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30results about How to "To achieve harmonious development" patented technology

Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter

The invention discloses a method for the advanced treatment of wastewater. The method comprises the following steps of: 1) filtering off-standard wastewater, delivering the wastewater into a catalytic ozonation tower, and simultaneously adding ozone for contact oxidization reaction; 2) delivering the effluent of the catalytic ozonation tower into an oxidization buffer stabilization basin for stabilization; 3) and after the stabilization, delivering the effluent into a BAF basin for treatment, and delivering discharged water into a clean water basin. The method reduces the addition amount of the ozone, improves the utilization efficiency of the ozone, converts the ozone into hydroxyl radicals by using a metal catalyst, and reduces the activation energy of hydroxyl radical oxidation reaction to promote hardly biodegradable macromolecule organic substances in the wastewater to be oxidized into easily biodegradable micromolecule substances, so that the biochemical limit to refining the wastewater is broken through and the biodegradability of the wastewater is increased; and the water quality of the effluent can meet the provincial standard of Jiangsu province, namely Chemical Industry Main Water Pollutant Discharge Standard, completely by further treatment in the BAF basin.
Owner:CHINA NAT OFFSHORE OIL CORP +2

Novel traffic layout and control method for city road net and crossing

InactiveCN1766232AReduce the number of phasesRealize "green wave" controlRoad vehicles traffic controlTraffic signalsTravel modeSimulation
The invention discloses a traffic organization design and control improvement method of intersection passing capacity and road net traffic content in the traffic design and control domain, which is characterized by the following: adapting main road junction peripherial road net to form a micro-circulation system to finish steering task of each direction; adapting the ways such as í‹stop turning left or rightíŒ, í‹one way runningíŒ and so on to simplify the traffic intersection collision to improve the traffic intersection passing capacity; utilizing í‹green waveíŒ to reduce the parking frequency and driving delay. The program is fit for mutual matching of different grades, which realizes the city traffic harmonious development.
Owner:钱红波

Comprehensive compensation system for Vv wiring traction substation with out-of-phase and in-phase compatibility

The invention discloses a comprehensive compensation system for a Vv wiring traction substation with out-of-phase and in-phase compatibility. On the secondary side of a traction substation, both a leading phase (T1-N) and a lagging phase (T2-N) supplies a traction load with power. The direct current sides of a first static var generator (SVG1) and a second static var generator (SVG2) are arranged in a back-to-back way, the alternating current sides of the SVG1 and the SVG2 are respectively connected with the leading phase (T1-N) and the lagging phase (T2-N) of a Vv traction transformer, the comprehensive compensation system which is compatible with out-of-phase and in-phase structures and easily develops and transforms from an out-of-phase mode to an in-phase mode is formed so as to generate a negative sequence power flow opposite to the traction load, and reactive compensation and harmonic suppression are combined through reasonable control. The application of the system is flexible, in-phase power supply is easy to realize, power phase splitting at the exit part of the traction substation is cancelled, and power supply bottleneck is eliminated.
Owner:SOUTHWEST JIAOTONG UNIV

Petrochemical wastewater advanced treatment method

ActiveCN105060633AAvoid the problem of narrow adaptationIncrease profitMultistage water/sewage treatmentFlocculationFiltration
A petrochemical wastewater advanced treatment method includes the following steps: a, discharging secondary treatment effluent of petrochemical wastewater into a sewage pool, ascending the effluent into a coagulation sedimentation tank by a water inlet pump, at the same time, adding a flocculant PAC and a flocculant PAM to the coagulation reaction pool, determining the PAC adding quantity to be 10-30 mg / L and the PAM adding quantity to be 0.2-0.8 mg / L according to water quality conditions of the petrochemical wastewater, after sedimentation, allowing the effluent to enter a primary filter, filtering to remove residual suspended solids, and allowing the effluent after filtration to flow into a middle water pool; b, sending the wastewater in the middle water pool to a catalytic oxidation reactor by a lifting pump with the residence time of 0.5-1.5 h, feeding water and simultaneously adding ozone with the ozone adding quantity of 20-50 mg / L, and carrying out a catalytic oxidation reaction; and c, allowing the effluent of the catalytic oxidation reactor to self-flow through a pipeline mixer, adding the flocculant PAC in the pipeline mixer with the PAC adding quantity of 2-4 mg / L, allowing the wastewater after mixing to enter a secondary filter, carrying out micro-flocculation and filtration treatment, allowing clear water after filtration to enter a clear water pool, and meeting requirements of discharge or reuse.
Owner:PENYAO ENVIRONMENTAL PROTECTION

