As a comprehensive provider of professional and technical solutions for environmental technology and management, Koastal Eco Industries gives clients a variety of services for optimum results as follows:
Invest – Build – Operate –Tranfer
Operation – System Maintenance
Upgrade – Expand – Optimize the current system
With the accessibility and deep research in the field of technology for water and wastewater treatment in advanced countries in the world, we have successfully applied a lot of this type of technology for hundreds of projects for water and wastewater treatment in the Vietnam and other countries in the region, some technologies were applied as follows:
- Physiochemical treatment technologies
- The biological treatment technology
- Higher processing technology
- Water treatment technology
- Processing technology of traditional physical chemistry: Colloid convergence-creating the cotton-gravity Sedimentation
Waste water is chemical magnet concentrations and appropriate dosage (in stitch Glue convergence-creating cotton) through the result Jartest to lose the stability of colloidal particles in wastewater and at this time they will interact with each other, the formation of the clusters of large condensate cotton spinning, worried. This condensate cotton floor hot (At stitch to gravity) and is separated from the sewage through the difference in density. This technology is often applied to color, reduce the amount of residue suspended solids, some heavy metals as well as part of organic pollutants in wastewater
The scale applied in Vietnam was : 8000 m3/day.
Gravity sedimentation tank at the stage of physical chemistry process
- Physiochemical treatment technologies: Glue the convergence- Flocculation – Dissolved Floatation
Similar physiochemical treatment technologies above, following the process reacts with chemicals in the glue and stitch to create cotton, instead of being led through the stitches to gravity, compressed air with water at high pressure atmosphere couple, then reduce pressure down to atmospheric pressure, dissolved gases separated from waste water into the gas-dust. The gas-dust will stick sticking to the particles (solids) and with sufficient buoyancy will push the particles cling to stick to air bubbles to the surface on dissolved flotation of agricultural and where they will be put into the foam skimmed the surface of separation from sewage.
In sewage treatment, the process of froth flotation can used to remove grease, residue suspended solids, surface active substances, solid forms have low density as pulp, rubber etc.
The scale was applied in Vietnam: 6000 m3/day.
- Upflow anaerobic sludge blanket (UASB)
Microbial populations (mostly bacteria) will decompose the organic matter in anaerobic conditions (absence of oxygen atmosphere) with the end product which is a gas mixture composed of: CH4, CO2, N2, H2 … Wastewater containing organic substances pollution concentrations are likely highly biodegradable and of low solids composition.
The scale applied in Vietnam was: 2.800 m3 / day and 7.000 kg COD / day.
UASB anaerobic treatment tanks of food industry wastewater
- Technology anoxic biological treatment (Anoxic)
Microorganisms in anoxic tank are likely to eliminate Nitrogen from nitrate metabolism into free Nitrogen. This additional amount of nitrate from the aeration tank (located after an anoxic tank). The sewage after nitrogen reduction will continue to be processed in the aerobic tank combined nitrate chemical.
Waste water contains highly concentrations of Nitrogen pollution.
The scale applied in Vietnam was: 10.000 m3/ day and 1.500 kg N-NO3–/day.
Gas lack of biological treatment tank of wastewater of rubber
- Technology aerobic biological treatment (Aerotank / SBR)
In conditions of continuous gas blower Aeotank or interrupted batch SBR, self-supporting populations of aerobic microorganisms will sum up the phosphorus and nitrogen, decomposition of organic compounds in wastewater in order to synthesize, maintain cell and transport energy for metabolic processing they form the simple inorganic compounds like CO2 and H2O
Wastewater organic matter capable of bio-degradation.
The scale applied in Vietnam was: 10.000 m3/day và 5.040 kg BOD/day.
• Biological treatment technology of intensive handling of nutrients (BNR)
Biological treatment process consistently uses many different floras: anaerobic, aerobic, and anoxic to sewage treatment. Micro-organisms in organic oxidation at high speed reduces the strong concentration of organic matter, the process is particularly significant decrease concentrations of nitrogen and Phosphorus in wastewater.
Wastewater organic matter, nutrients are capable of biodegradation.
