35results about How to "Reduce the cost of purification treatment" patented technology

The invention relates to the technical field of sewage treatment, in particular to a pre-treatment method for eliminating or reducing siloxane and color materials in biogas. The method comprises the following steps: firstly making sludge enter into a concentration regulation pool; adjusting the concentration of the sludge; dividing the adjusted sludge into two portions, wherein one portion of the sludge directly enters into an anaerobic digestion tank and the other portion of the sludge is pre-treated firstly and then enters into the anaerobic digestion tank to perform anaerobic digestion reaction in the anaerobic digestion tank; making the produced biogas enter into a biogas storage tank, desilicating the biogas, and finally removing the siloxane in the biogas and making the biogas enter into a biogas utilization device. By adopting the technical scheme, the siloxane and color materials in the biogas are eliminated or reduced, the biogas utilization device is protected, the biogas purification treatment cost and the maintenance cost of the biogas utilization device are reduced; the intelligent analysis and control are realized, and the technical advantage and market acceptability of the sludge anaerobic digestion process technology are expanded.

The invention relates to a full-automatic silver powder centrifugal filtering and washing device and a silver powder washing method, wherein the device comprises an engine base (1), a housing which is installed on the engine base and a cover (6) which is mounted on the top of the housing. The method provided by the invention realizes full automation for washing and filtering silver powder, improves the electrolytic silver powder washing efficiency, reduces production cost and improves metal recovery.

The invention relates to a low-sulfur large-grained salt produced from sodium sulfate type salt mine and a preparation method thereof. Liquid calcium from ammonia alkali factory is blended with water and injected into sodium sulfate type salt mine for underground desulfurization to form high calcium brine, and the high calcium brine as a raw material is subjected to salt calcium coproduction to produce low-sulfur large-grained salt by using an MVR (mechanical vapor recompression) evaporator with a crystal cultivation baffling cylinder and a unique production process. The product comprises not less than 99.50% of sodium chloride (dry basis), no more than 0.2% of sulfate radical, more than 70% of granularity greater than 0.4 mm, and no more than 1% of granularity less than 0.15 mm; the product does not contain any anti-caking agent, and has anti-caking period more than 4 months, so as to meet the needs of industrial production turnover.

The invention discloses a method for purifying internal combustion engine exhaust particles. The method comprises the following steps: S1, enabling internal combustion engine exhaust to unidirectionally flow through a particle collection channel, wherein the particle collection channel is a hollow cavity; S2, pressurizing water in a water tank to form a pressure water column and injecting the water column into the particle collection channel, wherein an injection of the pressure water column is orthogonal to a flow direction of the internal combustion engine exhaust; S3, collecting wastewaterobtained after contacting the pressure water column and the internal combustion engine exhaust, determining light transmittance of the wastewater and feeding the wastewater into the water tank; renewing the water in the water tank when the light transmittance is less than a set value, and returning to the S2, otherwise directly returning to the S2. The invention further discloses a device for purifying the internal combustion engine exhaust particles. According to the method disclosed by the invention, the internal combustion engine exhaust can be continuously purified, and the exhaust particles are adsorbed. Moreover, the purification device does not need to be subjected to high-cost regeneration treatment, and the device is low in using cost, low in energy consumption, clean and environmental-friendly.

The invention provides a resourceful treatment method for copper slag of a nickel refining system. The method comprises the following steps that the copper slag is washed with water, and washing liquid is merged into the nickel refining system; Cu <2+> is added to the copper slag which is cleaned for the first time, then normal-pressure air leaching is carried out after a leaching solution is subjected to slurrying, wherein the leaching solution is obtained after pressurized oxygen leaching, and the leaching solution is merged into the nickel refining system; and leaching slag is added to a sulfuric acid solution, oxygen is introduced to carry out the pressurized oxygen leaching, the leaching slag is used as copper concentrate to return to a copper smelting system, and the leaching solution is returned to be subjected to the normal-pressure air leaching. According to the method, copper, nickel and cobalt in the copper slag can be effectively separated, and the resourceful and comprehensive recycling of the nickel, the copper and the cobalt can be realized, the principle is reliable, the process is short, the resource utilization rate is high, and the industrial production is easy to realize; and the method is especially suitable for the treatment of the copper slag of the nickel refining system.

