ꗛ꓆띾뱯ꓴ덂뉺꡴닎 맪꣒꒶닐뙗뉠뱨썮껰蟜붮...
TRANSCRIPT
![Page 1: ꗛ꓆띾뱯ꓴ덂뉺꡴닎 맪꣒꒶닐뙗뉠뱨썮껰蟜붮 孆zebooks.lib.ntu.edu.tw/1_file/moeaidb/013019/H11003-02.pdfRichard Hsieh 띾뱯 덂뉺 닎 맪 닐뙗뉠뱨썮껰蟜붮](https://reader034.vdocuments.net/reader034/viewer/2022043005/5f8a14dfdc15a5366f0460a3/html5/thumbnails/1.jpg)
Richard Hsieh
石化業廢水處理系統
實例介紹超深層曝氣/厭氧處理
杜邦遠東石化股份有限公司
報告人:環保/技術發展謝銘勇經理
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Richard Hsieh
二廠製程區
一廠製程區
廢水二場行政區
停車場
廢水一場
預組場倉儲區停車場
北
大門
放流水
監測池
雨水截流池 製程區化學水溝收集池
排放至承受水體
廢水收集
![Page 3: ꗛ꓆띾뱯ꓴ덂뉺꡴닎 맪꣒꒶닐뙗뉠뱨썮껰蟜붮 孆zebooks.lib.ntu.edu.tw/1_file/moeaidb/013019/H11003-02.pdfRichard Hsieh 띾뱯 덂뉺 닎 맪 닐뙗뉠뱨썮껰蟜붮](https://reader034.vdocuments.net/reader034/viewer/2022043005/5f8a14dfdc15a5366f0460a3/html5/thumbnails/3.jpg)
Richard Hsieh
廢水排放
後處理
製程區廢水
放流水監測井
廢水緩衝池
調勻池溫度控制
厭氧生物反應器
營養劑調整
pH中和
進料批次槽
好氧生物反應器
固液分離沉澱系統
混凝沈澱砂過濾
空氣
污泥脫水
污泥乾燥廠外處理
前處理 生物處理一
生物處理二
污泥處理排放
收集
DeepShaft
廢水處理流程
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Richard Hsieh
超深層活性污泥法
• 超深層生物反應器– 所須面積依反應器深度大幅減少– 曝氣位置深-曝氣機壓力高-氧傳輸效率高– 生物好氧-反應溶氧-水深/壓力增加氧傳率– 水深/壓力增加‘氮氣’溶解污泥沈降性受影響– 一般設計為兩組反應器並聯操作
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Richard Hsieh
超深層活性污泥法
• 技術開發之經過– 傳統活性污泥法: 4-6m– 超深層活性污泥法: 50-150m– 研究階段:
• 1958年, 荷蘭Bruijn, Tuizaad公司, 16m深 U Type Bio-reactor.
• etc
– 實用階段:• 1974年, 英國ICI公司, 40m深 Deep Shaft.
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Richard Hsieh
超深層活性污泥法
• 國內現況:– 1990年, 觀音PTA廠, 135m深 Deep Shaft.– 設計處理水量: 3600m3, 處理PTA廢水.– 1996年, 觀音PTA廠, 55m深 Deep Shaft.– 其他.
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Richard Hsieh
超深層活性污泥法
• 處理方式及原理– 處理原理
• 於水深50-150m之槽型深井中, 以加壓曝氣方式進行活性污泥反應
• 反應器分為下降部及上升部, 且底部相通, 廢水於下降管向下流動, 於上升管向上流動
• 反應器之地面上有一水頭槽, 原廢水與進流水於此部份混合, 水中溶解性氣泡於此釋放
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Richard Hsieh
超深層活性污泥法
• 處理方式及原理– 水力循環
• 藉由下降管與上升管間空氣造成之密度差, 迫使反應器內液體產生穩定性循環(1-3m/sec)
• 下降管與上升管之注入點與空氣量為控制水流速度、反應迴流率及整個反應器操作之參數
• 起動反應器時需先於上升管加入空氣, 至建立初始循環速度後, 方可於下降管加入空氣
• 主要反應發生於下降管之距離內
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Richard Hsieh
超深層活性污泥法
• 處理方式及原理– 氧氣傳輸
• N=KLa(Co - C)– N 氧傳送量– KLa氧傳送係數 f(直徑, 接觸時間, 混合狀況)– Co 飽和溶氧 f(壓力)– C 反應器特定地點之溶氧濃度 f(反應速率, 濃度, 時間)
• 愈接近底部水壓愈高-氣泡小, 壓力高• 反應器深長應視為一種變壓力系統的柱塞式系統, 反應接觸時間長
• 流速高攪拌效率高– 設施組成
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Richard Hsieh
超深層活性污泥法
• 處理方式種類及特性– 種類
• 水力循環: 空氣循環式, 機械循環式• 反應器本體: 地下深井式, 高樓建築牆管式• 固液分離: 真空脫氣, 機械脫氣, 浮除, DAF, etc• 其他系統: 同一般廢水處理系統
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Richard Hsieh
超深層活性污泥法
• 處理方式種類及特性– 特性
• 節省用地地面積(10-20%)• 高負荷處理• 節省曝氣動力(25%)• 脫氮及防止膨化• 污泥產量少(30%)• 減少臭氣量、不受氣候變化影響
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Richard Hsieh
超深層活性污泥法
• 實廠操作管理– 設計處理條件
• COD: 3000-6000ppm, 12Te/Day• SS:<200ppm• p H:6-8• 水力負荷:100-180M3/H
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Richard Hsieh
處理效果 COD
40.043.046.049.052.055.058.061.064.067.070.073.0
Jan. 0
2Feb Mar AprMay Jun Jul Aug Sep
t
Oct
Nov Dec
Avg:61.81PPM
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Richard Hsieh
處理效果 SS
5.0
7.0
9.0
11.0
13.0
15.0
17.0
Jan. 0
2Feb Mar Apr May Jun Jul Aug Sep
t
Oct Nov Dec
Avg:12.03PPM
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Slide 1marketing/presentations/PRES-0148
DEEP SHAFT
ADVANCED BIOLOGICAL TREATMENT
TECHNOLOGY
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Slide 2marketing/presentations/PRES-0148
SOME DETAILS OF EXISTING DEEP SHAFT PLANT
