262results about How to "High salt content" patented technology

The invention discloses a method for realizing zero emission of dyeing wastewater with high salinity in printing and dyeing enterprises. The method comprises the following steps that: the wastewater enters a regulating reservoir first for homogenizing, and then enters a reaction tank, ferrous sulfate is added into the reaction tank to regulate the pH value and perform a coagulation reaction, effluent enters a sedimentation basin for precipitating after the reaction, supernate of the sedimentation basin is treated by an electrochemical reactor, enters a secondary sedimentation basin so as to remove scummings and dregs and enters an aeration tank for aerating, and the supernate is filtered by a manganese sand filter for deferrization after the aerating; the filtered effluent is treated by using an ultrafiltration membrane, concentrated water of the ultrafiltration membrane returns to the regulating reservoir, and fresh water enters a nanofilter membrane for treating; the fresh water outputted by the nanofilter membrane enters a reverse osmosis membrane, the outputted concentrated water returns to the regulating reservoir or is evaporated directly; and concentrated water of the reverse osmosis membrane enters an electrodialyzer, electrodialytic fresh water is refluxed to be used as inflow of the reverse osmosis membrane, and electrodialytic concentrated water enters an evaporator for evaporating. Vapor generated by evaporating can be used for printing and dyeing production, residues generated by the evaporating are used as solid wastes, and water pollutants are not discharged in the whole process.

The invention provides a method for preparing acid-base from rare-earth sodium saponification waste water. The method comprises the steps that: firstly sodium saponification waste water is treated by a sedimentation basin and an ultrafiltration system; water produced by the ultrafiltration system enters an oil removal system to be treated, and concentrated water enters the sedimentation basin to be settled; water produced by the oil removal system enters a nanofiltration system to be treated; water produced by the nanofiltration system enters a bipolar membrane system to be treated, and concentrated water returns to the sedimentation basin; water treated by the bipolar membrane system is acid-base, and residual thin brine is conveyed to an electrodialysis system to be treated; concentrated water passing through the electrodialysis system returns to the bipolar membrane system for producing the acid-base, part of freshwater enters the bipolar membrane system to serve as make-up water, and part of freshwater serves as recycle water. According to the method, a pretreatment and membrane integration technology is adopted for treating rare earth metallurgy waste water, a final permeating liquid is used for production, concentration desalination treatment is carried out on smelting waste water by using the characteristics of ultrafiltration, electrodialysis, a nano-filtration membrane and a bipolar membrane, a concentrated liquid is used for preparing acid-base, and freshwater subjected to electrodialysis treatment is recycled; and the rare-earth sodium saponification waste water is comprehensively treated.

A method and system for identifying management zones for variable-rate crop inputs, wherein the zones are developed using soil, water and topography base maps. The base maps are combined into various different zone maps, and a final zone map is selected on the basis of observed field characteristics.

The invention discloses an advanced treatment process of paper-making wastewater. The process comprises the following steps: introducing the paper-making wastewater after being subjected to secondary biochemical treatment into a micro-aeration iron reduction bed, backfilling iron chips in the micro-aeration iron reduction bed, and carrying out reducing reaction to the paper-making wastewater in the micro-aeration iron reduction bed; introducing effluent water after being processed according to step one into a coagulation basin, and adding a coagulating agent and a coagulant aid to the coagulation basin, so as to promote grains in the water to be agglomerated; introducing effluent water after being processed according to step two to a sedimentation tank for sludge separation; introducing the effluent water in the sedimentation tank into a filter basin for being filtered; introducing the effluent water filtered after being sterilized and disinfected into a reusing water pipe network; introducing sludge in the sedimentation tank and back washing blow-off water in the filter basin into a sewage thicker, and outwardly transporting the sludge and the back washing blow-off water after being dehydrated for disposal; and meanwhile, introducing dehydrate filtrate solution and overflowing liquid in the sewage thicker into the coagulation basin for re-treatment. The process has the advantages of simple process, good decoloration effect and cheap cost.

