41results about How to "Does not pollute water quality" patented technology

The invention relates to a water soluble preservative film for fruits and vegetables and a preparation method of the preservative film. The water soluble preservative film for the fruits and vegetables is mainly prepared by the following materials in percentage in weight: 50 to 80% of polyvinyl alcohol with alcoholysis degree of less than 90%; 10 to 30% of polyhydroxy plasticizer, 1 to 5% of auxiliary film forming agent, 3 to 8% of low temperature antifreeze agent, 3 to 10% of adsorbent filling agent and 0.3 to 2% of film-forming adding additive. The preparation method comprises the following two steps of: 1, after metering contents of components of the preservative film in the formula, obtaining a uniform aqueous solution with concentration of 15 to 25% in water; and 2, uniformly casting the prepared solution on a clear steel band, and drying the solution to obtain the film through a dried drying tunnel with temperature of 120 to 180 DEG C. The preservative film has a high barrier property against oxygen, carbon dioxide and nitrogen and the like, and has a high bidirectional permeable exchange capacity for steam, thereby guaranteeing free breathing and water exchange of the fruits and vegetables in a preserving process.

The invention discloses a water borne floating bed, the main body of which is a foam board. A plurality of taper base holes are arranged on the foam board according to space requirement of the rice growth line distance. A taper plastic retainer cap is installed in the taper base hole. Small holes are provided on the cup bottom and the cup wall of the taper plastic retainer cap. The invention also discloses a method for planting rice on the floating bed. The invention develops the novel technology for planting rice in the natural water area, decreases the planting costs, alters the station of the paddy field rice and the water culture rice depending on the fertilizer and pesticide, saves water, electricity and labor force and purifies the water and environment.

The invention discloses green and all-natural compound plant-type efficient fruit and vegetable washing salt which comprises the following ingredients: sodium chloride, a sponge gourd extract and an auxiliary material. Powdered fruit and vegetable washing salt is visually similar to edible salt and is easily eaten by mistake. In case of mistaken eating, a stain removal ingredient in the common washing salt can cause stomachache, vomiting and diarrhea symptoms, and results in harms to a human body. The washing salt adopts a pure biomaterial, namely the sponge gourd extract, as a main material for removing pesticide residue. Under a synergistic effect of deemulsification of the salt and an auxiliary material assistant, the sponge gourd extract exerts cleaning effects on dirt such as oil stains, fruit wax, the pesticide residue; deep cleaning of the surfaces of fruits and vegetables is achieved; potential safety hazards during eating of the fruits and the vegetables are solved; the fruit and vegetable washing salt is a green and natural plant type formula, is safe, nontoxic and harmless to the body after the mistaken eating; the ingredients are all natural and biodegradable; the water quality is not polluted; no secondary pollution is caused; a preparation technology is simple and practicable; and the fruit and vegetable washing salt is safe, and has no side effects and a better popularization value.

The invention discloses a tropical fish feed, and a preparation method thereof. The tropical fish feed comprises following ingredients, by weight, 27 to 32% of imported white fish meal, 15 to 20% of corn powder, 6 to 8% of wheat germ powder, 10 to 12% of defatted soybean powder, 8 to 10% of spiral seaweed powder, 10 to 12% of shrimp meal, 3 to 5% of yeast, 2 to 4% of composite vitamin, 1 to 3% of mineral substance, and 1 to 2% of carotenoid. The preparation method comprises following steps: (1) the ingredients are weighted according to the mass ratio above, and are smashed in a pulverizer so as to obtain raw material mixed particles; (2) purified water is added into the raw material mixed particles, an obtained mixture is quickly stirred to be uniform, and raw material mixture paste is obtained; (3) the raw material mixture paste is delivered into a sealed container for fermentation; and (4) the fermented raw material mixture paste is delivered into a granulator for processing so as to obtain the granular tropical fish feed. The tropical fish feed is simple for preparation, is balanced in nutrition, possesses color increasing effect, and is capable of increasing immunity of tropical fish, and improving ornamental value of tropical fish; feed particles are uniform; impurities are few; and water pollution is not caused.