• First Commercial Plant 1975
• 81 Commercial Plants in Operation– 39 Domestic/Industrial Sewage– 16 Food Effluents– 15 General Industrial Effluents (Chemical, Steel,
Textiles, PTA, Oil Refinery etc)– 8 Pulp and Paper Effluents– 3 Fermentation
• Flow Rate Range 38 m3 to 72,000 m3/day
• Feed BOD Range 60 to 7,400 ppm
• Shaft Diameter Range 0.7 to 7.0 m
• Shaft Depth Range 30 to 150 m
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Slide 3marketing/presentations/PRES-0148
DEEP SHAFT PLUS SEDIMENTATION CLARIFIER VACUUMDEGASSER
RECYCLED SLUDGE
AIRCOMPRESSOR
DEEPSHAFT
EFFLUENTINFLUENT
SEDIMENTATIONCLARIFIER
WASTESLUDGE
DEEP SHAFT PLUS FLOTATION CLARIFIERRECYCLED SLUDGE
DEEPSHAFT
AIRCOMPRESSOR
INFLUENT FLOTATIONCLARIFIER EFFLUENT
WASTE SLUDGE
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TM
Slide 4marketing/presentations/PRES-0148
ADVANTAGES OF THE DEEP SHAFT PROCESS
• Small footprint
• Higher Oxygen Transfer
• Low Power consumption
• No problems of sludge bulking
• Robust process copes well with shock loads
• Low environmental impact
• Low CAPEX and OPEX
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Slide 5marketing/presentations/PRES-0148
Deep Shaft Plant at Belasis, UK
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Slide 6marketing/presentations/PRES-0148
Tilbury Deep Shaft Plant, London Owned & Operated: Anglian Water PLC
Shaft: 5.7m Diameter x 60 m Deep
Total Plant Cost: £8 million (1987)
DESIGN ACTUAL
Flow (m3/day) 30,000 30,000
BOD In (mg/l) 600 1,000
BOD Out (mg/l) 60 45
BOD Load (kg/day) 18,000 30,000
Population Equivalent 320,000 530,000
F/M (/day) 1.1 2.0
MLSS (mg/l) 6,100 6,700
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Slide 7marketing/presentations/PRES-0148
PTA - T8 Deep Shaft at Wilton
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Slide 8marketing/presentations/PRES-0148
Deep Shaft Plant, Ohtsu, Japan Licensee: HPC
Design criteria
Feed: Cardboard
Effluent
Shaft Size: 100 m x 2.8mø
Flow: 20000 m3/d
BOD Load: 3200 kg/day
BOD In: 160 mg/l
BOD Out: 10 mg/l
Start-up: 1980NB: Plant enclosed in building. Shaft with white air injection pipe can be seen on bottom left hand side.
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Slide 9marketing/presentations/PRES-0148
Deep Shaft Plant, TokyoLicensee: MKK
Design criteria
Feed: Printing Effluent
Shaft Size: 75 m x 1.3 m ø
Flow: 2000 m3/d
BOD Load: 740kg/day
BOD In: 370 mg/l
BOD Out: 30 mg/l
Start-up: 1983
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Slide 10marketing/presentations/PRES-0148
Deep Shaft Plant, Shikoku, Japan
Licensee: MKK
Design criteria
Feed: Pulp and Waste
Paper
Shaft Size: 50m x 3.6m ø x
3 shafts
Flow: 45000 m3/d
BOD Load: 8460 kg/day
BOD In: 190 mg/l
BOD Out: 20 mg/l
Start-up: 1988
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Slide 11marketing/presentations/PRES-0148
Deep Shaft Plant, Taiwan
Licensee: DSTIDesign criteria
Feed: Terephthalic Acid
Effluent
Shaft Size: 130 m x 3.0 m ø x
2 shafts
Flow: 3720 m3/d
BOD Load: 10500 kg/day
BOD In: 2800mg/l
BOD Out: <50 mg/l
Start-up: 1991
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TM
Slide 12marketing/presentations/PRES-0148
Deep Shaft Plant, NiigataLicensee: Kajima
Design criteria
Feed: Fish Processing
Effluent
Shaft Size: 50m x 0.9 m ø
Flow: 200 m3/d
BOD Load: 300 kg/day
BOD In: 1500 mg/l
BOD Out: 300 mg/l
Start-up: 1983