D&S recently designed and supplied a containerized (20ft) water treatment plant for use by the Somali Development Fund facility in Somalia for their potable water requirements.
The plant included a 2m3/hr Dayliff Ultrafiltration Plant upstream of the 1m3/hr Dayliff Reverse Osmosis plant. The Dayliff Ultrafiltration acted as a pretreament to the Dayliff Reverse Osmosis plant and included smart PLC based Control Panel that controlled the operation of the electric actuated ball valves and pressure transducers that controlled the different Ultrafiltration plant processes for the smooth operation of the plant.
Pre-treated water from the Ultrafiltration plant was then transferred to the 400L break tank (T400) where the Dayliff Reverse Osmosis Plant low pressure pump would draw the water and transfer the water to the High Pressure pump of the Dayliff Reverse Osmosis plant for treatment before finally being transferred to the clean water storage tank. The break tank included several float switches controlled from both the Ultrafiltration and reverse osmosis control panels to ensure smooth operation of two plants within the container.
Key Dayliff Ultrafiltration Design features
Key Dayliff Reverse Osmosis Design features
Other features
D&S recently undertook a project to supply a 7m3/hr Dayliff Reverse Osmosis (DRO) plant to the Unilever Factory in Nairobi. The client required us to design a solution to treat their municipal source of water to target reduced TDS levels and adjust the PH to the required levels for their processing plants at a rate of 7m3/HR. The RO plant was designed at 72.50% recovery and used DOW filmtec BW30-400 membranes to produce a permeate TDS of 0.83ppm from raw water TDS of 102ppm.
The system incorporated pre-treatment using glass media and activated carbon respectively for reduction of turbidity and removal of chlorine.
The controls are achieved from a single control panel that automatically controlled the operation of the plant, facilitating the filtration cycle that produced potable water and the feed flushing cycle which help clean the membranes. The system also provided for a Cleaning in Place (CIP) system fully integrated on skid for the RO CIP requirements.
The project was designed to treat raw water from a spring in Mt. Kenya Forest to meet drinking water standards which contained high levels of turbidity and microbial contamination. Design of the project was spearheaded by D&S Water treatment Department and D&S Engineering was involved in the assembly of the 1m3/hr Dayliff WP Plant. WP plants are highly robust systems for the removal of suspended solids and disinfection from disease causing bacteria and viruses.
The project was designed to treat raw water from Lake Naivasha to meet the standards for domestic use and utilization in Olkaria Power Station. The project was spearheaded by D&S Water treatment Department who undertook the design while D&S Engineering was involved in the assembly of the 30m³/hr Dayliff WP Plant. WP plants are highly robust systems for the removal of suspended solids and disinfection from disease causing bacteria and viruses. The facility has been using this plant for removal of color, organic molecules, turbidity, bacteria and viruses, providing clean potable water for consumption
The project was designed to provide a treatment solution for spring water to be supplied for consumption and distribution. The project was spearheaded by D&S Naivasha in collaboration with the water treatment department.
D&S undertook a project to supply an Ultrafiltration (UF) and Reverse Osmosis (RO) plant for use in supply treated water to the Lake Naivasha Resort at an average rate of 15000 litres per hour. The recovery of the plant was designed at 81% recovery for the UF and 70% for the RO plant. (Permeate i.e. treated water to the feed water ratio).
In addition to the systems D&S scope included the supply of the low pressures booster pump, dosing systems (pH, SMBS and Antiscalant dosing), Micron pre-filter (5 micron), Reverse Osmosis equipment, 5000 L Clean water buffer tank, Clean water transfer pump, the CIP chemical tank and CIP pump.
The Voyager Beach Resort is a luxury hotel located along the coast bordering the Indian Ocean.
Davis & Shirtliff undertook a project to supply a Reverse Osmosis (RO) plant for the treatment of highly brackish borehole water for the Beach Resort. Based on the estimated water demand, the plant was designed to produce treated water an average rate of 12000 litres per hour (12m3/hr) with the optimum recovery of the plant set at 50% recovery. ( i.e. treated water to the feed water ratio).
To ensure that the water feeding the RO membranes is of the correct quality to increase membrane life, water to the Dayliff RO equipment was supplied along with a pre-treatment system which entailed a Dayliff Filtration System that incorporates sand and activated carbon for the reduction of suspended and particulate matter
The scope of D&S include the supply of the low pressures booster pump, dosing systems (pH, SMBS and Antiscalant dosing), Micron pre-filter (5 micron), Reverse Osmosis equipment, 5000 L Clean water buffer tank, Clean water transfer pump, the CIP chemical tank and CIP pump.