The invention discloses a phase-change heat-storage energy-saving electric water heater and belongs to the technical field of household appliances. The water heater comprises a shell, an insulating layer, an inner tank, a magnesium rod, a sewage draining exit, a hot water outlet, a cold water inlet, a leakage protection switch, a temperature controller and an electric heating pipe, wherein the insulating layer between the shell and the inner tank is a composite insulating layer which consists of a polyurethane foam heat-preservation layer and a phase-change heat storage layer; the energy saving of a water storage electric water heater is realized by the double insulation of heat storage and heat insulation; the polyurethane foam heat-preservation layer is positioned between the shell and the phase-change heat storage layer which is tightly attached to the outer side of the inner tank; the composite insulating layer is 25 to 45mm thick; and the thickness ratio of the phase-change heat storage layer to the polyurethane foam heat-preservation layer is 0.4 to 0.8. The electric water heater has the advantages of capability of improving the energy saving level in a water storage and heat preservation process and reducing power consumption, high heat utilization ratio, safety and low cost, and is environmentally friendly and convenient for operation.

The invention relates to fish attracting bait special for finishing, in particular to fishing bait for freshwater fish. The fishing bait is prepared from the following raw materials in part by weight: 10 to 20 parts of soya bean, 10 to 20 parts of corn flour, 5 to 10 parts of sesame, 10 to 20 parts of fish meal, 10 to 20 parts of shrimp meal, 1 to 5 parts of musk, 5 to 15 parts of honey, 1 to 10 parts of monosodium glutamate, 1 to 10 parts of saccharin, 1 to 10 parts of vitamin B and 1 to 5 parts of essence. The bait of the invention has rich nutrient components, can stimulate the appetite of the finish, has the characteristics of quick fish gather and non-diffusion when eating for long time, can greatly increase the fishing rate of a fisherman, meanwhile does not pollute the water, and can promote the growth of the freshwater fish. The fishing bait has the advantages of convenient use and easy storage. In addition, the bait of the invention can be used as special feed for breeding the fish; therefore, the bait has certain meanings in the aspect of freshwater fish cultivation and has considerable market application prospect.

The invention discloses a trenchless large-caliber water supply pressure pipeline rehabilitation construction method. The trenchless large-caliber water supply pressure pipeline rehabilitation construction method comprises the steps that the two sides of a damaged pipeline are cut up; a working pit and a receiving pit are excavated in the head end and the tail end of the damaged pipeline correspondingly; a pipe jacking device is arranged in the working pit, lining pipes are pushed into the damaged pipeline through the pipe jacking device, glass reinforced plastic sand pipes and steel pipes arecombined to serve as the lining pipes, and sealing joints are arranged between the lining pipe sections, wherein the steel pipes are adopted as the lining pipes at the head end and the tail end of the damaged pipeline and pipe sections connected with branches, and after pushing in of the lining pipes is completed, clearances between the lining pipes and the damaged pipeline are blocked. The construction method is relatively simple, mature in process, economical and practical, and the rehabilitated pipeline has the advantages of being small liquid conveying resistance, good in corrosion resistance, long in service life and free of water quality pollution.

The present invention discloses a duckweed / sweet corn stigma composite catfish feed, which is characterized in that the catfish feed is made from the following raw materials by weight: 17-19 parts of black rice flour, 18-20 parts of millet flour, 16-18 parts of sorghum flour, 11-13 parts of potato juice, 4-6 parts of glucose, 17-21 parts of duckweed, 12-14 parts of sweet corn stigma, 13-15 parts of dried small shrimps, 8-10 parts of quail meat, 14-16 parts of soybeans, 4-8 parts of sesame, 0.02-0. 04 part of musk, 0.1-0.2 part of monosodium glutamate, 1.2-3.2 parts of grape seed oil, 0.1-0.3 part of phlomis mongolica, 0.2-0.4 part of indigowoad root, 0.2-0.5 part of ginkgo leaf, 3-6 parts of accessory ingredient and a proper amount of water. According to the present invention, the composite catfish feed effectively compounds a plurality of components and provides balanced nutrition. The added duckweed and sweet corn stigma can stimulate the appetite of fish and is capable of gathering fish rapidly and attracting fish for a long time. The composite catfish feed is convenient to use, easy to store and has a very considerable market prospect.