The scale applied in Vietnam was 2.500 m3/day
Badenpho technology of rubber wastewater
- • Biological treatment technology for advanced portable (MBBR)
In aerobic conditions, bio – materials have a graet exposure to the environment for the microorganisms to stick and survive. Thanks to constant blower bio – materials hover in wastewater. On the surface, there are 03 layers of bio-film: anaerobic layer, anoxic layer, aerobic layer. Thanks to the 03 layers of bio – film, MBBR tank has an effective handling of nitrogen, phosphorus and BOD is much higher than an ordinary biology tank.
Wastewater organic matter capable of biodegradation.
The scale applied in Vietnam was 3.000 m3/day
MBBR tank in textile wastewater treatment
- • Multistage filtration system (MTF)
Layout system is arranged of multi-layer filter materials with different dimensions. The arrangement, stratified layers of filtering materials enable the removal of large-sized dirt the first filter material, the small size dirt is retained in the filter material in greater depth so effective removal as well as yhe turbidity also will be higher.
The requirement of Waste water quality achieves highly quality
The scale applied in Vietnam was: 1500 m3/day.
Multilayer filter in the waste water treatment in industrial zones
- Advanced oxidation systems (AOP)
A brief description of the principle: This system using the agent is a combination of H2O2 and iron salts Fe 2+ as oxidizing agents, transfer difficult biodegradation of potentially biodegradable agents or can mineralization completely organic matter to CO2, water, inorganic ions.
Wastewater organic matter with little or no biodegradation, toxic organic substances.
The scale applied in Vietnam was: 1500 m3 / day.
Clusters of advanced oxidation process in textile wastewater treatment
- Ultrafiltration Membrane Filtration System (UF)
Ultrafiltration membrane to remove molecules whose size is larger than the hole to filter out of the water. Under the pressure of not more than 2.5 bar, water, mineral salts and molecules/ions under filter holes (0.1-0.005 microns) will cross the membrane with ease. The larger molecules, viruses, bacteria will be hold and exhaust out.
Wastewater treatment contains oil for the purpose of recovery of oil and grease in the wastewater, desalination of sea water, salt water filtration.
The scale applied in Vietnam was: 25 m3/hr.
UF filtration systems to reuse waste water after handling
- Water treatment technology from surface water
A brief description of the principle: Surface water is pumped to draw water into the flocculation flocculation and sedimentation to remove impurities and suspended in river water. The water is continuing to lead through rough filtration column to remove suspended solids before the water flows into the filter column of sand, charcoal and ODM has the effect of eliminating the smell, the color, the adsorption of toxins… and raising the pH of water. Glass filtration equipment with micro filtration membranes will retain the micrometer sized impurities to completely eliminate the residue over 5 micrometers. The water continues to be high pressure pumped through membranes RO with high pressure resistant and have slits 0.0001 micrometer,the membrane used to completely eliminate solids, gases dissolved in water, the ions of metals, heavy metals, microorganisms, bacteria, organic matter to make up completely pure water, but does not alter the water’s physical properties.
Surface water treatement into purified water, feedwater production for the food industry, pharmaceutical products, soft drinks, beer …
The scale applied successfully was: 420 m3/hr.
Clean water treatment technology from ground water
A brief description of the principle: Groundwater is pumped to drawwater into the tower oxidation, with employment transient forced to expel CO2, raising the pH to the water and provide dissolved oxygen carried out the oxidation of Fe2 + and Mn2 + in the form of a precipitate soluble Fe3 + and MN4 + and will be removed in the clarifier. Water continues to lead through the column filtration and removes suspended solids before the water column into the sand filter, activated carbon and ODM have the effect of eliminating odor, color, adsorption of toxins, …As for the water hardness more column ion is ineeded to exchange filters, namely the exchange of Na + ions between the resin and the ions Ca2 +, Mg2 + in the water. Glass filtration equipment with micro filtration membranes will retain the micrometer sized impurities to completely eliminate the residue over 5 micrometers. The water continues to be high pressure pumped through membranes RO with high pressure resistant and have slits 0.0001 micrometer, the membrane to completely eliminate solids, gases dissolved in water, the ions of metals, heavy metals, microorganisms, bacteria, organic matter makes up completely pure water, but does not alter the water’s physical properties.
The underground water into purified water, water for production for the food industry, pharmaceutical products, soft drinks, beer…
The scale applied in Vietnam was: 150 m3/hr.
Lamella Clarifier in water supply treatment system