Application range and method of polyaluminium chloride and industrial wastewater
Application of polyaluminum chloride:
1, polyaluminum chloride as flocculant used in drinking water, domestic water and industrial sewage (such as oily sewage, printing and dyeing, coal washing water, paper sewage, steel mill sewage, etc.) treatment, as well as high toxic heavy metal, fluoride sewage treatment; In addition, it is widely used in precision casting and tanning.
2, urban water supply and drainage purification: river water, reservoir water, groundwater, industrial water supply purification, urban sewage treatment, industrial wastewater and waste residue in the recovery of useful substances, coal washing wastewater to promote coal powder settlement, starch recovery, etc. Starch manufacturing,
3, all kinds of industrial wastewater treatment: printing and dyeing wastewater, leather wastewater, fluoride wastewater, heavy metal wastewater, oily wastewater, papermaking wastewater, coal washing wastewater, mine wastewater, brewing wastewater, metallurgical wastewater, meat processing wastewater, sewage treatment, papermaking additives, cloth strengthening agent, catalyst carrier, pharmaceutical refining, cement accelerator, cosmetic raw materials.
Production process and application method of polyaluminum chloride:
With the improvement of water quality requirements, polyaluminum chloride is developed according to the monitoring files of raw water quality with high temperature and high corrosion, low temperature and low corrosion, algae and trace chemical substances in the south and north of China. The methods of adjusting formula and improving process are adopted. Has launched a series of polyaluminum chloride products: polyaluminum chloride, basic aluminum chloride, ferric chloride, aluminum sulfate, composite iron, etc.
In order to achieve flocculation effect and economic benefit of polyaluminum chloride polyaluminum chloride coagulant anionic polyacrylamide, polyaluminum chloride users can determine the dosage according to different turbidity of raw water, different seasons and different pool types through experiments. Liquid products are prepared into 5-10% water solution and solid products into 3-5% water solution (by product weight). The higher the turbidity of raw water, the thinner the solution prepared. Increase the dosage, flocculation effect is better.
1. After solid polyaluminum chloride is dissolved in water at the ratio of 1:3, 10-30 times water is diluted to the required concentration before use.
2. The dosage can be determined according to the turbidity of raw water. Generally, when the turbidity of raw water is 100-/l, the dosage per thousand tons is 10-20kg.