3029results about How to "Increase contact time" patented technology

The present invention relates to a preparation method of biological affinity hydrophilic active magnetic seed filling material for treating water. It is characterized by that said method includes the following steps: mixing biological affinity substance, hydrophilic substance, magnetic powder and active carbon or magnetic powder and calcium carbonate in the high-molecular base material, and adding dispersion lubricating agent, uniformly stirring them, placing them into injection moulding machine, utilizing filling mould to make extrusion moulding and magnetizing, so as to obtain the invented filling material. It has biological affinity and hydrophilicity, at the same time can induce microbial activity and enzyme activity, and can raise oxygen utilization rate in water and water treatment efficiency.

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.

In some embodiments, a method may include separating contaminants from impaired water. The method may include contacting impaired water with a peracetate oxidant solution. The method may include mixing said impaired water with the peracetate oxidant solution. The method may include separating the impaired water oxidant solution mixture into solids and a water phase. In some embodiments, the peracetate oxidant solution may include peracetate anions and a peracid. The peracetate oxidant solution may have a pH from about 10 to about pH 12. The peracetate oxidant solution may have a molar ratio of peracetate anions to peracid ranging from about 60:1 to about 6000:1. In some embodiments, a peracetate anion to hydrogen peroxide molar ratio is greater than about 16:1. In some embodiments, a reactive coagulant, a softener, and/or a floc aid may be added to the impaired water.

The invention relates to a preparation method for a zinc-iron-selenium-rich biological fertilizer and a usage, which belongs to the technical field of crop production. Water is added into pig manure, silkworm excrement, human excrement and colza cakes for a fermentation to get mother liquor of the biological fertilizer; zinc sulfate, green copperas, sodium selenite are added into the mother liquor for reactions to get zinc-iron-selenium-rich biological foliar fertilizer for the rice. The fertilizer is separately sprayed in the booting stage and the full heading stage of the rice, with an amount of 1000ml per mu. The function rice, with zinc content 19.4 to 28.7mg/kg, iron content 7.0 to 20.2mg/kg, and selenium content 0.08 to 0.15 mg/kg, measures up to the limit standards of zinc, iron, and selenium in the national food standards. Organic selenium accounts for more than 99% of the total selenium in the zinc-iron-selenium-rich function nutritive rice. The preparation method for the zinc-iron-selenium-rich biological fertilizer proves effective, economical, safe and non-polluted through twice foliage sprays with zinc-iron-selenium fertilizer for the rice as an experiment.

Disclosed herein are a washing machine and a control method of the same that is capable of maximizing a contact time between water and laundry, thereby improving the rinsing efficiency while using a small amount of water. The washing machine includes a water tub, a rotary drum mounted in the water tub to receive laundry, and a circulation unit to supply water from the water tub into the rotary drum. The control method includes detecting an amount of load according to a weight of the laundry, supplying an amount of water set according to the detected amount of load into the water tub, and supplying the water in the water tub to the laundry by alternately operating the rotary drum and the circulation unit.

A process for recovering sulfur and preparing H2 from the hydrogen sulfide at same time is characterized by that an internal circulation absorption type reactor and an electrolyzing reactor with dual electrode plates are simultaneously used for the oxidizing absorption reaction and electrolytic regeneration reaction.

The invention is concerned with a kind of high efficiency water treatment equipment and technology belonging to water treatment field. The middle parts of the equipment are two flocculating rooms having mesh setting with disturbing flow, and the bottom of the flocculating room is precipitation tank. The suspending layer of active mud residue is out of the flocculating room and there is slanting pipe on top of it and concentrate room under it. The pipe excluding residue sets in the suspending layer of active mud residue, and the bottom of clean tank is filler to exclude residue, and there is siphon pipe connecting with the filler. There are grooves excluding residue at top of the flocculating room connecting with the pipe excluding residue and the siphon pipe connects with the residue reuse tank. The filler to exclude residue connects with a pump of reused residue. The equipment gathers the small air flotation, flocculating, active mud residue layer flocculating, and reused technology. Compared with traditional mixed and coagulate deposition technology, it saves 40 percent of field, reduces 10 percent of drug and enhances 15 percent disposal efficiency.

