TWI409226B - A method for treatment of concentrated wastewater - Google Patents
A method for treatment of concentrated wastewater Download PDFInfo
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- TWI409226B TWI409226B TW100145490A TW100145490A TWI409226B TW I409226 B TWI409226 B TW I409226B TW 100145490 A TW100145490 A TW 100145490A TW 100145490 A TW100145490 A TW 100145490A TW I409226 B TWI409226 B TW I409226B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002351 wastewater Substances 0.000 title abstract description 9
- 239000010802 sludge Substances 0.000 claims abstract description 103
- 239000000203 mixture Substances 0.000 claims abstract description 34
- 150000003839 salts Chemical class 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims description 55
- 239000007788 liquid Substances 0.000 claims description 52
- 239000002253 acid Substances 0.000 claims description 4
- 150000001299 aldehydes Chemical class 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 4
- 159000000007 calcium salts Chemical class 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 159000000003 magnesium salts Chemical class 0.000 claims description 4
- 150000002989 phenols Chemical class 0.000 claims description 4
- 159000000000 sodium salts Chemical class 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 230000000813 microbial effect Effects 0.000 claims description 2
- 102000004169 proteins and genes Human genes 0.000 claims description 2
- 108090000623 proteins and genes Proteins 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims 2
- 239000004615 ingredient Substances 0.000 claims 2
- 150000002505 iron Chemical class 0.000 claims 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000001035 drying Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000010812 mixed waste Substances 0.000 description 1
- -1 petrochemical Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Treatment Of Sludge (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Description
本發明係有關於一種處理高鹽度濃縮廢液的方法，特別是有關於一種利用污泥餅摻混處理高鹽度濃縮廢液的方法。The present invention relates to a method for treating a high salinity concentrated waste liquid, and more particularly to a method for treating a high salinity concentrated waste liquid by using a sludge cake blending treatment.
隨著氣候急速變遷及人口快速成長，水資源分配的問題已逐漸浮上檯面。因此，如何有效地回收廢水再利用，特別是有效地回收光電、半導體、石化、及鋼鐵業所產生的大量廢水，已成為一項重要的研究課題。With the rapid changes in climate and rapid population growth, the issue of water resources allocation has gradually surfaced. Therefore, how to effectively recycle wastewater and reuse it, especially to effectively recover large amounts of wastewater generated by photovoltaic, semiconductor, petrochemical, and steel industries, has become an important research topic.
工業廢水在經過多段回收處理與濃縮程序後，會產生高鹽度的濃縮廢液。傳統上常採用蒸發濃縮的技術，以達到減容的目的。然而，蒸發濃縮的過程，不但需要耗費相當多的能源，同時也需要額外的空間設置相關設備，不利於簡化製程與節省成本。Industrial wastewater will produce high salinity concentrated waste liquid after multiple stages of recovery and concentration procedures. Traditionally, evaporation and concentration techniques have been used to achieve volume reduction. However, the process of evaporation and concentration not only requires a considerable amount of energy, but also requires additional space for setting up related equipment, which is not conducive to simplifying the process and saving costs.
另一方面，在傳統的廢水處理及回收程序中，多數的技術會產生污泥。一般常採用污泥脫水機搭配污泥乾燥機，以降低污泥的含水率，或直接採用污泥脫水乾燥機進行乾燥處理，去除污泥中大部分的水分，形成乾燥污泥，再進行最終處置。On the other hand, in the traditional wastewater treatment and recovery process, most technologies produce sludge. Generally, a sludge dewatering machine is used together with a sludge dryer to reduce the moisture content of the sludge, or directly dried by a sludge dewatering dryer to remove most of the moisture in the sludge to form a dry sludge, and then finally Dispose of.
在現有的廢水處理方法中，常會同時產生液態的高鹽度濃縮廢液，與固態的乾燥污泥廢棄物，再分別利用蒸發濃縮及掩埋的方式處理液態的濃縮廢液與固態的乾燥污泥廢棄物。如此，不但需要耗費許多處理時間，同時也增加了高鹽度濃縮廢液的處理成本。In the existing wastewater treatment method, liquid high-salt concentration concentrated waste liquid is often produced at the same time, and solid dry sludge waste is used to treat liquid concentrated waste liquid and solid dry sludge by evaporation concentration and burying, respectively. Waste. In this way, not only does it take a lot of processing time, but it also increases the processing cost of the high salinity concentrated waste liquid.