The invention discloses a special feed for lion head goldfish and a preparation method thereof. The special feed is composed of the following components in parts by weight: 25-27 parts of water flea, 20-22 parts of earthworm, 23-26 parts of budworm, 15-17 parts of skinworm, 11-13 parts of tubificidae, 7-9 parts of sesame, 4-6 parts of duckweed, 1-3 parts of spirulina, 6-8 parts of flour weevil powder, 1-3 parts of water quality purification bacteria, 2-4 parts of vitamin A, 2-6 parts of vitamin E and 20-30 parts of water. The special feed disclosed by the invention is rich and comprehensive in nutrients, free of pigment, easy to digest and absorb and capable of ensuring the healthy growth of the lion head goldfish, and the water flea contained in the formula prevents the metabolite of the lion head goldfish from polluting water.

The invention relates to a production process of a single-handle basin plastic tap main body. The process comprises the following steps: placing an insert, folding a model, injecting materials, injecting air, keeping the pressure, releasing the air, cooling, unfolding the mold and taking out a part. Through the above procedures, the produced plastic tap can not pollute water quality. The injection process does not need too high pressure. Therefore the module has a simple structure and long service life, needs no large injection machine, and has low loss. Since part high pressure air is discharged in the injected part, the material is saved and the construction cost is low.

The invention relates to a method for cultivating young rapana venosa in rapana venosa artificial breeding. The method is characterized in that firstly, after rapana venosa larvae with the size larger than 1200 micrometers and to be metamorphosed through attachment are collected, then placed in a container containing 10L-12L of a 0.2%-0.3% KCI seawater solution and steeped for 6 hours to 8 hours, so that the rapana venosa larvae is directly metamorphosed without attachment and the young rapana venosa is obtained; secondly, the young rapana venosa is placed in a floating net cage with the length of 5m-6m, the width of 2m-3m and the height of 0.3m-0.4m and made of a polyethylene screen with 60 meshes to 80 meshes, the size of the floating net cage is determined, and the four sides of the floating net cage have the buoyancy force; thirdly, the rapana venosa is fed on oyster paste twice to three times every day, the water level is kept low when feeding is conducted, the floating floating net cage is sunk to the bottom of the pool, bait sunk to the bottom of the floating net cage and attached to a base is eaten by the young metamorphosed rapana venosa, and after feeding is conducted for 3 hours to 4 hours, water is added, the water level rises, the floating net cage is floated, the bottom of the pool is absorbed, and therefore feces and the residual bait remaining on the bottom of the pool are thoroughly cleaned. According to the method for cultivating the young rapana venosa in rapana venosa artificial breeding, the problems that according to a method for indoor rapana venosa breeding, the use ratio of the fed carnivorous oyster paste bait is low and water is prone to pollution are solved and due to the fact that the residual bait and the feces are cleaned in time, water is not polluted, the young rapana venosa lives in water with high quality from beginning to end, the survival rate of the young rapana venosa is high, the breeding amount is improved by over 60%, and the cultivated young rapana venosa is strong.

The invention provides an ecological mixed breeding method of a pond mainly used for breeding Sepia esculenta. The ecological mixed breeding method comprises the following steps: pond preparation: excavating a deep ditch in the middle of the pond, adding gentle slopes on the inner side of the periphery of the pond, covering each gentle slope by using a layer of geotechnical cloth, and paving PVC oxygenation pipelines on the bottom of the pond; stocking Meretrix meretrix Linnaeus seedlings in the pond when the temperature of water in the pond reaches 7-8 DEG C in the spring; stocking Exopalaemon carinicauda and shrimps with eggs when the temperature of the water in the pond rises to be 12-13 DEG C; stocking Sepia esculenta larvae after the temperature of the water in the pond rises to be 14-16 DEG C; and then feeding with baits in a combined manner. According to the ecological mixed breeding method provided by the invention, mixed breeding is implemented by ecological complementarity of the Sepia esculenta, the Exopalaemon carinicauda and the Meretrix meretrix Linnaeus, the Meretrix meretrix Linnaeus purifies water, the Sepia esculenta can eat the Exopalaemon carinicauda, the pond has Exopalaemon carinicauda groups in different stages, and requirements of the Sepia esculenta to live baits are met; and the Sepia esculenta eats sick and weak Exopalaemon carinicauda individuals, and spreading of shrimp diseases is controlled effectively, so that the purposes of high yield, high efficiency and environmental protection are achieved.

