421 results about "Bio filtration" patented technology

A biofilter system of the present invention utilizes an Alternating-Aerobic-Anoxic (AAA) process in a single reactor to provide efficient and cheap removal of carbonaceous materials, nitrogenous materials, and/or mixtures thereof from aqueous waste. The biofilter system of the present invention is particularly suitable for treating aqueous waste from aquaculture, industrial processes and animal husbandry. The biofilter system includes: a main biofilter chamber containing therein aerobic and anaerobic bacteria without physical separation; an inlet port and an outlet port connected to the main biofilter chamber; and a means for oxygenating the aerobic and anaerobic bacteria in the main biofilter chamber, including means for timing the oxygenation of the aerobic and anaerobic bacteria to provide alternating periods of high-oxygen conditions and anoxic conditions.

A biological deodouring process for the stink gas features that the stink gas is forced to pass through the biologic filter material prepared from anticorrosion plant fibres, porous materia, or theirmixture through inoculating microns (yeast, bacteria, etc) to it. Its apparatus is composed of blower, gas washing pool and biological filter tower. Its advantages are simple apparatus, high effect, low cost, and no secondary pollution.

The invention discloses a high-efficiency domestic sewage treatment device, which comprises a base, a purification box and a storage box. Rollers are installed at four corners of the bottom of the base, and a vibrating vibration device arranged obliquely is arranged on the upper part of the inner cavity of the purification box. Grille, the side wall of the purification box close to the lower end of the vibration grid is provided with a sewage outlet, the side wall of the purification box close to the higher end of the vibration grid is provided with an excitation motor, and the inner cavity of the purification box The lower part is provided with a quartz sand filter material layer, a PP cotton layer, an activated carbon adsorption layer and a biological filter membrane layer in sequence from top to bottom. An ozone generator is installed on the side wall of the storage box, and the ozone generator passes through the gas pipeline. Connected to the storage box. The present invention can effectively remove various impurities in the sewage through the multi-layer treatment of the sewage, has good sewage treatment effect, more thorough purification, simple structure, multiple functions, convenient use and strong practicability.

An aquaculture water quality ecology system to improve water quality in an aquaculture pond by guiding water into a physical filtration tank at the top of the system, then flow into a sedimentation tank to rid of algae, pathogenic bacteria, and parasites before being dripped down to a separately provided ecology process tank containing bio-filtration balls; drops being broken into even smaller drops by the filtration balls; air blower on one side and an exhaustion pipe on the other side to blow away hazardous gases to the ambient leaving the clean water after the final filtration to flow into the aquaculture pond.

A multi-stage treatment for effluent or sewage is carried out by pre-oxidation treating for waste calcium water in production of sodium alginate, decalcifying treating, solid-liquid separating for mixed effluent, oxidation pre-treating, biological filtering, oxidation treating, air-floating treating, flocculating, depositing, efficient ozone circulation and oxidation treating for mixed comprehensive water, de-coloring, filtering, biological oxidation treating and reverse osmosis treating. It's safe, reliable, rational, standard, cheap and efficient, it has better quality and zero-effluent discharge, and saves water sources.

The present invention relates to biofilter systems and the biofilter media employed in such systems, as well as, methods of using same to remove odour causing compounds from waste gas streams. The biofilter media has a plurality of expanded glass granules. Each expanded glass granule has a coating thereon. The coating includes a bonding agent, an adsorptive agent, microorganisms and nutrients. When used in a biofilter system, the biofilter media is highly efficient at removing from waste gas streams hydrogen sulfide at high concentrations in low empty bed residence times.

The invention, belonging to the technical field of air environmental pollution treatment, biofiltration and environmental pollution treatment, discloses a method for removing volatile organic chemicals (VOCs) by using nano Na2Ti6O13/TiO2 UV light catalytic oxidation cooperating with biofiltration. The method comprises the following steps that: organic waste gases enter into a photocatalytic device through a spray tower for catalyzing, then the gases enter into a biofiltering tower for filtering from the bottom of the biofiltering tower, wherein, the organic waste gases enter into the photocatalytic device for catalytic reaction, and partial VOCs are subject to photocatalytic oxidation by a nano Na2Ti6O13/TiO2 catalyst to form a water-soluble compound; in the biofiltering tower, the rest VOCs are degraded into CO2 and water and then discharged by specific biological bacterial species, and the biofiltering tower is communicated with a microbe activity regulation system to regulate the activity of the bacteria. The invention can efficiently decompose the VOCs in industrial waste gases, and can widely applied in treating the industrial gases containing VOCs.