因此，仍需要一種簡便且節省成本，能同時處理液態的高鹽度濃縮廢液與固態的乾燥污泥廢棄物之方法。Therefore, there is still a need for a simple and cost effective method for simultaneously processing liquid high salinity concentrated waste liquid and solid dry sludge waste.
本發明提供一種處理高鹽度濃縮廢液之方法，包括摻混污泥餅與待處理之高鹽度濃縮廢液，以形成含鹽之污泥混合物；以及脫除該含鹽之污泥混合物之水分，而形成乾燥污泥。The present invention provides a method for treating a high salinity concentrated waste liquid, comprising blending a sludge cake with a high salinity concentrated waste liquid to be treated to form a salt-containing sludge mixture; and removing the salt-containing sludge mixture The moisture forms a dry sludge.
本發明之方法係利用經脫水之污泥餅摻混高鹽度濃縮廢液，再加熱蒸發水分形成乾燥污泥，使濃縮廢液中的鹽分積存於乾燥污泥中。相較於利用蒸發濃縮裝置降低濃縮廢液鹽分之方法，本發明之方法係利用脫水污泥餅摻混處理高鹽度濃縮廢液，不但可以節省設備建置的空間，同時能夠減少處理程序與成本。The method of the invention utilizes the dehydrated sludge cake to mix the high salinity concentrated waste liquid, and then heats and evaporates the water to form a dry sludge, so that the salt in the concentrated waste liquid is accumulated in the dry sludge. Compared with the method for reducing the salinity of the concentrated waste liquid by using the evaporation concentration device, the method of the invention utilizes the dewatered sludge cake to mix and treat the high salinity concentrated waste liquid, which not only saves the space for equipment construction, but also reduces the processing procedure and cost.
以下藉由特定具體實例詳細說明本發明之實施方式，熟習此技藝之人士可藉由本發明說明書所揭示之內容輕易地瞭解本發明之優點及功效，但並非將本發明之範疇侷限於此。In the following, the embodiments of the present invention will be described in detail by way of specific examples, and those skilled in the art can readily understand the advantages and functions of the present invention without departing from the scope of the invention.
本發明處理高鹽度濃縮廢液之方法，係先使污泥餅與待處理之高鹽度濃縮廢液摻混形成含鹽之污泥混合物，再使該含鹽之污泥混合物脫除水分形成含鹽之乾燥污泥，以達到處理高鹽度濃縮廢液之目的。本發明之方法中，該待處理之高鹽度濃縮廢液係指導電度係介於10至200 mS/cm範圍之濃縮廢液，較佳係指導電度係介於30至180 mS/cm範圍之濃縮廢液，更佳係指導電度係介於50至160 mS/cm範圍之濃縮廢液。該高鹽度濃縮廢液的實例包括，但非限於有機濃縮廢液、無機濃縮廢液、或其混合物；其中，該有機濃縮廢液中的有機成分可包括烴、醇、酮、醛、酸、酯、及酚類化合物之一或多者；該無機濃縮廢液中的無機成分可包括鈣鹽、鈉鹽、鎂鹽、鋁鹽及銨鹽之一或多者。The method for treating a high salinity concentrated waste liquid is characterized in that a sludge cake is mixed with a high salinity concentrated waste liquid to be treated to form a salty sludge mixture, and then the salty sludge mixture is dehydrated. The salt-containing dry sludge is formed to achieve the purpose of treating the high salinity concentrated waste liquid. In the method of the present invention, the high salinity concentrated waste liquid to be treated is a concentrated waste liquid with a conductivity system ranging from 10 to 200 mS/cm, and preferably the guiding electric energy system is between 30 and 180 mS/cm. A concentrated waste liquid of a range, preferably a concentrated waste liquid having a conductivity range of 50 to 160 mS/cm. Examples of the high salinity concentrated waste liquid include, but are not limited to, an organic concentrated waste liquid, an inorganic concentrated waste liquid, or a mixture thereof; wherein the organic component in the organic concentrated waste liquid may include a hydrocarbon, an alcohol, a ketone, an aldehyde, and an acid. One or more of an ester, and a phenolic compound; the inorganic component in the inorganic concentrated waste liquid may include one or more of a calcium salt, a sodium salt, a magnesium salt, an aluminum salt, and an ammonium salt.