The invention belongs to the field of polyurethane foam sealants and in particular relates to a colored polyurethane foam sealant as well as a preparation method and application thereof. The colored polyurethane foam sealant is prepared from the following components in parts by mass: 30 percent to 40 percent of paraffin wax, 10 percent to 30 percent of polyether polyol, 20 percent to 40 percent of polymethylene polyphenyl isocyanate (MDI), 2 percent to 5 percent of a stabilizer, 2 percent to 5 percent of a catalyst, 2 percent to 5 percent of a solvent and 5 percent to 10 percent of pigment. The preparation method of the colored polyurethane foam sealant comprises the following steps: mixing the components in an environment of 20 DEG C to 50 DEG C and stirring until all the components are completely dissolved; adding a mixture and the solvent into a pressure-resisting container at a certain ratio under the condition that dimethyl ether gas is fed, and sufficiently shaking to obtain a finished product. The colored polyurethane foam sealant has the beneficial effects that the colored polyurethane foam sealant is used for rockworks, artificial stones and artificial driftwoods in the field of manufacturing and decoration and the field of aquascapes; the pigment is blended so that the color is very consistent to a real landscape and the landscape is vivid; the colored polyurethane foam sealant is safe and reliable and has strong plasticity, so that the aquascape cost is reduced.

The invention discloses a detergent taking a luffa extract as a raw material. The detergent comprises the following components: sodium chloride, a luffa extract and auxiliary materials. According to the invention, pure biomass luffa extract is used as a main material for removing pesticide residues, and under the synergistic effect of a salt demulsification effect and auxiliary material additives,the cleaning effect of the luffa extract on dirt such as oil stains, fruit wax, pesticide residues and the like is exerted, so that deep cleaning of the surfaces of fruits and vegetables is achieved,and potential safety hazards during eating of the fruits and vegetables are eliminated; and the detergent provided by the invention is an environmentally-friendly natural plant formula, is safe and non-toxic, is harmless to the body after being mistakenly eaten, contains pure natural components, can be biologically degraded, does not pollute the water quality, does not cause secondary pollution,is simple and feasible in preparation process, is safe, does not have side effects, and has a high popularization value.

The invention discloses a microbial fermentation method for preparing insect soluble pulp from hermetia illucens larvae. The method comprises the following steps: beating hermetia illucens old maturelarvae into fresh insect pulp; adding 0.5% of high-activity compound bacteria into the fresh insect pulp; and carrying out fermentation and enzymolysis composite reaction at 30-35 DEG C to prepare fluid insect soluble pulp. The method has the advantages that: scientific matching is achieved, the insect soluble pulp is close to natural bait, a foundation is laid for providing a healthy body for aquatic products in the whole process, the survival rate is increased, and the bait falling coefficient is low; high-quality amino acid is rapidly supplemented and absorbed and is a substitute raw material for crude protein coating, digestive enzyme conversion is not needed, the liver load is reduced, and the liver atrophy phenomenon is eliminated; and the water quality is stabilized, the water quality is not polluted, algae pouring is not easy, the heavy water color does not need to be worried too much, and zymophyte organic acid has a certain detoxification effect on algae, nitrite, hydrogen sulfide, chloride ions and the like.

