5356results about "Waste water treatment from animal husbandry" patented technology

The present invention is an industrial waste water microwave electrodeless ultraviolet photocatalysis-dual membrane separation coupling treatment device, the device mainly consists of a reactor (1), a membrane separation system (2), a microwave electrodeless ultraviolet light source system (4), an aeration system, and an ozone tail gas decomposition device (7) connected to the reactor, and an inlet and outlet water system, wherein: the upper and lower parts of the reactor are respectively the reaction zone and the aeration zone, which are separated by a water distribution plate (5); the membrane separation system The microwave electrodeless ultraviolet light source system is located in the reaction zone and is separated by a corrugated partition (3); the aeration system is composed of a microporous aeration head (6) and a blower (8), and the microporous aeration head is located in the aeration At the bottom of the zone, the blower sends air to the aeration zone through the air duct. The invention has the characteristics of high reaction rate, complete degradation of organic matter, long-term operation and the like, and has strong operability and high safety. It is suitable for the treatment of refractory organic industrial wastewater, and it is also suitable for sterilization and disinfection in the field of water supply.

Solutions containing microorganisms differing in characteristics from each other and living in symbiosis with each other and enzymes characterized by containing aerobic microorganisms, anaerobic microorganisms and at least one basidiomycete belonging to the family Pleurotaceae living in symbiosis, metabolites thereof and enzymes; carriers obtained by adsorbing the components of the above solutions onto finely ground carbonaceous materials; and porous materials obtained by adsorbing the components of the above solutions onto porous materials. Because of having various effects of absorbing, adsorbing and decomposing harmful matters, deodorizing, decolorizing, etc., these materials are applicable to various uses in the fields of agriculture and environment.

The invention relates to the fields of environmental technology and the breeding and processing of microalgae, in particular to a method for producing feed additive from livestock and poultry breeding wastewater and purifying breeding wastewater to reclaimed water. The method is characterized by comprising the following steps that: wastewater enters an acidification adjusting tank through a grille, and the acidified wastewater enters an anaerobic biochemical reactor for treatment and then enters an aerobic biochemical reactor; after the aerobic biochemical treatment, the obtained biogas slurry enters a settling tank for settling, the supernatant enters a membrane bioreactor for further aerobic treatment and is filtered by an ultrafiltration membrane, the generated ultrafiltration clear liquid is sterilized and neutralized and then enters a photobioreactor, algae are added into the photobioreactor to perform microalgae cultivation, and the algae liquid is discharged from the photobioreactor and then enters a flocculation and settling tank; and after flocculation and settling, the supernatant is used for water recycling, the concentrated algae liquid at the bottom enters a filter, and the separated microalgae slurry enters a fermentation / enzymolysis pot (tank) to perform fermentation / enzymolysis to be used as the feed additive. The invention has the advantages of high economic adaptability, zero discharge and the like.

Wastewater treatment systems and processes for: removal of solids, pathogens, nitrogen, and phosphorus from municipal and agricultural wastewater include nitrification of wastewater and increasing the pH of the nitrified wastewater by adding a metallic-containing salt and hydroxide to precipitate phosphorus to form a useable effluent having a specified nitrogen:phosphorus ratio that is useful as a fertilizer or spray for remediation of contaminated soils. The presence of infectious microorganism such as enteropathogenic bacteria and picarnoviruses will be reduced in the useable effluent. The precipitated phosphorus is recovered and used to form useable phosphorus products.

An economical, integrated system works in series with anaerobic digestion of animal waste to recover nitrogen and phosphorous, while also scrubbing the produced biogas.

A system and method of treating wastewater from an animal confinement operation. The system including at least a first lagoon receiving water from the confinement operation. The system further including a free surface water wetland, a subsurface flow wetland and a vertical flow recirculating media filter. The first artificial wetland including a pipe such that water from the lagoon flows into the first artificial wetland through an inlet of the pipe and is contained within the wetland. The first wetland further including a plurality of wetland plants. A second subsurface flow wetland and a vertical flow recirculating media filter on top of the subsurface flow wetland and wetland plants contained within a first pea gravel bed on top of a coarse gravel bed of the subsurface flow media filter such that water from the lagoon is received by the first wetland. A recirculation pump receiving water from the horizontal coarse gravel bed and the pump recirculating water to the wetland plants of the vertical flow recirculation media filter such that ammonia in the water is converted to nitrate and water as it falls vertically through roots of the wetland plants and the nitrate is converted to nitrogen and water the water flows horizontally through the subsurface flow wetland.

