45results about How to "Reduce sludge volume" patented technology

The invention discloses an underground pipeline dredging method. The underground pipeline dredging method is characterized in that sludge in a pipeline is gathered to a designated position through a pipeline dredging device and then removed out of the pipeline through external force. By means of the underground pipeline dredging method, the dredging effect of the pipeline can be effectively improved, the amount of sludge in the pipeline is greatly lowered, the occurrence ratio of sludge in the pipeline is controlled below 5%, smoothness of the pipeline is ensured, and drainage efficiency of an urban drainage system is improved.

The invention relates to water treatment flocculant. The water treatment flocculant comprises, by weight, 8-15 parts of poly-aluminum ferric silicate sulfate, 3-8 parts of chitosan, 4-10 parts of water glass, 5-8 parts of aluminum sulfate and 5-12 parts of ferric chloride. The components are added into water according to the above ratio and can effectively remove impurities and suspended solids in the water, flocculation is quick and treatment effect is good. The water treatment flocculant is high in removal rate of various metal ions in the sewage and can effectively lower color and turbidity of water so as to let water quality conform to higher requirements. The flocculant is added once during use, and operation process is simplified. The quality of the treated sewage is kept consistent, secondary waste of recoiling and dirt suction is reduced and water and energy are saved. The water treatment flocculant can be widely applied to various types of sewage, such as from steel and chemical industry, power, printing and dyeing and domestic sewage.

The invention discloses a novel high-concentration emulsified wastewater deemulsification device, which comprises a deemulsification groove (1) and a microwave generator (2) and is characterized in that the microwave generator (2) is arranged at the bottom of the deemulsification groove (1), the deemulsification groove (1) is provided with a charging pump (3) and is internally provided with a stirring mechanism (4), and the upper part of the deemulsification groove (1) is provided with an oil collecting cavity (5) which is internally provided with a rotary oil suction scraper (6). The novel high-concentration emulsified wastewater deemulsification device provided by the invention integrates the effects of chemical deemulsification and microwave deemulsification, is compact and occupies less flow area; and by means of the synergistic effect of the chemical deemulsification and the microwave deemulsification, the use level of a deemulsifier is decreased and the sludge quantity of oil and water is effectively reduced. The processing technology not only has the advantages of thoroughness in oil-water separation, good treatment effect and stability in long-term operation, but also has high deemulsification efficiency reaching above 90%.

The invention discloses a method for reducing silt coal slime in an underground water sump of a large water coal mine. The method comprises the steps as follows: firstly, before working face mining, a water draining roadway is arranged in a position lower than the elevation of a transport belt roadway, through holes are formed in the transport belt roadway at intervals, and the transport belt roadway is communicated with the water draining roadway through the through holes; a vibrating sieve is mounted at the tail end of the water draining roadway and a coal transporting roadway is arranged behind the vibrating sieve; transport equipment is arranged in the coal transporting roadway; two water storage deposition pools are arranged on one side of the water draining roadway and water inlet gates are arranged at the inlets of the water storage deposition pools; the water storage deposition pools are communicated with the underground water sump; when mining, a water coal body is discharged into the water draining roadway from the through holes and filtered by the vibrating sieve, and filtered coal is transported to an underground coal bunker; and coal slime water after filtering is deposited by the water storage deposition pools so as to achieve coal-water separation. According to the method, the coal slime water is purified in advance before entering into the underground water sump, so that the silt amount of the underground water sump is reduced and the water-holding capacity of the water sump is guaranteed.

The invention relates to an aluminum oxidation wastewater treatment method and a method for preparing ferric phosphate from wastewater. The treatment method comprises the following steps of taking water from mixed discharged phosphoric acid-containing wastewater in an aluminum oxidation process, adding alkali liquor to perform neutralizing adjustment, setting the pH value to 2.4-3.0, adding a certain amount of ferric salt into a secondary stirring tank, adding an oxidizing agent, and performing stirring and mixing in the stirring tank to generate ferric phosphate precipitate; and after separation, obtaining ferric phosphate with relatively high purity, neutralizing clear liquid with lime milk, controlling the pH value to 9.5-10.5, performing secondary precipitation, precipitating residualphosphate radicals in a calcium phosphate mode, meanwhile precipitating aluminum, fluorine and nickel ions in waste liquid synchronously, further performing mud-water separation, adding quantitative sodium hypochlorite into the clear liquid, performing aeration, oxidizing ammonia nitrogen in water, performing blowing-off, and enabling the pH value of outlet water to be 7-9. The final outlet watercan reach the national emission standard through treatment, and phosphate is effectively recovered in a precipitation mode.

