A deep sludge dewatering method using electroosmosis with filter bags, including (1) placing a filter bag on a slope on which a cathode electrode is arranged; (2) injecting sludge into the filter bag, and after the filter bag is filled with the sludge, closing an inlet of the filter bag; and (3) laying an anode electrode on the filter bag filled with the sludge, and connecting the cathode electrode and the anode electrode to a DC power supply via an electric wire, and carrying out energization for electroosmosis so that water flows down the slope. The present invention can be used for recycling of the sludge produced in underground and tunnel excavation projects, and has the advantages of large processing capacity, simple process, good treatment effect and available resource recycling.

An electrode for use in bio-electrochemical systems is described, including: a substantially planar electrode material; a frame comprising a non-conductive substance; and one or more first conductive substances linked or secured to the frame. Bio-electrochemical systems, racks for inserting the electrode, and methods of using the racks are also described.

Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

Embodiments of the present disclosure provide a device for kitchen waste digestion, including: a first treatment container, provided with a feed pipe and an exhaust pipe at a top, and internally configured with a plurality of pole plate pairs, the pole plate pairs including two pole plates, one of the pole plates being connected to a positive pole of a power source and another being connected to a negative pole of the power source, and a plurality of sieve holes being provided in each of the pole plates; and a second treatment container, a top of the second treatment container connecting to a bottom of the first treatment container, a middle part being configured with a plurality of filler layers spaced apart in a vertical direction, and a bottom being configured with an iron-carbon filler; and a filler in the filler layers including calcium peroxide and magnetite particles.

This combined dehydration device continuously supplies primarily dehydrated sludge to a sludge supply part, the combined dehydration device including: a multiple rotary disk-type solid-liquid separation device and an electroosmosis dehydration device. In the multiple rotary disk-type solid-liquid separation device, a plurality of rotary shafts in which a plurality of rotary disks are fitted and mounted are arranged from the upstream side toward the downstream side and pivotally supported; while the rotary disks are rotated, water to be treated including sludge is supplied from over the rotary disks at the upstream side and is subjected to a primary dehydration treatment; and first dehydrated sludge on the rotary disks is fed and discharged from a sludge discharge part located at the most downstream portion of the rotary disks. In the electroosmosis dehydration device, a sludge supply part is provided at the upstream side of an endless filtration fabric spread between rollers.

Various examples are provided for electrokinetic dewatering of e.g., phosphatic clay suspensions. In one example, among others, a system includes a separation chamber including an anode and a cathode extending ends of the separation chamber and a power supply configured to energize the anode and the cathode to establish an electric field. An inlet at one end of the separation chamber can supply a dilute feed suspension and an outlet at another end of the separation chamber can remove supernatant water. The electric field can consolidate solids in the dilute feed suspension. Consolidated solids may be removed by a removal mechanism. In another example, a method includes supplying a dilute feed suspension including suspended solids, establishing an electric field to consolidate solids, and removing supernatant water.

A method for separating elemental phosphorus from iron oxide-containing and phosphate-containing materials includes at least the following steps: providing at least one iron oxide-containing and phosphate-containing material, adding at least one aluminum carrier to the at least one iron oxide-containing and phosphate-containing material and melting the at least one aluminum carrier together with the at least one iron oxide-containing and phosphate-containing material to form an aluminum-containing and optionally aluminum oxide-containing phosphate slag melt, reacting the aluminum-containing and optionally aluminum oxide-containing phosphate slag melt to elemental, gaseous phosphorus, iron and Al.sub.2O.sub.3-containing slag in a melting vessel, withdrawing the elemental, gaseous phosphorus and tapping off the iron and the Al.sub.2O.sub.3-containing slag.

Process for capturing and cleaning up pollutants by the formation of cement or concrete by electrolysis, the creation of a rocky conglomerate, assembly of sediments linked together by a calcium-magnesium deposit acting as binder. This process is thus applicable to the decontamination of ports, by enabling the capture of pollutants and by containing them in a sediment matrix.

A device for sludge treatment comprises a supporting frame of an external casing defining a treatment chamber provided with one inlet opening of the sludge to be treated; one discharge opening of the treated sludge; at least one auger element housed within the treatment chamber, and adapted to move the sludge to be treated along a direction of advancement; and filtration means located internally to the treatment chamber and surrounding the auger element; at least one anodic element associated with the auger element, and application means for applying a potential difference between the anodic element and the filtration means, generating an electric field adapted to interact with the sludge to be treated to produce an electro-osmotic process.

A filtration device includes a first electrode provided with a plurality of first openings. a second electrode provided with a plurality of second openings and provided to face one surface of the first electrode, a filter medium provided with a plurality of apertures and provided between the first electrode and the second electrode, a filter chamber provided in contact with the other surface of the first electrode and supplied with a material to be treated containing particles to be separated and a liquid, and a third electrode facing the first electrode across the filter chamber.