34results about How to "Solve secondary environmental pollution" patented technology

The invention relates to a tray type stereoscopic organic material fermentation system and fermentation method. The fermentation system comprises tray loading equipment, tray stackers, tray unstackers and tray-dumping unloaders which are mounted sequentially as well as rolling equipment mounted on the tray loading equipment, tray conveying equipment connected among the tray loading equipment, the tray stackers, the tray unstackers and the tray-dumping unloaders and fermentation trays moving and circulating among the tray loading equipment, the tray stackers, the tray unstackers and the tray-dumping unloaders through the tray conveying equipment. Organic materials are loaded in the fermentation trays by the tray loading equipment, the fermentation trays are conveyed to the tray stackers by the tray conveying equipment to be stacked to form a tray stack, the organic materials are subjected to aerobic fermentation in the fermentation trays stacked in the tray stack and conveyed to the tray unstackers through the tray conveying equipment, the fermentation trays are taken out from the tray stack, the trays are conveyed to the tray-dumping unloaders by the tray conveying equipment, the materials are poured out from the fermentation trays, and the empty fermentation trays are conveyed back to the tray loading equipment by the tray conveying equipment.

The invention provides a method for producing an organic fertilizer by using sugar refining filter mud and bagasse. The method comprises the steps of blending the sugar refining filter mud, of which the weight ratio is 90.01-99.9%, and the bagasse, of which the weight ratio is 0.1-9.99%, so as to form a filter mud fermentation material, then, putting the filter mud fermentation material on three-dimensional fermentation equipment, of which the vertical direction comprises 2-40 layers and the horizontal direction comprises 2-40 belt conveyors, carrying out aerobic fermentation, carrying out composting and dehydrating, so as to obtain well-composted organic raw materials, then, applying the well-composted organic raw materials directly as an organic fertilizer, or producing various organic fertilizer products in a manner that the well-composted organic raw materials are matched with macro-, medium- and micro- nutrient elements essential to plants. The method provided by the invention can be used for effectively utilizing the sugar refining filter mud and the bagasse and is good in fermentation effect and small in floor area, meanwhile, secondary pollution resulting from bad smell can be avoided, and the aims of high efficiency and environment-friendliness are achieved.

The invention provides an energy-saving and environment-friendly method for treating municipal sludge. The method comprises the following steps: doping municipal sludge with a water content of 70-85% with a regulation material with a certain weight proportion to form a fermented sludge material, and then placing the fermented sludge material on three-dimensional fermentation equipment for dynamic aerobic fermentation, wherein the three-dimensional fermentation equipment is composed of 2-40 layers in the vertical direction and 2-40 groups of belt conveying mechanisms in the horizontal direction, and a rotten dry material which is dried to a water content lower than 50% by biological dehydration is used in further environmental protection treatment or resource utilization. The method provided by the invention is simple, small in occupation area and good in fermentation effect, meanwhile, secondary pollution caused by bad smell can be avoided, and the purposes of high efficiency and environmental friendliness are achieved.

The invention relates to a stainless steel hot rolling strip steel acid pickling process. The process comprises the steps of scale breaking unit scale removal pretreatment, wherein the total extensionrate of strip steel is controlled to be larger than or equal to 3.0%; first-segment hydrochloric acid acid pickling, wherein the strip steel is immersed in first-segment hydrochloric acid acid pickling liquid to be subjected to first-segment hydrochloric acid acid pickling, the hydrochloric acid concentration of the first-segment hydrochloric acid acid pickling liquid is controlled to 50 to 300 g/L, the iron ion concentration is controlled to 5 to 100 g/L, the temperature is controlled to 60 to 80 DEG C, and the acid pickling time is controlled to 25 s to 50 s; second-segment hydrochloric acid acid pickling, wherein the strip steel is immersed in second-segment hydrochloric acid acid pickling liquid to be subjected to second-segment hydrochloric acid acid pickling, the hydrochloric acid concentration of the second-segment hydrochloric acid acid pickling liquid is controlled to 50 to 250 g/L, the iron ion concentration is controlled to 5 to 100 g/L, the temperature is controlled to 50to 75 DEG C, and the acid pickling time is controlled to 25 s to 50 s; grinding scrubbing, wherein the strip steel is subjected to grinding scrubbing, the diameter of roller brush bristles is controlled to 0.7 to 1 mm, the bristles contain silicon carbide abrasives with meshes being 170 to 200 meshes, the rotating speed of a roller brush motor is controlled to 600 to 1000 rpm, and the current of the roller brush motor is controlled to 100 to 200 A.