Ecological method of raising chickens under forest

The invention relates to a method for raising chickens, and more particularly to an ecological method of raising chickens under the forest. The method includes the following steps: selection of a forest land: appropriately choosing a middle aged forest, which has sparse crown canopy, enough height and sunlight, good ventilation, and more abundant insects and weeds; selection of chicken breeds: selecting local chickens, which have strong adaptability, resistance to disease, high resistance to a coarse feed, and diligence in foragingand conducting raising; preparation of a site: looking for a relatively flat place to build a simple chicken shed in the clearance of the forest land; chick raising; selection of a feed: according to the age in days of the chickens feeding the chickens with a chick starter, a feed for middle chickens, and a complete feed for big chickens, respectively, while adding grain, wheat and bran feeds, and finally feeding all the chickens with the grain, wheat and bran feeds; prevention and treatment of diseases of disease; grazing; and timely sale of chickens: of performing selling when the chickens are 2 kg by weight. The ecological method of raising the chickens under the forest provided by the invention has the advantages of delicious chicken, good taste, high profit, low cost of farming, short time and high economic efficiency.
Owner:柳江县素情家禽专业合作社

Breeding method for japonica two-line thermo-photo-sensitive genic male sterile line

The invention discloses a breeding method for a japonica two-line thermo-photo-sensitive genic male sterile line. The breeding method comprises the following steps: selecting Shuxin 8S and japonica restorer line Xinjing 326, and carrying out sexual hybridization to obtain a Shuxin 8S / Xinjing 326 F1 generation; carrying out allopatric hybridization on the Shuxin 8S / Xinjing 326 F1 generation and Xinjing 221 to obtain a Shuxing 8S / Xinjing 326 / / Xinjing 221 F1 generation; and then carrying out backcross on the Shuxin 8S / Xinjing 326 / / Xinjing 221F1 generation and Xinjing 326, and carrying out shuttlegeneration-adding nursery breeding between north and south on the obtained F1 generation according to a genetic selection method to obtain the japonica two-line thermo-photo-sensitive genic male sterile line. According to the breeding method for the japonica two-line thermo-photo-sensitive genic male sterile line, an indica male sterile line and a japonica middle-long-neck restorer line are subjected to initial hybridization, then a short-neck japonica restorer line is subjected to alternate hybridization to obtain a wide compatibility application type japonica-indica two-line ear exposed neck genic male sterile line, the length of an ear exposed neck is 5-6 cm, and the degree of the ear exposed neck is 100%. The breeding method lays a firm foundation for transformation of Chinese hybridrice into environmentally large-area production seed planting promotion.
Owner:安徽友鑫农业科技有限公司 +1

Trestle-type floatation helical fermentation system and operating control method thereof

The invention relates to a trestle-type floatation helical fermentation system and an operating control method thereof. The trestle-type floatation helical fermentation system comprises a fermentation tank and a trestle-type floatation helical fermentation turner which is installed on the fermentation tank and can make a reciprocating movement along the fermentation tank, wherein the trestle-type floatation helical fermentation turner comprises a mobile trestle and a helical turning vehicle which is installed on a trestle cross beam of the mobile trestle and can make a reciprocating movement along the mobile trestle; the width of the fermentation tank 10-45m, and the length is 50-500m; the helical turning vehicle is provided with a turning transmission gear, a ventilation aeration device and a hollow helical turning shaft; the ventilation aeration device is provided with a ventilating duct composed of a closed inner cavity of the helical turning vehicle machine frame; the turning transmission gear is provided with a hollow transmission shaft with a closed upper end and an open lower end; the hollow transmission shaft penetrates through the ventilating duct, and the axial wall in the ventilating duct is provided with ventilating holes communicated the ventilating duct; and the hollow helical stirring shaft is connected to the lower end of the hollow transmission shaft.
Owner:GUANGXI LIYUANBAO SCI & TECH

