How to use physical and chemical polyaluminum chloride treatment of acid-base wastewater pH is one of the important values ​​in the field of water treatment, for the treatment of various types of wastewater regulation, and ultimately, the pH. At present, the industrial wastewater is also divided into two types of acid and alkaline treatment, we collectively referred to as acid-base wastewater. Due to the nature of acid and alkali, this kind of wastewater has strong corrosiveness and has interference with the treatment process, which will affect the water treatment effect. Therefore, in recent years, people often use the physicochemical method to deal with the regulation of water pH, Mainly the use of chemical additives to vote to deal with. The use of physical and chemical polyaluminum chloride treatment of acid-base wastewater effect: PAC due to a wide range of pH to adapt, so in recent years, industrial acid-base wastewater treatment often as adjuvant. Polyaluminum chloride is mainly used in the process, will not be affected by water pH, with strong adsorption capacity and dehydration performance, the removal of pollutants in water is high, the majority of users praise. The use of physical and chemical polyaluminum chloride treatment of acid-base wastewater advantages: The treatment of acidic wastewater needs to be measured according to the degree of acidity polyaluminium chloride dosage, and alkaline wastewater treatment is relatively easy to handle, because in alkaline Under the conditions is to give full play to the role of polyaluminum chloride, the water pollutants have rapid coalescence settlement, and without the need to add other additives, while the acidic waste water is required to add neutralizing agent to strengthen the treatment. At present, the use of physical and chemical polyaluminum chloride treatment effect relative to other treatment methods have more advantages, and the treatment effect is extremely obvious, coupled with acid-base wastewater treatment technology has gradually matured, there are many treatment technologies, and now for acid-base wastewater Also realized the treatment of reuse.