37results about How to "Achieve resource recycling" patented technology

The invention relates to a defluorination and dephosphorization method of PSRY molecular sieve production wastewater. The method comprises the following steps: (1) solid waste residues generated during treatment process of PSRY molecular sieve production wastewater and other molecular sieve production wastewater are mixed, and aluminum in the solid waste residues is dissolved in the form of Al<3+> in the wastewater, wherein pH value of the mixed system during the dissolution process is less than 4.5; (2) pH value of the mixed system obtained from the step (1) is adjusted to more than 6 to make Al<3+> reacts with F<-> and PO4<3-> so as to fully precipitate F<-> and PO4<3->; and (3) a coagulant aid is added into the mixed system obtained from the step (2), and solid-liquid separation is carried out on the mixed system which has undergone coagulantion enhancement, wherein dosage and dissolution conditions of the solid waste residues in the step (1) enable Al<3+> in the step (2) to fully precipitate F<-> and PO4<3->. By the method, fluorine and phosphor in the PSRY molecular sieve production wastewater can be effectively removed.

The invention discloses a high-quality pavement petroleum asphalt material and a preparation method thereof, belonging to the pavement engineering material technical field. The petroleum asphalt material is prepared from the raw materials according to the parts by weight: 80-95 parts of main asphalt, 5-20 parts of formulated asphalt, 0.01-2 parts of macromolecular crosslinking agent and 0.001-0.25 part of heat stabilizer. The invention adopts chemical crosslinking, heat stabilizer and the combination of cutting and milling to promote the matching of the four components of asphalt to be further optimized and develop in the direction of forming stable colloid structure, improving the pavement performance of the formulated asphalt material and increase the stability of the formulated asphaltproduct. The invention makes full use of the vacuum residue of residual oil and heavy crude which are treated through vacuum deep extraction and increases the use value so as to reach the effect of resource recycling and environmental protection.

The invention relates to a method for utilizing alkaline etching waste liquid in a printed circuit board to prepare nano-copper which is made into nano-copper conductive slurry. The method comprises the following steps: filtering alkaline etching waste liquid, adding a nonionic surfactant of 0.43%-4.24% of alkaline etching waste liquid by weight and an aqueous antifoaming agent of 0.08%-1.61% of the alkaline etching waste liquid by weight, preparing a reaction solution A; preparing a reducing agent solution B which comprises a reducing agent of 1.70%-8.49% of the alkaline etching waste liquidby weight, a highly basic substance of 6.80%-10.20 % of the alkaline etching waste liquid by weight, and organic phase turpentine which is used for a phase-transfer agent and has a volume ratio of 1:1-1:2 to the alkaline etching waste liquid; carrying out heating and stirring, and adding the reaction solution A in to the reducing agent solution B drop by drop. The method has the characteristics of easy operation and small energy consumption, prepared nano-copper powder has good antioxidation performance, by utilizing the etching waste liquid, conductive slurry of a high added value is prepared, a high economic benefit is created, emission reduction and no pollution of waste water are realized, and resource recycling is achieved.

The invention relates to a method for recycling silver powder ammonia prepared by hydrazine hydrate reaction. The method comprises the following steps of: obtaining a mixed solution I of silver powder and ammonia-containing mother liquor after hydrazine hydrate reaction, and heating the mixed solution I to obtain mixed solution II of ammonia gas, silver powder and the ammonia-containing mother liquor; absorbing ammonia gas for recycling the mixed solution I by a silver nitrate solution, using the silver nitrate solution which absorbs the ammonia gas in next hydrazine hydrate circular reaction, and separating silver powder from ammonia-containing mother liquor for the mixed solution II to obtain silver powder IV and ammonia-containing residual liquor III; and carrying out steam stripping on silver powder IV to remove residual ammonia on the surface of silver powder to obtain sliver powder V, absorbing stripped ammonia gas by a silver nitrate solution, and using the silver nitrate solution which absorbs the stripped ammonia gas in next hydrazine hydrate circular reaction. According to the method, an environmental protection and control technology is combined with a chemical process technology, so that cyclic utilization of ammonia is directly realized, and reclamation, reduction and hazard-free treatment of ammonia in wastewater are achieved, and therefore, the environment is protected, and resources are saved.

The invention discloses a set of concrete production environmental protection equipment and a concrete production process. The set of concrete production environmental protection equipment comprises a DCS central control system and a remote monitoring system, wherein the DCS central control system controls an aggregate production line, a cement and mineral powder production line, a cement kiln sludge processing equipment, raw material processing domestic garbage equipment and concrete mixing plant equipment to produce concrete through a control signal; and the remote monitoring system is connected with and monitors the aggregate production line, the cement and mineral powder production line, the cement kiln sludge processing equipment, the raw material processing domestic garbage equipment and the concrete mixing plant equipment through optical fibers. With adoption of the set of concrete production environmental protection equipment, the concrete production process can be carried out. The set of concrete production environmental protection equipment has the advantages that no dusts, not leakage and no secondary pollution and transportation are generated due to full-automation sealing production, the energy is saved, the environment is protected, environmental pollution of atmosphere and soils is reduced, toxic and harmful substances are prevented from damaging human health through processing, and the economic benefit in virtuous circle and the value-added effect of the building material industry are reached.

The invention discloses a humidity-adjusting coating and a manufacturing method thereof. The humidity-adjusting coating comprises a 30% by weight functional material, a 62.5-67.5% by weight mixture, and a 2.5-7.5% by weight silicon Sodium acid; wherein, the functional material includes 20-60% by weight of inorganic sludge, 35-65% by weight of gypsum hemihydrate, and 5%-25% by weight of inorganic minerals, and the above-mentioned inorganic The sludge contains at least 90% by weight of amorphous silicon dioxide; in addition, the mixture contains a water-soluble resin and water, and the mixing ratio of the water-soluble resin to the water is 1:(2~3); therefore , the humidity-adjusting coating formulated by the above materials has high moisture absorption and release effects, high antibacterial rate, and also solves the problem of inorganic sludge burial, effectively converts waste into high-value materials, and effectively achieves The effect of resource recycling.

