Suitable　draw　solutes　are　crucial　to　maximize　the　potential　of　forward　osmosis　(FO)　in　water　treatment.　In　this　study,　a　novel　three-dimensional,　multicharge　draw　solute　of　oxalic　acid　(OA)　chromium　complex　in　a　tetramethylammonium　salt　of　[N-(CH3)(4)](3)[Cr(C2O4)(3)]　(NMe4-Cr-OA)　was　developed　for　electroplating　wastewater　treatment　using　FO　processes.　The　newly　designed　NMe4-Cr-OA　has　a　Cr-centered　octahedral　structure　and　can　ionize　a　multicharge　anion　[Cr(C2O4)(3)](3-)　and　three　cations　[N(CH3)(4)](-)　in　its　aqueous　solution.　Such　characteristics　are　conducive　to　not　only　generating　a　high　osmotic　pressure　but　also　minimizing　reverse　solute　flux　in　an　FO　process,　thus　resulting　in　good　FO　performance.　A　high　water　recovery　with　a　negligible　reverse　solute　flux　was　achieved　for　NMe4-Cr-OA　in　electroplating　wastewater　treatment　via　the　FO　process.　Furthermore,　a　significant　increase　of　77%　in　FO　efficiency　was　obtained　when　NMe4-Cr-OA　replaced　the　conventional　draw　solute　of　NH4HCO3　for　FO　electroplating　wastewater　treatment　with　a　copper　rejection　higher　than　99.9%,　which　surpasses　the　best　performance　of　other　technologies　reported　for　copper　ion　removal.