An electrochemical cell has a high-performance alloy cathode, an oxidation resistant anode, an electrolyte, and a power supply. The electrolyte is contained within growth media containing an aqueous solution and a plurality of transport ions therein. The high-performance alloy cathode and the oxidation resistant anode are submerged in the growth media at least partially. The power supply provides power to the oxidation resistant anode to attract the plurality of transport ions to treat the growth media.

A method and apparatus are provided for removing EPA regulated chemical species from industrial wastewater using green rust. The apparatus includes a green rust generator having an iron anode and a carbon cathode.

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).

A water treatment method to generate potable water and a fertilization or fertigation product is provided. The method comprises the steps of: passing a raw water stream through an anion exchange resin (14a, 14b) to generate a potable water output; regenerating the anion exchange resin (14a, 14b) using a weak potassium chloride solution to generate a product output comprising potassium sulphate, potassium bicarbonate, and preferably also potassium nitrate, suitable for use as or as a precursor to a liquid fertilization or fertigation product.

Provided are: a water treatment method that includes at least a denitrification step for denitrifying water to be treated with a denitrifying bacterium in the presence of a hydrogen donor, wherein the denitrification activity of the denitrifying bacterium can be maintained at a high level and thus the treatment speed can be increased; and a water treatment apparatus. The water treatment method includes at least a denitrification step for passing water to be treated through a biological treatment tank and denitrifying the same with a heterotrophic denitrifying bacterium in the presence of a hydrogen donor, wherein: molybdenum is added to the water to be treated to give a concentration of 0.01-1.0 mgMo/gN; a carrier is added to the biological treatment tank; and the nitrogen load to the carrier is controlled to 1.6 kgN/(m.sup.3-carrier.Math.d) or greater.

The present disclosure relates to a method for making a carbon aerogel electrode material. The method involves initially making a wet organic sol-gel form. The sol-gel form is carbonized at a temperature of from about 900° C. to about 1000° C., for from about 2 hours to about 4 hours. The carbonized sol-gel is then activated under carbon dioxide flow, for from about 0.5 hour to about 1.5 hours, at from about 900° C. to about 1000° C.

A high volume organic solvent polymer dispersion that is prepared by dispersing a hydrolysable polymer in a non-volatile water-soluble organic solvent, has a water content of not more than 1 mass %, and has a falling time at 50° C. of not more than 120 seconds which is measured by a Zahn cup with an orifice diameter of not more than 5 mm. Also disclosed is a method of using the high volume organic solvent polymer dispersion, which includes feeding the high volume organic solvent polymer dispersion into the ground.

The disclosure relates to a water treatment system which may include at least one reverse osmosis cartridge, at least one filtration cartridge, at least one pump and an enclosure.

The invention provides a water filtration system for removing heavy metals, residual chlorine, estrogens, bacteria and dust from tap water. The system includes a first adsorbent stage cartridge including approximately 40-65 wt. % of silver-impregnated activated carbon, approximately 1-10 wt. % of activated alumina, approximately 15-35 wt. % of ceramic balls, approximately 0.5-1 wt. % of chitosan and approximately 0.5-1 wt. % of kinetic degradation fluxion media. The second filtration stage cartridge includes an antifouling electrospun nanofiber membrane. A flow path is provided between the first adsorbent stage cartridge and the second filtration stage cartridge. The multiple stage water filtration system is capable of filtering water at a volume rate of at least approximately 2 liters per minute. In one embodiment, the nanofibers may be polyvinylidene fluoride doped with polyacrylonitrile and including bacteria-repellent methoxy polyethylene glycol side chains such that the nanofiber membrane has a water contact angle of approximately 55 degrees or less.

The present invention provides a method of preparing a graphene-wrapped cobalt Prussian blue nano-crystalline composite material, and a method of preparing a working electrode using the same and an application thereof. The preparation method of the composite material includes: dispersing a ligand solution containing cobalt and a graphene oxide solution in an aqueous solution fully by stirring and ultrasonication, next, adding a cobalt metal salt solution and fully stirring, and then calcining the mixture in an inert atmosphere after centrifugation and lyophilization to obtain the above composite material. The preparation method of the present invention is simple in operation, low in energy consumption and low in material costs and the like. The composite material is obtained by uniformly and closely wrapping cobalt Prussian blue nano-crystals in graphene with excellent conductivity, thereby significantly improving electron transfer efficiency and active site utilization rate of the composite material.