46results about How to "Reduce post-processing burden" patented technology

The invention discloses a method for treating antibiotic wastewater and belongs to the field of wastewater treatment. The treatment method comprises the following steps: pre-treatment, hydrolysis and acidification, bioaugmentation-based first-stage treatment, Fenton oxidation and biological advanced treatment. The method is applied to treat wastewater from antibiotic production, works with high efficiency, ensures that the effluent quality is safe and stable and meets the requirements listed in the water quality standard GB/T18920-2002, and can achieve the purposes of beneficial cycle of water resources and green production in enterprises.

The invention relates to a farmland nitrogen and phosphorous non-point source pollution control and recycle system, and a method thereof. The system comprises a water collector, an adsorption unit and a water store which are sequentially arranged from the upstream to the downstream according to farmland surface runoff and underground runoff paths. The water collector, the adsorption unit and the water store are sequentially transversely arranged according to the farmland surface runoff and underground runoff paths, so when rain falls or irrigation is carried out, the farmland water is surplus, meets in the water collector through the farmland surface runoff and underground runoff, the water in the collector continuously downward flows and goes through the adsorption unit, nitrogen (N) and phosphorous (P) are adsorbed, the purified farmland drainage enters the water store, and the superfluous purified drainage is discharged to a river and a lake; and when farmland recharging is carried out, the water which reversely flows goes through the adsorption unit for the N and P desorption, and the desorbed N and P enter the water collector with the water flow, afresh enter the farmland and are adsorbed and utilized by crops. Compared with the prior art, the method has the advantages of pollution control, recycle, fertilizing cost saving and the like.

A biological degradation method of thick oil wastewater in an oil field relates to a degradation method of thick oil wastewater in an oil field. Aiming at the problem that the prior treatment process of the thick oil wastewater excessively depends on a flocculating agent, thereby generating a large quantity of oily sludge to bring larger burden and effect on subsequent treatment; and aiming at the problems that the floor area of the thick oil wastewater processed by adopting an anaerobic and aerobic biological method is large; the flow is complicated; the working condition is difficult to control; and the treatment effect is not ideal simultaneously, the method is realized by the following five steps: oil separation treatment, coalescent oil removal, sand filtration tank treatment, hydrolytic acidification treatment and aeration biological treatment; and raw water in a coalescent oil remover flows through a mesh-shaped filling coalescent unit, a subcritical flow chamber and an oil removal unit in sequence to be subjected to oil removal treatment; and the raw water after entering into an aeration biological tank flows through an anaerobic zone and an aerobic zone in sequence. The complete process of the method has the advantages of no secondary sedimentation tank and flocculating agent, compact structure, small floor area, simple flow, easier control of working condition, good effluent water quality and ideal processing effect, thereby realizing the standard discharge of the thick oil wastewater.

The dyeing and striking-off process with soft bag includes the following steps: setting spread cloth or yarn to be dyed inside one soft waterproof bag; injecting dye solution in proper amount into the bag; sealing the mouth of the bag to maintain the dye solution inside the bay and to form dyeing and striking-off bag; stretching the dyeing and striking-off bag with some fixture, and turning and driving the bag to make the dye solution flow inside the bag to penetrate cloth fiber for homogeneous dyeing. The dyeing and striking-off apparatus includes dyeing and striking-off bag, bearing stage for the bag to be set on and fixed, and dyeing machine with support frame, spraying unit, sliding unit, driving unit, hot water tank, cold water tank and airtight door. The present invention has the advantages of homogeneous dyeing, saving in dye solution, low cost and no pollution.

