Polymeric ferric sulfate is an inorganic polymer coagulant with superior performance, the liquid is tan, the solid is a light yellow amorphous powdery solid, very soluble in water, 10% (mass) aqueous solution is a reddish brown transparent solution, and the solid product has strong hygroscopicity. Polyferric acid sulfate is widely used in the purification of domestic drinking water, industrial water, various industrial wastewater, municipal sewage, sludge dewatering, etc.
Polymeric iron sulfate applications
Polymeric ferric sulfate in rare earth industrial wastewater treatment: this is not only the goal of reduction, stability and harmlessness of sewage treatment and disposal in the country; Strictly controlled content of heavy metals and toxic and polymeric iron sulfate harmful substances in rare earth industrial wastewater; Under the premise of safety, environmental protection and economic recovery, the energy and resources of wastewater and polymerized iron sulfate waste gas are used to achieve the purpose of wastewater and waste gas treatment and comprehensive utilization, energy conservation and emission reduction, and realization of circular economy development.
Polymeric ferric sulfate uses a combination of dielectric electrophoresis technology and osmotic membrane separation technology to treat sewage reuse, realize wastewater treatment technology innovation and scientific and technological progress, give full play to the investment and operation efficiency of equipment, suitable for China's national conditions, in line with the characteristics of Inner Mongolia Autonomous Region wastewater treatment new technology, polymeric ferric sulfate new technology and new equipment. If the new technology is widely applied, it will improve the treatment and disposal level of industrial wastewater of mining enterprises in the region, further protect and improve the ecological environment of polymeric ferric acid, and promote our economic, social and environmental sustainable development in the region.
Characteristics of polymeric iron sulfate treatment in oily wastewater
Flocculation technology is widely used in the treatment of oily wastewater due to its strong adaptability, the ability to remove emulsified and dissolved oils, and some complex polymer organics that are difficult to biodegrade. Commonly used flocculants mainly include inorganic flocculants, organic flocculants and compound flocculants.
Inorganic polymer flocculants such as polymeric aluminum chloride and polyferric ferrulate have good processing effect, low price and small dosage, high efficiency and wide application.
Industrial wastewater treatment
1, printing and dyeing wastewater treatment, instead of the traditional low molecular weight iron salt and aluminum salt coagulant, relative to the traditional coagulant dosage is large, low coagulation efficiency, aluminum ions and other residues easy to cause secondary pollution characteristics, polymeric iron sulfate dosage of about 150ppm, its dosage is small, the COD and chromaticity removal rate is high, the best ph condition is: 8.0. [2]
2, electroplating sewage treatment, can be used as coagulant and cracking agent. The complex is mainly a copper-ammonia complex, which is stable in nature, pH = 11, and it is difficult to directly precipitate with coagulants such as alkali and polyalumin. It can also be used as a reclaimed water reuse.
3, papermaking wastewater treatment, instead of polyaluminum chloride, aluminum sulfate, etc., used as a coagulant, can also be used as papermaking sludge dehydration, in the papermaking wastewater treatment whitewater recovery process can not use poly-ferric sulfate (polymer containing strong cations), can only use polyaluminum chloride.
This product can be added directly, or the dissolved tank is added first, the concentration is 10 to 20%, stirred, and the pump is added to the reaction tank. This product has a wide range of pH, which is more effective under acidic conditions, which is about 100 ~ 1000ppm (ie 0.1 ~ 1 kg / ton wastewater), which is different depending on the amount of phosphate in wastewater. The specific amount is generally determined by experiments.
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A certain amount of raw water is taken to add an appropriate amount of this product (such as 500 ppm) to adjust the pH of the wastewater to 7 to 8, and a small amount of polyacrylamide PAM flocculation precipitate is added, and the supernatant is filtered to determine the content of phosphorus. (To handle heavy metals, use the supernatant to carry out the secondary processing.)
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