New Sewage Treatment Plant for Lesotho Diamond mine
WEC Projects, a South Africa EPC contractor specialising in water and wastewater treatment solutions, will soon complete the installation of a new WEC Model B packaged sewage treatment plant at the Mothae Diamond Mine located in the Maluti Mountains 214kms from Maseru, Lesotho. The mine is 70% owned by Lucapa Diamond Company and 30% by the Government of Lesotho.
According to Rudolf de Koning, sales representative at WEC Projects the mine lacked a sustainable sewage solution. Producing 60m3 of domestic raw sewage per day, Mothae utilised honeysuckers – sewage trucks – to dispose of the sewage at the nearest disposal facility, almost 130km away. “This was obviously a very costly method of sewage disposal. WEC proposed the installation of its Model B conventional activated sludge (CAS) treatment plant with a daily capacity of 80m3 which allows for future upgrading and expansions of the mine operations,” says De Koning.
The R3.2-million installation is a combined activated sludge and clarification treatment plant. Its modular design simplifies the logistics involved in transporting to the site and simplifies assembly as well as ensures a smaller overall footprint.
The Mothae installation also integrates a Wastemaster that includes screening, de-gritting, and oil removal to cope with fats and oils present in the sewage which could adversely affect the aerobic process in the plant’s reactor. The Wastemaster removes the oils, fats and non-biodegradable material upstream from the treatment process. The plant will treat the mine’s grey and black water piped to the current septic system.
“Besides the high fat and oil levels, another factor which could affect the treatment plant’s effectiveness was the high altitude of the site which results in low, fluctuating temperatures. The biological population growth occurs optimally at around 19°C and above. In order to ensure the proper ambient temperature is maintained, the plant will be assembled within a larger enclosed facility”, explains de Koning.
In addition to making the mine more environmentally compatible through the effective treatment of its domestic sewage, the plant also reduces the costs of transporting waste to the nearest disposal facility, saving the mine hundreds of thousands per month. Another consideration is that water availability reduces considerably in the area during the winter. The new plant can help the mine reduce its water consumption.
According to Thato Tsephe, Project Foreman at Mothae the mine worked closely with WEC Projects on-site to develop a sustainable solution. “WEC Projects had previously installed a sewage treatment plant at the neighbouring Letseng Mine and it was that facility that encouraged us to approach them. What is critical for us, what is critical for us is to complete the civil works and installation and commissioning of the plant during the winter season with the harsh climate posing many challenges,” says Tsephe.
WhyAfrica provides you with business intelligence that matters. WhyAfrica specialises in African affairs and natural resources. Africa is our business, and we want it to be yours too. To subscribe to WhyAfrica’s free newsletter or digital magazine, and for more news on Africa, visit the website at www.whyafrica.co.za or send a direct message. WhyAfrica launched its first ever digital magazine in November 2021. The company will undertake a road trip through South Africa, Namibia, Zambia, Zimbabwe and Botswana in June and July 2022. If you are interested in sponsorship or advertising opportunities, please contact me at email@example.com. We have a wide range of different packages and combo deals to give your company the greatest exposure to a rapidly growing, African readership.
The Road trip issue of WhyAfrica’s magazine is now available in print. The magazine will be distributed in South Africa, Namibia, Zambia, Zimbabwe, and Botswana during WhyAfrica’s Southern Africa Overland Road Trip, the company’s new and innovative platform. WhyAfrica has expanded its product range and now offers its readers, followers, advertisers, subscribers and partners the following:
- Daily 24/7 online articles on WhyAfrica’s website (FREE)
- Daily updates on WhyAfrica’s social media platforms (FREE)
- Newsletters delivered to a handpicked audience every two weeks (FREE)
- Two printed magazine per year distributed at large events and during our road trips across Africa featuring original, in-depth articles (FREE) with great, on-site photographs by the WhyAfrica team (FOR SALE UPON REQUEST)
- Three digital magazines per year (FREE)
- Live updates, video clips, articles, and podcasts during and after WhyAfrica’s annual road trips (Southern Africa in 2022, East Africa in 2023 and West Africa in 2024) (FREE)
- Sponsorship and advertising opportunities for the annual WhyAfrica Overland Road Trips (PAID FOR)
- A library where companies doing business in Africa can display scientific or research papers (PAID FOR)
- A product section where companies doing business in Africa can display new offerings or services (PAID FOR)
- Media partnerships with, and a presence at, most of the major conferences and exhibitions in the African mining, energy, agriculture, infrastructure, water management, ESG, environmental management, tourism, development, and conservation sectors (FREE)
- WhyAfrica connects potential investors with new ventures in Africa and suppliers and service providers with existing companies in Africa (PAID FOR)
- WhyAfrica assists companies in generating content focused on the wider African business community (PAID FOR)
- Partnerships with companies doing business in Africa (PAID FOR)
- Partnerships with companies thinking about expanding into Africa (PAID FOR)
- In 2023 subscribers will have access to our in-depth articles about the African political economy, research, and country reports about the countries we visit on our road trips, and trends in the sectors that we cover (PAID FOR)
- A WhyAfrica book is in the pipeline and if all goes according to plan, should be published towards the end of 2023 (PAID FOR)
- The WhyAfrica consultancy arm assists and advises companies doing business in Africa through utilising our extensive global business network (PAID FOR)
Become part of the WhyAfrica community. Tell us your story. Expand your footprint across Africa and partner with us to make the most of your African experience.