A management method for a water treatment device that serves as a management method for water treatment equipment provided with a plurality of water treatment devices on each of which a plurality of water treatment members is mounted includes performing life expectancy estimation processing to estimate a life expectancy of each water treatment member based on history information of each water treatment member, the history information being updatable as needed, and performing external life expectancy homogenization processing to replace corresponding water treatment members with each other among a plurality of water treatment devices at a predetermined period so that other water treatment members each having a life expectancy within a predetermined range with respect to the life expectancy of each water treatment member estimated in the life expectancy estimation processing are mounted in an identical water treatment device.

A management method for a water treatment device that serves as a management method for water treatment equipment provided with a plurality of water treatment devices on each of which a plurality of water treatment members is mounted includes performing life expectancy estimation processing to estimate a life expectancy of each water treatment member based on history information of each water treatment member, the history information being updatable as needed, and performing external life expectancy homogenization processing to replace corresponding water treatment members with each other among a plurality of water treatment devices at a predetermined period so that other water treatment members each having a life expectancy within a predetermined range with respect to the life expectancy of each water treatment member estimated in the life expectancy estimation processing are mounted in an identical water treatment device.

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.

An example method for drying wastewater solids can include blending an anaerobically digested and de-watered biosolid cake with a previously biodried biosolid to form a mixed biomaterial pile and shaping the mixed biomaterial pile to form a static pile. The method also includes aerating the static pile by forced air ventilation throughout the mixed biomaterial pile to form a biodried material and dividing the biodried material into a recycle biosolid and a dried biomaterial product that is then suitable for disposal or use in agriculture or horticulture applications.

A subsurface sewage is provided and includes a plurality of leaching members oriented substantially vertically. A first volume defined within each of the plurality of the leaching members forms a void therein and includes a periphery, a top face that defines a first substantially horizontal plane, and a bottom face that defines a second substantially horizontal plane. A permeable enclosure is wrapped substantially around the periphery of each leaching member and a system frame maintains a location and a position of the plurality of the leaching members. A filter media is disposed in a second volume defined between at least two of the plurality of the leaching members. A leaching member balancing pipe is configured to hydraulically connect at least one of the plurality of the leaching members to at least one other of the plurality of the leaching members. A distribution pipe is configured to hydraulically connect at least one of the plurality of the leaching members to a source of an effluent flow.

A treatment process for municipal, commercial, industrial, and institutional fluids containing one or more substances at a first concentration includes a contactor, an aerator, and a separator. The fluid is mixed with a powdered natural lignocellulosic material (“PNLM”), a microbial growth inoculum, and at least a portion of the fluid in the contactor to provide a mixture that includes an established, acclimated microbial growth in the fluid. The mixture is introduced to an aerator where physical binding and chemical bonding of at least some of the one or more substances to the PNLM additionally physiological uptake by microbial growth in a biosludge reduces the concentration of at least some of the one or more substances in the fluid discharged from the aerator to a second concentration. The biosludge is separated to recover at least a portion of the PNLM that is recycled to the contactor.

A water treatment system that removes calcium and magnesium using coagulants and pH controls, aqueous phase organic materials from water using a biological removal system that includes microorganisms and a physical separation system that includes sparging equipment for sparging the water to remove non-aqueous phase liquid organic materials, volatile phase organic materials. An apparatus, system and method for pretreating oilfield produced water to completely remove or significantly reduce concentrations of substances that are known to interfere with downstream recovery of metals including lithium. This technology facilitates a more efficient and cost-effective extraction method from alternate sources to meet the increasing global demand.

A device and method for shortcut nitrogen removal and nitrite-oxidizing bacteria activity inhibition are disclosed herein. An embodiment of the present invention provides a hollow fiber diffuser comprising: a plurality of hollow fibers on which bacteria can be attached and grow; and an inlet capable of supplying gas to one sides of the plurality of hollow fibers, wherein the gas includes oxygen and carbon dioxide, nitrite can be produced by the oxygen, and the concentration of oxygen in the gas is adjusted by the oxygen and the carbon dioxide.

A device and method for shortcut nitrogen removal and nitrite-oxidizing bacteria activity inhibition are disclosed herein. An embodiment of the present invention provides a hollow fiber diffuser comprising: a plurality of hollow fibers on which bacteria can be attached and grow; and an inlet capable of supplying gas to one sides of the plurality of hollow fibers, wherein the gas includes oxygen and carbon dioxide, nitrite can be produced by the oxygen, and the concentration of oxygen in the gas is adjusted by the oxygen and the carbon dioxide.

A method for treating wastewater and an activator for treating wastewater that maximizes the utilization of microorganisms such as Bacillus bacteria in an activated sludge treatment of wastewater while minimizing treatment cost. In the method for treating wastewater, wastewater including organic matter is introduced into a treatment tank and the wastewater is subjected to an activated sludge treatment by microorganisms in the treatment tank, wherein an activator containing a component for activating the microorganisms is added to the wastewater to be subjected to the activated sludge treatment in the treatment tank; and at least 50% (by quantity) of the entirety of the activator has a particle size of less than 10 pm. Also provided is an activator therefor. The microorganisms preferably include Bacillus bacteria.