C05F7/00

SYSTEM AND METHOD OF TREATING WASTEWATER USING A PORTABLE, NON-BIOLOGICAL, CYCLIC SEWAGE TREATMENT PLANT
20220112111 · 2022-04-14 · ·

A mobile sewage treatment and water reclamation system and method of use thereof for rapid deployment to augment existing wastewater systems and/or provide interim service in lieu of permanent facilities, includes: (a) a denaturing stage wherein raw sewage is first ground into suspendable grit, its pH alternatively or collectively lowered to kill acid-sensitive bio-organisms, and raised to kill base-sensitive bio-organisms, and then neutralized; (b) a clarifying stage employing an inverted-cone tank to circulate the solution after injection with chemicals to flocculate small particles for collection in a layer for siphoning off; and (c) a disposal stage wherein clarified water passes through media filters to remove remaining solids and odors, the effluent water being clean enough for irrigation, aquatic life and discharge into waterways; and wherein sterile sludge is pressed into semi-dry solids, then dried, crushed, powdered and bagged for use as high-nitrate biomass fertilizer or for fossil-fuel power co-generation applications.

SYSTEM AND METHOD OF TREATING WASTEWATER USING A PORTABLE, NON-BIOLOGICAL, CYCLIC SEWAGE TREATMENT PLANT
20220112111 · 2022-04-14 · ·

A mobile sewage treatment and water reclamation system and method of use thereof for rapid deployment to augment existing wastewater systems and/or provide interim service in lieu of permanent facilities, includes: (a) a denaturing stage wherein raw sewage is first ground into suspendable grit, its pH alternatively or collectively lowered to kill acid-sensitive bio-organisms, and raised to kill base-sensitive bio-organisms, and then neutralized; (b) a clarifying stage employing an inverted-cone tank to circulate the solution after injection with chemicals to flocculate small particles for collection in a layer for siphoning off; and (c) a disposal stage wherein clarified water passes through media filters to remove remaining solids and odors, the effluent water being clean enough for irrigation, aquatic life and discharge into waterways; and wherein sterile sludge is pressed into semi-dry solids, then dried, crushed, powdered and bagged for use as high-nitrate biomass fertilizer or for fossil-fuel power co-generation applications.

PROCESSING APPARATUS, PROCESSING METHOD, AND POWDER BODY
20220088651 · 2022-03-24 ·

Provided is a processing apparatus for processing water-containing organic matters. The processing apparatus includes: a processing tank configured to store the water-containing organic matters; a stirring unit configured to stir the water-containing organic matters; a heater configured to heat the processing tank; an exhaust unit configured to exhaust gas from the processing tank at a rate from 1 m.sup.3/min to 300 m.sup.3/min; and an ion gas supply unit configured to supply ion gas into the processing tank with the exhaustion of the gas from the interior of the processing tank, the ion gas having an ion density of at least 2,000,000 pcs/cc, wherein the heater heats an interior of the processing tank while the stirring unit stirs the water-containing organic matters, and the ion gas is supplied into the processing tank according to the exhaustion by the exhaust unit, whereby processing the water-containing organic matters.

METHOD FOR SLUDGE DEWATERING USING KITCHEN WASTE TO SYNERGISTICALLY ENHANCE ANAEROBIC BIOLOGICAL ACIDIFICATION AND LOW-TEMPERATURE THERMAL HYDROLYSIS OF EXCESS SLUDGE

A method for sludge dewatering using kitchen waste to synergistically enhance a coupling of an anaerobic biological acidification and a low-temperature hydrothermal of excess sludge is disclosed. The method includes the following steps: first, uniformly mixing the excess sludge from a sewage treatment plant and the kitchen waste for an anaerobic biological acidification reaction at 36.5-37.5° C. for 2-4 days; then, concentrating the acidified mixture by centrifugation at a speed of 3000-5000 rpm for 5-10 min; performing a low-temperature thermal hydrolysis treatment on a residue obtained after removing a supernatant for 15-30 min at 100-140° C.; and after the thermal hydrolysis treatment is finished, cooling and dewatering to obtain a dewatered sludge cake and a dewatered filtrate. The new method realizes high-efficiency sludge dewatering and innocuous utilization of dewatered filtrate and sludge cake without adding chemical reagents and effectively avoids generating hardly-degradable chemical oxygen demand.