The invention relates to the technical field of aquaculture, and discloses an internal circulation fishpond and a circulating water treatment process. According to the internal circulation fishpond and the circulating water treatment process, an air striping device, a physical filtration device and a biological filtration device are arranged in vacant regions, such as corners of the fishponds; multiple functions, such as plug flow, oxygenation, degassing, solid filtration and biological filtration, are integrated in the design of the fishpond; through arranging an air stripping pump, a moving bed biofilter and a vertical flow precipitator and the like, the water treatment function of the fishpond is perfected and enhanced, and the fishpond has the functions of oxygenation, degassing, physical filtration and biological filtration; the circulating speed of a water body is reduced while the solid utilization rate is improved; through reducing the treatment load amount of a water treatment system, the circulating speed of the water body and the operating energy consumption of a circulating water pump are reduced.

The invention belongs to the technical field of environment protection, and in particular discloses a sewage treatment method which specifically comprises the steps of inputting sewage into a mechanical grid, feeding the sewage passing through the mechanical grid into a regulating reservoir, further inputting the sewage in the regulating reservoir into a sewage cooling tower, inputting the sewage which is cooled by the cooling tower into a coagulative precipitation tank, feeding the sewage subjected to coagulative precipitation into a CASS (Cyclic Activated Sludge System) tank, and passing the sewage which is treated by the CASS tank through a biofilter so as to finally obtain treated water. The sewage treatment method has the advantages that the sewage treatment method is high in impact load adaptive capacity, not easy to have sludge bulking, small in floor space and simple and convenient to manage.

The invention relates to an oil-containing alkaline wastewater treatment process and equipment. The process uses oil-containing alkaline wastewater and industrial acid water as raw material for the neutralization reaction. Qualified water after the neutralization reaction is pre-treated through an air floatation method, enters a biochemical reaction pool for the biochemical treatment when being cooled by a cooling tower and aerates in the biochemical pool. Oil in the water is degraded by microorganism. The sludge settlement treatment is implemented through a sediment pool to remove suspenders in the water. The wastewater after the sediment enters a biological filter again for the deep treatment to satisfy the discharging requirements. After the treatment, the index COD of the water is less than or equal to 80mg/l, SS is less than or equal to 10mg/l and oil is less than or equal to 5mg/l. With the biochemical technology used for the oil removal, the consumption of a system is reduced. With the biological filtration used as a deep treatment system, the consumption of ore fillers is reduced. The invention has the advantages of less investment, low operation cost, wide resource, sufficient reaction, good treatment effect, compact structure and convenient management.

The invention relates to a combined rural sewage treatment process and system. The process comprises the following steps: 1) efficient anaerobic treatment of wastewater; 2) multi-filler biological filtration; and 3) artificial wetland purification. In the system, an outlet of a grating well is connected with an inlet of an efficient anaerobic pond through a grit basin; the outlet of the efficient anaerobic pond is communicated with a spraying system on the upper part of a multi-filler biological trickling filter through a pump; the outlet of the multi-filler biological trickling filter is communicated with an artificial wetland through a secondary sedimentation tank; and the artificial wetland discharges standard purified water. By the process, most of the CODcr, BOD5, NH3-N and the like in the wastewater are removed, wherein the removal rate of CODcr can reach 80-85%, the removal rate of BOD5 can reach 90-95%, and the removal rate of NH3-N can reach 70-80%.

The invention discloses a novel process for treating fermentation waste gas of amino acid by utilizing a biofilter. Waste gas of zymotic fluid is subjected to Venturi dedusting and electrostatic dedusting, then fume containing extremely high COD and condensate are removed through a gas-liquid separator, and the condensate enters a sewage treatment system; and the fume enters the biofilter when the temperature is reduced to 35 DEG C through spraying, VOC in the fume is decomposed under the action of microorganisms, and gas which reaches the standard is exhausted from an exhaust funnel. The biofiltration and deodorization of the invention can treat certain specific malodorous gas, can also flexibly treat complicated mixed odor by converting biofiltration bed fillers and microbial strains, and have simple operation and no secondary pollution. The treatment process can greatly reduce the content of pollutants in the fume, is proved that the dehumidification rate and the removal rate of the volatile organic compounds can reach over 80 percent through a laboratory test, a pilot scale test and mass production, improve the living environment of surrounding residents, greatly reduce environment protection pressure, and has remarkable social benefit and environmental protection benefit.

