In the National "11th Five-year" period,the Liaohe River basin water pollution control acquired breakthrough progress.It eliminated water quality worse than class V for chemical oxygen demand(COD) in the mainstream of the whole river basin.In order to consolidate the control achievements of the Liaohe River mainstream,and to achieve long-term goal of sustainable development,Liaoning Provincial Government designated the mainstream of Liaohe as conservation area and established a conservation bureau.This is the first administration to be set up in China carrying out integrated basin management.So we do the research about the Liaohe River control and conservation.The goal of the research was to restore a healthy river ecosystem including flood control,good water quality,healthy ecology and beautiful landscape.It’s realize the integration of hydraulics,ecology,environmentology,landscape esthetics,economics and other interdisciplinary concept in ecological environment protection plan of China.It’s also considerate the interaction and relationships of hydraulic project,pollution control project,ecological restoration project and demonstration area construction project.We have completed five special researches of land use,ecosystem restoration,integrated river management,ecological demonstration area construction,and control and protection capacity establishment.

This paper systematically analyzed the relationship between the socio- economic and water pollutant emissions in Liaohe basin nearly a decade. Based on the pollutant emission intensity and GDP per capita indicators,the Liaohe basin COD and ammonia environment learning curves are established. Combined the situational analysis,predict water pollutant emission trends and the water environment pressure in the future,with the existing pollution control. The results show that the water environment pressure of the Liaohe basin is enormous. Based on the actual problems in Liaohe basin pollution control,a pollution governance model in Liaohe basin is proposed.

Based on the method of equivalent standard pollution load,the trend of pollutant emission discharged by industrial wastewater in the Liaohe River Basin in Liaoning province during five typical years before and after the policies of Reform and Opening-up and the Industrial Structure Adjustment,was analyzed in terms of spatial characteristics of industrial pollution sources.Detailed discussions were put on the regularity of spatio-temporal variation of major pollutants.Data shows that industrial pollution sources in Liaohe River Basin mainly distribute along the expressway,in the city blocks in central Liaonig province and its coastal areas,and present a trend of unceasing focus.The total amounts of discharged industrial wastewater and the pollutants show a continuously decreasing trend.The main pollutants discharge in the Liaohe River Basin are COD,ammonia nitrogen,volatile phenol and petroleum oil,and the organic pollutant discharged by the industrial wastewater is more than that of inorganic pollutants.There is a big variance in heavy metal pollution with the main heavy metal pollutant of Hg during 1985-1999,Cr,Pb and Cd during 2002-2005,and Pb,As and Cr in 2008.There exists an obvious trend of pollutant discharge transfer in different regions because the main discharge regions of volatile phenol,petroleum oil,lead and arsenic vary completely during these years,although there is no obvious change in the main discharge regions of COD,ammonia nitrogen discharge.

Pollutant emission intensity reflects the environment load of per unit economic value created. By employing the method of variance in determining index weights, regional differences in the emission intensity of main pollutants, which include waste water, COD, and nitrogen in 6 regional unites of the Liao River basins in 2006, were evaluated. The results show that the national average level of the overall emission intensity of these pollutants is 0.4411, and the values of 3 unites are smaller than others. In addition, the minimum values of each pollutant were identified and used as the target value for Liao River basins, from which the reduction potential of each control unit's main pollutants emission intensity was calculated. The results show that there are significant inter-regional differences in the reduction potential of the main pollutants emission intensity. Finally, The paper using the index "pollution contribute rate" analyses the main industry trades that produce COD and NH4-N and their area distribution in Liao River basins, points out the control emphasis.

In this paper,the performance and membrane fouling in an aerobic nitrifying granule membrane bioreactor(AGMBR)and an aerobic sludge membrane bioreactor(ASMBR)were investigated,which were operated under same conditions.Results showed good organics removal and simultaneous nitrification and denitrification(SND)performances during 102 days operation.COD,NH + 4-N and TN average removal efficiencies of AGMBR remained at 86%,94% and 45% respectively,when influent concentrations of COD and NH + 4-N were 500 mg/L and 200 mg/L .The membrane fouling of AGMBR was reduced effectively and the period of cleaning membrane was extended.In the AGMBR,membrane pore resistance is the main factor of the membrane fouling,which is 64.81% of the membrane total resistance.And the cake resistance of the AGMBR is 2.1×10 12 m-1,which is much smaller than 16.07×10 12 m-1 in the ASMBR.The period of cleaning membrane is at least 2.43 times longer as that in the ASMBR.New aerobic granule was produced and grown gradually during experiment operation,which ensure the stabilization of performance and operation in the AGMBR.

Based on the analysis of ecological functional regionalization and land construction suitability in Fushun city,the regionalization of feasible development in Fushun was carried out by logical combination planning method,it provided the theory foundation for the urban development in Fushun.