The invention discloses a bacteriophage for preventing and treating a prawn vibrio parahaemolyticus disease and an expanding culture method thereof. Vibrio parahaemolyticus infected by South American white prawn are used for successfully screening out a strong lytic bacteriophage in seawater, titer of the bacteriophage is up to 1010 to 1012pfu / mL, fermentation period is 8 to 12h, treatment effects are obvious, and the bacteriophage for preventing and treating the prawn vibrio parahaemolyticus disease is of great significance for treatment of diseases causes by the vibrio parahaemolyticus and development of bacteriophage microecological preparations. A storage unit code of the bacteriophage is China Center for Type Culture Collection, address is China Center for Type Culture Collection in Wuhan University Campus, Wuchang Luojia Mountain, Wuhan City, preserved date is December 9, 2016, preservation number is CCTCC NO: M 2016740, a preservation test result is survival, name is vibrio parahaemolyticus bacteriophage VP11, and classification is named as Vibrio parahaemolyticus bacteriophage VP11.

The invention discloses a device for monitoring a water softener resin regeneration salt consuming state. The device is characterized by comprising a plurality of groups of infrared sensors, a controller and a display alarm device, wherein each infrared sensor comprises an infrared emitter and an infrared receiver which are mutually paired, all the groups of the infrared sensors are distributed from top to bottom, and the controller is connected with all the groups of the infrared sensors and can control the display alarm device to work according to the signals fed back by all the groups of the infrared sensors. In actual work, the infrared emitters can emit infrared signals in real time; when the corresponding infrared receivers receive the infrared signals, the controller can display thesalt consuming state on a display screen in real time by treating the infrared signals; when the receiver of the lowest group of the infrared sensor receives the infrared signals, the controller candisplay salt deficiency on the display screen by treating the infrared signals and give out sound-light alarm.

The present invention discloses seawater pond penaeus orientalis breeding bionic bait in young penaeus orientalis period and a manufacturing method thereof, belongs to the technical field of aquaculture feeds, and aims to address the problems that the existing seawater pond penaeus orientalis breeding baits in the young penaeus orientalis period are not adapted to the predation characteristics of the young penaeus orientalis, the feed is low in utilization rate, and the bait residue rate is high. The bionic bait is prepared by using the following raw material components: soybean meal, peanut meal, cottonseed protein powder, guar meal, bread flour, red wheat full flour, corn gluten meal, beer yeast, lysine, immune polysaccharides, bacillus licheniformis, lactobacillus plantarum, Peruvian fishmeal, squid meal, shrimp kernel meal, plasma protein powder, fish oil, fish dissolved pulp powder, egg yolk powder, natural betaine, compound vitamins, mineral premix and shrimp flavor essence premix. The raw material component recipe is reasonable and practicable, and the bait is suitable for the feeding of the young penaeus orientalis in the growing of a body length of 2-5 cm in the seawater pond penaeus orientalis breeding.

The invention relates to a crab feed. The crab feed is prepared from, by weight, 45-60 parts of ass meat, 10-15 parts of peanut cake, 5-9 parts of trepang, 15-20 parts of scallop muscle, 0.2-0.5 parts of woodlouse powder, 1-3 parts of pumpkin seed powder, 2-5 parts of yellow wine, 2-4 parts of camellia-seed oil, 1-3 parts of toona sinensis leaves, 2-5 parts of salt and a proper amount of water. The crab feed is more beneficial to the growth of crabs in the growth period, more appropriate for the protection of water quality, fewer in floating dregs in the water, clearer in water, more suitable for the growth of crabs and capable of being applied widely to crab feeding.

The invention discloses the application of a euphausia superba powder in preparation of a guppy color enhancing feed and the puppy color enhancing feed. The color enhancing feed is prepared through the following components in percent by mass: 5-75% of the euphausia superba powder, 1-20% of soybean protein concentrate, 1-8% of a barley pest powder, 1-8% of a cricket powder, 1-20% of self-raising flour, 2-10% of a beer yeast powder, 1-10% of starch, 4-20% of fairy shrimp, 2-4% of spirulina, 1-4% of soyabean lecithin, 2-4% of glycine betaine, 1-3% of soybean oil, 1-3% of a vitamin mixture, 1-5% of a mineral element mixture, 1-5% of an immunopotentiator, 0.1-4% of bacillus subtilis, 1-3% of rose, 0.5-2% of rhodopseudomonas palustris, and 2-4% of prodigiosin. The feed shows good color developing and enhancing effects on guppy; the flesh of guppy can be obviously improved after 5 days and the color is not faded; the feed is high in attracting performance, and capable of improving the immunity, the stress resistance and the survival rate.