The invention relates to a circulating tumor cell detection chip and an application thereof. The above micro-fluidic chip is combined with deterministic lateral displacement and specific bio-affinity identification principles to realize synergistic high-efficiency and high-purity capturing and detection of circulating tumor cells in peripheral blood. A triangular microcolumn array modified with affinity identification molecules, such as a nucleic acid aptamer or antibody, and having a specific geometric arranging shape, is designed in the micro-chip. The rotating angle, the distance, the offset angle and other parameters of triangular arrays are regulated to control the flow behaviors of different dimensions going through micro-channels. The chip can realize three functions in order to improve the capture efficiency and the purity of the circulating tumor cells. A gas-driven sample introduction system is also designed in the invention, and can realize simultaneous control of a plurality of fluid paths through one gas pressure path.

The invention discloses a method for increasing utilization rate of ozone jointly processing waste water with a biological aerated filter, which comprises the following steps: a dissolvent air pump communicated with water is inhaled with ozone; under the pressurization of the dissolvent air pump, the ozone is dissolved in water; an air-release device decompresses and releases water dissolved with ozone to an ozone reactor so that the ozone forms micro-bubbles which fully contact with waste water entering into the ozone reactor, thus oxidizing and processing organic matter in waste water; the waste water enters into an attenuation pool after being oxidized and processed by the ozone reactor; the water coming out of the attenuation pool reenters the biological aerated filter for biology treatment and then is discharged; an automatic monitoring and controlling device is used for monitoring ozone remnant concentration in yielding water oxidized and processed by the ozone reactor in real time and automatically adjusts the ozone output quantity of the ozone reactor. The ozone addition quantity is adopted for automatically regulation control in real time, thus avoiding that the ozone quantity generated in the ozone reactor is less than the ozone quantity required by water treatment and the occurrence of waste as the ozone quality is larger than the required ozone amount; therefore, the utilization rate of the ozone is increased by 20-45%.

The invention relates to a PACT (powdered activated carbon treatment) process and an PACT process device. The activated carbon-microbial zoogloea culture method comprises the following steps: selecting activated sludge, and culturing until the activated sludge is mature; and adding powdered activated carbon to ensure that the powdered activated carbon serving as a core is wrapped by microorganisms to form activated carbon-microbial zoogloea floccules, and acclimating, thus increasing the specific gravity of the powdered activated carbon and enhancing the precipitability. In the PACT process device, a sludge return tank is added, and the powdered activated carbon is added into the sludge return tank, so that the powdered activated carbon and the microorganisms can form activated carbon-microbial zoogloeae in the sludge return tank, thereby prolonging the retention time of the powdered activated carbon in a water treatment system; and sludge in the sludge return tank is lifted into a sewage inlet at the front end of an aerobic tank through a lifting pump, so that the sludge and sewage can be better mixed, thereby prolonging the retention time of the powdered activated carbon in the aerobic tank and enhancing the treatment effect. On the basis of prolonging the water retention time of the aerobic tank, the invention does not need to increase the volume of the original aerobic tank, and is small in occupied area and easy to implement.

A pseudo-plastic or thixotropic carrier having anti-malodorous components dissolved or suspended therein is sprayed on the internal surfaces of an ostomy bag or pouch. The viscoelastic properties of the carrier allow the composition to be conveniently dispensed from a spray bottle into the ostomy bag and retained on the inner walls thereof without being displaced therefrom by incoming waste during use of the ostomy bag. This allows the composition to continue to deodorize the ostomy bag headspace even after waste material begins to fill the bag.

The invention relates to an active composite suspended filler, which is applied to the technology of biochemical treatment of organic wastewater, and discloses a porous support filler formed by a carrier basic materials and functional assistant materials. The porous support filler is in a through-hole spheroidal body or a through-hole cylindrical body, and one layer of porous active powder material layer is bonded on an outer surface of the through-hole spheroidal body or the through-hole cylindrical body. The active composite suspended filler is an inorganic suspended filler, has an uneven surface and roughness height; and pores with different sizes are distributed on the filler and are shaped like a honeycomb. The filler not only has high adsorption performance on harmful substances and dissolved oxygen, but also can form different dissolving intensity, is beneficial to improving processing efficiency for removing COD (Chemical Oxygen Demand) and ammonia nitrogen, and will be a novel high-efficient filler.

