The application range of polyaluminium chloride is very wide. Today we will learn about the important functions of polyaluminium chloride. Polyaluminium chloride PAC water treatment flocculant is mainly used as a flocculant for the treatment of drinking water, production water and industrial wastewater (such as oily wastewater, printing and dyeing, papermaking wastewater, steel plant wastewater, etc.), as well as the treatment of highly toxic heavy metals and fluorine-containing wastewater; in addition, it is also widely used in precision casting, leather making, etc. Mining process wastewater, metal mine mining wastewater mainly contains suspended matter and acid, generally contains one or several metals, non-metals, mainly calcium, iron, manganese, lead, copper, etc. Ironmaking process wastewater, blast furnace gas washing is the main wastewater of the ironmaking process, containing a large amount of suspended solids, its main components are chlorides such as iron, zinc and silicon, steel mills' steel rolling pickling, especially stainless steel surface pickling and descaling, can also produce metal wastewater containing iron, zinc, lead, etc.
Wastewater from metal processing is mainly acidic waste liquid generated by cleaning and rust removal of metal surfaces. Metal materials are mostly pickled with sulfuric acid and hydrochloric acid, while stainless steel is pickled with a mixture of nitric acid and hydrofluoric acid. After pickling, the steel is rinsed with clean water to produce rinsing acidic wastewater. Generally, the waste liquid remaining after rinsing contains about 7% acid, which contains a large amount of dissolved iron, and the pH value of the rinse water is 1-2. Acidic waste liquid and rinse water, if discharged without treatment, will inevitably cause serious pollution.
Wastewater from electroplating process, electroplating wastewater mainly comes from the rinsing of plated parts, and a small amount of process waste liquid is also discharged. The water quality of electroplating wastewater varies according to the type of plating and the electroplating process. Generally speaking, the metals in electroplating wastewater are relatively simple. Although the amount of water is small, its concentration is often high and toxic. It mainly contains acid and metal ions such as copper, chromium, zinc, and cadmium. The use of polyaluminum chloride PAC water treatment flocculant to remove heavy metals in water is mainly through the reaction with the salts of substances in the water to generate large precipitable substances to achieve the effect of water purification. Some heavy metal salts dissolved in water are inert and may not react with polyaluminum chloride PAC water treatment flocculant. Therefore, although polyaluminum chloride PAC water treatment flocculant can remove some heavy metals in water, it is absolutely undesirable to use polyaluminum chloride to remove heavy metals in water. To remove heavy metals in water, it is necessary to select appropriate agents according to the content and type of heavy metals in water to achieve the desired effect. Heavy metals are a pollutant. For heavy metal wastewater, proper treatment must be carried out. Efforts should be made to reduce the amount of wastewater, try to recover its useful metals, and recycle the wastewater after proper treatment, and try not to discharge or discharge less wastewater. Wastewater to be discharged should be purified to meet discharge standards; sludge and concentrated liquid produced, if not worth recycling, should also be rendered harmless to avoid secondary pollution.
The main products of flocculant manufacturer Xinhuan Water Treatment are:
White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polyferric aluminium chloride and other water treatment chemicals. Welcome customers to write to us to negotiate business! Tel/WhatsApp：+8619003830067 Email：joanna@xhwtm.com Contact:Joanna
