33results about How to "Inhibit algae growth" patented technology

Low-pressure drip irrigation system, comprising a distribution pipe made of thin-walled sleeve collapsible when empty and designed to operate under hydraulic head up to 3 m H₂O, having a plurality of holes in the walls thereof, a plurality of branch tubes equipped with low-pressure drip emitters; and a plurality of connectors connecting the branch tubes to the holes of the distribution pipe.

The sleeve material is opaque and reflecting the solar radiation so that the natural growth of microorganisms and algae in the irrigation water is suppressed, and the pipe is not heated more than 35° C. above the ambient air temperature.

The irrigation system is assembled in the field from components of a kit by deploying the distribution pipe, filling it with water, cutting the holes by means of a special band-held tool, inserting the connectors into the holes, and assembling the branch tubes with the connectors.

A marginals aquarium planting system includes a hanging planter and at least one disc-like trellis raft floating in front of the hanging planter. The trellis raft is comprised of sections of closed-cell foam that form an asymmetrical latticework. The system can also include supplementary floats.

This invention discloses a method for producing rise-fall artificial plant floating bed for wastewater biological treatment. The main body of the floating bed is hollow and sealed, and a planting groove is set on the main body. Filler and plants are placed in the planting groove. A support is set in the planting groove, which is connected with water body. Bed connectors are placed surrounding the main body of the floating bed. At least two main bodies are combined to form the floating bed, which is placed on the water surface. The roots of the plants on the floating bed can realize filtration, absorption and adsorption of pollutive substances in wastewater. The floating bed is sinked into the non-frozen layer below water surface in winter, and taken out of water surface inspring. The plants are left for further filtration, absorption and adsorption of pollutive substances in wastewater. This invention has such advantages as short project period, and rapid acting. Plants of the floating bed have a survival period of more than 8 months/year. The planting can match city landscape, thus are good for city afforestation, and can reduce secondary assembly cost. The floating bed just needs replanting in spring.

The invention discloses a method for processing aquaculture wastewater containing antibiotics by utilizing a plant floating bed, belonging to the field of wastewater pollution treatment. The method comprises the following steps: 1) plant pre-culture: cleaning Italian rye grass, utilizing pre-configured aquaculture wastewater to acclimate and culture for 7-10 days in a laboratory, thus enabling the Italian rye grass to adapt to wastewater; and 2) wastewater treatment: adding prepared aquaculture wastewater containing antibiotics into a cuboid container slot, transplanting the Italian rye grass after acclimation and culturing to a floating bed carrier, placing the floating bed on the surface of aquaculture wastewater, and staying for 20-35 days. The invention not only can take away a great amount of nitrogen and phosphorus nutrients from aquaculture wastewater, thus inhibiting algae growth, improving water quality, and simultaneously realizing the purpose of directly discharging or recycling aquaculture wastewater. The harvested rye grass also can be used as livestock and poultry feed or used for centralized recycling treatment, and recovery of usable nutrient elements in plant body.

An improved chlorination system for pools, spas, potable water supplies, and the like, provides a vertically oriented electrolytic cell connected between a pump and a lightly salinated pool. The cell preferably contains a metallic electrode, such as titanium, and a precious metal coated titanium electrode, and has means for passing an electric current through the cell. The present invention further provides a novel electrode stack design, conducive for forming an efficient chlorinator comprising a plurality of interconnecting electrode stacks of separate electrical cells.

A clarifier in a wastewater treatment plant is provided with a submerged launder for effluent, the launder preferably having an integral density current baffle and scum baffle. In one embodiment an existing launder is modified, with its vertical leg replaced with a sloped plate defining launder conduit triangular in cross section, and with a sloping portion of the plate forming a density current baffle. Openings in the sloped plate permit entry of effluent liquid, and the liquid level in a clarifier is controlled without an overflow weir plate. In another form submerged pipe with entry holes serves as the launder, with support brackets integral with a density current baffle. A third form of the launder is a box formed beneath the shelf of an existing internal launder in the clarifier, again with a density current baffle extending down from the box. In another version an existing launder is covered and sealed, and holes are drilled through the launder wall to admit effluent. A submerged launder avoids problems of algae buildup and the need for algae sweeps or frequent cleaning of the launder.

