519 results about "Foul odors" patented technology

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.

PCT No. PCT/JP96/00748 Sec. 371 Date Nov. 15, 1996 Sec. 102(e) Date Nov. 15, 1996 PCT Filed Mar. 22, 1996 PCT Pub. No. WO96/29099 PCT Pub. Date Sep. 26, 1996Hydrogen sulfide is dehydrogenated to generate a HS group and an S group. The HS group is oxidized to generate sulfuric acid, which is bonded to a metal. The S group is polymerized with a CH3S group to generate methyl trisulfide or methyl tetrasulfide, which is adsorbed to an adsorbent. Methyl mercaptan is dehydrogenated, for example, to generate a CH3S group. A portion of the CH3S group is oxidized to generate methanesulfonic acid, which is bonded to a metal. Another portion of the CH3S group is polymerized with the CH3S group itself to generate methyl disulfide, at least a portion of which is adsorbed to an adsorbent. Still another portion of the CH3S group is polymerized with the S group to generate methyl trisulfide or methyl tetrasulfide, which is physically adsorbed to an adsorbent. In this manner, malodor components including hydrogen sulfide and methyl mercaptan can efficiently be removed without producing or release of harmful secondary products. A simple-structure, compact deodorizing apparatus including appropriate metal oxide catalyst and an adsorbent material suitable for achieving the above deodorizing functions is incorporated in a toilet bowl.

Bags or liners having incorporated therein an effective amount of odor management agents including a counteractant agent, a neutralizing agent and optionally, a masking agent, whereby the odor management agent imparts no perceptible scent to the bags or liners, such that the bags or liners are substantially free of fragrance while the odor management agent reduces malodor emanating from products disposed within the bag. Further, the invention is drawn to web materials for use in forming the bags or liners having odor management agents. The odor management agent is disposed within the bag or dispersed substantially uniformly throughout the web.

The invention provides a method and product for mitigating or eliminating malodor(s) with an aqueous liquid deodorizing composition, in which said composition contains about 0.1-3% water soluble/dispersible polymer, about 0.01-5% fragrance, about 1-20% water soluble/dispersible volatile solvent, and, the remainder, water.

An air treating composition for eliminating airborne malodors and/or sanitizing air in combination with a spray valve and actuator and spray performance parameters providing maximum dispersion of the composition is disclosed. The particles of the composition are small so that the active component is dispersed into air as a fine dispersion to provide more contact with malodors and to provide quick absorption of malodors and/or bacteria. The particle size of the composition is controlled through the valve and actuator dimensions, as well as the formulation requirements of the composition. The air treating composition includes water, a low molecular weight polyol, and a propellant The composition may also include one or more adjuvants such as an emulsifier, a co-solvent, a fragrance, a corrosion inhibitor, a pH adjusting agent and the like.

The invention discloses a method for processing foul waste gas contained sulfur and dust. The waste gas is processed dedusting using liquid absorption, water solution contained additive is used as absorption washing liquid, the additive comprises a washing agent, the washing agent has washing organism, is one or some of the surface active agent, washing agent, emulsifying agent and dispersing agent, the absorption washing liquid also can comprise alkaline matter or oxidizing agent. Waste gas is deprived hazardous substance such as sulphide, hydrocarbon further after being absorption and washing. The method can deprive various contamination in foul waste gas contained sulfur and dust effectively, has advantages of high purifying rate and long device running period. The method can be used for purifying various foul waste gas contained sulfur and dust, especially in catalyst production process.

A product for substantially eliminating existing foul odors (such as those associated with materials such as hydrogen sulfide) and substantially preventing the production of new foul odors in matter, in open treatment environments is disclosed and comprises calcium nitrate and calcium carbonate.