The invention discloses an alkali silicate glass frit, a zirconium frit opaque glaze, a zirconium raw material opaque glaze, and preparation methods of the zirconium frit opaque glaze and the zirconium raw material opaque glaze. The preparation methods are ceramic glazing methods. Main raw materials of the zirconium frit opaque glaze comprise frits prepared from waste silica gel and sodium carbonate, wherein utilization amounts of waste silica gel and sodium carbonate satisfy a SiO2-Na2O mole ratio of (2 to 3): 1. Waste silica gel and other raw materials are directly prepared into pulp and then are sintered into the zirconium raw material opaque glaze. The zirconium frit opaque glaze and the zirconium raw material opaque glaze are prepared from raw materials of zirconium-containing waste silica gel (which is short for waste silica gel), and residual zirconium of the raw materials is utilized as an opacifier, and thus the problems of waste silica gel storage and environmental pollution are solved. The types of the used raw materials are reduced. An opaque glaze production cost is reduced. In preparation, waste silica gel can be directly used without physical and chemical treatment. The zirconium frit opaque glaze and the zirconium raw material opaque glaze are convenient for industrial application, and have performances satisfying general requirements.

The invention discloses a synthesis method of butanedione. According to the synthesis method, a salicylaldehyde derivative reacts with compounds of diamine to generate a schiff base ligand, then coordination with a transition metal salt solution is conducted to prepare metal schiff base complexes, then an F-C acylation reaction is conducted, the metal schiff base complexes are immobilized in a polystyrene microsphere carrier containing an acyl group to be prepared into an immobilized catalyst, and finally acetoin serves as a raw material and is added to the immobilized catalyst, air is introduced for catalytic oxidation, and the butanedione is obtained. According to the synthesis method, the F-C acylation reaction is conducted, the metal schiff base complexes are immobilized in the polystyrene microsphere carrier containing the acyl group, the immobilization rate of the immobilized metal schiff base complexes is raised through chemical bonds, posttreatment of a product obtained through the immobilized catalyst is simple, and the yield of is high; besides, the adopted raw material is the acetoin, production cost is lowered for enterprises producing the acetoin, product diversity is increased, and enterprise competitiveness can be improved.

The invention relates to a selenium-rich biological agent for improving the activity of microbes in soil. The selenium-rich biological agent comprises the following raw materials: 8-15 parts of sodium selenite, 5-15 parts of compound trace elements, 8-20 parts of monopotassium phosphate, 10-25 parts of urea, 8-20 parts of peptone, 4-10 parts of yeast powder, 8-20 parts of NaCl, 8-15 parts of NaOH, 4-10 parts of NaNO3, 10-25 parts of NaCl, 4-10 parts of NH4Cl, 8-20 parts of K2HPO4, 4-10 parts of a beef extract, 10-25 parts of glucose, 10-25 parts of starch, 8-20 parts of calcium carbonate, 10-25 parts of amino acid, 2-6 parts of potassium nitrate, 2-6 parts of ferrous sulfate, 10-25 parts of magnesium sulfate, 25-40 parts of trisodium citrate, 10-25 parts of enzymes and 800-896 parts of excess activated sludge. The selenium-rich biological agent adopts excess activated sludge produced by treatment of domestic sewage, so that not only is the fermentation speed of the selenium-rich biological agent increased, but also the particle diameters of selenium nano-particles are more uniform, and absorption of the selenium-rich biological agent by plants is benefitted.

The invention discloses a culture method for reducing emission of nitrogen and phosphorus from pig raising and application. The method comprises the step of feeding growing and fattening pigs by adopting a manner of mixing green feed and fine feed, wherein the green feed provides 30-35 percent of the acceptable daily intake of crude protein every day for the feeding growing and fattening pigs, and the fine feed provides 65-70 percent of the acceptable daily intake of the crude protein every day for the feeding growing and fattening pigs. The fine feed is commercial pig feed, the green feed is made from sweet potato stems, melon vines or wild water spinach usually planted in the farmland, and the water content of the green feed is 80-90 percent by mass. The method can effectively reduce the content of main pollutants in waste and excrements, has a little influence on the weight increase of the growing and fattening pigs, realizes the pollution and emission reduction of the pig breeding industry, and can save the breeding cost and improve the economic benefit.