The invention relates to a gas combustor which comprises a housing. A combustion chamber is formed inside the housing. The housing is square and is provided with an air nozzle and a fuel gas inlet which are communicated with the combustion chamber. A first burner and a second burner are arranged on the left and right sides of the housing respectively. The first burner is arranged on the same side with the fuel gas inlet and is located below the fuel gas inlet. At least one air retaining wall for separating the first burner from the second burner is arranged in the combustion chamber, and the air retaining walls are lower than the combustion chamber. A high temperature fuel gas flue is reserved between the ends of the air retaining walls and the inner walls of the housing. Two-stage combustion is adopted, so that it is guaranteed that fuel gas burns sufficiently. Due to cooperation of the two burners and the air retaining walls, the flowing path of fuel gas in the combustion chamber is changed so as to prolong the residence time of fuel gas in the combustion chamber; the contact time of fuel gas and flame nozzles of the two burners is prolonged, so that the combustion ratio is high, and the cost for later purification treatment is reduced. The gas combustor is simple in overall structure and environmentally friendly, and saves energy.

The invention discloses a purification treatment device for recycling sewage, which comprises a filter and a deslimer, the water outlet of the filter is connected with the water inlet of the deslimer, the filter comprises a filter box and a filter set in the filter box The filter assembly and the receiving assembly for receiving garbage; the filter assembly includes two horizontally oppositely arranged first rotating rods and a filter plate arranged between the two first rotating rods, the first rotating rod is rotatably connected with the filter box, and the filter The plate is hinged sequentially by multiple screen plates, the distance between the two first rotating rods is less than the length of the filter plate after flattening, the top of the filter box is provided with a driving piece for lifting the filter plate; the receiving component is provided with two sets of , two sets of receiving components are respectively located on both sides of the filter plate. The application has the effect of realizing continuous filtration of sewage to improve the filtration efficiency of sewage and preventing the mesh holes on the filter plate from being blocked by suspended matter such as algae.

The invention discloses a special water purifying agent for wastewater treatment, which comprises the following raw materials in parts by weight: 10-20 parts of bentonite, 15-25 parts of kaolin, 8-14 parts of modified attapulgite, 6-12 parts of aluminum hydroxide, 5-10 parts of sodium hydroxide solution, 6-11 parts of hydrochloric acid, 7-13 parts of activated fly ash, 3-7 parts of calcium carbonate, 2-5 parts of alum, 3-8 parts of yam, 5-9 parts of activated carbon, 0.2-0.6 parts of hydrogen oxide, 0.3-0.7 parts of pore-enhancing agent, 1-2 parts of dispersant, 1-2 parts of bactericide and an appropriate amount of water; wherein, the activated fly ash is mixed with ordinary fly ash and potassium fluoride homogeneous, and then placed in a high-temperature environment for roasting; the mass fraction concentration of the sodium hydroxide solution is 30%. The special water purifying agent for wastewater treatment has a scientific and reasonable formula, good purification performance, low cost and good stability, and can be used in large-scale industrial production.

The invention discloses a method for incineration treatment of domestic waste, relating to a method for processing waste, which solves the problem of high purification treatment cost for smoke gas which is generated after incineration in the prior art. The method for incineration treatment of domestic waste comprises the following steps of: 1. incinerating; 2. deacidifying and dust-removing exhaust fume of the incinerating; 3. feeding smoke gas which undergoes the dust removal into a vertical kiln for secondary incineration; 4. post processing the smoke gas after the secondary incineration, and discharging into air. The method for incineration treatment of domestic waste also comprises the step of burning sufficiently unburnt organic pollution pollutant in the vertical kiln at a temperature of between 1400 and 1700 DEG C and further purifying the pollutant in the smoke gas by using humid green pellets in the middle section and the upper section of the cement vertical kiln. The domesticwaste is processed by the method, the index of exhausted gas is better than Standard for Pollution Control on the Municipal Solid Waste Incineration in China (GB18485-2001), at the same time, the purification treatment cost for the smoke gas is reduced greatly.