The invention discloses cofferdam equipment applied to a diversion canal and an assembly method thereof. The cofferdam equipment comprises a longitudinal cofferdam, transverse cofferdams, a power boat, anchoring devices and supporting trusses, wherein the longitudinal cofferdam is pressed on a canal bottom lining board; the transverse cofferdams are pressed on a canal slope lining board and are separately connected to the two ends of the longitudinal cofferdam to form a U-shaped cofferdam; the restored board to be lined of the diversion canal is positioned within an envelope range of the U-shaped cofferdam; the two supporting trusses are separately mounted between the two transverse cofferdams; the two or more anchoring devices are fixedly arranged on a canal embankment; each anchoring device is connected to the longitudinal cofferdam or the transverse cofferdams through anchoring chains; and the power boat is positioned at the water side of the longitudinal cofferdam. The longitudinalcofferdam and the transverse cofferdams are assembled on water, are injected with water to sink, are positioned by the anchoring chains, float after water pumping, and are dismounted, so that zero emission of the canal can be realized.

The invention discloses application of fibroin and a fruit and vegetable storage method. The fibroin is applied to the preparation of a fruit and vegetable anti-cold-injury agent. The fruit and vegetable storage method comprises the following step that the fruit and vegetable anti-cold-injury agent containing the fibroin is applied on the surfaces of fruits and vegetables. According to the scheme,the fruit and vegetable anti-cold-injury agent has a good application effect on the storage of bananas and other fruits and vegetables. According to the technical scheme, the utilized fibroin can form a layer of edible protein film on the surfaces of the fruits and vegetables, the stable structure and excellent mechanical barrier characteristics of the film can be kept due to the fact that the fibroin contains a large number of hydrogen bonds and disulfide bonds and has hydrophobic interaction force, and the fibroin can significantly inhibit the decrease of cell membrane lipids in fruit peeltissue, thereby reducing the symptoms of cold injuries. The fibroin is natural, nontoxic and harmless, is easily soluble in water, and does not need to be treated with other chemical additives, therefore, after the fruit and vegetable anti-cold-injury agent is adopted, no harmful chemical substances can remain on the surfaces of the fruits and vegetables, so that the fruits and vegetables are safer and healthier, and the edible film formed by the fibroin is completely soluble in the water and does not pollute the water after use.

The invention discloses an application of euphausia superba powder in preparing color-enhancing feed for gold arowana and the color-enhancing feed for the gold arowana. The color-enhancing feed is prepared from the following components in mass percentage: the euphausia superba powder 5%-70%, soy protein concentrate 1%-20%, cicada pupa powder 1%-7%, barley pest powder 1%-10%, cake flour 5%-24%, beer yeast powder 2%-10%, starch 1%-10%, brine shrimp 4%-20%, spirulina 2%-4%, soybean phospholipid 2%-4%, betaine 2%-4%, soybean oil 1%-3%, a vitamin compound 1%-2.5%, a mineral element compound 2%-5%, an immunoenhancer 1%-5%, bifidobacteria 0.5%-5%, plum flowers 0.5%-2%, rhodotorula glutinis 0.1%-1% and persimmon red pigment 0.1%-1%. The color-enhancing feed has good color-developing and color-enhancing effects on the gold arowana and fish bodies appear a bright color after 7-day eating and the color does not fade. The feed has good intake stimulating performance and can enhance immunity, stress resistance and survival rates.

The invention provides a capsule pressure-stabilizing tank. The tank comprises a tank body and an inner bag arranged in the tank body. The top of the tank body is welded with an upper seal head and the bottom is welded with the lower seal head; the inner bag is used for separating the tank body into an air chamber and a water chamber; the bottom of the tank body is provided with a flange and the lower seal head for welding and fixing; and the middle of the flange plate is welded with a water inlet and outlet connecting pipe communicated with the water chamber, and the flange plate and the flange bolt are connected to realize sealing. The tank only provides a flange at the bottom, which has low cost and reduces the risk of leakage of the top flange with good sealing and no air leakage, which saves space. The tank is convenient fastening with low cost, which does not pollute water quality, and is convenient to charge and discharge; the tapered inner capsule can reduce the stress fatiguecaused by the pressure increase of the inner capsule and improve the service life of the inner capsule.

