84 results about "Sludge" patented technology

The invention discloses a method and a system for modularized combined treatment of high-difficulty organic waste water, and the treatment system comprises: a primary settling tank, an adjusting tank, a reinforced flocculation tank, a precipitation separation tank, a secondary flocculation settling tank, a buffering water tank, a pH adjusting tank, a primary honeycomb microelectrolytic tank, a flocculation settling tank, a secondary honeycomb microelectrolytic tank, an intermediate tank, a heat exchanger, a microwave catalytic oxidation device, a secondary catalytic oxidation pot, and a re-oxidation filter pipe. The treatment method adopts a combined technical scheme of a multistage honeycomb iron carbon microelectrolytic module, a reinforced flocculation module and a microwave electro-catalytic oxidation module; the invention has the characteristics of high applicability, good treatment effect, and unit modularization; the modules can be combined and cascaded freely according to the waste water condition, and thus different waste water treatment effect requirements and waste water quantity requirements are adapted; the operation cost is low; the sludge amount is low; no secondary pollution is caused; and the method is an environment-friendly high-difficulty waste water treatment method.

The invention discloses a mobile contaminated bottom mud bag pocket dewatering and volume reduction treatment method which is characterized by comprising the following steps of: transporting contaminated bottom mud in a river or water reservoir to closed pipeline mixers via an environment-friendly sand dredger or mud pump, throwing a stabilizing and curing agent into the first pipeline mixer, throwing a flocculating and conditioning agent into the second pipeline mixer, finally dewatering and reducing volume of bottom mud in geotex pipe pockets, and curing and stabilizing bottom mud contaminates. After the bottom mud in the geotex pipe pockets is solidified for 7-50 days, the moisture content of the bottom mud reaches less than 55%. The bottom mud in the bag pockets is transported off the site by using a mobile car body. Treatment or resource utilization reaches national relative standards. The technological innovation bridge spot of the method is 'environment-friendly sand dredging + agent + geotex bag pocket dewatering + natural drying of bottom mud + mobile car body'. Not only is the sludge treatment amount large during project implementation process, but also no site area is occupied, the technology is simple, and the operating cost is low. Good economic benefits are achieved.

The invention relates to a method for producing energy-saving sintered bricks from mud. The sintered brick is made from river mud, municipal sludge and sea mud as raw material, by mixing with silica-based inorganic binder at a certain proportion, ageing, extruding with a extrusion molding machine to obtain blanks, cutting the blanks with a cutter, drying, sintering and burning. The invention makes full use of mud and the additional amount of mud is high up to 50%. The invention realizes energy and resource conservation and helps develop the circular economy and realize the comprehensive utilization of resources. The produced energy-saving sintered brick has the advantages of high porosity and good heat-insulation effect. During the sintering process, the flue gas is circularly treated, the exhaust gas is treated with acidic and alkaline solutions to remove harmful substances (such as dioxin) from the exhaust gas, and harmful substances such as heavy metals are solidified, therefore, the whole production process and the final product do not cause environmental pollution or hazard.

The invention relates to a micro-electrolytic filler containing a catalyst, which comprises ferrum and carbon and is added with a catalyst. The mass percents of ferrum, carbon and catalyst in the filler are 45-55%, 40-50% and 1-5%, respectively. The catalyst is one or more of the following elements: copper, vanadium, molybdenum and antimony. The invention has the advantages that, firstly, the COD de-electrolyzing rate in wastewater which has large concentration of organic matters, high poisonousness and high chromaticity and is hard to treat biochemically is improved by 10-20%, the COD removing rate is about 35-60%, the chromaticity can be removed by 60-90% and meanwhile the B/C value is improved by 0.1-0.3 and biodegradability of the wastewater is improved; secondly, the cylindrical cellular structure of the filler is beneficial to ensure adequate contract reaction of the filler and water to reduce the flowing resistance of the water; and thirdly, the carbon bed is not easy to passivate and harden and be blocked by iron mud, and the amount of sludge is reduced.

