Rhino Water offers innovative and customised solutions for all water, effluent and waste requirements. Our primary focus is to lower water consumption and environmental pollution through harvesting, recycling and bioremediation of water and effluent.
Our clientele varies from small domestic users to large industry, including factories, office blocks and shopping centres across South Africa and several African countries, as well as farms and housing developments in South Africa.
Rain water is harvested, treated and stored in tanks and reservoirs for re-use as potable water, in irrigation applications or as toilet flush. For new buildings, the design can include harvesting from paved areas.
Design of the water filtration and storage systems is customised to meet specific water quality requirements. Our technologies meet Green Star rating for office blocks.
For many applications the total water demand can be recovered from rain water harvesting. The total volume of water harvested is easily calculated as:
Total annual water harvested = Total roof and paved area x average rainfall per annum.
As an example, a house with a roof area of 250 square metres and an annual rainfall of 650mm will generate an average of 13 500 litres of water per month (450 litres per day), which will comfortably serve three people.
Dam liners and flotation covers
Rhino Water provides a turnkey solution for the construction and installation of dam liners for earth dams, ponds, canals and reservoirs for the containment of water, sludge, fertilisers and waste water. Geotextiles are installed as underlayer to dam liners where soil conditions require protection of the dam liner. Typical applications include farm dams, waste water treatment works, landfill sites and mining applications.
Made-to-fit flotation covers offer reduced evaporation and algae growth. The presence of birdlife is also prevented where required, such as in dams near airports where they pose a threat to aviation.
Installation meets AIGI and SANS requirements, while seaming meets GR Test Method GM19 requirements. All seams are non-destructive seam tested.
- High Density Polyethylene (HDPE)
Benefits: High tensile strength; impact, tear and puncture resistance; good environmental stress cracking resistance; and highest resistance to chemicals.
Best for: Lining landfills, insulating chemical plants, roads, petrol stations and mining applications.
- Low Density / Linear Low Density Polyethylene (LDPE/LLDPE)
Benefits: Good mechanical properties and more flexible than HDPE. New-generation LLDPEs, with additives such as metallocene, match HDPE in strength while maintaining excellent flexibility.
Best for: Applications where a very high chemical resistance is not essential.
- Ethylene Vinyl Acetate (EVA)
Benefits: highest flexibility of all polyolefin geomembranes and often replaces PVC membranes
Best for: lining concrete and irregular-shaped reservoirs. Unsuitable for use in warm climates without covering.
Water treatment solutions include conventional filtration technologies to treat a range of water sources such as boreholes, sub-surface springs, dams, rivers, industrial processes, rain water and sea water:
- Sand, AFM and particle filters
- Carbon filters
- Membrane filters (ultra filtration, reverse osmosis and other)
- Disinfection (UV, ozone, chlorine and other)
- Water softeners and clarifiers
Plant configurations include custom installations, skid-mounted and containerised options.
Sewage and grey water
Two different technologies are offered for the treatment of black water (sewage) and grey water (typically from showers, basins, washing machines, car wash and industrial wash water). These are:
- Submerged fixed-film aerated technology
- Membrane reactor (MBR) technology
Their use depends on the required quality and application of treated effluent.
Rhino Water's plants are ideally suited for rural communities, temporary camp sites, holiday resorts, service stations, mining facilities, factories, housing developments and smaller municipal waste water treatment plants. The plants are reliable with low maintenance and energy requirements.
Submerged fixed-film aerated technology
Over the last 40 years, submerged fixed-film technology has proven itself to be reliable and cost effective. We have installed, commissioned and operated many successful plants in Africa.
The process uses naturally occurring bacteria and oxygen to reduce the biochemical oxygen demand (BOD) load and facilitate the nitrification and denitrification of ammonia.
The system comprises four stages:
- Effluent flows via gravity to a collection sump or lifting station.
- Anaerobic and aerobic treatment, which employs bioreactors.
- Clarifier where settled sludge is recycled back to the anaerobic phase.
Fixed-film systems produce very little sludge. Small quantities collected in the settling tank are returned to the anaerobic phase and broken down into methane gas, carbon dioxide and water. Depending on the volume and BOD influent values, the anaerobic zone (septic tank) will require de-sludging every three to five years.
Our effluent systems are robust with little maintenance requirements. The only moving parts are the pumps which operate automatically. Back-up aeration pumps and off-the-shelf components reduce downtime and enable trouble-free operation in all conditions across Africa.
All our systems are designed to meet the Department of Water Affairs' general standards, applicable to discharge to a water resource.
Plant designs include three options:
- Concrete systems: Generally for flows exceeding 200 kl/day.
- Containerised systems: 50 kl/day for 12m containers or 25 kl/day for 6m containers. This option is best suited for short to medium term projects such as construction camps. Modular designs are easily upgradable to meet growing capacity loads, and location-specific demands can be accommodated in every design.
- Freestanding sewage treatment plants: 1 – 50 kl/day. Chemical grade, UV-protected roto-moulded tanks are used.
Membrane Reactor (MBR) Technology
MBR technology is extremely efficient in treating high organic load effluent, including food process waste, industrial waste water, and effluent containing fats, oils, greases and sewage. Treated effluent complies with the Department of Water Affairs' general standards, applicable to discharge to a water resource, and may be used for irrigation, toilet flush and process wash water.
MBR technology combines membranes separation and conventional activated sludge (CAS) process. While the CAS process uses a secondary clarifier or settlement tank for solid/liquid separation, an MBR uses a membrane for this function, greatly improving solid-liquid separation and producing effluent of a very high quality. Nominal pore size of membranes is typically 0.1 microns and effectively removes all suspended solids and virtually all bacteria and protozoa from the wastewater, resulting in a clarified and disinfected product effluent.