請參閱第1圖所示之處理高鹽度濃縮廢液之流程圖，本發明之方法係先使用經脫水後之污泥餅12與待處理之高鹽度濃縮廢液13進行摻混，形成含鹽之污泥混合物14。於該具體實例中，該污泥餅的取得係可使用廢水處理廠中，含水率95至99重量%之污泥10，經污泥脫水機11脫水後形成污泥餅12。一般而言，該污泥餅的含水率係介於50至90重量%之範圍，較佳係介於55至80重量%之範圍，更佳係介於60至70重量%之範圍。污泥餅的實例包括，但非限於有機污泥餅、無機污泥餅、或其混合物；其中，該有機污泥餅中的有機成分可包括選自微生物細胞、蛋白質、烴、醇、酮、醛、酸、酯、及酚類化合物之一或多者經廢水處理後所產生之廢棄生物污泥；該無機污泥餅中的無機成分可包括鈣鹽、鈉鹽、鎂鹽、鋁鹽及鐵鹽之一或多者經廢水處理後產生廢棄化學污泥。Referring to the flow chart of the high salinity concentrated waste liquid shown in FIG. 1 , the method of the present invention firstly mixes the dehydrated sludge cake 12 with the high salinity concentrated waste liquid 13 to be treated to form a mixture. Salt-containing sludge mixture 14. In this specific example, the sludge cake can be obtained by using a sludge 10 having a water content of 95 to 99% by weight in a wastewater treatment plant, and dewatering by the sludge dewatering machine 11 to form a sludge cake 12. In general, the moisture content of the sludge cake is in the range of 50 to 90% by weight, preferably in the range of 55 to 80% by weight, more preferably in the range of 60 to 70% by weight. Examples of the sludge cake include, but are not limited to, an organic sludge cake, an inorganic sludge cake, or a mixture thereof; wherein the organic component in the organic sludge cake may include a microorganism selected from the group consisting of microbial cells, proteins, hydrocarbons, alcohols, ketones, a waste biological sludge produced by treating one or more of an aldehyde, an acid, an ester, and a phenolic compound by a wastewater; the inorganic component in the inorganic sludge cake may include a calcium salt, a sodium salt, a magnesium salt, an aluminum salt, and One or more of the iron salts are treated with waste water to produce waste chemical sludge.
本發明之方法中，該污泥餅與該待處理之高鹽度濃縮廢液可根據所使用之污泥餅成分或含水量等因素，以適當的比例進行摻混。通常，該污泥餅與該待處理之高鹽度濃縮廢液係以重量比10：6至10：3之比例摻混形成含鹽之污泥混合物，較佳係以重量比10：4至10：3之比例摻混形成含鹽之污泥混合物。若污泥混合物含水率過高，造成乾燥時脫除水分困難。該污泥餅與該待處理之高鹽度濃縮廢液摻混所形成之含鹽污泥混合物的含水率係介於89至92重量%之範圍，較佳係介於90至91重量%之範圍，又更佳係介於89至90重量%之範圍。In the method of the present invention, the sludge cake and the high salinity concentrated waste liquid to be treated may be blended in an appropriate ratio according to factors such as the sludge cake component or water content used. Usually, the sludge cake and the high salinity concentrated waste liquid to be treated are blended at a weight ratio of 10:6 to 10:3 to form a salt-containing sludge mixture, preferably in a weight ratio of 10:4 to A 10:3 ratio is blended to form a salt-containing sludge mixture. If the moisture content of the sludge mixture is too high, it is difficult to remove moisture during drying. The moisture content of the salt sludge mixture formed by blending the sludge cake with the high salinity concentrated waste liquid to be treated is in the range of 89 to 92% by weight, preferably 90 to 91% by weight. The range, and more preferably, is in the range of 89 to 90% by weight.
