Many hydrological and geochemical studies rely on data resulting from injection of tracers and chemicals into groundwater wells. The even distribution of liquids to multiple injection points can be challenging or expensive, especially when using multiple pumps. An injection system was designed using one chemical metering pump to evenly distribute the desired influent simultaneously to 15 individual injection points through an injection manifold. The system was constructed with only one metal part contacting the fluid due to the low pH of the injection solutions. The injection manifold system was used during a three-month pilot scale injection experiment at the Vineland Chemical Company Superfund site. During the two injection phases of the experiment (Phase I = 0.27 L/min total flow, Phase II = 0.56 L/min total flow), flow measurements were made 20 times over three months; an even distribution of flow to each injection well was maintained (RSD <4%). This durable system is expandable to at least 16 injection points and should be adaptable to other injection experiments that require distribution of air-stable liquids to multiple injection points with a single pump.

中文翻译：

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使用单泵进行多口进样的进样系统。

许多水文和地球化学研究都依赖于将示踪剂和化学物质注入地下水井而获得的数据。将液体均匀分配到多个注入点可能是有挑战性的或昂贵的，尤其是在使用多个泵时。使用一个化学计量泵设计了一个进样系统，以通过进样歧管将所需的进水同时均匀地分配到15个单独的进样点。由于注射溶液的pH值低，该系统仅由一个与流体接触的金属部分构成。在Vineland Chemical Company Superfund站点进行的为期三个月的中试规模注入实验期间，使用了注入歧管系统。在实验的两个注入阶段（阶段I = 0.27 L / min总流量，阶段II = 0.56 L / min总流量），在三个月内进行了20次流量测量；保持流向每个注入井的流量均匀分布（RSD <4％）。这种耐用的系统可扩展到至少16个注入点，并且应适用于其他需要通过单个泵将空气稳定的液体分配到多个注入点的注入实验。