Description: The book outlines that treatment system for 2 wastewater includes an electrolytic reactor, which has a first chamber, a second chamber and a conduit. The first chamber is configured for accumulating the wastewater entering therein. The second chamber has a pair of electrodes configured to produce an electric field. The conduit is configured to connect the first chamber to the second chamber.The system is configured such that a flow of the wastewater through the electric field is substantially laminar. The treatment system also chides precious metal recover system as well as various filtration and sedimentation apparatuses including a semi-permeable envelope filter.