Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.

An iron containing bioreactor for treating explosive compounds and other organics in contaminated surface water is disclosed. The bioreactor can be located either on-ground or in-ground at a location across which contaminated surface water flows. In one configuration the reactor is made up of (i) indigenous microbes, (ii) acetate, (iii) a low density iron-containing bed, and contains anaerobic zones in at least one portion of the flowpath. The reactor reduces the concentration of explosive compounds to below 10 ppb and also maintains this explosive compound reduction level for a period of at least one year without replenishing the microbes or iron.

The present disclosure relates to the technical field of microbial electrochemical technology, in particular to a graphene-magnetite conductive skeleton electrode, a preparation method and application thereof, and a method for treating petrochemical wastewater. In the present disclosure, the surface roughness of the graphite rod electrode can be increased by the conductive skeleton modified on the surface of the graphite rod electrode, which is beneficial to the enrichment of microorganisms. The increase in the load of microorganisms will mean the amount of electroactive microorganisms will also increase, which will further improve the electron transfer ability, and because the material of the modified layer is a conductive material, it is also more conducive to the transfer of electrons; at the same time, the conductive skeleton modified on the surface of graphite rod electrode can also further enhance the transmission distance of electrons because of the skeleton constructed.

The present invention relates to one step BioFerric flocculant enhanced primary treatment (BEPT) process for domestic sewage treatment. More particularly, it relates to a novel composite flocculant consisting of acidophilic bacteria, and bacteriogenic flocculants for sewage flocculation and settling that enhanced the sewage treatment process by minimizing the chemical uses and steps and direct dewatering of sludge without preconditioning.

The invention relates to a method and apparatus for treating water. Iron is removed biologically from humus-rich water with the solution according to the invention. In the method, the water being treated is conveyed through a filter, which filter comprises filter material. Before the water is conveyed to the filter, the pH value of the water is lowered with an acidification part that is included in the apparatus.

Disclosed herein are methods, systems, and devices for generating electricity from an effluent source. In the presence of electrogenic bacteria and substrate electrodes, an electroactive biofilm is produced which possesses bioconductive capacity for efficiently producing an electric current while treating an effluent source such as, e.g., wastewater. This disclosure relates generally to the production of electricity from a biological source. In particular, this disclosure relates to microbial fuel cells (MFCs) and other bioelectrochemical systems (BES) that exploit an exogenous fuel source.

Systems and methods for actively treating mining wastewater, such as acid mine drainage, using a mixed culture of iron oxidizing bacteria, in a manner that results in both remediation of the water and the production of a useful end product. Exemplary systems and methods employ a reaction vessel where the bacteria can oxidize the iron in the mining wastewater for some amount of time, and a settling tank into which reacted water may be transferred and retained to permit iron oxyhydroxide contained in the water to settle as iron oxyhydroxide sludge. The iron oxyhydroxide sludge may be dried to produce iron oxyhydroxide solids that can be employed in the manufacture of a usable pigment.

The present invention provides an ecological method for denitrification and phosphorus removal in wastewater treatment process, which relates to the field of sewage treatment technology, The present invention provides a nitrogen and phosphorus removal system, comprising a nitrogen and phosphorus removal unit and a sulfate adsorption unit. The nitrogen and phosphorus removal unit is packed with coarse sand layer, deoxidizing layer and sulfur/iron mixture layer, while the sulfate adsorption unit is filled with modified hydrotalcite. Both of the units are filled with solid material, which effectively avoid the contamination that causes by liquid carbon source feeding. The application of the present invention can realize a completely denitrification, which achieve a maximum removal rate of 100%, a phosphorus removal efficiency of about 80%. The TP concentration is below 0.5 mg/L in the treated effluent, while the average sulfate removal rate is about 50%.

Provided are Ybt analogs and derivatives thereof and compositions comprising Ybt and Ybt analogs and derivatives thereof. Methods of making Ybt and Ybt analogs and methods of using Ybt and Ybt analogs are also provided. The methods use microbes modified to produce Ybt and Ybt analogs. The compounds and compositions can be used to remove metals from metal containing samples.

Processes and compositions for removal nitrogen, organic and inorganic contaminants from wastewater using Feammox bacterium are provided.