Water Waste Aeration
Tube and Plate settler clarifiers are highly demanded solutions that provide efficiency in producing high quality water with minimum environmental footprint. Aside from the long-lasting built quality, Tube and Plate Settlers have higher loading rates and therefore are able to produce large amounts of clean water without the need for upgrading basin sizes.
Easily customizable based on your requirements and available space, Tube and Plate settler clarifiers are available in various materials to choose from according to water & wastewater conditions, from FRP, PVC, ABS to Stainless Steel (SS304/SS316).
Widely known as the most efficient granular filtration medium in the market, MicroSep filter media is a superior pre-treatment system from UWT that is also compatible with Sand and/or MMF filtration systems.
MicroSep is precisely engineered to enhance industrial and municipal water filtration systems with its optimum mechanical performance. For example, after years of research, we have found that the common MMF filters used for Anthracite, Sand and Garnet filter down to the 10-20 micron range without any flocculation aid. MicroSep, however, filters out more than 95% of the 1-micron particles without any flocculation aid.
In other words, MicroSep offers 10x better filtration, enabling you to meet the SDI <5.0 requirement for RO pre-treatment systems, hence making it one of the best replacements for conventional sand and MMF filters.
Leveraging a membrane filtration process similar to Reverse Osmosis, Ultrafiltration (UF) systems use hydrostatic pressure to force water through a semipermeable membrane.
UF systems have recently gained popularity thanks to its ability to effectively filter out suspended solids, bacteria, viruses, endotoxins and other pathogens using 0.02-0.04-micron membrane pore sizes, resulting in highly pure water with low silt density (SDI) for thousands of municipal, industrial, and commercial applications worldwide.
This nature of the UF systems, especially when equipped with ZeeWeed hollow-fiber membranes from UWT, makes it the best choice for drinking water, pretreatment and wastewater recycling applications.
The heavy duty ZeeWeed 1000 membranes are able to directly filter lake or ground water, settled water, compatible with reverse osmosis systems, and act as a tertiary filtration of wastewater to remove phosphor and reuse water.
This nature of the UF systems, especially with ZeeWeed hollow-fiber membranes from UWT, makes it the best choice for drinking water, (RO) pretreatment and wastewater recycling applications.
ZeeWeed 1500 is used by clients all around the world for drinking water systems, tertiary filtrations and pre-treatment for brackish and seawater desalination. With an SDI of <3.0, this outside-in feed, hollow-fiber, PVDF ultrafiltration membrane specialises in delivering the highest quality effluent water consistently.
A versatile product, the ZeeWeed 1500 RMS (Rackless Module System) is a simple, affordable and space-saving integrated header solution fit for all applications.
With low fouling tendency, SUEZ’s ZW 700B is essentially a inside-out ultrafiltration (UF) membranes ZW700B using SevenBore* fiber technology on a modified PES (polyethersulphone). Convenience is taken to a new level with ZeeWeed 700B, as its membrane is 10x stronger and easier to clean compared to a single bore UF module thanks to its in-to-out configuration.
This cutting age design makes ZW700B able to produce superior water quality of SDI <3.0 on average without any fibre breakage during its recommended lifespan – record-breaking indeed!
Designed to deionize a wide range of water sources using ion-exchange resins, our ion-exchange systems produce pure water of up to 18.0 MOhms-cm.
Not only is it suitable for productions, cleanings, boiler make-ups, semiconductors and power generations, our ion-exchange systems are pre-engineered and pre-assembled to be rugged enough to withstand long-term usage, hence minimizing expensive maintenance and initial installation costs.
Hard water (water with high calcium and magnesium ion concentration) can clog cooling towers & pipes, damage boilers, heat exchangers, and other heat-related equipment.
To prevent this, water softener systems remove calcium (Ca2+) and magnesium (Mg2+) ions and exchange them with typically the harmless sodium (Na+) ions, producing what we call soft water.
2BD – TWO-BED DEIONIZATION
2BD system is highly useful when the product water quality needed is around 1 – 10 M.Ohms-cm. This is because 2BD is built with two vessels – one containing a cation-exchange resin in the hydrogen (H+) form and the other containing an anion resin in the hydroxyl (OH-) form.
D.3. SDI – SUPER DEIONIZATION
The best of two worlds, SDI system equips the 2BD system with a mixed-bed deionizers column. The single pressure vessel contains well-mixed cation-exchange resins and anion-exchange resins to remove remaining unfiltered ions. The resulting water quality therefore meets >16 M.Ohms-cm.
