Aqwise - Wise Water Technologies Ltd. is a world leader in the development and implementation of innovative wastewater treatment solutions for the industrial and municipal markets.Aqwise`s family of solutions increases BOD and nutrient removal capacity in wastewater treatment plants, offering enhanced utilization of existing reactors and unique efficiencies in the implementation of new ones. From process design through project supervision and all the way to full turn-key and financing solutions, Aqwise provides wastewater treatment professionals with a variety of solutions for every need.
- Business Type:
- Industry Type:
- Water and Wastewater - Water Treatment
- Market Focus:
- Globally (various continents)
- Year Founded:
- $10,000,000 US - $100,000,000 US
Aqwise - Wise Water Technologies Ltd. is a world leader in the development and implementation of innovative wastewater treatment solutions for the industrial and municipal markets.
Aqwise's family of solutions increases BOD and nutrient removal capacity in wastewater treatment plants, offering enhanced utilization of existing reactors and unique efficiencies in the implementation of new ones. From process design through project supervision and all the way to full turn-key and financing solutions, Aqwise provides wastewater treatment professionals with a variety of solutions for every need.
Aqwise's proprietary AGAR (Attached Growth Airlift Reactor) technology is a result of more than a decade of intensive multi-disciplinary research and development. Integrating Fixed Film and Suspended Growth technologies, it is considered as the 'next-generation' in biological treatment methods. The AGAR technology combines a unique fully open and fully protected biomass carrier with a highly efficient aeration and mixing design. This results in superior effective surface area for biomass growth and optimal oxygen transfer efficiency.
The advanced wastewater treatment technologies offered by Aqwise address contemporary needs for cost-effective wastewater treatment technologies.
The patented AGAR Process (Attached Growth Airlift Reactor), is the successful result of more than a decade of intensive research and development. It is a fixed biofilm moving bed process, utilizing suspended biomass carriers with extended surface area for biofilm growth, along with carefully designed reactor hydraulics.
Implementation of the AGAR Process in an existing plant, will allow the plant to increase its treatment capacity, as well as improve its nutrient removal capabilities, without additional tankage. The AGAR process, therefore, reduces the cost of upgrading, the project duration, and the area required for additional reactors.
The AGAR Process is successfully implemented for both organic carbon and nutrient removal.
It is suitable for municipal, agricultural and industrial wastewater treatment plants.
The flexibility of the AGAR process makes it a cost effective solution for the construction of new plants as well as the upgrading of existing wastewater treatment plants.
The AGARProcess can be implemented in a variety of configurations, depending on process requirements, site-specific constraints, etc.
A View Inside AGAR Nitrification/De-Nitrification process
- AGAR mixing pattern, featuring airlift driven risers and down-comers.
- Fine or coarse bubble aeration system.
- Non-clogging wedge wire screens, retaining the biomass carriers in the reactor.
- Aqwise Biomass Carriers, suspended in the aerobic zones of the reactor.
- Aqwise Carrier Barrier, preventing back-flow of biomass carriers and air-bubbles into the anoxic reactor.
- Stage partitions, creating cascading reactors with optimal reaction rate and specialized biomass inoculation.
- Mechanically mixed De-Nitrification reactor.
- Nitrification reactor filled with AqWise Biomass Carriers.
Lower capital and operation costs than conventional alternatives.
Avoids infrastructure development required for additional tankage.
The AGAR process allows gradual, multi-step, plant expansion, by gradual addition of Biomass Carriers: when population growth forecasts are uncertain, or manufacturing considerations required changes in wastewater treatment capacity, purchasing and introducing the carriers into the process can be done at very short notice, allowing expenditure to meet extremely accurate needs (rather than investing in basins and equipment which may be utilized only far in the future).
The duration of a retrofit project and reactor shut-down are considerably shorter, compared to construction of additional tankage.
the life expectancy of Biomass carriers exceeds 20 years, even under the intensive mixing conditions of the AGAR® reactor. The carriers have a heavy-duty structure for durable service.
