995 results about "Treatments water" patented technology

The present invention is directed to a biocidal water treatment composition, water treatment apparatus, and method of treating water to reduce levels of pathogens. The composition contains sources of copper, zinc, and silver metal ions within a crosslinked polymer matrix. Examples of these ion sources include copper sulfate, zinc sulfate, and silver nitrate. An example of the crosslinked polymer matrix is crosslinked chitosan, which also serves to clarify the water and release the metal ions over time. The product is easy to manufacture, and allows the use of decreased halogen sanitizer, as well as decreased copper ion, thereby decreasing the likelihood of staining. The product simultaneously provides good bactericidal and algaecidal properties, despite low levels of copper ion and low chlorine levels.

This is a method of water and wastewater treatment for removal of pollutants in at least two-step process comprising (a) treatment of water producing at least partially treated intermediate effluent, (b) treatment of the intermediate effluent with a sacrificial metal and producing ions of said sacrificial metal, and providing very thoroughly treated effluent, (c) recuperating sacrificial metal ions generated in the step (b) and recycling the recuperated ions in the step (a), the recuperated and recycled ions from the step (c) improve treatment efficiency of step (a) by additionally removing pollutants from the intermediate effluent using recuperated ions, resulting in cleaner intermediate effluent, and, therefore, the pollutant loading rate in step (b) is reduced, intermediate effluent is further treated more thoroughly, and the demand for the sacrificial metal in step (b) is reduced. Step (a) can preferably be a biological, biological-abiotic, physical chemical, or combination of these steps. Step (b) is preferably a spontaneous cementation-driven electrochemical process. The combination of said steps (a), (b) and (c) produces a synergistic effect resulting in improved removal of said pollutants and in reduced need in said sacrificial metal. For example, a drinking quality water can be very economically and reliably obtained from wastewater. In addition to the superb treatment efficiency and reduced reagent requirements, the waste sludge from the system is beneficially disposed in-sewers, in sanitary landfills or on land.

A portable water treatment system includes at least one sub-system to treat water including a flocculation system, a chlorination system, and a bio-sand filter system. The water treatment system may include multiple sub-systems for treating water that feed into one another. The sand filter system may include a mini bio-sand filter, a foam filter, or a pressed block filter. The flocculation system may include a tank bottom that urges settling particles toward a sump and a ladle that removes settled particles. A manual pump or siphon may be included in the water treatment system.

An apparatus performs radical treatment by electric discharge. The radical treatment apparatus includes an electrode unit having a gas flow path that blows gas onto treatment water and an electrode member that generates the electric discharge at a leading edge in order to generate a radical from the gas.

A system delivers water with at least a threshold concentration of ozone to an exit point. Ozone is injected into water flowing into a tank. The ozone concentration in the tank is monitored by a first sensor. Once the water in the tank has at least the threshold concentration of ozone, the water may be pumped to an exit point. A second sensor in proximity to the exit point monitors the ozone concentration of the treated water in proximity to the exit point. If the water in proximity to the exit point has at least the threshold concentration of ozone, the system allows a portion of the treated water to exit the system to a point of use. The second sensor in proximity to the exit point assures the treated water that is actually delivered to the exit point has at least the threshold value of ozone concentration.

The invention discloses a coking wastewater deep treatment and reuse process and equipment thereof, belonging to the technical field of environmental protection, and the main steps are as follows: dosing a coagulant in biochemical treatment water, then leading the biochemical treatment water to enter into a sedimentation tank, discharging sludge from a sludge hopper, leading treated water to enter into a three-dimensional electrode reactor, leading the outlet water after electro-oxidation treatment to enter into a biological filter tank, and leading the water after the treatment of the biological filter tank to enter into a follow-up ultrafiltration treatment; the ultrafiltration outlet water has two selections, one is to reuse the outlet water as the process water directly, the other one is to continuously pass through a reverse osmosis membrane system for treatment; and the coagulation and sedimentation tank, the process equipment of the three-dimensional electrode reactor, the biological filter tank, the ultrafiltration system and the reverse osmosis desalination system are adopted during the treatment process, thereby achieving the purposes of removing residual refractory organic matters, suspended impurities and salt in the waste water, reusing the outlet water, simultaneously leading the content of the organic matters in the reverse osmosis concentrated water not to exceed the national environmental protection standard, also reusing the concentrated water in occasions with less stringent requirements on the water quality and achieving the purpose of zero emission of the wastewater.

