Different types of wastewater need different kind of treatment to get recycled. In order to separate solids from the water, strainers, screens and membrane technologies are implemented. On the other hand, if it heavy metal that needs to get separated, nanofication and precipitation processes are widely used.
Any kind of solid contaminants from wastewater can be removed using strainers and screens. These are used so that any kind of solid substance hair, wet wipes, bottles and packets can be filtered out of the wastewater stream. The volume and the length of strainers and screens are dependent on the area of application. Preliminary cleaning stands as one of the necessary steps especially during the treatment of municipal wastewaters. It helps to remove the fibres from the wastewater as they pose significant threat to the environment as well as to
the next processes. If there is fibre material in the advanced cleaning stages, they can cause damage or block the mixers and pumps.
The process of filtration helps separate inorganic and organic solids, dust materials and sand from the wastewater stream. This is a mechanical separation which can be implemented on sludge as the preliminary filtration process. Filtration is actually a step by step process and is used for different purposes, household and industrial.
In this advanced system of filtration, both un-dissolved as well dissolved substances in the wastewater stream get filtered through the membrane. This process is applicable for both household and industrial uses. In case of household uses, a membrane or a solid filter is set in water purifiers which filter and distil water so that it could be fit for drinking. In case of industrial membrane filtration, large amounts of dissolved and un-dissolved contaminants get filtered from the wastewater stream for the factory to reuse the recycled and treated water.
It is the process to remove contaminants from the wastewater stream that may be dispersed and even suspended by means of gas bubbles that very fine. It is basically used to filter oils and fats from the wastewater. Accumulation of the particles is always better if the size of the bubbles produced is very small. Micro bubbles guarantee the surety of the filtration process.
There are several chemical processes Ion Exchange, Flocculation, Precipitation and nanofication among several others that are used to process industrial wastewater.