The invention relates to a system for urban sludge flue gas drying middle-temperature pyrolysis carboization. The system comprises a hot air device and a feed storage metering device, a low-temperature flue gas drying device, a bag-type dust remover, a middle-temperature pyrolysis carboization device, a flue gas waste heat recovery device and a tail gas purification and deodorization device which are connected in sequence, and the hot air device supplies hot air to the low-temperature flue gas drying device and the middle-temperature pyrolysis carboization device. According to the system for urban sludge flue gas drying middle-temperature pyrolysis carboization, by means of optimal combination of the system and energy gradient utilization, the energy consumption of the system is reduced, and the thermal efficiency is effectively improved; by means of middle-temperature pyrolysis, the problem that coking and blocking are caused by local overheating of the sludge is solved, and the reliability of the system is improved. The system adopts a low-temperature flue gas drying technology and serves as front section sludge drying core equipment, the atomizing drying efficiency is high, and the time is short; a principle of combining the drying section with a spouted bed and a fluidized bed can effectively control the particle size of dried discharging materials to be 2-4 mm, and the subsequent carbonization efficiency is effectively improved.

The invention discloses a method for preparing an absorbing material by using lakebed sludge. According to the method, the absorbing material can be prepared by the following steps of adding bagasse and red soil into solid waste of the lakebed sludge and coal ash which serve as raw materials, and then drying, screening, carbonizing, calcining and drying. The method is simple, easy to operate and wide in application rang. Laboratory tests prove that the absorbing material can remove heavy metal in a water body effectively and can adsorb common dyes well.

The invention discloses a disposing method of hardening sludge imbed, which comprises the following steps: adding solid material cement, clay or clayey soil into sludge; stirring each group evenly to form solid material; proceeding fill-imbed disposition; usage of each group followed by weight at sludge 100 wt%, cement 15-80 wt%, clay or mild 20-160 wt%. The invention can realize environmental usage, which saves cost obviously.

The invention discloses a double-alkali neutralization treatment method of heavy metal-containing acidic wastewater. According to the double-alkali neutralization treatment method, sodium hydroxide is mainly used for adjusting a pH value so that metal ions in acidic wastewater form precipitates, the precipitates are recovered, the recovered metal sludge is treated and then can be used as metal oxides for next use, through lime use, fluorine ions in the wastewater form precipitates, and the precipitates do not contain heavy metals and can be treated by a common sludge treatment method. The sludge treated by the double-alkali neutralization treatment method is not used as dangerous waste or can be used as a fluorite-like accessory material, and the rest of the wastewater satisfies discharge standards by slight treatment.

The sludge concentration dehydration equipment is a box body formed from two water packing-off plates, two overflow plates, a spreader plate and a flow-streaming plate, the top of said box is equipped with removable sealing cover, and the bottom of said box body is equipped with a conical sludge hopper with discharge outlet, the inlet of sludge is set in the lower portion of one side of said box body the concentrated and separated sludge and clean water can be respectively overflowed out.

The invention relates to a discharging device for a sludge bin. The device is positioned on the lower part of the sludge bin, and comprises a plurality of screw charging machines. The central axes of the screw charging machines are arranged along a plurality of directions in the horizontal plane, and are opposite to one another. The charging device has the advantages of simple structure and high efficiency, can be widely applied to the charging of viscous materials such as sludge, and aims to solve the problem of the uniform discharging of the viscous sludge with lumps in the sludge bin. Pairwise opposite screws are used for pushing the materials to a material outlet, the diameter of a material inlet is greater than that of the material outlet, and charging speed is lower than discharging speed, so that an arch breaking effect is achieved. When the material inlet is clogged, high-speed airflow is used for removing the clogging of the lumps, so that continuous charging and uniform discharging are ensured.

The invention relates to a method for recovering copper, nickel and chromium in electroplating sludge. The method for recovering the copper, the nickel and the chromium in the electroplating sludge comprises the steps that the electroplating sludge is subjected to acid leaching treatment through sulfuric acid, and a leaching solution is taken; ammonia water is added into the leaching solution until no sediment is generated, and a precipitate containing chromium element and a reaction liquid are obtained; ammonium ions in the reaction liquid are removed, and thus a treating liquid is obtained;copper ions in the treating liquid are extracted, and an extraction phase containing the copper ions and an aqueous phase solution are obtained; the extraction phase containing the copper ions is extracted back through the sulfuric acid and crystallized, and thus a copper sulphate crystal is obtained; and the aqueous phase solution is crystallized, and thus a nickel sulfate crystal is obtained. According to the method for recovering the copper, the nickel and the chromium in the electroplating sludge, the selectivity to the copper, the nickel and the chromium is good, and the recovery rate ishigh.

