174results about How to "Avoid water pollution" patented technology

A portable cooler has at least three separate storage compartments that comprise at least one ice-cold storage compartment; at least one dry moderately cold storage compartment; and at least one dry non-cold storage compartment. A temperature gradient construction enables the user to proficiently store food and non-food items of varying water sensitivities and temperature needs. Typically, a wet cooling medium is added to the ice-cold storage compartment. Discrete thermal conduction pathways extend from the ice-cold storage compartment into the moderately cold storage compartment, cooling the moderately cold storage compartment. The less cold compartment and the non-cold compartment are completely dry of water. Each of the compartments has its own lid enabling selective entry and thereby preventing temperature fluctuations and moister transfer when another compartment is accessed. The portable cooler has a plurality of foldable wheels on the base thereof to facilitate portability.

A system designed to increase diver safety in high-risk environments containing one or more hazardous materials. The system comprises one or more retrofittable kits enabling the upgrading of contaminate-vulnerable materials of an existing dive helmet to provide full environment isolation for the diver. The system preferably utilizes fluoroelastomeric replacement materials and components to convert an open circuit dive system to a closed circuit dive system. Methods of system development are also disclosed.

A vehicle includes a vehicle frame and an optical device mounted on the vehicle frame. A first temperature sensor senses ambient air temperature surrounding the vehicle frame, a second temperature sensor senses a temperature of a lens of the optical device, and a humidity sensor senses moisture content of air proximal to the lens. An exhaust directs gas at the lens in response to the sensed ambient air temperature, the sensed lens temperature, and the sensed moisture content.

A waterfowl decoy anchor for anchoring a floating decoy in a lake or stream for attracting waterfowl to a hunting site or blind. The anchor is typically tied to an eyehole in the lengthwise keel of a decoy by means of a connecting cord having a desired length. The anchor includes an elastic cord segment of latex connected at one end to a “D”-ring for attachment of the connecting cord and, at the other end, to an anchor ball of lead or iron. The other end is threaded through the anchor ball and knotted at the end, the knot being drawn back into a knot cavity within the ball. A cap covers the knot cavity and the ball is sealed up to the tubing with vinyl plastic or rubber, avoiding water pollution and corrosion of the ball. The connecting cord and anchor is wound around the keel for storage.

A drum-type washing machine employs a gasket water draining hose to enable used water to be discharged via the drainpipe, immediately following a washing or rinsing step. The drum-type washing machine includes a cabinet having a door; a tub for containing water, the tub having an entrance corresponding to the door of the cabinet; a gasket, connecting the door of the cabinet to the entrance of the tub, to prevent water contained in the tub from leaking outside the tub, the gasket having a first orifice provided at a bottom point thereof; a drainpipe, communicating with the tub, to discharge water contained in the tub, the drainpipe having a second orifice provided at one side thereof; and a water draining hose, communicating the first orifice with the second orifice, to discharge water via the drainpipe.

The invention relates to a degradable liquid mulching film and a production method thereof, particularly to an environment-friendly degradable liquid mulching film with straws as a basic raw material and a production method thereof. The degradable liquid mulching film is prepared from steaming slurry of crop straws (such as wheat straws, rice straws, cotton straws, wood shavings, and the like) or straws paper-making black liquor as a main raw material by a series of reactions, such as sulfonation, crosslinking and copolymerization, of macromolecules in the slurry or the black liquor, such as lignin, cellulose and polysaccharides, under the action of a film formation additive. The macromolecules in the degradable liquid mulching film have a large amount of hydrophilic groups which can effectively catch the water molecules evaporated and diffused from soil to the air, so as to prevent water evaporation and heat loss arising therefrom, thereby increasing the temperature and preserving soil moisture. The degradable liquid mulching film is helpful for increasing crop yield and improving crop quality; and the yield is higher than that by use of a plastic mulching film, and the per mu yield is increased by more than 5%. The degradable liquid mulching film can replace the conventionally used plastic mulching film.

A litter screen to be installed below a drain grating placed in a drain hole so that litter, such as cigarette butts and plastic, is caught by the litter screen, thus preventing water pollution. The litter screen of the present invention includes a main body, which has a plurality of water passing holes therein, a mounting support, which extends from the main body so that the main body is installed below a drain grating using the mounting support, and a handle, which is provided in part of the mounting support to allow a user to hold the handle and pull out the main body. The litter screen may further include an opening, which is formed in at least one surface of the main body to drain water without backflowing. Furthermore, at least one surface of the main body may be inclined.

