Reverse Osmosis Water Treatment (BWRO)
Modular Compact Plants For Wastewater Treatment
What is reverse osmosis?
Reverse osmosis occurs when pressure is applied to a solute with a high concentration of contaminants. For example, when pressure is applied to a volume of saltwater, the salt is left behind when the water passes to the other side of the membrane. Now, the saltwater is drinkable. The freshwater produced is called the permeate. The concentrate leftover is the waste or brine.
Unfiltered water, or feedwater, flows to the more concentrated side of the RO membrane, where pressure is applied. The pressure forces the water through the semipermeable membrane. Both the contaminants and the membrane contain ions with like charges. Since like charges repel, the contaminants cannot cross to the other side of the membrane.
Stages of RO Systems
Reverse osmosis is only one stage in an RO system. RO systems are made up of 5 or 7 stages depending upon the source water chemistry and contaminants present in the water. In an RO system, water is always treated with reverse osmosis in conjunction with prefilters and post-filters.
Each type of system contains one or more of the following filters:
Benefits of Drinking Safe Water
It lubricates the joints
Cartilage, found in joints and the disks of the spine, contains around 80 percent water. Long-term dehydration can reduce the joints’ shock-absorbing ability, leading to joint pain.
It forms saliva and mucus
Saliva helps us digest our food and keeps the mouth, nose, and eyes moist. This prevents friction and damage. Drinking water also keeps the mouth clean. Consumed instead of sweetened beverages, it can also reduce tooth decay
It delivers oxygen throughout the body
Blood is more than 90 percent water, and blood carries oxygen to different parts of the body.
It boosts skin health and beauty
With dehydration, the skin can become more vulnerable to skin disorders and premature wrinkling.
It cushions the brain, spinal cord, and other sensitive tissues
Dehydration can affect brain structure and function. It is also involved in the production of hormones and neurotransmitters. Prolonged dehydration can lead to problems with thinking and reasoning.
2. Seawater Desalination Plant (SWRO)
The seawater desalination plant can treat and make usable the abundant seawater available. Seawater is taken from Deep Bay by a pumping station. We can make any capacity of the seawater desalination plant.
After screening out of debris, sand, and grit by basket screens, the seawater passes through a series of treatments including coagulation, flocculation, and filtration to remove fine and suspended solids.
Reverse osmosis is the core technology of the seawater desalination plant. Seawater is pushed against a semi-permeable membrane that only allows water molecules to pass through at high pressure, while most of the salts present in the seawater are blocked, forming concentrated salt water which is returned to the sea. The seawater undergoes two stages of reverse osmosis to enhance salts removal.
The purified water can be used as process water without further treatment, drinking water after mineralization, or make-up water for the boiler after further purification.
3. Sewage Treatment Plants (STPs)
The sewage treatment plant process includes sewage treatment in primary, Secondary or biological, and tertiary treatment processes to improve the quality of wastewater for recycling.
With increasing infrastructural development and water usage for various purposes such as domestic and commercial, there is the generation of wastewater.
What type of waste does sewage contain?
Sewage usually contains a high quantity of organic wastes and may also consist of inorganic wastes. It is essential to treat sewage before its entry into any water body. Why so? Sewage, if allowed to enter water sources without treatment, it will contaminate them; which is why it is essential to treat sewage properly before letting it into rivers or streams for example.
4. Wastewater treatment Plant
1. DESCRIPTION OF MOBILE BED TECHNOLOGY (MBBR)
The moving bed technology is based on the growth of biomass in plastic supports that move in the biological reactor by the agitation generated by aeration systems (aerobic reactors) or by mechanical agitation systems (in anoxic or anaerobic reactors). The supports are made of plastic material with a density close to 1 gr / cm3, this allows them to move easily in the reactor even with filling percentages of 70%.
The biofilm that forms on the walls of the landfill is more effective than biological flocs, which makes moving bed reactors smaller in volume than those with activated sludge. The growth of the biofilm on the support causes the internal layers to enter anaerobiosis causing part of it to detach; This means that the necessary biofilm formation is generated automatically depending on the load.
- Lower volume of the biological reactor.
- Highly flexible process, allowing the filling volume to be varied within the reactor.
- It does not require recirculation of biomass to the reactor, this means that the biomass does not depend on the final separation of the sludge, avoiding common problems in conventional activated sludge processes related to the sediment ability of the sludge (filamentous bulking, etc.)
- The operation and control of this type of process are simple since a knowledge of the biology of the process is not required, it is only necessary to keep the equipment working mechanically since the system maintains the biomass in the reactor until it is detached from the support.
MEMBRANE TECHNOLOGY (MBR)
The use of MBR technology in wastewater treatment has allowed the development of solutions for the reuse of water in urban, agricultural, irrigation, and other industrial uses.
- Possibility of reusing treated water, thanks to the high quality of its effluent.
- Exhibit high waste removal efficiency.
- Ability to remove various pollutants such as bacteria, nitrogen, and other suspended solid waste.
- It takes up less space than other types of plants.
- Produces less sludge volume
Membrane technologies are generically known for those wastewater treatments that use membranes as a filtering element that allows water to pass through while retaining suspended solids and other substances. Membrane Biological Reactors (MBR) combine biological processes and membrane technology, thus being an activated sludge treatment whose secondary decanter is replaced by a system for separating solids and liquids using membranes.
MBR technology is based on a simple filtration procedure through a membrane, whose porosity will vary in degree depending on the type of water to be treated and the process chosen. The membranes can be organic or mineral and function as a selective separation barrier, allowing water to pass through on one side, and solid substances and residues are retained on the other side.