The invention provides a method for filtration deodorization by utilizing biological soil. The method is characterized in that obnoxious gas is collected and humidified and then is evenly distributed onto the bottom of the biological soil by a gas distributing device, and purification on obnoxious gas is realized by absorption of the biological soil and micro organism in the biological soil; and the micro organism in the biological soil is mainly pseudomonas and thiophilic bacillus. The invention also provides a filtration deodorization device utilizing the biological soil. The invention adopts biological filtration method to remove odour, hydrogen sulphide and organic gas in odour are absorbed on the surface of particle of soil filtering layer and on the surface of micro organism cell in the filtering layer, odour is absorbed by micro organism, organic gas participates micro organism metabolism and is oxidated into carbon dioxide and water; odour and soil provide oxygen, moisture and mineral nutrient components for metabolism of micro organism, deodorization effect is good, and no secondary pollution is produced.

Disclosed is a biofilter system for removing volatile organic compounds, generated from various industrial facilities, such as petrochemical plants, refining plants and paint plants, and environmental facilities including sewage treatment plants. The biofilter system comprises a volatile organic compound (VOC) load equilizing portion, a VOC-containing contaminated air transferring portion, a biofiltering portion, and a storing portion for adjusting pH and nutrients in the biofiltering portion. By using such system, an offensive odor and VOC evolved from various industrial facilities and environmental facilities can be efficiently controlled. In addition, even in production processes and storage facilities at which high VOC concentration regulating materials are discontinuously discharged, VOC can be effectively removed.

The invention discloses dyeing reclaimed water recycling process and equipment in a dyeing industry. With dyeing waste water subjected to secondary pretreatment as a water source, process water for dyeing production is obtained through biochemical materialized pretreatment and reverse osmotic treatment. With reverse osmotic device desalination as a center and multi-phase pump dissolving vapor, biological filtration, flocculating filtration, active carbon filtration and ion exchange as pretreatment, the invention effectively ensures quality of water and the service life of the equipment. The invention provides the follow-up reclaimed water recycling process and equipment for waste water treatment of the dyeing industry, and produced water is used as process water for dyeing production. The invention has the advantage of reasonable process design and simple and stable for operating, and a water discharged index can meet the water standard of the dyeing industry. The process performs active effects on aspects for saving water resource, saving energy, reducing emission, reducing operation cost and the like.

A filtration bed support for biolytic filtration wherein the filtration bed comprises a bed of solids in various stages of decomposition ranging from raw unprocessed organic material on the surface of the bed to fully decomposed humus which forms the bulk of the bed. The bed is kept from blocking by living organisms. The support comprises a three dimensional humus matrix lattice.

The invention discloses a depth treatment method and system of wastewater in an industrial park, belonging to the field of sewage treatment. The method comprises the following steps of: carrying out ozone-ultraviolet catalytic oxidation treatment on the treated wastewater in the industrial park after precipitation, and oxidizing cyclic organic matters, partial toxic substances and non-degradable substances contained in the discharged water by ozone and ultraviolet ray; adding sodium hydrogen sulfite into the discharged water subjected to ozone-ultraviolet catalytic oxidation treatment, and reducing active oxygen in the oxidized wastewater by the sodium hydrogen sulfite; enabling the reduced discharged water to enter a biological aerated filter for being subjected to aeration and biological filtering treatment, and removing organic matters and ammonia nitrogen; and filtering the discharged water of the biological aerated filter, and after filtering, using the discharged water without the suspended matters as standard water for reuse. The method disclosed by the invention has the characteristics of high impact load resistance, strong treatment capability, short process flow, small occupied area of the system, and good treatment effect.

An improved aquarium filtration system is provided which includes a bio-reactor chamber. The bio-reactor chamber includes a plurality of bio-balls which have a high surface area for collecting bacteria for biological filtration. The bio-reactor includes one or more pumps for pumping both water and air into the bio-reactor chamber. Preferably, the oxygenated water creates protein laden foam and the bio-reactor chamber includes a removable protein collector. To this end, the bio-reactor chamber includes a vertical column for carrying the protein laden foam into the removable collector.