225results about How to "In line with the sustainable development strategy" patented technology

The invention discloses eco-friendly self-compacting concrete prepared through complete recycling of waste concrete. The eco-friendly self-compacting concrete comprises components in parts by weight as follows: 100 parts of cement, 10-25 parts of fly ash, 10-25 parts of mineral powder, 20-40 parts of recycled micro-powder, 1-2 parts of a polycarboxylate superplasticizer, 230-380 parts of recycled fine aggregate, 240-400 parts of recycled coarse aggregate and 45-60 parts of water which are mixed. The coarse aggregate only adopts the recycled coarse aggregate, the fine aggregate only adopts the recycled fine aggregate, the recycled micro-powder formed by grinding waste materials produced in production of the recycled aggregate is blended into a mineral admixture, so that complete recycling of the waste concrete is realized, and the eco-friendly self-compacting concrete has a very good eco-friendly effect.

The invention provides a fly ash based geopolymer. The fly ash based geopolymer comprises a dry powder phase and water, of which the mass ratio is 20:3, wherein the dry powder phase comprises the following components in parts by weight: 60-85 parts of fly ash, 0-25 parts of silica fume, 10 parts of solid sodium silicate, 5 parts of industrially pure sodium hydroxide and 0.05-0.12 part of sodium tripolyphosphate. The fly ash based geopolymer can replace cement to prepare engineering materials such as concrete, mortar and the like, and is expected to be applied in the fields such as utilization of high-strength thermal mortar, high temperature resistant reinforcement materials, corrosion-resistant concrete structures and industrial wastes, rapid repairing materials, high-strength and high-performance materials, and the like. Meanwhile, the industrial waste fly ash can be largely and efficiently utilized; the fly ash based geopolymer has great significance on saving of resources, saving of energy sources and protecting of the environment. A preparation method of the fly ash based geopolymer is also simultaneously provided.

The invention discloses a comprehensive aquaculture device and a method based on a multi-trophic-level ecological ditch. An aquaculture pond is connected with a filter feeding type fish aquaculture area through a culvert pipe, the filter feeding type fish aquaculture area is connected with an emergent aquatic plant purification area through a water filtration partition, the emergent aquatic plant purification area is connected with a submerged plant purification area through a water filtration partition, a water filtration partition is arranged at the tail end of the submerged plant purification area, and a water pump is arranged inside each partition. The aquaculture method includes the steps that the step A, source water which is acquired on the rim and accords with fishery water quality standards is pumped into the aquaculture pond through automatic flow or a water pump; step B, the aquaculture mode of combination of high-density stocking and multiple stocking and multiple fishing is adopted; step C and step D, along with arrival of aquaculture seasons, an impeller type aerator and a water ploughing machine are arranged in the aquaculture pond; step E, fishes are stocked in the filter feeding type fish aquaculture area; step F, leakage and water evaporation are carried out, and standard source water is added into the aquaculture pond. By means of the comprehensive aquaculture device and the method based on the multi-trophic-level ecological ditch, structure is simple, aquaculture is convenient to operate, aquaculture yields are improved greatly, and water area environment is protected.

The present invention relates to the field of organic chemistry, particularly to a method for preparing acrolein through catalysis of glycerol liquid phase dehydration by using a pyridine ion liquid. According to the method, a pyridine ion liquid is adopted, a semi-batch reaction is adopted, and glycerol liquid phase dehydration is performed at a reaction temperature of 250-350 DEG C and a molar ratio of the ion liquid to the glycerol of 0.5:100-1.2:100 to prepare the acrolein, wherein a glycerol conversion rate is 100%, and an acrolein yield is 32.0-67.9%. According to the present invention, the biomass glycerol is adopted to prepare the high added value acrolein, raw material cost is low, raw material sources are wide, acidity of the catalyst can be adjusted, catalytic activity is high, and the process has characteristics of fast reaction, high selectivity, simple product system separation, safe and environmental protection process, and industrial production.

The invention relates to the technical field of recycling waste water produced by fermenting vitamin B12, and discloses a microbial ecological agent and a preparation method thereof. The invention more particularly relates to a microbial ecological agent product prepared by taking the waste water produced by fermenting vitamin B12 as raw material through the fermentation process of lactobacillus, microzyme and bacillus. Furthermore, the product is applied for nuisanceless agriculture; the invention develops the usage of the waste water of vitamin B12, so as to change waste into valuable and realize zero emission in the process of producing waste water by fermenting vitamin B12.