The invention discloses a salted goose processing method. The salted goose processing method comprises the following steps: (1) slaughtering and cleaning a goose; (2) covering the goose carcass with a mixture formed by grinding geranium, xanthoxyli fructus and star anise and then frying the obtained powder with salt; (3) evenly injecting marinade into the goose body, placing the goose into a vacuum tumbling machine after injection to achieve pickling at a low temperature in an intermittent circulatory vacuum mode; (4) placing the processed goose into marinade for pickling, and then taking out the goose, air-drying, disinfecting and vacuum-packing. As the intermittent circulatory vacuum node is adopted for pickling, salt absorption of goose is promoted, water loss is reduced, and salt and water can be distributed on the surface and in the goose more evenly. The salted goose processing method can save about 4 hours (more than 200%) when used for one-step pickling to achieve the same pickling effect as a traditional pickling method; compared with the control group of the traditional pickling method, the moisture content, salt content and mass of goose are all remarkably higher than those of the control group.

The invention discloses an electroosmosis electrode and a mounting mode. The electroosmosis electrode on the same metal pipe is divided into a connecting exhausting section, an insulating section and an open pore processing section from up down in sequence; wire connecting pores and water and air discharging pores are distributed on the connecting exhausting section; the outside of the insulating section is coated with insulating varnish; water discharging pores are distributed on the open pore processing section densely; the top of the connecting exhausting section is provided with a plastic cap and the bottom thereof is provided with metal shoes. When mounting, the top end of the insulating section is required to be higher than the ground, the bottom end thereof is required to be deeper than the bottom of soil layer good in water permeability; adjacent four electroosmosis electrodes are mounted in rectangle shape, and the distance between electrodes with similar polarities is shorter than that between electrodes with opposite polarities; intermediate water discharging electroosmosis electrodes are inserted between the adjacent four electroosmosis electrodes; anode electroosmosis electrodes and cathode electroosmosis electrodes are respectively connected with the anode and cathode of DC power source. The invention can cause electroosmosis processing efficiency to be enhanced and the effect to be uniform, and is economic and efficient under condition of complicated stratum.

The invention relates to a roll typed electric adsorption filter core. The invention has the structure that a roll typed electric adsorption component part is arranged inside a casing, and a liquid inlet, a liquid outlet and an electrode are arranged in the casing. A composite layer, which is composed of a conductive layer, a adsorption layer, a supporting layer, a adsorption layer, a conductive layer, a adsorption layer, a supporting layer and a adsorption layer (totally eight layers), winds on the core shaft, and the fixing layer on the lateral side tightens the composite layer to make the composite layer fixed on the core shaft. When original liquid enters into the filter core through the liquid inlet, and while passing the supporting layer of the roll typed electric adsorption component parts, the charged particles (like metal ions: calcium, magnesium, sodium, lead, mercury, cadmium and so on, and acid radical, etc) are absorbed in the electric double layer on the surface of adsorption layer under the effect of direct current electric field force, and then are effectively removed, and so the liquid is purified. The fluid flow of the roll typed electric adsorption filter core distributes evenly and has strong adaptability to original liquid. The invention has good purification effect, low operation energy consumption, simple structure, low manufacture cost and long useful life, and can purify water, wine, beverage and other liquids.

The invention relates to a special fertilizer for Zhanhua winter jujubes, a preparation method and the application thereof. The special fertilizer for Zhanhua winter jujubes comprises the following raw materials in parts by mass: 50 to 70 parts of zymolysing oil residues, 10 to 20 parts of urea, 5 to 15 parts of DAP (diammonium phosphate), 10 to 18 parts of potassium sulfate, 0.5 to 1 part of ferrous sulphate, 0.3 to 0.7 part of zinc sulfate and 0.2 to 0.4 part of boric acid, wherein the zymolysing oil residue is a product produced by carrying out biodegradation on the oil residues by using lipases in bacillus subtilis fermentation broth and yarrowia lipolytica fermentation broth and proteases in geotrichum candidum fermentation broth and lactobacillus plantarum fermentation broth. The special fertilizer of the invention is prepared especially according to the nutrient status of soils in the main producing areas of Zhanhua winter jujubes and the regulation of nutrient absorption of the jujubes, and has the advantages of reasonable nutrient ratio and strong pertinence. The special fertilizer can reduce the salt damages caused by fertilizing and the organic and inorganic combination can improve the soil fertility.