Since the sludge solids are completely retained in the bioreactor, the solids retention time in the bioreactor can be controlled separately from the hydraulic retention time. High sludge concentrations can thus be treated in a much smaller footprint and retention time than with other technologies.
Our bioremediation process is assisted by addition of specific natural bacteria to significantly reduce COD, BOD and suspended solids, and effectively remediate fats, oils and grease as well as petroleum hydrocarbons. Odour control is achieved through breaking down of hydrogen sulphide and complex mercaptans. Real bottom-line savings are achieved by increasing overall efficiency of the plant and reducing sludge removal frequency.
Food and beverage waste
Rhino Water offers turnkey solutions for the bioremediation of food and beverage waste.
Waste, normally in pulp form, is de-watered. The solids are treated with bacteria to increase the rate of decomposition and enhance the composting efficiency. The water effluent from the process is treated anaerobically and aerobically, and clean water extracted, using MBR technology, to recover water suitable for wash water or irrigation purposes.
Cold and hot water storage
Rhino Water offers a range of high quality tanks and reservoirs for rural, domestic, commercial and industrial applications. Storage capacity ranges from 1 000 litres to two million litres, with a range of dimensions to suit space constraints.
Construction types include roto-moulded, fibreglass (segmented or moulded) and steel-coated tanks.
Hot water tanks are constructed from insulated fibreglass panels, which are bolted together and sealed on site. This unique design allows for tanks to be installed inside buildings or on rooftops without disrupting building construction or using cranes, as the panels fit through a standard door.
Our unique waste treatment solutions are specifically geared for the red meat and poultry industry. Abattoirs require specific technologies to effectively treat the wide range of waste categories specific to the industry, including blood, solid waste, stomach contents and mix of animals slaughtered.
Challenges include high ammonia, COD, BOD, coliforms, nitrate, TSS levels, blood and the slow decomposition rate of animal waste and stomach contents.
Our solution consists of a packaged plant to treat blood, organic waste and wash water to municipal discharge and irrigation standards, which can be recycled as wash water. Blood is pre-treated and added to the rest of the waste in an anaerobic digester with sufficient retention time to allow for further treatment in a waste water treatment plant (WWTP). The WWTP includes anaerobic and aerobic zones, aeration and flat-sheet membrane technology with sludge return pumps.
The plant design is modular, with most components pre-manufactured for easy installation. The anaerobic digester is constructed above ground to allow for effective maintenance, but lined earth dams may be selected if required.
Photosynthetic, chemosynthetic, aerobic, facultative and facultative anaerobic bacteria increase the breakdown rates of hydrocarbons, mercaptans and FOGs, significantly reduce sludge generation, and improve the nitrification and denitrification process to ensure the desired results, including the lowering of effluent waste (COD, BOD, TSS, H2S) and eliminating odours.
Manure, sludge and oxidation ponds
A consortium of bacteria and oxidation methods is used to treat manure slurry ponds for the poultry, swine and cattle industries. This solution is also effective for treating oxidation ponds that form part of municipal waste treatment systems.
Where effluent from the pond is used as fertiliser, the quality of fertiliser is improved to allow for higher application rates.
Open water bioremediation
The careful selection of an effective consortium of natural bacteria and nutrients to consume slow-to-degrade organic compounds has contributed to Rhino Water’s success in remediating small and large ponds, lakes and rivers.
Treatment significantly improves the vitality and stability of these natural bodies of water, restoring their capacity to support aquatic life as well as their value for conservation and recreational activities.
All products used in the process are:
- compliant with environmental regulations.
Rhino Water's technology treats several types of industrial effluent, including hydrocarbons such as oils and grease.
Where effluent comprises mostly contaminated water, the water portion is recovered as wash water, which may be recycled to the plant.
Fat and grease traps
Our specially formulated bioremediation products combine aerobic, anaerobic, facultative as well as photo- and chemosynthetic bacteria to enhance the biological process of degrading organic waste into its basic elements.
The products contain only naturally occurring, non-genetically modified bacteria, and work with nature to provide benefits in an economical, sustainable and easy-to-apply manner. Other benefits include:
- Eliminating bad odour from traps
- Degrading fats, oils and greases in grease traps
- Reducing frequency of pumping
- Preventing pipe clogging
- Improving flow and water quality in sewer line
Damsak water storage
Rhino Water is the primary distribution agent for Africa for the patented range of Damsak water storage solutions.
Damsak is an extremely cost-effective and patented bladder storage option for liquids.
It is manufactured by welding polyvinylchloride (PVC) impregnated tarpaulin sheet material together. This material has an internal polyester mesh making it exceptionally strong.
Special jigs are used to give the corners their unique and important shape. The novel design allows for the storage of an unlimited volume of liquid, simply by varying Damsak’s footprint. This is a major advantage over existing wire mesh and vinyl reservoirs as well as other bladder reservoirs. It also provides an attractive alternative to concrete reservoirs, which are expensive to install and may require extensive maintenance as they age.
Damsak bladders are collapsible – a 200,000-litre bladder can be transported to site in a car boot. Sizes vary from 500 litres to 200,000 litres, although made-to-fit, customised options may be possible.
Algae and the like will not grow in Damsak reservoirs as water is stored in a closed and dark environment. As it is a closed system, there is also no evaporation.
Pricing is extremely competitive for storage of over 6,000 litres, and below that, comparable to moulded tanks.
Contact firstname.lastname@example.org for more information and pricing.
- T:+27 (0)41 451 3197
- F:+27 (0)41 451 2223