The invention discloses an internally dying method for diammonium phosphate, which comprises the following steps: adding humic acid into phosphoric acid and uniformly stirring to obtain mixed raw materials; adding water soluble coloring agent and color matching agent into the mixed materials; enabling the mixed materials to react with liquid ammonia, so as to obtain diammonium phosphate subjected to internally dying. The internally dying method has the advantages as follows: 1, the cost is low as humic acid is taken as the main raw material for internal dying of diammonium phosphate, and the economic benefit is remarkable as the consumption of the traditional water soluble internal coloring agent is reduced from 3-6/1000 per ton to 0.5/1000 below per ton and the cost of the products is reduced by 40 yuan per ton; 2, the precise adjustment can be realized and the product color is stable and reliable as the method comprises three internal dying stages, namely roughly underpainting, finely underpainting and hue adjusting; 3, the transmission of nutrition elements to crops is facilitated as the humic acid can be separated and combined with metal ions in water, the crop growth is facilitated as the soil structure can be improved, and the humic acid is used for replacing the traditional colorant to solve the secondary environmental pollution problem of the traditional colorant, so as to achieve great significance in environmental protection.

The invention discloses a coal-fired power plant sludge drying and blending combustion system. The coal-fired power plant sludge drying and blending combustion system comprises a sludge carbonizing system, a carbonized sludge storage tank, a feeding pump, a dewatering system, a power station boiler and a wastewater recycling system; an outlet of the sludge carbonizing system communicates with an inlet of the carbonized sludge storage tank, an outlet of the carbonized sludge storage tank communicates with an inlet of the dewatering system through the feeding pump, a dried sludge outlet of the dewatering system communicates with a coal feeding belt of the power station boiler, and a wastewater outlet of the dewatering system communicates with the wastewater recycling system; an air exhaust and extraction port, a dosing port and a radar level gauge used for detecting the liquid level of sludge in the carbonized sludge storage tank are arranged at the top of the carbonized sludge storage tank; and a stirrer used for stirring the sludge in the carbonized sludge storage tank is arranged on the side surface of the carbonized sludge storage tank. The coal-fired power plant sludge drying and blending combustion system can solve problem of influence of sediment and carbonized sludge malodor on the environment in the storage, conveying and dewatering processes of the carbonized sludge.

The invention discloses a fertilizer soil activating agent and a method for repairing heavy metal polluted soil. The fertilizer soil activating agent comprises ammonium triphosphate and fulvic acid, and the mass ratio of the two is 0.5-1: 0.25-0.5. The method for repairing the heavy metal polluted soil comprises the step of applying the fertilizer soil activating agent in the repair process of theheavy metal polluted soil. The fertilizer soil activating agent has the advantages of high heavy metal dissolving capacity, capability of accelerating the plant growth, capability of prominently improving the capacity of plants absorbing and enriching multiple heavy metal, low cost, reasonable matching of nutrient components, good economical benefit and the like, is a novel soil activating agent,and achieves excellent application value and application prospect. The method for repairing the heavy metal polluted soil by using the fertilizer soil activating agent has the advantages of simple operation, low cost, high economical benefit, good repair effect and the like, and can efficiently and quickly repair the heavy metal polluted soil.

The invention provides a technological method for comprehensively recovering rhenium, sulfur and arsenic through self-heating volatilization of rhenium, sulfur and arsenic-containing acid mud in a vortex furnace. The method comprises the following steps: drying a rhenium, sulfur and arsenic-containing acid mud raw material until a material discharged from a kiln is loose, adding a slag material, finely crushing, feeding into a vortex furnace, and carrying out volatilization and smelting, carrying out oxidation and exothermic reaction on the furnace material, wherein under the condition that the temperature is increased to 1400 DEG C or above and in an oxidizing combustion atmosphere, all rhenate in the furnace charge can be decomposed and volatilized, arsenic is oxidized into As2O3 steam, sulfur is oxidized into SO2 steam, and the As2O3 steam and the SO2 steam enter flue gas together; and carrying out rhenium and arsenic enrichment on the high-temperature flue gas in a flue gas washing tower, and feeding SO2 into a subsequent desulfurization tower for sulfur recovery. According to the method, the heat efficiency is high, more than 50% of energy is saved, high-value rare elements are saved, the direct recovery rate is about 10-30% higher, precious resources are effectively saved, the waste slag amount is reduced by about 75-90%, the waste slag is ferro-silicon calcium slag which is free of toxic substances and can be utilized, and the problem of secondary environmental pollution in a traditional method is thoroughly solved.

