The present invention relates to a method for conditioning water, sediments and/or sludges using alkaline earth metal peroxide, in particular calcium peroxide, and cable bacteria, to a kit comprising a composition comprising at least one alkaline earth metal peroxide and cable bacteria, and to uses of a composition which comprises at least one alkaline earth metal peroxide in combination with cable bacteria.

A wastewater management system includes a series of water treatment modules to treat wastewater and produce reusable and/or potable water and other beneficial byproducts of the wastewater treatment process. A pretreatment module, a filtration module, an evaporator module, an odor control module, a UV-light module, an autoclave module, a sonolysis module, an ozone module and a chlorination module are combined in multiple combinations along with holding tanks, condensers, flash tanks and other components to address water purification and reclamation needs based upon specific wastewater conditions. The system captures condensate from AC systems and rainwater from rainwater gutter systems processes the water to produce reusable and/or potable water with or without re-mineralization. Any CO.sub.2 produced by the water treatment system is captured and processed using naturally-occurring flora. The wastewater treatment system includes multiple closed-loop subsystems to minimize energy usage and maximize water purification and reclamation for reuse.

A method of rapid treatment of heavy metal sludge and preparation of ferrite magnets comprises following steps of: providing a sludge, the sludge at least having zinc metal and ferrous metal; adding an iron-containing substance to the sludge; pickling the sludge and the iron-containing substance with sulfuric acid to obtain a pickling solution with zinc ions and iron ions; neutralizing the pickling solution with sodium hydroxide to form hydroxide precipitates; and airing and heating the neutralized pickling solution by an ultrasonic-microwave method so that the hydroxide precipitates undergoing a ferrite magnet reaction, thereby obtaining ferrite magnets with a spathic structure.

Methods and systems are provided for processing PFAS-contaminated waste via thermomechanochemical (TMC) processing. In one example, a system may include a TMC processing chamber including a milling system and coupled to a heating system, the heating system configured to co-operate with the milling system to process the waste material. A plurality of containers including the waste material in one or more of a liquid-solid state, a semi-wet or slurry solid state, and a dry solid state are coupled to the TMC chamber.

This invention is a novel method to thermally process wet WWTP sludges, including biosolids, so that they can be classified. Wet biosolids or other WWTP sludges are passed through the heating zones of one or more solar thermal systems so that the sludges are heated to a target temperature to meet the requirements for U.S. Environmental Protection Agency classification. Various catalysts are provided before the sludges enter the heating zone and within the heating zone to optimize the treatment of the sludges.

The present invention relates to the use of particulate mineral material comprising modified heulandite group zeolite for removing heavy metal cations from a liquid medium, wherein at least a part of the exchangeable cations in the heulandite group zeolite is replaced by ammonium cations.

A process for rendering excavation material inert for the purpose of their analysis, of their storage and/or of their valorisation. The process for inerting the excavation material includes adding an organic acid, of a complexing agent or of a diaminotetracarboxylic acid to the excavation material, the complexing agent being chosen from a sugar alcohol, a cationic surface-active agent and their mixtures. Also, a method of determining the concentration by weight of a polluting inorganic element included in an excavated material, a method of storage of the inert excavation material, and a method of valorising the inerted material.

The disclosure relates to a treatment method for sludge utilization in a sewage treatment plant, in particular to a method for reducing heavy metal content of sludge-based biocoke. The disclosure includes following steps (1) to (5): step (1): concentrating a residual sludge produced by a municipal sewage treatment plant to be with a moisture content of 95-98%; step (2): conditioning the concentrated sludge in a sludge bioleaching tank for 48 hours, with a pH value of the sludge being reduced to below 4.5; step (3): pumping the conditioned sludge into a high-pressure diaphragm plate and frame for a press filter dewatering to obtain a dewatered cake with a moisture content less than or equal to 50%; step (4): delivering the dewatered cake into a sludge dryer for crushing, heating and drying to obtain the dried sludge with a moisture content of 15-22%; and step (5): carbonizing the dried sludge into sludge-based biocoke at a high temperature in a pyrolytic carbonization device with a carbonization temperature of 500-650° C.

A method for preparing agricultural products from a biological sludge containing microbial cells includes the steps of: subjecting the biological sludge to a pretreatment process which includes introducing ozone and supplying a hydraulic pressure to generate cavitation to destroy cell wall of the microbial cells; and subjecting the pretreated biological sludge to a solid-liquid separation treatment to obtain a solid fraction including cell debris and a liquid fraction including a cell lysate solution.

A process for separating heavy metals from a phosphoric starting material includes, in a step (i), heating the starting material to a temperature between 700 and 1,100° C. in a first reactor and withdrawing combustion gas. In a step (ii), the heated starting material at the temperature between 700 and 1,100° C. is transferred to a second reactor, chlorides of alkaline and alkaline earth metals are added and process gas is withdrawn.