As a high-efficiency coagulant, polyaluminum chloride has high-efficiency adsorption capacity, can quickly and effectively form dense and large alum. Therefore, it is usually used as a coagulant in the treatment of industrial wastewater, which can effectively remove the sewage containing heavy metal ions, radioactive substances, deodorization, sterilization, aluminum and other impurities. So no matter what kind of sewage can achieve a good water purification effect, make the water quality clean and safe.
Light yellow powder
Industrial Waste water
PH value (1% aqueous solution)
Water insoluble %
25 kgs PP bag;20 kgs PE bag; Ton bag
They shall be sealed and stored in the dry and ventilated place to prevent from rain, high temperature and strong sunlight.
Advantages of Polyaluminum Chloride PAC
- Excellent coagulation, flotation and sedimentation.
- Excellent phosphorus removal effect.
- Produce the least chemical sludge.
- The coagulation efficiency of polyaluminum chloride is significantly higher than that of traditional coagulants, and it has a wider range of applications.
- With stable chemical properties, PAC can be stored for a long time without deterioration.
- PAC wastewater treatment is low-cost and effective water purifier.
- Suitable for various water quality.
Uses of PAC for Wastewater Treatment
PAC polyaluminum chloride can be used for the treatment of domestic sewage and various industrial wastewater, such as printing and dyeing wastewater, leather wastewater, fluorine-containing wastewater, heavy metal wastewater, oily wastewater, papermaking wastewater, coal washing wastewater, mine wastewater, brewing wastewater, metallurgical wastewater, meat processing wastewater, etc. .
Domestic sewage treatment. Domestic sewage is wastewater directly discharged by residents in their daily lives, and the main components are feces and washing wastewater. The content of nitrogen, sulfur, and phosphorus in domestic sewage is relatively high. In order to remove a large amount of cellulose, starch, sugar, fat protein and other organic matter in the water, a special process needs to be used in the treatment. The coagulation process needs to use polyaluminum chloride for pretreatment to precipitate larger impurities in the water. However, polyaluminum chloride can’t completely remove the micro-suspended particles in water, so it is necessary to use cationic polyacrylamide to precipitate the micro-suspended particles. When treating wastewater and washing wastewater generated from daily domestic water, oily dirt and dust particles interact with a large amount of surfactants in the water to form negatively charged colloidal particles, which are easy to be fixed and retained in the water. Adding an appropriate amount of polyaluminum chloride to the wastewater will produce positively charged cations and multi-nuclear high-charge coordination ions, which can make the charges suspended on the surface of the colloidal particles have the ability to adsorb and neutralize and compress the electric double layer.
Hospital wastewater treatment. Hospital wastewater contains a lot of organic compounds, if not treated in advance, it will cause harm to the environment. The coagulation method can be used in the sewage treatment plant to carry out the physical and chemical treatment of hospital wastewater. The coagulation method requires the coagulant to minimize the organic content in the water treatment. It is recommended to use PAC coagulant in the coagulation process of hospital wastewater.
Wastewater treatment in paper mills. The black liquor produced in the paper industry is pretreated and mixed with the intermediate water for treatment, and then the harmful substances in the papermaking wastewater are added. Polyaluminum chloride used to treat mid-stage water in papermaking, due to the addition of basicity, the removal rate of COD and SS will also be added, but when the basicity reaches 75%, the removal rate won’t be added but will decrease. According to certain standards, the use of polyaluminum chloride to treat papermaking wastewater can make the effluent reach the national discharge standard, and it will not cause secondary pollution.
Treatment of printing and dyeing wastewater. Printing and dyeing wastewater contains a large amount of COD, PH value and chroma. Although the coagulation effect of polyaluminum chloride is good during use and the dosage is relatively low, polyaluminum chloride has poor neutralization ability to the high alkalinity of printing and dyeing wastewater, and its application will also be limited. Using the complementary advantages of the two coagulants and the synergistic effect of the same ion effect to treat printing and dyeing wastewater can not only reduce the treatment cost, but also improve the treatment effect.
Oily wastewater treatment. Oily wastewater refers to oily wastewater discharged from oilfield extraction water, oil refineries and petrochemical plants. It can be treated with oil separation sedimentation, air flotation and biochemical treatment. Modified cationic polyacrylamide and polyaluminum chloride are used together, and the treatment effect is particularly obvious. The relative molecular weight of modified cationic polyacrylamide should not be too high, and it is easy to compound with PAC wastewater treatment to achieve the desired effect.
Polyaluminum chloride also has a phosphorus removal effect. It can form deposits with phosphate radicals in wastewater, and is suitable for phosphorus removal in sewage plants. Polyaluminum chloride is usually used as a coagulant. Due to the different effects, the concentration of the solution and the dosage are very different. The dosage can be determined according to the turbidity of the raw water by doing a small product test.