An apparatus and method for treating and reusing the wastewater discharged from agricultural animal farms. The apparatus and method of the present invention is designed to be a zero discharge system in which no wastewater will be discharged or spray irrigated. The wastewater effluent is first passed through a mechanical screen were bulk solids are separated and partially de-watered. The screened effluent is then directed to a primary plastic-lined earthen lagoon where it undergoes aerobic digestion utilizing specially selected bacteria. After treatment in the primary lagoon, the wastewater effluent is used to wash the floors of the hog houses or undergoes a purification phase including solids separation / denitrification, filtration and sterilization. The solids separation / denitrification phase (clarification) preferably takes place in an anoxic environment in preferably above-ground tanks where suspended solids removal will occur as well as denitrification for nitrate reduction. The clarification process may be facilitated through use of polymer addition. The majority of solids will be sent to a plurality of drying beds for de-watering and subsequent removal.

A system and method are provided for aerobic treatment of waste, such as animal or human waste. The method includes the continual introduction of microalgae. The high amounts of oxygen produced by the microalgae satisfies the biochemical oxygen demand in the treatment process and also allows oxidation of undesirable contaminants. Delivery of the microalgae at a desired rate is achieved by incorporation of a series of electrical and mechanical devices housed within a greenhouse type structure which optimizes growth conditions for the microalgae, and also allows the system to be automated.

The present invention is drawn to a unique apparatus and method for treating and reusing the wastewater discharged from agricultural animal farms. The apparatus and method of the present invention may be readily-sized and configured depending upon the amount and constituent(s) of the wastewater to be treated. In a first embodiment, the apparatus and method of the present invention is designed to be a zero discharge system in which no wastewater will be discharged or land applied. In use, the apparatus and method of the first embodiment may actually require addition of make-up water during periods of low rainfall to make up water losses due to evaporation and drift. It is contemplated that the only byproduct of the apparatus and method of the first embodiment may be a beneficial sludge if a sufficient number of installations are operated. In a second embodiment, the apparatus and method of the present invention provides a treatment system capable of reducing the nutrient loading in a step-wise fashion so that the wastewater can be used from different steps of treatment in order to apply the varying nutrient loads required by crops on a seasonal basis.

The invention discloses a heavy metal absorbent and a preparation method and use thereof. The heavy metal absorbent is prepared by using an inorganic mineral modified by a surfactant as a carrier and loading organic complexing agent on the carrier, wherein the inorganic mineral is bentonite, kaolin, kieselguhr, zeolite, aluminum oxide or iron oxide; the surfactant is cationic surfactant or nonionic surfactant; and the organic complexing agent is a compound containing a sulfydryl and an amino. The heavy metal absorbent has the advantages of stable performance, environment friendliness, high absorption capacity, high selectivity, convenient post-recovery treatment and the like. The absorption capacities of cadmium, mercury lead and other heavy metals all exceed 100mg / g, and the heavy metal absorbent can achieve good treatment effect in treatment of water and soil environments polluted by heavy metals.

Disclosed is a novel method for treatment of wastewater containing organic contaminant materials by oxidatively decomposing the contaminant materials by a radical reaction involving hydroxyl radicals. The method comprises passing the wastewater through a wastewater treatment conduit (6) comprising a straightly tubular member (6) and a radical generating part consisting of a truncated pyramidal or conical tubular member (1) having an inner surface layer of titanium dioxide to serve as a positive electrode and connected to the upstream end of the straightly tubular member and a negative electrode rod (4) coaxially held relative to the truncated tubular member and applying a pulsed DC voltage having a rectangular wave form at a specified frequency. The efficiency of wastewater treatment can be improved by providing an ultrasonic part consisting of a truncated tubular member similar (7) to the above and connected to the downstream end of the straightly tubular member and an ultrasonic vibrator (8) mounted thereon to emit pulsed ultrasonic waves.

An apparatus for sterilizing or disinfecting fluids, which comprises a fluid conduit, an ultraviolet light source, which is at least partially within the fluid conduit, and an air drive unit coupled to the fluid conduit. The ultraviolet light source generates an ultraviolet light, which kills microorganisms in the fluid, thus sterilizing or disinfecting the fluid. The air dive unit creates air bubbles in the fluid, such as for fish tanks, fish hatchery ponds, or the like. In accordance with one embodiment of the present invention, the ultraviolet light source comprises an ultraviolet light bulb being surrounded by a protective sleeve. The protective sleeve preferably comprises a UV transmissive material, which may comprise a fluoropolymer material, such as PTFE, FEP, PFA, AF and Tefzel ETFE.

The present invention provides an integrated system for treatment of biodegradable waste, including sewage sludge, forestry waste, food waste, agricultural waste, municipal waste, and the like. The integrated system comprises an anaerobic reactor, at least one aerobic reactor, a filtration device, and a desalinization device.

