本文报告了一项定量测量商用药物有效性的研究 磷酸盐基螯合物，在96小时内减少或延迟锰沉淀。 进行了五轮测试，以测试不同条件下多种来源的6种可用隔离剂 条件和混合比。结果表明，6种死蜱中有2种表现最好 当以制造商建议剂量的5倍进行测试时，目标地下水中的锰。 两种产品在48小时内都显示出了有效性。 这些结果表明 固碳剂可以减少锰沉淀问题，但它们的使用不会消除这种担忧。 此外，本研究结果为伊萨卡市利用现有地下水提供了策略 可立即满足夏季高峰需求，并可靠满足未来不断增长的需求 将来包括表格、数字。

This paper reports on a study which quantitatively measured the effectiveness of commercially available phosphate-based sequestrants in reducing or delaying manganese precipitation over a 96-hour period. Five rounds of tests were performed to test 6 available sequestrants on multiple sources under various conditions and blend ratios. Results indicate that 2 of the 6 sequestrants performed the best in controlling manganese in the targeted groundwater when tested at 5 times the manufacturers' recommended dose. Both products demonstrated effectiveness up to 48 hours. These results demonstrate that these sequestrants can reduce the manganese precipitation problem, but their use will not eliminate the concern. Further, results of this study provide a strategy for the City of Issaquah to use existing groundwater sources to meet peak summer demands immediately and to meet reliably increasing demands in the future. Includes tables, figures.