System and method for realizing redistribution of consumer management and value

The invention relates to a management mode and a method for enterprises and consumers in a market, and relates to a method for distributing value which is generated by the enterprises through applying a system platform of the invention. The system comprises a consumer locking system, an enterprise integration management system, a consumer integration management system, an enterprise integration settlement system, a consumer integration settlement system, a consumer identity identification system, a system platform background management system of the invention, a provincial center background management system, an enterprise expand business background management system, a card sending enterprise background management system and a terminal service management system. Business license numbers or organization institution codes of the enterprises or organizations are bound with numbers of tool cards of the system platform via identity card numbers of consumers, and a series of configuration is performed so that the system and the method for redistributing the consumer management and value are realized.
Owner:邓应君

Low-antigen fermented soybean meal containing weaned-pig compound feed and preparation method thereof

The invention discloses low-antigen fermented soybean meal containing weaned-pig compound feed. The low-antigen fermented soybean meal containing weaned-pig compound feed is composed of corn, broken rice, extruded soybean, soybean meal, fermented soybean meal, imported Peru fish meal, soybean oil, a premixed compound, whey powder, calcium formate, monocalcium phosphate, table salt and choline chloride. The specially-made low-antigen fermented soybean meal is prepared by adopting a fermentation technology, and problems that weaned pigs are low in appetite, serious in dirrhea and high in material changing irritability can be solved.
Owner:日照普惠动物营养科技有限公司

Supercritical continuous synthesis method of low-cost fluorinated lithium iron phosphate positive electrode material

The invention discloses a supercritical continuous synthesis method of a low-cost fluorinated lithium iron phosphate positive electrode material. The supercritical continuous synthesis method comprises the following steps: carrying out impurity removal, filtration and reduction on pickling waste liquid in the iron smelting industry to obtain an iron source; preparing an iron source solution, a lithium source solution, a phosphorus source solution and a fluorine source solution in proportion in a stirring state, controlling the temperature of the system to be 150-220 DEG C and the pressure to be 3-5Mpa, and reacting to obtain slurry; carrying out filter pressing, washing and drying on the slurry to obtain powder; and carrying out heat treatment on the dried powder to obtain the fluorinatedlithium iron phosphate positive electrode material. According to the method, the low-cost iron-smelting industrial pickling waste liquid is selected as a raw material, and the nano fluorinated lithiumiron phosphate positive electrode material is synthesized in one step by utilizing the strong solubility and the ion migration capability of supercritical water. The obtained material is pure in phase, good in crystallinity, low in cost, simple in process, convenient to regulate and control and easy for large-scale continuous industrial production.
Owner:HUNAN YACHENG NEW MATERIAL CO LTD

Waste stone powder recycling method for sandstone producing system by wet method

InactiveCN102430467ATo achieve harmonious developmentThe moisture content is stable and qualifiedWet separationWastewaterMoisture
A waste stone powder recycling method for a sandstone producing system by a wet method is disclosed. The method comprises the steps of: 1) directly discharging the wastewater for initially washing crude materials in the sandstone producing system by the wet method; 2) recycling the stone powder contained in the production wastewater in the last stage in the sandstone producing system by the wet method; 3) recycling unnecessary and abandoned stone powder after adding the stone powder for production of product sand in the sandstone producing system by the wet method; 4) dehydrating and drying the recycled stone powder in the steps 2) and 3) with the moisture content smaller than 2%; and 5) inspecting the stone powder prepared by the step 4) and packaging the qualified and clean stone powder with the content of mica which does not exceed standard into a stone powder tank for canning and storage, wherein a pneumatic arch breaking device is arranged below the stone powder tank. The waste stone powder recycling method for the sandstone producing system by the wet method is free from building a waste storage construction plant, energy-saving and environmental friendly and utilizes the resources effectively and fulfills the harmonious development of economy, society and environment.
Owner:CHINA GEZHOUBA GROUP NO 5 ENG

