A system may include a reactor, in which an anaerobic environment exists, that includes a slurry of at least contaminated water and a mixed bacterial culture of facultative bacteria and anaerobic bacteria. The mixed bacterial culture may be suspended within the slurry. The contaminated water may include contaminants associated with a non-metal, a metal, or a metalloid. The mixed bacterial culture may react with the contaminated water to reduce or remove the contaminants from the contaminated water to create a treated slurry. The reactor may output the treated slurry. The system may also include a filtration device to receive the treated slurry; remove, from the treated slurry, the mixed bacterial culture and the contaminants, reduced or removed from the contaminated water, to create treated water; and output the treated water. The system may also include an aeration device to add dissolved oxygen to the treated water, and output the treated water. The system may also include a reaction device where iron or aluminum salts are added to remove phosphorous, selenite, arsenate, or other contaminants which adsorb onto iron or aluminum oxyhydroxide solids. The system may also include a filtration device to remove the solids from the water, and output the treated water.

In a method of anaerobic treatment of an organic waste stream (1), a stream originating from an anaerobic reactor (5) is fed to a first separating unit (33) to be separated into a sludge fraction (7) containing between 50% and 80% of the solids by weight and a second fraction (7). The second fraction (7) is fed from the first separating unit (33) into a Dissolved Gas Floatation (DGF) unit (16). The sludge fractions (7) and (9) from the separator units (33) and (16) are fed back to an inlet 41 of the reactor 5.

The invention concerns a wastewater treatment plant and a method for it. The plant comprising at least one main reactor module (30) having a plurality of stackable filter-modules (50), each filter-module purifying wastewater independently by being individually charged batchwise with wastewater. The wastewater is discharged on each filter-module by means of a deflector (44) referenced to a filter-module (50), the deflector creating a back pressure in dependency of the gravity-flow-force of the wastewater leading to that the wastewater is spilled from the deflector (44) in an angle of discharge relative to a horizontal plane evenly onto every independent filter-module, respectively.

In one embodiment, a method includes receiving wastewater having a first total organic carbon (TOC) at a wastewater treatment system comprising a reactor system, wherein the reactor system comprises an anaerobic moving bed biofilm reactor (MBBR) and an aerobic MBBR. The method further includes treating the wastewater in the anaerobic MBBR, wherein the anaerobic MBBR comprises first bio-carriers configured to degrade at least a portion of the first TOC in the wastewater to generate a first treated wastewater and biogas, wherein the first treated wastewater has a second TOC that is less than the first TOC. The method also includes providing the biogas to an external system.

An industrial waste water treatment system is provided. The industrial waste water treatment system includes: a buffer tank that temporarily receives and stores industrial estate waste water; a primary treatment unit that performs a primary treatment on effluent water from a buffer tank; an activated sludge treatment apparatus that is a secondary treatment unit that performs a secondary treatment using activated sludge on influent water that has been treated by the primary treatment unit; an organic matter concentration measurement unit that measures an organic matter concentration in the industrial estate waste water flowing into the buffer tank; and an activator dispensing unit that dispenses, into the secondary treatment unit, an activator that activates microorganisms included in the activated sludge of the activated sludge treatment apparatus.

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.

A wastewater treatment apparatus performs both initial rainwater overflow treatment and primary treatment. A wastewater treatment method according to the apparatus, the apparatus modifying an existing primary depositing reservoir to an up-flow high-speed filtration facility, the apparatus using a floating filter and biological filter paper applied to an existing depositing reservoir to perform an initial rainwater treatment. The apparatus can be applied to an existing wastewater treatment facility to eliminate the necessity of installing an additional facility for an initial rainwater treatment facility. The apparatus is further capable of adjusting the flow rate into a biological treatment facility to achieve a target water quality. The apparatus comprises: an up-flow high-speed filtration facility for filtering floating matter contained in wastewater using a floating filter; a sludge holding tank; a biological treatment facility for removing dissolved organic matter contained in the water discharged from the up-flow high-speed filtration facility; and a concentrator.

In some embodiments, a wastewater treatment system may reduce contaminants in water. A system may include one or more bioreactors which include a substrate that supports a biofilm. The bacteria used to form the biofilm may be selected to maximize the reduction of contaminants in water. Various components of the wastewater treatment system may be optimized to improve the efficiency and energy consumption of the wastewater system.

A system for harvesting rainwater for use in a skirt building. The skirt building includes a main building and a podium supporting the main building. The system includes: a standpipe; a buffer channel; a filter channel; and a green roof. The green roof includes a vegetation region including a baffled diversion corridor, and a bottom filtering layer including a drainage pipe. The standpipe is arranged on the main building and is connected to the buffer channel where the energy of rainwater flowing out of the standpipe is dissipated. The buffer channel, the filter channel, and the green roof are arranged on the podium, and the buffer channel communicates with the filter channel. The filter channel is connected to the green roof. The filter channel is divided into a plurality of sections respectively filled with different matrix materials.

In one embodiment, a portable wastewater treatment system includes an anaerobic reactor in which organic material within the wastewater can be broken down, a membrane filter that receives wastewater from the anaerobic reactor and filters the water to produce permeate, and a small shipping container in which the reactor and the membrane filter are contained.