The invention relates to an ectopic-in-situ combined bioremediation method of high-concentration petroleum contaminated soil, and belongs to the technical field of contaminated soil remediation. The ectopic-in-situ combined bioremediation method comprises the following steps: firstly, high-concentration petroleum contaminated soil is subjected to ectopic biological piling, so that the concentration of petroleum hydrocarbon in soil is reduced greatly; then a certain amount of the piled materials are returned to the field, so that the concentration of petroleum hydrocarbon in soil after field return is less than 2000mg.kg<1-> to meet the in-situ remediation requirement; finally, the remediation requirement is achieved after in-situ remediation. The ectopic-in-situ combined bioremediation method is combined skillfully so as to achieve the economical and efficient remediation effect.

Disclosed are an efficient and stable coking wastewater advanced treatment process and a treatment system. The coking wastewater advanced treatment system comprises a microelectrolysis cell, a microwave auxiliary catalytic oxidation device, a mixed reaction pond, a settling pond, a filter, a frequent reverse electrode electro-osmosis device and a reverse osmosis device, the microwave auxiliary catalytic oxidation device is connected with the microelectrolysis cell, the mixed reaction pond is connected with the microwave auxiliary catalytic oxidation device, the settling pond is connected with the mixed reaction pond, the filter is connected with the settling pond, the frequent reverse electrode electro-osmosis device is connected with the filter, and the reverse osmosis device is connected with a fresh water outlet of the frequent reverse electrode elctro-osmosis device. The COD (chemical oxygen demand) content and the saltness of outflow water after treatment of the microelectrolysis cell and follow-up microwave catalytic oxidation, coagulation sedimentation, filtration and electro-osmosis treatment are low, so that the previous devices can be matched with the electro-osmosis device and the reverse osmosis desalting device, and the system can run stably while efficient desalting is realized. In addition, a concentrate circulation mode of the desalting system is optimized, and the quality of the outflow water is greatly improved under the condition that water use efficiency is not decreased.

The invention relates to a rapid high-efficient fermentation production method of a health fermented soya bean. The rapid high-efficient fermentation production method comprises following steps: soybean is immersed, and is mixed with wheat bran, and the mixture is disinfected at a temperature of 121 DEG C for 30min; the cooked mixture is cooled to a temperature about 40 DEG C, is inoculated with triangular flask mold starter, and is cultured at a temperature of 30 DEG C until the surface of the cooked mixture becomes white so as to obtain fermented soya bean mold; salt solution with a concentration of 10% is added into the obtained fermented soya bean mold so as to get water content of a fermented soya bean mash reaching 80 to 100%, and the fermented soya bean mash is subjected to high temperature fermentation at a temperature of 50 DEG C for 7 days so as to obtain a matured fermented soya bean mash; hot water with a temperature of 90 DEG C is added into the fermented soya bean mash, the fermented soya bean mash is subjected to heat preservation for 2 to 4h, and then is filtered so as to obtain crude soybean sauce, wherein a left solid material is linyou fermented soya bean; 0.1 to 1% of a fermented bacillus natto solution (more than 2000IU/mL) is added into the linyou fermented soya bean so as to obtain a basic fermented soya bean; and different spices such as rice wine, capsicum and Chinese prickly ash are added into the basic fermented soya bean so as to obtain the health fermented soya bean. Compared with traditional production methods, advantages of the rapid high-efficient fermentation production method are that: microbial contamination is less, fermentation period is short, product salt content is low, and contained nattokinase is stable. In addition, one-step fermentation is adopted, the obtained soybean source and the health fermented soya bean are rich in nutrients, are varied, and are suitable for large scaled fermentation production.

The invention discloses a method for processing soy sauce stewed beef by ultrasonic assisted boiling. In a heating and boiling process, heating is assisted by ultrasonic waves and rapid boiling is carried out. According to the method disclosed by the invention, mechanical effect, cavitation effect and heat effect of the ultrasonic waves are applied, so that the boiling time of the soy sauce stewed beef is shortened, energy sources are saved and the production cost is reduced; the penetration efficiency of stewing soup is remarkably improved and the salt content at a central part of a large piece of the soy sauce stewed beef is increased; the water-retaining property of a meat product is improved, so that the production efficiency is improved; the rigidity of the product is reduced, the tenderizing effect is realized and the quality of the product is improved.

