WASTE WATER TREATMENT SYSTEMS
Municipal or domestic wastewater is that which is generated from households, Hotels, commercial and institutional Facilities in the urbanized areas. WABCO handles a huge spectrum of Municipal Wastewater Treatment plants that vary in their processes and capacities. Domestic wastewater treatment is normally associated with sewage, which is characterized by many components most importantly: BOD and Suspended Solids (SS). WABCO’s Sewage Treatment Plants provide very wide ranges, Capacities and Technologies for their applications requiring aerobic, anaerobic or anoxic treatment processes for BOD, SS, Nitrogen and Phosphorous removal.
WATER TREATMENT SYSTEMS
REVERSE OSMOSIS PLANTS
WABCO offers unlimited capacities and a wide range of Reverse osmosis plants that will fit the client’s needs & expectations, some of WABCO’s plants have been used as part of a unique composition where precise and flawless parameters are mandated. Our Domestic, Clinic, and Laboratory standard product range has a capacity of (10 – 1000 m3/d). The higher demand plants are custom designed for unlimited capacities. Such plants are used the Industrial, Domestic, and Irrigation fields with such capacities as 10,000m3/d and above.
The basic components of any Reverse osmosis plants consists of membranes, pressure vessels that contain the membranes coupled with the structure which cohere the configuration, as well as high pressure pumps and pre/post treatments of the plant.
WABCO considers the material selection of Reverse Osmosis plants an important issue, as appropriate selection will prolong the plant’s life expectancy, Stainless Steel (S.S.) piping is used for feed/reject and high pressure lines; where PVC piping is usually used for low TDS and low pressures. Furthermore; properly selected monitors / controls and displays are chosen so that the plant’s performance will be sustained and monitored properly.
WABCO’s plant module consists of spiral wound membranes inserted in GRP vessels; racking system is designed & built to meet the module configuration, as the spiral wound contour is most successful for domestic & wastewater effluent. The plant’s configuration can be arranged either in parallel to provide adequate hydraulic capacity or in series to affect the desired degree of demineralization, with respect to the site layout.
Quality Control is implemented by stringent procedures throughout the procurement and manufacturing processes. Our procurement department insures that all materials and equipment used meets or exceeds the standards set by the customer. On the other hand, our manufacturing personnel are responsible for supplying and installing QC calibrated gauges which are placed to reflect the actual conditions, as well as product and reject flow indicators that are used to monitor & adjust flows in accordance to the design parameters.
There are many different methods of filtration, but all aim to attain the separation of two or more materials. This is achieved by some form of interaction between the substance or objects to be removed and the filter. In addition the substance that is to pass through the filter must be a fluid, i.e. a liquid or gas.
Sand filtration is frequently used and very robust method to remove suspended solids from water. The filtration medium consists of a multiple layer of sand with a variety in size and specific gravity. When the filters are blocked with solids, the flow direction is Reversed ( Backwash ) to clean the filter again.
WABCO provides a wide range of Gravity Sand Filters which are used to remove suspended solids from raw surface water as a final treatment unit before chlorinat0ion. In addition, these filters can be used in wastewater treatment during the final stages and after the biological treatment to provide more polishing to the secondary treatment effluent as tertiary treatment gravity sand filters.
WABCO provides design, manufacturing, supply, and installation services for all types of Gravity Sand Filters such as slow gravity and / or rapid gravity. The filters designed based on the demand required by our clients and the design provided by our Environmental Team.
Pressurized filtration is the most common pretreatment method used in of water treatment. The pressurized filtration requires a filter feed pump(s) and a filter vessel(s). The purpose of pressurized filtration is the removal of suspended solids and other contents of water. The operating pressure ranges from 2.5 – 6.0 bar, the size and constituents of the filter depend on its purpose. Mainly two support layers one a top another followed by another smaller grain size supportive layer as well as an active layer. The active layer may be sand for filtration of suspended solids, birm for removal of iron, carbon for removal of chlorine & odor, anthracite for fine filtration, etc…
The design of the filter vessel requires a case study on the application and varies from one to another.
The Silt Density index should be maintained below 3. Proper periodic backwashing insures longer and better operating regimes