The invention belongs to the field of sludge treatment and particularly relates to a sludge solidifier and a preparation method of the solidifier. The sludge solidifier mainly comprises magnesia, modified kieselguhr, wood ceramic, poly-ferric sulfate, tea saponin, vanillin and sodium silicate. The prepared sludge solidifier has the advantages that the sludge solidifier is simple to operate, has good dehydration, and microorganism and heavy metal removal effects, improves the quality of sludge filtrate, and reduces environmental pollution; the sludge solidifier is low in cost and environment-friendly, and is convenient for large-scale popularization and application.

The invention discloses a method for manufacturing ecological building blocks of a riverway protection slope from sewage plant sludge, belonging to the technical fields of resource utilization and environmental protection. The method comprises the following steps of: uniformly mixing and stirring sludge, cement, gravels, sand and water of a sewage plant; and prepressing and forming under a certain pressure and culturing under the steaming and curing condition to manufacture ecological protection slope building blocks for riverway renovation. The invention can solve the problems of sludge disposal and treatment, solves the problem of secondary pollution of heavy metals and pathogens in sludge and realizes the renewable resource recycling of the sludge. The produced ecological building blocks have the advantages of high strength and blush resistance, and N, P and K in the sludge can be used as nutrition matrixes for ecological growth, thus the ecological system of the riverway protection slope can be improved and a favorable riverway landscape is built.

The invention relates to a combined process for standard-meeting discharge of garbage percolate treatment, which takes a garbage percolate stock solution or a garbage percolate pretreated by an anaerobic regulating reservoir as a treatment object, and comprises the following steps: step one, the garbage percolate to be treated is treated by a multiple microporous carrier reaction bed film-formed with microorganisms to decompose organic substances in the garbage percolate; step two, the oxidation flocculation treatment is performed; and step three, the multistage filtration treatment is performed, the treatment fluid with CODcr less than 100mg/L is drained, and the multistage filtration comprises micro-filtration, fine filtration and reverse osmosis orderly. The process has low treatment cost, simple process, convenient equipment maintenance, strong anti-load capability, strong internal digestion power of metabolites, and small amount of sludge discharge, is suitable for garbage percolates with different concentrations and different discharge requirements, flexibly adjusts a program of process combination according to percolates, combines multiple high-efficiency single technologies, adopts different combination schemes, and ensures that the advantages of the single technology are better played.

The invention discloses a kitchen effluent treatment method which comprises the following steps: 1, firstly, immediately filtering kitchen effluent to separate solid waste from a liquid; 2, for the separated liquid, realizing separation of oil and water according to the difference of specific weights of oil and water; 3, disinfecting the waste water after the oil and water are separated, and then performing secondary filtration; 4, further deeply treating the sewage subjected to the secondary filtration and then discharging or recycling when the filtered sewage reaches the standard. The kitchen effluent treatment device has a structure that a solid and liquid separation chamber and an oil storage chamber are arranged in a sewage tank, a solid and liquid separation filtering box is arranged in the solid and liquid separation chamber and connected with a sewage pipe, a water outlet is formed in the lower part of the solid and liquid separation chamber and is communicated with a water storage chamber arranged at the lower part of the oil storage chamber, an oil overflow hole is formed in the upper part of the solid and liquid separation chamber, a filtrate layer is arranged between the oil storage chamber and the water storage chamber, and sewage of the water storage chamber enters a filtering pipe. According to the kitchen effluent treatment method and the kitchen effluent treatment device, kitchen effluent is dispersed and ecologically treated from the source, and thus the problem of new pollution caused by sludge and sediments in a conventional treatment method is avoided.

The invention discloses a tannery sludge and coal gangue treatment technology which comprises the steps of evenly mixing and stirring tannery sludge, coal gangue, cement, kaolin and sodium tetraborate which are evenly ball milled according to the mass ratio of 1 to 1 to 4 to 1 to1; then adding water to stir into slurry; utilizing sodium dodecyl sulfate as a foaming agent, pouring the stirred foam concrete into a mould, then conserving for 3 to 5 days in normal temperature in humidity larger than 80% and then demoulding; drying a demoulded product under the condition of 105+/-0.5 DEG C, putting into an electric furnace to be kept warm for 20 to 40min in 110 DEG C, then heating to 600 DEG C at 15 DEG C/min, keeping warm for 30 to 60min, then heating to 1100 to 1200 DEG C at 15 DEG C/min and sintering for 30 to 60min; slowly cooling to room temperature after sintering finishes and manufacturing into a porous ceramic tile.