The invention discloses anti-cracking steam-curing-free ultra-high-strength high-toughness concrete. The anti-cracking steam-curing-free ultra-high-strength high-toughness concrete is prepared from cement, fly ash, silica fume, a mineral activator with cementing property, gravel, river sand, steel fibers, a polymer emulsion, water and a shrinkage-reducing super-dispersing admixture, wherein the mineral activator with cementing property comprises waste prefabricated concrete set cement crystal seeds and desulfurized gypsum. By using the mineral activator with cementing property in the concrete, high-temperature steam curing and pressurized steam curing systems adopted in the ordinary ultra-high-performance concrete are eliminated; and the shrinkage-reducing super-dispersing admixture having the functions of super-dispersing cement, reducing shrinkage, decreasing viscosity and the like is adopted to enable the hydration activity of cement to give a full play so that the strength of the concretes has no obvious change after cement usage is decreased by about 10%; and meanwhile, the mineral activator and the admixture can effectively suppress the shrinkage of concrete. The concrete prepared by the preparation method is higher in strength, toughness and shrinkage resistance, low in cost and simple in preparation method and has important practical application value.

The invention provides an aquaculture method of a high-quality and high-yield clear water grass carp. The aquaculture method comprises the following concrete steps: (1) building a pond; (2) carrying out pre-treatment on the pond; (3) stocking fries; (4) feeding feed; (5) regulating and controlling water quality; (6) preventing and treating diseases; and (7) fishing in good time. By adopting the aquaculture method provided by the invention, fish flesh quality of the grass carp is improved after the grass carp is cultured for two years, content of fibers and proteins in the fish flesh is greatly increased, the fish flesh is tender and crisp, and the fish flesh is boilproof and does not break and taste is delicious and refreshing, so that high-quality grass carp with crisp flesh is obtained; besides, by virtue of reasonable distribution of feed, on one hand, the fish flesh quality of the grass carp is hard, crisp and tasty and the fish flesh is delicious and refreshing in taste, and on the other hand, the feed adopts Se-enriched feed, organic selenium content of a feedstuff fish is increased, digestive absorption of the grass carp to selenium is promoted. Compared with common grass carp, selenium content of the grass carp cultured by adopting the method is 10 times that of the common grass carp, health function is obviously enhanced, and immunity of a human body can be enhanced.

The invention discloses citric acid gold potassium used for gold plating and the preparation method thereof. The molecular formular of the citric acid gold potassium is K3Au2C9H5O7N2. The method comprises the steps as follows: gold trichloride is dissolved in water of certain temperature, is concentrated and diluted under the temperature for multiple times, and is reacted with potassium citrate, ethylene diamine tetraacetic acid and malononitrile in a reactor under the certain temperature and the certain time to produce the organic gold salt which has low toxicity and contains no free cyanogen. When the product has the same gold content with the potassium gold cyanide, the total CN- is 5 to 6 percent, being 50 percent lower than that of the CN- in the potassium gold cyanide. The waste liquid after gold plating contains free the CN- in small amount. The invention reduces the cost of waste water treatment for the electroplating plants.

The invention discloses a preparation method for water purifier capable of synchronously removing ammonia nitrogen and phosphorus in waste water, which belongs to the water treatment chemicals production technology in the field of environmental protection. The preparation method for the water purifier comprises the following steps of (1) placing mineral powder containing magnesium and calcium with given percentage amount into steel acid-washing waste liquid to have chemical reaction with hydrochloric acid in the waste liquid; (2) oxidizing reacted products, oxidizing ferrous ions to be ferric ions, and generating ferric chloride solution containing magnesium and calcium ions; and (3) aging and filtering the ferric chloride solution containing the magnesium and the calcium ions, evaporating and concentrating the solution when necessary, and packing the product after the product meets the index requirements. Products prepared by the preparation method can conform to the category II standard of water purifier ferric chloride of GB4482-2006, have a remarkably effect for synchronously removing the ammonia nitrogen and phosphorus for industrial sewage, agricultural breeding waste water and domestic waste water while having all performance characteristics of the ferric chloride, the resource-oriented comprehensive utilization of the steel acid-washing waste liquid can be realized, and a purpose for controlling waste through waste can be realized.

The invention relates to mortar, and particular relates to recyclable red brick sand premixed dry mortar which is applicable to building and plastering at normal temperature and low temperature, is manufactured by crushing red brick recycled in a building removing process and can replace natural sand. The recyclable red brick sand premixed dry mortar is prepared by mixing cement, river sand or sea sand and adding less additive, wherein the recyclable red brick sand partially or entirely replaces the river sand or sea sand, the replacement rate of the recyclable red brick sand is 30-100%, and a certain amount of modifier is added. Specifically, the recyclable red brick sand premixed dry mortar comprises the materials in which the mass ratio of cement to river sand(or sea sand) to recyclable red brick sand to a modifier is 1: (1-6.0): (0-3.0): (0.05-0.2). The production process comprises the steps of: (1) detecting and drying raw materials; (2) preparing the modifier; (3) evenly mixing the cement, natural sand and/or recyclable red brick sand and modifier according to proportion to obtain the finished recyclable red brick sand premixed dry mortar; (4) testing consistency, layering degree and stability; and (5) metering and putting in storage.

