The present disclosure relates to an integrated wastewater treatment apparatus and method, the apparatus comprises a first reactor module, a second reactor module, a sedimentation module and a gas-liquid separation module, the first reactor module comprises a first reactor and an anoxic reaction zone, an aerobic reaction zone, a first gas-gathering pressurized layer, a first water inlet pipe and an aeration device; the second reactor module comprises a second reactor, a second water inlet pipe, an anaerobic reaction zone and a second gas-gathering pressurized layer; the sedimentation module comprises a third reactor and a water outlet pipe; the gas-liquid separation module comprises a gas-liquid separator, an exhaust pipe, a first riser pipe, a second riser pipe and a return pipe. The apparatus can give full play to the advantages of the autotrophic biological denitrification process, meet the biochemical treatment requirements of wastewater with low C/N ratio.

The present invention relates to a method for reducing the content of at least one pollutant selected from the group consisting of nitrobenzene, formate, phenol, 4,4′-Methylenedianilinc (MDA) and aniline of hypersaline wastewater, said method comprising the steps of (a) providing a composition A comprising hypersaline wastewater and said at least one pollutant, and (b) contacting composition A with Haloferax mediterranei cells, thereby generating a composition B comprising said composition A and cells of said at least one halophilic microbial strain. The present invention further concerns a method for the production of chlorine and sodium hydroxide. Further encompassed by the present invention is a composition comprising hypersaline wastewater, said at least one pollutant, and Haloferax mediterranei cells.

A processes for solubilization or hydrolysis of a municipal solid waste with an Enzyme composition, comprising: (i) a cellulolytic enzyme composition, and (ii) a protease selected from the group consisting of: (a) a protease having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or 100% identity to amino acids 1 to 177 of SEQ ID NO: 1 or a fragment thereof having protease activity; (b) a protease having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or 100% identity to SEQ ID NO: 5; (c) a protease having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or 100% identity to SEQ ID NO: 32 or a variant thereof; (d) a protease having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or 100% identity to SEQ ID NO: 33; and (e) a protease having at least 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95% or 100% identity to amino acids 199 to 564 of SEQ ID NO: 36.

The present invention relates to systems and methods for removing and recovering precious metals, such as platinum-group metals (PGMs), including palladium, from wastewater and waste streams. The invention also relates to systems and methods for recycling the recovered precious metals for catalytic applications.

An object of the present invention is to provide a method for producing PHA, which is capable of suppressing the cost of overall production equipment including a waste water treatment process in production of PHA using microorganisms. Provided is a method including: a production step of purifying or molding polyhydroxyalkanoic acid biosynthesized in bacterial cells of a microorganism; a discharge step of discharging waste water containing nitrogen-containing impurities from the production step; and a nitrogen removal step of biologically treating the waste water to remove the nitrogen-containing impurities from the waste water. In the method, the residual ratio of the polyhydroxyalkanoic acid in the production step is 99% by weight or less, and the waste water that is biologically treated in the nitrogen removal step contains the polyhydroxyalkanoic acid in addition to the nitrogen-containing impurities.

The present invention discloses Stenotrophomonas maltophilia GYH and its application in degrading chlorinated hydrocarbon pollutants, and the application is carried out as follows: resting cells obtained by spreading cultivation of Stenotrophomonas maltophilia GYH are added to a pH=5-8 inorganic salt medium, and then a chlorinated hydrocarbon pollutant is added, and the cells are cultured at 20-35° C. and 140-180 rpm to degrade the pollutant. The concentration of chlorinated hydrocarbon pollutant which can be removed by Stenotrophomonas maltophilia GYH ranges from 2.9 mg/L to 8.93 mg/L. Therefore, the Stenotrophomonas maltophilia has a highly efficient degradation ability for similar industrial pollutants and is able to withstand high concentrations of these pollutants.

A method and an apparatus for maintaining a stable microbial community in a combined anaerobic-aerobic waste processing system. The system comprises cycling of waste activated sludge between reactors, thereby ensuring a healthy microbial community and an efficient waste decomposition.

A method of treating or remediating contaminated material, such as water or soil, comprises contacting such material with asphaltenes. The asphaltenes are preferably produced as a by-product of petroleum refining and, in particular, a by-product of vacuum residua. An adsorbent material comprising such asphaltenes is also provided.

Culture systems and methods of using same. The systems include a housing defining an inner space. The inner space includes a headspace and at least a portion of a reservoir. A surface for immobilizing cells is moveable between the headspace and the reservoir. The systems can be used for coculturing methanotrophs and phototrophs for processing biogas and wastewater, particularly from anaerobic digesters.

The present invention discloses a novel microbial process for decontaminating (per)chlorate and/or nitrate containing matrices. A heterotrophic mixed microbial culture expressing the functional genes responsible for (per) chlorate and nitrate reduction is the major component of the process. The present process can be a better substitute for existing processes for decontaminating perchlorate contaminated propellant wastewater, ion exchange resin/regenerate solutions, etc. The consortium consists or comprises of Halomonas sp. NIIST-PRB-02 (MTCC No. 5911), Bacillus sp. NIIST-PRB-03 (MTCC No. 5912) and Serratia marcescens strain NIIST5 (MTCC No. 5821).