Monday, April 23 2018
Grootvadersbosch Nature Reserve
A2V in joint venture with Flowline carried out an upgrade to the exiting water treatment plant for Cape Nature Conservation. The project included an analysis of the existing system which had fallen out of use and recommendations on its upgrade. The project comprised the following:
- supply of a duplex zeolite filter system with automated backwash
- automation of the coagulation and settling system including new dosing equipment and actuated valves for sludge wasting
- supply and installation of a simplified Calcium hypochlorite dosing system for disinfection.
- a larger buffer tank for improved filter backwash
A2V in a joint venture with Conns Water designed and supplied a sea water treatment plant at their facility in Veldrif. The treatment plant designed to treat 40m3/hr includes a coagulation and settling stage followed by filtration and disinfection. The treated water is used in the factory to reduce their dependence on municipal water.
The coagulation system includes a pipe flocculator ahead of two polyethylene tube settlers. The filtration system includes three FRP (fiber reinforced plastic) filter vessels with PVC pipework and customized backwash valves, all compatible with sea water. Disinfection is achieved by controlled dosage of Sodium hypochlorite.
Ceres Fruit Processors
A2V in joint venture with Conns Water and Sopura, designed and installed a water treatment system to remove iron and manganese from borehole water using a catalytic filter media called DMI-65.
The plant is design to treat 40m3/hr fed directly directly from the borehole pumps via the system to a reservoir. Chlorine dioxide, produced by a generator on site, is used as the preferred oxidant and disinfectant to minimize the risk of chlorine byproduct formation. In line pH adjustment is critical for optimum manganese removal.
This was a turnkey project including civil and building works.
A2V recently completed two projects for Quality Beverages, Epping Industria:
- An effluent pre-treatment plant to increase the pH of their effluent to within bylaw requirements.
- A chlorine dosing system to disinfect the City’s water supply to the highest standards required by Quality Beverages.
The effluent plant included the construction of a new sump over the exiting sewer line while the line remained in service. A pH dosing system was installed into the sump that rectifies the pH as the effluent flows out the the sewer system.
A2V recently completed the air extraction and treatment system to NGK’s newest manufacturing line at their facility in Airport Industria, Cape Town. As per previous projects, the system extracts air contaminated with xylene and other benzine type organic contaminants and treats it through a particulate filter to remove ash, followed by activated carbon filter to remove the organic vapors, before discharging the treated air to atmosphere.
The project also included AC supply to maintain the air temperature in the process at optimal levels as well as the fresh air supply to the operator workstations on the line.
This is the third system that A2V have installed as a turnkey project for NGK and continue to service.
Protea Chemicals, Blackheath
A2V recently embarked on a turnkey project to upgrade Protea’s Blackheath manufacturing facility.
Phase 1 of the project , completed recently, was to upgrade the offloading facility which receives bulk deliveries of concentrated sulphuric acid. A new emergency bund lined in polyethylene anchor knob sheet was constructed and the roadway replaced in reinforced concrete with a heavy duty epoxy system from Sika.
The existing steel oxidizing tanks were also replaced in polyethylene with a galvanized steel support frame for the mixer units.
Indigo Brands Water Security
In response to the recent water crisis in Cape Town, A2V were requested to assist in identifying a solution to ensure Indigo’s water supply in the event of disruption to supply. in addition, the City’s pressure management programme has also reduce supply pressure to the point where parts of Indigo’s facility were no longer receiving water.
The study included test well points, sampling and evaluation of ground water quality through to treatment and recycling of effluent. The solution implemented included a 600kL reservoir fed by municipal water and booster pumps to feed it into the factory and offices. The intention being that in future the municipal supply can be supplemented with treated rainwater, groundwater or effluent. A2V for responsible for the implementation and project management as well.