In　this　study,　the　sequential　process　of　anaerobic　fermentation　followed　by　microalgae　cultivation　was　evaluated　from　both　nutrient　and　energy　recovery　standpoints.　The　effects　of　different　fermentation　type　on　the　biogas　generation,　broth　metabolites＇composition,　algal　growth　and　nutrients＇utilization,　and　energy　conversion　efficiencies　for　the　whole　processes　were　discussed.　When　the　fermentation　was　designed　to　produce　hydrogen-dominating　biogas,　the　total　energy　conversion　efficiency　(TECE)　of　the　sequential　process　was　higher　than　that　of　the　methane　fermentation　one.　With　the　production　of　hydrogen　in　anaerobic　fermentation,　more　organic　carbon　metabolites　were　left　in　the　broth　to　support　better　algal　growth　with　more　efficient　incorporation　of　ammonia　nitrogen.　By　applying　the　sequential　process,　the　heat　value　conversion　efficiency　(HVCE)　for　the　wastewater　could　reach　41.2%,　if　methane　was　avoided　in　the　fermentation　biogas.　The　removal　efficiencies　of　organic　metabolites　and　NH4+-N　in　the　better　case　were　100%　and　98.3%,　respectively.　(C)　2016　Elsevier　Ltd.　All　rights　reserved.