BWI Projects Private Limited Anna Nagar, Chennai, Tamil Nadu

Zero Liquid Discharge Systems is not about putting big evaporators, crystallizers at end of effluent treatment plants. It is a way of making industries more accountable for the water intake and building trust of communities in large scale industrial set ups. It has been common phenomenon world wide that large scale industries are not welcome into any area because they cause problem with there liquid and air discharges. More over due to rapid urbanization and high number of industries with limited water sources there is no chance of natural dilution, diffusion, self adjustment, self purification, process to occur in water bodies. So governments all over the world are implementing Zero Liquid Policy that help companies builds trust with local communities, improve brand value and makes them accountable to resources of the nation. Zero Liquid Discharge policy mandates that all the water and liquids waste to be recycled and reused in the industrial compound itself. To achieve Zero Liquid Discharge the whole cycle of intake, process and treatment of water, effluent has be optimized. Bioworks helps its client to achieve Zero Liquid Discharge in following ways Optimizing the intake methods of water Providing process water treatment plants with minimum wastage of intake water Providing process inputs that bring down consumption of process water Optimizing all the manufacturing process Optimizing the House Maintaining activities in the industry to mitigate generation of waste By providing clients in Total Plant Water Management Systems Providing effluent treatment plants that can provide 90-95 % recovery Providing energy efficient evaporators Providing energy efficient crystallizers We offer state of art effluent treatment plants to reclaim the 90-95% of effluent water with conventional and membrane filtration processes. To reclaim the rest of the water we can provide evaporators of following configurations based on the quantity and application Multi Effect Falling Film Brine Evaporators Multi Effect Forced Circulation Evaporators Horizontal Spray Evaporators Fluidized Bed Evaporators

Ultra Filtration units contain capillary tubes that are assembled in membrane housing to filter out suspended solids, bacteria, virus and proteins, based on their size and atomic weight. Ultra filtration membranes commonly applied in water treatment are of two type 1)in to out 2) out to in. Both the units have their own advantages and disadvantages. But the working of the membranes is on common principle of sieving of particles in water. Ultra Filtration membranes are made of different material like PES, PVDF, etc. Ultra filtration units employed are to pre treat the water that is fed to RO systems. The UF filtration of water reduces suspended solids in water, removes colloidal silica and virus, bacteria .Bioworks offer complete automated units for pretreatment of effluent, process waters. Applications Pre treatment to RO Removal of bacteria and Virus Removal of colloidal silica

High Rate Solid Contact Clarifier are the most popular clarifiers in field of water treatment. They are preferred more than any other clarifier because they can handle large flow rate and provide better effluent quality outlet than other clarifiers.

Reverse Osmosis popularly known as RO is most popular membrane filtration world wide. It is used in wide variety of applications like to produce drinking water, to reduce dissolved solids in process feed water and reduce dissolved solids in process effluents from wide range of industries. Basically RO is the reverse process of natural osmosis. In this process pressure higher than that of the natural Osmotic pressure drives the solvent towards the dilute solution. This technique when applied on water, water with low salts is produced as permeate. In water treatment applications many types of membrane materials and configuration of RO membranes are available. The most popularly used configurations are Disc type RO and Spirally wound type. Based on the complexity and budget constraints a choice between the options is made. Bioworks offer both type of configuration. Bioworks is registered vendor for supply of RO drinking water plants across many states in India. Applications Drinking water production DM plants Desalination Process Feed Water Filtration

Application : Filteration

Voltage : 220V

Automatic Grade : Fully Automatic

Power : 1-3kw

Power Source : Electric

Warranty : 2years

Sand Filters are oldest equipment to be used in water treatment. In this filters sand is used as filtration bed to separate suspended solids from water. The suspended particles in water are trapped inside the bed based on different mechanisms such as direct collision, Vander vals Attraction, Surface Charge attraction and diffusion. Based on the type of water source and flow requirement, this filters can be configured in down flow or up flow configurations. Applications Drinking Water Filtration Intake water Filtration Pre treatment for RO Effluent filtration

