31results about How to "Increase water depth" patented technology

The invention relates to a device for securing floating bodies (1), in particular platforms and boats, comprising at least one floating dock (2) with at least one buoyancy element (3), a path structure (4), and a framework-like underwater structure (5). In order to provide advantageous disembarkation conditions, the path structure (4) and the framework-like underwater structure (5) of the floating dock (2) are connected to each other via pendulum supports (6) and are braced via pulling means (7), in particular cables and / or claims.

The invention provides a low-energy coastal beach restoration design method, including constructing the outer edge line of the beach shoulder, determining the aspect ratio of the outer edge line of the beach shoulder, determining the slope of the beach surface and performing sand replenishment, dredging area and dredging depth The determination and the steps of building the sand barrier. The present invention utilizes the characteristics of wave convergence at the headland, constructs a protruding headland-shaped beach shoulder outer edge line by artificial means, and determines the required beach surface range and slope according to the convex beach shoulder outer edge line and proceeds Replenishing sand; dredging around the beach during beach restoration, while reducing mud sources and increasing near-shore water depth, a convex near-shore terrain is constructed, which effectively increases the wave energy at the repaired location and improves the Situation of beach silt on low energy coast.

The invention discloses an upward flow circular oil separation pretreatment device which mainly comprises a water inlet and distribution system, a bottom mud scraping mechanism, a surface oil and slag scraping mechanism and a water outlet area. A water distribution barrel 2 is employed for center water inlet; a diversion cone 3 uniformly distributes water around; and floating oil and dispersion oil in water are collected by using a density difference between the oil and the water. A surface oil skimmer 12 is matched with a floating slag hopper 13, so that the concentration of the collected floating oil can reach 20%. A mud scraper 6 is arranged at the bottom to concentrate precipitated oil sludge, the concentration of the concentrated sludge can reach 80-100g / L, and sludge thickening is not required. A designed upflow rate of the oil separation pretreatment device can reach 4m / h, and the floor area is saved. The device is widely applicable to a pretreatment stage of oily sewage and can achieve oil and suspended matter effluent of less than 100mg / L synchronously.

The invention relates to a zanjon air lifting pushing solid circulation integrated construction oxidation ditch, which comprises an anoxic zone, an anaerobic zone, an aerobic zone provided with a millipore aerator group and an integrated construction oxidation ditch of a solid and liquid separating zone, wherein, the anoxic zone is arranged at the front end of a main ditch. The integrated construction oxidation ditch is characterized in that a horizontal partition board which divides the main ditch into an upper groove layer and a lower groove layer as well as is left with channels at the front and the back is arranged at the middle-lower part of the ditch body between the ditch walls at the tail ends of the anoxic zone and the main ditch, the aerobic zone is arranged at the upper groove layer and the tail end of the main ditch and is provided with n (n is more than or equal to 1) aeration lifting zone (s) which is (are) composed of an inlet water-retaining wall, an outlet water-retaining wall and the millipore aerator group and is (are) provided with a lower water inlet and an upper water outlet. The aerobic zone is internally provided with n aerobic reaction zone (s), and the solid and the liquid separating zone is arranged between the anaerobic zone and the nth aerobic reaction zone. The lower groove layer is the anoxic zone. The integrated construction oxidation ditch has the advantages that: better anoxic, anaerobic, aerobic, and solid and liquid separating environments are created, the total dephosphorization and the total denitrification effects are improved, the yielding water quality is better, the occupation area is reduced, and the construction and the operation costs are lowered.

The invention provides a construction method and application of a large-scale reservoir sounding reference field. The location of the reference field: in order to meet the calibration technical requirements of various sounding equipment, it is necessary to lay out various forms of reference points and reference surfaces; reference point construction; reference surface construction. Based on the sounding reference point, it is possible to conduct research on sounding error, positioning error, and water level correction error, including the nominal accuracy of the sounding instrument, sounding method, actual depth of sounding, and the influence of dynamic draft; positioning accuracy, GNSS data update rate, and differential method Influence, etc.; water level reckoning model, etc. Based on the sounding datum, it is possible to conduct research on the sounding environment error and GNSS three-dimensional channel sounding accuracy, including wave effects, positioning center deviation effects, single-beam sounding attitude effects, sounding delay effects, ship speed effects, beam angle effects, Coupling effect, water body characteristics, bathymetry sampling frequency and smoothing method, sound ray tracking, and multi-beam bathymetry system bathymetry point cloud precision analysis and other impact studies.

The present invention belongs to the sewage treating apparatus adopting biochemical technology. The integrated stereo oxidation channel has two rectangular solid-liquid depositing separators, and the oxidation channel is separated with partition board into the upper aerobic area and the lower anaerobic area. Each of the solid-liquid depositing separators has inclined mixed liquid inlet in the bottom, overflow weir and water outlet on one side wall, and sludge reflowing port on the other wall. The two solid-liquid depositing separators are installed separately on two side walls of the stereo circulating oxidation channel. The stereo circulating oxidation channel has bottom isolated from air and this is favorable to forming anaerobic state and raising denitrifying efficiency. Compared with available oxidation channel, the present invention has 50 % reduced covered area.

The present invention relates to the technical field of aquatic product cultivation, in particular to a prawn recirculating aquaculture system in an algae-bacteria water system, comprising: a culture pond, a facility with adjustable light intensity is arranged above the culture pond and covers the roof above the culture pond, and the pond of the culture pond The bottom gradually inclines from the surroundings to the center and there is a drainage port in the center of the bottom of the pool. The breeding area of ​​the breeding pond is 400-1000m2, and the breeding pond is a round or chamfered square; the water treatment device consists of a water outlet well, a filter tank, It is composed of a return well, a circulating water pump and a foam air flotation tower. The outlet is connected to the water outlet well through a pipeline, and the water outlet well is connected to the filter tank, the return water well and the circulating water pump in turn. The air flotation tower is connected with the tangential water distribution pipes arranged around the culture pond through pipelines. The invention has the characteristics of low cost, low energy consumption, self-purification, high output and the like, and can be widely used in intensive aquaculture industry.