The invention discloses a method for treating sulfur- and hydrocarbon-containing foul waste gas. The waste gas enters a heat exchanger for cooling, condensed water is separated, the cooled waste gas enters an absorption tower to be absorbed by an absorbent distillate, a fresh absorbent exchanges heat with a rich absorbent discharged by the absorption tower and then is cooled by a cooling system, and the cooled absorbent enters the absorption tower; and the waste gas subjected to absorptive purification enters an adsorption tower for adsorptive purification, the adsorption tower is segmentally filled and respectively filled with silica gel adsorbents and activated carbon adsorbents, and heat exchangers are arranged among the adsorbents in each segment. The method can thoroughly purify the sulfur- and hydrocarbon-containing foul waste gas discharged by chemical engineering storage tanks, refining devices and the like, and has the advantages of simple treatment process and no potential safety hazard.

The invention relates to a microorganism cleaning bactericide capable of removing multiple poisonous and harmful substances and a preparation method thereof. The microorganism cleaning bactericide comprises the mixture of compound balsamic extract liquor and the fermentation product of compound microbial bacterium system protospecies liquid in an industrial fermentation culture solution. The invention utilizes the high-efficiency adsorption, assimilation and metabolism of the microbial bacterium system to purify and treat aldehydes, benzenes, alcohols, esters, phenols, amines, alkanes, sulfur-containing substances, TVOC, putrefying bacteria secreta, obnoxious gases of pathogenic bacteria, pathogenic bacteria secreta and the like, or the harmful substances of the solution thereof by the degradation and decomposition processes; harmful substances, such as formaldehyde, benzene, volatile organic compounds and the like in environment, which are released by housing decoration, office furniture and new car decoration, are converted into nontoxic, harmless and scentless substances; and meanwhile, the invention also performs the functions of sterilization to the pathogenic bacteria and the secreta thereof and realizes the targets of thoroughly improving air quality and protecting the health of people.

The invention sets up a novel technique for treating sewage of an aeration biofilter having the function of reinforced deodorization. The technique combines sewage treatment and deodorization treatment, under the prerequisite of up-to-standard discharge, and adopts a composite filler to replace the ceramsite filler of the aeration biofilter; after domestication, the aeration biofilter can have thefunction of bio-deodorization while treating sewage. The technique is implemented by filling the composite filler which is composed of ceramsite, coarse granule active carbon and iron scrap with thevolume ratio being 1:0.2:0.15 into the aeration biofilter; adopting reek to be treated to replace air to be as the aeration gas source of the aeration biofilter; and after domestication, generating high efficient deodorizing bacteria groups such as desulfurated and deaminized bacteria and the like, so as to realize treating sewage and deodorizing stink gas simultaneously in the aeration biofilter.The invention does not change the equipment parameters of the original sewage treatment system and is favorable for upgrading and modifying civil sewage and industrial sewage plants.

A process for treating the offensive smell in petrochemical sewage treating plant and cleaning the low-concentration waste organic gas features use of immobilized microbial membrane as filler and 1-3 stages of microbial treatment. It includes such steps as wet dusting for pre-treating, microbial treating and post-treating by absorbent.

The invention relates to a purification processing method of the discharge gas of an acid waste water tank, belongs to waste gas purification treatment technology. The invention makes the discharge gas of the acid waste water tank process two-stage purification treatment: the first stage purification treatment uses segregation liquid in the process of rich ammonia segregation in the acid waste water stripping process or stripping purified water as absorption liquid; the purification treatment in the second stage uses property stable and high boiling point solvent oil and so on as absorbent. The invention organically combines the acid waste water stripping process with the purification treatment process of the acid waste water tank discharge gas, which not only can remove the odorous substances in the acid waste water tank discharge gas, but also can effectively reclaim hydrocarbon substances. The invention has simple devices and low operation cost, and has no potential safety hazard.

