Pharmaceutical wastewater, as the name suggests, is the wastewater produced by a pharmaceutical factory in the production of Chinese patent medicines or western medicines. Pharmaceutical wastewater mainly includes four categories: antibiotic production (biopharmaceutical) wastewater, synthetic drug production (chemical pharmacy) wastewater, Chinese patent medicine production wastewater, and washing water and washing wastewater from various preparation production processes. The discharged waste water not only contains high concentration of organic pollutants, but also contains various factors that inhibit the growth of microorganisms. If it is discharged without treatment, it will cause serious harm to water resources, and such waste water will carry indirect or direct infectious viruses, Bacteria, improper handling can cause water-borne diseases. Therefore, Capitel Chemical has developed a special polyacrylamide PAM for wastewater treatment in pharmaceutical factories. Polyacrylamide for pharmaceutical wastewater.
The production process of medicine determines the characteristics of pharmaceutical wastewater. The production of drugs is to obtain APIs through chemical synthesis processes and separation and purification from medicinal plants. Due to the different types of drugs, different production processes and complex processes, there are many types of raw and auxiliary materials, and the production process has strict control over raw materials and intermediates. The net yield is low, and the by-products are many, resulting in pharmaceutical wastewater with large differences in composition, complex components, many pollutants, high COD, low ratio of B0D5 and CODcr and large fluctuations, poor biodegradability, many refractory substances, and toxicity The characteristics of strong, intermittent discharge, and large fluctuations in water quality and pollutant types have brought great difficulties to governance. Sewage treatment polyacrylamide.
The use of polyacrylamide in the pharmaceutical industry spawns organic compounds that are more complex, harmful and living substances that are difficult to degrade than pollutants and sewage, resulting in serious water pollution. Obviously, it is also related to the acid and alkali of industrial sewage, and local sewage includes high salt. These special properties make pharmaceutical wastewater a difficult type of sewage in the water treatment industry. The pharmaceutical industry wastewater mainly covers four types of wastewater produced by antibiotics, wastewater produced by synthetic drugs, wastewater produced by Sinopharm, and washing water and washing wastewater of various preparation processes. The special properties of wastewater are complex composition, high organic content, deep chroma, high internal significance, especially poor blooming, and intermittent discharge, which belongs to industrial wastewater treatment.
The pharmaceutical industry wastewater mainly includes four categories: antibiotic production wastewater, synthetic drug production wastewater, Chinese patent medicine production wastewater, and washing water and washing wastewater from various preparation production processes. The wastewater is characterized by complex composition, high organic content, deep color and high salt content, especially poor biochemical properties, and intermittent discharge, which is difficult to treat industrial wastewater. With the development of my country's pharmaceutical industry, pharmaceutical wastewater has gradually become one of the important pollution sources. How to deal with this type of wastewater is a difficult problem in environmental protection today.
Coagulation is a commonly used physical and chemical method in the treatment of pharmaceutical wastewater. By adding a coagulant to reduce the concentration of pollutants and improve the biodegradability of the wastewater, the commonly used coagulants include polymeric ferric sulfate, ferric chloride, ferrous salts, and polymerization Aluminum chlorinated sulfate, polyaluminum chloride, polyacrylamide (PAM), etc., coagulation has a wide range of applications in pharmaceutical wastewater, as well as traditional Chinese medicine wastewater. Essential to its coagulation and sedimentation is PAM polyacrylamide flocculant, which can quickly and effectively precipitate suspended particles, drug residues, and raw materials in pharmaceutical wastewater, reduce the concentration of pollutants, and improve the biodegradability of wastewater performance.Polyacrylamide for pharmaceutical wastewater.
After many researches and tests by Capitel chemical technicians, generally if it is a biochemical sludge treatment, the cationic polyacrylamide product with higher ionicity is selected, and if the organic concentration is high, the cationic polyacrylamide with an ion degree of 60 or more The effect is better, if it is electrolytic treatment or pre-stage air flotation treatment. According to the water quality of sewage, the key technical index is to judge the selection of cationic polyacrylamide flocculant according to the pH value. Generally speaking, if the pH is less than 7, non-ionic polyacrylamide is often used as a coagulant aid or sludge concentration. Precipitant. If the pH is above 7, anionic polyacrylamide is commonly used.
1. Determine the best model and dosage through a small test;
2. The product is formulated into an aqueous solution with a concentration of 0.1-0.3% (referring to solid content), and salt-free neutral water is appropriate;
3. When dissolving the water, please evenly sprinkle this product into the stirred water, and increase the temperature appropriately (<60oC) to accelerate it into a solution (the stirring time is about 40 minutes is better);
4. When preparing the polyacrylamide aqueous solution, it should be carried out in enamel, galvanized, plastic or aluminum barrels, and cannot be prepared and stored in iron containers;
5. When dissolving, you should also pay attention to adding the product to the dissolver with stirring and heating measures evenly and slowly. Avoid solidification. The solution should be prepared at a suitable temperature, and long-term excessive mechanical shear should be avoided. It is recommended that the agitator be 60-200 revolutions/min, otherwise it will cause polymer degradation and affect the use effect;
6. The PAM aqueous solution should be prepared for current use. When the solution is placed for a long time, its performance will gradually decrease depending on the water quality;