The process for suppressing the growth of green algae in aqueous systems, such as lakes or rivers, comprises introducing carbon dioxide, preferably industrially produced carbon dioxide, into the water to be treated, thereby acidifying the water and suppressing the growth of green algae and promoting the growth of diatoms. The carbon dioxide can be produced by industry. Thus disposal of such industrially produced gases for acidification of waters serves for cleaning water and leads at the same time to clean air.

The present invention relates to a use of a copper-carbon composite nanomaterial in algae control. The copper-carbon composite, nanomaterial is applied in inhibition of algae growth. The copper-carbon composite nanomaterial achieves control of algal blooms by inhibiting algae growth, and does not generate secondary pollution during processing. By employing the copper-carbon composite nanomaterial to perform algae control, the present invention eliminates the pollution resulting from algal blooms, and improves the water environment.

To inhibit the growth of algae, glucosamine and chitosan are added into water needed to be treated wherein the concentration of glucosamine and chitosan in the treated water is in a ratio from 1:9 to 9:1.

A preparation method for garbage enzyme comprises the following steps: putting fruits and/or vegetable, as well as water and saccharides into a closed container according to a ratio, fermenting for 3 to 6 moths, filtering, and taking clear liquid after the filtering, thus obtaining the garbage enzyme, wherein the garbage enzyme is formed by mixing and fermenting according to the volume ratio that the fruits and/or the vegetables : the water : the saccharides is equal to 1: (2 to 4) : (8 to 12). A preparation method for an algal bloom inhibitor comprises the following step: adding water to dilute the garbage enzyme prepared by the preparation method for the garbage enzyme, thus obtaining the algal bloom inhibitor. The algal bloom inhibitor has a remarkable effect of inhibiting alga growth, contributes to aquatic ecological environment purification and water body self-recovery, and has a perfect improving effect on water quality; the preparation methods for the garbage enzyme and the algal bloom inhibitor are simple, low in cost, easy for industrialized operation, and capable of avoiding secondary pollution.

The present invention relates to treatment of water, and more specifically to treatment of water using a stable formulation of polyhexamethylene biguanide (PHMB) and a liquid or solid zinc salt for the application and prevention algae in recirculated and stagnant water systems. The invention also encompasses methods of treating water that already contains PHMB.

A device for watering vegetation, such as a tree, has a flexible tube that can be laid flat and rolled up. The flexible tube has a watertight seal about 2 inches to about 6 inches from each end, which leaves a flap at each end. The flexible tube is placed in a circular configuration around the tree, and its flaps are joined together with hook and loop fasteners. There are one or two openings along the length of the tube through which water can be admitted into the flexible tube. At or near the bottom of the flexible tube is at least one pre-filtered drip emitter from which water can leave the flexible tube at a controlled flow rate.

A system and device used to promote healthy growth and reduce damage to hydroponically grown flower bulbs during their transportation, storage and display. A transparent container is adapted and arranged with a support device and a snap-fit cover which act to reduce movement of fluids within the container in transit, thereby reducing spillage and minimizing damage to the flower bulbs. The support device contains a plurality of recessed inserts to secure flowers in an upright position and accommodate bulb growth without causing damage to the bulb. The snap-fit cover creates a reservoir chamber which prevents fluid from spilling out of the container if the container is tipped or subjected to unpredictable forces or motion during transportation. The hydroponic container is ready to be displayed and marketed as soon as it is shipped from the distributor, thereby minimizing retailer and consumer involvement and expenditure of time.

Safety is one of the most desired attributes of an algae control agent for ornamental water features, since the water is often consumed by wildlife and pets, and children sometimes come in contact with the water. The present invention safely prevents the growth of algae in ornamental water features, and does not add chemicals to the water, but controls algae by using insoluble adsorbents to remove essential micronutrients necessary for algal growth. The invention can be used in still or recirculating water features of all types, including bird baths, water fountains, artificial streams, ornamental waterfalls, and small ponds. Since no compounds are being released into the water, the algae control is very long-lasting, and is also maintenance-free, with no action necessary on the part of the user even when evaporation or removal of debris requires refilling the feature.

