69results about How to "Low design and construction costs" patented technology

The invention discloses a soil remediation device capable of removing omethoate components in farmland soil. The device comprises an original soil hopper, a blast sorting machine, a vibrating screening machine, a magnetic screening machine, a grinding machine, a three-stage microbe spraying and degrading reactor, an adjusting type spray tower, an electric heating blast dryer and a remedied soil storage silo. The device has the advantages that by creatively utilizing microbial degradation reaction of bacillus cereus, with participation of transphosphorylase, C-P bonds in the main components, O,O-dimethyl-S-[2-(methylamino)-2-oxo-ethyl] thiophosphate molecules, in omethoate, are broken and the main components are gradually degraded into harmless simple compounds, such as CO2, N2 and H2O, in a temperature range of 35-38 DEG C; the soil purified through microbial degradation can be repeatedly applied to agricultural production; meanwhile, no toxic chemical substances are used or generated in a method, thus basically putting an end to secondary harm to the environment in the soil remediation process.

The invention discloses a treatment method for removing lead in electroplating wastewater. The wastewater is sequentially treated by a collecting well, a coarse screen, a primary sedimentation tank, a pH value adjusting tank, a biological fermentation-sedimentation reaction purifying system, an aerobic biofilter, a secondary sedimentation tank and a water purifying tank. In the method, the biological fermentation characteristics of vegetable xanthomonas are utilized creatively; in the presence of D-glucose, a lactonization reaction is performed in the vegetable xanthomonas, and finally L-ascorbic acid (vitamin C) is produced by fermentation; and based on the characteristic that the L-ascorbic acid can be combined with lead ions to generate water-insoluble and nontoxic salt, the lead ions in the electroplating wastewater can be removed in a sedimentation process. Meanwhile, due to the utilization of the L-ascorbic acid produced by adopting D-glucose in the biological fermentation reaction, the cost is far lower than that of directly adding L-ascorbic acid into the wastewater, and the material cost in wastewater treatment can be remarkably reduced.

The invention discloses a treatment system for removing lead from electroplating wastewater. The treatment system comprises a water collecting well, a coarse screen, a primary precipitation tank, a pH value adjusting tank, a biological fermentation-precipitation reaction purification system, an aerobic bio-filter, a secondary precipitation tank and a clear water tank. According to the system, the biological fermentation characteristic of xanthomonas is creatively utilized, in the presence of D-glucose, the inside of the xanthomonas is subjected to a lactonization reaction, L-ascorbic acid (vitamin C) is produced through fermentation finally, then characteristics that the L-ascorbic acid can be combined with lead ions and water-insoluble and non-toxic salts are produced are utilized, and the lead ions in the electroplating wastewater can be removed through a precipitation process. Meanwhile, L-ascorbic acid produced by D-glucose subjected to a biological fermentation reaction is used, the cost is far lower than direct addition of L-ascorbic acid to the wastewater, and the material cost of wastewater treatment can be greatly reduced.

An oil removing method for domestic wastewater is disclosed. The wastewater flows through a collecting well, a coarse screen, a primary sedimentation tank, a pH value adjusting tank, a nanometer micropore ultrasonic wave batch polymerization reaction tank, a secondary sedimentation tank, a high-pressure discharge organorhodium catalytic polymerization reaction tank, a third sedimentation tank and a purified-water tank in order. Synergistic chemical effects of ultrasonic waves with a specific frequency (that is 25100-27800 Hz) are utilized creatively in the method, C-H bond breaking and rapid re-bonding of organic matters in the wastewater under the condition are performed on the surface of a nanometer micropore membrane material, thus polymerizing on surfaces of nanometer micropore surface polymers. When ultrasonic wave catalyzed polymerization and a stirring process are performed alternatively, molecular weights of polymers of the organic matters gradually increase, the polymers of the organic matters gradually converge into large-particle insoluble substances, and the large-particle insoluble substances are separated from the surface of the nanometer micropore membrane material, dispersed in the wastewater in a form of suspended solids, and are finally removed through sedimentation processes.