The invention relates the microorganism agent used to control oil field sulfate-reducing bacteria and its application. The invention can used to control oil field secondary depletion sulfate-reducing bacteria and microorganism. The water outlet system of secondary depletion technology comprises sulfate-reducing bacteria, H2S and sulphide, which can cause corrosion and pollution of sulphide. Microorganism agent comprises denitrifying bacteria culture, nutrescin and synergic nutrescin. 0.01-1wt% denitrifying bacteria culture, 5-100g/L culture and 10-200ppm synergic nutrescin. Microorganism agent can avoid SRB growing, SRB producing H2S, and removing sulphide. At the same time, metabolite can improve recovery efficiency.

The invention discloses a formula and a preparation method suitable for preparing fracturing fluid from continental facies shale gas well fracturing flow-back fluid treatment water, belonging to the technical field of oilfield chemistry. The formula for preparing the fracturing fluid from the continental facies shale gas well fracturing flow-back fluid treatment water is provided aiming at the deficiencies existing in the prior art. The formula consists of base fluid and a cross-linking agent, wherein the cross-linking agent is an anti-temperature mineralization-degree-resistant cross-linking agent, and the formula comprises 0.4%-0.6% of cross-linking agent and the balance of base fluid; the base fluid consists of the following components in percentage by mass: 0.4%-0.45% percent of hydroxypropylguar gum, 0.3%-0.5% of gas well clean up additive, 1%-2% of stabilizer, 0.1%-0.15% of bactericide, 0.1%-0.2% of modifier, 0.03%-0.05% of antisludging agent, 0.6%-0.8% of gel breaker and the balance of the continental facies shale gas well fracturing flow-back fluid treatment water. The cyclic utilization of the continental facies shale gas well fracturing flow-back fluid treatment water is realized through the formula of the fracturing fluid, and the prepared fracturing fluid has good sand-carrying property.

The invention relates to a method for digesting grease through microwave pretreatment and an aqueous enzymatic method. The method includes soaking raw materials, performing microwave puffing treatment on camellia oleifera seed slurry, digesting grease with water, performing physical refining on the obtained grease after degumming through a phosphatidase enzymatic method, or directly performing rough filtration, refined filtration and nanofiltration, and then performing vacuum dehydration and drying to obtain grease products and a by-product of wet meal. According to the method, the microwave puffing treatment is adopted on raw materials such as camellia oleifera seeds, cell structures of the raw materials can be fully destroyed, and the oil yield of the following water immersion method can be improved; grease digestion through water after microwave pretreatment for materials belongs to an environment-friendly and safe production process; and the method has the advantages of being simple and environment-friendly in process, high in oil yield, low in investment and prone to industrial production.

The invention discloses a sewage treatment process and a special-purpose one-piece sewage treatment plant. The process comprises the following steps: 1) arrangement of a water inlet system: sewage input from an inlet pipe and pretreated by thick and fine gratings and a vortex-type grit chamber is sent into a biological reaction system; 2) arrangement of the biological reaction system: the biological reaction system is divided into an anoxic area, an anaerobic area, an aerobic area and a sedimentation area, and activated sludge in each area utilizes katabolism of microbes to converse organic matters into inorganic matters to realize nitrogen and phosphorus removal; 3) arrangement of the sedimentation basin: sludge and water in the treated sewage can be separated, so that the water outlet is clarified; and 4) arrangement of a disinfection tank: the treated water from the step 3) is disinfected to kill pathogenic organisms and then discharged through an outlet pipe. The invention also discloses a one-piece sewage treatment plant. The invention has the advantages of small land occupation, small investment, compact mechanism, low loss of a water head, low investment for the engineering project, optimized, stable and mature technology, good nitrogen and phosphorus removal effect and good organic pollutant removal effect.

The invention relates to a water disposal system, comprising a swirl rough filter which is communicated with the feeding water to be disposed, a water disposal device which is connected with the swirl rough filter, and a disposed water collecting box which is used for collecting the disposed water which is disposed by the water disposal device; wherein, the water disposal device comprises a radial swirl filter; the middle part of the shell of the mainbody of the radial swirl filter is communicated with a tangent water outlet, the upper part thereof is provided with a ring-shaped overflow device and a lower part thereof is provided with a conical medium supporting screen and filled by filter medium; the bottom of the overflow device is provided with a supporting frame and vanes which are obliquely arranged on the supporting frame; the supporting frame, the vanes and the radial swirl filter shell form the ring-shaped sleeve; water which is disposed by the radial swirl filter flows into the disposed water collecting box. The water disposal system leas more water to be circulated and reused, has simple structure, few part numbers, low cost, is easy for large-scale production, economical running, installation and operation. The invention also relates to a water disposal device used for the water disposal system.

