01073nas|a2200265 i 4500 20260818113742.0 201198s1990 th uzm rtt 00| a1eng d .b10279271 AIT Research Report no. 241 Chongrak Polprasert Final report on upgrading and management of sludge treatment facility at North Bangkok Water Treatment Plant / by ... [et al.] Upgrading and management of sludge treatment facility at North Bangkok Water Treatment Plant Bangkok : Asian Institute of Technology, 1990 90 p. Research report ; no. 241 At head of title: Metropolitan Waterworks Authority of Thailand Water Purification Sewage Purification Activated sludge process Thailand. Metropolitan Waterworks Authority of Thailand Asian Institute of Technology. Research report ; no. 241 .b10279271 mnait y 230313 1 951012 m a y 0 44449 44449