The invention discloses a soil restoration method for removing organochlorine pesticide ingredients in farmland soil.The characteristic that organochlorine pesticide ingredients absorbed by soil can be detached and desorbed after being heated is creatively utilized, the organochlorine pesticide ingredients are volatilized into air in the form of vapor, then the vapor is introduced into high temperature plasma flame, the catalytic cracking effect special for the high temperature plasma flame is utilized, and organochlorine pesticide molecular bonds are broken and split into small molecular substances and can be discharged after being purified; meanwhile soil obtained after thermal desorption-plasma pyrolysis purification treatment can be applied to agricultural production repeatedly.

The invention discloses a treatment system for removal of COD (chemical oxygen demand) in industrial waste water. The treatment system comprises a collecting well, a coarse screen, a primary sedimentation tank, a pH value adjusting tank, a nano micropore ultrasonic batch polymerization reactive tank, a secondary sedimentation tank, an aeration nitrifying tank, a biological denitrification tank, a water purifying tank and the like. The system creatively uses a synergistic chemical effect of specific-frequency ultrasonic waves (25100-27800 Hz), and organic substances in the waste water under this condition can generate C-H bond fracture and rapid recombination on the surface of a nano microporous membrane material, thus a polymerization reaction happens on the surface of a nano microporous surface polymer; and when an ultrasonic catalytic reaction and a mixing process occur intermittently and alternately, the molecular weight of an organic polymer can increase constantly, so that large-particle insoluble matters are gradually formed by converging, fall off from the surface of the nano microporous membrane material, are dispersed in the waste water in the form of suspended matters, and are finally removed through a precipitation process.

The invention discloses a treatment method for removing cadmium in electroplating wastewater.Wastewater passes through a water-collecting well, a coarse screen, a primary settling tank, a pH value adjusting pool, a tea seed meal-aeration flotation purification system, a heating and contracting pool, an alkalizing and settling pool, a secondary pH value adjusting pool, a secondary settling pool and a water purifying pool to be treated.According to the treatment method, the cadmium ion flotation characteristic of tea saponin in tea seed meal is utilized creatively, in the condition that the pH value is 5.5-6.5, the saponin in the tea seed meal is combined with cadmium ions in the wastewater to form a molecular structure prone to air floatation, then a great number of air bubbles are introduced to the water through compressed air aeration, and the air bubbles carry the saponin combined with the cadmium ions to be floated on the water surface and gathered to form foams, so that the cadmium ions in the wastewater are removed in a targeted mode; meanwhile the tea seed meal is residues obtained after camellia seeds are subjected to oil expression, cost is low, the tea seed meal is easy to obtain, and material cost of wastewater treatment can be greatly lowered.

The invention discloses a treatment method for removing zinc in electroplating wastewater. The wastewater is sequentially subjected to the treatment of a water collecting well, a coarse bar screen, a primary settling pool, a pH value regulating pool, a pulse high-voltage-electricity microbiological flocculation reaction pool, an aeration oxidation pool, a biological denitrification pool, a secondary settling pool and a water purifying pool. The method has the advantages that the microbial flocculation features of common beer yeast and bacillus licheniformis are creatively utilized; through the specific peak voltage value pulse high-voltage discharging process, the adsorption bridging features of the beer yeast and the bacillus licheniformis on zinc ions are excited, so that the zinc ions in the wastewater take a flocculation reaction on the microorganism surface; flocculates with great diameter are gradually formed, and are finally removed through the precipitation process. Meanwhile, the beer yeast and the bacillus licheniformis are common microorganisms, and can be easily obtained, so that the cost is low, and the material cost of wastewater treatment can be greatly reduced.

The invention discloses a modified fly ash shaking manganese adsorption and removal device. According to the modified fly ash shaking manganese adsorption and removal device, the chemical bonding characteristic of ions of artificially modified fly ash is utilized creatively, that is, after fly ash is subjected to special processing, chemical bonding between ions in the specially processed fly ash and manganese metal ions can be carried out in a normal-temperature aqueous solution, so that the manganese metal ions are adsorbed to the surfaces of modified fly ash particles, and the purpose of adsorption of the manganese metal ions in wastewater for purification can be realized. Moreover, the modified fly ash shaking manganese adsorption and removal device adopts an advanced microwave technology, that is, fly ash is modified through microwave radiation of a specific frequency, so that the volume expansion of fly ash particles can be effectively promoted, and the adsorption efficiency of the fly ash is greatly improved. In addition, due to the adoption of the modified fly ash shaking manganese adsorption and removal device, the secondary utilization of the waste (namely, fly ash) of thermal power plants and coal-fired boilers is realized, so that environmental benefits are very high.