The invention discloses a composite microorganism viable bacteria preparation, which contains pediococcus, yeast and bacillus with the total bacteria count of more than 1 billion per gram. The invention also discloses a method for preparing the composite microorganism viable bacteria preparation, which comprises the following steps: performing amplification liquid culture on various strains respectively according to a conventional method in the field; mixing the materials according to a required proportion; and performing solid fermentation, drying and pulverization to obtain the composite microorganism viable bacteria preparation. The invention also discloses application of the composite microorganism viable bacteria preparation in preparing an organic waste water purifying agent and an aquaculture water body purifying agent, a deodorizer, a degreasing agent or an agent for removing pipe blockages for the hygiene of a refuse tip, a public place, an agricultural product market or a kitchen, feed additives in poultry and animal husbandry or pet culture, and preparations for controlling agricultural microorganism diseases. The composite microorganism viable bacteria preparation can effectively decompose a large amount of putrescent organic matters, inhibit the growth of harmful microorganisms and eliminate peculiar smells, and has the characteristics of high ammonia nitrogen removal rate, no generation of residual sludge, effective deodorization, low cost and the like.

Methods and devices are disclosed for converting predominantly organic waste materials, such as sludge, into useful byproducts.

Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce, often associated, offensive odors. Irrigation of oxygenated liquid on top of a permeable cover effectively creates an aerobic treatment zone at the top of the lagoon whereby odorous gases being produced anaerobically below the cover are metabolized within this zone before being released to the atmosphere. This same system also serves to increase evaporation from the overall waste handling system therefore substantially reducing or eliminating the need for land application of treated wastewater.

Novel methods and apparatuses are disclosed for the treatment of wastewater to reduce often associated offensive odors by promoting aerobic conditions through decreasing the amount of oxygen required to maintain aerobic cultures and / or aerobic biological activity in the wastewater. Also, the wastewater is screened or otherwise separated the wastewater to remove or concentrate the solids which are anaerobically digested. By concentrating the solids, a smaller digester can be used. The anaerobic digestion produces biogas that may be collected and used, or burned by a flare or oxidized by a semipermeable membrane to deodorize the biogas. The heat produced from the biogas may have a variety of uses, including raising the temperature of the anaerobic digester and the bacterial metabolism. The wastewater is also clarified to remove nitrogenous and organic carbon wastes.

Methods and systems for treating a waste stream in a waste treatment system involve performing a unit process of the waste treatment system by contacting the waste stream with oxyhydrogen-rich gas generated on-site by an oxyhydrogen gas generator that implements water dissociation technology. In a preferred embodiment, the oxyhydrogen gas generator involves applying a pulsed electrical signal to a series of closely-spaced electrodes that are submerged in the waste stream to produce oxyhydrogen-rich gas from a water component of the waste stream. Operation of the oxyhydrogen gas generator in the waste stream may accomplish one or more unit processes for waste treatment, such as conditioning, stabilization, thickening, and dewatering, among others. At least a portion of the oxyhydrogen-rich gas can be conveyed for a second use in the waste treatment system, such as a source of combustible fuel for incineration or power generation, for example.

The present invention describes improved methods and systems for treating waste water and solid waste, which may include the addition of catholyte and anolyte. The methods and systems of the present invention may be used to treat waste water and solid waste from animal farms, such as for example, hog farms, dairy farms, and cattle and sheep ranches. The methods and systems of the present invention may also be used to treat waste water from other sources, such as human waste or farm runoff from irrigation.

A process for treating a biomaterial waste stream is described. The process may form part of a waste fermentation system. The treating process can degrade at least a portion of the biomaterial waste stream into other components or materials. These other components or materials may be reintroduced into a fermentation process as a nutrient for a fermenting organism.

A process for removal and recovery of nutrients and recycling of water from digested manure or other organic wastes. A first step involves separating waste from an anaerobic digester into digested liquids, digested solids, and biogas. A second step involves precipitating solids from the digested liquids. A third step involves stripping ammonia from the digested liquids. A fourth step involves injecting an exhaust stream of carbon dioxide drawn from the co-generator into the digested liquids to reduce the pH and raise the temperature of the digested liquid. A fifth step involves recycling the digested liquids back to the anaerobic digester for use in diluting in coming solid wastes. A sixth step involves passing the excess ammonia stripped from the digested liquid through the digested solids to recover nitrogen through aborption with the resultant digested solids being usable as a biofertilizer with a high nitrogen content. A seventh step involves capturing the biogas for use in a co-generation system.

