Exposure:
Exposure is “the process of discharge of air into wastewater for aerobic biodegradation of organic materials”. This is usually the first process completed in the treatment plant. This process allows close contact between air and water, which helps to remove dissolved gases (e. G. Carbon dioxide) and oxidize dissolved metals (e. G. Iron, hydrogen sulphide and other volatile organic chemicals (voc))。
Membrane bioreactors (mbr):
The membrane bioreactor technology facilitates the implementation of critical solid separation functions. This method uses membrane filtering equipment with biological treatment methods, such as low pressure microfiltration (mf) and ultrafiltration (uf). Vacuum (gravity driven) and pressure driven systems are the two types used in mbr。
Mobile bed bioreactor (mbbr):
The mobile bed bioreactors process has achieved good disposal effects with low energy consumption. It is used to remove organic matter, nitrification and anti-nitrification. Mbbr has an active sludge exposure system in which sludge is collected in recycled plastic carriers. The carrier has a large internal space to optimize contact with water, air and bacteria。
Bacteria grow on the surface of the carrier and decompose organic matter in wastewater. Exposure systems help to keep bacteria active in carriers。
Sbr:
The basic process of sbr is to bubble oxygen into wastewater to reduce bio-oxygen demand (bod) and chemical oxygen demand (cod). Bod and cod reductions make them suitable for land use. The sbr process is divided into five stages: filling, reaction, deposition, mapping and idle. Filling and response times may vary depending on exposure and mixing procedures. Sbr has several configurations, but the basic process remains the same。
Underwater inflatable fixed film (saff):
This is an economically effective method, mainly for residential and commercial complexes. Saff technology has three phases, primary, secondary treatment and final deposition/clarification. The saff process has reduced biooxidation (bod) and suspended solids (ss) sufficient to pollute rivers and seawater. The process improved the quality of wastewater discharges。
With reference to certain types of sewage treatment, it is clear that they are effective and can make water reuseable. It may not be suitable for drinking, but it can definitely be used for other purposes. Waste-water treatment is no longer a luxury but a necessity. As we live in this world, it will soon become mandatory。
