Aquanza provides quality services to Industries and Municipalities and have successfully completed projects around the world. We got excellent domain experts to handle projects across various verticals. Our organization has expert structural engineers, process engineers, and electro-mechanical engineers with more than 20 years of experience across various industries. We provide long term economic solutions with quality as our main focus
We provide wide variety of energy efficient water & waste water solutions including solutions for Recycle and reuse of treated wastewater. Aquanza has the experience and expertise to deliver solutions for water treatment needs and rural water and waste solutions.
Conventional Activated Sludge Process
AQUANZA’s high efficiency aerobic activated sludge systems incorporate fine bubble diffusers for aeration and most are designed with a removable headers concept. All of our systems have been able to produce treated water with very low organic pollutant (BOD, COD, etc.) concentrations, well within what is required to meet the client’s discharge specifications. Many of these installations have been designed as extended aeration systems.
Extended aeration is a type of activated sludge process with long aerobic detention time to generate overall less excess sludge and no primary settling. These systems are designed for a low F:M ratio (0.1 kg BOD/kg MLSS-day) and a high SRT (20 – 30 days). Extended aeration process has many benefits, including easy operation, better at handling organic loading and flow fluctuations, odor free systems and relatively low sludge yield.
These systems have been very useful for various municipalities and industries such as distilleries, breweries, yeast, pharmaceuticals, textiles, soft drinks, food, petrochemicals, chemicals, paper, etc.
MEMBRANE BIOREACTOR SYSTEM – AQUANZA ® BIOLOGICAL MBR SYSTEMS
Industry-leading design that delivers superior performance
The Membrane Bioreactor System - AQUANZA® BIOLOGICAL MBR is a unique wastewater treatment process that combines an activated sludge biological treatment process with an innovative membrane filtration system. AQUANZA‘s continued focus on innovation has created an MBR system that provides superior management of the membrane environment, stable and flexible operation, and less overall maintenance, providing significant cost savings.
This process is well-suited to a wide range of municipal and industrial wastewater treatment applications including:
• Water reuse
• New housing developments
• Parks and resorts
• Turnkey projects
• Dependable process performance
• Low operation and maintenance costs
• Automated operation
• Reduction in energy costs by up to 40% over conventional processes
• Superior effluent quality
• Drastically reduced system footprint
• Low effluent turbidity
• Up to 90 percent bio-solids reduction
• No moving parts in the membrane air scour process
• Continuous air supply to membrane cell and rack for increased effectiveness
• Modular design; simple retrofit to existing systems
• Designed for ease of use with existing infrastructure components
AQUANZA Biological MBBR Systems incorporate a newly designed biomass carrier into a moving bed fixed-film process that provides a protected, extremely high surface area environment for bio-film growth. The systems allow capacity increases of 200% or more and ensures compliance with ever-tightening permit limits — all within existing plant footprint. AQUANZA Biological MBBR Systems are ideal for plant upgrades, retrofits or expansions of both municipal and industrial wastewater treatment plants. The technology is cost effective and reliable. It can achieve BOD to < 3.0 mg/L without adding tanks to an existing plant. The technology integrates into most existing activated sludge bioreactors, so project scope and duration is reduced. The small footprint required by the technology, and its ability to handle upset conditions also makes it a cost-effective, reliable solution for new plants.
KEY BENEFITS OF AQUANZA BIOLOGICAL MBBR SYSTEMS: Cost Effective Design and implementation efficiency ensure lower capital and operating costs than conventional alternatives. Small Footprint High-rate treatment allows for a smaller footprint than conventional processes. Flexible Design The treatment system integrates into most activated sludge bioreactors. It can also be applied as a roughing filter for pretreatment or as a post-treatment polishing bioreactor. Expandable Simple media addition allows for easy plant expansion to accommodate population growth or other needs for capacity. Stable Operation Toxic upsets and hydraulic “wash out” events do not affect the entire microbial population in the biofilm, ensuring smooth and rapid system recovery. Intensive and Low-Temperature Nitrification A separate microbial population held on the biomass carriers enables quantitative nitrification even at a low sludge age. An autotroph rich biofilm allows stable nitrification, even at low temperatures. Reliable Media Retention Efficient use of non-clogging wedge wire screens ensure reliable retention of the biomass carriers in the bioreactor. Durable Heavy duty carriers can exceed 20-year life expectancy, even under intense bioreactor mixing conditions.
BOD Removal The AQUANZA® BIOLOGICAL MBBR SYSTEMS can be configured to achieve intensive BOD removal in a very short hydraulic retention time (HRT). This solution is best suited for Increasing the BOD removal capacity of an existing plant.