The invention discloses a microbial fuel cell artificial wetland device for sewage treatment and power supply to wetland. The device comprises a microbial fuel cell wetland main body and a current collection and energy storage system, wherein the microbial fuel cell wetland main body sequentially comprises a seepage-prevention layer, an anode packing layer, an insulation packing layer, a cathode packing layer and aquatic plants from bottom to top; an aeration device of which the aeration quantity can be adjusted is laid at the bottom of the cathode packing layer; and the current collection and energy storage system comprises an anode electrode, a cathode electrode, an external connection wire for connecting the anode electrode with the cathode electrode, and an energy storage device and an electric energy output device which are connected in series by the external connection wire. The device integrates functions of high-efficient sewage treatment and energy generation, is low in cost, and is easy to maintain, externally applied voltage is unnecessary during the whole process, the generated electric energy can be applied to the system according to demands, and thus, sewage treatment and high-efficient cyclic utilization of resources are achieved. The device is particularly suitable for urban wetland parks.

The invention belongs to the field of sewage ecological treatment, and the purpose is to provide a device and a method for sewage decentralized treatment in circulating vertical flow constructed wetlands. The invention comprises the following aspects: 1) the high-efficient circulating vertical flow constructed wetland system comprises three main components of a vertical flow constructed wetland, a circulating water tank, and a reinforced adsorption column; 2) the operation modes comprise an intermittent mode and a continuous mode. Fillers of the constructed wetland are proportional compositions of several fillers which are low in price and high in adsorption capacities for nitrogen and phosphorus; plants which have strong durability against pollution and have landscape value (thalia dealbata or day lily) or economic value (hybrid pennisetum) are planted on the wetland surface. The invention adopts the high-efficient filler composition to reinforce nitrogen and phosphorus adsorption; effluent backflow increases the dissolved oxygen inside the vertical flow constructed wetland, and enhances the nitration capability of microbes in the wetland; the denitrification capability is enhanced; the contact time of sewage and the fillers is increased; and the removal of phosphorus is enhanced. Series-parallel combinations can be selected flexibly with respect to different sewage types, and the applicability is strong.

The invention discloses a double-rotation SCR denitration method and an apparatus thereof. According to the invention, a first eddy flow catalytic reaction chamber and a second eddy flow catalytic reaction chamber are arranged along a denitrating tower body; a flue gas introduction pipeline is arranged on a sidewall of the denitrating tower body; several eddy flow atomizing nozzles are respectively arranged on inner periphery of the flue gas introduction pipeline and the inner periphery at top of the first eddy flow catalytic reaction chamber; when flue gas is introduced into the flue gas introduction pipeline, the flue gas and ammonia gas injected by the eddy flow atomizing nozzle are mixed, and a mixture enables spiral sinking along circumference of the first eddy flow catalytic reaction chamber from up to down in a tangent circle mode, under effect of a cyclone, and then the mixture enable spiral rise along circumference of the second eddy flow catalytic reaction chamber from down to up in the tangent circle mode. Under prerequisite that high efficiency denitration is ensured, catalyst amount is less, operation of technical means is simple and easy, compared with the prior art, a denitrating tower structure is simple, cost of the apparatus is low, denitration efficiency is high, energy consumption is low, escapement ratio of ammonia is reduced, denitration cost is greatly reduced, and economic benefit is obviously increased.

The foot structure of four foot waling robot with floated foot support includes calf, subsidiary ball cover plate, knuckle, instep seat, upper washer, clamp plate, balls in holder, lower washer, sole seat, approach sensor, foot pad, feeling sensor, buffering pad, outer casing and pressing spring connected together. The present invention is light, firm and floatable, and has elastic compensation capacity and environment feeling capacity.

A minimally invasive method that allows for complete obliteration of the affected vessels without scarring or any of the other undesirable complications of conventional or foam sclerotherapy. More particularly, the present invention relates to a method for using a non-foaming thickener to reduce dilution and diffusion of the sclerosant in the blood vessel and enhance the efficacy of the sclerotherapy treatment. The thickener can be thickening agent, hydrogel, environmentally sensitive hydrogel, and self-assembly polymer, etc. After it is mixed with sclerosant and injected into the blood vessel through a needle or a catheter, the compound will replace blood and obliterate the affected vessels.