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For the purpose of pollutant load analyses for the calculation of pollutant loads per capita flowing into the water body (PLCwb) and preparation of environmental accounting housekeeping (EAH) books in the developing countries, the preliminary surveys and secondary information/data collection were conducted in Thailand and Bangladesh, in autumn and winter in 2006. Water quality and quantity (flow rate) were analyzed in the rivers and canals in and around Bangkok, Thailand, and a river and inner-city lakes in and around Dhaka, Bangladesh. Water depth, water temperature, salinity, electricity, density, turbidity, chlorophyll a were monitored vertically with a compact type water quality recorder, Compact-CTD ⊗(ALEC electricity, Japan). Other parameters including TOC, CODCr TN were measured in the laboratories. Pack Tests ⊗(Kyoritsu Chemical, Japan) were used to analyze CODMn, PO4-P, NO2-N and NO3-N to investigate their effectiveness in monitoring the water quality in these rivers and lakes. In the Sitalakhaya River, vertical homogeneity was observed with the parameters measured with the water quality data logger. The characteristics of water quality in the estuary area in the rivers in Bangkok were observed. The Pack Test measurements were identified effective to illustrate water quality profiles of the water environment in the river and the three lakes in and around Dhaka, and two rivers and a canal in and around Bangkok. Based on the results of the field survey and secondary data, recommendations were proposed for the water quality improvement in the surface water.

chikyuu kankyou shimpojiumu kouen rombunshuu

Pollutant discharge and pollutant load in the tidal area of the rivers in the developing counties: Survey results in the autumn and winter in 2006 and desirable direction for water quality improvement