A method for efficiently producing PHA comprising: inoculating PHA fermentation strains into a fermentation medium for fermentation under the condition of being capable of producing PHA through fermentation; subjecting the fermentation broth to a solid-liquid separation to obtain fermentation supernatant and thallus precipitate; breaking the cell walls of the thallus precipitate, and subjecting the wall-broken products to a plate and frame filtration to prepare PHA; pre-coating a filter cloth for the plate and frame filtration with a PHA layer; at least part of the water of the fermentation medium is PHA process wastewater. The method utilizes the PHA process wastewater as at least part of the water of the fermentation medium, and filters and separates the broken thallus with the plate and frame filtration equipment pre-coated with PHA layer to prepare PHA, thereby recycling the high-salt wastewater, reducing costs, and potentially separating PHA on a large scale for industrial production.

Described herein are biological devices and methods for using the same to produce carbo sugars. The biological devices include microbial cells transformed with a DNA construct containing genes for producing a cellulose synthase and galactomannan galactosyltransferase. In some instances, the biological devices also include a gene for lipase. Methods for altering the viscosity of petroleum oil using the carbo sugars are also described herein. Finally, methods for degreasing or decontaminating water mixed with petroleum oil or other fatty substances or a surface coated with petroleum oil or other fatty substances using the carbo sugars are described herein.

The present application discloses a class of aerobic efficient-phosphorus-removal bacteria that enable to biologically self-assemble and synthesize nanoparticles while wastewater treatment, including Shewanella sp. CF8-6, Psychrobacter aquimaris X3-1403, and Erythrobacter citreus X3-1411. The strains in the present application have a high adaptability, which may grow, remove nutrients including phosphorus and synthesize nanoparticles within a broad range of pH values, salinity, temperatures, and nutrition concentrations of wastewater. Particularly, the outstanding performance of phosphorous removal at high-salinity has a high significance in wastewater treatment from seawater utilization such as seawater toilet-flushing to solve the fresh water resource deficiency. Self-flocculation and self-assembly are the important properties of the strains to form biofilms and synthesize calcium phosphate nanoparticles at low-concentrations, while decomposing contaminants in the wastewater. The application provides an environmental-friendly nanoparticle synthesis method with low-cost and without chemical additives, which realizes the efficient treatment of wastewater and high value phosphorous resources recovery.

Provided herein are methods of organic waste stream conversion including fermenting an organic waste stream with an inoculum using arrested methanogenesis to generate an organic product. The inoculum includes an anaerobic consortium isolated from cheese, yogurt, saline soil, kefir, and/or probiotics and the anaerobic consortium is pretreated to transform the anaerobic consortium into an acidogenic consortium

An anammox reactor capable of improving nitrogen removal efficiency by maintaining activity of microorganisms, and a water treatment method using the anammox reactor are provided. The anammox reactor includes a raw water feed pipe through which raw water is supplied, a raw water discharge pipe through which raw water is discharged to an outside, and a first chamber configured to accommodate ammonium oxidizing bacteria (AOB) and anammox bacteria for performing an anammox process, wherein the raw water feed pipe and the raw water discharge pipe are configured to communicate with the first chamber.

A water treatment system that removes calcium and magnesium using coagulants and pH controls, aqueous phase organic materials from water using a biological removal system that includes microorganisms and a physical separation system that includes sparging equipment for sparging the water to remove non-aqueous phase liquid organic materials, volatile phase organic materials. An apparatus, system and method for pretreating oilfield produced water to completely remove or significantly reduce concentrations of substances that are known to interfere with downstream recovery of metals including lithium. This technology facilitates a more efficient and cost-effective extraction method from alternate sources to meet the increasing global demand.

A bacterium that degrades LAS and/or removes N is provided. The bacterium is taxonomically classified as Pseudomonas sp., and was deposited in China General Microbiological Culture Collection Center on Sep. 18, 2018, with the accession number of CGMCC 16502. The bacterium can be applied in the rural domestic sewage treatment, and has the effect of removing LAS and/or N pollution.

A modular and mobile unpressurized bioreactor for removing nitrate from water, and methods and systems thereof.

The present invention discloses a strain of Lysinibacillus fusiformis with methylamine degradability and the application thereof. This strain, named Lysinibacillus fusiformis GDUTAN2, was deposited on May 24, 2017 in the China Center for Type Culture Collection in Wuhan University, Wuhan City, Hubei Province with a deposit number of CCTCC NO. M 2017284. This Lysinibacillus fusiformis GDUTAN2 was Grain-positive and rod-shaped, and the colony appeared to be round, white and transparent, having a diameter of 1-2 mm. The Lysinibacillus fusiformis GDUTAN2 of the present invention can be applied to environmental restoration, degrading methylamine in the environment at a high degradation efficiency. When it degraded methylamine for 96 h at a substrate concentration of 130 mg/L, the degradation efficiency could reach 32.8%.

The present disclosure provides an Alcaligenes faecalis strain capable of degrading ethylene oxide and uses thereof. The deposit number of the strain is CGMCC No. 18435. This strain can be used in pollution treatment, for example, to treat industrial sewage or wastewater containing ethylene oxide, which greatly improves the decontamination ability of ethylene oxide in manufacturing industries. The present disclosure also provides a degradation agent for degrading ethylene oxide and a method for biodegrading ethylene oxide.