The recycling rate of HW in 2002 was 44%, but the technical
level of recycling was not advanced; e.g., some enterprises
recycled lead–acid batteries, waste oil, and electronic
waste without environmental protection facilities, and waste
water, waste gas, and solid waste were discharged directly,
leading to serious damage to the environment. Usually, the
local Environmental Protection Bureau has not enough
manpower and resources to supervise these enterprises.The
categories of HW generated in the highest quantities did
not have high recycling rates. For instance, the recycling rate
of waste alkali was only 29% and that of inorganic fluoride
waste was 38%. Meanwhile, the low recycling levels result
in secondary pollution during the recycling process