Toxic upsets and hydraulic wash out events never affect the entire microbial population in the bio-film, thus process recovery is fast and smooth.
The AGAR process allows the use of either fine or coarse bubble aeration systems.
The AGAR process enables quantitative nitrification even at a low sludge age of the activated sludge, by holding a separate population on the biomass carriers.
Low temperature nitrification
A biofilm rich with Autotrophs allows stable nitrification even at low temperatures.
Free of odor problems
Intensive airlift mixing of the biological reactor, prevents reactor-originated odors.
Improved sludge quality
Nitrification in the AGAR process occurs at low suspended-sludge age, resulting in better sludge settling properties.
The AGAR process can fit into most existing activated sludge reactors. It may also be applied as a roughing filter for pre-treatment, or a post treatment polishing reactor.
Intensive media mixing within the reactor, coupled with the unique 'fully open - fully protected' biomass carrier design, eliminates the possibility of carrier clogging.
Unique Features of the AGAR Process
The 'Fully Open – Fully Protected' Aqwise Biomass Carrier
The 'Fully Open – Fully Protected' biomass carrier is specially designed to protect the biofilm against abrasion and shear, without compromising the mass transfer efficiency. The Biomass Carrier can be produced from virgin or recycled High Density PolyEthylene (HDPE).
Advanced Process Design and Simulation Tools
The advanced AGAR process design software, allows accurate modeling of all process configurations.
Precisely Engineered Mixing of the Biomass Carriers
The AGAR hydraulic design, a product of over a decade of intensive research and development, is based on a field proven analytical model, fully guaranteed for complete, intensive mixing of the biomass carriers within the reactor.
Reliable Means for Media Retention
Efficient non-clogging 'wedge wire' screens, allow reliable retention of the biomass carriers in the reactor.
Sophisticated municipal wastewater treatment is already the norm in the developed world, and is becoming widespread in developing nations as well. However, two main problems pose a growing challenge to existing wastewater treatment plants:
- Rapid urbanization and growing populations worldwide often cause unforeseen growth in the quantities of wastewater to be treated by existing facilities
- Increasingly stringent effluent requirements require plants to remove pollutants (especially nutrients) which were not necessarily considered in the original plant design.
In many cases, existing treatment systems are either intrinsically unable to meet these two challenges (for example, extensive lagoon systems), or require addition of reactors and other process volumes which call for expensive civil works and space which may not be available in the existing plant location.
The Aqwise AGAR® process offers a simple, cost-effective solution for both of these problems, and allows municipal plants to both increase their treatment capacity and upgrade the effluent quality with minimal civil works and little or no added treatment volume. The AGAR® process can be installed within an existing intensive treatment process (such as the activated sludge process), added to an extensive pond or aerated lagoon system, or designed and constructed as a stand-alone wastewater treatment plant in a number of configurations, depending on local conditions and requirements.
The AGAR® process is a flexible process, which can be applied in a number of main plant configurations according to existing conditions and plant requirements. Once the desired process configuration has been decided upon and the required civil and electromechanical works completed, Aqwise Biomass Carriers are introduced into the tanks in a quantity calculated for the required loads. This offers one of the AGAR® process’ strongest advantages: Additional increases in treatment capacity can be achieved simply and economically simply by adding more plastic carriers to the process. The basic configurations applied in municipal wastewater treatment are:
- Moving Bed Bio Reactor (MBBR) configuration: In this configuration, the wastewater is treated only with Biomass carriers, or in other words, there is no suspended biomass (such as the activated sludge Mixed Liquor) involved. As a result, the process configuration can be extremely simple – from a once-through flow with no recycles, meant for carbonaceous BOD removal only, and followed by a solids removal mechanism (such as a clarifier, DAF unit, etc,) to a sophisticated process with internal recycles, designed for extensive nutrient removal. In both cases there is no need for RAS recycle from the clarifiers, and solids handling units can be much smaller and more economical.
