The immobilized microorganism technology is advantageous in increasing the concentration of microorganism and improving the efficiency of the wastewater treatment in solutions. This paper reviews the characteristics and the advantages of the immobilized microorganism in the PVA and the methods of the immobilization. The shortages of common methods (the physical crosslinking method and the chemical crosslinking method) are pointed out and relevant optimization techniques are proposed. The applications of the immobilized microorganism of the PVA in the wastewater treatment are discussed, as well as the advantages and disadvantages of the PVA in this area. It is important for the sustainability of the wastewater treatment to develop a simple immobilized microorganism technology with good microbial activity, high mechanical strength, and water-absorbing and swelling behavior.

immobilization microorganism  /  PVA  /  environmental protection