The invention relates to the technical field of riverway treatment, in particular to a riverway environment treatment method which comprises the following steps: S1, cleaning floaters: arranging a grid at the upstream position of a riverway, and periodically cleaning the floaters intercepted on the grid by using cleaning equipment; s2, sludge cleaning: arranging first sludge cleaning equipment onthe riverway at the downstream of the grid; s3, flocculation treatment: spraying a flocculating agent (polyacrylamide) on the riverway at the downstream of the sludge cleaning equipment; s4, sludge retreatment; arranging second sludge cleaning equipment on the downstream riverway at the flocculating agent spraying position; and S5, disinfection treatment: spraying a riverway treatment disinfectanton the downstream riverway of the second sludge cleaning equipment. The method has the effect of conveniently cleaning sludge deposited at the bottom of the riverway.

The invention provides a sand-blocking type soil and water conservation ecological bank protection which includes a retaining wall with an empty box structure arranged along an edge water of a riverway. The retaining wall comprises a bottom plate located at the bottom of the riverway, a front baffle and a rear baffle arranged on the bottom plate, wherein the front baffle is located on the water facing side of the retaining wall, the rear baffle is located on the soil retaining side of the retaining wall, and the elevations of the front baffle and the rear baffle are lower than a normal water level of the riverway; the height of the front baffle is higher than that of the rear baffle, an accommodating cavity is formed in the retaining wall, the accommodating cavity is provided with soil materials, and submerged plants are planted on the soil materials. The sand-blocking type soil and water conservation ecological bank protection is beneficial to water and soil conservation and reducingthe amount of sludge in the riverway; through optimization of the internal structure and overall arrangement of bank protection, the space above the soil materials in the retaining wall of the empty box forms a retard mud sand pit; through retention of terrestrial plants and aquatic plants, water flow becomes slow; and through high and low arrangement of the front and rear plates, silts and scrapsare deposited in the retard mud sand pit as soon as possible when passing, and it is beneficial to soil and water conservation and reducing the amount of the sludge in the riverway.

The invention discloses a hexaaryl bis-imidazole photoinitiator. The molar ratio of a red shift substituent group in all substitutable sites of the hexaaryl bis-imidazole photoinitiator is 6-16%. Whenthe photoinitiator is applied to a photosensitive resin composition, the photoinitiator is moderate in sensitivity, good in solubility and excellent in resolution ratio and developability, inverted trapezoids cannot appear during development, the photoinitiator has good hydrophilicity, the amount of sludge in a developing solution during recycling can be remarkably reduced, and the developing solution can be repeatedly and effectively used for multiple times. The invention also provides a photosensitive resin composition containing the photoinitiator, and an application of the composition.

The invention relates to a centrifugal filtering method of paste juice in a cane sugar factory. The centrifugal filtering method comprises the following steps: (1) transporting paste juice obtained ina settling pond in a settling manner to a number-I centrifugal machine, separating the paste juice, transporting obtained filtered juice into a filtered juice box, and discharging obtained paste slaginto a paste slag and water stirring tank; (2) adding water into the mud slag and water stirring tank, and stirring; (3) transporting a material in the mud slag and water stirring tank to a number-IIcentrifugal machine, separating solids and liquid, transporting obtained filtered juice into a filter juice box, mixing the obtained filtered juice with the filtered juice in step (1), then transporting to a concentrating tank, and transporting obtained filtered paste to be used for producing organic fertilizer or feed, wherein the water content of the obtained filtered paste is less than 55 percent, and a sugar degree of the filtered paste is less than 4.5 percent. By adopting the method, the solids and the liquid of the paste juice in the cane sugar factory can be rapidly separated, the treatment time of the materials is shortened, the production efficiency is increased, the cane sugar loss of the filtered paste is reduced, the washing water amount is reduced, the energy is saved, the further comprehensive utilization of the filtered paste can be promoted, and the problems that the water content of the filtered paste is high, the filtered paste is difficult to transport and the clean production of the environment is influenced can be solved.