METHOD FOR SLUDGE DEWATERING USING KITCHEN WASTE TO SYNERGISTICALLY ENHANCE ANAEROBIC BIOLOGICAL ACIDIFICATION AND LOW-TEMPERATURE THERMAL HYDROLYSIS OF EXCESS SLUDGE

A method for sludge dewatering using kitchen waste to synergistically enhance a coupling of an anaerobic biological acidification and a low-temperature hydrothermal of excess sludge is disclosed. The method includes the following steps: first, uniformly mixing the excess sludge from a sewage treatment plant and the kitchen waste for an anaerobic biological acidification reaction at 36.5-37.5° C. for 2-4 days; then, concentrating the acidified mixture by centrifugation at a speed of 3000-5000 rpm for 5-10 min; performing a low-temperature thermal hydrolysis treatment on a residue obtained after removing a supernatant for 15-30 min at 100-140° C.; and after the thermal hydrolysis treatment is finished, cooling and dewatering to obtain a dewatered sludge cake and a dewatered filtrate. The new method realizes high-efficiency sludge dewatering and innocuous utilization of dewatered filtrate and sludge cake without adding chemical reagents and effectively avoids generating hardly-degradable chemical oxygen demand.

METHODS AND APPARATUS FOR NUTRIENT AND WATER RECOVERY FROM WASTE STREAMS
20210317016 · 2021-10-14 ·

The present invention is directed to equipment, systems and methods for recovering nitrogen, potassium, phosphates and water from wastewater effluents. More particularly the invention discloses methods and equipments for treating waste streams to produce water that can be discharged to the environment and concentrated potassium ammonium struvite solid fertilizers.

Method for Nitrogen Removal and Nitrogen Salts Recovery Using Carboxylated Cellulose Extracted by Nitro-oxidation

A method of treating contaminated water, such as wastewater, with carboxylated cellulose to remove ammonium and nitrogen-containing impurities is claimed. Carboxylated cellulose extracted by nitro-oxidation has negatively-charged functionality and forms an aggregate when exposed to positively-charged impurities in contaminated water. The aggregate, nitrogen-containing impurities, and by-products from the nitro-oxidation process can be isolated to provide a fertilizer or fertilizer component.

Method for Nitrogen Removal and Nitrogen Salts Recovery Using Carboxylated Cellulose Extracted by Nitro-oxidation

A method of treating contaminated water, such as wastewater, with carboxylated cellulose to remove ammonium and nitrogen-containing impurities is claimed. Carboxylated cellulose extracted by nitro-oxidation has negatively-charged functionality and forms an aggregate when exposed to positively-charged impurities in contaminated water. The aggregate, nitrogen-containing impurities, and by-products from the nitro-oxidation process can be isolated to provide a fertilizer or fertilizer component.

WASTE TREATMENT APPARATUS AND METHOD

The present invention relates to apparatus and methods of liquid purification and the subsequent production of useful by-products. A variety of liquids may be purified by the method and apparatus, including water and hydrocarbon mixtures/sludges. The method of treating waste products comprises the steps of adding an absorbent to the waste product to form a absorbed solid, semi-solid or fluid matrix, the matrix being then subjected to an increase in temperature. The apparatus comprises a material inlet, a heated generator tube, one or more outlets being connected with the heated generator tube, and a material outlet.

BIOLOGICAL SOLIDS PROCESSING

A method of processing biological solids includes blending a sludge with calcium oxide and delivering the blended sludge and calcium oxide to a pressurized container; injecting, into the blended sludge and calcium oxide in the pressurized container, an additive capable of exothermic reactions with the calcium oxide; regulating pH in the pressurized container to produce class A biological solids from the sludge; and pumping the blended sludge, calcium oxide, and additive from the pressurized container to a reactor. A system used for this process include sources of calcium oxide and biological solids, an additive injector, and a pressurized reactor.