SEQUENCING BATCH REACTORS (SBR)
Sequencing batch reactors treat wastewater in a batch treatment process.
Oxygen is bubbled through the wastewater to reduce biochemical oxygen demand (BOD) and chemical oxygen demand (COD), producing a high-quality effluent with a low turbidity and nitrogen levels capable of meeting high effluent quality standards. The SBR accomplishes equalization, aeration, and clarification in a timed sequence in a single reactor basin.
AQUANZA® SBR system is ideally suited for treating smaller to very higher capacities with a wide range of effluent requirements. Applications include:
• Municipal wastewater including Biological Nutrient Removal
• Water recycle & reuse
• BOD & COD reduction
• Industrial Wastewater
o Food & Beverage
o Pulp & Paper
o Petrochemical & Oil refining
o Chemical/ CPI
o Landfill/ Leachate applications
o Textile Industry
Anaerobic digestion has become an increasingly popular technology for treating wastewater. Low rate anaerobic digester systems can be used for various industries such as distilleries, breweries, pharmaceuticals, pulp & paper, citric acid, yeast, chemicals, etc. These digesters provide a large volume (hydraulic retention time: 15- 45 days), offering better process stability with consistent performance and biogas generation. BOD reductions of 80%- 95% and COD reductions 60% – 80% can be achieved, depending on the nature of the wastewater. These digesters can be constructed in a rectangular or circular above ground or below ground construction.
In absence of oxygen i.e. under anaerobic environment, bacteria decompose organic pollutants (BOD, COD, etc.) to carbon dioxide, methane and water. The biogas here is generated through a series of bio methanisation reactions. The large quantities of biogas generated have been used to replace fuel in boilers and to generate electricity in generators, offering quick returns to our clients. Benefits of this anaerobic system includes high reductions in organic load and thus less loading and power consumption in the downstream treatment process. In addition, the use of biogas as a renewable non-conventional source of energy is possible.
The Anaerobic Hybrid Digesters is a combination of an Up-flow Anaerobic Sludge Blanket (UASB) digester and an Up flow Filter (UFF) digester – the open design plastic media offers a high specific surface area and maximum void space. The bottom portion (~40%) of the AHD is maintained with an acclimatized sludge bed. The effluent is first passed through this sludge bed and is intimately mixed with highly active microorganisms in the sludge bed. As a result, the effluent receives a significant portion of its treatment in the sludge bed zone itself. The other portion of the AHD is filled with fixed media (open design plastic media) so that the effluent, after passing through the sludge blanket, passes through this media where the removal of largely soluble organics takes place. It also provides critical retention of the biological solids in the reactor. Effluent recycle pumps are provided to return a portion of the AHD effluent back to the AHD. Excess sludge is wasted from the bottom of the AHD via dedicated sludge wasting pumps. The biogas generated in the AHD will be removed by use of biogas blowers. The AHD provides consistent performance due to a high biomass inventory in the USB zone as well as biomass growth on the surface of the fill media.
An advantage that the AHD technology has over other high rate anaerobic reactors is that, due to the presence of a fixed film of biomass that grows on the plastic fill media, there is no need to develop and maintain a granular sludge. Thus, the time required to start-up and stabilize the AHD is significantly lower than other high rate anaerobic reactor technologies.
AHDs have been designed to achieve BOD and COD (organic pollutants) reductions of up to 90% and 70% respectively and have the advantage of requiring less volume. Additionally, the biogas generated has been used to replace fuel in boilers, reducing operating costs and adding value for our clients. Anaerobic Digesters application for various industries such as petrochemicals, breweries, paper, soaps & cosmetics, food, etc.
AQUANZA has the experience and expertise to deliver solutions for water treatment needs. AQUANZA has experience with surface water and ground water treatment systems as well as advanced water treatment systems for brackish water and seawater desalination.
Surface water refers to water occurring in lakes, rivers, streams, or other fresh water sources used for drinking water supplies. Due to the high cost of drinking water and the fact that water is not always available, more and more industries and municipalities use treated surface water. Normally the surface water needs to be treated before it has the required water quality. Surface water typically contains a high suspended solids content, bacteria, algae, organic matter, creating bad taste and odour. In some areas, like river estuaries, surface water can be brackish, reaching up to 8000 mg/L of salts.
Two processes are commonly used to treat surface water:
Conventional treatment including Clarification consists of (coagulation/flocculation, sedimentation, or dissolved air flotation), Sand Filtration, Activated Carbon adsorption, and disinfection.
Advanced Treatment based on Ultra filtration Technology.
