46results about How to "Eliminate settlement" patented technology

The invention relates to the technical field of treating sewage by utilizing a biological technology and discloses an energy-saving type treatment device for MBR (membrane biological reactor) oxidation ditch sewage. The energy-saving type treatment device comprises an oxidization ditch biochemical reaction region and a membrane region, wherein a straight gallery of the membrane region and an S-shaped gallery of the oxidization ditch biological reaction region are in butt joint from the beginning to the end to form a circulating gallery; a penetrating tracery wall flat plate is overhead arranged on the bottom of the membrane region and used for dividing the membrane region into a membrane tank and a water distribution region from top to bottom; water distribution holes are uniformly distributed in the penetrating tracery wall flat plate; a membrane region water inlet is formed in the front end of the water distribution region; a membrane assembly and a water outlet tube are arranged in the membrane tank; the oxidization ditch biological reaction region is equipped with a water inlet device, a residual sludge outlet, a pushing device and an aeration device. According to the energy-saving type treatment device disclosed by the invention, the oxidization ditch process is organically combined with the membrane biological reactor; by utilizing hydraulic operation characteristics of large-flow circulating plug-flow state of the oxidization ditch process, mixed liquor in a groove is circulated and quickly flows through an MBR membrane set to realize solid-liquid separation, and therefore, the energy-saving type treatment device has the advantages of simple and compact structure, low operation energy consumption, small floor area, less investment, high pollutant removing efficiency and the like.

The invention discloses a low-energy-consumption lifting mixing barrel. A mixing shaft is inserted into a barrel body, a motor and a reducer drive the mixing shaft to rotate, the mixing shaft is sequentially provided with a lower suspension spraying mixer and a bottom sweeping mixer from top to bottom, wherein the lower suspension spraying mixer is limited by an upper positioning step and a lower positioning step and can float up and down; the lower suspension spraying mixer comprises a mixing shaft, a shaft sleeve and a paddle, wherein the mixing shaft is a spline shaft, the shaft sleeve is also a spline shaft sleeve, the spline shaft sleeve can move on the spline shaft, and the paddle is welded on the spline shaft sleeve; the bottom sweeping mixer comprises a mixing shaft and an outer barrel, the mixing shaft and the outer barrel are welded into a whole by virtue of a paddle, the mixing shaft extends downward and forms a hollow cylinder, then the hollow cylinder extends to form a cone, and the outer wall of the cylinder is communicated with a jet pipe; and a blade tilt is gradually increased from top to bottom. The low-energy-consumption lifting mixing barrel has the characteristics that energy consumption is low, material circulation is good, deposition at the bottom is hardly caused, no mixing dead angle is formed, and light-load staring can be still realized even materials are sedimented due to long-time power failure, so that the low-energy-consumption lifting mixing barrel has a broad application prospect.

The invention discloses a method for consolidating hydraulically-filled soft clay in the hydraulic filling process by using a vacuum preloading method. In the method, a drainage board with the length of 4-5m is artificially inserted in the original soft clay or hydraulically-filled soft clay, wherein the upper end of the drainage board is connected with a drain system which is connected with a water permeable pipe; soft clay is hydraulically filled, during which, the mode of hydraulically filling in blocks is adopted and a drain system is paved on the hydraulically-filled soft clay meeting the thickness requirement and is connected with the water permeable pipe; the drain system comprises a horizontal drainage board connected with the upper end of the drain board and a main drainage boardconnected with the horizontal drainage board; and the main drainage board is connected with the water permeable board. By using the invention, the thicker hydraulically-filled soft clay can be treated by vacuum preloading; by using loading upper-layer soft clay on lower-layer or original hydraulically-filled soft clay, so that the lower-layer hydraulically-filled soft clay starts to consolidate as early as possible and the settlement amount can be eliminated as early as possible; the drainage board can be reasonably inserted and paved in the hydraulically-filling process and the time is saved; and in addition, the invention saves money and reduces energy consumption.

The invention relates to a method for reinforcing a soft soil foundation by using a calescence type vacuum preloading way. The method comprises the steps of: introducing a foundation heating system on the basis of a regular vacuum preloading way; and keeping an under-film vacuum pressure and a temperature of shallow-layer soft soil in a reinforcing region respectively above 80 kPa and 62 DEG C within a period of time of a reinforcing period so as to rapidly vaporize pore water of foundation soil and pump the vaporized pore water by vacuum extraction equipment to cause sedimentation of the foundation. Compared with the prior art, the method for reinforcing the soft soil foundation by using the calescence type vacuum preloading way has the advantages of shorting the construction period, improving reinforcing effects, reducing settlement after the construction, increasing the bearing capacity of foundation soil and the like.

The invention discloses a reinforced soil bank wall structure suitable for beach zone soft soil foundation conditions, namely a reinforced soil bank wall structure based on a beach soft foundation. The reinforced soil bank wall structure comprises plastic drainage plates arranged in soft soil, drainage under layers paved on the surface of the soft soil, a bagged sand quilt cofferdam, prefabricated wall panels used for protection and soil blocking, reinforced belts previously buried in the bagged sand quilt cofferdam, a filling material between the wall panels and the bagged sand quilt cofferdam, pile foundations below the panels, copestone above the panels and reverse filtering geotextile behind the bagged sand quilt cofferdam. The structure is implemented step by step, and the deformation of the soft soil foundation and the cofferdam is basically finished before the wall panels are constructed, so that post-construction settlement and uneven settlement are reduced. The bagged sand quilt cofferdam can also be used as the construction platform of the wall panels and the pile foundations, so that intertidal zone construction is changed into land construction, and construction conditions are improved. The structure can adapt to the bearing capacity and deformation of the soft soil foundation, is simple in construction technology, can be constructed by stages, and saves investment.