The invention discloses a process for deep purification and impurity removal of wet zinc leaching liquid. The process uses zinc sulfide solution to carry out deep purification and removal of impurities on wet zinc leaching liquid, wherein the zinc sulfide solution is purified and contains zinc sulfate Houli and barium sulfide are prepared as raw materials through metathesis reaction, and barium sulfide is prepared from barium sulfate through reduction reaction. In the process of the present invention, the zinc leaching solution to be purified is treated with the zinc sulfide solution as an impurity removal agent, and the sulfide ion released from the zinc sulfide reacts with heavy metal ions such as Cu, Cd, and As in the zinc leaching solution to precipitate in the form of precipitation. Purification and removal of impurities in zinc liquid has the advantages of low processing cost, environmental protection, low zinc loss rate, and good purification effect. It can realize deep purification and removal of impurities in wet zinc leaching liquid. A new impurity removal process for thoroughly purifying wet zinc leaching solution has high use value and good application prospects.

The invention proposes a construction method of a pond culture circulating water system, including the construction of the culture system and the circulation of water: the culture system includes a purification pond and several cultivation ponds, the purification pond is located in the middle of the cultivation system, and several cultivation ponds are distributed in the purification On the opposite sides of the pool, there are water purification equipment, the first purification area and the second purification area in the purification pool in sequence from left to right; there is a return water storage tank outside the breeding system, and a circulating water pipeline is set on the outer circumference of the breeding system , the circulating water pipeline is provided with a sluice, a water inlet and a water outlet, the water inlet and the water outlet are respectively arranged on both sides of the sluice, the water inlet is provided with a water inlet valve, and the water outlet is provided with a water outlet valve. The circulating water pipeline and the purification tank are connected, and the outlet branch pipe and the water inlet branch pipe on the same culture pond are arranged at the bottom of the culture pond oppositely; the purification pond is connected with the circulation water pipeline through a drain pipe, and a control valve is arranged on the drain pipe. The invention has high efficiency, less investment, low energy consumption, good applicability and high operability.

The invention discloses a method for treating high-arsenious solution with low cost, belonging to the technical field of hydrometallurgy and environment protection. Soluble salt containing bivalent copper is added to high-arsenious solution whose gross arsenic content is greater than 0.5g / l according to weight ratio of As / Cu<2+>=5-6 under the condition that PH value is 5-6 and temperature is 15-60 DEG C, and air is continuously blown in to ensure the solution writhes for 2-3 hours for oxidation. The soluble salt containing bivalent copper is preferably CuSO4. The invention has the following beneficial effects: 1. added Cu<2+> only performs the catalyzing function of oxidizing trivalent arsenic into pentavalent arsenic, so adding amount is small, and zinc power, scrap iron and the like canbe used for replacing and recovering after precipitation and dearsenization; 2. as air is continuously blown in, oxidation dearsenization is a continuous process, and oxidation dearsenization stops until needed purification depth is achieved, so that operation is simple and easy to realize; 3. the purification treatment cost of arsenic is greatly lower than that of other oxidant methods; 4. compared with hydrometallurgy that Fe(OH)3 is used to adsorb arsenic for coprecipitation, the invention has the advantage that the loss of other valuable metal in slag is lowered by about 10%.

The invention discloses a preheating system for a blocky raw material for production of rock wool, basalt fibers or glass. The preheating system comprises a kiln, a material cabin and a feeding machine, wherein the material cabin is internally provided with a hot air distributor and an exhaust chimney; the upper end of the exhaust chimney extends outside the material cabin; an exhaust hole is formed in the upper end; the lower end of the exhaust chimney extends into the bottom of the material cabin; an air inlet is formed in the bottom; the hot air distributor is arranged in the middle of thematerial cabin and is communicated with a high-temperature exhaust chimney at the arch top of the kiln; a raw material inlet is formed in the top of the material cabin; a raw material outlet is formedin the bottom of the material cabin; the raw material outlet is communicated with the inlet of the feeding machine through a discharge valve; and the outlet of the feeding machine is communicated with the inlet of the kiln. By adopting the preheating system, a high-temperature flue gas of the kiln is recycled, the blocky raw material is preheated by using waste heat of the high-temperature flue gas, the primary temperature of the blocky raw material fed into the kiln is increased, and energy consumption of the kiln can be thus greatly reduced.