Groundwater refers to any subsurface water that occurs beneath the water table in soil and other geologic forms. Groundwater from a shallow surface connected or unconfined aquifer can be contaminated with disease causing microorganisms or chemicals from surface activities. Groundwater has been a preferred source of drinking water because of the general perception that it is of higher quality, less vulnerable to contamination, and requires less intensive treatment than other types of water. In fact, Iron and manganese are secondary aesthetic contaminants in groundwater. They produce red and brown stains, giving the water the appearance of being impure. Groundwater is susceptible to contamination by iron, manganese, and arsenic found in soil and rock.
To eliminate iron and manganese using an oxidation process that precipitates these dissolved metals into particulate. The particulate can then be filtered out using UF/MF.
There are several methods for treating groundwater.
Filtration to remove particulate matter from water.
UV disinfection by ultraviolet (UV) light irradiation is effective against most bacteria, viruses and protozoa.
Chlorine disinfection is a common form of disinfection that is effective against harmful bacteria, viruses and Giardia, but has limited effect against Cryptosporidium.
Micro/Ultra filtration membrane filters (0.1 - 0.01 micron) can effectively treat water by removing sediment and bacteria. Ultrafiltration membrane filters may also remove viruses.
Reverse osmosis filters (0.001 micron) are the most sophisticated and are extremely efficient and effective for the removal of microorganisms and most residual chemicals from water.
Brackish water contains relatively high levels of dissolved salts and minerals. Depending on the location, it can range from 1,000 to 10,000ppm and high brackish is 10,000 to 15,000ppm.
Brackish water is also commonly found in natural gas and oil field exploration and drilling. Water is typically used in the petroleum extraction process, leaving behind large quantities of brackish produced water.
The treatment method of choice for brackish water is brackish water reverse osmosis. The most common uses of RO are for desalination of seawater and brackish water for potable and industrial applications. It consists of forcing water under pressure through selective membranes, which permit the passage of water molecules but not of salts or suspended materials.
Zero Liquid Discharge
AQUANZA has experience and the technology tie-ups to offer zero liquid discharge (ZLD) systems. ZLD systems, which maximize the recycle quality water produced from wastewater and discharge only solid waste as a byproduct, often include reverse osmosis (RO) followed by evaporation and crystallization of RO rejects. The energy cost for volume reduction via evaporation and crystallization is substantially higher than the energy cost of volume reduction via RO membranes. Thus, in order to reduce the life cycle cost of a ZLD system, maximizing recovery from the RO system is essential. AQUANZA has the ability to offer complete ZLD solutions from the point of effluent generation to the point of dry salt and recycled water production.
MICRO FILTRATION/ ULTRAFILTRATION SYSTEM (MF/UF)
AQUANZA can design pre-engineered membrane system with a modular building-block configuration and ultra-compact footprint. The system provides improved performance, reduced installation costs, and a smaller footprint, lowering the cost of treated water.
The microfiltration systems are skid-mounted and pre-assembled for easy reassembly and installation. The tubular membranes are designed for very high solids loadings. The membrane is chemically inert. The membrane provides for an absolute barrier to the passage of solids. This results in the removal of most colloids and therefore provides a filtrate that exhibits a very low SDI, making the filtrate a perfect feed for a reverse osmosis unit or other polishing technology.
Our UF Systems utilizes the latest PVDF membranes. Technological advancements provide simplified setup, in-place access, and superior filtration performance at less cost.
AQUANZA’s ultra filtration system is ideal for both new installations and major upgrades, and can be used in both municipal and industrial applications, including:
• RO pretreatment for desalination
• Industrial process water
• Potable and non-potable reuse
• Drinking water in surface and groundwater applications
• Hydraulic efficiency—Optimized system hydraulics ensures a more consistent flow variation across the length of the rack
• Modular design—Fully assembled with integral headers and module housing provides a readily scalable platform
• Advanced fiber chemistry—UF membrane modules employ the latest highly abrasion resistant PVDF UF fiber
• Accessible—Multiple access points to the modules within the rack enables in place maintenance
• Easy shipping—Membrane racks fit into standard shipping containers allowing for rapid deployment anywhere in the world
• Higher System Productivity—Backwash duration reduced by more than 35%, increasing module uptime and lowering system costs by processing more water over the course of a day
• Improved footprint—Maximum filtration performance in a fraction the footprint of UF membrane arrays saves on building space and costs
• Better equipment access—Module, easy-access design allows for in-place repairs and saves on maintenance costs
• Simplified installation—Single-ended connections on the Membrane rack enables simple and fast installation
• Lower cost of treated water
REVERSE OSMOSIS (RO) SYSTEMS
AQUANZA offer a cost-effective and sustainable solution for water, wastewater and reuse applications. With our design, installation & operation experience in reverse osmosis systems engineering, you can rely on us for your most demanding liquid separation and purification needs using reverse osmosis and nano filtration technologies. Our reverse osmosis systems includes those specifically engineered and designed for large industrial applications, medium sized commercial applications, small laboratory applications and trailer-mounted mobile systems for temporary and emergency applications.
