Research on purification of styrene waste gas in low concentration by using a biological trickling filter;

The purification of Styrene waste gas using biological method and its currently applicable studies both at home and abroad were introduced in this paper.

The rate of absorbing the styrene waste gas in liquid absorption section was from 74% to 97.

The main results were shown as follows:(l)Using the microorganism that was developed by the item research team, to purify the styrene waste gas in low concentration, that is feasible in the biotrickling filter.

Research progress in preparation of special-purpose materials by making use of waste polystyrene;

Study on waste polystyrene emulsion grafted with acrylic acid;

With the widely use of polystyrene, problems of‘ white pollution’which was mainly caused by waste polystyrene are becoming more and more serious.

The assessment on the pretreatment process,the activated carbon adsorption and regeneration in the activated carbon adsorption facilities for treatment of styrene wastewater from a chemical plant is carried out,and the main factors causing that the final effluent quality has gone beyond the discharge limit are analyzed.

An experimental investigation on purification of ethylbenzene waste gas is conducted in a biofilter packed with ceramic pellets.

The bromination of waste polystyrene ( PS) was studied using the bromine content of brominated polystyrene ( BPS) as the testing index.

Recovery and reuse of waste polystyrene foam are being paid their attention to.