34results 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.

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.

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.

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.

The invention relates to a reactor for growing algae in an aqueous liquid using photosynthesis. The reactor includes a tank for accommodating the aqueous liquid with the algae in it, and a lighting system including a light source with a plurality of LEDs, a mounting structure for supporting the LEDs, and a housing for accommodating the light source and the mounting structure. At least a portion of the housing is transparent for light emitted by the light source. The lighting system is at least partially submerged in the aqueous liquid. Additionally, in operation, the light transmitted through the transparent portion of the housing is of sufficient intensity to substantially prevent growth of the algae on the surface of the transparent portion of the housing.

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.

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.