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

The invention relates to the technical field of aquatic product aquaculture, in particular to a phycomycete water prawn circulating aquaculture system. The system comprises an aquaculture pond and a water treatment device, wherein a roof which is provided with an illumination intensity adjustable facility and covers the upside of the aquaculture pond is arranged above the aquaculture pond; the pool bottom of the aquaculture pond is gradually inclined from the periphery to the middle; a drainage port is formed in the middle of the pool bottom; an aquaculture area of the aquaculture pond is 400-1,000m<2>; the aquaculture pond is a circle or a chamfered square; the water treatment device consists of a water outlet well, a filter groove, a water return well, a circulating water pump and foam air floatation towers sequentially; the drainage port is connected with the water outlet well by a pipeline; the water outlet well is sequentially connected with the filter groove, the water return wall and the circulating water pump; the circulating water pump is connected with the foam air floatation towers by pipelines; and the foam air floatation towers are connected with tangent water distribution pipes arranged at the periphery of the aquaculture pond by pipelines. The system has the characteristics of low cost, low energy consumption, automatic purification, high yield and the like, and can be widely applied to the industry of intensive aquaculture.

The present invention relates to a sewage treatment process by adopting improved alternative type active sludge method. Said sewage treatment process utilizes the equipments of treatment tank, anaerobic chamber, anoxybiontic chamber, aeration tank and flocculation precipitation tank, etc. and alternatively adopts the process steps of stirring, aeration, concentration, sludge reflus, mixing, flocculation, precipitation and biological dephosphorization, etc. so as to attain the goal of purifying sewage.

The invention relates to a zanjon air lifting pushing solid circulation inversion A<2>O integrated construction oxidation ditch, which comprises an anoxic zone, an anaerobic zone, an aerobic zone provided with a millipore aerator group and an inversion A<2>O integrated construction oxidation ditch of a solid and liquid separating zone. The solid and liquid separating zone is arranged at the front end of a main ditch, the anaerobic zone is arranged at the tail end of the main ditch, and water inlets are respectively arranged at the front ends of the aerobic zone and the anaerobic zone. 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 is arranged at the middle-lower part of the main ditch, the aerobic zone and the anaerobic zone are respectively arranged at the upper groove layer and the lower groove layer, the aerobic zone is internally 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 horizontal partition board of a first grade aeration lifting zone is provided with a plurality of lifting holes, and the aerobic zone is internally divided into n aerobic reaction zone (s) corresponding to the aeration lifting zone (s).The integrated construction oxidation ditch has the advantages that: the yielding water quality, particularly the dephosphorization and denitrification effect, is better, the occupation area is reduced, the equipment is reduced, the operation is simplified, and the operation cost is lowered.

The invention relates to a riser pipe installation that comprises a flexible duct of the non-bound type, the duct being vertically arranged between a mechanical connection with a submerged buoy at the stub on the one hand, and a mechanical connection with the seabed at the bottom on the other hand, wherein fluid connections are provided at the stub and at the bottom for connecting the riser pipe with surface equipment on the one hand and bottom equipment on the other hand; the bottom of the pipe is located at a depth of at least 1000 m where it is submitted to a computable maximum reverse bottom effect F, while the buoy is oversized in order to generate at the bottom of the riser pipe a reaction tension T higher than at least 50% or even 100% of the computable maximum reverse bottom effect F applied at the bottom of the pipe.

The invention discloses a jacket offshore wind turbine foundation with brackets. The jacket offshore wind turbine foundation with the brackets comprises a jacket, foundation piles, bracket flanges and the construction brackets, wherein the foundation piles are arranged in guide pipes of the jacket and extend to be embedded into a foundation; the bracket flanges are arranged on the guide pipes; and the construction brackets are connected with the guide pipes through the bracket flanges. According to the jacket offshore wind turbine foundation with the brackets, a temporary supporting system is formed through auxiliary piles constructed in advance, the jacket is placed on the supporting system in a suspended mode through the construction brackets, then the guide pipes of the jacket serve as a positioning guiding device so that the foundation piles can be piled, and finally grouting connection is conducted on the foundation piles and the guide pipes. By the adoption of the jacket offshore wind turbine foundation with the brackets, structure fixing and stabilizing of the suspended jacket during the construction period are achieved; positioning, guiding, pile clamping and the like of offshore construction of the foundation piles are achieved; and in addition, the height of the jacket can be reduced, and steel materials are saved. The structure is easy and convenient to construct, good in feasibility and suitable for areas with large water depths and thick covering layers and has broad application prospects in offshore wind power projects. The invention further discloses a construction method of the jacket offshore wind turbine foundation with the brackets.

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 invention provides a low-energy coastal beach restoration design method. The method comprises the steps of constructing an outwards- protruding beach berm outer edge line, determining the transverse-to-longitudinal ratio of the beach berm outer edge line, determining the beach surface gradient, supplementing sand, determining a dredging area and dredging depth, and building a sand blocking dam. According to the method, the characteristic that waves gather on the headland in an auxiliary manner is utilized, the outwards-protruding headland-shaped beach berm outer edge line is constructed through a manual means, the needed beach face range and gradient are determined according to the outwards-protruding beach berm outer edge line, and sand supplementing is performed; when the beach is repaired, desilting is performed on the periphery of the beach face, the outwards-protruding near-shore terrain is constructed while a muddy material source is reduced and the near-shore water depth isincreased, the wave energy of the repaired position is effectively improved, and the situation of beach argillization of the low-energy coast is improved.

