A new process has been developed in treating train laundry wastewater for recycling. In the work, the process of coagulation-sedimentation and SBR has been researched, the results has shown that the characters of the wastewater was great improved by coagulation-sedimentation under the conditions of 80mg/L of PAC as coagulant and 30mg/L of APAM as coagulant aid, and then by SBR under the conditions of 2.0h of anaerobic time, the effluent concentration could achieve the reuse standard of GBT18920-2002, and it could be applied for miscellaneous use.

This paper study on PAC-UF process for treatment of micro surface polluted water, found that PAC-UF process can effectively remove 83% CODcr, 55% NH3-N and 81% UV254, it shown that PAC-UF process had good treatment effect to micro surface polluted water, thus adding PAC can improve the treatment effect and alleviate membrane fouling. The material and influence of hydrophobic were analyzed and found that PVDF membrane had better performance.

Industrial Wastewater Treatment is one of the main special courses offered to undergraduate students whose major is Environmental Engineering. It aims to let students know basic knowledge and control technologies of industrial wastewater pollution, so that they can solve problems arising from industrial wastewater. With development of nowadays industrial wastewater treatment technology, it requires to be constructed to keep the teaching content up-to-date with current industrial wastewater treatment. Based on analysis of the current conditions of this course, it describes construction process, including revision of the teaching content, improvement of teaching methods and class mode, compiling of test database and exercise database.

In this paper, a mathematical model of aerobic BAC (biological actived carbon) system is developed based on previous work. The BAC model is divided into two parts, the system model and GAC(granular activated caarbon)/ biofilm particle model. Changes in substrate and biomass concentration in bulk fluid, solid phase volume change as a result of biofilm growth and other operation parameters are included in the system model. GAC/biofilm particles are considered as substrate sinks in this part of the model. In the GAC/biofilm particles model, substrate uptake resulting from biodegradation and carbon adsorption are computed simultaneously.

The improvement of Kraft Liner board strength, including burst index, ring crush index , inter-layer binding strength and folding endurance was investigated. The performance of several WEC paper chemicals were compared to select the optimum one and the most appropriate level. It was found that: (1) with respect to bottom liner board pulp, the optimum furnish was experiment G-3 with the dosage of 0.3% WEC03S + 0.2% WEC02 , while ring crush index being increased by 47.6% , folding endurance by 50.0% and burst index by 20.7%. (2) in terms of three layers composite structure of linerboard, the optimum furnish was experiment E-4 with the dosage of 0.3% WEC03S + 0.1% WEC02 +0.04% WEC02A for cover layer , that of 0.3% WEC02 + 0.03% WEC02A for bottom layer , and that of 0.03% WEC02A for core layer.