737results about How to "Beautify environment" patented technology

The invention discloses a method for biologically remediating a water body and soil comprehensively utilizing resources. The method comprises the steps: (1), determining main pollutants in a selected land area or water body area; (2), selecting to plant and / or cultivate fast-growing herbaceous plants, fast-growing alga, trees, bushes, fungi or microorganisms with high remediation efficiency in the selected land area or water body area; (3), harvesting or collecting the fast-growing herbaceous plants and the fast-growing alga after growing to reach a suitable height or size; (4), concentratedly processing the harvested or collected fast-growing herbaceous plants and the fast-growing alga, and comprehensively utilizing to prevent the pollutants from dispersing; (5), remediating an eutrophic water body by adopting an artificial floating island; (6), remediating a heavy metal polluted water body by confining floating plants; (7), repairing cadmium and zinc polluted soil by mixed-cropping festuca arundinacea and bluegrass; (8), remediating polycyclic aromatic hydrocarbons (PAHs) polluted soil by mixed-cropping alfalfa and italian ryegrass; and (9), extracting and recovering silver from silver-containing wastewater remediation plants.

The invention discloses a window-plate type alarming rail and a manufacturing method thereof. The window-plate type alarming rail mainly comprises a front plate, side plates and a bottom plate, and is characterized in that the side plates are upwards arranged at two ends of the bottom plate; the movable front plate is arranged at the front sides of the bottom plate and the side plates; the rear sides of the two side plates protrude out of the rear side of the bottom plate by a certain distance; the front plate, the bottom plate and the left and the right side plates form a semienclosed basket body; the basket body is also provided with an electronic switch which is connected with alarming equipment. The window-plate type alarming rail disclosed by the invention is arranged at the outer side of the window, has anticlimbing and antitheft functions, also can prevent persons and objects at high altitude from falling accidentally, has no influence on life escape and disaster relief, and can be widely used for various building floors.

The mixed planting material for rocky slope is one kind of composition prepared by mixing at normal temperature soil, organic matter, composite fertilizer, water preserving agent, cement, pH regulator, plant seed and water. The construction process in rocky slope includes trimming slope, setting anchor rods, hanging net, spraying, seeding, covering and maintenance. The present invention makes it possible to green rocky slope fast at relatively lower cost.

The invention relates to a three-dimensional reinforced rigid-soft composite ecological retaining wall and a construction method. The retaining wall is characterized by comprising an upper portion soft ecological retaining wall body and a lower rigid retaining wall body, wherein the upper portion soft ecological retaining wall body and the lower rigid retaining wall body are connected through anchor bars. All layers of filling materials of the upper portion soft ecological retaining wall body are connected through connecting buckle parts, and water draining pipes, the connecting and fixing ends of horizontal ribbing bodies and inclined tie bars are evenly arranged on the lower rigid retaining wall body. A wall heel of a foundation of the retaining wall extends backwards to the edge of a stable soil body, vertical reinforcing piles are arranged at the bottom of the retaining wall, the horizontal ribbing bodies are laid in the filling materials behind the retaining wall, the wall toe of the retaining wall is filled back with a wall foot pressing soil body, and vertical ribbing bodies are vertically arranged at the connection position between the filling materials behind the retaining wall and an original soil body. The retaining wall structurally combines the advantages of a rigid retaining wall and the advantages of a soft retaining wall, achieves ecological slope protection, reduces pressure of soil behind the retaining wall, enhances structural integrity and has good technical and economical benefits.

The invention discloses a hard reinforced concrete revetment slope biological repairing method, which is characterized by comprising the steps of: roughing a concrete revetment and constructing drainage ditches at set intervals; digging a water collecting tank on one side of the cross of the revetment and a road, reserving an opening at the joint of the drainage ditch and the water collecting tank, and constructing a watertight concrete overflow bank; filling gravels in the water collecting tank and the drainage ditches; and welding earthwork grids by high-density polyethylene stripes on the protection slope, laying gravel cushion coats in the earthwork grids, and finally pouring biological slurry. The method has the advantages that: the whole project is stable and safe; rain flows into the water collecting tank and passes through grave areas, non-watertight sand-free concrete, a slope cushion coat, plant roots and the like to seep into rivers, so water quality is improved to a relatively large extent; when rainfall runoff is overlarge, the rain overflows from the overflow bank and passes through the graves of the drainage ditches, so the water quality is also purified to a certain extent, meanwhile the slope is protected; the biological slurry poured onto the slope is prepared from biological materials, and has certain anti-erosion strength and can be used as a substrate for plant growth, so the cost is low and the operation is simple.