The Brackish Water RO units, BW-SR8 Series, are used globally in regions where clean portable water is scarce. This makes it ideal for food and beverage industries, portable drinking water, hospitals, agriculture, hotels & resorts, water bottling & ice making, pharmaceuticals, spotless car wash systems and more.
Designed to meet international quality standards, our land-based systems are built into 20 and 40-food containers and ready to be operated the moment they arrive at your facility, complete with pre- and post-treatment systems, pumps, piping and system controls.
Our RO systems are built locally in Singapore and Indonesia and have been trusted by internationally reputable companies in various continents.
When it comes to producing quality fresh water from sea water, the SW-SR8 series stands as one of the best options, equipped with the latest energy saving reverse osmosis technology to ensure an economical supply of high quality portable water, especially in water-stressed countries where sea water proves to be the most abundant source.
Built into 20- and 40-feet containers, our systems have high mobility and fast installation time without compromising its international quality standards.
Nanofiltration is a membrane-based filtration system with a higher range of pore sizes, making it suitable for the following uses:
As an industry-standard Nanofiltration system, our Nano-SD is often used for water-softening and the removal of disinfection by-products (or micro-pollutants) like natural organic matter and synthetic organic matter filtered from groundwater, surface water and recycled wastewater. Nano-SD Series comes with the following performance:
Nano-SD membranes are widely used for wastewater recycling or for softening of raw water thanks to its chlorine-resistant (Free chlorine residual up to 1.0 mg/L) property along with a high bio-fouling tendency.
Specifically developed to remove sulphate from seawater well-injection application, the Nano-SW Nf membranes feature pore size of 300-Dan MWCO to filter almost all suspended matters, from particles, colloidal silica, to bacterial matters. Furthermore, Nano-SW Series is the ultimate filtration system due to the following features:
Nano- HF Series
Durable yet easy to maintain, the hollow-fiber based Nano-HF series removes hardy micro-pollutants from hormones, pesticides and medicines by simply combining the advantages of a low fouling hollow-fiber configuration with the ability to remove organics and salinity, all without the need of much pre-treatment.
Designed to remove micro-pollutants and organics from natural water and recycled wastewater, Nano-HF membranes also help with colour removal, softening, recovery of cleaning solutions (NaOH recycling) and partial desalination for industrial, process and municipal applications.
With that in mind, this system is perfect for wastewater re-use applications and for turning surface water into drinking water.
EDI (electrodeionization) technology removes ionizable aqueous species such as carbon dioxide, silica, ammonia and boron, from your water sources. By achieving 97% water recovery, EDI systems relies only on electricity without using any chemicals, making it ideal for applications like power generation for boiler feed and NOx control, semiconductors, microelectronics, food and beverage, and pharmaceuticals.
E-Cell uses electricity, ion exchange membranes and resin to deionize water while removing dissolved ions (impurities). E-Cell system removes the need for chemical treatments thanks to its ability to apply reverse osmosis (RO) with up to 18 M.Ohm-cm resistivity.
RO DI System
RO DI system is a hybrid that combines the reverse osmosis (RO) system and an E-Cell (EDI) system into one single skid with one controller. This in turn offers you simplicity in installation, operations, and 40% lower footprint.
This 2-in-1 system offers the following Features:
Alleviates bulk acid and caustic environment, health & safety concerns regarding when replacing an aging ion exchange system
A Moving Bed Bioreactor (MBBR) is a biofilm variation of the activated wastewater treatment process. This cost-effective wastewater treatment solution is highly useful where available treatment plot area is limited and can enhance capacity and end-product quality without additional footprint.
In the Moving Bed Bioreactor, the biological treatment process introduces a more robust microbial environment to breakdown the nutrients. A moving media, typically a floating plastic substrate colonized by a community of bacteria (biofilm) is introduced in the reactor. These bio-carriers circulate with the aeration in a random motion, ensuring excellent oxygen and substrate transfer to the biomass, enhancing biological nitrogen removal, and improving effluent quality.
Highly used in municipal and industrial wastewater treatments, the membrane bioreactor (MBR) combines microfiltration or ultrafiltration with an activated sludge process (another biological wastewater treatment process), and comes in both submerged as well as external (side stream) modules that can be chosen according to requirements and site conditions.
In the Sub-MBR series, the submerged UF element is installed in either the main bioreactor vessel or in a separate tank. Our submerged MBR series is based on ZeeWeed hollow fiber filtration membrane is used globally in water and wastewater applications and is manufactured in Hungary and China.