Water purification type solid waste pervious concrete

The invention provides water purification type solid waste pervious concrete, wherein the cementing material of the pervious concrete is a geopolymer and is prepared by mixing a solid waste material mainly containing silicon and aluminum, high-alkalinity red mud and a small amount of an alkali activator. The pervious concrete disclosed by the invention overcomes the defects of high production energy consumption and large environmental pollution of traditional pervious concrete, has the advantages of consuming a large amount of solid wastes, reducing exploitation of natural resources, reducingthe cost and the like, and also has the functions of purifying water and effectively protecting underground water resources.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT +2

Efficient and stable domestic sewage ecological treatment device and operation method

The invention relates to an efficient and stable domestic sewage ecological treatment device and an operation method and belongs to the field of sewage treatment of environmental engineering. The efficient and stable domestic sewage ecological treatment device comprises a soil layer, a water distribution layer, a magnetic layer, a gravel layer and a water collection layer from top to bottom and further comprises a water distribution and collection system; the water distribution and collection system comprises water inlet pipes and water collection pipes; the water inlet pipes include a water inlet main pipe and a plurality of water inlet branch pipes, the water inlet main pipe is connected with a water pipe entering the ecological treatment device, the multiple water inlet branch pipes areperpendicularly connected with the water inlet main pipe respectively and located at the water distribution layer, the water inlet branch pipes include the upper-layer water inlet branch pipes and the lower-layer water inlet branch pipes, and sewage enters the water inlet main pipe, the upper-layer water inlet branch pipes and the lower-layer water inlet branch pipes in sequence; the water collection pipes include a water collection main pipe and a plurality of water collection branch pipes, and the multiple water collection branch pipes are perpendicularly connected with the water collectionmain pipe and located in a bottom groove; and the lower-layer water inlet branch pipes and the lower-layer water collection branch pipes are provided with a plurality of air inlet pipes respectivelyfor being communicated with the outside atmosphere, and the treated sewage flows from the water collection branch pipes into the water collection main pipe and then is discharged. The sewage is distributed uniformly, and the treatment efficiency is high.
Owner:TAISHAN UNIV

Ecological fish passing facility

The invention discloses an ecological fish passing facility. A lifting channel is arranged at the position, near a dam shoulder, on the land side of a barrage body, the lifting channel uses the barrage body as a main body to build barriers on the two sides, fish trapping equipment is arranged in a semi-closed region defined in the barriers on the two sides, a closed shaft is arranged on the innerlayer of the side, close to the barrage body, in a closed area of the lifting channel, and a high water level is maintained in the shaft. A slide rail system is installed in an outer-side shaft wall far away from the barrage body, when a fish pond is lifted to the top of the shaft, and water is discharged from the fish pond to the upstream of the barrage body through a drainage mechanism. When theproper buoyancy volume is designed and the buoyancy of a floating body is calculated to be close to the overall gravity, small lifting driving force is needed for realizing driving, the effect of small power driving can be achieved, the structure of the ecological fish passing facility is simple and reliable, and circulated and efficient fish passing can be achieved.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Method for advanced treatment of wastewater by using combination of catalytic ozonation and internal circulation biological filter

The invention discloses a method for the advanced treatment of wastewater. The method comprises the following steps of: 1) filtering off-standard wastewater, delivering the wastewater into a catalytic ozonation tower, and simultaneously adding ozone for contact oxidization reaction; 2) delivering the effluent of the catalytic ozonation tower into an oxidization buffer stabilization basin for stabilization; 3) and after the stabilization, delivering the effluent into a BAF basin for treatment, and delivering discharged water into a clean water basin. The method reduces the addition amount of the ozone, improves the utilization efficiency of the ozone, converts the ozone into hydroxyl radicals by using a metal catalyst, and reduces the activation energy of hydroxyl radical oxidation reaction to promote hardly biodegradable macromolecule organic substances in the wastewater to be oxidized into easily biodegradable micromolecule substances, so that the biochemical limit to refining the wastewater is broken through and the biodegradability of the wastewater is increased; and the water quality of the effluent can meet the provincial standard of Jiangsu province, namely Chemical IndustryMain Water Pollutant Discharge Standard, completely by further treatment in the BAF basin.
Owner:CHINA NAT OFFSHORE OIL CORP +2