The invention discloses a method for preparing cyanopyridine by using chloropyridine under the catalysis of ligand-free palladium, and the method comprises the following steps: in the organic solvent,adopting chloropyridine and potassium ferrocyanide as raw material and potassium carbonate-palladium acetate as catalyst to react at 40-200 DEG C for 2-20h under the protection of inert gas and obtaining cyanopyridine. The method that cyanopyridine is prepared through the catalysis of ligand-free palladium adopts accessible potassium ferrocyanide as source of cyano group so as to avoid the use ofvirulent cyanides such as sodium cyanide, potassium cyanide and the like, reduce the damage of waste acid and the operational hazard, lower the post-treatment load and not need to add expensive phosphine ligand. The operation is simple, thus being applicable to the large-scale production of cyanopyridine compounds.

The invention discloses a method for treating chemical wastewater containing nitrogen heterocyclic compounds, belonging to the field of wastewater treatment. According to the invention, through the combined pretreatment of an electrolysis generating tank and an electrolysis reaction tank, the nitrogen heterocyclic compounds are subjected to ring-opening chain scission to reduce biological toxicity, heterocyclic organic nitrogen is completely converted into ammonia nitrogen, and continuous release of the ammonia nitrogen in the subsequent biological treatment process is avoided; and then anaerobic biological treatment and biological denitrification reaction systems are combined for treatment. The method has the advantages of strong load impact capability, easy operation and control and lowoperation cost, and especially has good treatment effect on chemical wastewater containing nitrogen heterocyclic compounds.

The invention discloses an efficient denitrification treatment method for landfill leachate, and relates to the technical field of landfill leachate treatment. The efficient denitrification treatmentmethod specifically comprises: grid separation, anaerobic treatment, A/O system treatment, MBR treatment and subsequent treatment. According to the invention, the front-end pretreatment and biologicaltreatment technical method in the traditional process is improved, pretreatment, anaerobic treatment and aerobic treatment are combined without adding chemicals, and the stabilization of leachate front-end treatment is realized by utilizing the principles of denitrification anaerobic methane oxidation, short-cut denitrification and anaerobic ammonia oxidation, so that the organic load is reducedto a great extent, the ammonia nitrogen removal efficiency is improved, the nutrient ratio of carbon to nitrogen to phosphorus is balanced, the subsequent treatment burden is reduced, and the treatment difficulty is reduced.

A contaminated soil in-situ circulation leaching treatment method adopting an electrochemical treatment leacheate comprises the following steps that firstly, an electrochemical reactor is arranged on a contaminated soil ground, the upper portion of the chemical reactor is open, the leacheate enters from the upper portion, and the upper portion of the chemical reactor is open; the bottom of the electrochemical reactor is communicated with a leacheate discharge pipe network arranged in the polluted soil through a discharge pipe; 2, after entering the contaminated soil, the leacheate absorbs pollutants in the soil and then is enriched in a water collecting well, and then the leacheate in the water collecting well is sent back into the electrochemical reactor through a sewage pump, so that circulation of the leacheate is achieved; and step 3, after the leacheate is circulated stably, electrifying the positive electrode plate and the negative electrode plate to enrich heavy metal ions in the leacheate and degrade organic pollutants so as to realize efficient circulating operation of the leacheate. The leacheate subjected to electrochemical treatment enters the leacheate discharge pipe network system below again, so that efficient cyclic utilization of the leacheate is realized.

The invention provides an efficient oil-water separation waste liquid treatment method, which comprises the following steps: after being produced in the production process, the waste liquid is guided and conveyed into a collection container through a pipeline, the waste liquid slowly flows in the collection container to stand, solid particles sink to the bottom when the waste liquid is in the standing state, oily liquid floats to the top layer, the left middle part is an aqueous solution, the oily liquid on the top layer is independently guided, discharged and concentrated, the aqueous solution on the middle layer is guided into a circulating purification device, the water content of the aqueous solution is larger than or equal to 85%, the mass ratio of solid particles is smaller than or equal to 5%, the mass ratio of the oily liquid is smaller than or equal to 10%, the aqueous solution generates purified water in the circulating purification device, the rest part is circularly filtered, and the final high-concentration waste liquid is intensively collected. According to the scheme, the filtering effect of the waste liquid is improved by adopting a mode of early-stage standing and circulating purification.