Polymeric ferric sulfate coagulation treatment of pharmaceutical wastewater, pharmaceutical wastewater treatment, we must first understand the difficult to deal with the pharmaceutical wastewater, pharmaceutical wastewater has what characteristics? It has a high concentration of organic matter, color is also quite high, and contains many difficult to degrade and microorganisms toxic substances in it, there is a big pharmaceutical wastewater treatment problems that water quality is very complex, can be polyferric sulfate coagulation Very poor chemical properties and so on. Since the beginning of 1990s in our country, the pharmaceutical industry has developed rapidly. Today, the treatment of pharmaceutical wastewater has become one of the most important problems in handling pollution in China.
Pharmaceutical wastewater treatment methods are mainly divided into physical treatment, chemical treatment, biochemical treatment and a combination of methods to deal with several major treatment methods. Today, we focus on the physical and chemical treatment using polymeric ferric sulfate coagulation method for the treatment of pharmaceutical wastewater. At present, China's physical and chemical treatment methods for pharmaceutical wastewater mainly include coagulation, air flotation, adsorption, ammonia stripping, electrolysis, ion exchange and membrane separation. However, the most commonly used coagulation method is to treat pharmaceutical wastewater as a method of water quality. It is widely used in pharmaceutical wastewater pretreatment and post-treatment process, such as aluminum sulfate and polyferric sulfate for the use of traditional Chinese medicine wastewater. The key to efficient coagulation is the proper choice and addition of superior coagulants. In recent years, the development of coagulants from low molecular to polymeric polymer development, the composition of a single type of compound function to the development. By the composition of a single type of compound function to the development. Through the experiment, we also found that when the pH value is 6.5 and the flocculant dosage is 300 mg / L, an efficient polyferric sulfate complex flocculant F-1 is used to treat the waste water COD, SS and chromaticity The removal rates of them were 69.7%, 96.4% and 87.5% respectively. Their performances were obviously better than single flocculants such as PAC (PAC) and polyacrylamide (PAM).
Chemical treatment of pharmaceutical wastewater and biochemical treatment methods We also do a brief introduction here. Chemical treatment methods include ferric method, chemical redox (fenton reagent, H2O2, O3), deep oxidation and so on. However, we need to pay attention to that when using chemical treatment methods to dispose of pharmaceutical wastewater, some over-use of reagents easily lead to secondary pollution of water bodies. Therefore, we are using this method on the premise that sufficient safety research is done. Biochemical treatment methods include aerobic biological method, anaerobic biological method, aerobic - anaerobic combination method.
First consider your precipitant (polyaluminum chloride) is not out of date, and then check the PH value of water quality, PH value is too high or too low, will
The polymerization of ferric sulfate turbidity in the application of the effect is very good, and with no residual ferric ion reaction completely suspended soli
Can not: ammonia nitrogen (N) content% ≤ 0, so the content of its other substances is very high. For example .0005 Cadmium (Cd) content% 0.0001 Mercury (Hg) co
Mercury and other heavy metal ions, the chemical formula is [AL2 (OH) NCL6-NLm] where m represents the degree of polymerization, can effectively remove the wate