The invention relates to a preparation method of a hydrophobic oleophylic adsorbent by taking towel gourd cotton as a raw material. The preparation method comprises the following steps: 1, taking towel gourd cotton as a raw material, soaking, cleaning and drying the material; 2, immersing the material in an alkaline solution for pretreatment, then adjusting the material to be neutral with an acid,and carrying out cleaning and drying; 3, immersing the material subjected to alkali treatment into a mixed solution of tetraethyl silicate, absolute ethyl alcohol and pure water, then adding a properamount of ammonia water, and then cleaning and drying with ethyl alcohol; and 4, immersing the material in a mixed solution of hexadecyl trimethoxysilane and pure water, adding a proper amount of acetic acid, cleaning with ethanol, and drying to obtain the modified adsorption material. Compared with the prior art, the adsorbent can be widely applied to petroleum leakage treatment and oily wastewater treatment, and the oil absorption material obtained through modification is high in adsorption rate, low in cost, biodegradable and free of secondary environmental pollution.

The invention discloses an oil removal treatment device and method for oil-based drill cuttings. The device is arranged in an upper treatment chamber and a lower treatment chamber and comprises an extraction unit, a solid-liquid separation unit, an extraction oil separation unit and an extraction agent recovery unit. Main equipment of the device is divided into the two treatment chambers, integrated design is adopted, major equipment is placed in the upper treatment chamber, and the lower treatment chamber is mainly used for containing liquid storage tanks of all the units. Through the design,all treated liquid phases can flow into the liquid storage tanks through self weight, a large amount of power is saved, the two treatment chambers are stacked up and down, the occupied area can be reduced, and the equipment can be operated more conveniently.

The invention relates to a method for preparing fertilizer by using organic solid waste. According to the method, the organic solid waste with 75%-50% of water content is crushed and/or rolled and is loaded in ventilated fermentation trays, then the fermentation trays filled with the organic solid waste are stacked for aerobic fermentation for 3-20 days, the organic solid waste is composted and dried into a composted organic material with lower than 40% of water content, and the composted organic material is applied directly as organic fertilizer or is matched with macronutrients and secondary and trace nutrient elements required by plants for production of fertilizer products. With adoption of the method, the fertilizer can be prepared from the organic solid waste in more environment-friendly, efficient and low-cost manners.

The invention discloses a method for repairing heavy metal contaminated soil by Chinese yews. The method includes the step: planting the Chinese yews into the heavy metal contaminated soil for cultivation to finish repairing the heavy metal contaminated soil. The method for repairing the heavy metal contaminated soil by the Chinese yews has the advantages of simplicity in operation, low cost, higheconomic benefit, good repairing effect and the like, and solves the problems that plants in an existing heavy metal contaminated soil repairing technology are low in biomass, less in absorbed and accumulated heavy metal total amount, poor in enrichment capacity and economic benefit, complex in plant field management, high in management cost and little in practical application comprehensive effect and only has resistance to single heavy metals. Regardless of ecological point of view and economic point of view, the method has vital practical significance.

The invention discloses a method for repairing heavy metal contaminated soil by using Stevia Rebaudiana Bertoni. The method comprises the following steps: Stevia Rebaudiana Bertoni is planted in heavymetal contaminated soil, and is cultivated to complete the repairing of the heavy metal contaminated soil. The method for repairing heavy metal contaminated soil by Stevia Rebaudiana Bertoni has theadvantages of simplicity in operation, low cost, high economic benefit and good repairing effect, and solves the problems of low biomass, small total amount of absorbed and accumulated heavy metals, tolerance and enrichment ability to only single heavy metal, poor economic benefit, complex plant field management, high management cost, poor practical application comprehensive effect and other problems of plants in existing heavy metal contaminated soil repairing technologies. The method has great practical significance ecologically and economically.