31results about How to "Recycling resources" patented technology

The invention provides a novel inorganic compound phosphoric polyferric sulfate flocculant and a production technology thereof. The flocculant can be used in both water treatment and sewage treatment thereby being multifunctional. The phosphoric polyferric sulfate of the invention takes the by-products generated in titanium pigment production, such as ferrous sulfate, phosphoric acid and the like for producing titanium pigment as raw materials thereby having the characteristics of utilization of waste products, simple components, low cost and the like. The production technology of the invention is convenient, has simple operation and can be carried out at normal temperature and normal pressure. In the production process, no liquid waste, waste gas and waste residue can be generated, and the production technology belongs to the cleaner production technology. The invention can be widely applied in water treatment and sewage treatment. Especially in water treatment, the phosphoric polyferric sulfate flocculant of the invention is added to effectively remove soluble phosphorus and phosphorus in other forms in water as well as algae in algae waste water, lower chemical oxygen demand (COD), total phosphorus (TP), suspended solid (SS), chlorophyll (chl-a) and the like.

The present invention is process of treating mother liquid residue from sodium formate method to produce sodium hyosulfate and after being rectified to recover methanol. The process includes the following steps: 1. concentrating to obtain concentrated residue with or without sodium formate recovery; 2. incinerating the concentrated residue in a converter or one combined furnace to obtain incinerated clinker; 3. discharging high temperature clinker; 4. dissolving the clinker to form water solution; 5. absorbing SO2 from the incinerating fume with the water solution; and 6. adding sulfur to the absorbed solution to prepare sodium thiosulfate. The process can eliminate pollutant while producing sodium thiosulfate as chemical material.

The invention relates to a zinc sulfide base mercury adsorbent for flue gas zero-valent mercury capturing and a preparation method of the zinc sulfide based mercury adsorbent. The adsorbent is a cobalt-doped zinc sulfide mercury adsorption material CoxZn1-xS, in the formula, x represents the stoichiometric ratio of cobalt in a solution, and the stoichiometric ratio is 0.1-0.3. The preparation method comprises the following steps: (1) dissolving a cobalt salt and a zinc salt of a certain mole ratio into deionized water so as to obtain a mixed solution; (2) mixing and stirring the mixed solutionwith a precipitant; (3) putting a suspension liquid into a reactor, and carrying out heating treatment on the reactor in a baking oven; (4) repeatedly washing the obtained precipitate with deionizedwater, and drying, thereby obtaining the zinc sulfide based mercury adsorbent. Compared with the prior art, the preparation method is wide in raw material source, simple and controllable in preparation process and gentle in reaction condition, and the prepared adsorbent has a mercury adsorption capability which is improved by dozens of times when being compared with pure zinc sulfide, in additionhas a very good anti-SO2 influence property, is capable of maintaining certain high activity within a long time, and is particularly applicable to adsorption and removal of zero-valent mercury in a metallurgical flue gas.

The invention relates to a high calcium organic wastewater treatment method, which comprises: mixing industrial wastewater containing 0.1-20% by mass of organic calcium carboxylate and an inorganic acid according to a molar ratio of 1:1-1:0.2, carrying out an acidification reaction at a temperature of 50-90 DEG C, and separating the resulting mixed material to obtain an inorganic calcium salt crude product; carrying out a liquid-liquid extraction reaction on an aqueous solution containing the organic carboxylic acid and a small amount of the inorganic calcium salt compound to generate an organic carboxylic acid complex having a boiling point of more than a boiling point of the organic carboxylic acid; and carrying out pressure reduction distillation on the upper layer material containing the organic carboxylic acid complex, collecting a distillate with a gas temperature of 60-100 DEG C, and carrying out nature sedimentation separation on the distillate, wherein an organic carboxylic acid aqueous solution with a mass fraction of 20-85% is obtained from the lower layer, and the upper layer material is mixed with the residual liquid on the bottom of a pressure reduction distillation kettle to obtain a recycled extraction agent. The method has characteristics of simple process, less raw material consumption, high yield, high production efficiency, easy reaction process enlargement, and source re-utilization achievement.

The invention discloses a hazard-free environment-friendly treatment process for reducing and recycling waste rubber, plastic and domestic garbage, which aims to solve the problem of difficulty in treatment of the waste rubber, the plastic and the domestic garbage. The process comprises the following steps of: classifying the waster rubber, the plastic and the domestic garbage, and putting into apyrolysis device and a waste heat boiler; feeding a gaseous product generated by the pyrolysis device into a separation device, and separating to obtain fuel oil and combustible gas; collecting a residual object, namely carbon black in the pyrolysis device; feeding the combustible gas into the pyrolysis device and the waste heat boiler for combustion; feeding flue gas exhausted from the waste heat boiler into a shock cooling device; and purifying by using a purification device, and emptying. The treatment process is easy to operate and control, pyrolysis and combustion are integrated, resources can be effectively recycled, and the problem of secondary pollution of waste gas and waste water is solved synchronously.