A process for treating and recovering the ammonia/ammonium contained waste water generated in preparing catalyst includes reverse-osmosis concentration of the said waste with low ammonia content, direct use of the resultant liquid or partial use of it as the ammonia vapour absorbing liquid in stripping tower, mixing the concentrated liquid with the high-concentration the said waste water, adding alkali to regulate pH value, loading in stripping tower to recover ammonia from tower top and discharging the clean water. Its advantages include low energy and chemical consumption, and high recovery rate.

The invention provides an electroplating wastewater treatment method which is characterized by sequentially including the steps: (1) pre-treating metal wastewater, organic wastewater, complex wastewater, cyanide-containing wastewater, nickel-containing wastewater, zinc-containing wastewater and chromium-containing wastewater to obtain pretreated water; (2) mixing and concentrating the pretreated water obtained in the step (1) to obtain high-salinity concentrated water and reused water; (3) mixing the high-salinity concentrated water obtained in the step (2) with the pretreated water obtained in the step (1), and performing biochemical treatment; (4) performing hyper-concentration on biochemical treatment water obtained in the step (3) to obtain ultra-high-salinity concentrated water; (5) evaporating and crystallizing the ultra-high-salinity concentrated water obtained in the step (4) to obtain reused water and a crystal substance. The method is simple in operation and stable in running, zero emission or low emission of comprehensive electroplating wastewater in electroplating production is achieved, and metal ions in the wastewater are recycled in a high-purity manner.

The invention discloses an advanced treatment and reuse method of a pre-coated membrane of tail water of a sewage plant. The method comprises the following steps: firstly, feeding tail water into an adjusting pool so as to be homogenized, and then passing through a sand filter; passing through an ultrafiltration membrane by a solution containing a pre-coated membrane material and sand filtered effluent and effectively forming a dynamic membrane on the surface of the ultrafiltration membrane, wherein concentrated water of the ultrafiltration membrane returns to the adjusting pool while the effluent enters into a middle water tank; backwashing the ultrafiltration membrane through a pump by part of water in the middle water tank periodically, wherein the pre-coated membrane automatically falls and the sediment of the coating material is recycled to a pre-coated membrane material dosing device repeatedly, so that the operating cost is lowered; entering into reverse osmosis membrane treatment by water in the middle water tank, fresh reverse osmosis membrane is used as industrial water in the park to be returned, and the concentrated water is treated by an electrochemical reactor, and the effluent reaches the standard to be discharged. By adopting the pre-coated membrane method, the ultrafiltration backwashing frequency is low, and the water yield of the ultrafiltration membrane is improved. Loose filter cake layers with great holes can be formed to effectively relieve the rate of descent of membrane flux, improve the anti-pollution capacity of the membrane and improve the removal effect of the membrane on the water quality index at the same time.

The invention discloses a method for cultivating cotton in saline-alkali soil, and relates to the field of technologies for cultivating crops. The method is characterized by comprising steps of plowing the soil to press salt; pressing the salt by the aid of water; additionally applying organic fertilizers to the saline-alkali soil; sowing seeds in due time; covering the soil by mulching films; placing seedlings in the soil in due time; reducing branches of cotton and pruning the cotton; uncovering the mulching films timely, watering the cotton and applying additional fertilizers to the cotton; performing reasonable chemical control; timely performing insect disease prevention on the cotton. The method has the advantages of simplicity, clear steps and good cultivation effect.

The invention discloses a method for improving Abelia seedling salt tolerance by oriented induction. The method comprises the steps of: (1) material sterilization, (2) induction of adventitious buds, (3) bud differentiation and subculture, (4) rooting culture, (5) seedling hardening, (6) seedling transplanting, and (7) seedling management. The method provided by the invention makes use of tissue culture and container seedling raising to add NaCl with different concentrations into a differentiation proliferation medium, a rooting medium and a culture matrix for transplanted seedlings gradually, so that the seedling salt tolerance can be enhanced from about 0.2% to about 0.6% (normal growth can be realized when the NaCl content of an annual seedling matrix is 0.4-0.5%, and normal growth can be realized when the NaCl content of a biennial seedling matrix is 0.5-0.6%), and the fixed planting survival rate in saline-alkali soil can be over doubled.