Provided are a household toilet waste treatment system and a method of treating toilet waste using the same, the household toilet waste treatment system comprising a solid-liquid separation toilet, a biological treatment apparatus, a sterilization apparatus, and a combustion apparatus. The combustion apparatus complements a slow biological treatment apparatus to allow continuous treatment of the household toilet waste in a unit space without long-distance piping connections.

There is disclosed a system and process for the anaerobic and aerobic treatment of landfill wastewater, including landfill condensate, landfill leachate and mixtures thereof.

A gas-liquid-solid separator can include a separator body having a vertical outer wall and a gas collector having a vertical gas collector wall surrounded by the outer wall, with a gas inlet opening at a bottom of the gas collector. An annular volume between the gas collector wall and the outer wall can contain a plurality of inclined flow channels. The flow channels can have a channel inlet opening at the bottom and can slope upward following a helical path between the gas collector wall and the outer wall. A gas-liquid-solid mixture inlet opening can be in a floor of the separator body. The mixture opening can be positioned below the gas inlet opening and the mixture inlet opening can have a top-down profile that fits within a top-down profile of the gas inlet opening.

The Biopowerplant is a system that integrates the generation of carbon-neutral energy through the cultivation and conversion of microalgal biomass, with sewage sanitation and environmental carbon recovery, with the additional and secondary production of biofertilizer, biofuel, water for reuse. This system integrates a suboptimal anaerobic digestion subsystem focused on the generation of biogas, the processing of the resulting digestate through a microalgal consortium culture subsystem with biofilm induction and smooth decreasing gradient of light radiation, and the transformation of the generated microalgal biomass into syngas through a subsystem of evaporation, torrefaction, pyrolysis, gasification, and combustion in separate chambers. The syngas and methane from the biogas are subsequently used as fuel in an electric power generator capable of operating with mixed gases. The biogas generation process is enriched through the recirculation of the microalgal biomass supernatant, the residual heat from the syngas generation subsystem, and the heat transferred from the combustion gases of the electric generator. The residual sludge from the biogas generation subsystem is recirculated towards a longitudinal biopile subsystem, where it acts as an anaerobic medium compared to the aerobic medium that constitutes the concentrated microalgal biomass, and both streams are mixed to be transformed into the syngas generation subsystem. Input inflows for system operation are mainly sewage, and optionally seawater and/or leachate. The inflows must be bioaugmented with a microalgal consortium dosed automatically by a Compact in situ bioaugmentation system, preferably more than 3 kilometers before the inflow enters the system.

A wastewater spray distribution apparatus is operative to distribute wastewater produced by a sewage treatment system (10) onto a ground level (22) through operation of sprayers (118, 260). The exemplary sprayers include a manifold (142, 262) that includes outlet nozzles (158, 264) that can be readily removed and replaced. The exemplary manifold further includes interior areas bounded by surfaces that slope continuously downward from the outlet nozzles to the manifold inlet to assure the draining of water therefrom. Each of the nozzles include a base (140) which includes brake (207). A brake is provided in each nozzle and is adjustable to provide brake force to limit rotational movement produced by the thrust of water passing from the outlet nozzles to assure that the sprayer operates at the appropriate rotational speed. Alternative arrangements include manifolds including fixed or adjustable flaps and radially outwardly adjustable arms to adjust rotational properties.

Disclosed are a device for strengthening anaerobic sludge digestion based on conical-coiled pipe coupling and an anaerobic sludge digestion method. The device comprises a feeder (A-3, B-3), a conical-coiled pipe coupling reactor (A-1, B-1) and a thermostat (A-4, B-4), wherein the bottom of the feeder (A-3, B-3) communicates with the top of the conical-coiled pipe coupling reactor (A-1, B-1), and the bottom of the feeder (A-3, B-3) is flush with the top of the thermostat (A-4, B-4); the conical-coiled pipe coupling reactor (A-1, B-1) is arranged in the thermostat (A-4, B-4); the whole coupling reactor (A-1, B-1) is in a regular cone shape or an inverted cone shape; and a main body of the coupling reactor (A-1, B-1) is a coiled pipe (A-2, B-2).

A system and method using a subterranean biological reactor can include a pre-reactor storage unit configured to receive a feedstock including a slurry of biologically derived material and at least one pump configured to pump the effluent from the pre-reactor storage unit. The system may include at least one wellbore containing a subterranean biological reactor configured to receive the effluent from the pre-reactor storage unit. At least a portion of the subterranean biological reactor may be configured to perform anaerobic digestion upon the effluent to generate a biogas.

A method for treating wastewater comprising subjecting a sulfate containing wastewater to Fe(III) iron dosing in an anaerobic bioreactor containing one or more of an iron reducing bacteria and one or more of a sulfate reducing bacteria, and one or more of a fermentative bacteria, and adjusting a dosage of the Fe(III) iron in the anaerobic bioreactor to achieve a Fe/Sulfate molar ratio that is equal to or greater than 0.50, and removing an effluent from the anaerobic bioreactor that is a treated wastewater. A wastewater treatment system is provided having a wastewater reservoir, a ferric iron solution reservoir, an anaerobic bioreactor, and an effluent reservoir.

A wastewater treatment method applicable to new or existing enhanced biological phosphorus removal (EBPR) treatment process designs which utilize the sequencing batch reactor (SBR) process activated sludge process treatment tanks. The method improves the performance and efficiency in the treatment of municipal and industrial wastewater to remove phosphorus (P) and nitrogen (N). The method includes ceasing reaction cycles when a derivative of rate of change of the input flow volume of the air stream into the tank needed to maintain a low-range of dissolved oxygen (DO), in which an oxidation reduction potential (ORP) setpoint reaches a derivative value indicating that conversion of the ammonia nitrogen in the influent wastewater content to a nitrite or to a nitrate is complete.

An organic waste digestion and decomposition system includes a digestion chamber, a drain tank, and a discharge tank. The digestion chamber is configured to digest an organic waste mixture disposed therein to produce a liquid digestate. The digestion chamber includes a recirculation spray head configured to spray a first portion of the liquid digestate into the digestion chamber and a drain pan configured to enable the liquid digestate to exit the digestion chamber. The drain tank is configured to receive the liquid digestate from the digestion chamber and includes a first pump configured to pump a second portion of the liquid digestate from the drain tank back to the digestion chamber. The discharge tank is in fluid communication with the drain tank and is configured to receive the liquid digestate from the drain tank and enable the liquid digestate to be discharged from the organic waste digestion and decomposition system.