The invention discloses a sewage purifier, which comprises polyhydroxyalkanoate, diatomite, humic acid, a bioactivator, inorganic metal salt and other substances. The invention also discloses a sewage purification method by utilizing the sewage purifier. A completely biodegradable material polyhydroxyalkanoate is used as a sustained material of the bioactivator, and the completely biodegradable material is slowly degraded and releases the bioactivator so as to realize the long-term high-efficiency purification function of the bioactivator; and by combining the effects of aquatic plants, phosphorus, nitrogen, polycyclic aromatic hydrocarbon and heavy metals in the sewage are purified and treated, so the sewage purifier has better sewage treatment effect.

The invention provides a high-level drift water channel system, relating to an above-water slideway, in particular to a high-level drift water channel system used for sports or leisure. The high-level drift water channel system is provided with a water guide channel device, a cockboat, at least a water pump spraying device and an above-water platform device; the water guide channel device is provided with a water guide channel and a vertical column; the cockboat is provided with a wheel and a spraying push-force device; the cockboat is arranged in the water guide channel; the water pump spraying device is provided with a water accumulation channel, a water pump, a pipeline, a nozzle or a water outlet; the water accumulation channel is connected with a water channel; the water pump is connected with the water accumulation channel; the water pump is connected with the nozzle or the water outlet on the water guide channel by the pipeline; one water pump spraying device is provided with at least one nozzle or water outlet; the above-water platform is arranged on the water surface and is used for fixedly supporting the vertical column of the water guide channel; and the above-water platform device is provided with a floating body, a platform, a pile column and a lifting power mechanism.

The invention relates to revetment combination system that has cutoff purifying function to the river rainfall runoff surface contaminating material. It sets non-sand concrete curbstone at the intersection of road and bank slope, a catch water channel is set at one side of intersection road, where coarse sand bedding is paved. Crushed stones are filled in the channel, and the top of channel is sealed by non-sand concrete. On the band slope toward water side paves coarse sand, crushed stone of different thickness, and ecology brick. Cement laid stone masonry breast wall is set at basal slope, and growing plant at the bank slope. It increases the residence time for runoff in the system and takes purification to it.

The invention discloses a source rainwater purification and storage system based on low impact development. The source rainwater purification and storage system comprises a permeable pavement road and a concave herbaceous field. The permeable pavement road and the concave herbaceous field are connected, the bottom of the concave herbaceous field is provided with a bioretention layer, the bioretention layer comprises a biological layer, a sand layer and a gravel layer that are distributed in order, the bottom of the gravel layer is provided with a rainwater collection tank, the joint between the gravel layer and the rainwater collection tank is externally provided with a geotechnical cloth, the rainwater collection tank is composed of several rainwater collection modules, the upper parts of the tank wall on two sides of the rainwater collection tank are respectively provided with an overflow pipe, the rainwater collection tank is equipped with a water level monitoring device, by adopting a module mutual splicing method, the construction becomes convenient and the construction period is short, the collected rainwater can provide water needed for growth of green plants on the ground for a long time, natural rainwater is effectively utilized to reduce the consumption of the tap water employed by people to irrigate plants. At the same time, retention rainwater is stored to reduce surface runoff, thus being conducive to construction of sponge cities and protection of the ecological environment.

The invention discloses a reclaimed water treatment system combining an upflow aerating biological filter with horizontal underflow artificial wetland. The system consists of the upflow aerating biological filter and the horizontal underflow artificial wetland; the upflow aerating biological filter comprises a water inlet guide tube positioned at the bottom of the filter; a filter plate, a supporting layer, an A section filler area, a B section filler area and a water outlet area are sequentially arranged above the water inlet guide pipe; a communicating water pipe is mounted on the water outlet area, and communicated with a regulating tank of the horizontal underflow artificial wetland; an aerator pipe is led out of the supporting layer; the regulating tank and a matrix area parallel to the regulating tank are arranged at the lower layer of the horizontal underflow artificial wetland; the matrix area sequentially comprises a macadam area, a steel slag area, a zeolite area and a water outlet gravel area from left to right; the water outlet gravel area is equipped with a water outlet pipe; and a soil covering layer and aquatic plants are arranged at the upper layer of the horizontal underflow artificial wetland. With the adoption of the system, on-site treatment and utilization of sewage are achieved; the sewage treatment process flow is simplified; and operation and management costs are lowered.