The invention discloses a multifunctional organic fertilizer and a preparation method thereof. The multifunctional organic fertilizer comprises the following raw materials in parts by weight: 30-50 parts of silkworm litter, 3-8 parts of mulberry twig, 2-8 parts of pond sludge, 10-30 parts of lignite, 5-20 parts of grass carbon, 5-20 parts of rice bran, 3-10 parts of saccharomycete, 3-10 parts of Bacillus licheniformis and 50-300 parts of purified water. The organic fertilizer adopts a biological fermentation technology, and has the advantages of multiple functions, simple production process, low production cost, high fertilizer effect and quick action; the finished product contains a large amount of Bacillus licheniformis, Bacillus subtilis, Bacillus mucilaginosus, Bacillus megaterium, Bacillus amyloliquefaciens and actinomycete, has strong aerobic fermentation and decomposition capabilities, activates microorganism propagation, and can loosen the soil, enhance the soil productivity and adsorb residual heavy metal and other harmful toxin in the soil; and the organic fertilizer can be applied to various vegetables, fruit trees, Chinese medicinal herbs, tea, melons, fruits and the like.

The invention discloses a decanting-type waste muddy water recycling pool. The decanting-type waste muddy water recycling pool comprises a recycling pool body, wherein the recycling pool body is divided by a partition wall into a mud settling zone and a water collecting zone, the bottom wall of the mud settling zone gradually inclines towards the opposite side wall along the partition wall, a buoy-type decanting device and a vertical guide rail are arranged in the mud settling zone, the buoy-type decanting device is connected with the vertical guide rail in a sliding manner, a water outlet of the buoy-type decanting device is connected with a water guide pipe, and the water guide pipe is arranged in the partition wall in a sealing manner and extends to the water collecting zone; a muddy water inlet pipe is arranged in the mud settling zone, the side wall of the mud settling zone is provided with a sludge outlet pipe communicated with a sludge pump, and two side walls of the mud settling zone are respectively fixedly provided with a submarine-type sludge stirrer; and a secondary water outlet pipe communicated with a recycling water pump is arranged in the water collecting zone. The decanting-type waste muddy water recycling pool is simple in structure, relatively stable in water quality and water quantity of the recycled secondary water and relatively low in engineering cost and operation cost of equipment.

The invention relates to a method for recovering heavy metals in high-chlorine salt and high-acid wastewater, which belongs to the field of dangerous waste treatment and resource recycling. High-saltand high-acid wastewater undergoes hydrochloric acid resolution, adding medicine precipitation and calcium separation, neutralization and precipitation, acid-adding precipitation and zinc and lead separation, carbonate precipitation, residual heavy metal adsorption by exchange resin and evaporative crystallization, so that salt is obtained, and evaporative cooling water is used for washing metal precipitate sludge. After being treated by the method, wastewater is recycled, heavy metals are separated and recovered, crystallized chlorine salt can be adopted as a material for the chlor-alkali industry, bleaching in printing and dyeing and the like, and resource recycling of the heavy metal in the water is realized.

The invention provides a domestic sewage reuse apparatus. The apparatus comprises a shell, a water inlet and a water outlet, and also comprises a precipitation chamber, a disinfection chamber and a deodorizing chamber, the water inlet is positioned at the upper end of the precipitation chamber, a flocculant introducing device is arranged at one side of the water inlet, a first filter screen and a second filter screen are arranged in the precipitation chamber in parallel from top to bottom, a flow division member for dividing flow of sewage discharged into the water inlet is arranged between the water inlet and the first filter screen, an inclined plate for restricting the movement of sludge is arranged between the second filter screen and the bottom surface of the precipitation chamber, the precipitation chamber communicates with the disinfection chamber, ultraviolet lamp areas and water permeation areas are transversely alternately arranged in the disinfection chamber in parallel, the disinfection chamber is connected with the deodorizing chamber, and the connection is provided with a deodorizing agent introducing device.

The invention discloses a pretreatment device for wastewater reuse. The device comprises a shell, wherein a water inlet is formed at the upper end of the shell; a water draining pipe is arranged at the lower end of the shell; a reflux device is arranged on the water draining pipe; a second filtering film is arranged in the water draining pipe; a motor and a control switch are arranged on the upper surface of the shell; the motor is electrically connected with the control switch. The pretreatment device for wastewater reuse firstly treats the wastewater in the manner of multi-level filtering, can save time for the subsequent wastewater treatment and can prolong the service life of the related device in the subsequent treatment link; a sewage draining port which is capable of being manually opened and closed is formed on the device; the sewage draining port is under a closed state in a filtering process, so that the sewage can be more sufficiently filtered; the sludge in the sewage can be discharged after the filtering is ended, so that the preparation for the filtering at the next time can be made; a stirring device is arranged for continuously stirring the wastewater in a filtering process, preventing wastewater lamination and blocking, so that the filtering efficiency is increased; the reflux device is arranged for further increasing the efficiency of wastewater treatment.