A process and apparatus for industrial-scale preparation of an emulsified fuel including a water phase in a continuous organic phase which contains less than 20% by volume of water, and at least one additive necessary for forming the emulsified fuel. The fuel is formed by mixing and homogenizing the organic phase and the additives, forming a volume V, inside an homogenization tank with internal circulation rate Qc, such that Qc/V>=100 h-1, circulating the homogenized fluid in a branch loop emerging from the tank at a rate Qcirc, and through at least one emulsifying system located on said loop, at a rate such that 0 h<V/Qcirc<=2 h, feeding the aqueous phase into the branch loop upstream of the emulsifying system, and maintaining the homogenization in the tank and the circulation of the liquid in the branch loop until the emulsion acquires a desired characteristic of storage stability.

A coaxial light-guide system includes a coaxial light-guide optical fiber which is fabricated by having refractive index profile set on radii. Thus the coaxial circular outer-cladding and the axial inter-cladding have the same refractive index. The light guide refractive index profile center is moved from the axis to the entire radii of the optical fiber. Light propagates between the axial inter-cladding and the coaxial circular outer-cladding. Such a new positioning prevents center-dip in the refractive index profile that occurs to the prior optical fiber after fabrication is finished. The coaxial single-mode optical fiber of the invention has a greater optical flux than the prior optical fiber, and can increase communication distance. Coupled with a coaxial light source and photodiode of the invention that have an coaxial inner and outer conductors to supply electric power and a plurality of annular semiconductor layers interposed therebetween, energy waste caused by prior edge-emitting elliptic light source injecting in a circular core can be eliminated.

The invention provides a runoff water purification system for removing pollutants which accumulate on road surfaces, thereby reducing the workload of the sewage water treatment plants and preventing environmental water pollution. The system 1 is installed under the ground of the side of the road 2. Runoff water runs into the system 1 through a curb inlet 120, is purified and discharged to a sewage pipe 56. The system is made up of a concrete box 11, in which a wall 10 separates the box into a maintenance tank 7 and a treatment tank 9, both of which are connected to each other at their lowest ends. Runoff water flows into the maintenance tank 7 and to the treatment tank 9, through the connecting conduit where pollutants are removed, and discharged to the sewage pipe.

The present invention provides the compositions and processing methods of an environmental-friendly, multiple-effect powder. The compositions of environmental-friendly, multiple-effect powder include: cement, discarded PCB powder, resin, wasted coating powder and volcano mud powder. The environmental-friendly, multiple-effect powder of the present invention can also be widely applied to civil works as a coating/filling material or other composite building materials due to its advantages such as good thermal insulation, noise absorption, water-proofing, resistance to mildew, rustiness and acid/alkali, excellent robustness and moisture retention with better industrial and economic benefits.

The invention relates to a healthy and environmentally-friendly raw fish puffed mixed feed and a production technology thereof, and belongs to the technical field of aquatic product culture feeds. The feed comprises fish meal, chicken meal, meat and bone meal, shrimp meal, soybean protein concentrate, soybean meal, peanut meal, flour, soybean oil, fish oil, soyabean lecithin oil, fish soluble, yeast extract, beer yeast powder, calcium dihydrogen phosphate, a composite trace element premix, a composite vitamin premix, choline chloride, coated lysine, coated methionine, coated sodium butyrate and carnitine hydrochloride. The h puffed mixed feed can reduce the discharge amount of nitrogen in water and reduce water pollution; and the puffed mixed feed also can promote the healthy and rapid growth of raw fish, reduce the organ-to-body weight ratio and maintain natural body shape, and facilitates healthy and sustainable development of the raw fish breeding industry.

The present invention provides a method for removing phosphorus and nitrogen contained in sewage or wastewater using iron ore wastewater. According to the method of the present invention, in which the phosphorus and nitrogen contained in sewage or wastewater are crystallized in the form of struvite using iron ore wastewater containing a large amount of Mg²⁺ produced in a process of upgrading low-grade iron ore and removed, it is possible to reduce the cost of Mg²⁺ and the cost of iron ore wastewater treatment, thereby earning economic profits. Moreover, it is possible to prevent water pollution by the removal of the phosphorus and nitrogen contained in sewage or wastewater. Furthermore, it is possible to use struvite crystals obtained as a by-product as a time-release compound fertilizer so as to reduce the amount of fertilizer used and the number of fertilizations, thereby reducing soil contamination.

An improved hot-cold inlet pipe structure includes an external-threaded pipe and an internal pipe forming an integrated piping structure. The internal pipe extends outwardly a wrapping section that covers a plurality of threaded openings of the external pipe. The internal pipe is composed of non-toxic materials that include plastic materials that are high resistance to pressure and climate change. The internal pipe also reduces the use of metallic materials and does not release of toxic chemical to water stream. A depressed section of the interior of a top of end of the inlet pipe includes a receiving chamber, the receiving chamber includes an opening that includes numerous slots. The slots receive a control valve unit such that the slots mesh with the control valve unit. This design is also beneficial in the manufacturing of the inlet pipe.

