Wastewater must be treated because about 80% of it flows unfiltered into lakes, rivers, seas and oceans and this leads to environmental hazards. It causes a build-up of organic and inorganic contaminants, heavy metals and pathogens in these water bodies which contaminate freshwater and harm the aquatic ecosystem.
Rampant urbanisation and industrialisation have led to an enormous increase in the wastewater from both domestic setups (sewage) and industries (effluent). The output of water is much cleaner, more environmentally friendly effluent. Wastewater treatments also ensure that you comply with industry standards and regulations by Pollution boards, drafted to save the planet’s fast-dwindling freshwater reserves. Recover around 95% of your liquid waste for reuse, treat and retrieve valuable byproducts from your waste like salts, and produce a dry, solid cake for easy disposal.
Effluent Treatment Plants. (ETP)
Sewage Treatment Plants. (STP)
Zero Liquid Discharge. (ZLD)
Our Technologies Include
With new integrated technologies and comprehensive service, Hydromo provides complete solutions for a clean and future-ready water industry.
Membrane bioreactor is the combination of a membrane process like microfiltration or ultrafiltration with a biological wastewater treatment process, the activated sludge process. It is now widely used for municipal and industrial wastewater treatment.
Membrane bioreactor for wastewater treatment is a combination of a suspended growth biological treatment method, usually activated sludge, with membrane filtration equipment, typically low-pressure microfiltration or ultrafiltration membranes. The membranes are used to perform the critical solid-liquid separation function. In activated sludge facilities, this is traditionally accomplished using secondary and tertiary clarifiers along with tertiary filtration. The two general types of MBR systems are vacuum (or gravity-driven) and pressure-driven systems. Vacuum or gravity systems are immersed and normally employ hollow fiber or flat sheet membranes installed in either the bioreactors or a subsequent membrane tank. Pressure driven systems are in-pipe cartridge systems located externally to the bioreactor.
An “MBR System” is considered to be a complete and integrated membrane unit (sub-systems) with related components necessary to allow the process to function as desired. An MBR system often comprises ten or eleven sub-systems and includes fine screening, the Membrane Zone and, in most cases, some type of post-disinfection process.
The MBBR system consists of an aeration tank (similar to an activated sludge tank) with special plastic carriers called fluidized aerated bed (FAB) media that provide a surface where a biofilm can grow.
The carriers will be mixed in the tank by the aeration system and thus will have good contact between the substrate in the influent wastewater and the biomass on the carriers. To prevent the plastic carriers from escaping the aeration it is necessary to have a sieve on the outlet of the tank.
The MBBR system is considered a biofilm process. Other conventional biofilm processes for wastewater treatment are called trickling filter, rotating biological contactor (RBC) and biological aerated filter (BAF). Biofilm processes in general require less space than activated sludge systems because the biomass is more concentrated, and the eciency of the system is less dependent on the final sludge separation. A disadvantage with other biofilm processes is that they experience bioclogging and build-up of head loss. MBBR systems don’t need a recycling of the sludge, which is the case with activated sludge systems. The MBBR system is often installed as a retrofit of existing activated sludge tanks to increase the capacity of the existing system.
Sequencing batch reactors (SBR) are a type of activated sludge process for the treatment of wastewater. SBR reactors treat wastewater such as sewage or output from anaerobic digesters or mechanical biological treatment facilities in batches.
Oxygen is bubbled through the mixture of wastewater and activated sludge to reduce the organic matter (measured as biochemical oxygen demand (BOD) and chemical oxygen demand (COD)). The treated effluent may be suitable for discharge to surface waters or possibly for use on land.
Water enters through the inlet valve and the tank is filled while the mixing is provided by the air blowers. Aeration of the mixed liquor is performed during the second stage by the use of fixed or floating mechanical pumps or by transferring air into fine bubble diffusers fixed to the floor of the tank. No aeration or mixing is provided in the third stage and the settling of suspended solids starts. During the fourth stage the outlet valve opens and the “clean” supernatant liquor exits the tank.
Aeration times vary according to the plant size and the composition/quantity of the incoming liquor, but are typically 60 to 90 minutes. The addition of oxygen to the liquor encourages the multiplication of aerobic bacteria and they consume the nutrients. This process encourages the conversion of nitrogen from its reduced ammonia form to oxidized nitrite and nitrate forms, a process known as nitrification.
To remove phosphorus compounds from the liquor, aluminum sulfate (alum) is often added during this period. It reacts to form insoluble compounds, which settle into the sludge in the next stage.
It is a tested and proven methodology for the last 8 decades around the world. This technology allows several modifications for all the special requirements available.
Sludge recirculation and aeration requires uninterrupted power supply and careful monitoring of the reactor sludge levels. 80-90% of the bacteria is removed and 90-99% of the viruses.
It is an advanced, low powered, fully automated and low maintenance sewage treatment system developed by Hydromo.
Treatment of the effluent in ECOBUD is based on natural biological augmentation which requires very low power. It works on a combination of Anaerobic digestion, which is a process in which microorganisms convert organic matter into biogas in the absence of oxygen, in a primary settling tank, followed by Aerobic biological oxidation, clarification and polishing by natural filters of sand and fibers.
The system includes pretreatment of euent using an oil and grease skimmer, primary clarifier, fixed bed bioreactor and MBBR based Biological treatment of the sewage. Polishing of final water is done by Multi grade bed filtration.
EcoBud works on a combination of Biological processes which include solids to bio gasification in an anaerobic primary settling tank, followed by an aerobic biological oxidation, clarification and polishing by natural filters of sand and fibers.