The invention relates to a method for restoring petroleum-polluted saline alkali soil by ryegrass and high efficiency microbes. The invention belongs to the technical field of environment restoration, and relates to a method for restoring soil by microbe microbial inoculums and plants. The method comprises the following steps: pretreating soil, preparing different microbial inoculums, planting ryegrass, and managing according to the normal requirements for plant growth after sprouting. Microbes and microbial inoculums can cooperate to perform the synergistic action; the addition of the microbe microbial inoculums can promote the plant growth, improve the structure of soil and reduce the pH value of soil, so that environmental conditions which are beneficial to pollutant degradation are formed in the soil. Ryegrass and other garden plants have the functions of promoting petroleum hydrocarbons to degrade and greening the landscape, and can be used as a feed on the premise that the pollutants of the reaped ryegrass do not exceed the standard, thereby having certain economic benefit. The invention enhances the degrading effect of petroleum hydrocarbons, and the degrading rate of petroleum hydrocarbons after five-month growth, can reach 57%. The technique can reduce plowing required by the restoration which only uses microbes and supplement the measures for microbial inoculums, and has favorable effect of removing petroleum hydrocarbons in soil for a long time.

Disclosed is an indoor plant growing device for show. A control box 30 is disposed on a column base box of a column base 26. Trays 25 are disposed between a connector 27 and a column connecting bar 21. Growing pot trays 17 are disposed between a connecting bar connector 19 and the connecting bar 13. Growing pots 10 are disposed in trays 12. A top water pump 1 is disposed on a water injection box 3, and the water injection box 3 is connected with a connecting bar 9 through a top connector 5. A top cover 2 covers the water pump 1 and the water injection box 3. A heater 4 is disposed in the water injection box 3. The water injection box 3 is integrally connected with a water supply pipe 22 and water injection pipes 6. A water outlet of each water injection pipe 6 corresponds to one filtration-irrigation hopper 8. A control box 30 is disposed inside the box of the column base 26. The growing device in a stereoscopic structure is ornamental. By means of auxiliary devices for growing indoor vegetables or flowers, growth necessities for the plants can be provided. The indoor plant growing device can be used for growing vegetables and flowers all the year round.

The invention discloses an ecological energy-saving and environment-friendly sustainable plant growing system. The plant growing system is characterized by comprising a water storage and supply module (1), a permeable isolating unit (2), a nutrient soil layer (4) and a drip irrigation system (3), wherein a single or a plurality of water storage and supply modules (1) form a plant growing base, the plant growing base is arranged on a roof or a soilless foundation, and the water storage and supply module (1) consists of an upper module and a lower module which are connected by splicing; the permeable isolating unit (2) is placed on the plant growing base, namely the upper part of the water storage and supply module (1); the nutrient soil layer (4) is encircled on the upper part of the permeable isolating unit (2); and the drip irrigation system (3) is arranged in the nutrient soil layer (4). The plant growing system is simple in structure and convenient to manufacture, and does not needmanual irrigation and maintenance under normal conditions.

The invention discloses an integrated rainwater system for a sponge city and a construction method of the rainwater system. The rainwater system comprises a middle green belt and water storage tanks, wherein the middle green belt comprises a vegetation planting area and a rainwater infiltration area; a concrete course is arranged at the lower end of the rainwater infiltration area; a rainwater pipe is arranged at the lower end of the concrete course, and the rainwater pipe is connected to the water storage tanks; water pumping pipes are connected from the interiors of the water storage tanks; bidirectional nozzles are arranged at the other ends of the water pumping pipes; and water pumps are connected to the water pumping pipes. In accordance with the shortcomings of the prior art and the characteristics of the sponge city, the rainwater system, which integrates water seepage, water storage, water purification and utilization, is designed, and the construction method of the rainwater system is correspondingly designed; by promoting the water seepage with the adoption of vegetation, the problem of road water-logging is solved through slow discharge and controlled release; and in addition, some impurities in the rainwater are separated on the basis of the purification capacity of the vegetation, and the rainwater is stored in the water storage tanks and is used for spraying roads and watering the vegetation in dry season, so that adverse effect caused by drought and flood seasons can be effectively relieved.

