When thought of wastewater, what usually comes up in one’s mind is domestic wastewater and sewage. But more than that, wastewater includes any used water and water-carried solids from a community, which flows to a treatment plant, like stormwater, surface water and industrial water. In all these types of wastewater, only around a percent of water is solids, chemicals, nutrients, fats and other pollutants.
Here is a walk through of how the basic treatment of domestic wastewater takes place.
Screening
The sewer systems function by gravity flow, which pulls wastewater towards the treatment plant. The wastewater enters the plant and passes through the preliminary treatment called ‘screening’, where substantial objects are trapped and removed for landfill disposal. After the screening, the water is pushed towards a grit chamber to skim out heavier solids like rocks, sand, gravel, and other materials, which are also sent to the landfill for disposal. Following the preliminary treatment, the water flows to a primary sedimentation basin where the left out solids from grit chamber are separated from the water. At this stage, the small yet heavy particles like vegetables or fruits, settle at the bottom (sludge), and lighter particles like fats and oils stay afloat, which are removed by skimming.
Aeration & Sedimentation
The wastewater after the screening, grit chambers and preliminary treatment, enters the secondary treatment process, the two step process
The first step is called the ‘aeration’. Here, the wastewater is mixed with air and microorganisms which consume suspended organic matter such as food, human faeces and other organic matter. In the second phase, the wastewater undergoes a yet another sedimentation process where the microorganisms - the activated sludge, are removed from the fairly clean wastewater. The activated sludge is returned to the oxidation ditches to absorb more organic matter or is diverted to the digestion process for the waste is treated and dewatered to reduce pathogens and organic attraction like flies, mosquitoes, rodents etc. This sludge is called biosolids. This is mostly good for land application for farmland or reclamation sites or disposed at the landfill.
Disinfection The wastewater after sedimentation process is relatively clean, and is sent to filtration process to remove fine particles, afterwhich the water is ready for disinfection. The common form of disinfection process is adding chlorine to the wastewater. Other disinfection methods like ozone, UV light, and peroxide. The water is sent through a chamber or series of basins to disinfect and kill the bad microorganisms. This wastewater is called ‘reclaimed water’ and is released in the environment. This water can be recharged into the groundwater and is often used for farms and non-edible crop irrigation, dust control and construction activities. This controls the harm caused to the environment by releasing untreated water.
Roserve effortlessly handles domestic and industrial wastewater treatment, and provides Leasing & Renting wastewater management solutions. With various case studies and experience of providing solutions for many industries, across categories; we’ve become the ultimate destination for micro to macro scale industries for wastewater management solutions
When it comes to wastewater management for your company, as per your tailored needs think of us! A cost-effective way to reuse and recycle the water, LEASE wastewater treatment equipment with us and grow your business while meeting environmental regulations, all at the same time. A One Stop shop for all your wastewater management woes!!! Follow us on Facebook, Instagram, and LinkedIn for more updates and announcements.
As per the Ministry of MSME’s Annual Report for FY18, there were a total of 6.33cr MSMEs in India, employing about 11cr people, representing more than half of India’s workforce.
Further, MSMEs accounted for 30% of India’s GDP, 45% of India’s total manufacturing, and 40% of India’s exports in FY18.
The sector has consistently maintained a growth rate of over 10%.
Manufacturing industries which are a part of the MSME sector face problems that goes beyond their reach in terms of Wastewater management across their production facilities but are bound by the mandatory norms of the State and Central Pollution Control Board’s (PCB’s) - Setting up of Wastewater Treatment Plant to ensure discharge as per PCB normsIndustrial wastewater treatment equipment installation costs are typically very heavy which weigh on the pockets of the businessmen, who can barely afford to run the manufacturing units.
A backburner even for a large-scale industry, the capital investment becomes a major step and a big decision to take.In most of the manufacturing industries, the final output or the finished product produces fair amount of wastewater, which can be either recycled or reused in the same process again.
By treating the industrial effluent of large-scale industries and MSMEs, ROserve can help the companies optimize cost on the extraction of groundwater while at the same time help them in meeting the PCB norms through recycle and reuse of that water again.The unavailability of cost-effective solutions in the market makes many manufacturing units and multiple other industries difficult to run and expand.
Waste water treatment plant is in high demand in those industries which are in need of clean water.
They are used to work with wastewater i.e., water which cannot be again put to use or is not required again.
They can be again released into nature by converting them into bilge water.
A waste water treatment plant helps in showering, washing, utilizing the container and spilling over of the water.
Waste water is full of various kinds of contaminants like microscopic organisms, chemicals and poisons.
A treatment plant helps in reducing the effect of these contaminants and makes the water suitable for releasing into nature.The plants basically use clariflocculators are meant for primary treatment of the effluent water, chemically.
All those industrial facilities which release wastewater as a byproduct of their manufacturing process require some type of treatment system.
As, an improper discharge can lead to potential harm to the environment, people and including the manufacturing process of the industry.
Therefore, it is imperative to do research and determine which type of wastewater treatment system will fulfil your industrial requirements before getting the plant installed.
Different treatment systems like Membrane Bioreactor (MBR), Submerged Aerated Filter (SAF), and Sequencing Batch Reactor (SBR), all have their own set of features and advantages.Determining the costs involvedDue to the availability of a wide variety of wastewater treatment systems, the cost can vary a bit.
The price will get affected based on the kind of filtration methods, treatment technologies, and your industrial requirements.Understanding Industry ChallengesWithout analysing the functional and locational challenges of your industry, it is difficult to determine the suitable wastewater treatment plant.
Wastewater contains several elements such as heavy metals, solids, unhealthy greases, hydrocarbons, oil, acids, phenol, sulphates, chromium, chlorinated organic compounds, etc, which can be very harmful to our environment.