The invention relates to a greenhouse industrialized chili seedling breeding method, and belongs to the technical field of plant cultivation. The invention provides a method and technology for all cultivation processes from seeding to a seedling period of a planted chili plant, and the specific steps include a 1 / 2 MS medium aseptic culture technology in a seed germination period and an in-vitro seedling culture technique in the seedling period. The method is applied to breeding of a large number of chili seedlings in a greenhouse, efficiently reduces plant morbidity through a sterile clean environment, and bred seedlings have advantages for pot planting and hydroponic colonization.

The present invention discloses a pressure-compensating water-supplying device which does not additionally affect the hydraulic pressure of the common ductwork. The device comprises the following components: at least one equipment body, a water inlet valve, a water outlet valve, a bypass one-way valve, a first and a second ventilation valves, a low pressure restraining instrument (8), a water shortage protective device, a water discharging pressure sensor and at least one control device. The method comprises the steps of detecting the pressures of the water inlet valve and the water outlet valve by the control device through the low pressure restraining instrument and the like for generating the data information of the water pressure of the water inlet valve and the water outlet valve and the like, and transmitting the information to the control device through the signal cable for controlling. The device uses a totally sealed electric underwater pump to directly take water from the common ductwork for pressurization without the water pool, the water tank or the voltage stabilization of the voltage stabilization pot. The invention has the advantages of realizing voltage-stabilizing water supply without additionally reducing the pressure of the common ductwork, no pollution to the water quality, automatic running, more energy-saving and earth-saving.

The invention relates to an ecological polyculture method for mainly raising golden squid in a pond. The steps include: clearing the pond, digging a deep ditch in the middle of the pond, increasing a gentle slope on the inner side around the pond, covering the gentle slope with a layer of geotextile, and laying PVC reinforcement on the bottom of the pond. Oxygen pipeline; when the pond water temperature reaches 7-8°C in spring, stock clam seedlings in the pond; when the pond water temperature rises to 12-13°C, stock white shrimp with eggs; when the pond water temperature rises to 14-16°C After that, the golden squid larvae are stocked; then the bait combination is fed. The present invention utilizes the ecological complementarity of golden squid, white prawns and clams to carry out polyculture, clams purify water quality, golden squid can feed on white prawns, and there are groups of white prawns in different stages in the pond, which satisfies the requirements of golden squid for live bait demand; and the golden squid eats mostly sick and weak white shrimp individuals, which effectively controls the spread of shrimp diseases, thereby achieving the goals of high yield, high efficiency and environmental protection.

The invention relates to the technical field of water supply pipes, in particular to a steel-concrete reinforced plastic water supply pipe, a water supply pipe system and a construction method of the water supply pipe. The steel-concrete reinforced plastic water supply pipe comprises a concrete water pipe body, the outer wall of the concrete water pipe body is connected with a steel cylinder in a wrapping mode, the outer wall of the steel cylinder is wrapped with a first plastic plate, the inner wall of the concrete water pipe body is wrapped by a second plastic plate, the two ends of the concrete water pipe body are wrapped by third plastic plates, the third plastic plates are connected with the first plastic plate and the second plastic plate in a sealed mode correspondingly, at least one layer of third prestressed steel wires is arranged in the concrete water pipe body, and the third prestressed steel wires are connected with the second plastic plate. According to the reinforced concrete reinforced plastic water supply pipe, it can be guaranteed that the plastic pipe does not pollute water quality, and is good in anti-seepage performance, resistant to corrosion, long in service life and small in frictional resistance of water flow in the pipe, and the reinforced concrete reinforced plastic water supply pipe has the advantages of being large in opening diameter, high in pressure resistance and low in cost.