應用實績 : Hach EZ系列水中磷濃度監測儀協助美國麻州一污水處理場精確即時控管污水處理廠流程並達成磷排放標準
Hach’s On-line EZ Series Phosphorus Analyzer allows piece of mind and prevents permit violations
The Marlborough Westerly Wastewater Treatment Plant is an advanced wastewater treatment facility designed to handle a daily average flow of 2.89 million gallons per day. The facility treats sewage from the westerly portion of Marlborough (west of Route 495) and the Town of Northborough under an inter-municipal agreement.
The facility operates under a National Pollution Discharge Elimination System (NPDES) permit issued by the EPA and Massachusetts DEP. Scott Mello is the Chief Operator. The plant is one shift operation and does not have staff at the facility overnight.
The facility operates under a National Pollution Discharge Elimination System (NPDES) permit issued by the EPA and Massachusetts DEP. Scott Mello is the Chief Operator. The plant is one shift operation and does not have staff at the facility overnight.
美國麻薩諸塞州Marlborough城市的西區污水處理廠為一座先進的污水處理設施，根據設計規畫的每日均處理量為289萬加侖。此污水處理廠按照市府間的協議處理Marlborough市西部和北伯勒鎮的污水。
此污水處理廠根據美國環保署和麻州環保局頒發的國家污染物排放消除系統（NPDES）許可證標準運作。此污水處理廠採一班制運作，夜間無人值守。
NPDES Total Phosphorus Permit Summary 國家污水排放消除系統的總磷濃度排放許可規範 :
- Summer monthly average 夏季月平均值 : 0.1 mg/l
- Daily maximum 每日最大值 : 0.2 mg/l
- Monthly average/Daily maximum Winter (Nov-March) 冬季（11月至3月）月平均值/日最大值 : 1 mg/L
- Regionally we are seeing stricter permits with neighboring plants preparing to meet their summer TP levels all year. 在同區域內，我們看到更加嚴格的排放規定標準 - 鄰近污水處理廠正準備全年都達到夏季總磷排放水的規定標準濃度
Challenges 挑戰
2022 was a challenging year for the plant. They had four permit violations.
Marlborough has a lot of industry, the plant has been known to get “super hits” of discharges that can negatively affect plant. He’ll start to see foaming in primaries and assumes someone is doing a cleaning process.
2022年對此污水處理廠是充滿挑戰的一年。他們收到了四次(超標)違規通知。
2022 was a challenging year for the plant. They had four permit violations.
Marlborough has a lot of industry, the plant has been known to get “super hits” of discharges that can negatively affect plant. He’ll start to see foaming in primaries and assumes someone is doing a cleaning process.
2022年對此污水處理廠是充滿挑戰的一年。他們收到了四次(超標)違規通知。
Marlborough 城市的工業發達，此污水處理廠經常會承受「超級大」的排放水量，因而會對污水處理廠造成負面影響。從在初級處理池中發現泡沫，進而推測有人正在進行清洗作業。
Hach ‘s EZ Series Phosphorus on-line analyzer gives him red flag that something is coming through the plant. He’ll see phosphorus spike up to 1-2 mg/L, this allows him to investigate and flow pace dose ferric chloride into the raw influent stream. Chemical dosing is approximately 2 gallons/hour.
Hach EZ系列水中磷監測儀會發出警示，顯示廠區水有異狀。管理人員可以發現磷濃度飆升至1-2毫克/公升，進而進行調查，並在原水中緩慢添加氯化鐵。化學藥劑的添加量約為每小時2加侖。
Hach EZ系列水中磷監測儀會發出警示，顯示廠區水有異狀。管理人員可以發現磷濃度飆升至1-2毫克/公升，進而進行調查，並在原水中緩慢添加氯化鐵。化學藥劑的添加量約為每小時2加侖。
A spike of 0.25 mg/L Total Phosphorus occurred in February 2024. Without the EZ Series Phosphorus analyzer, he never would have caught it, he would have had no clue until a laboratory sample was analyzed. The EZ Series gives him more time to counter act the incoming phosphorus spike. The analyzer takes a sample every hour pre and post his sand filters and analyzes for both total phosphorus and orthophosphate.