The invention discloses a waste liquid treatment recycling system of a stainless steel pickling line. The waste liquid treatment recycling system mainly comprises a regulating reservoir, a precision filter, a neutralizing oxidation pond, an oblique pipe precipitation pond, a sludge concentration pond, a sludge storage pond, an air floatation pond, a press filter, a medium filter, an active carbon filter and a clean water pond, and is characterized in that pickling waste water flows into the regulating reservoir, the regulating reservoir is connected with the precision filter, the precision filter is connected with the neutralizing oxidation pond, the neutralizing oxidation pond is connected with the oblique pipe precipitation pond, the oblique pipe precipitation pond is connected with the sludge concentration pond, the sludge concentration pond is connected with the sludge storage pond, the sludge storage pond extends in two circuits, one circuit is connected to an external mud cake transport device by virtue of the press filter, and the other circuit is connected to a clean water discharge pipe sequentially by virtue of the air floatation pond, the medium filter, the active carbon filter and the clean water pond.

The invention discloses a wood-plastic material prepared from papermaking waste. The wood-plastic material comprises the following components in percentages by mass: 30% to 35% of papermaking waste, 30% to 40% of wood flour, 15% to 20% of ceramic powder, 1% to 5% of sorbitol, 1% to 3% of a silane coupling agent, 3% to 6% of maleic anhydride grafted polyethylene, 1% to 2% of aluminum chloride, 3% to 5% of poly ethylene glycol monomethyl ether and 1% to 2% of blocking isocyanate. Firstly, the silane coupling agent, maleic anhydride grafted polyethylene and aluminum chloride are added and mixed,the aluminum chloride is beneficial for uniform mixing of the raw materials, and in combination with the adding sequence of the raw materials, the modification effect of each accessory ingredient on plastic, wood flour and ceramic powder can be strengthened; the sorbitol is further added as an activation modifier, and is matched with the blocking isocyanate and poly ethylene glycol monomethyl ether, so that modification on the wood four and ceramic powder can be realized sufficiently, the interfacial compatibility among the wood flour, ceramic powder and plastic is improved, and the performance of the wood-plastic material is strengthened.

The invention discloses a coal mine heading face boring exploration protection device comprising a substrate and self-locking universal wheels arranged on two sides of the substrate bottom; the substrate is provided with a first vacuum tank and second vacuum tanks; a work platform is arranged on top of a vertical rod; a drilling machine body is arranged on top of the work platform; a position, close to a drill bit, on one side of the work platform is provided with a cover plate; a guide tube connected with the first vacuum tank is arranged on the bottom of the cover plate, and provided with asolenoid valve; the first vacuum tank and the second vacuum tank and the second vacuum tanks are respectively connected via breather pipes; a dust filter net is arranged in middle position in the first vacuum tank. The protection device can provide good protection and shield effects, can fast absorb and gather leaking gas and dusts formed in boring into the vacuum tanks, thus reducing gas and dustleakage, recovering gas resources, and reducing dust damages.

The invention discloses a chroming mist recycling method. A pure physical method is adopted for absorbing chroming mist generated in an electroplating production process into serially connected recycling treating units through a notch fan cover and then performing the processes of diffusing, colliding, coring, agglomerating and settling, so that the chroming mist is stopped and absorbed to the surfaces of a baffle plate and a filling material, and meanwhile, the chroming mist is intermittently and circularly flushed back to the present collecting tank, so that the chroming mist is intercepted, captured and recycled. No wastewater is discharged in the whole process, so that the purpose of environment-friendly emission of the chroming mist is achieved.

The invention discloses a chromium plating fog recovery and purification device, and belongs to the technical field of chromium plating waste gas recovery processing technology. The chromium plating fog recovery and purification device includes a chromium fog channel, the chromium fog channel is formed by a plurality of stages of recovery and purification chambers, the plurality of stages of recovery and purification chambers are connected in series in turn, and are communicated with a chromium plating bath and a fan for pumping air. Each recovery and purification chamber comprises a condensing chamber and a recovery water tank, the upper part of the condensing chamber is provided with a spraying device, the recovery water tank is located below the condensing chamber, and the recovery water tank is correspondingly communicated with the condensing chamber, and a next-stage recovery water tank supplies water for the spraying device of a front-stage recovery and purification chamber. The plurality of stages of recovery and purification chambers are used for physical interception of chromium fog in the chromium plating bath, and the whole recovery and purification process is free of wastewater discharge and physical maintenance.

The invention discloses a nitrile group type carbon fiber precursor spinning pretreatment process. According to the technical scheme, the process includes the following steps that 1, nitrile group type carbon fiber precursors are subjected to continuous mold pressing curling forming at normal temperature; 2, the nitrile group type carbon fiber precursors obtained in the step 1 are added to a shaping furnace and instantly heated to the shaping temperature in a vacuum state, the vacuumizing time ranges from 5 min to 45 min, achieved negative pressure ranges from 3,000 pa to 5,000 pa, temperature rise time ranges from 5 min to 45 min, and the achieved temperature ranges from 90 DEG C to 150 DEG C; 3, under the condition of the step 2, dry hot gas is instantly injected into the shaping furnace, and the obtained nitrile group type carbon fiber precursors are shaped. The purposes that non-superior products generated in the existing carbon fiber precursor production process are reused, and waste and environmental pollution are reduced are achieved.