The TMF-MBR series uses a series of Tubular Membrane Filter (TMF) elements installed externally to the activated sludge reactor. The TMF-MBRs are ideal for the treatment of wastewater streams with high concentrations of organics, solids, fat, oil, and grease. The membranes retain the biomass and mixed liquor suspended solids (MLSS) within the bioreactor, thus producing effluent that is free of particles, bacteria and viruses.
The TMF-MBR series are available in the standard MBR module as well as the anaerobic-MBR process that is suited for high COD wastewater and for generation of bio-gas that can be recovered for reuse after some sour-gas and CO2 reduction treatments.
Considered by UWT’s clients as an ‘out of the box’ solution, the external filtration membranes in the TMF recovery system are positioned outside of the feed tank, utilizing crossflow velocity to keep the membranes working at optimal conditions.
This helps remove any remaining suspended solids, thus making the system ideal for the separation of effluent streams. In certain applications, they can also enable the recovery of valuable materials in waste streams (such as indigo dyes, PVA, precious metals and proteins), and are also widely used in the following industries:
Though critical, the aeration process in a typical wastewater treatment system also proves to be the most expensive, with numerous control parameters to consider and maintain, from DO (dissolved oxygen) level, excessive loading rates, to design flaws.
UWT goes back to basics to make wastewater aeration simpler, more efficient, effective, and economical with the Ultrafine Aeration series. As a more streamlined system, the Ultrafine Aeration system produces predictable, thorough aeration without the use of troublesome, expensive, blowers or diffusers, while allowing oxygen to dissolve faster without less unnecessary energy. The benefits of installing this system include:
AirFlex Ultrafine Diffuser
The easy-to-install AirFlex Ultrafine Diffuser is perfect for lagoon and ponds aeration system, and as one of the best semi-flexible fine bubble systems in the market, it is 5 times more efficient than the average coarse bubble diffusers thanks to a smaller average bubble size of 1 mm.
This low-maintenance system can be loosely installed in in tanks, plastic lined reservoirs or lagoons by a circular ring main pipe connected to a low-pressure roots or rotary vane air blower, and are equipped with integral ballast and non-return valve and will stay on the bottom without the need of any air pipe or base skids. Convenience at its best!
M-Nano Aeration System
M-Nano Diffuser is an unmatched gas (O2/O3/N2) diffusing nozzle that produces Micro-NANO bubbles to maximise gas dissolution efficiency and mix capabilities.
This trouble-free diffuser has no moving parts and will produce a very high gas transfer efficiency for any aeration system. Complete with an O2 generator, mixing pump, the M-Nano Diffuser will increase yields while keeping aeration cost to the minimum.
So how does it work? Urban and industrial plants require a maintained level of dissolved oxygen (DO) to allow biomass to metabolise pollutants. To maintain the required oxygen concentration in wastewater, bubbles of air (or pure oxygen) are injected into the biological treatment tank by powerful aerators, usually root or turbine blowers. However, conventional aerators are inefficient and thus consume large amounts of energy to maintain the required levels of DO.
M-Nano Aeration system on the other hand, produces bubbles in micro and nanometres in diameter and therefore have superior properties to normal bubbles. As a result, M-Nano Aeration System can introduce much larger quantities of stable DO into the water, thus dramatically increasing oxygen transfer efficiency (OTE), and consequently reducing the overall plant’s energy consumption.
Essentially, a biofilm is any group of microorganisms in which cells stick to each other and can adhere to a surface. These bacteria then produce a matrix of extracellular polymeric substance (EPS), often referred to as slime, covering the surface completely.
Many buildings and industries depend on various vendors to treat their cooling water to ensure optimum and effective HVAC systems. However, in an HVAC system, a biofilm layer of just 0.1 mm can increase the electricity cost by a factor of 4 (four) compared to a system containing the same thickness of calcium carbonate scale. In addition, biofilm deposits on metal surfaces promote corrosion of the metal. This is termed “microbially induced corrosion” (MIC), biocorrosion, or “under-deposit corrosion”. This means regular control and removal of biofilm is extremely important for the industrial water treatment industry.
Because of its highly complex maintenance requirements, the conventional HVAC system is increasingly equipped with the ALVIM Biofilm sensor, a real-time, continuous biofilm monitoring sensor that can help you with the following tasks:
ALVIM Biofilm Sensors have been already used, with highly satisfactory results, in several industrial fields (cooling water systems, industrial water treatment, desalination, food processing, paper mills, etc), including large international companies.