Effluent treatment is process of removing contaminants from wastewater. It contains physical, biological and chemical processes. Its aim is to release safe water to environment so that it cannot harm to environment. This Article explains how to create and what are the factors needs to be considered in effluent treatment plant design process.
Benefits of Effluent Treatment Plant
All manufacturing companies face strict regulations on waste and discharge. Non-Compliance can lead to fine and operations interference from pollution control board. Wastewater treatment plant can be beneficial for :
Stay in compliance
Reduce supply cost by recovering production materials out of the waste stream for recycle
Eliminate extra water usage during processing
Reduce hauling and off-site treatment cost
Wastewater treatment plant design is primary process in which untreated waste water is analyzed and based on requirement of uses of treated effluent plant is designed. Also design of effluent treatment plant is industry specific.
Design of effluent treatment plant is to treat non-hazardous industrial waste water and should focus on cost-effective, minimal maintenance and requires minimal manpower etc. Also these plants should include processes such as pH change, aerated lagoon, polishing/infiltration ponds and sedimentation/facultative basins etc.
Design of effluent treatment plant is highly depends on industry and site. Major points taken into consideration while designing effluent treatment plants are characteristics of site and wastewater. Untreated effluent standards and treated effluent standards are also taken into consideration in process of wastewater treatment plant design.
Characteristic of Site in ETP Design
Characteristic of site like soils, topology, geology, hydrology, climate and land use are taken into consideration while designing ETP. Knowledge of Depth of rock layer and topography (it’s the way where height and depth of land shown in green and yellow Color in map) also helps in designing of ETP for using gravity flow and burial of pipes which are most necessary. Soil thickness, its content, its characteristic, organic, inorganic matter and permeability (capacity of holding water) are also taken into consideration in ETP design Process. ETP plant may affect land used in ETP construction.
Also precipitation is considered when infiltration is problem and evapotranspiration used when wastewater treatment includes process of evaporation.
Characteristic of Wastewater in ETP Design Characteristic of wastewater must be taken into consideration in terms of physical, chemical and biological characteristic. Size of effluent treatment plant i.e. ETP is depends upon its flow (measured in m3 / day. Flow of wastewater should be estimated correctly considering all possible reasons otherwise they will affect hydraulic computations, channels and pipes. Also if there is need to construct equalization pond due to temporary large flow (eg rainfall etc.) to maintain constant flow downstream treatment process. Equalization ponds also helps to reduce toxicity of wastewater. Physical Characteristic of Wastewater include PH, Colour, odour, temperature. Suspended solids, grease, oil indicate highly polluted wastewater with very low turbidity. Presence of these matters indicate that need of pre-treatment before releasing to environment. Temperature is also major factor because higher the temperature higher the reaction rate. Chemical characteristic of wastewater includes organic, inorganic in solutions and gases. Biological Oxygen demand (BOD) is indicator of amount of biological substances (proteins, fats, etc.) present in effluent. Comparison of BOD for untreated and treated gives idea about efficiency of Effluent treatment plant. Chemical oxygen demand (COD) measures biodegradable and non-biodegradable organics. Also ratio between BOD and COD tells much more about ETP health. Removal inorganic substances such as chlorine, nitrogen, heavy metals, cyanides phosphorous and sulphur from effluent is also important because Nitrogen and phosphorus prone to excessive algae growth and harmful heavy metals increase toxicity. Due to microbiological actions in wastewater treatment methods produces various gases. The type of gases indicate whether aerobic or anaerobic degradation is taking place.
Questionnaire for ETP Plant Design Below are some of the questions which will help you to understand type of effluent treatment plant is required.
What national or international standards must you comply with?
Choosing an right Effluent Treatment Plant
What volume of effluent do you have?
What chemicals does it contain?
At what concentrations?
Do you plan to increase production in future?
Will this increase the amount of effluent to be treated?
How much can you afford to spend on constructing an ETP?
How much can you afford to spend on running an ETP?
How much land do you have available, or can you buy, on which to build the ETP?
Which ETP expert or designer should be used?
What type of plant will best suit your requirements? (The answers that you give to the above questions will help you and the designers to decide this).
What capacity do you have in your factory to manage the ETP?
Do you need to hire more staff or train existing staff?
Effluent Treatment Systems
We are offering wide range of Effluent Treatment Systems to our clients and our organization holds expertise in offering a superior range of effluent treatment plant to our clients. These Effluent Treatment Systems are widely appreciated by our clients for its hassle free performance. These products are available in market at most economical rates.
we offer a complete and effective range of Effluent Treatment Plants and solutions to enable recycling of wastewater, thereby reducing the water demand burden.
Our comprehensive treatment solution works at various levels and involves various physical, chemical, biological and membrane processes.
Our systems include physic-chemical treatment, biological treatment, tertiary treatment and membrane separation process to achieve zero-discharge standards laid by the statutory authority. We provide innovative and economical systems for waste from industries like chemicals, drugs, pharmaceutical, refineries, dairy, ready mix plants & textile etc.
Screening/ Grit chamber: To remove floatable matter and sand, grit, stones in raw effluent.
Oil & grease trap: To remove floatable oil and grease from raw effluent.
Primary treatment: Includes chemical treatment (coagulation, flocculation, neutralization) and solid-liquid separation for removal of suspended solids.
Secondary Treatment: Includes biological treatment for reduction of BOD/COD and solid-liquid separation. Biological treatment can be aerobic or anaerobic depends on quality of raw effluent. Aerobic- ASP (Activated Sludge Process), MBBR/FAB (Moving Bed Bioreactor/ Fluidized Aerated Bioreactor), SAFF (Submerged Aerated Fixed Film Bioreactor), MBR (Membrane Bioreactor) Anaerobic- UASB (Up-flow anaerobic Sludge Blanket Reactor)
Tertiary treatment: Sand and carbon filtration for removal of suspended solids and organic material. Ultra-filtration and Reverse Osmosis are the advanced technologies to be implemented for zero-discharge system.
Longer shelf life
We design ETP that finds application in:
Electroplating and phosphate Industries
Food & Beverage Industry
Pharmaceutical & Drug Plants
With the support of vast infrastructure, we are involved in developing highly demanded Effluent Water Treatment Systems. Our offered treatment technologies are compliant to the rigid norms of pollution control board. These treatment plants are developed with robust quality material and prefabricated structures that can be customized as per the clients’ requirement. Further, we are utilizing the sustainable technology of water treatment that is viable in reduction of both organic and inorganic content.
Zero liquid discharge
Minimal sludge production
Lower operating cost
Industrial Effluent Treatment Plant is the process of treating waste water that is contaminated by industrial or commercial wastes. Industries produce waste that might highly contaminate the surroundings; to avoid this industrial effluent treatment is required. These effluent treatment plants are used for purifying waste material that is an industrial waste . treatment plants help in solving environmental pollution issues without exposing same to open environment. These effluent treatment plants are known for saving energy and removing pollution effluent with economical operations and also meet stringent pollution control norms These effluent treatment plants can treat effluent coming from different areas of plant.