Mining Mirror September 2018 | Page 60

Cradle to grave Control water management Mining companies need an effective water management strategy. It is imperative that mining companies implement an effective water management strategy that will minimise carbon footprint, save time, and improve workers’ productivity. According to Philip Wood, international business development manager at Polypipe, there are five important actions that will enable a mining company to manage its water use effectively. “It is important to spend time researching the right piping system rather than the cheapest option, which may not always deliver the required results, for example pressured pipes versus gravity-fed applications such as HDPE. Taking the time out to do thorough research will save time and provide a cost-effective solution in the long run,” he says. Understanding where the water source is coming from and how it is being used is crucial to control water management. “Start by drawing a schematic diagram that shows inflows, sources of fresh and process water, and how it’s recycled. This will allow you to understand the situation and adopt [58] MINING MIRROR SEPTEMBER 2018 the changes necessary,” Wood advises. Another key step is to understand the cost of water on both a financial and risk basis for current and future conditions. Consider how your operation impacts the environment and whether you could implement alternative methods to optimise water use and save time and money. According to Wood, one way to achieve a more streamlined production is to ensure your employees are on the same page. Make sure employees can identify any practices that need to be rectified during your water management solution process, which in turn will also improve productivity. “It’s important that employees are taught about the importance of controlling your water management and any processes being implemented that will allow you to do this more effectively,” he says. “For many mining applications, pumped water management systems are a necessity and the associated pipework must be capable of withstanding a specified internal pressure. However, towards the end of a mine’s water cycle, pressured systems are still being specified when gravity pipes could provide a more economical solution. Understand which piping system is going to provide the best solution and why. Once this is clear, you can be sure the investment will be worthwhile for your business now and in the future.” Wood says that pumps are one of the most expensive components on a mine site and even more costly if they are specified when they are not truly required. “Saving money and time are two important factors to consider when it comes to investing in pipes; therefore, you should investigate whether your intended piping installation could operate successfully without the need for pumps just by investing in gravity-fed pipework systems. High-quality and high-density polyethylene (HDPE) twin-wall pipes, designed for gravity application, offer a cost-effective solution, reducing transport and labour costs, along with installation time,” Wood concludes.