- Fixed Film Activated Sludge Treatment (FFAST) configuration: In this configuration, a roughing filter (see previous paragraph) is added before a conventional activated sludge system. The roughing filter serves to greatly reduce dissolved pollutant (BOD) concentrations, thereby allowing a smaller downstream unit to achieve greater treatment goals.
- Integrated Fixed-film Activated Sludge (IFAS) configuration: In this process, biomass carriers are introduced into the activated sludge system, in locations determined during process design. This configuration is perfectly suited for enhanced nitrogen removal, as the fixed biomass, when competing with suspended biomass (MLSS), tends to develop very high concentrations of nitrifying populations, thereby dramatically improving nitrogen removal capabilities.
- The AGAR® Roughing Filter for Biological Nutrient Removal (RF-BNR) configuration offers a treatment process based on a bio-film which provides organic carbon removal, followed by nitrification and de-nitrification, without circulation of activated sludge. Denitrification occurs in both pre-denitrification reactor, and in an innovative, patent pending, fixed/moving bed reactor in which intensive endogenous denitrification occurs.
Introducing the AGAR process to your municipal wastewater treatment needs offers the following benefits:
- Minimal or no additional reactor volume required. In tight locations, where proximity to existing neighborhoods or other space limitations exist, the AGAR process offers one of the only methods for increasing plant treatment capacity, as well as effluent quality upgrade.
- Minimal change to plant operations: Operation of the AGAR process blends in with traditional activated sludge operation, as it fits into the existing plant configuration. Thought the plant process is significantly upgraded, the operator does not need to learn a completely new technology, and Operation and Maintenance activities are barely changed.
- Minimal interference during the upgrade: As retrofit changes in the physical layout of the plant are minimal, the process can be introduced into the plant with very little interference and upset to normal plant operations.
- Staged implementation: Once the (minimal) infrastructure changes required for the AGAR process are completed, the only parameter defining treatment capacity is the volume of Biomass Carriers inside the basins. Carriers can be added on demand, and within hours, the plant capacity is expanded proportionally. This allows both timely adaptation to changing requirements (either increase in wastewater quantities or improved effluent requirements), and Just In Time expenditure, so that investment in the upgrade is done only when needed, not years ahead of time.
- Withstanding of Toxic or Shock loads of industrial wastewater: In configurations where the Biomass Carriers precede a conventional system, they serve as a buffer for extreme fluctuations in wastewater quality: If incoming wastewater includes a toxic spill, or a surge in organic load (both usually due to industrial wastewater), the fixed-film biomass can absorb and significantly attenuate the effects, thereby protecting downstream processes and allowing rapid return to normal process operation. Due to the nature of the fixed biomass and its acclimatization to fixed spatial conditions (unlike suspended biomass, fixed biomass constantly “feels” similar, usually highly loaded, process conditions), recovery after shocks is quicker and more complete than in the suspended biomass.
Most modern industrial production processes produce wastewater, which need to be treated according to the final discharge possibilities. Therefore, industrial wastewater treatment poses a double challenge:
Discharge of industrial wastewater to the environment or to municipal collection systems requires industry-specific treatment technologies, in order to minimize the environmental impact of problematic industrial residues on the receiving system. These discharge requirements are becoming more stringent, as the detrimental impact of more and more production by-products become evident.
In many cases, correct treatment processes can enable in-plant reuse of the treated effluent, thereby reducing production costs and optimizing plant processes.
In addition, water-intensive industries (such as pulp and paper, food processing, textile, etc.) are often dependent on wastewater treatment capacities for the expansion of production; in other words, the wastewater treatment system may be a bottleneck limiting production expansion.
The AGAR® process, offering the capability for treatment of a wide range of industrial wastewaters, in a flexible system requiring a small footprint with simple expansion capabilities, is therefore an extremely attractive option for industrial wastewater treatment.
The AGAR® process can treat biologically-degradable industrial wastewater in a number of process configurations, as detailed below. The process can be designed as a stand-alone sole treatment process, can be installed together with physico-chemical treatment units (before or after the AGAR® unit), or can be retrofitted into a biological treatment unit in order to allow higher loading rates and/or lower effluent pollutant concentrations.