The invention discloses a preparation method of a metal-organic framework material and its application, and belongs to the field of material preparation and water treatment technologies. According to the invention, Cr<3+> is used as metal ion, H2BDC is used as an organic ligand and hydrochloric acid is used as a mineralizer. A porous MIL-101 target material is prepared by a hydrothermal method. The preparation method has advantages of simple synthesis, easy operation, low cost of raw materials, high yield and stable chemical properties of an obtained function material. By using the material to process antibiotics in a water body, the purpose of antibiotics recovery and enrichment can be achieved, and migration of the antibiotics in nature can be inhibited. The material provided by the invention has high research value and application prospect.

The invention relates to the technical field of environmental protection and particularly relates to a porous material capable of removing total phosphorus in wastewater and a preparation method of the porous material. The porous material comprises porous material matrixes having controllable pore diameters, wherein each porous material matrix is prepared by mixing a mixture of metal oxides, an inorganic material and an organic material, milling, molding, drying and sintering processes. By the characteristics that the porous material has high selectivity and high adsorption efficiency to total phosphorus, good chemical stability, high mechanical strength, simplicity in application method and long service life and can be directly paved inside a filtration tank or filled inside a filtration tower column, the porous material can be widely used in industrial wastewater treatment, mining and smelting, electroplating, electronics production, dyeing and garment industry, and can also be used in urban sewage, rivers, lakes and other groundwater management, especially in deep treatment of wastewater containing low concentration of total phosphorus, so that the content of total phosphorus in the treated water can be reduced to 0.05mg/L which is superior to the Class IV water body standard requirements in the national 'Surface Water Environmental Quality Standard' (GB3838-2002).

The invention discloses an oil-absorption material and a preparation method thereof. The preparation method of the oil-absorption material includes the following steps: 1) dissolving polyactic acid into organic solvent capable of dissolving the polyactic acid so as to obtain polyactic acid solution; and 2) performing phase separation on the polyactic acid to obtain the oil-absorption material. According to experiments, the preparation method of the oil-absorption material is easy and requires no other chemical additives, synthetic materials are wide in source, the prepared oil-absorption material has good oil-absorption effect, and the materials are biodegradable, so that the problems of secondary pollution caused by treatment of burning, burying and the like are well solved. The oil-absorption material can be used for treating sewage containing oil, cleaning floating oil on water surface, purifying water bodies and the like, and is nontoxic and harmless and strong in applicability.

A process for treating sewage by A2N denitrifying to remove P includes pumping sewage in anaerobic pool, discharging the muddy water in medium deposition pool, discharging the supernatant in aerobic biomembrane mitrifying pool and the sludge in anoxic pool, discharging the water from said nitrifying pool to anoxic pool, discharging water from anoxic pool to high-speed aerating pool for absorbing residual P, pumping water in final deposition pool, draining the treated water, and pumping part of sludge back to anaerobic pool.

The invention discloses a low-emission solid organic waste treatment system realizing methane and active carbon production. The technical method of the low-emission solid organic waste treatment system realizing methane and active carbon production uses a waste crushing treatment system, an anaerobic digestion raw material pre-treatment and blending system, an anaerobic digestion reactor system, an anaerobic digestion residuum dehydrating system, an anaerobic digestion residuum carbonizing system, a carbonized gas collecting, heat-exchanging and purifying system, and a treatment water recycling system. The technical integration of the low-emission solid organic waste treatment system realizing methane and active carbon production is capable of finishing the optimal treatment of the biomass solid organic waste, and the final product is the clean energy methane and environment-friendly material active carbon. The partial required energy can be produced by the technical method, the energy recycling rate is high, and the treatment on the exhaust gas and effluent can be finished in the production link, the system is energy-saving and environment-friendly. By sufficiently considering the influence of various factors and the coherence among various links, the period of anaerobically treating the biomass organic solid waste can be obviously shortened, and the treatment efficiency of the organic solid waste can be sufficiently improved.

