With the rapid development of industrialization and urbanization, high concentration of wastewater has become an increasingly serious environmental problem. High-concentration wastewater not only contains a large number of harmful substances such as organic matter, inorganic matter, heavy metals, etc., but also its concentration far exceeds the design capacity of conventional wastewater treatment facilities. Therefore, the treatment and discharge of high-concentration wastewater is particularly important.
1. Definition and characteristics of high-concentration wastewater.
High-concentration wastewater usually refers to wastewater containing pollutants such as high-concentration organic matter, heavy metals, and toxic and harmful substances. The content of pollutants in wastewater far exceeds that of ordinary wastewater, and it is difficult to treat. It may contain many different types of contaminants, such as organic matter, heavy metals, radioactive materials, etc. Some contaminants may have an inhibitory effect on microorganisms, affecting the effect of biological treatment, and are difficult to remove by conventional biological treatment methods.
2. Scenarios for the generation of high-concentration wastewater.
Chemical production: The wastewater generated in the chemical production process often contains a large number of pollutants such as organic matter and heavy metals.
Pharmaceutical industry: Pharmaceutical wastewater usually contains high concentrations of organic matter, antibiotics, etc., which is difficult to treat.
Dyestuffs and textiles: Wastewater from these industries often contains high levels of refractory organics and color.
Electroplating and metallurgy: Electroplating and metallurgical processes produce wastewater containing heavy metals and toxic substances.
3. The core technology of high-concentration wastewater treatment equipment.
High-concentration wastewater treatment equipment usually removes large particulate matter and suspended solids in wastewater through physical or chemical methods to create conditions for subsequent treatment. It will also convert refractory organic matter into easily degradable substances through the generation of strong oxidants through advanced oxidation technologies such as fenton oxidation and ozone oxidation. The metabolism of microorganisms is used to remove organic matter from wastewater. For high-concentration wastewater, a combination of anaerobic, aerobic and other processes may be used to improve the treatment effect. Dissolved substances in wastewater can also be removed by physical means through membrane separation technologies such as ultrafiltration and reverse osmosis. It is used to remove heavy metal ions in wastewater through heavy metal treatment technologies such as chemical precipitation, ion exchange, and adsorption.
Therefore, for high-concentration sewage treatment equipment, it is very important to ensure that the effluent meets the standard, reasonably select the treatment process, strictly control the treatment process, strengthen pretreatment, optimize the operating parameters, and regularly monitor and evaluate.
Due to the particularity of its water quality, high-concentration wastewater treatment has strict technical requirements for equipment, and it is necessary to have good product technology, project experience, and ideas according to local conditions to ensure that the effluent of high-concentration wastewater treatment equipment meets the standard. Liding Environmental Protection is a senior factory in the sewage treatment industry for ten years, based in Jiangsu, radiating the whole country, facing overseas, with a strict product technology and quality control team.