A swimming pool funnel includes a hollow funnel body extending along a central funnel axis from a first open end to a second open end, where the first open funnel end is greater in perimeter size than the second open funnel end and the funnel body reduces in cross-sectional size between the first open funnel end and the second open funnel end. An elongated spout made of rigid material is connected at its proximal end to the second open funnel end of the funnel body and extends along a central spout axis to a distal spout end defining an opening. The central funnel axis and the central spout axis define a body angle from 100 to about 150 degrees.

A pool cover for an aboveground swimming pool, the cover formed with an integrated inflatable and deflatable pocket centrally positioned on the cover. The cover is made of waterproof and durable vinyl PVC knife-coated material.

The invention discloses multi-frequency supersonic wave algae removing equipment comprising a multi-frequency supersonic wave signal generator and a supersonic wave emitting probe. The multi-frequency supersonic wave signal generator comprises: a power source used for supplying power; a frequency conversion signal source used for periodically and alternatively exciting high-frequency electrical signal circuits such that high-frequency exciting electrical signals are generated for exciting the supersonic wave probe to emit supersonic wave signals, wherein at least two different high-frequency electrical signal circuits are contained in the frequency conversion signal source; a power amplifier used for amplifying the powers of the high-frequency exciting electrical signals and outputting the high-frequency exciting electrical signals to a high-frequency output transformer; and the high-frequency output transformer used for formalizing the high-frequency exciting electrical signals and outputting the signals to the supersonic wave emitting probe. The equipment provides a multi-frequency working mode. Within a same time span, supersonic wave signals with different frequencies can be generated alternatively for removing algae, such that vacuoles in algae can be easily and rapidly compressed, collapsed, and destroyed, such that good algae removing effect is achieved.

The present invention discloses a plasma denitrification device, which comprises a plasma generating device and a denitrification reservoir. The plasma generating device comprises a plasma generator and a pulsed power supply. The plasma generator comprises at least one set of an electrode to generate plasma. An inlet of the plasma generator is configured to allow sewage passage. The denitrification reservoir comprises a shell and a denitrification zone, a water purification zone, and a sludge collecting zone provided inside the shell. The present invention effectively reduces total nitrogen and ammonia nitrogen in the polluted water body and helps to reduce COD, BOD, total phosphorus and chroma of the water body. The dissolved oxygen level of the water body is also increased after the purification process.

An eductor includes an adjustable air inductor assembly connected to a source of outside air or other fluid. As liquid flows through a constricted orifice of the eductor, the venturi effect creates a vacuum or low pressure zone that draws inducting fluid through the inductor assembly and infuses such fluid into the liquid driven or transmitted through the eductor. The fluid inducted liquid is then discharged by the eductor into a body or contained volume of water. Improved aeration and fluid flow control, as well as reduced algae growth are achieved without extraneous mechanical equipment. Increased turbulent liquid flow is produced, for example, to more effectively clean dirt and debris from water recirculating swimming pools, fish tanks and similar environments.

The invention discloses a filter structure, which comprises a barrel body, wherein the barrel body is provided with a barrel cover; the inside of the barrel body is provided with a filter element pipe; the bottom end of the filter element pipe is provided with a pipe plug; the filter element pipe is sleeved with a compressible filter element; the filter element pipe is provided with an outlet hole corresponding to the position of the filter element; the filter element pipe at two ends of the filter element is sleeved with a pull plate; the pull plates of the filter element pipe are provided with pull rods; one end of the pull rod is fixedly connected with the pull plate at the bottom of the filter element pipe; the other end of the pull rod penetrates the pull plate on the upper part of the filter element pipe and extends outside the barrel cover; the barrel cover is provided with a sewage inlet pipe, a filter water outlet pipe and a sewage cleaning outlet pipe, wherein the sewage inlet pipe is communicated with a liquid inlet space; the barrel cover is provided with an adjusting and change-over valve; the filter water outlet pipe and the sewage cleaning outlet pipe can be communicated with the filter element pipe through the adjusting and change-over valve; and a sterilizing lamp is arranged in the filter water outlet pipe. The filter structure has cleaning function without opening the cover, which makes the cleaning and maintenance of equipment more simple and convenient; and the structure has the functions of sterilizing pathogenic bacteria in water and inhibiting growing of algae.