The invention provides a breeding method for grass carp with clean water. The method comprises the following steps: (1) selecting and cleaning a pond; (2) stocking juvenile fish; (3) feeding with fodder; (4) managing water quality; (5) controlling diseases; and (6) fishing in due time. The breeding method provided by the invention is a sustainable developing grass carp breeding method. According to the method, all aspects are finely designed, so that the grass carp is strong, can quickly grow, tastes soft and nice, is rich in nutrition and difficultly falls ill; the yield of the grass carp can be increased; the method has higher promotion value; according to the invention, the fodder is reasonable in formula, balanced in nutrition and suitable for grass carp; especially, selenium-rich raw materials are added, so that the digestive absorption of grass carp for selenium is boosted; compared with the common grass carp, the grass carp has the advantages that the selenium content is increased by 10 times, the healthcare function is obviously enhanced, the immunity is boosted and the grass carp can resist oxidation, ageing and caner.

The invention relates to the technical field of concrete in building materials and discloses limestone ultrafine powder concrete with a strength grade not higher than C40. The limestone ultrafine powder concrete is prepared from coarse aggregate, fine aggregates, cementing materials, water and an additive, wherein the coarse aggregate is rubble; the fine aggregates comprise river sand and machine-made sand; the cementing materials comprises comprise cement, slag powder, fly ash and limestone ultrafine powder; and the additive is a water reducing agent. In the invention, the limestone ultrafine powder replaces certain amount of cement as part of the cementing materials; the prepared limestone ultrafine powder concrete is superior to traditional concrete in terms of working performance, compressive strength, elasticity modulus, durability and the like; and moreover, the cement is saved, the production cost of concrete is reduced, the energy consumption and CO2 discharge in the cement production process are reduced, and the combination of greenness, energy conservation and environmental protection can be realized.

The invention discloses modified rubber particle lightweight ultra-high performance concrete and a preparation method thereof. The concrete is prepared from cement, fly ash microbeads, silica fume, pottery sand, rubber particles, copper-plated steel fibers, waterborne epoxy resin, a water-retaining shrinkage-reducing internal curing agent, a water reducing agent and water as main raw materials, wherein the rubber particles are prepared by crushing waste tires and then modifying the crushed waste tires. The modified rubber particle lightweight ultra-high performance concrete has the advantagesof light weight, high strength, high impact toughness, abrasion resistance and good volume stability, and has practical application value.

The invention relates to a preparation method for a cation nanocrystalline cellulose enhanced papermaking surface sizing agent.According to the preparation method, firstly, edible corn starch is gelatinized and compounded with cation styrene-acrylic emulsion; secondly, cation nanocrystalline cellulose is used for enhancing the composite emulsion; lastly, a Mayer coating machine is used for conducting surface sizing on fine dried noodle cardboard paper.According to the prepared surface sizing agent, the edible corn starch and the nanocrystalline cellulose are used as main raw materials, application of synthetic latex cation styrene-acrylic emulsion is omitted, and this conforms to the strategy of sustainable development.The cation nanocrystalline cellulose enhanced papermaking surface sizing agent is simple in preparation process and good in flowing property, a good barrier property is given to the paper, and meanwhile the mechanical property and surface property of the paper can be improved.

The present invention relates to a steel-concrete composite building structure and its construction method. The structure includes the bearing member and building exterior-protected construction, the bearing member includes several bearing vertical columns which are spaced and arranged and several layers of floor members which are spaced and arranged, and the building exterior-protected construction includes non-bearing wall panel and several hanging components fixed on the floor member, and the non-bearing wall panel includes the rebar welding net fixed on the hanging component, it also includes internal heat-insulating plate and external heat-insulating plate and internal surface crack-resisting protecting layer and external surface crack-resisting protecting layer.

The invention relates to the technical field of treatment and comprehensive utilization of animal slaughter industrial wastewater, finds new application of blood wastewater, and provides a microbial fertilizer which is manufactured by taking blood wastewater as a raw material and selecting lactobacillus and bacillus through fermentation. The microbial fertilizer has the advantages of pesticide residues degradation, and can be used for producing nuisanceless agricultural products.