2024年2月，總磷濃度出現了0.25毫克/公升的峰值。如果沒有安裝EZ系列磷監測儀，管理人員根本不可能發現此問題，得要一直等到實驗室分析水樣之後才會有所察覺。 因此，EZ系列水中磷監測儀讓管理人員能夠提前為即將到來的磷濃度高峰做好應變措施準備。EZ系列水中磷監測儀每小時都會在砂濾前後採集水樣，並分析總磷和正磷酸鹽的濃度。
The phosphorus data and trending information allows him to turn up his wasting and send more to the thickeners and press it out.
The dual stream, two channel EZ analyzer measures pre and post tertiary sand filters. This allows the plant operators to see the difference between pre and post sand filters to know if anything is going on in sand filters and provides a full picture. The EZ data trends should show a drop in phosphorus with the tertiary treatment removing mostly the reactive phosphorus and some ammonia.
The dual stream, two channel EZ analyzer measures pre and post tertiary sand filters. This allows the plant operators to see the difference between pre and post sand filters to know if anything is going on in sand filters and provides a full picture. The EZ data trends should show a drop in phosphorus with the tertiary treatment removing mostly the reactive phosphorus and some ammonia.
磷濃度的監測數據和趨勢資訊讓操作管理人員能夠提高廢污水處理量，並將更多污水送入濃縮機。
此款雙水樣流和雙通道的 EZ 水中磷監測儀可測量三級砂濾前後的污水，讓操作人員能夠比較砂濾前後的污水情況，進而了解砂濾過程中是否有任何問題，並提供污水處理的全面資訊。由於三級處理程序主要消除了反應性磷和部分的氨，EZ 水中磷監測儀的數據趨勢應顯示磷濃度下降。
Spring time tends to bring spikes of phosphorus as industries and facilities are using chemical cleaning products made with phosphorus. These chemicals eventually make their way to the plant influent spiking up to 2 mg/L and causing foaming at the primaries. The operators can manually dose ferric chloride in the raw influent and flow paced to the secondaries while turning up wasting out of the secondary clarifiers to the thickeners to eventually press out the phosphorus. The EZ Series analyzer data trends in SCADA allow the plant to react and take action faster than previous operations with a 24 hour composite sample.
Hach’s on-line EZ Series Phosphorus analyzer has prevented daily P limit violations.
Hach’s on-line EZ Series Phosphorus analyzer has prevented daily P limit violations.
春季時，水中磷的濃度常常會激增，因為工業和相關設施會使用含磷的化學清洗產品。這些化學物質最終會進入污水處理廠的進水，使得磷濃度飆升至 2 mg/L，並在初級處理池中產生泡沫。管理人員可以手動向原水中投加氯化鐵，並控制流向二級處理池的流量，同時增加二級沉澱池的廢污水流量，最終將磷排出。 設置於SCADA 系統中的 EZ 系列水中磷監測儀的資料趨勢分析功協助污水處理廠操作人員能夠比以往更快地做出反應並採取措施，只需分析 24 小時的混合水樣即可。
Hach 線上 EZ 系列磷監測儀有效防止了每日磷濃度超標的情況發生。
Wastewater treatment plants can be easier to operate when processes are consistent. The EZ Series analyzer allows them to achieve their more stringent Summer permit limit all year long and keep the plant running well and efficient.
污水處理廠在處理程序穩定可靠的情況下，運作會更加容易。 EZ系列水中磷監測儀能夠協助污水處理廠全年達到更嚴格的夏季排放限值，確保其高效率穩定運作。
Hach’s easy to use TNTplus chemistry allows you to test for reactive or total phosphorus with each vial with multiple range options available as low as 0.01 mg/L PO4-P.
The lab test matches within +/- 0.01 mg/L. “Words that come to mind when describing the DR3900 and chemistries are convenient, easy to follow and user friendly” said their lab chemist.
The lab test matches within +/- 0.01 mg/L. “Words that come to mind when describing the DR3900 and chemistries are convenient, easy to follow and user friendly” said their lab chemist.
實驗室人員使用 Hach DR3900可見分光光度計。搭配 Hach TNTplus 水中磷預製試劑可讓您對每個水樣瓶內的反應性磷或總磷濃度進行檢測，並提供多種量測範圍選擇，最低偵測限值可達0.01 mg/L PO4-P。
實驗室分析結果與實際值相差在±0.01 mg/L以內。污水處理廠的實驗室化學人員表示 :「DR3900分光光度計和其試劑的優點在於簡便、容易操作和使用者友善設計」。