Drum-Dry Polyaluminum Chloride
|Views： Times Updated：19-12-31|
Roller-dried polyaluminum chloride is mainly used in smelting, chemical, printing and dyeing, papermaking, coal washing, steel mills, oil fields, oil refining, leather, radioactive wastewater, metal processing, coal preparation, food, dyes and other wastewater treatment. Widely used in industrial water and pure water pretreatment. Color is yellow or light yellow, dark brown, dark gray resinous solid.
Features and applications
Roller-dried polyaluminum chloride is mainly used in smelting, chemical, printing and dyeing, papermaking, coal washing, steel mills, oil fields, oil refining, leather, radioactive wastewater, metal processing, coal preparation, food, dyes and other wastewater treatment. Widely used in industrial water and pure water pretreatment. Color is yellow or light yellow, dark brown, dark gray resinous solid. Roller-dried polyaluminum chloride has strong bridging adsorption performance. During the hydrolysis process, there are physical and chemical processes such as coagulation, adsorption and precipitation. The fundamental difference between polyaluminum chloride and traditional inorganic coagulants is that traditional inorganic coagulants are low-molecular crystalline salts, while the structure of polyaluminum chloride is composed of polymorphic carboxyl complexes with variable morphology. Wide PH range, non-corrosive to pipeline equipment, obvious water purification effect, can effectively remove SS, COD, BOD, arsenic, mercury and other heavy metal ions in water. field. Product quality meets GB15892-2003 standard.
1. Chemical formula: [A L2 (O H) n C L 6-n] m where n = 1 ～ 5 m≤10
2. Physical and chemical properties: The appearance of the solid product is yellow powder or brown powder. It is an inorganic polymer coagulant. The fine suspended particles and colloidal particles are destabilized, aggregate, flocculate, coagulate, and precipitate to achieve the purification treatment effect.
Drum dry polyaluminum chloride features:
1. No additional auxiliaries are needed, the floc formation is fast and coarse, the activity is high, the precipitation is fast, and the purification effect of high turbidity water is particularly obvious.
2. Suitable for a wide range of pH values, lowering the pH value of raw water, so it has no corrosion effect on pipeline equipment. The suitable pH value range is wide (5-9), and the pH and alkalinity of the treated water are small.
3. Decoloration of waste water, removal of COD, BOD and SS, strong decontamination. The water purification effect is 4-6 times that of Al2 (SO4) 3 and 3-5 times that of AlCl3. Small dosage, high efficiency; low cost, high benefit.
4. For low temperature water treatment, it can still maintain a stable precipitation effect, meanwhile, the dosage range is wide, and excessive dosage is not easy to cause side effects, which is beneficial to workers' operation.
Application range of drum-drying type polyaluminum chloride:
1. Urban sewage treatment.
2. Recycling of useful substances in industrial wastewater and waste residue, promoting the settlement of coal powder in coal washing wastewater, and the recovery of starch in the starch manufacturing industry.
3. Various industrial wastewater treatment: printing and dyeing wastewater, leather wastewater, fluorine-containing wastewater, heavy metal wastewater, oily wastewater, papermaking wastewater, coal washing wastewater, mining wastewater, brewing wastewater, metallurgical wastewater, meat processing wastewater f, wastewater treatment.
Stir the solid polyaluminum chloride (at normal temperature) with water at 1: 3. After the medicine is dissolved uniformly for about 30 minutes, add 25-30 times water to dilute it, and then put it into water for operation. For domestic drinking water purification, the amount of medicine used is one hundred thousandth of the raw water, that is, the dosage (solid) per kiloton of water is about 15kg, and it can be used accurately. Sewage treatment can be found through experiments according to the water turbidity and content of the region Out dose. Before using, you can do a small test to find out the dosage, and then add it.
Next product： Spray type polyaluminum chloride