A dog biscuit is disclosed for controlling malodorous breath in dogs. The dog biscuit includes about 8-12 parts by weight whole wheat flour, about 4-6 parts oat bran, about 2-3 parts non-fat dry milk, and about 2-3 parts brown rice flour. The dog biscuit also includes water, vanilla extract, parsley, alfalfa powder, vegetable oil, peppermint extract, tarragon, peppermint leaf powder, and spearmint leaf powder. The vegetable oil includes an antioxidant and is preferably sunflower oil. The parsley is preferably fresh parsley, and the ratio of parsley to whole wheat flour is about 1:4 by weight. The dog biscuit is readily eaten by dogs and effectively neutralizes malodorous breath in them. Also part of the invention is a method of making the dog biscuit.

The invention provides a completely innocent and utmost resource treatment method for old garbage, which comprises the following steps that: a wood-plastic man-made board is produced after pretreatments such as disinfection, sterilization, screening and air separation of waste bamboo wood and plastics; and septic soil and concentrated waste liquid are prepared into a main raw material of high-quality organic fertilizer. The method used to treat the old garbage has the advantages that: 1. the method eliminates foul odor, foreign odor, and pollution to the environment which are produced by the prior treatment of the old garbage, and avoids the problems of greenhouse pollution and heavy metal pollution as well as flammability and explosibility due to produced inflammable gas when the old garbage is added with fresh organic matters and is prepared into compost through secondary fermentation; 2. the method avoids the atmospheric pollution produced by incineration treatment, particularly dioxin pollution; 3. the method can reclaim and reuse useful substances in the old garbage to the utmost extent, and produces good social benefit, economic benefit and ecological environment benefit.

An oral care composition and method of using are provided for treating and preventing malodors or disease conditions of the oral cavity in warm-blooded animals, including humans. When applying an oral care effective amount of the oral care composition of the present invention to the mucosal tissue of the oral cavity, the gingival tissues of the oral cavity, and/or surface of the teeth. The application can be as a liquid for bathing, rinsing or gargling, or lather generated by brushing the teeth for a sufficient time. After rinsing, gargling or brushing, the composition of the present invention should be swallowed to achieve effective reduction of various organisms, diseases and malodors. An oral care effective amount can also prevent and heal mouth sores and canker sores.

The invention relates to the technical field of function microbiological screening, and particularly provides bacillus subtilis ZNX3 with a deodorizing function. The preservation number of bacillus subtilis ZNX3 is CCTCC NO: M2014649; on the one hand, the bacterial strain can effectively reduce the amount of release of foul gases such as ammonia gas and hydrogen sulfide in manure of livestock and poultry, reduces the generation of the foul gases based on the source, and achieves a remarkable effect as the ammonia gas concentration released by the chicken manure on the fifth day is only 6.7% of a control group; on the other hand, the bacterial strain can quickly degrade ammonia gas and hydrogen sulfide in a henhouse, 10 minutes after spraying, the ammonia gas concentration in the henhouse is reduced by 95.7%, and the hydrogen sulfide concentration is reduced by 94.7%. In addition, the bacillus subtilis ZNX3 can effectively reduce the amount of release of foul gases in household garbage and sewage, the removal rates of ammonia gas, hydrogen sulfide and total hydrocarbon are all higher than 95%, and an unexpected technical effect is achieved.

The invention discloses a method for flue gas denitrification by an organic waste gas. The method comprises: introducing an organic waste gas and an oxygen-containing gas into an NOx flue gas to obtain a mixed waste gas, heating the mixed waste gas to a temperature of 100-500DEG C, then making the mixed waste gas enter a waste gas purification reactor, under the action of a flue gas denitrification catalyst, reducing the NOx in the flue gas into N2 by organic hydrocarbon in the waste gas, and simultaneously oxidizing hydrocarbon into CO2 and H2O, subjecting the denitrified flue gas to energy recovery and discharging it completely. The method disclosed in the invention utilizes the organic waste gas as a reducing agent for catalytic reduction of the NOx in the flue gas, and integrates flue gas denitrification and odor pollution control. With the characteristics of safe operation and less one-time investment, the method is especially suitable for enterprises having organic waste gas sources and NOx-containing flue gas at the same time.