The invention discloses an EO/PO modified 9-phenylacridine photosensitizer which has a structure as shown in a general formula (I). When the photosensitizer is applied to a photosensitive resin composition, the composition has the characteristics of high sensitivity, high resolution, high solubility, excellent dispersion stability and excellent developing property, has better hydrophilicity during developing, and can remarkably reduce the sludge amount in a developing solution during recycling, so that the developing solution can be repeatedly and effectively used for multiple times.

The invention discloses a method for preparing a carbon-based adsorption material by using sewage advanced treatment coagulated sludge, and belongs to the technical field of sludge treatment and resource preparation. Carbon dioxide or a mixed gas of carbon dioxide and nitrogen is used as an anaerobic pyrolysis atmosphere to replace a traditional nitrogen atmosphere, carbon dioxide is used as an activating agent, pyrolysis of volatile organic compounds is promoted, the yield of tar is reduced, the porosity of a sludge carbon-based product is remarkably improved, and meanwhile the yield of the sludge is improved. The carbon dioxide enhances the splitting decomposition of the organic matters to further cause a stronger concentration effect, so that the relative content of amorphous aluminum in the carbon-based product is higher, more phosphorus adsorption sites are increased, and the carbon-based product has higher adsorption capacity on organic dyes methylene blue and phosphate and can be used for removing pollutants in a water environment.

The invention belongs to the technical field of nuclear power plant chemistry, and particularly relates to a nuclear power plant secondary circuit thermal system morpholine-ammonia synergistic chemical control method. A purpose of the present invention is to reduce the nuclear power plant secondary circuit thermal system equipment corrosion rate, reduce the amount of the corrosion product entering the steam generator, and reduce the mud residue deposition on the steam generator. According to the nuclear power plant secondary circuit thermal system morpholine-ammonia synergistic chemical control method, morpholine and ammonia are simultaneously added to the water of a nuclear power plant secondary circuit thermal system, wherein the morpholine concentration and the ammonia concentration in the nuclear power plant secondary circuit thermal system are synergistically controlled at 10-20 mg/kg and 2-5 mg/kg, such that the pH value of the water in the nuclear power plant secondary circuit thermal system is 9.7-10. With the method of the present invention, by synergistically controlling the concentrations, the corrosion on the whole secondary circuit thermal system equipment is minimized.

The invention provides an automatic control system for centrifugal filtration of mud juice in a cane sugar factory. The system comprises a sugar mud settling pond, a centrifuge I, a centrifuge II, a stirring tank, a storage tank, a washing tank and a controller. The automatic control system for centrifugal filtration of the mud juice in the cane sugar factory adopts settling centrifuges to replacevacuum suction filters without filter cloth to perform solid-liquid separation on the mud juice, a new process of fast separation is realized, the material treatment time is shortened, the productionefficiency is improved, the filtered mud sucrose loss and the filtered mud quantity are reduced, the washing quantity is reduced, energy sources are saved, further comprehensive utilization of the filtered mud is promoted, and the problems of high moisture content and difficult transportation of the filtered mud and influence on clean production of the environment are solved. The system realizessolid-liquid fast separation of the mud juice in the cane sugar factory, shortens the material treatment time, improves the production efficiency, reduces the filtered mud sucrose loss and the filtered mud quantity, reduces the washing quantity and saves the energy sources.