Multi grade Sand Filters use different grades of similar media in fixed ratio. The use of similar media in different grades creates a bed with pores of different sizes. This helps in entrapment of the suspended particles in the media. This filters can be operated at higher specific surface flow rates. Hence the size of the filters can be smaller and quality of effluent will be superior. Applications Drinking water filtration Intake water filtration Side Stream Filtration

micron cartridge filters separate suspended solids, silt, fine dirt from water. Different types of cartridge materials are employed to filter the water based on applications. Pleated type, string wound, media filled cartridges and melt down cartridge are available. All these are available in different micron ratings. The micron ratings of these filters are in range of 100-1 micron. Based on the solids particle distribution, micron cartridge filters for particular applications are installed. They trap all the solids above the rated size. As all the pores in micron filters are filled up the pressure drop across the housing increases. Then the cartridges has to be cleaned or replaced. applications pre filtration to ro units filtration of cip effluent pre filtration to uv, ozone units

Iron in water leads to stains on sanitary ware and tiles of buildings, garments. It also clogs RO, UF, Nano membranes. From location to location the concentration of the Iron in water changes. Based on Iron concentration in water, the media and total process to achieve the require reduction needs to altered. Generally green sand media, MgO2, brim media are used for filtration of Iron from water. In some cases chemical dosing, aeration needs to done prior filtration. Advantages Iron removal from Drinking Water Iron Removal from Ground Water

High Rate Solid Contact Clarifier are the most popular clarifiers in field of water treatment. They are preferred more than any other clarifier because they can handle large flow rate and provide better effluent quality outlet than other clarifiers. A typical high rate clarifier is circular in shape, the influent is fed to flash mixer to mix the coagulants. Then influent is transferred in center well where the water is distributed in all the directions. The center well also works as flocculation chamber too as it provided with slow speed mixer and flocculation dosing. Then the influent is distributed through the energy dissipating device in radial pattern. The sludge is continuously driven into the hopper bottom by continuous rating scraper. The bottom of tank is slopped to form a cone shape that helps in funneling the sludge to hopper bottom from which the sludge can be drawn out periodically. Advantages of High Rate Solid Contact Clarifier Can handle large flow rates with better effluent quality Compact equipments which require minimum maintenance

Bioworks supplies, pre engineered multi effect evaporators to clients. Our in house R &D team has developed evaporators for handling concentrated streams of waste water from effluent treatment plants. We understand that every effluent is unique and the constituents of effluent differ from one to another. So we have sponsored lots of research on establishing the right ways to concentrate the waste stream. We have developed evaporators which can provide heat energy to the waste water by oil, electrical coils and steam. This evaporators use forced film, falling film, rising film and thin film evaporation techniques. Based on the quantity and nature of effluent we can provide the following type of evaporators Evaporators which use oil or flue gas heat exchange medium Vaccum Based multi stage evaporation units with steam as heat exchange medium We provide SCADA control system for operation and control of the evaporation units. We understand that proper monitoring of flow rates guarantees longer life, trouble free maintenance, easy performance evaluation of the evaporators. We also provide ancillary units like the chemical cleaning system, cooling water network and vaccum systems for the evaporators. Advantages of Bioworks made evaporators are as below Proven and reliable heat transfer rates Energy efficient units Operation friendly Easy maintenance Less land requirement Compact design