The invention discloses a treatment method for removing manganese from metallurgical industrial wastewater. The wastewater passes through a water collection well, a coarse screen, a primary sedimentation tank, a pH value regulation tank, a modified fly ash vibratory adsorption type manganese removal device, an aeration tank, a biological oxidation filter tank, a secondary sedimentation tank and a water purification tank sequentially. By innovatively making use of ion chemical bonding characteristic of artificial modified fly ash, the fly ash processed specially and manganese metal ions can be in ion chemical bonding action in a normal-temperature water solution to enable the manganese ions to be adsorbed on surfaces of modified fly ash particles, and accordingly adsorptive purification of the manganese metal ions in the wastewater is realized. In addition, by means of advanced microwave technologies, the fly ash is modified by microwave radiation in specific frequency, volume expansion of the fly ash particles can be effectively promoted, and consequently adsorption efficiency of the fly ash is greatly improved. Furthermore, by the treatment method for removing manganese from metallurgical industrial wastewater, secondary utilization of the fly ash which is waste of coal-fired boilers and thermal power plants is realized, and high environmental benefits are achieved.

The invention discloses a system for treating heavy metal industrial wastewater containing oil. The system comprises a water-collecting well, a coarse screen, a microbubble air floatation mineral oil adsorption device, a mineral oil catalysis and heavy chemical desorption reactor, a protopectin-heavy metal rotary adsorption pond, an aeration nitrification pond, a biological nitrogen removal pond, a settling pond and a water purification pond. A V-shaped netty roller containing pumpkin peel is creatively used as a contact reaction medium, when wastewater containing heavy metal is fully mixed with the pumpkin peel, heavy metal ions in wastewater are adsorbed by non-water-soluble protopectin in pericarpic cells, and part of residues precipitate at the bottom of the adsorption pond to form sludge matter gradually. Meanwhile, the pumpkin peel in the V-shaped netty roller can be replaced according to consumption conditions as a low-cost consumable.

The invention discloses a treatment system for removing cellulose from papermaking wastewater. The treatment system comprises a water collection well, a coarse screen, a primary sedimentation tank, a pH value regulation tank, an ultrasonic catalytic crosslinking and cellulose filter-pressing separation system, an aeration tank, a biological oxidation filter tank, a secondary sedimentation tank and a water purification tank. By innovatively taking the advantage that cellulose has a characteristic of crosslinking reaction in existence of certain weak acid substances, citric acid is selected as a crosslinking agent, and trisodium citrate is selected as a catalyst; the citric acid and the trisodium citrate are added into papermaking wastewater containing a great quantity of natural celluloses to realize well mixing, and then the citric acid and the natural celluloses are in cyclic anhydride-esterification reaction under catalytic activation action of ultrasonic to generate a cellulose gel substance with a space chemical cross-linked structure. The cellulose gel substance is insoluble in water and has a flocculation characteristic, and accordingly flocculent settling and purification of high-concentration COD in the papermaking wastewater can be realized, and simultaneous removal of COD and celluloses in the papermaking wastewater is realized.

The invention discloses a method for using a crosslinked polyvinylpyrrolidone supporter to absorb and purify ammonia-nitrogen wastewater. The method creatively utilizes the selective adsorbability of crosslinked polyvinylpyrrolidone to ammoniacal nitrogen in water, and a carbanyl group in the molecular structure can be compounded with an amino group to form a hydrogen-bond complex compound. Artificial zeolite containing crosslinked polyvinylpyrrolidone is mixed with domestic wastewater to sufficiently absorb ammoniacal nitrogen in the domestic wastewater, then crosslinked polyvinylpyrrolidone releases the absorbed ammoniacal nitrogen in a heating desorption manner, and the absorbed ammoniacal nitrogen is released in the form of ammonia gas.