A kind of breeding method of thermophotosensitive genic male sterile line of two lines of japonica

ActiveCN107801629BTo achieve harmonious developmentRealize cost saving and income increasePlant genotype modificationAnimal scienceFishery
The invention discloses a breeding method for a japonica two-line thermo-photo-sensitive genic male sterile line. The breeding method comprises the following steps: selecting Shuxin 8S and japonica restorer line Xinjing 326, and carrying out sexual hybridization to obtain a Shuxin 8S / Xinjing 326 F1 generation; carrying out allopatric hybridization on the Shuxin 8S / Xinjing 326 F1 generation and Xinjing 221 to obtain a Shuxing 8S / Xinjing 326 / / Xinjing 221 F1 generation; and then carrying out backcross on the Shuxin 8S / Xinjing 326 / / Xinjing 221F1 generation and Xinjing 326, and carrying out shuttlegeneration-adding nursery breeding between north and south on the obtained F1 generation according to a genetic selection method to obtain the japonica two-line thermo-photo-sensitive genic male sterile line. According to the breeding method for the japonica two-line thermo-photo-sensitive genic male sterile line, an indica male sterile line and a japonica middle-long-neck restorer line are subjected to initial hybridization, then a short-neck japonica restorer line is subjected to alternate hybridization to obtain a wide compatibility application type japonica-indica two-line ear exposed neck genic male sterile line, the length of an ear exposed neck is 5-6 cm, and the degree of the ear exposed neck is 100%. The breeding method lays a firm foundation for transformation of Chinese hybridrice into environmentally large-area production seed planting promotion.
Owner:安徽友鑫农业科技有限公司 +1

Treatment method, artificial planting and wild tending method of gentiana dahurica seeds

The invention discloses a treatment method, artificial planting and a wild tending method of gentiana dahurica seeds. The treatment method comprises the steps of: after drying the seeds, carrying outvacuum sealing on the seeds and carrying out frozen storage below minus 18 DEG C; two to five days before sowing, taking out the seeds subjected to frozen storage, and sieving to obtain full and non-impurity seeds; and carrying out water washing on the sieved seeds, then soaking the seeds in water for 2 to 4h, finally, soaking the seeds in mixed solution of gibberellins and humic acid for 12 to 36h, placing the obtained seeds into a coating machine to carry out coating, sequentially adding a bacteriostatic agent, a water-retaining agent and red clay powder into the coating machine, spraying clear water to carry out seed coating, after coating is completed, adding a repellent, carrying out uniform mixing, placing the obtained product in the room to carry out ventilation drying, and carryingout air-drying until water content is 30 to 50%. According to the treatment method, the artificial planting and the wild tending method of the gentiana dahurica seeds, which are disclosed by the invention, the modern agricultural technology is applied, mechanization is introduced, production efficiency and a standardization level of gentiana dahurica medicinal material production are improved, and production cost is reduced.
Owner:INNER MONGOLIA MEDICAL UNIV +1

Chicken red thermal resistance material as well as preparation method and application thereof

The invention provides a chicken red thermal resistance material, which is prepared from the following components in parts by weight: 20-30 parts of epoxy resin, 8-12 parts of polyamide curing agent,36-50 parts of pigment and filler, 5.8-8 parts of chicken red coloring filler, 18-28 parts of diluent and 0.5-0.6 part of coalescing agents, wherein diatomaceous earth and rutile type titanium dioxideare used as the pigment and filler; the coalescing agents comprise a defoaming agent, a flatting agent and a dispersing agent. The chicken red thermal resistance material is prepared by taking the epoxy resin as a main body, cooperatively using the pigment and the filler, i.e., the diatomaceous earth and rutile type titanium dioxide, and adding the chicken red coloring filler; under the actions of the film-forming auxiliary agents, the diluent and the polyamide curing agent, the obtained chicken red thermal resistance material is good in thermal resistance effect and convenient for construction and has a function of beautifying the environment, thus being suitable for being popularized and applied to greenways, park walkways, scenic roads, urban roads, highways, and the like.
Owner:CHANGAN UNIV