復參閱第1圖所示，本發明之方法中，污泥餅12與該待處理之高鹽度濃縮廢液13摻混形成具有含鹽之污泥混合物14後，可利用污泥乾燥機15，自該含鹽之污泥混合物中脫除水分，使濃縮廢液中的鹽分積存於乾燥污泥16中，藉以達到同時處理該高鹽度濃縮廢液及污泥乾燥減容之目的。於一具體實例中，該含鹽之污泥混合物係藉由加熱乾燥的方式脫除水分，以形成乾燥污泥。一般而言，該加熱係於100至250℃之溫度條件下進行，較佳係於150至250℃之溫度條件下進行，更佳係於200至250℃之溫度條件下進行，可脫除污泥混合物之水分，以獲得乾燥污泥。通常，本發明方法所形成之乾燥污泥的含水率係低於40重量%，較佳係低於30重量%，又更佳係低於20重量%。Referring to Fig. 1, in the method of the present invention, after the sludge cake 12 is mixed with the high salinity concentrated waste liquid 13 to be treated to form a sludge mixture 14 having a salt, the sludge dryer 15 can be utilized. The water is removed from the salty sludge mixture, and the salt in the concentrated waste liquid is accumulated in the dry sludge 16 to achieve the purpose of simultaneously treating the high salinity concentrated waste liquid and drying and reducing the volume of the sludge. In one embodiment, the salt-containing sludge mixture is dewatered by heat drying to form a dry sludge. In general, the heating is carried out at a temperature of from 100 to 250 ° C, preferably at a temperature of from 150 to 250 ° C, more preferably at a temperature of from 200 to 250 ° C, for decontamination. The moisture of the mud mixture to obtain dry sludge. Generally, the dry sludge formed by the process of the present invention has a moisture content of less than 40% by weight, preferably less than 30% by weight, and more preferably less than 20% by weight.
實際取得光電廠經污泥脫水機脫水後的污泥餅(有機污泥，含水率：87重量%)，及光電廠高鹽度的濃縮廢液(有機與無機混合廢液，導電度：38 mS/cm)，將污泥餅摻混高鹽度的濃縮廢液，分別調配至理論含水率為90重量%及91重量%，使用高效能兩段式污泥乾燥機(Hyper X 0500)，對摻混後的污泥進行乾燥，測試條件與測試結果如下：Actually obtained the sludge cake (organic sludge, water content: 87% by weight) dehydrated by the sludge dewatering machine of the photovoltaic power plant, and the concentrated waste liquid of high salinity of the photovoltaic power plant (organic and inorganic mixed waste liquid, conductivity: 38 mS/cm), the sludge cake is blended with a high salinity concentrated waste liquid, and the theoretical water content is 90% by weight and 91% by weight respectively, and a high-performance two-stage sludge dryer (Hyper X 0500) is used. The mixed sludge was dried. The test conditions and test results are as follows:
(1)調配含水率至90重量%之污泥混合物：摻混經脫水後污泥10 kg及濃縮廢液3 kg，合計樣品量13 kg，操作溫度：230℃，污泥混合物進料的濾帶速度90 cm/min。(1) Mixing sludge mixture with water content to 90% by weight: blending 10 kg of dewatered sludge and 3 kg of concentrated waste liquid, total sample volume 13 kg, operating temperature: 230 ° C, filtration of sludge mixture feed Belt speed 90 cm/min.
(2)調配含水率至91重量%之污泥混合物：摻混經脫水後污泥10 kg及濃縮廢液4.5 kg，合計樣品量14.5 kg，操作溫度：230℃，污泥混合物進料的濾帶速度90 cm/min。(2) Mixing sludge mixture with water content to 91% by weight: blending 10 kg of dewatered sludge and 4.5 kg of concentrated waste liquid, total sample amount is 14.5 kg, operating temperature: 230 ° C, filtration of sludge mixture feed Belt speed 90 cm/min.
本實施例先將污泥餅與待處理之高鹽度濃縮廢液摻混形成含鹽之污泥混合物，形成之含鹽污泥混合物的含水率分別為90及91重量%。經過第一段加熱乾燥後，含水率介於50至60重量%之範圍，經過第二段加熱乾燥後，含水率介於1.5至2.5重量%之範圍，水分去除率可達97重量%以上。除可有效脫除含鹽污泥混合物的水分形成乾燥污泥外，同時可使高鹽度濃縮廢液中的鹽分積存於乾燥污泥中，再進行最終處置。In this embodiment, the sludge cake is first mixed with the high salinity concentrated waste liquid to be treated to form a salty sludge mixture, and the salty sludge mixture is formed to have a water content of 90 and 91% by weight, respectively. After the first stage of heating and drying, the water content is in the range of 50 to 60% by weight. After the second stage of heating and drying, the water content is in the range of 1.5 to 2.5% by weight, and the moisture removal rate is more than 97% by weight. In addition to effectively removing the moisture of the salty sludge mixture to form a dry sludge, the salt in the high salinity concentrated waste liquid can be stored in the dry sludge for final disposal.