Reverse Osmosis Product Technology
Reverse osmosis uses a semi-permeable membrane to remove minerals and dissolved solids from water. RO can normally be considered economically attractive on water chemistry with 250ppm ≤ TDS ≤ 2000ppm. Between 150 -250ppm TDS, local economical considerations and water chemistry will determine whether RO is a viable option. Normally on waters with TDS < 150ppm, ion exchange without RO is feasible for TDS reduction.
A single pass reverse osmosis system typically removes 97% of the total dissolved solids (TDS) and 95% of naturally occurring organics. The water recovery and average membrane flux usually ranges from 65 to 80% recovery and 14 to 18gfd respectively with both being dependent on the water chemistry.
RO APPLICATIONS FOR INDUSTRY
RO is used to produce highly purified water for drinking water systems, industrial boilers, food and beverage processing, cosmetics, pharmaceutical production, seawater desalination, and many other applications.
Reverse osmosis (RO) is a special type of filtration that uses a semi-permeable, thin membrane with pores small enough to pass pure water through while rejecting larger molecules such as dissolved salts (ions) and other impurities such as bacteria. Reverse osmosis (RO) is used to produce highly purified water for drinking water systems, industrial boilers, food and beverage processing, cosmetics, pharmaceutical production, seawater desalination, and many other applications. It has been a recognized technology for more than a century and commercialized since the 1960’s.
Industries today rely on a continuous supply of high purity water to achieve their mission. The high purity water is often produced onsite, starting with raw water or a municipal supply and removing from it various impurities, including biologicals, gases, suspended solids, and, most commonly, dissolved solids. Reverse osmosis is often part of a complete treatment system that includes pre-pretreatment and sometimes post treatment polishing by ion exchange.
Our customers most frequently use reverse osmosis to prepare water for these applications:
Boiler Feed Water
Ultra pure water – For Micro Electronics & Pharmaceutical
Ingredient Water – For Food and Beverage processing industry
Water Re-use & recycling
Desalination – Due to high salt content and cannot be used for either potable consumption or industrial processing. However, in certain regions, the only available water source is either brackish or seawater. Reverse osmosis systems can reduce the dissolved solids level of brackish water (2,000-10,000 mg/l) and seawater (30,000-40,000 mg/l) to potable levels and further treatment can generate the higher purity waters needed for industry, medical care, and institutional use.
AQUANZA has the experience and ability to offer small scale water and waste solutions for rural areas with small and dispersed populations. AQUANZA has the technical expertise to offer distributed, single family or single village solutions for water treatment, wastewater treatment, and solid waste treatment.
Waste management or Waste disposal is all the activities and actions required to manage waste from its inception to its final disposal.
This includes among other things, collection, transport, treatment and disposal of waste together with monitoring and regulation. It also encompasses the legal and regulatory framework that relates to waste management encompassing guidance on recycling etc. There are eight major groups of waste management methods, each of them divided into numerous categories. Those groups include source reduction and reuse, animal feeding, recycling, composting, fermentation, landfills, incineration and land application.
AQUANZA has the technical expertise to offer high quality water treatment solutions for drinking.
Potable water is water which is fit for consumption by humans and other animals.
It is also called drinking water, in a reference to its intended use. Water may be naturally potable, as is the case with pristine springs, or it may need to be treated in order to be safe. In either instance, the safety of water is assessed with tests which look for potentially harmful contaminants.
Substances that are removed during the process of drinking water treatment include suspended solids, bacteria, algae, viruses, fungi, and minerals such as iron and manganese. It is therefore common practice to keep residual disinfectants in the treated water to kill bacteriological contamination during distribution.
The most common types of household water treatment systems consist of:
• Filtration Systems
A water filter is a device which removes impurities from water by means of a physical barrier, chemical, and/or biological process.
• Water Softeners
A water softener is a device that reduces the hardness of the water. A water softener typically uses sodium or potassium ions to replace calcium and magnesium ions, the ions that create "hardness."
• Distillation Systems
Distillation is a process in which impure water is boiled and the steam is collected and condensed in a separate container, leaving many of the solid contaminants behind.
Disinfection is a physical or chemical process in which pathogenic microorganisms are deactivated or killed. Examples of chemical disinfectants are chlorine, chlorine dioxide, and ozone. Examples of physical disinfectants include ultraviolet light, electronic radiation, and heat.