A membrane composite includes at least two 3D-printed layers extending in an x-y plane and including a first plurality of interlaced strands forming a first plurality of interstitial spaces defined by first inner surfaces of the interlaced strands, and a polymeric coating coated on a surface of the at least two 3D-printed layers and on the first inner surfaces of the first plurality of interstitial spaces to form pores, wherein the polymeric coating is adapted for wastewater filtration. A method of producing the membrane composite.