Vacuum pump for lab scale bioventing

已知大约25%的地下储罐系统会将汽油泄漏到环境中。生物通风是修复被汽油污染的土壤的好方法，包括棕地，棕地通常具有某种形式的石油烃污染。 生物通风是向土壤中添加养分和水分，以刺激本地微生物种群降解污染物的过程。挑战在于，需要在每一种土壤上进行测试，以确定该过程是否可以或应该应用于特定地点。 因此，将完成各种生物降解研究，以确定通用的降解表达式，将结果从一个地点转移到另一个地点，并评估放大系数。 这将使用三个秤来完成，微观（200 g），中观（4 kg）和宏观（100 kg）。 较大的反应器将允许土壤异质性被纳入。 在各种测试中需要考虑的因素包括污染物的老化，氧气消耗，微生物生长量，含水量，pH值，对土壤类型的影响（渗透性）。完成研究需要一个耐用的真空泵来模拟实验室中的生物通风条件，其中吸入的空气提供刺激好氧细菌所需的氧气。 所要求的泵可以在无润滑剂的环境中为中型和大型测试提供所需的流量。 此外，它是防爆的，具有非常低的分贝等级。 在实验室环境中工作时，这两个因素都是重要的安全考虑因素。该设备对于完成相关性评估和放大系数的拟议工作至关重要，以便将实验室结果转移到现场。

Approximately 25% of all underground storage tank systems are known to be leaking gasoline into the environment. Bioventing is a good way to remediate soil contaminated by gasoline, including Brownfields, which typically have some form of petroleum hydrocarbon contamination.  Bioventing is the process through which nutrient and water are added to the soil to stimulate the native microbial population to degrade the contaminant. The challenge is that tests need to be done on every soil to see if the process can or should be applied to a particular site.  Therefore, a variety of biodegradation studies will be completed to determine a universal degradation expression to transfer the results from one site to another and to evaluate scale-up factors.  This will be done using three scales, micro (200g), meso (4 kg) and macro (100 kg).  The larger reactors will allow soil heterogeneity to be incorporated.  Factors to be considered in the various tests including aging of the contamination, oxygen consumption, amount of microbial growth, water content, pH, impact on soil type (permeability).Completion of the research requires a durable vacuum pump to simulate bioventing conditions in the lab, where the drawn in air provides the oxygen necessary to stimulate aerobic bacteria.  The pump requested can provide the desired flow for the meso and macro scale tests in a lubricant free environment.  In addition, it is explosion proof and has a very low decibel rating.  Both factors are important safety considerations when working in a laboratory setting. This equipment is essential to complete the proposed work on correlation evaluation and scale-up factors for transferring the lab results to the field.