An underground garbage classified collection system comprises an overground garbage collection device, underground garbage cans and lifting devices, wherein the overground garbage collection device comprises a collecting box, marking buttons which are arranged on the surface of the collecting box and inlet switches which are arranged at the bottom of the collecting box, and the overground garbage collection device is used for collecting overground garbage; the underground garbage cans are used for containing the overground garbage; and the lifting devices are used for raising the underground garbage cans to the ground, so that the garbage in the underground garbage cans can be cleaned away conveniently. According to the underground garbage classified collection system, an underground classified garbage collecting box system is used, and the classified garbage collecting cans are buried under the ground, so that the ground space is saved, and the environment is beautified. According to the underground garbage classified collection system, by the aid of the buttons indicating different kinds of garbage, people are forced objectively to select one button when discarding the garbage, so that a good influence is exerted on reinforcement of the garbage classification idea of the people, and the garbage classification effect can be greatly improved. Besides, according to the underground garbage classified collection system, only simple circuit designs and the lifting devices are used, so that the underground garbage classified collection system is low in cost, high in operability and easy to maintain and transform later.

The invention discloses a purifying device of backwash, aeration type hidden flow marshland water body and a method of purifying water body, wherein the whole purified pool display cube box; the separating pool separate the pool as downward pool and upper pool; the filling base material pack evenly in the pool; planting amphibious plant on the upper; setting cloth water pipe on the upper of the upper pool; making the upper of adjusting pool higher than purifying pool; setting inlet pipe and water-feed pump on the one side of the adjusting pool; setting admitting pipe and admitting pipe on the upper of the upper pool; setting aeration machine on one side of the purifying pool. The invention possesses high load factor, small plot area and good treatment effect, which can improve treatment effect.

The invention relates to phytoremediation for heavy metal polluted soil, in particular to a method for utilizing combined reinforced measures to remedy cadmium-polluted soil. The method is to apply an ammonium fertilizer in the soil to be remedied, plant maidenhair, add a chelating agent into the soil when the maidenhair is grown to the flowering period or the maturation period, and completely remove the plants after the plants are grown for 10 to 15 days so as to achieve the aim of remedying the cadmium-polluted soil. The method not only can obviously relieve the harm of the chelating agent on the plants but also can obviously improve the reinforced remedying effect of the chelating agent by applying the acid fertilizer so as to accelerate the phytoremediation process of the cadmium-polluted soil. Moreover, the method has the advantages of low remediation cost, high remediation efficiency, strong maneuverability, small environmental risk and the like, and can beautify the environment when simultaneously treating the polluted soil.

The invention discloses a biological response system for multistage sewage treatment as well as a manufacturing method and a sewage treatment method. The biological response system is formed by connecting a multistage precipitation pretreatment unit, a multistage hydrolysis and acidizing treatment unit, an aeration oxygenation treatment unit and a multistage undercurrent wetland treatment unit through pipelines; the multistage undercurrent wetland treatment unit comprises a water inlet wetland pool, two groups of decomposition and percolation wetland pools and a water outlet wetland pool which are sequentially arrayed; and the multistage precipitation pretreatment unit, the multistage hydrolysis and acidizing treatment unit and the aeration oxygenation treatment unit are sequentially arranged on one side of the multistage undercurrent wetland treatment unit in parallel and are connected with one another through pipelines. The biological response system provided by the invention has the advantages of scientific design, reasonable structure, fewer electromechanical devices due to the adoption of an automatic flow mode, low operation cost, low sewage treatment expense, small floor area, obvious sewage treatment effect, convenience for operation and maintenance management, low cost on project capital construction and operation, and capability of carrying out purification treatment all the year round, ; the treated sewage can be directly discharged into reservoirs, rivers and lakes and is in accordance with discharge standards in China; and a bioecological technology has stronger self-regulation capability and repair capability.