Disclosed is a preparation method of a residual-sludge-based particle electrode carrier. The invention relates to resource treatment of solid waste of sludge, and the technical problem of a low utilization ratio of residual sludge is solved. The method comprises: 1, preparation of absolutely-dried sludge powder, 2, preparation of raw material balls; and 3, calcination. Residual-sludge ceramic particles are taken as the particle electrode carrier, and a catalyst of Sb-SnO2 is loaded on the surfaces of the residual-sludge ceramic particles by utilizing a pyrolytic process to form a particle electrode of residual-sludge-based sludge ceramic particles loaded with Sb-SnO2. By using the prepared porous residual-sludge ceramic particles, the disposal cost of sludge is reduced. The particle electrode carrier with excellent performance is formed by loading Sb-SnO2 on the residual-sludge ceramic particles. The residual-sludge-based particle electrode carrier is applicable to treatment of printing and dyeing wastewater, the treatment efficiency is improved, and the treatment cost of waste water is reduced. The method is used for preparing the residual-sludge-based particle electrode carrier.

The invention relates to a culture waste water energy self circulation disposal system and a method thereof. The system comprises a filter grid, a grit basin, a solid and liquid separation pool, a large-size methane anaerobic tank, an ammonia nitrogen air stripping tower, a dual section A-O reaction pool, a sludge pool, a methane purifier and a methane power generator; the filter grid, the grit basin, the solid and liquid separation pool, the large-size methane anaerobic tank, the ammonia nitrogen air stripping tower and the dual section A-O reaction pool are connected in sequence; the dual section A-O reaction pool is connected with the sludge pool; the large-size methane anaerobic pool is connected with the methane purifier connected with the methane power generator. The disposal system and method have the following advantages that 1, harmful pollutants such as COD and ammonia nitrogen in culture waste water can be effectively removed, so the emitted waste water achieves a national standard, and environment pollution is relieved; 2, a disposal process realizes energy self circulation, and a generated fertilizer can be used for agricultural planting and cost reduction.

The invention discloses a buried four-station-in-one purification treatment device for medical waste. The device comprises a household garbage throwing area, a medical waste classifying and packagingarea, a sludge lifting and drying treatment area, a foul gas treatment area and a sewage treatment area, wherein the household garbage throwing area is arranged at the upper end of the right side of the purification treatment device and is used for packaging household garbage; the medical waste classifying and packaging area is arranged on the left side of the household garbage throwing area and used for classifying and packaging metal, nonmetal and plastic garbage; the sludge lifting and drying treatment area and the foul gas treatment area are both arranged on the right side of the medical waste classifying and packaging area, and the foul gas treatment area is arranged on the front side of the sludge lifting and drying treatment area; and the sewage treatment area is arranged below thepurification treatment device and is used for collecting waste liquid and waste gas. According to the device, a medical waste gas station, a waste water station and a solid waste station which carry germs and viruses are integrated in the same device, so comprehensive treatment of waste gas, waste water and solid waste is realized; and the device has the advantages of reducing intermediate links,improving the medical environment and facilitating implementation and management.

The invention provides an oily sewage and sludge separation device, which comprises a reactor and a magnetic muddy water separator, wherein the reactor comprises a reactor tank body with a revolved structure; a first liquid inlet pipe is arranged on the side wall of the reactor tank body; a first liquid outlet is formed on the bottom of the reactor tank body; the magnetic muddy water separator comprises a separator box body; a disk shaft is rotatably arranged in the separator box body; at least one disk is fixedly connected to the disk shaft; a magnetic body is arranged on the disk; mud scraping boards are evenly arranged on two sides of the disk and are contacted and matched up with the side wall of the disk; and the first liquid outlet is communicated with the separator box body. The scheme is simple in structure, the sludge and sewage are reacted with agents in the reactor, flocculent precipitate is formed and then is discharged in the separator box body, and the precipitate is adsorbed on the disk to be separated from water, so that the removal rate and the removal efficiency of the precipitate are high, good water treatment effect is achieved, discharged water can reach A1 standard of national regulation, and the solid content of the removed precipitate is not less than 35%.