We do testing, feasibility studies, design, construction, equipping, training and operation of modern sustainable high-purity water and wastewater treatment and reuse systems for residential, commercial, community, industrial and institutional applications.
Our range of services includes
a) Water/Wastewater Quality Monitoring, Testing and Analysis
b) Water and Wastewater Treatment System Design.
At Joist Africa this process begins with preliminary design followed by feasibility studies/analyses then flow sheeting which uses the appropriate combination of any of the following processes:
- Physical Processes – includes floatation, decantation, screening, sedimentation, comminution, filtration, centrifugal separation;
- Chemical Processes – includes PH adjustment, coagulation and flocculation, precipitation, oxidation and reduction, scale and corrosion inhibition, chemical solution dosing, disinfection by chlorination, ozonation, UV-radiation, ;
- Biological Processes – includes
- Aerobic fixed film processes (e.g. trickling filters, rotating biological contactors-RBC, fluidised beds, biological aerated filters-BAF)
- Aerobic suspended growth processes (e.g.extendend activated sludge-EAS, aerobic granular sludge-AGS, sequencing batch reactors-SBR, biological nutrient removal-BNR, membrane biological reactors-MBR)
- Anaerobic biological processes
- Sorption process – includes ion exchange softening, ion exchange deionisation, mixed bed polishing;
- Membrane Processes – includes reverse osmosis-RO, electrodialysis, dead-end microfiltration, cross-flow microfiltration, ultrafiltration, and nanofiltration;
c) Odour Analysis, Control and Management
Olfactory and Hydrogen sulphide analysis for odour measurement; Hydrogen sulphide analysis and dispersion modelling for odour assessment; biological, chemical and physical odour treatment processes.