Water that has been used for various process applications in industries is called effluent. Based on the nature of industry, products produced , type of processes employed complex effluents are produced. This effluents cannot be discharged or reused in the other applications. Effluents must freed of their pollutants, chemically and biologically stabilized before reuse and final polishing. Every industry produces an effluent of particular nature and there are host of options that can be employed to treat. Bioworks offers a wide range of solutions options to treat effluents. Based on the quantity, availability of funds, land and regulations we offer our solutions to treat effluent water to all kind of industries. Based on the nature of effluents we employ this processes/systems to achieve the regulations standards. We also offer completely integrated effluent treatment plants that help our customers meet the Zero Liquid discharge standards. Pre treatment By Oil Interceptors, Emulsion Breaking Systems, Bar Screens, Clarifications, Coagulations Chemical stabilization by Flash mixing, pH Correction, Anti Foam Dosing etc Bio Remediation of water by aeration in Batch reactors, continuous reactors Anaerobic treatment by USABR, Hybrid USABR, EGBR etc Nitrification and De nitrification by Anoxic /Aeration methods Clarification using membrane bio reactors, clarifiers, tube settler post bio remediation’s Disnfection by using Electro Chlorinators, Ozone Generators, Hydrogen Peroxide Effluent polishing by Pressure Sand Filters, Activated Carbon Filters, Dual Media Filters Membrane filtration by RO, UF ,Nano Filtration units Sludge Thickening, sludge minimization, sludge handling systems like thickeners, filter press, de canters, belt press, centrifudge, bag filtration methods Tanks and transferring systems for chemical supply Cleaning systems for cleaning of units like membranes filtration units Evaorators, drier to recycle waters that cannot economically treated

Dual Media Filters contain Anthracite and Sand in different proportions in addition to under bed support media. This filters are most commonly used when water has high concentration of suspended solids. Anthracite which has high dirt holding capacity, gives the filter long run with less back wash frequency. In addition to this these filters offer less pressure drop and are ideal choices for filtration post clarification, pre filtration to UF membranes, RO membranes. Applications Pre treatment to UF membranes Filtration post clarification Effluent filtration Side Stream Filtration

Water for drinking is one of the most essential of all human needs. The quality and quantity of available drinking water set the economic value of a particular region. WHO and Indian organizations have set standards for drinking water. Most of the sources of drinking water don’t meet the standards. Presence of E-Coli, Coliform in bore well water, surface sources, Iron and Arsenic presence in deep well bores, high hardness levels, high dissolved solids level, Fluoride content, Rotten egg smell are some of the most common contaminants that make water not fit for drinking. Bioworks offers drinking water solutions that helps communities, villages, towns, residential and commercial complexes meet their drinking water requirements. We offer complete end to end solutions for removal of contaminants that make the water undrinkable. Based on the contaminants present one or more of the technologies, equipment has to be integrated to produce drinking water to match the IS 10500:2012 standards. We offer Aresenci Removal systems based on adsorption on alumina, ion exchange, RO, oxidation/filtration technologies based on the quantity and degree of contamination. Iron removal systems based on oxidation/filtration, adsorption, aeration/filtration technologies. Fluroide removal systems based on adsorption/ion exchange, precipitation, RO. Hardness removal systems based on Ion Exchange, Nano Filtration. Disinfection by Electro Chlorination, Ozone Generators, Hypo dosing and Hydrogen Peroxide dosing.

Bag Filters are used to remove excess loads on membrane filtration units. They are most commonly used as pre filtration units to UF, RO, Nano Membranes. They trap the fine silt, suspended particles, sand, carbon and other media particles that escape from filters. Bags of different micron rating can be connected in series to provided high quality effluent free of fine silt. Once the pressure drop exceeds the mark, the bag filters can be removed and washed, reused. They are comparatively cheaper to install and require zero maintenance. Advantages Pre filtration to RO, UF, Nano filtration Pre filtration to UV, Ozone units

Activated carbon filters are one of most popular and largely used filters world wide. The filters contain activated carbon in form of granules. The activated carbon is arranged in form of filtration bed in the filter. The carbon is supported by under bed media. The influent water flows down the activated carbon bed and is filtered of contaminants. Activated carbon filters can remove chlorine from water, bio products of chlorination, oil and grease, volatile organic compounds, odor, color. The best thing about this filters is different type of carbon can be used to remove different types of contaminants from water. Applications Drinking water filtration Pre treatment to RO De- chlorination