The invention discloses a preparation method of an Au-Pd/TiO2 NBs photocatalyst, which comprises the following steps: with a titanium sheet as a matrix, performing anodic oxidation treatment on the titanium sheet to prepare TiO2NBs; before anodic oxidation, performing ultrasonic cleaning of the titanium sheet in ethanol and acetone respectively, performing acid pickling, washing with deionized water and drying, wherein a two-electrode system is adopted for the anodic oxidation; calcining in air; modifying the TiO2NBs prepared in the step I with Au-Pd bimetallic nanoparticles; adopting a three-electrode system in which chloroauric acid and a palladium chloride aqueous solution are used as Au and Pd sources; and depositing Au and Pd in turn and drying. The photocatalyst prepared by the method disclosed by the invention is fixed on the titanium matrix, the water body pollution caused by non-thorough recovery is avoided, a contactable surface area is larger, the contact reaction between organic pollutant molecules and the photocatalyst is facilitated, the photocatalytic degradation property of the photocatalyst is remarkably promoted, reaction conditions are mild, and the process flow is simple and easy to control.

The invention discloses a squid living body transportation method which comprises the steps of: (1) starvation, namely, starving a selected adult squid to lead the squid to emptying feces; (2) stimulation for ink jetting, namely, stimulating the squid to jet ink, then putting the squid in a special ink-control chute, and stimulating the squid to jet ink again and separating the jetted ink from the squid; and (3) gas control cooling, namely, putting the squid in an independent plastic packaging bag, charging storage and transportation gas which can reduce vigor of the squid, and then transporting the squid living body after low-salinity-gradient cooling. The invention also provides the special ink control chute used in squid living body transportation. The special ink control chute is provided with a chute body with U-shaped section; two ends of the chute body are open; the bottom surface of the chute body is provided with a drainage structure; and at least one baffle plate which can reduce the sliding speed of the squid is transversely arranged in the chute body. Therefore, the squid living body transportation method and the special ink control chute have little damage to squids, can ease deterioration of transportation water body, have longer transportation period of living body and longer distance, and have convenient implementation.

A process for the treatment of sewage water to contaminant free water is done by two steps of basification or acidification followed by neutralization. Basification occurs by adding basic chemicals to sewage water up to 12 P^H followed by adding acidic chemicals up to 7 P^H for neutralization. Similarly acidification occurs by adding acidic chemicals up to 4 P^H followed by adding basic chemicals up to 7 P^H. The sludge formed during basification and acidification is separated from two steps of treated sewage water. For better results basification is extended up to acidification P^H followed by adding of acidic chemicals up to 7 P^H, similarly acidification is extended up to basification followed by adding of basic chemicals up to 7 P^H. Gases generated in the whole process can be absorbed by ferrous chloride and/or calcium chloride added to the acidification and basification reactions.

This invention concerns the transport of fluids. In particular in a first aspect it concerns a truck fitted with a tank and a fill line to the tank, comprising: An inlet in the fill line configured for connection to a hose that is, in use, connected to a fluid source to change the amount of fluid in the tank. A sensor to make measurements from which the amount of fluid in the tank can be determined. A valve to allow fluid flow through the inlet, both to increase and decrease the amount of fluid in the tank. And a data acquisition device to periodically record sensor measurements and to associate a time and place with each record. In a second aspect the invention concerns a control system for the truck. In a third aspect the invention concerns a control system for a fleet of trucks.

The invention provides a high-temperature and low-temperature gas-phase composite desulfurization and denitration method. The high-temperature and low-temperature gas-phase composite desulfurization and denitration method comprises the following steps: a) introducing flue gas; b) uniformly distributing the flue gas; c) carrying out flue gas turbulence; enabling the flue gas to penetrate through awater layer concentrated at the bottom of a catalytic contactor to realize sufficient contact between the water layer and a spraying solution; d) carrying out desulfurization and denitration treatment, wherein the spraying solution is a water solution containing NaClO and NaOH; e) removing nitric acid and nitrite in water and mixing the water with an ammonium chloride solution. The desulfurizationand denitration method provided by the invention comprises the following steps: firstly, absorbing NO, SO2 and less NO2 in the flue gas by utilizing the water solution containing the NaClO and the NaOH; then transforming the nitric acid and nitrite ions in the water into nitrogen gas through the ammonium chloride solution to be released. According to the high-temperature and low-temperature gas-phase composite desulfurization and denitration method, very good desulfurization and denitration effects can be realized under a high-temperature or low-temperature condition; the desulfurization anddenitration efficiency can reach 95 percent or more; the method has remarkable beneficial effects and is suitable for being popularized and applied.