Urban rivers are subjected to severe environmental abuse from litter generated in the cities and transported via the storm water systems to the rivers. Polluted rivers are unacceptable from an environmental and aesthetic point of view. Pollution of urban rivers and streams are a worldwide trend.
On the whole, the Jukskei River just below Bez Valley in Johannesburg is the cleanest it has ever been. The canalised Bez Valley Park litter trap is clearly working. However, litter still gets into the river system through littering downstream.
This paper looks at the various opportunities and technologies that exist for solving both of these problems. It is interesting to note that while landfill has been banned and is discontinued in many countries, there has been an increase in the development of waste-to-energy or energy from waste (EfW) facilities. In addition, a number of technologies have been developed to enhance the minimisation, reduction and treatment of waste streams.
In November last year, just off the M1 South onramp at the Grayston / Wynberg Drive intersection, heavy rains burst a storm drain. Mud, rocks and other debris spewed onto the highway, blocking one lane. Days passed before anything was done about it. Now, more than two months later, the damaged storm drain has still not been repaired and is a serious, and potentially deadly, hazard for pedestrians using the bordering dirt road and vehicles taking the M1 South onramp.
The first Terex asphalt paver to arrive on South African shores was recently showcased to members of the local paving industry who were impressed by the unit's simplicity of design, rugged construction and ease of operation.
Babcock Brands CEO, Mark Hughes, says: ''Eight years ago, Babcock Equipment took on the exclusive franchise for Volvo Construction Equipment in Southern Africa, selling its range of articulated haulers, backhoe loaders, tracked excavators, motor graders and wheeled loaders. In 2007, Volvo purchased the Ingersoll-Rand Road Equipment Division to develop its own line of road construction machinery and as Volvo machines and parts sales represent the major portion of our business, the decision was made in favour of Volvo to offer clients an even greater choice of equipment from this Swedish OEM.''
Road commuters passing though Gauteng's Midrand area will have noticed the steady expansion of the Gautrain Rapid Rail Link's imposing new depot facility and marshalling yard situated within close proximity to the N1 freeway. The latter will serve as the central point for the entire railway system, and trains will leave from here to travel along their underground and surface routes, returning at the end of each shift to be stabled in their specially designed hangers.