1811 results about "Industrial water" patented technology

The present invention relates to an integrated closed loop system for aquaculture in at least one culturing tank and using continuous bioreactor technology for the biological treatment and removal of organic material, nitrogen and phosphorous, comprising: an integrated, partially or wholly closed loop system for waste water treatment, where the water contains nitrogen containing compounds and/or substances, comprising at least one production unit of such nitrogen containing compounds and/or substances and using continuous bioreactor technology for the biological treatment and removal of organic matter, nitrogen and phosphorous from the said water at continuous flow, comprising: a) at least one suspended carrier bioreactor for bacterial growth under anoxic conditions to cause anaerobic denitrification, with one or several compartments, preceding b) at least one suspended-carrier bioreactor for bacterial growth under oxic conditions to cause aerobic nitrification, c) the denitrification taking place after the production unit, and d) the nitrification taking place prior to the production unit in a by-pass mode as part of the continuous flow.

On-Line and Off-Line methods of simultaneously cleaning and disinfecting an industrial water system are described and claimed. The methods involve the addition to the water of the industrial water system of a Compound selected from the group consisting of the alkali salts of chlorite and chlorate and mixtures thereof; and an acid, followed by allowing the water in the industrial water system to circulate for several hours. The reaction of the alkali salts of chlorite and chlorate and acid produces chlorine dioxide in-situ in the water of the industrial water system. The chlorine dioxide kills microorganisms and the acid acts to remove deposits upon the water-contact surfaces of the equipment. An alternative method involves the use of a chelating agent and a biocide. Other possible cleaning and disinfection reagents may be added as needed including corrosion inhibitors, chelating agents, biocides, surfactants and reducing agents. These cleaning and disinfecting methods work in a variety of industrial water systems including cooling water and boiler water systems.

The invention provides a TiO2-SiO2 composite aerogel and a preparation method of the TiO2-SiO2 composite aerogel. The Ti/Si molar ratio of the TiO2-SiO2 composite aerogel is ranging from 1:10 to 10:1, the density thereof is 0.1-0.35 g/cm<3>, the porosity thereof is 84-94%, the aperture thereof is 5.0-20.0nm, the pore volume thereof is 1.0-5.0cm<3>/g and the specific surface thereof is 500-1200m<2>/g. The preparation method mainly comprises the steps that modifier consisting of alcohols, silanes and alkanes reagent is used for carrying out the modification and solvent replacing disposal. The TiO2-SiO2 composite aerogel of the invention has the advantages of low density, large specific surface, high pore volume and high porosity; the porosity can achieve 84-94%; the preparation method of the TiO2-SiO2 composite aerogel adopted by the invention adopts cheap and easily gained raw material TiCl4 and industrial water glass and can reduce the production cost; furthermore, the normal-pressure dry-process is convenient and feasible, and suitable for large-scale industrialization production and application.

The present invention provides a device for producing a water treatment solution from a solid chemical block for distribution into a water system selected from the group comprising an institutional water system and an industrial water system. The device includes a housing to contain the solid chemical block. A fluid, preferably water at ambient temperature, is introduced into the housing to dissolve the block and form a liquid solution that may then be dispensed into either an institutional water system or an industrial water system. A method of dispensing the liquid solution with the device is also provided.

The invention discloses a method for preparing silicon dioxide aerogel with low density and large specific surface area at ordinary pressure. The method comprises the steps of taking cheap industrial water glass as a precursor and absolute ethyl alcohol as a solvent, performing hydrolysis and polycondensation reaction by the catalysis of acid and alkali respectively to form wet gel, performing water bath drying and aging, performing solvent exchange for many times, and performing graded drying at the ordinary pressure after surface modification to form the silicon dioxide aerogel with the low density. According to the method, the completely modified super hydrophobic silicon dioxide aerogel is obtained by using the least amount of modifier; the cheap industrial water glass is adopted as a silicon source, so that the production cost is greatly lowered; and the energy source is greatly saved for drying at the ordinary pressure in comparison with supercritical drying.