The invention belongs to the field of water environment protection, and particularly provides an ammonia-adsorption-based improved SBR biological nitrogen and phosphorus removal system and method for low-carbon-source sewage. The method is an improvement to a traditional SBR technology, and comprises the steps of (1) adding a powdery adsorbent in the system to promote ammonia adsorption of sludge and the adsorbent and to promote settling of the sludge at the same time; (2) additionally adding an anaerobic tank; and (3) changing a specific operating procedure of an original SBR. Sewage enters an SBR reaction tank after running through the anaerobic tank, and a circulating procedure of the SBR reaction tank comprises (1) water ingress, (2) oxygen deprivation, (3) sedimentation and water discharging, and (4) aeration. The most important difference between an SBR operating procedure part of the method and the traditional SBR is as follows: firstly, the front-end anaerobic tank is added, secondly, sedimentation and water discharging are conducted immediately after the oxygen deprivation procedure is carried out, and aeration is conducted on the sludge which is obtained after sedimentation and water discharging are conducted. The method is suitable for municipal sewage with a low carbon-nitrogen ratio, moreover, the nitrogen and phosphorus removal efficiency is high, the technology is simple, and energy consumption is low.

The invention relates to a biochemical treatment and sedimentation integrated backflow type active sludge biochemical treatment device, which comprises a cylindrical shell and a high-efficiency aerator, wherein a backflow cylinder with open upper and lower ends is arranged in the shell, an interspace for forming a sedimentation overflow area is reserved between the upper end of the backflow cylinder and the top of the shell, an interspace for forming a sludge area is reserved between the lower end of the backflow cylinder and the bottom of the shell, an interspace for forming a rotational flow passage is reserved between the outer wall of the backflow cylinder and the inner wall of the shell, a jet pipe of the high-efficiency aerator is connected into the shell along the tangential direction of the shell and is communicated with the space inside the shell, and the joint part corresponds to the lower part of the backflow cylinder. The biochemical treatment and sedimentation integrated backflow type active sludge biochemical treatment device forms backflows in the shell, effectively improves the mixed mass transferring capacity, has high active sludge concentration and good purification effect, allows deeper water depth, and is mainly applied to the aerobic biochemical treatment of organic sewage.

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 large reservoir sounding reference field construction method and application. The method comprises the steps of reference field site selection: in order to meet the calibration technical requirements of various sounding devices, arranging reference points and reference surfaces in various forms, constructing a reference point, and constructing a reference plane. Research on sounding errors, positioning errors and water level correction errors can be carried out on the basis of the sounding reference point, including the nominal precision of a depth finder, the sounding mode, the actual sounding depth and the dynamic draft influence, positioning precision, GNSS data updating rate, difference method influence and the like, a water level calculation model and the like. Based on the depth sounding reference surface, depth sounding environment error research and GNSS three-dimensional water channel depth sounding precision research can be carried out. The influence research includesa wave effect, a positioning center deviation effect, a single-beam sounding attitude effect, a sounding delay effect, a ship speed effect, a beam angle effect, a coupling effect, water body characteristics, sounding sampling frequency and smoothing mode, sound ray tracking and multi-beam sounding system sounding point cloud precision analysis.

A ship lift navigable ship draft standard improving method actively utilizes a ship lift docking locking mechanism to bear large unbalanced load, when a ship chamber is docked, the threshold water depth of a ship lift lock head working door is increased, meanwhile, the docking elevation of the ship chamber is reduced to make the ship chamber water level lower than an approach channel water level,and the ship chamber is filled with water through a ship chamber water depth adjusting device to make the water level flush with the approach channel water level, so after docking, the water depth ofthe ship chamber is increased, conditions are provided for improving the draft standard of the ship, and load change caused by increase of the water depth of the ship chamber is borne by the docking locking mechanism; when docking of the ship chamber is relieved, the ship chamber is drained through the ship chamber water depth adjusting device, and the water depth of the ship chamber is reduced toa designed water depth, so it is guaranteed that the lifting load of the ship lift is not changed, and normal lifting operation is not affected. The method is ingenious and easy to implement, and theship draft standard improving effect is remarkable.

The invention provides a reverse slope type apron. The apron comprises a stilling pool apron section, a sea overtopping section and a big stone backfilling section; the sea overtopping section is arranged in a reverse slope type sea overtopping section manner; the scouring damage of water flowing out of a pond to the sea overtopping section is reduced; the flowing speed of water flowing out of thepond is reduced; a water surface line is smoothly connected with a downstream river channel; the vertical component speed of water flow flowing out of the pond is reduced; the water depth at the outlet of the stilling pool is increased, the overall stability of the stilling pool is improved, the depth of a water cushion in the stilling pool is increased, the energy dissipation rate is increased,the water surface line becomes gentle, water flow can better return to a groove, the stilling pool and the overall anti-scoring performance of the sea waves are improved, and the flow state of downstream water flow is greatly improved.

The invention discloses a tower type aerobic reactor which comprises a body and an aeration header pipe, and a water inlet pipe, a return sludge pipe and an effluent weir are arranged at the top of the body; the water inlet pipe and the return sludge pipe extend to the bottom of the body; a water outlet pipe is arranged on the effluent weir; a nitrification liquid inlet pipe and a sludge outlet pipe are arranged at the bottom of the body; a nitrification liquid outlet pipe is arranged between the nitrification liquid inlet pipe and the water inlet pipe, and the nitrification liquid outlet pipeand the nitrification liquid inlet pipe are respectively connected with a nitrification liquid internal circulation pump; a sludge inlet pipe is arranged between the sludge outlet pipe and the returnsludge pipe, and the sludge inlet pipe and the sludge outlet pipe are respectively connected with a sludge internal circulation pump; an aeration branch pipe is arranged on the aeration header pipe,and a liftable aerator is arranged at the end part of the aeration branch pipe; and the aeration branch pipes extend into the body from the top of the body. By the arrangement, high water depth, highoxygen utilization rate, high treatment capacity, sufficient contact reaction and low energy consumption can be realized.