Introduction of wastewater treatment package

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Depending on the type of pollutants present in the sewage and effluents, the equipment used in the packages and treatment plants will also be different. The design of wastewater treatment packages depends on the type of incoming wastewater, wastewater capacity and available parameters. The treatment process in various packages generally includes three stages of primary, secondary and final treatment, and these packages work based on the activated sludge process. One of the advantages of using wastewater treatment packages is that a wide range of wastewater treatment processes can be predicted and implemented.
When the wastewater enters the package, after removing the solids, it enters the aeration tank by the waste collector, and after receiving the oxygen, which is usually supplied by the blower, the aerobic bacteria begin to decompose the organic matter in the wastewater. After treatment of wastewater in the aeration tank, the activated sludge is separated along with the wastewater and the returned sludge is returned to the beginning of the aeration tank or sludge digester through this tank. The effluent, free of any suspended solids, then enters the chlorine contact tank by gravity for disinfection.
Industrial wastewater treatment package
One of the most important components of factories and industrial centers is water. Water is converted into industrial wastewater by passing through the devices in each section and mixing with various pollutants and chemicals. Therefore, before leaving this wastewater in nature, it must be treated so that it enters the nature cycle with the least harmful substances.
Impurities in industrial wastewater can be divided into two general groups. Organic pollutants, which include a variety of mineral salts, alkalis, chlorine, ammonia, and mineral acids, and inorganic pollutants, which include a variety of sugars, fats, oils, proteins, hydrocarbons, and organic acids. Some organic pollutants are resistant to decomposition, which are toxic and dangerous to the health and survival of aquatic animals. They also reduce the amount of dissolved oxygen in the water, which is considered contaminated if the dissolved oxygen in the water is less than the required amount. In this regard, eliminating or reducing the concentration of organic pollutants to maintain the health of the environment and people is essential.
Many industries and industries use industrial wastewater treatment plants, including the paper and cardboard industries, oil and petrochemicals, tanneries and dairy factories, car washes, and drug factories. کرد.
Treatment packages treat wastewater in three different ways that differ only in detail. It is also worth mentioning that in packages where it is possible to use water and industrial materials in order to perform various industrial activities, these packages must be used. The design of industrial wastewater treatment packages is done according to the amount of TOC, COD, BOD and FOG and all kinds of heavy metals and other existing pollutants.
The quality of the effluent, easier operation and no odor and pollution are some of the factors that are considered in the preparation and construction of these packages. Maintenance and care of wastewater treatment packages in order to increase the efficiency and performance of the devices is not only essential, but can be effective in reducing water consumption.
Sanitary wastewater treatment package
To remove contaminants and pathogenic bacteria from sanitary wastewater that exists in hospital and residential environments, the use of various packages is absolutely necessary. Human wastewater treatment packages should include an aeration tank, a sedimentation tank for sludge produced from the aeration tank, the ability to remove sludge to dispose of accumulated material, and a chlorination device to remove contaminants and bacteria.
Sanitary wastewater consists of two main parts, which include wastewater from washing and cleaning, which is called gray water (Gray water) and wastewater from the toilet, which is called sewage (sewage). When the two are mixed together, they can enter the purification process. Municipal wastewater is one of the largest sources of environmental pollution due to its heavy organic matter and contamination with a variety of pathogens and pathogenic bacteria. The most important differences between industrial and sanitary wastewater include more corrosiveness, acidity or alkalinity (high or low pH), the possibility of the presence of various chemicals, and the possibility of the presence of living organisms and microorganisms.
A variety of applications in purification packages
Physical treatment of sanitary wastewater
The first step in designing sanitary wastewater treatment packages is to use physical methods, which include garbage collection and removal of solids in the wastewater. It is important to note that organic and heavy materials are not removed in this way. The main reason for designing and constructing a sanitary and human wastewater treatment package is to prevent the spread of various infectious diseases and the entry of harmful organic matter into the environment in environments that are not connected to the central wastewater networks.
Contaminated wastewater becomes clear, odorless effluent after entering these packages and undergoing various stages of treatment. At this stage, by disinfection with chlorine or ozone, they will be able to excrete in surface and groundwater. Based on the mentioned processes, equipments such as types of garbage collectors (manual, mechanical and pair of nets), sedimentation pools and sludge bridges for collecting sediment sludge, classifiers and all kinds of aggregates for removing fine grains such as sand , Types of degreasers API and CPI are required.
Chemical treatment of sanitary wastewater
To remove all kinds of chemical and industrial contaminants in water from the purification method