A composition useful for nitrate removal, and treatment of water, selected from mining, agriculture industries, military operations, or others water stream, or industrial waters, livestock wastewater and a livestock water stream or from other sources, which comprises a sufficient amount of organic modified clay, a highly crosslinked carbohydrate polymer with branched-chain structure and having present sulfide or disulfide group, or alloy or blend with triazine-trithione sodium salt, high swelling sodium bentonite or calcium bentonite, and activated carbon, without pH adjustment, and/or presents of electropositive metals inorganic acid or alkaline compounds.

There is provided a method of inhibiting the development of a biofilm adjacent a surface, the method comprising intermittently applying a biofilm inhibiting substance to a collection of microorganisms having biofilm developing potential. There is also provided a method of inhibiting the development of a biofilm adjacent a surface, the method comprising inhibiting the biofilm developing potential of a collection of microorganisms without completely eradicating said collection of microorganisms. Also provided are a system for inhibiting the development of a biofilm, and a method and system for inhibiting the production of an enzyme by a collection of microorganisms.

The invention discloses a water-based weather-proof stain-proof thermal reflective insulation coating which comprises the following components in percentage by mass: 30%-50% of film forming emulsion, 10%-20% of heat reflection pigment, 6%-15% of hollow microspheres, 5%-10% of fillers, 3%-8% of a water repellent agent, 4%-8% of an assistant and the balance of de-ionized water. By introducing the industrial water repellent agent, the coating is excellent in weather resistance, stain resistance and adhesion on basic materials, and then the reflective insulation property is kept for a long time. The invention further provides a preparation method of the coating; the preparation method comprises the following steps: stirring, uniformly mixing, filtering, and packaging. According to the preparation method, the damage on the hollow microsphere structures can be reduced to the maximum extent, and the coating is guaranteed to be good in heat insulation property; in addition, the coating is low in VOC (volatile organic compound) content and environment-friendly, and the preparation process is simple and easy for large-scale industrialized production.

A method for controlling treatment of an industrial water system is disclosed. The method comprises the steps of providing an apparatus for controlling delivery of at least one treatment chemical, the apparatus comprising at least one sensor and an electronic input/output device carrying out a protocol; measuring a parameter of the industrial water system using the at least one sensor; relaying the measured parameter to the electronic device; adjusting the protocol based on the measured parameter; delivering a concentrated treatment chemical into a stream of the industrial water system according to the adjusted protocol, the concentrated treatment chemical comprising an active ingredient, the active ingredient traced as necessary, the active ingredient having a concentration; repeating the measuring, the adjusting, and the delivering; and optionally repeating the steps for n-number of parameters, n-number of active ingredients, and/or n-number of concentrated treatment chemicals.

Fluorescent monomers are described and claimed which are synthesized by reacting a substituted or non-substituted naphthalic anhydride with an amine and with a moiety containing a polymerizable group. Such monomers are useful for the preparation of tagged treatment polymers. Such tagged treatment polymers are useful as scale inhibitors in industrial water systems.

The invention relates to the field of chemical hydrometallurgy, in particular relates to a method for separating and recovering vanadium and chrome from a vanadium and chrome-containing waste. The method comprises the following steps: (1) alkaline leaching; (2) adsorption of alkaline leaching liquid; (3) acid leaching; (4) ion exchange; (5) desorption and devanadation; and (6) vanadium precipitation. The method has the advantages that: (1) the method has lower cost than a primary and secondary compound amine extraction process; (2) the method has short process flow, convenient operation, easy control, easy mastering and mature production process of recovering vanadium and chrome once the vanadium and chrome are separated; (3) the method has low production cost, and excluding sales revenue from chrome residues and calcium sulphate, the cost of fine vanadium is only 50000-60000 yuan/t; (4) the vanadium and the chrome are completely separated by the method; and (5) the method produces no secondary pollution, all the production processes are performed at normal temperature and has no roasting fume, and industrial water is recycled and subject to zero discharge; produced neutralization residues are of high-quality chrome residues and calcium sulphate and can be sold to chemical plants and cement plants as a raw material.

