tandardofclass?havebeenobtained.The pression,sedimentation,filtrationandstabilityforthesettledsludge havealsobeenimprovedevidently. ONDESIGNOFASHSETTLERWITHINCLINEDTUBULARPACKAGE,,ZhaoYuhuetal(34) Abstract:Themaindesig np arametersofaninclinedtubesettertotreatboilerwastewater forashremovalaredeterminedby exp erimentalandp racticaluse.Thep erformanceofthisfa- cilityhasshownthattheresultissatisfactory.TheaveragesofSSandCOD Crintheeffluentare <200mg /land150mg /lresp ectively tomeetthereq uirementofwater-body classòofthe NationalInteg ratedWastewaterDischarg eStandardGB8978-88. Abstract:Inthiscountry attentionsp aidtothebuilding hotwatersy stemarebeing transferringfromlowconsumptionandhighefficiencytosafetyandreliableoperation.The SAFETYCONTROLOFBUILDINGHOTWATERSYSTEM,,,,,,RuanJichengetal(36)
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