In order to select the optimal water source for seawater desalination project in HebeiProvince,water intake tests were carried out in the coastal waters of Hebei Province in August2016.50 stations were set up and 50 water samples were collected.The sample tests included:pHvalue,turbidity,pollution index SDI,dissolved oxygen,free chlorine,manganese,iron,suspendedsolids,oil,and particle size of suspended solids.The evaluation results showed that the indicatorsexcept for suspended matter of coastal monitoring stations in Hebei Province can meet the LT-MED system of water requirement.The suspended solids exceed the standard in the west of Ca-ofeidian waters and east of Cangzhou waters,which can be pretreated by integrated efficient coag-ulation sedimentation equipment of Veolia.The east of the Daqinghe River waters can be pretrea-ted by general clarification filtration process.The results also showed that all stations could not satisfy the direct water requirements of RO system,but some stations could meet UF of RO pre-treatment device inlet requirements,whose most influencing index is turbidity.On the north side of Huanghua port,west of Caofeidian port,the Daqinghe River estuary and the Luanhe River es-tuary,the stations do not meet the requirements of the water inlet,while the other stations meet. The reverse osmosis is not suitable for the Cangzhou waters and the west of Caofeidian waters. The sea area from the east of Caofeidian to the Daqinghe River can take general coagulation,clari-fication,filtration treatment process.The east of the Daqinghe River can be pretreated by UF.%为了在河北省近岸海域给海水淡化项目选出水质优质的水源地,笔者于2016年8月对河北省近岸海域进行取水测试.一共布置了50站位,采集了50件水样,样品测试内容有:pH值、浊度、污染指数SDI、溶解氧、余氯、锰、铁、悬浮物含量、油类、悬浮物颗粒平均粒径.评价结果显示:河北省沿海监测站位除了悬浮物指标其他指标均满足低温多效蒸馏法海水淡化系统进水要求外,悬浮物在曹妃甸以西海域和沧州黄骅港以东海域超标,进行淡化预处理可采用威立雅公司提供的一体化高效混凝沉淀设备进行预处理,大清河以东海域可以采用一般的澄清过滤工艺进行预处理;各站位均不满足反渗透法淡化系统直接进水要求;部分站位满足反渗透法超滤预处理装置进水要求,影响进水要求的指标为浊度,在沧州港池北侧及曹妃甸港以西、大清河口和滦河口岸边不满足进水要求,其他站位均满足进水要求.沧州海域和曹妃甸以西海域不适合采用反渗透法进行淡化.曹妃甸以东至大清河之间可采取一般的混凝、澄清、过滤进行处理工艺.大清河以东海域可以采用超滤进行预处理.
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