Sewage Treatement Plant


Sewage Treatement Plant

WATER ENVIRO ENGINEERS is prominent and high quality manufacturer and supplier of sewage treatment plant in Mumbai, Navi Mumbai.Sewage treatment Plant is the process of removing contaminants from wastewater, primarily from Residential houshold sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safer treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application.

A Sewage Treatment System which we are offering is not only for the treatment purpose but also getting recycled quality water to fit for the gardening , flushing & other non potable application.

We Offer STP plant with many processes such as given below :

  1. MBBR Process
  2. SBR Process
  3. SAFF Process
  4. Advanced Oxidation Process
  5. Electrolysis Process
  6. MBR Process

STP PLANT PROCESS :

To have eco-friendly & natural treatment, this plant is designed based on the oxidation treatment concept. This means natural air is used to generate ozone gas which removes or degrade the organic matter present in the sewage & at the end clean water is available for the non potable usage or to dispose safely in the drainage or river bodies as per the norms.


1. Pre – Treatment

Screening :  This is the first units of the plant in which large or floating materials in the sewage gets arrested and blockage or choking of the downstream equipments can be avoided. This arrested material will be removed manually and then will be disposed off suitably

Oil & Grease trap : Domestic sewage sometimes gets waste water from pantries or kitchen which contains free oil. This oil if not removed then creates the problem of scum accumulation and affects the functioning of microbes. To avoid this, oil & Grease trap is provided after the bar screen, where free floating oil is arrested prior to entry in the plant. Accumulated oil will be removed periodically and disposed off properly.

Equalization : To absorb variation in quantity and quality of sewage and to provide uniform flow at the downstream treatment process, a collection or equalization tank is provided. This will avoid shock loading and process upsets of the treatment plant.


2. Secondary Treatment

Biological Treatment :  This is the main section of the plant where degradation of organic pollutants with the help of aeration micro organism takes place.To provide higher surface area for micro organism ,floating media is provided.On which micro- organism growth takes place. This makes bio reactor of hybrid concept in which both suspended growth as well as attached growth principal for micro organism is achieved.Due to higher population of micro-organism ,effective volume of bioreactor is reduced drastically as compared to conventional aeration tanks.

To maintain the aerobic condition in the bioreactor ,air supply arrangement is provided by means of aeration equipment which has high oxygen transfer efficiency.

Oil & Grease trap : Domestic sewage sometimes gets waste water from pantries or kitchen which contains free oil. This oil if not removed then creates the problem of scum accumulation and affects the functioning of microbes. To avoid this, oil & Grease trap is provided after the bar screen, where free floating oil is arrested prior to entry in the plant. Accumulated oil will be removed periodically and disposed off properly.

Tube Settler :  Gravity overflow from the bioreactor is collected in the tube settler . In this settling tank, generated sludge from the bioreactor undergoes a gravity settling. Clear supernatant from settling tank will flow by gravity to a chlorine contact tank.

To reduce the plan area of settling tank , tube modules are placed in this tank to increase the settling area of the tank.Since this tank is a hopper bottom tank due to which there is no need of sludge scrapping mechanisms.

Disinfection :  Supernatant from Plain settler, flow by gravity to the chlorine contact tank. To disinfect the harmful bacteria in the treated water as well as to remove the refractory organics from treated water, in this tank hypo chlorite solution is dosed with the help of dosing system.

Sludge disposal system :  Settled sludge from plain settler will be removed by pumping to the sludge holding tank where it is passed to filter press to make cake of the sludge.


3. Tertiary treatment :

Secondary treated water will be further passed through sand media filter followed by activated carbon filter.

Filtered water will be collected in the Treated water Storage tank from where it will be for desired non potable application. Backwashed water from filters will return back to equalization tank.


If sewage treated & operated properly this sewage treatment plant will give enormous benefits such as

  • It will avoid the water pollution
  • It will help us to give hygienic surrounding
  • After required treatment, treated water can reduce your 60-70 % fresh water requirement, which otherwise we use for toilet flushing, gardening, construction etc. Thus we can save a lot on water expenditure as well as provide us a remedy on present water crises.
  • Being a water recycling & conservation system, commercial establishment gets depreciation benefits for promoting green & eco-friendly development.
  • Above all, we will be ensuring safe & hygienic environment to our society.

    Advantages of using our STP PLANT

  • This plant will produce the treated water which can be recycled back.
  • This plant is eco - friendly principle hence no need use of any excessive hazardous chemicals for the main degradation process.
  • There is no smell of biogas as it is not a biological process.
  • Due to oxidation technology, foot print area required for the plant is very less.
  • Due to smaller unit sizes, civil construction cost & overall project cost is very less.
  • Due to user friendly equipment, plant maintenance is very less.
  • Due to inbuilt automation, plant machinery life is high & ensures trouble free operation
  • All process rotating electromechanical equipment are provided with standby equipment to ensure the uninterrupted operation.
  • Due to effective after sales service from our qualified staff, maintenance issues to the owner are less.
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