The two basic configurations applied in industrial wastewater treatment are:
- Roughing Filter (RF) (also called: Moving Bed Biofilm Reactor - MBBR) configuration: In this configuration, the wastewater is treated only with Biomass carriers, or in other words, there is no suspended biomass (such as the activated sludge Mixed Liquor) involved. As a result, the process configuration can be extremely simple –a once-through flow with no recycles, meant for high-rate carbonaceous BOD removal, followed by a solids removal mechanism (such as a clarifier, DAF unit, etc,). In this configuration there is no need for RAS recycle from the clarifiers, and solids handling units are much smaller and more economical than conventional AS units.
- Fixed Film Activated Sludge Treatment (FFAST) configuration: In this configuration, a roughing filter (see previous paragraph) is added before a conventional activated sludge system, or any existing biological treatment system (RBC, TF, etc.). The roughing filter serves to greatly reduce dissolved pollutant (BOD) concentrations, thereby allowing a smaller downstream unit to achieve greater treatment goals, or conversely, allows greater loads and flows to be treated by the existing system.
Introducing the AGAR® process to your industrial wastewater treatment needs offers the following benefits:
- Minimal reactor volume required for retrofits. In tight locations, where proximity to existing neighborhoods or other space limitations exist, the AGAR® process offers one of the only methods for significantly increasing plant treatment capacity (both wastewater flows and organic loads), thereby allowing increase in production, with very little enlargement of the existing biological system.
- Implementation together with physico-chemical treatment units. Many industries have physico-chemical treatment units as their only wastewater treatment system. Adding the AGAR® process in-line with the existing physico-chemical units allows significant improvement in effluent quality, without significantly increasing the size of the entire treatment unit.
- Future implementation: Once the (minimal) infrastructure constructions required for the AGAR® process are complete, onr of the main parameters defining treatment capacity is the volume of Biomass Carriers inside the basins. Carriers can be added on demand, and within hours, the plant capacity is expanded proportionally. This allows both timely adaptation to changing requirements (such as seasonal fluctuations in wastewater quantities), and Just In Time expenditure, so that investment in the upgrade is done only when needed, not years ahead of time.
In aquaculture, limiting nitrogen levels in recycled pond effluent is vital to the survival of the stock. Elevated levels of ammonium or nitrite can pose an acute health risk to fish and other aquatic organisms.
In addition, worldwise water shortage, regulatory demand and quality requirements are forcing the aquaculture industry to become more mechanized. Water from fishponds must be recycled for continued use with a particular attention to nutrient removal.
The AGAR® - FishWise process is uniquely suited for treating intensive and dependable nitrogen removal.
The AGAR - FishWise System is a combination of:
- Nitrifing AGAR Roughing Filter Reactor in which the AqWise Biomass Carriers develop a highly active nitrifying biomass population, ensuring consistently low ammonia levels in the effluent produced.
- AqWise upflow Carrier-Filter, based on AqWise Media, design to work on very high flow with minimum head-lose and maximum TSS removal, ensure that the level of TSS returned to the fishpond is very low.
- A denitrification unit can be adding to the process based on the filter back-washed sludge. Recommended only in cases were alkalinity is very low.
AGAR FishWise system improves the profitability of your farm::
- Dramatic increase in fish quantity, doubling and even tripling product amount in the same size pond
- Sustaining high quality water in the fish pond by efficient removal of Ammonia and Suspended Solids
- Reducing fresh water requirement to a level in which water exchange of the pond is only once every 10 days
- Maintaining a high rate fish growth even at low ambient temperatures, by a closed water loop heating system
- Savings in energy consumption while increasing efficient Oxygen loading and CO2 removal
- Maintaining high rate fish growth also for sensitive species as Striped Bass and European Seabass
- Competitive upgrade package, tailor-made according to the growers specific needs
- Full flexibility in design while taking advantage of the existing infrastructure
- Simple User Friendly system both in Operation and Maintenance
- Fulfilling the Environmental norms and regulations