The invention discloses a method for improving the dehydration property of sludge in a printing and dyeing industry. The method comprises the following steps: concentrating sludge generated after coagulation of printing and dyeing wastewater and then carrying out hydrolytic acidification on the sludge; adding a polyacrylates copolymer, mixing and then reacting for 10-30 min, fully separating out copolymer molecules and combining the copolymer molecules with sludge particles; heating the sludge to enable a molecular chain of the polyacrylates copolymer to move and curl; insulating for 10-60 min, enabling the molecular chain of the copolymer molecules together with the sludge particles to be agglomerated together, and shrinking and deforming to form pores among the sludge particles; cooling,and supporting the pores among the sludge particles by a three-dimensional network structure formed after hardening of the molecular chain of the copolymer; and filtering and dehydrating the sludge.By the supporting effect of the molecular chain of the hardened copolymer, a water permeable duct during filtering of the sludge is formed, deformation of the duct in a filtering process is prevented,and the filtering and dehydrating performance of the sludge is improved.

The invention discloses a method for reducing specific resistance of concentrated sludge. The method includes steps of concentrating sludge until the solid content of the sludge is higher than 5%, carrying out anaerobic digestion treatment, fermenting partial organic matters in the sludge to generate organic acid and continuously lowering the pH (potential of hydrogen) of digestion liquid until the pH of the digestion liquid is lower than 5; pumping the sludge into reaction tanks, adding temperature-responsive polyacrylate copolymers with the glass transition temperatures (Tg) of 40-80 DEG C into the reaction tanks, mixing the sludge and the temperature-responsive polyacrylate copolymers with one another and then carrying out reaction for 10-30 min; carrying out heat exchange on the sludge, then pumping the sludge into heating tanks, heating the sludge and then preserving heat for 10-60 min; cooling the sludge by means of heat exchange until the temperature of the sludge is lower thanthe Tg of the polyacrylate copolymers, quickly hardening the copolymers to form stereoscopic networks, supporting formed pores between sludge granules and forming permeable channels during filter; immediately filtering and dewatering the sludge. The method has the advantage that the specific resistance of the sludge can be reduced under support effects of stereoscopic network frameworks formed bymolecular chains of the hardened polyacrylate copolymers.

The invention discloses a method for treating wastewater containing trivalent arsenic by seed crystal induction and application thereof, and the method comprises the following steps: adding zinc-iron hydrotalcite seed crystal into wastewater to be treated containing trivalent arsenic, slowly dropwise adding a sodium hydroxide solution and a mixed metal salt solution containing Fe < 2 + > and Zn < 2 + > at the same time, stirring to react, and controlling the pH value of a reaction system to be greater than 7 and constant; and after standing, carrying out solid-liquid separation, thereby obtaining the product. According to the method for treating the wastewater containing the trivalent arsenic through seed crystal induction, the hydrotalcite-like compound with a layered structure can be obtained, so that the purposes of efficiently treating the trivalent arsenic in the wastewater and forming highly-stable arsenic-containing precipitates are achieved, and the arsenic toxicity leaching concentration is obviously lower than that of the arsenic-containing precipitates obtained in an existing precipitation method; the practical application effect is excellent; the volume of the hydrotalcite-like arsenic-containing sludge formed by the method for treating the trivalent arsenic-containing wastewater through seed crystal induction provided by the invention is reduced by 97.37%, and the subsequent treatment cost is greatly reduced.

The invention relates to the technical field of sewage treatment, in particular to an environment-friendly sewage treatment device which comprises a water channel, the water channel is S-shaped, notches are formed in the outer surface of the water channel corresponding to the corners, and a supporting plate is slidably inserted into the inner side of each notch in the vertical direction; a sealing plate is fixedly connected to the position, corresponding to the side face of the supporting plate, of the outer surface of the water channel, vertical baffles are vertically and fixedly connected to the upper end face of the supporting plate, the upper ends of the multiple vertical baffles are jointly controlled by a lifting mechanism to move up and down, and two second connecting frames extending in the front-back direction are arranged above the water channel. The device is used for small-water-flow sewage treatment, can guarantee continuous water flow, accumulates and treats inner side sludge, effectively avoids the problem of blockage of the filter screen, effectively prolongs the interval time of inner side maintenance, is more worry-saving and simple to use, can be remotely controlled to perform inner side decontamination in the later maintenance process, and is more convenient to use. And inconvenience caused by manual disassembly and assembly is avoided.