The present invention in a first aspect provides a method and a system for stripping volatile compounds such as ammonia from e.g. fermentation liquids. Part of the ammonia is stripped from the liquid in a stripper system comprising a shunt through which liquid such as e.g. fermentation medium comprising a biomass can be diverted in the form of a side stream in liquid contact with a main fermentor(s). The stripper system is connected to an evaporator. In the evaporator aqueous liquid is heated at a pressure below atmospheric pressure whereby vapour is developed at a temperature below 100° C. The vapour from the evaporator is directed to the liquid medium comprising ammonia and this results in ammonia being stripped from the liquid and transferred to the vapour phase. The vapour phase is condensed in a first condenser at a low pressure, e.g. a pressure well below 1 bar, and the liquid thus obtained is further treated in a stripper unit at a higher pressure, such as e.g. a pressure at or above 1 bar, to obtain a more concentrated solution of ammonia. When stripped for at least part of the ammonia the liquid initially obtained from the biogas reactor and diverted to the shunt can be returned to the reactor.

An organic light emitting display including an ultraviolet protecting layer and a method of manufacturing the same include a lower substrate; an ultraviolet hardening adhesive formed on the lower substrate; a driving unit and a light emitting unit deposited on the lower substrate and surrounded by the ultraviolet hardening adhesive; an encapsulation layer covering the driving unit and light emitting unit and preventing moisture and oxygen penetration from an outside; an upper substrate arranged on the encapsulation layer facing the lower substrate and fixed by the ultraviolet hardening adhesive; and an ultraviolet ray blocking film formed in a region to block the driving unit and the light emitting unit from being irradiated by UV rays radiated to harden the ultraviolet hardening adhesive. The ultraviolet ray blocking film is disposed in the encapsulation layer or on the upper substrate to protect the driving unit and light emitting unit from ultraviolet rays.

This is a method and apparatus for combined gravity separation-filtration for conducting physical, physical-chemical, chemical, and biological processes in solid-liquid systems; including but not limited to separation of dispersed solids from liquids, separation of alkalinity from the liquid stream, chemical acid-base interactions, chemical oxidation-reduction, chemical dissolution-precipitation, physical chemical adsorption, ion exchange, mass transfer in any combinations of multiple liquid-solid-gas phases, biological oxidation-reductions, biological growth, and combinations of these processes; gravity separation steps can be conducted in rectangular horizontal unidirectional flow clarifiers, rectangular or circular radial flow clarifiers, rectangular or circular vertical flow clarifiers, lamella clarifiers, suspended sludge blanket clarifiers, fluidized bed separators, and combinations thereof, wherein the filtration step is disposed in the upper portion of the combined process or side-by-side with clarification step; filtration steps are conducted in single or multiple attachment media filters, including particulate filter media either heavier than liquid or floating; liquid filtered through the attachment media is collected by holed pipes, screens, or membranes. Reagents can be introduced before the gravity separation and / or before filtration steps. This method and apparatus can be used for municipal and industrial water purification and wastewater treatment for removal of a broad range of admixtures including BOD / COD, suspended solids, nitrogen and phosphorus, organics imparting color, salts of hardness, heavy metals, and other constituents of admixture.

The invention relates to a method for producing a high-efficiency composite microbial agent by using livestock liquid dung, and belongs to the technical field of environmental microbiology and agricultural science. The method comprises the following steps: diluting livestock liquid dung or livestock feces with water; after hydrolysis and acidification treatment, performing standing and settlement for desilting; mixing a supernatant obtained with a photosynthetic bacterial solution for anaerobic culture; using the mixed solution as a base liquid and stepwise adding lactobacilli, saccharomyces, bacillus thuringienesis and actinomycete into the base liquid in a proportion; and after anaerobic culture and aerobic treatment, finally filling the mixture into a biological fluidized bed for further treatment to obtain the high-efficiency composite microbial agent. The microbial agent is rich in the photosynthetic bacteria, the lactobacilli, the saccharomyces, the actinomycete, the bacillus thuringienesis, azotobacter, nitrobacteria, denitrifying bacteria and other beneficial organisms, and be widely used in agriculture, livestock breeding, fresh water aquaculture, organic sewage treatment, microbial deodorization, and other aspects. The technology is suitable to be used by various livestock farms (raisers) for liquid dung treatment.

One embodiment of the present disclosure may take the form of a watering device for animals with continuously flowing water to attract the attention of the animal. To create flowing water, a water screw device may be utilized within the watering device to move water from a lower bowl of the device to an upper bowl. The water screw may be configured such that the electrical components of the water screw remain separated from the water of the watering dish to remove the possibility of electrocution of the water. Rather, only the mechanical components of the water screw device may contact the water of the watering device while the electrical motor of the water screw remains safely out of the water.

A process for the recovery of nitrogen from anaerobically digested liquid waste and for the collection of the nitrogen as nitrate compounds that can be used to produce fertilizer and compost, includes stripping ammonia from anaerobically digested liquid waste, and converting the ammonia into nitrates via nitrification.