Several technologies for sulphur recovery from solid waste containing sulphur generated during sulphuric acid production and sulphonation and liqiud waste containing sulphates generated in phosphoric acid manufacture are described.

Experiments were conducted to investigate the influence of additives CaO, Fe2O3 and Al2O3 on bed sintering, while waste salty liquids are treated in fluidized bed with sand or coal ash as bed material.

Researches on the analysis of saline wastewater fromsteam boiler and its reuse technique;

Complete aerobic granulation could be achieved in shaking sequencing batch reactors(SSBR) with saline wastewater respectively inoculated conventional activated sludge and anaerobic granules.

Furthermore,the effect of nitrite accumulated in the process of nitrification on aerobic phosphate uptake was studied in saline wastewater treatment.

Several parameters which include salinity, pH, NH~+4-N and temperature are studied to evaluate their effects on the shortcut nitrification-denitrification in the treatment of salinity wastewater with SBR process.

It is necessary to put emphasis on the biological treatment of salinity wastewater.