Technical index and application of polyaluminum chloride (PAC)

[Technical index] GB 15892-2003 water treatment agent polyaluminum chloride

Note: The mass fraction of impurities such as ammonia nitrogen, arsenic, lead, pot, mercury, and hexavalent chromium are calculated as 10.

[Application] Polymerization aluminum chloride is a new inorganic polymer coagulant, the current industrial production technology is mature, applications are most widely used species, has become a mainstream product production and application polyaluminum flocculant earlier Japanese market , Was officially put into industrial production and application in the late 1960s

This product is a cationic inorganic polymer coagulant.

Polyaluminum chloride has strong adaptability to water treatment, especially for high turbidity water treatment effects, such as in urban and industrial water supply treatment, it is suitable for any water source water quality treatment and its recycling purification treatment process, especially for Various types of raw water treatment with serious micro-pollution, pure water pretreatment, and water circulating purification treatment in thermal power plants

In addition, when polyaluminum chloride is used, there will be a problem of uneven mixing, and it can be added after being diluted

Polyaluminum chloride can also be combined with weak cationic polyacrylamide , aluminum sulfate or ferric chloride for sludge conditioning

With the development of industry, the discharge of industrial wastewater and sewage is increasing, and the pollution caused by them has seriously threatened people's health.

At present, oily wastewater is generally treated at home and abroad by "oil-gas flotation, coagulation sedimentation and aeration biochemical methods"

When using coagulation to treat petrochemical wastewater, polyaluminum chloride has better flocculation performance than traditional flocculants such as aluminum sulfate or even polyiron, especially for high-efficiency polyaluminum.

The papermaking industry has a large amount of wastewater discharge, and the middle-stage water accounts for a large proportion, and many paper-making companies' black liquor is mixed with the middle-stage water after pretreatment (anaerobic, strong acid treatment, cellulose separation, neutralization, etc.

Li Deyou et al.