UDA2182-DB1-NN2-NN-N-0E00EE變送器
UDA2182-DB1-NN2-NN-N-0E00EE變送器
UDA2182-DB1-NN2-NN-N-0E00EE變送器
8、城市污水處理出水的再生利用
在我國,花費大量投資建設了城市污水處理廠,但經過處理後的再生水並沒有得到充分利用,有的地區甚至還將處理後的再生水與未經處理的污水混入一起同流合污,有的地區沒有將再生水合理再用卻直接排入大海造成淡水資源的浪費。因此,在城市污水處理決策中應充分考慮污水的再生利用。城市污水處理廠出水可用作農業用水、市政雜用水、工業冷卻用水、工業生產用水、地下水補充等;另一方面,城市污水處理廠出水也可看作是水文循環的組成部分,將合乎質量要求的出水排放到河流水體中,使河流水體能維持或變成供下遊使用的原水源,不僅經濟可行,而且可減少風險並發揮河流自凈能力。
在我國的城市污水處理技術政策中,提倡各類規模的污水處理設施按照經濟合理和衛生的原則,實行污水再生利用。發展再生水在農業灌溉、綠地澆灌、城市雜用、生態恢復和工業冷卻等方面的利用。城市污水再生利用,應根據用戶需求和用途,合理確定用水的水量和水質。污水再生利用,可選用混凝、過濾、消毒或自然凈化等深度處理技術。因此,缺水城市和水環境污染嚴重的地區,在規劃建設遠距離調水之前應積極實施城市污水再生利用工程,同時做好非投資性或低投資性的節水減污工作。
城市污水再生利用規劃建設要依照客觀需要和實際可能的原則,按照遠期規劃確定終規模,以現狀水量及用水需求為主要依據確定實施規模。城市污水再生利用技術選擇與工程實施要考慮國情、實際條件和用戶需求,城市污水再生利用規模、處理程度、處理流程、輸水方式、再生水質、使用用途的選擇上,既要滿足要求,又要經濟合理。目前城市污水再生利用應著重於農業灌溉、市政雜用、景觀水體、生活雜用、工業冷卻、生態環境和補充地表水。
城市污水再生處理工藝應根據處理規模、水質特性、再生水用途及當地的實際情況和要求,經技術經濟比較後優選確定。工藝選擇的主要技術經濟指標包括:再生處理單位水量投資、再生處理單位水量電耗和成本、佔地面積、運行性能可靠性、管理維護難易程度、總體經濟與社會效益等。
城市污水再生利用的工程設計,應對再生水水源的現狀水質特性、污染物構成進行詳細調查或測定,做出合理的分析預測;應切合實際地並可靠地確定再生水水源水質和再生處理水質要求,採用不同的單元工藝組合,優化工藝設計參數。
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【主營產品】
1:Invensys Foxboro(福克斯波羅):I/A Series係統,FBM(現場輸入/輸出模塊)順序控制、梯形邏輯控制、事故追憶處理、數模轉換、輸入/輸出信號處理、數據通信及處理等。
2:Invensys Triconex: 冗餘容錯控制係統、基於三重模件冗餘(TMR)結構的現代化的容錯控制器。
3:Westinghouse(西屋): OVATION係統、WDPF係統、WEStation係統備件。
4:Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、
MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、
Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
5:Schneider Modicon(施耐德莫迪康):Quantum 140係列處理器、控制卡、電源模塊等。
6:ABB:工業機器人備件DSQC係列、Bailey INFI 90等。
7:Siemens(西門子):Siemens MOORE, Siemens Simatic C1,Siemens數控係統等。
8:Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等係列。
9:XYCOM:I/O 、VME板和處理器等。
10:GE FANUC(GE發那科):模塊、卡件、驅動器等各類備件。
11:Yaskawa(安川):伺服控制器、伺服馬達、伺服驅動器。
12:Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅動模塊等。
13:Woodward(伍德沃德):SPC閥位控制器、PEAK150數字控制器。
14:工業機器人係統備件。
ACCURAY 61552-002 MPR MODULE GOOD TAKEOUT
ACCURAY 61580-002 SPT MODULE GOOD TAKEOUT
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ACCURAY AD-8-066159-001 USPP AD8066159001
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ABB / ACCURAY 083898-010 ELECTROMETER RELAY 11PIN R600M OHM TC=12MS 58685
ABB/ACCURAY 083898-011 ELECTROMETER RELAY 11PIN R600M OHM TC=12MS E/C 58683
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ABB / ACCURAY 083898-011 ELECTROMETER RELAY 11PIN R600M OHM TC=12MS 58682
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