The present invention relates to the field of plant reproduction and seedling propagation technology, and is characterized by using special-made nutrient liquor and spraying it on the foliage of cuttage on the culture medium so as to promote the cutting quick grow. Said invention is low in cost, and high in reproduction efficiency.

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 relates to an LED artistic lighting device which comprises a plurality of LED lamp strings and a driving plate, wherein the driving plate is used for providing proper electrical power and executing functional control for each LED lamp string; each LED lamp string comprises a narrow and long printed circuit board strip welded with a plurality of LED luminous bodies; at least one end of the narrow and long printed circuit board strip of each LED lamp string is respectively fixed and electrically connected to the driving plate, thereby forming a plane or stereo lighting device; and after the lighting device electrified, beautiful and brilliant spot pictures and texts are emitted. The LED artistic lighting device combines modern scientific and technologic elements with traditional cultural artistic elements, is more stereo and beautiful, meets the requirements for green environmental protection illumination, beautiful appearance and light art, simultaneously realizes wireless control of LED, and displays different figures and texts and light effects. The invention also provides the LED lamp string for forming the LED artistic lighting device, and a method for constructing the LED artistic lighting device.

The invention relates to a support. A snap ring is made; the inner side of the snap ring is provided with a cushion layer; the outer side of the snap ring is provided with 3 to 4 movable and expandable pillars; the bottom of each pillar is provided with a fixed leg; the fixed leg is provided with a fixing hole. When a tree is supported, the snap ring is screwed up by a screw and blocked to the trunk of the tree; the cushion layer on the inner side contacts with the trunk of the tree so as not to damage the trunk; and then the pillars on the outer side of the snap ring are unfolded and adjusted to the appropriate angle and length, so that the fixed legs at the bottom of the pillars tightly contact with the ground; expanding bolts are used to fix the support on the ground through the fixing holes, so as to support the tree.

The invention provides a method for de-silting a lake and constructing a lake center island and belongs to a construction technology. The method comprises the following steps of: de-silting and dredging, transporting sludge, carrying out storage yard treatment, curing the sludge, discharging tail water and constructing the lake center island while de-silting. The method disclosed by the invention solves the problem that old problems of de-silted lake water happen again. The engineering cost is reduced, the work period is shortened and the secondary pollution is managed. The method has the characteristics of smaller occupied space, no transferring of pollutants, investment saving and good benefits. According to the method disclosed by the invention, the swampiness problem is solved, the water storage amount is increased, a land resource is increased, a wetland park is established and the pollution recycling is realized. The method is a practical and feasible good method for managing and beautifying the lake.

The invention discloses a bus shelter for reutilizing natural energy. The bus shelter comprises a vertical plate, a rain-proof shed, a temperature lowering and dedusting device and a solar cell panel. The vertical plate is fixed to the ground through a pair of stand columns; the rain-proof shed is mounted at the top of the vertical plate; the periphery of the rain-proof shed is provided with high-pressure atomizing nozzles; the temperature lowering and deducting device comprises a high-pressure water pump and a controller, and the high-pressure water pump is connected with the nozzles through water pipes; the controller is electrically connected with the high-pressure water pump, the high-pressure water pump is connected with a water tank located in a pit, and the water tank is connected with a rain sewage recycling and utilizing system; the solar cell panel is mounted on the top face of the rain-proof shed and electrically connected with an accumulator located in the pit, and the accumulator provides power to the high-pressure water pump and the controller. According to the bus shelter for reutilizing natural energy, natural energy is fully utilized, a place for protecting passengers against sun and rain is provided for passengers, and spraying, cooling and dedusting can be further conducted on the rain-proof shed.

