Water & Waste Water Treatment Plants

Greywater can be defined as any domestic wastewater produced, excluding sewage. The main difference between greywater and sewage (or blackwater) is the organic loading. Sewage has a much larger organic loading compared to greywater. Some people also categorise kitchen wastewater as blackwater because it has quite a high organic loading relative to other sources of wastewater such as bath water. People are now waking up to the benefits of greywater re-use, and the term "Wastewater" is in many respects a misnomer. Maybe a more appropriate term for this water would be "Used Water". We in Soma Utilities offer various solutions for treatment of sewage. we offer sewage treatment plants based on MBBR,MBR,SBR, Extended Aeration & SAFF.

Effluent Treatment Plant or ETP is one type of waste water treatment method which is particularly designed to purify industrial waste water for its reuse and it’s aim is to release safe water to environment from the harmful effect caused by the effluent. Industrial effluents contain various materials, depending on the industry. Some effluents contain oils and grease, and some contain toxic materials (e.g., cyanide). Effluents from food and beverage factories contain degradable organic pollutants. Since industrial waste water contains a diversity of impurities and therefore specific treatment technology called ETP is required. The ETP Plant works at various levels and involves various physical, chemical, biological and membrane processes to treat waste water from different industrial sectors like chemicals, drugs, pharmaceutical, refineries, dairy, ready mix plants & textile etc.

The working principle of a multigrade filter is quite straight forward. In a multigrade filter or pressure sand filter, water is passed through multi layers of filter media consisting graded sand, pebbles and gravels layers. The contaminants in the water are captured in the media bed and filtered water passes into the discharge manifold at the bottom of the tanks. The next and last step is backwashing, a process of effectively removal of captured contaminants from the media bed. After back-washing the filter is rinsed with raw water and after the required quality of water is achieved the filter is put back into service.high dirt-holding capacity and capacity to reduce turbidity and TSS (< 5ppm) from water, it protects ion-exchange resins and membranes from physical fouling due to suspended impurities present in the water.

Reverse osmosis (RO) is a water purification technology that uses a partially permeable membrane to remove ions, molecules and larger particles from drinking water. In reverse osmosis, an applied pressure is used to overcome osmotic pressure, a colligative property, that is driven by chemical potential differences of the solvent, a thermodynamic parameter. Reverse osmosis can remove many types of dissolved and suspended chemical species as well as biological ones (principally bacteria) from water, and is used in both industrial processes and the production of potable water. The result is that the soluteis retained on the pressurized side of the membrane and the pure solvent is allowed to pass to the other side. To be "selective", this membrane should not allow large molecules or ions through the pores (holes), but should allow smaller components of the solution (such as solvent molecules, i.e., water, H2O) to pass freely.[1] In the normal osmosis process, the solvent naturally moves from an area of low solute concentration (high water potential), through a membrane, to an area of high solute concentration (low water potential). The driving force for the movement of the solvent is the reduction in the free energy of the system when the difference in solvent concentration on either side of a membrane is reduced, generating osmotic pressure due to the solvent moving into the more concentrated solution. Applying an external pressure to reverse the natural flow of pure solvent, thus, is reverse osmosis. The process is similar to other membrane technology applications.Reverse osmosis differs from filtration in that the mechanism of fluid flow is by osmosis across a membrane. The predominant removal mechanism in membrane filtration is straining, or size exclusion, where the pores are 0.01 micrometers or larger, so the process can theoretically achieve perfect efficiency regardless of parameters such as the solution's pressure and concentration. Reverse osmosis instead involves solvent diffusion across a membrane that is either nonporous or uses nanofiltration with pores 0.001 micrometers in size. The predominant removal mechanism is from differences in solubility or diffusivity, and the process is dependent on pressure, solute concentration, and other conditions.[2] Reverse osmosis is most commonly known for its use in drinking water purification from seawater, removing the salt and other effluent materials from the water molecules.

Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate(filtrate). This separation process is used in industry and research for purifying and concentrating macromolecular (103 - 106 Da) solutions, especially protein solutions. Ultrafiltration is not fundamentally different from microfiltration. Both of these separate based on size exclusion or particle capture. It is fundamentally different from membrane gas separation, which separate based on different amounts of absorption and different rates of diffusion. Ultrafiltration membranes are defined by the molecular weight cut-off (MWCO) of the membrane used. Ultrafiltration is applied in cross-flow or dead-end mode.

In the operation of a steam power plant, there are various types of water requirements depending upon the location and the purpose for which it is used. The different types of water would be for example raw water, clarified water, recycled water, DM water. The different types of water used have different applications in a power plant and they all differ in terms of the water chemistry i.e pH, Turbidity, Hardness, TDS (Total dissolved solids), TSS (Total suspended solids), specific conductivity etc. The DM water is one of the crucial types of water which is used for steam generation in boiler. As it is used for steam generation, it is important that the hardness, TDS & TSS Levels, the specific conductivity etc are kept under permissible limits. The amount of chlorides, sulphates and calcium should be kept under limits to prevent scaling of boiler tubes. Also, silica which is major concern for boiler and condenser tube scaling should be within a range of 0.01–0.3 mg/l to prevent scaling. So, because of the stringent criteria required for steam generation, DM water plant is required in a steam power plant. In other areas of the plant where water is used say only as a cooling medium, DM water is not required and hence clarified water may be used for the purpose. Hope this helps !!!

Retrofit jobs are undertaken with assured benefits to the client. Till date, Retrofit assignments have been successfully implemented in the residential, commercial and industrial sectors.

We at Soma Utilities are dealing in all spares required for STP,ETP,WTP,RO & DM Plants, some spares images are as unde

Maintenance & Manpower

In On Call services we visit the plant on client request & examine the problem in plant if any & give best solution to client for that.

As per operation and maintenance contracts, we undertake complete responsibility of the plant to provide treated water of the designed quality and quantity. Our proficient workforce offers clients services with requisite spares and consumables for hassle free operation of the plant.

we are providing Manpower for Housekeeping work for commercial & industrial Purposes. With cleaning chemicals & consumables.

WATER Treatment Chemicals

    1. R.O. Plant Chemicals
    2. Descalants Passivators
    3. Acid Inhibitors
    4. Pickling inhibitor/Foaming Compound
    5. ETP Chemicals
    6. Other Products
    7. Cooling tower Chemicals
    8. Boiler Water Treatment Additive
    9. Boiler Fire Side/ Fuel Additives


we at soma utilities also involved in some small civil works for water & waste water treatment plants etc. like civil foundations, Tanks , & other small kind of civil work.

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