項所述快速去除垃圾焚化飛灰有害物 質之方法,1^ 、/,〃、中,檢測之步驟中,檢測方法與及格判定值係依法 規之標準檢驗方法及其管制值。 14201212974 VII. Scope of application for patents: 1. A method for quickly removing harmful substances from waste incineration fly ash, including at least the following steps: s Preparing fly ash and clean water: Preparing the fly ash from the waste incineration plant and preparing clean water as extractant ^ i Stirring extraction: Add water to the person to fly the gray towel ' _ mix square cut and water with a knife to mix, and fly ash broken, for extraction; φ times of crushing extraction: static stirring after extraction of the fly ash mud, Performing impregnation extraction; solid-liquid separation: dewatering of fly ash slurry after impregnation extraction, separating fly ash surplus waste liquid; ~ zhang total dry: drying fly ash after solid-liquid separation; pulverization: drying will fly Ash pulverization; and inspection of the TCLP immersion green age age value, if and then 'the crushing fly ash is the _ the harmless substance f; if not, then return to the preparation of fly ash and water steps . · Quality 2 Responsibility _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 叹 备 收集 之 收集 ' ' ' ' ' ' ' ' ' ' ' ' ' ' 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 进入 ' 进入 进入 进入 进入 ' 进入 ' 进入 ' ' ' Clear water refers to water treated with tap water and soft water. 201212974 4. If the method of applying for the patent scope is the same, JL towel, lion ^ (four) money to the thief money ash harmful material weight) than the step taken, "liquid weight: fly ash solid (dry) ratio" is 2 -5 : 1, 鲮 鲮 * # * c , , ^ , is 5 〇〇 ~ ~ 1, 50 rpm, time is 3-10 min. The quality of the Γ Γ Γ & & & 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速 快速(4) towel, will be the (4) screaming of the flying gray muddy flavor Shen Shao specializes in her ^ the first item mentioned in the rapid removal of waste incineration fly ash harmful substances, Rong Xin shot 'solid-liquid separation step in the Department of pressure filtration , vacuum transition or 4 dehydration method, "ash and waste liquid separation. Zeng towel ^ specializes in her around the 1 item to quickly remove the incineration fly ash harmful substances in the city, 〃 + ‘drying step, is heated at 100-200 0c to dry the fly ash after solid-liquid separation. ★ Dedicated to the method of removing the harmful substances in the city by the speed of the 丨 丨 , , , , , , , , 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨 杨The particle size is less than 1 () surface. ^4 利范目帛1 The method for rapidly removing harmful substances from waste incineration fly ash, 1^, /, 〃, 中, in the detection step, the detection method and the passing judgment value are according to the standard test method of the regulations and Regulatory value. 14
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