The invention discloses a combined on-water plant planting device, and relates to the technical field of water surface plant planting devices. The combined on-water plant planting device comprises a planting frame body. The planting frame body is of a square structure formed by four hollow plastic pipes in a combined mode, the end portions of every two plastic pipes are connected through an elbow so that the planting frame body can be floated on the water surface without submerging, a bearing support is connected in the middle of the planting frame body, a planting basket is arranged on the bearing support and used for planting an aquatic plant, a supporting protective frame is connected to the bottom of the planting frame body and is of a rectangular structure, protective nets are arranged outside the supporting protective frame, and a containing cavity is formed inside the protective nets and used for growing of a root system of the plant. The combined on-water plant planting device is simple in structure, novel in design, low in cost, convenient to manufacture and long in service life, the size can be adjusted according to the growing requirements of the borne plant, and the combined on-water plant planting device can be suitable for planting various aquatic flowers and plants; the water quality can be improved, the environment can be further beautified, and the living quality of people can be improved.

The invention discloses a multi-medium biological-ecological cooperative treatment system and a multi-medium biological-ecological cooperative treatment method for sewage in highway affiliated facilities. The system comprises a multi-medium fixed biological bed and a multi-medium tidal flow ecological wetland. The treatment method of the system comprises the following steps: lifting sewage to enter the multi-medium fixed biological bed by virtue of a lift pump, under a micro-power ventilation condition, effectively degrading an organic substance and ammonia nitrogen by virtue of the multi-medium fixed biological bed, enabling the effluent from the multi-medium fixed biological bed to enter the tidal flow artificial wetland to further remove total nitrogen and total phosphorus. The method disclosed by the invention has the advantages that the multi-medium fixed biological bed and the tidal flow artificial wetland are organically combined and respective functional advantages are played to achieve the purposes that the organic substance, ammonia nitrogen, total nitrogen and total phosphorus in the sewage are efficiently removed simultaneously. The system has the advantages of low investment, low running cost, low maintenance and unattended operation, basically no residual sludge is produced and the deep nitrogen and phosphorus removal and recycling of sewage in highway ancillary facilities can be achieved.

The invention relates to phytoremediation technology for treating polluted environment, in particular to a method for repairing and treating the earth polluted by cadmium by using a flower plant, namely maidenhair. The method utilizes root systems of the cadmium ultra-enriched flower maidenhair to absorb the enriched cadmium in the polluted earth in large amount, transfers the cadmium upward to the overground part; when plants grow to the height of between 30 and 40 centimeters or the blossom time, the plants are integrally removed and sold as commercial ornamental flowers or properly treated so as to absorb and remove a large amount of the cadmium from the earth; and by repeatedly planting the flower plant and repeating the process, excessive cadmium in the polluted earth can be continuously extracted until the content of the cadmium achieves the environment safety standards. The method has the advantages of small engineering quantity, no destruction to physicochemical property of the earth, no secondary pollution, beatifying environment while treating the polluted earth, and the like.

The invention relates to an arrangement method of an ecological gabion chamber revetment type, and belongs to a revetment structure type in river training works. A stepped sandstone cushion layer is laid on the revetment of a river; a sinuous ecological gabion chamber is arranged on the stepped sandstone cushion layer; and plants are planted in the sinuous ecological gabion chamber. The arrangement method has the advantages of novel structure, reliable operation, wide application range, capabilities of improving the engineering safety and favorably improving water eco-environments of rivers and lakes and great application prospect.

The invention provides an assembly method of a two-stage compression heat pump air-conditioning and refrigerator system and a device used the method. The method is characterized in that a split-type air-conditioning outdoor system and a split-type refrigerator outdoor system are assembled together; the compressors of two different pressure levels of the same unit are used; the adjustment of the air and the refrigeration of the refrigeration are realized through the serial and parallel arrangement of the cooling pipeline, the control of the control valves, and the auxiliary function of the intermediate heat exchanger cold / heat exchange system; as the air-conditioning refrigerant cycling circuit and the refrigerator refrigerant cycling circuit arranged in parallel supply heat energy to the rooms and supply cold energy to the refrigerator when operating in opposite directions; the air-conditioning refrigerant cycling circuit and the refrigerator refrigerant cycling circuit supply cold energy to both the room and the refrigerator when arranged both in series and in parallel and operating in collaboration. The invention realizes the transfer between different work modes of the system through changing the cycling direction of the refrigerant of the system and the allocation of flow of the refrigerant. The different types of energy utilize each other, and the energy-saving and noise-reducing effects are obvious. The indoor machine can be arranged in an embedded type, which saves space and is beneficial for the beautification of the environment. The device is widely applicable to locations such as households, villas, hotels and motels, etc.