The invention discloses a method for treating leachate from waste incineration plants. The method comprises the following steps: (1) anaerobic treatment: carrying out anaerobic treatment on the leachate from the waste incineration plants by means of an upflow anaerobic sludge blanket (UASB) so as to obtain treated liquid I; (2) softening treatment: adding a softening agent into the treated liquidI, carrying out chemical softening treatment, and then filtering by using a tubular micro-filtration membrane (TMF) so as to obtain treated liquid II; (3) deamination treatment: pumping the treated liquid II into a negative pressure ammonia distillation tower, and introducing steam into the tower for carrying out deamination treatment so as to obtain treated liquid III; (4) membrane advanced treatment: cooling the treated liquid III to 35 DEG C or below, then adjusting the pH value to 6-7, and filtering by means of a disk tubular reverse osmosis (DTRO) membrane so as to obtain produced water.According to the method, the leachate from the waste incineration plants is treated by using a combined process of pretreatment, anaerobic treatment, TMF softening, deamination treatment and membraneadvanced treatment, so that ammonia nitrogen, total nitrogen and organic matters in the leachate can be effectively removed, and the produced water is enabled to meet requirement of up-to-standard discharge or to be recycled.

The invention discloses a high-modulus modifier composite of a bituminous mixture and a preparation method thereof. The high-modulus modifier composite of the bituminous mixture comprises the following components in parts by weight: silica powder, thermoplastic butadiene styrene rubber, modified polyethylene, polyethylene, modified polypropylene, polypropylene, ethylene-vinyl acetate polymers, antiagers and bitumen. The preparation method of the high-modulus modifier composite of the bituminous mixture comprises the following steps of: weighing the components in the parts by weight according to a proportion; stirring the components, and raising temperature at the same time; then adding the silica powder, the antiagers and the bitumen to a molten mass, and stirring for uniformly mixing at 160-200 DEG C and under certain rotating speed; extruding through a screw extruder, cooling with normal temperature water, and cutting so as to obtain granular finished products. The invention enhances the elastic modulus, improves the adhesive property, enhances the high-temperature anti-rutting property, the water stable property and the ageing-resistant performance, obviously reduces the damages, i.e. rutting, process, bumps, cracks, pits, looseness, and the like, of bituminous pavements, has the advantages of simple processing process, prolonged service life and convenient use, omits a process link of modifying the bitumen and can be widely used for paving the bituminous pavements of roads.

A treating method of fluorine-containing waste water is disclosed. The fluorine-containing waste water comprises F-, SO4<2-> and Al<3+>. The method includes: adjusting the pH value of the fluorine-containing waste water to be not lower than 5 so as to subject the F- to neutralization and sedimentation reactions; bringing the fluorine-containing waste water after the neutralization and sedimentation reactions and coagulant aids into contact; separating solid and liquid to obtain first sludge and a first liquid phase; bringing the obtained first liquid phase and an aluminum-containing compound capable of adsorbing the F- in the waste water into contact to perform coagulating sedimentation; separating liquid and solid to obtain second sludge and a second liquid phase; bringing the obtained second liquid phase and coagulant aids into contact; and performing liquid-solid separation to obtain third sludge and discharged treated water. The method can perform effective fluorine removal treatment for the fluorine-containing waste water having high contents of the F-, the SO4<2-> and the Al<3+>.

The invention relates to a garbage coarse processing system. The system involves a garbage dispersing device, wherein the garbage dispersing device is used for dispersing garbage, and an outlet of thegarbage dispersing device is connected with a rolling vibration device; the rolling vibration device is used for dividing the garbage into two types of garbage, the rolling vibration device is provided with two falling ports, and the two falling ports are used for exporting the two types of garbage correspondingly; the first falling port of the rolling vibration device is connected with a feedingport of a garbage compression device in an engagement mode, and the garbage compression device is used for compressing and pressing the first type of garbage; and the second falling port of the rolling vibration device is connected with a garbage classification device, and the garbage classification device is used for further sorting recyclable plastic and metal garbage in the second type of garbage, so that the coarse processing system can effectively realize sorting and classification processing on the garbage, reduce pollution, and achieve resource recycling as much as possible.

The invention discloses a recycling treating device for flowback pressure liquid in shale gas well fracturing operation. The recycling treating device comprises a wastewater pool, a regulation pool, a composite coagulation reaction device, a settling pool, a solid-liquid separation device and a clean water pool which are sequentially connected to one another by virtue of a pipeline, wherein the composite coagulation reaction device consists of a rapid stirring pool, a slow stirring pool and an oxidation pool which are sequentially connected to one another by virtue of a pipeline, and the upper ends of the regulation pool, the rapid stirring pool, the slow stirring pool and the oxidation pool are all connected with a corresponding drug adding device by virtue of a constant-flow pump; the solid-liquid separation device consists of a crude filter and double-filtering equipment which are sequentially connected to one another by virtue of a pipeline, the crude filter is connected with a sludge pump by virtue of a fourth valve, the double-filtering equipment is also connected with the sludge pump, and the sludge pump is connected with a sludge dewatering machine. With the adoption of the recycling treating device, as the bottoms of the regulation pool, the rapid stirring pool, the slow stirring pool and the oxidation pool are all provided with stirrers, the problem of water resource challenge brought by shale gas development can be effectively solved, resource cyclic utilization is reached, and zero emission of flowback liquid caused by shale gas fracturing can be truly realized.