Trestle-type air flotation screw fermentation system and its operation control method

The invention relates to a trestle-type floatation helical fermentation system and an operating control method thereof. The trestle-type floatation helical fermentation system comprises a fermentation tank and a trestle-type floatation helical fermentation turner which is installed on the fermentation tank and can make a reciprocating movement along the fermentation tank, wherein the trestle-type floatation helical fermentation turner comprises a mobile trestle and a helical turning vehicle which is installed on a trestle cross beam of the mobile trestle and can make a reciprocating movement along the mobile trestle; the width of the fermentation tank 10-45m, and the length is 50-500m; the helical turning vehicle is provided with a turning transmission gear, a ventilation aeration device and a hollow helical turning shaft; the ventilation aeration device is provided with a ventilating duct composed of a closed inner cavity of the helical turning vehicle machine frame; the turning transmission gear is provided with a hollow transmission shaft with a closed upper end and an open lower end; the hollow transmission shaft penetrates through the ventilating duct, and the axial wall in the ventilating duct is provided with ventilating holes communicated the ventilating duct; and the hollow helical stirring shaft is connected to the lower end of the hollow transmission shaft.
Owner:GUANGXI LIYUANBAO SCI & TECH

Water engine

The invention discloses a water-fired engine, which comprises a cylinder block, an electric heating cylinder cap is arranged at the upper end of the cylinder body, an electrode column is arranged at the middle part of the top end of the electric heating cylinder cap, and an electrode column is arranged at the middle part of the bottom end surface of the electric heating cylinder cap. An electric wire rod, the electric wire rod is connected to the electrode column, an insulating rubber pad is provided between the electric wire rod and the electric heating cylinder cap, and the electric wire rod and the electric heating cylinder cap are bonded together by the insulating rubber pad, the A water inlet is provided at the upper end of the middle part of the left end of the cylinder body, a water nozzle is installed at the end of the water inlet, and an exhaust port is provided at the middle part of the right end of the cylinder body. Fuel consumption, saving non-renewable resources, at the same time, during use, will not produce carbon dioxide and some other gases that have a serious load on the environment, reduce environmental pollution, benefit people's health, and realize the harmonious development of man and nature. Great response to the national sustainable development strategy.
Owner:丁宝昆

Water fuel engine

The engine discloses a water fuel engine. The water fuel engine comprises a case. A first bearing accommodating groove and a second bearing accommodating groove are separately formed in the two sidesof the case. A rotary shaft penetrating through the first bearing accommodating groove and the second bearing accommodating groove is arranged on one side of the case. A cylinder body is fixedly welded to the top of the case. A piston is movably connected into the cylinder body. The top of the piston is hinged to the bottom of a connecting rod. The middle of the left side wall of the cylinder bodycommunicates with a water inlet pipe. A duckbilled spray head is mounted at the tail end of the water inlet pipe. An electrode column is mounted at the bottom of the left side wall of the cylinder body. An electric wire rod is welded to the bottom end of the interior of the cylinder body. The water fuel engine is simple in structure and convenient to use, fuel consumption in the prior art can bereduced, and non-renewable resources are saved; and carbon dioxide and other gases which severely pollute the environment are not generated in the using process, so that environmental pollution is reduced, the physical health of people is facilitated, the harmony between human and nature is realized, and a response to the national sustainable development strategy is positively given.
Owner:ZHONGSHAN CITY HENG YUE ELECTRICAL APPLIANCE CO LTD

Grass green thermal resistance material as well as preparation method and application thereof

