With the rapid development of industrialisation and urbanisation, high concentration wastewater has become an increasingly serious environmental problem. High-concentration wastewater not only contains a large number of organic matter, inorganic substances, heavy metals and other harmful substances, and its concentration far exceeds the design capacity of conventional wastewater treatment facilities. Therefore, high-concentration wastewater treatment and discharge is particularly important.
1. The definition and characteristics of highly concentrated wastewater
High concentration of wastewater, usually refers to wastewater containing high concentrations of organic matter, heavy metals, toxic and hazardous substances and other pollutants. The content of pollutants in wastewater far exceeds that of general wastewater and is difficult to treat. It may contain many different types of pollutants, such as organics, heavy metals, and radioactive substances. Some of the pollutants may have an inhibitory effect on microorganisms, affecting the biological treatment effect, and are difficult to be removed by conventional biological treatment methods.
2. Scenarios of high concentration wastewater generation
Chemical production: Wastewater generated during chemical production often contains large amounts of organic matter, heavy metals and other pollutants.
Pharmaceutical industry: Pharmaceutical wastewater usually contains high concentrations of organic matter, antibiotics, etc., and is difficult to treat.
Dyestuff and textile industry: Wastewater generated from these industries usually contains a large amount of difficult to degrade organics and chromaticity.
Electroplating and metallurgy: the process of electroplating and metallurgy will produce wastewater containing heavy metals and toxic substances.
3. The core technology of high concentration?sewage treatment plant
High concentration sewage treatment plant, usually through physical or chemical methods to remove large particles in the wastewater, suspended solids, etc., to create conditions for subsequent treatment. Will also be through such as Fenton oxidation, ozone oxidation and other advanced oxidation technology, through the generation of strong oxidants will be difficult to degrade organic matter into easily degradable substances. The metabolism of microorganisms is utilised to remove organic matter from the wastewater. For highly concentrated wastewater, a combination of processes such as anaerobic and aerobic may be used to improve treatment. Dissolved substances in wastewater may also be removed by physical methods through membrane separation techniques such as ultrafiltration and reverse osmosis. Heavy metal treatment technologies such as chemical precipitation, ion exchange and adsorption are used to remove heavy metal ions from wastewater.
Therefore, for the high concentration of sewage treatment plant, to ensure that the effluent meets the standard, a reasonable choice of treatment process, strict control of the treatment process, strengthen the pre-treatment, optimise the operating parameters as well as regular testing and evaluation is very important, if problems are found, take timely measures to adjust.
High concentration?sewage treatment plant due to the special nature of its water quality, for the equipment has strict technical requirements, the need to have good product technology, project experience, as well as the idea of local conditions, in order to ensure that the high concentration of wastewater treatment equipment to meet the standards of the effluent. Liding Environmental Protection is a ten-year senior factory in the wastewater treatment industry, based in Jiangsu, radiating across the country, facing overseas, with strict product technology quality control team.
Post time: Jun-06-2024