The invention relates to a low-phosphorus water treatment composition, which comprises the following compositions in part by weight: 1 to 3 parts of phosphorus carboxylate, 1 to 30 parts of dirt dispersion agent and 1 to 5 parts of bactericide and algicide. When the concentration multiple is 2 to 6, the corrosion rate and the scale deposition rate of a circulating cooling water system of carbon steel and copper pipelines are all smaller than circulating water quality monitoring and controlling indexes, the industrial water is saved, the environmental pollution is reduced, and the low-phosphorus water treatment composition is widely applied to similar circulating cooling water systems in chemical engineering, petrifaction, steel, electric power and the like, and has great social and economic benefits and promotion value.

On-Line and Off-Line methods of simultaneously cleaning and disinfecting an industrial water system are described and claimed. The methods involve the addition to the water of the industrial water system of a Compound selected from the group consisting of the alkali salts of chlorite and chlorate and mixtures thereof; and an acid, followed by allowing the water in the industrial water system to circulate for several hours. The reaction of the alkali salts of chlorite and chlorate and acid produces chlorine dioxide in-situ in the water of the industrial water system. The chlorine dioxide kills microorganisms and the acid acts to remove deposits upon the water-contact surfaces of the equipment. An alternative method involves the use of a chelating agent and a biocide. Other possible cleaning and disinfection reagents may be added as needed including corrosion inhibitors, chelating agents, biocides, surfactants and reducing agents. These cleaning and disinfecting methods work in a variety of industrial water systems including cooling water and boiler water systems.

The invention relates to a preparation method of large pore volume and large pore diameter silica. With industrial water glass as silica source, water soluble polymer and surfactant as hydrophobic agent and hole forming template, by controlling reaction conditions such as temperature, hydrophobic agent, final ph value, etc., the large pore volume silica products are produced; the pore diameter is narrowly distributed, the pore volume is between 2-2.5cm3/g and the average pore diameter is between 18-35 nm. Especially, the more optimal three-step heating regulation is more beneficial to the stability of hole forming and hole structure and that the distribution of pore diameter reaches between 25-35nm is more proper to be used as flatting agent.

The invention concerns an acoustic sensor (44) for identifying obstruction of a circular grit trap for recycling fine sand in an industrial water clarifying plant. The circular grit trap comprises a cylindrical body having an outer wall and having at one first end a first sand-containing fluid inlet for receiving sludge and fine sand and a first overflow outlet of fluid not containing sand orthogonal to the fluid inlet, to evacuate said sludge, and at a second end a second sand-containing fluid underflow outlet coaxial with the first fluid outlet, to recover said sand. The acoustic sensor is sensitive to the noise radiated by the flow of the sand-containing fluid in the circular grit trap and is applied against the outer wall of the cylindrical body of the circular grit trap, in the plane of the fluid inlet but not coaxially therewith. Said acoustic sensor transmits a warning signal when an abnormal amplitude variation of sound level is measured in the bands of ⅓ octave centered on frequencies of 25 Hz or 200 Hz.

A fast detection method of water microbe includes filtering water sample by microhole filtering film with different hole diameter, carrying out ATP luminous detection for used filtering film and for ATP standard solution and new microhole filtering film, calculating linear regression equation of Lg [ATP] = A+ BLg [CPM] based on logarithmic relation of ATP concentration to its luminous pulse counts and calculating out microbe content in water as well as ATP concentration in sample according CPM value of filtering film.

The invention relates to an ammonia desulfurization method for effectively removing chlorine and fluorine ions and heavy metal ions. The invention is characterized in that prewashing is carried out before flue gas enters into a desulfurization tower, industrial water and/or circulating water can be used as washing liquid in a prewashing tower, circular spraying and washing are performed, 90-95% Cl<-> and F<-> in flue gas are removed, 70%-80% soluble metal ions Fe<3+>, Hg<2+> and Pb<2+> can be removed, 70%-80% of dust is removed, the washed pollutant is sent to a waste water treatment system through slurry-containing waste water discharged from the bottom of the tower for treating to reach the standard and then discharge. The ammonia desulfurization method of the invention can thoroughly eliminate the problems that severe equipment corrosion is caused by enrichment of Cl<-> and F<-> on the desulphurization system, and heavy metal of the finished product fertilizer exceeds the standard.The desulphurization byproduct ammonium sulfate fertilizer obtained by the method can reach or exceed the quality standard of the national standard superior products.