The invention provides a grass green thermal resistance material which is prepared from the following components in parts by weight: 20-30 parts of epoxy resin, 8-12 parts of a polyamide curing agent,36-50 parts of pigment and filler, 5-7.5 parts of grass green colouring filler, 18-28 parts of diluent and 0.5-0.6 part of film-forming additive, wherein the pigment and filler is diatomite and rutile titanium pigment; and the film-forming additive is a defoamer, a flatting agent and a dispersant. By taking the epoxy resin as a main body, using the diatomite and the rutile titanium pigment as thepigment and filler in a matching manner and adding the grass green colouring filler, under the effects of the film-forming additive, the diluent and the polyamide curing agent, the obtained grass green thermal resistance material is good in thermal resistance effect, is convenient in construction, has the effect of beautifying the environment and is suitable for being popularized and applied to greenways, park sidewalks, scenic spot roads, urban roads, highways and the like.
Owner:CHANGAN UNIV

A method for advanced treatment of petrochemical wastewater

ActiveCN105060633BAvoid the problem of narrow adaptationIncrease profitMultistage water/sewage treatmentFiltrationWater quality
A method for the advanced treatment of petrochemical wastewater, comprising the following steps: a. Discharging the secondary treatment effluent of petrochemical wastewater into a sewage tank, lifting it into a coagulation sedimentation tank by an inlet pump, and simultaneously throwing flocculants PAC and PAM into a coagulation reaction tank According to the water quality conditions of petrochemical wastewater, the dosage of PAC is determined to be 10-30mg / L, and the dosage of PAM is 0.2-0.8mg / L. After precipitation, the effluent enters the primary filter to filter out the remaining suspended solids , after filtering, the effluent flows into the intermediate pool; b. The sewage in the intermediate pool is sent into the catalytic oxidation reactor through the lifting pump, and the residence time is 0.5-1.5h. At the same time, ozone is added to the water, and the ozone dosage is 20-50mg / L. Catalytic oxidation reaction; c. Catalytic oxidation reactor effluent flows through the pipeline mixer by itself, and flocculant PAC is added in the pipeline mixer. The dosage of PAC is 2-4mg / L, and the mixed sewage enters the secondary filter for further processing Micro-flocculation and filtration treatment, the filtered water enters the clean water tank to meet the discharge or reuse requirements.
Owner:PENYAO ENVIRONMENTAL PROTECTION

An efficient and stable domestic sewage ecological treatment device and operation method

The invention relates to an efficient and stable domestic sewage ecological treatment device and operation method, belonging to the field of environmental engineering sewage treatment, including a soil layer, a water distribution layer, a magnetic layer, a gravel layer, a water collection layer from top to bottom, and a distribution layer Water collection system, water distribution and collection system includes water inlet pipe and water collection pipe. The water inlet pipe is divided into water inlet main pipe and several water inlet branch pipes. The water main pipe is vertically connected and located in the water distribution layer. The water inlet branch pipe is divided into upper and lower layers. The sewage enters the water inlet main pipe, the upper water inlet branch pipe, and the lower water inlet branch pipe in sequence. The water collection branch pipe and the water collection main pipe are vertically connected and located in the bottom groove. The lower water inlet branch pipe and the water collection branch pipe are respectively provided with a number of air intake pipes to communicate with the outside atmosphere. The treated sewage flows into the water collection main pipe from the water collection branch pipe and then discharged. The sewage is evenly distributed and the treatment efficiency is high.
Owner:TAISHAN UNIV

A kind of environmentally friendly soft polyurethane foam and preparation method thereof

The invention discloses environment-friendly polyurethane flexible foams. The polyurethane flexible foams in the formula comprise the following ingredients in parts by weight: 80-90 parts of polyether polyol, 10-20 parts of ricinus oil, 4-5 parts of water, 0.20-0.30 part of an amines catalyst, 0.10-0.20 part of an organic tin catalyst, 0.5-0.2 part of an alkaline metal catalyst, 0.5-1.5 parts of silicone oil 2370 and 52-56 parts of isocyanate. The invention further discloses a preparation method thereof. By adopting a one-step method to produce the green environment-friendly polyurethane flexible foams, the production technology and steps for raw material treatment are simplified, wherein the addition amount of ricinus oil reaches to 15-20%; natural resources are made full use of, 10-20% of the usage amount of polyether polyol can be reduced, and the harmonious development between human and nature is realized.
Owner:上海馨源新材料科技有限公司
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