10．．．污泥10. . . sludge
11．．．污泥脫水機11. . . Sludge dewatering machine
12．．．污泥餅12. . . Sludge cake
13．．．濃縮廢液13. . . Concentrated waste
14．．．污泥混合物14. . . Sludge mixture
15．．．污泥乾燥機15. . . Sludge dryer
16．．．乾燥污泥16. . . Dry sludge
第1圖係顯示本發明處理高鹽度濃縮廢液之流程圖。Figure 1 is a flow chart showing the treatment of a high salinity concentrated waste liquid of the present invention.
10．．．污泥10. . . sludge
11．．．污泥脫水機11. . . Sludge dewatering machine
12．．．污泥餅12. . . Sludge cake
13．．．濃縮廢液13. . . Concentrated waste
14．．．污泥混合物14. . . Sludge mixture
15．．．污泥乾燥機15. . . Sludge dryer
16．．．乾燥污泥16. . . Dry sludge
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| TW100145490A TWI409226B (en) | 2011-12-09 | 2011-12-09 | A method for treatment of concentrated wastewater |
| CN201110432418.6A CN103159274B (en) | 2011-12-09 | 2011-12-21 | Method for treating high-salinity concentrated waste liquid |
| SG2012051090A SG191457A1 (en) | 2011-12-09 | 2012-07-11 | Method for treating concentrated waste liquid |
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| TW100145490A TWI409226B (en) | 2011-12-09 | 2011-12-09 | A method for treatment of concentrated wastewater |
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| TWI409226B true TWI409226B (en) | 2013-09-21 |
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| TW200502180A (en) * | 2003-04-04 | 2005-01-16 | Orica Australia Pty Ltd | Process for treating concentrated salt solutions containing doc |
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| JPS5579100A (en) * | 1978-12-08 | 1980-06-14 | Osaka Gas Co Ltd | Treating method for sludge |
| TW203594B (en) * | 1992-08-25 | 1993-04-11 | Ind Tech Res Inst | A solidification method of the high salt content slurry |
| CN201003900Y (en) * | 2006-10-09 | 2008-01-09 | 米洁 | Mud material drying system |
| CN100557312C (en) * | 2006-12-25 | 2009-11-04 | 上海环保工程成套有限公司 | A sludge drying and incineration integrated treatment method and device |
| CN102361829B (en) * | 2009-03-30 | 2013-07-24 | 栗田工业株式会社 | Method for dewatering sludge and method and device for electroosmotic dewatering |
| US20110084029A1 (en) * | 2009-10-08 | 2011-04-14 | Dominick O' Reilly | Waste treatment system |
| CN102140003A (en) * | 2010-02-03 | 2011-08-03 | 北京中矿环保科技股份有限公司 | Sludge drying method, incineration method, sludge incineration device, thermal power plant and system |
| CN101823826A (en) * | 2010-04-20 | 2010-09-08 | 上海大学 | Method for adjusting and treating municipal residual sludge by using salinferous brine or seawater |
| CN102153267A (en) * | 2011-04-15 | 2011-08-17 | 复旦大学 | Method for modifying and dewatering sludge |
-
2011
- 2011-12-09 TW TW100145490A patent/TWI409226B/en active
- 2011-12-21 CN CN201110432418.6A patent/CN103159274B/en active Active
-
2012
- 2012-07-11 SG SG2012051090A patent/SG191457A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200502180A (en) * | 2003-04-04 | 2005-01-16 | Orica Australia Pty Ltd | Process for treating concentrated salt solutions containing doc |
Also Published As
| Publication number | Publication date |
|---|---|
| SG191457A1 (en) | 2013-07-31 |
| TW201323347A (en) | 2013-06-16 |
| CN103159274A (en) | 2013-06-19 |
| CN103159274B (en) | 2015-04-01 |
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