Dry Air Technology Promoted for Sludge Dewateringair2015
「Dry Air Technology Promoted for Sludge Dewateringair2015」於資料集「MajorEnvironmentalPolicies」由單位「行政院環境保護署」的陳小姐所提供，聯繫電話是(02)23117722#2753,(02)23117722#2756，最近更新時間為：2023-07-30 01:03:45。 欄位編號的內容是3374 ， 欄位標題的內容是Dry Air Technology Promoted for Sludge Dewatering ， 欄位摘要的內容是Air Dry Air Technology Promoted for Sludge Dewatering
The EPA has vigorously promoted using dry air to dewater sludge and reduce its volume by 50%. This will not only save energy but also reduce air pollution. The sludge treatment market is expected to undergo major changes due to this new technology. ， 欄位全文的內容是Dry Air Technology Promoted for Sludge Dewatering
The EPA has vigorously promoted using dry air to dewater sludge and reduce its volume by 50%. This will not only save energy but also reduce air pollution. The sludge treatment market is expected to undergo major changes due to this new technology.
Taiwan produces 2.4 million tons of sludge every year. Although treatment facilities and reuse organizations have adequate capacity to deal with such an amount, these facilities and organizations are often ordered to shut down for not complying with regulations due to technological issues. This results in the market becoming unstable and an increase in treatment prices. Previously, it cost only NT$2000-3000 to treat one ton of sludge, but the price has risen to NT$7000-8000 per ton. At present, sludge is treated primarily by using a high temperature rotary kiln which has high energy-consumption and other drawbacks.
To improve this situation, the EPA has vigorously promoted the introduction of utilizing dry air as a dehydration method. By so doing, the ratio of water in sludge can be reduced from 80% down to 60%, and sludge weight can be reduced to half. Furthermore, through source dewatering, energy can be saved and pollution can be reduced. The dry air method seems to be a worthy way by which sludge can be treated in the future.
The major ingredients of sludge are water, organic materials and inorganic materials. Water comprises about 80% of sludge. Currently, sludge is treated by putting it in a rotary kiln incinerator, which is then heated to 600-900℃ to remove the water and burn the organic materials. The organic materials are then sintered with the inorganic materials to make artificial bone materials which can be used as reclaimed aggregate material. However, to treat the three major ingredients at the same time is technologically challenging, while the steam will carry away the bulk of the energy, rendering it unavailable for use.
The Douliu Wastewater Treatment Plant may serve as an example. After the operator imported the sludge dewatering equipment, the amount of sludge was reduced from 549 tons per month as of August 2014, to 123 tons per month as of August 2015 – a reduction of 78%. This has resulted in a great reduction of sludge treatment fees as well as the reduction of tail- end treatment.
Solar Technology Inc. in the Tainan Environmental Science and Technology Park is another good example. The company imported sludge dewatering equipment from Japan in early 2015. After the equipment was put to use, the monthly sludge output was reduced from 40 tons in the past, to 20 tons as of now. Ninety-five percent of the dewatered sludge is now sent to Germany for further refinement.
Yet another good example is the World Resources Company (WRC) Pacific Ltd. In Kaohsiung Environmental Science and Technology Park. The company uses fluidized bed technology to treat the electroplating sludge and heavy metal sludge. It can treat four to five tons of sludge every hour, with a recess time of only one to two minutes. The metal-enriched output from the fluidized bed drying process is then exported to other countries for further treatment. ， 欄位年度的內容是2015 ， 欄位月份的內容是12 ， 欄位卷的內容是18 ， 欄位期的內容是12 ， 欄位順序的內容是 ， 欄位倒序的內容是 ， 欄位分類的內容是air ， 欄位標題2的內容是 ， 欄位檔案位置的內容是V18/V18-12 。
編號
3374
標題
Dry Air Technology Promoted for Sludge Dewatering
摘要
Air Dry Air Technology Promoted for Sludge Dewatering The EPA has vigorously promoted using dry air to dewater sludge and reduce its volume by 50%. This will not only save energy but also reduce air pollution. The sludge treatment market is expected to undergo major changes due to this new technology.
全文
Dry Air Technology Promoted for Sludge Dewatering The EPA has vigorously promoted using dry air to dewater sludge and reduce its volume by 50%. This will not only save energy but also reduce air pollution. The sludge treatment market is expected to undergo major changes due to this new technology. Taiwan produces 2.4 million tons of sludge every year. Although treatment facilities and reuse organizations have adequate capacity to deal with such an amount, these facilities and organizations are often ordered to shut down for not complying with regulations due to technological issues. This results in the market becoming unstable and an increase in treatment prices. Previously, it cost only NT$2000-3000 to treat one ton of sludge, but the price has risen to NT$7000-8000 per ton. At present, sludge is treated primarily by using a high temperature rotary kiln which has high energy-consumption and other drawbacks. To improve this situation, the EPA has vigorously promoted the introduction of utilizing dry air as a dehydration method. By so doing, the ratio of water in sludge can be reduced from 80% down to 60%, and sludge weight can be reduced to half. Furthermore, through source dewatering, energy can be saved and pollution can be reduced. The dry air method seems to be a worthy way by which sludge can be treated in the future. The major ingredients of sludge are water, organic materials and inorganic materials. Water comprises about 80% of sludge. Currently, sludge is treated by putting it in a rotary kiln incinerator, which is then heated to 600-900℃ to remove the water and burn the organic materials. The organic materials are then sintered with the inorganic materials to make artificial bone materials which can be used as reclaimed aggregate material. However, to treat the three major ingredients at the same time is technologically challenging, while the steam will carry away the bulk of the energy, rendering it unavailable for use. The Douliu Wastewater Treatment Plant may serve as an example. After the operator imported the sludge dewatering equipment, the amount of sludge was reduced from 549 tons per month as of August 2014, to 123 tons per month as of August 2015 – a reduction of 78%. This has resulted in a great reduction of sludge treatment fees as well as the reduction of tail- end treatment. Solar Technology Inc. in the Tainan Environmental Science and Technology Park is another good example. The company imported sludge dewatering equipment from Japan in early 2015. After the equipment was put to use, the monthly sludge output was reduced from 40 tons in the past, to 20 tons as of now. Ninety-five percent of the dewatered sludge is now sent to Germany for further refinement. Yet another good example is the World Resources Company (WRC) Pacific Ltd. In Kaohsiung Environmental Science and Technology Park. The company uses fluidized bed technology to treat the electroplating sludge and heavy metal sludge. It can treat four to five tons of sludge every hour, with a recess time of only one to two minutes. The metal-enriched output from the fluidized bed drying process is then exported to other countries for further treatment.
年度
2015
月份
12
卷
18
期
12
順序
倒序
分類
air
標題2
檔案位置
V18/V18-12
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