The invention discloses a method for treating eutrophicated water body by using microalgae, which comprises the following steps of: selecting microalgae capable of efficiently absorbing nitrogen and phosphorus as algae seeds, and performing domestication such as reducing the nitrogen and phosphorus content and adapting to the water body to be treated by regulating culture medium ingredients; and performing amplification culture step by step, introducing the algae seeds into a primary eutrophicated water body treatment tank, making the nitrogen and phosphorus flowing into the water body of theprimary treatment tank greatly absorbed by the microalgae, discharging into a secondary treatment tank for sedimentation and filtration, discharging most of the treated water, flowing back a little water to the primary treatment tank along with the microalgae, and recycling to fulfill the aim of improving the water quality finally. In the method, the defects of high technical investment, high cost, complex technology, secondary pollution and the like in the prior art are overcome. The COD of the eutrophicated water body treated by the method can be reduced by about 95 percent, the BOD can be reduced by about 93 percent, the total nitrogen can be reduced by about 97 percent, the total phosphorus can be reduced by about 97 percent, and the eutrophicated water body treated by the method completely meets the national type III water quality standard.

The modular waste water treatment system receives waste water from a waste water source containing organic waste and produces a treated water effluent. The modular system includes bioreactors and a bioreactor support module. The bioreactors receive a waste water mixture from the bioreactor support module and produce treated water substantially free of organic waste. The bioreactor support module is a transportable unit fabricated upon a frame adapted for transport by a truck upon a public roadway. The bioreactor support module includes items of equipment needed for conditioning waste water for intake by the bioreactors, items of equipment for receiving, processing and discharging treated water from the bioreactors and may include other items of equipment for receiving and processing other byproducts from the bioreactors. The transportable bioreactor support module is sized to support the operation of between one and preferably as many as six bioractors. Accordingly, the modular waste water treatment system can be fabricated off site in a controlled shop environment, transported to a site, placed at a site and even later expanded to include additional bioreactors for increased capacity with a minimum of cost, time and effort.

The invention relates to a microorganism bacterium agent for treating industrial wastewater pollution. The microorganism bacterium agent is prepared from pseudomonas putida, candida utilis, bacillus amyloliquefaciens, clostridium papyrosolvens, nitrosomonas europaea, paracoccus denitrificans and auxiliary materials. The microorganism bacterium agent has the advantages that various bacteria in mutualistic symbiosis are compatible reasonably without antagonism and are effective in degradation of phenyl amines degradation-resistant compounds when being thrown into a wastewater treatment system, thereby being suitable for industrial wastewater treatment and being capable of increasing treatment water quantity, improving treatment water quality, reducing operational cost and promoting up-to-standard discharge.

The present invention discloses a grouper factory culturing method comprising the following steps: (1) Treatment water for culture: disinfecting and sterilizing culturation water by ozone and ultraviolet radiation, then filtering and detecting and controlling water quality; (2) Selection fry: selecting 12 to 15cm grouper fry without nervous necrosis virus; (3) Culturation for grouper: To discharge culturation water qualified by detected into culture pond, to stock the selected fry into pond, to control the content of dissolved oxygen, ammonia nitrogen, nitrite and bacterial in pond, and to control culture density and PH of culture water, to feed everyday; (4) During culturing procession to recycle treatment culture water, that is to separate protein for culture water, after disinfecting and sterilizing by ozone and ultraviolet radiation to process biological nitrification, and then filtering so as to renew culture water; (5) Pollution absorption, washing pond bottom and changing water each day, keeping pond wall and pond bottom cleaning. This method has high efficiency and environment protecting, using this method to produce grouper having good quality, high yield, health and high survival rate, lower feed coefficient.

An underwater ultrasonic thawing apparatus includes a thawing treatment tank where thawing treatment water; an underwater ultrasonic vibrator configured to be fixed to an inner face of the thawing treatment tank and to emit ultrasound; a temperature sensor configured to detect a temperature of the thawing treatment tank; a temperature adjuster configured to adjust the thawing treatment water to a predetermined temperature; a controller configured to control the underwater ultrasonic vibrator; and a separation and hold means configured to separate and hold a stuff to be thawed which is thrown in the thawing treatment tank and the underwater ultrasonic vibrator.

A process for treating P-contained sewage featurs that the iron salt is used as its flocculant and the quaternary ammonium salt and tannic acid are used as its co-flocculant for removing P compounds frmo water and decreasing the turbility of water and the content of iron in water. The appliction of said process in recovering P from sewage is also disclosed.

To provide a membrane separation method capable of attaining reduced adsorption of a membrane-fouling substance contained in treatment water onto the surface of a separation membrane during membrane separation of the treatment water, to thereby lead retarded deterioration in membrane separation performance, and a membrane separation apparatus for performing the method. In the membrane separation method, to treatment water, a particulate cationic polymer which swells in water but does not substantially dissolve therein is added, and the treatment water is subjected to membrane separation.