The present disclosure relates to a sewage/wastewater treatment system using granular activated sludge and a membrane bio-reactor and a sewage/wastewater treatment method using the same that are configured to effectively remove pollutants contained in raw water through a granulation tank in which the granular activated sludge is contained and to allow the raw water to be filtered through movable membranes located on the upper portion of the granulation tank. The system includes: an indirect aeration tank adapted to supply air thereto to allow dissolved oxygen contained in raw water to reach a saturation concentration; a granulation tank adapted to allow floating microorganisms contained in the treated water passing through the indirect aeration tank to be granulated and having a sludge blanket formed thereon; and movable membranes located on the upper portion of the granulation tank in such a manner as to be movable in the granulation tank.

A wastewater treatment system including a contact tank, a dissolved air flotation unit, a fermentation unit, and a biological treatment unit is disclosed. A method of retrofitting a wastewater treatment system by arranging the wastewater treatment system such that floated biosolids are fermented in an anerobic environment and fluidly connecting the biological treatment unit to receive at least a portion of the fermented solids is also disclosed. The method optionally includes providing a fermentation unit and fluidly connecting the fermentation unit to a biological treatment unit. A method of treating wastewater including combining the wastewater with activated sludge, floating biosolids from the activated wastewater, fermenting the floated biosolids, and biologically treating the effluent with the fermented solids is also disclosed. A method of facilitating delivery of soluble organic carbon to a biological treatment unit is also disclosed.

The invention relates to a bioreactor having a tank with at least one bioreactor compartment containing a carrier medium, on the surface of which a biofilm may grow; wherein the first longitudinal end of the compartment comprises an inlet, and the second longitudinal end of the compartment comprises an outlet. The bioreactor comprises an aeration device for supplying reaction gas required for the purification process, and for agitating the carrier medium and the water to be purified into a rotary motion inside the compartment. A perforated pipe is arranged within the bioreactor compartment at a distance from the inner walls of the compartment. Inside the perforated pipe is a closing. Guide plates are arranged outside the perforated pipe, which guide water to be purified into the bioreactor space outside the perforated pipe.

A system and method for preparing a microbial supplement, and applying the supplement to plants, trees and other items to promote their growth. The supplement comprises seawater, including microbes that naturally exist in seawater. Seawater is harvested containing microbes in an inactive or dormant state. The seawater undergoes a filtration, mineralization and oxygenation process to reduce sodium chloride levels, to increase the levels of desirable minerals in the seawater and to oxygenate the seawater to keep the microbes alive, though in a dormant or inactive state. The microbes are maintained in an inactive or dormant state through the preparation process, but become active when the supplement is applied to plants or trees, thereby promoting agricultural growth.

Disclosed are apparatus and methods for treating wastewater. In one example a system for treating wastewater treatment is provided. The system comprises a biological reactor having an inlet in fluid communication with a source of wastewater and an outlet, the biological reactor configured to treat wastewater from the source of wastewater and output a biologically treated wastewater from the outlet, a solids-liquid separation system having an inlet in fluid communication with the outlet of the biological reactor and configured to separate the biologically treated wastewater into a solids-lean effluent and a solids-rich waste activated sludge (WAS), a treatment subsystem comprising a digester, an inlet in fluid communication with a WAS outlet of the solids-liquid separation system, and an outlet for providing ballasted and digested WAS, and a ballast feed system configured to deliver ballast to one of the biological reactor and the treatment subsystem.

A urban waste water treatment plant, comprising: a tank subdivided in at least two distinct portions, said at least two distinct portions comprising at least an accumulation area of the sludge and at least an accumulation area of the liquid phase; at least a feeding pipe of the waste water to be treated; at least a recirculation pipe of the liquid phase; at least a discharge pipe of the effluent treated, withdrawn from at least one area of the liquid phase, characterized in that said feeding pipe of the waste water to be treated is configured so that the waste water is inlet on the bottom of said at least one sludge area and in discontinuous mode; inside said at least one sludge area it is provided porous material, contained between two containment planes, configured to allow the filtration of the waste water with removal of the suspended material.

The present invention relates to a method for carrying out biological purification of wastewater with the aid of activated sludge in a sewage treatment plant, the sewage treatment plant comprising: an activated sludge tank that can be ventilated (B tank), at least two sedimentation and recirculation tanks (SU tanks), and a tank for biological phosphor elimination (P tank), wherein the P tank is hydraulically connected with the B tank via one or more openings, wherein the B tank is divided into two tanks B.sub.1 and B.sub.2 (B.sub.1 tank and B.sub.2 tank) which are hydraulically connectable via the P tank, wherein each of the B.sub.1 tank and the B.sub.2 tank is continuously connected hydraulically to at least one SU tank, wherein the P tank comprises closure means to cut off the hydraulic connection between the P tank and the B.sub.1 tank and/or the B.sub.2 tank, and wherein each of the SU tanks comprises an overflow unit for draining the excess water in the sewage treatment plant, wherein in the event of an emergency, the hydraulic connection between the P tank and either the B.sub.1 tank or the B.sub.2 tank is cut off, and the waste water is then accumulated and lifted up in the tanks that are not cut off, and the treated wastewater can effluent via the overflow unit of the respective SU tank(s). The present invention also relates to a sewage treatment plant for carrying out said method.

An apparatus and a method for removing nitrogen and phosphorus from sewage by using sponge iron and activated sludge are disclosed herein. The apparatus comprises a raw tank, a pH adjusting tank, a primary SBR reactor, a secondary SBR reactor, an intermediate tank, and a discharge tank; by modification of sponge iron, preparation of composite filler, sludge inoculation and domestication, and sewage treatment, an effect of simultaneous denitrification and dephosphorization is achieved in one reactor using the combined action of sponge iron and activated sludge with high nitrogen and phosphorus removal efficiency.

A system to treat effluent in a septic tank includes filter sections having kerfs. A strainer removes solid debris from the filter for removal without allowing the solid debris to pass. An aerator includes an eight to twelve inch diameter pipe 4 to 6 feet tall matching tank invert height. The aerator has bottom inlet holes, each with an elbow on the outside with a vertical standpipe taking effluent from the clear zone, sending it through the aerator. Air inlet piping is attached to a T shaped air diffuser producing bubbles traveling upward through plastic media. Aerator height is field adjusted to approximately 2 inches below static water level. Holes in the upper sidewalls just below the top let air bubbles out sideways. At its top, the aerator has a slotted, sliding, anti-turbulation collar adjusted to be one to two inches above the static water level.

Increased control and efficiency over the wastewater purification can be achieved through creating conditions that allow to selectively prioritize the digestive function of microorganism in the activated sludge. The gas-dispersion return sludge is created using pure oxygen or oxygen containing trace amounts of ozone as a reactive gas, which is blended with return sludge to create a mixture of gas and liquid, which is passed through an atomizer or a cavitation pump to instantly render the reactive gas in the mixture to an ultra-fine bubble state. At least a portion of the ultra-fine bubbles dissolve within the gas-dispersion return sludge, activating the dormant microorganisms. Due to a complete or an almost complete absence of digestable organic material in the gas-dispersion return sludge, the microorganism prioritize their digestive function, and when exposed to organic pollutants present in wastewater, digest the pollutants into water and carbon dioxide at an increased rate.