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9 results about "Filter strip" patented technology

Filter strips, also referred to as buffer strips, are small, edge-of-field tracts of vegetated land that are used to reduce the contamination of surface water. They are primarily used in agriculture to control non-point source pollution, however, they may also be used to reduce sediment in storm water runoff from construction sites. There are several types of filter strips including vegetative filter strips, forested riparian buffers, and wind buffers. In agriculture, they are highly effective in reducing the concentration of nitrogen (N) and phosphorus (P) in runoff into surface water and are also effective in reducing sediment erosion and removing pesticides. This helps to prevent eutrophication and associated fishkills and loss of biodiversity. The use of filter strips is very common in developed countries and is required by law in some areas. The implementation and maintenance of filter strips is inexpensive and their use has been shown to be cost effective.

A water-resistant and pollution-proof device for water conservancy projects

This utility model relates to the field of water conservancy engineering technology, specifically a water-resistant and pollution-resistant device for water conservancy projects. It includes a fixed frame, a filter element for filtering waste is disposed in the middle of the fixed frame, and a support base is disposed on the upper right side of the fixed frame. The filter element includes multiple filter strips evenly distributed in the middle of the fixed frame. Multiple evenly distributed fixing plates are slidably connected to the inner wall of the filter strips. A guide plate is disposed on the upper part of the filter strips, with one end of the guide plate away from the filter strips located on the upper right side of the fixed frame. In this water-resistant and pollution-resistant device for water conservancy projects, when the fixing plates rotate inside the filter strips, they can carry waste upwards along the filter strips. When the fixing plates move to the position of the guide plates, the waste slides away from the device along the guide plates. As the fixing plates slide, they can simultaneously push the waste between two adjacent filter strips away, thus ensuring that the multiple filter strips remain unobstructed at all times.
Owner:NINGXIA WATER INVESTMENT ZHONGYUAN WATER CO LTD TONGXIN BRANCH

A dust treatment device for dry-mixed mortar bagging

PendingCN122441196AWater dischargeWastewater
The present application relates to the technical field of dust treatment, and particularly relates to a dust treatment device for dry-mixed mortar bagging, which comprises a water tank, one side of the water tank is fixedly connected with a side cavity, the other side is connected with a liquid inlet and a liquid outlet, the top is fixedly connected with a cover through two side plates, the inside of the side cavity is fixedly connected with a dust inlet pipe extending to the outside of the water tank, and the end of the dust inlet pipe is connected with a plurality of branch pipes. The dust-containing airflow is cut into fine bubbles through the plurality of branch pipes at the end of the dust inlet pipe, the gas-liquid contact specific surface area is increased, the dust capture efficiency in unit volume is significantly improved, the secondary dust raising is suppressed from the source, the power is converted into the step-by-step movement of the transmission filter belt assembly and the vertical extrusion of the pressing plate through the cooperation of the bidirectional rack and the transmission gear, the cooperative operation mode of simultaneous treatment and extrusion is realized, and the amount of waste water discharged and the water changing frequency are reduced.
Owner:XIANGYANG CRAFTSMAN MORTAR CO LTD

A filter press with a mud-closing device

This utility model relates to the technical field of sludge distribution devices, and in particular to a sludge distribution device for a filter press. In use, the drive motor is started, causing two sets of conveying rollers, in conjunction with multiple sets of auxiliary rollers, to drive the filter belt to rotate counterclockwise. Sludge is laid on the filter belt from left to right through the sludge distribution assembly, reducing the inertial impact of the sludge on the filter belt and improving the uniformity of sludge distribution. The device includes a frame, a drive motor, conveying rollers, and a filter belt. Two sets of conveying rollers and multiple sets of auxiliary rollers are rotatably arranged inside the frame, with the auxiliary rollers positioned between the two sets of conveying rollers. A drive motor is mounted on the frame, and its output end is connected to one end of one set of conveying rollers. The filter belt is fitted around the two sets of conveying rollers. The device also includes a sludge distribution assembly and a dispersing assembly. The sludge distribution assembly is mounted on the frame, and multiple dispersing assemblies are installed at the top of the frame.
Owner:SHANDONG JINXIU SHANHE ENVIRONMENTAL ENG CO LTD

Energy-saving high-efficiency belt filter for sludge dewatering

ActiveCN224313403USludge treatmentElectric machineBelt filter
The utility model discloses sludge dehydrator room energy -conserving type efficient dehydration belt filter press structure, including belt filter press, be provided with filter screen belt on the belt filter press, install L type support frame on the belt filter press, install sludge delivery pipe on L type support frame, slidingly install movable frame on L type support frame, the utility model discloses, when using can connect sludge delivery pipe with sludge delivery pipeline to deliver sludge to the material stirring rod place, open electric push rod simultaneously to drive material stirring rod reciprocating movement, make material stirring rod stir sludge, make sludge can scatter on filter screen belt, then open motor can drive two spiral material stirring board rotation, while conveying sludge of filter screen belt, the two motor of rotation can stir sludge more than its height to two sides, ensure that sludge can even spread on the surface of filter screen belt, help to promote sludge layer overall thickness evenness, make moisture can evenly permeate in the filter band operation process, shorten dehydration time.
Owner:YONGZHOU BEIKONG WASTEWATER PURIFICATION CO LTD

A slurry dewatering device

This utility model discloses a sludge dewatering device, including a belt filter press. The belt filter press is equipped with a spraying mechanism and a filter belt cleaning mechanism. The belt filter press includes an equipment frame, an upper filter belt, a lower filter belt, and filter rollers. The filter rollers, upper filter belt, and lower filter belt are mounted on the equipment frame. A sludge inlet is provided at the upper end of the equipment frame, and a sludge outlet is provided on the side of the equipment frame. The filter belt cleaning mechanism includes a drying cylinder, a blower, a heating wire, a striking roller, and a motor. The drying cylinder is located on the upper and lower sides of the lower filter belt. The heating wire is installed inside the drying cylinder. The blower is connected to the drying cylinder through a ventilation pipe. An air outlet is provided on the drying cylinder near the lower filter belt end. The motor is fixedly mounted on the equipment frame. This utility model has the advantages of high-efficiency dewatering, automatic filter belt cleaning, and simple operation, solving the problems of easy clogging of filter belt pores, low dewatering efficiency, and reliance on manual cleaning in traditional equipment when treating river and lake sludge.
Owner:SHANDONG JIANZHU UNIV

A belt filter press

ActiveCN224442360UBelt filterFilter press
This application discloses a belt filter press, including a frame and a first filter belt, a second filter belt, and a third filter belt arranged sequentially from top to bottom. A gravity dewatering zone is formed above the first filter belt, and a pre-compression zone is formed above the second filter belt. The lower layer of the second filter belt and the upper layer of the third filter belt together form a pressing dewatering zone. A first baffle plate, a second baffle plate, a third baffle plate, and a fourth baffle plate are respectively installed on the inner side of the first filter belt, the bottom of the first filter belt, the inner side of the second filter belt, and the inner side of the third filter belt to collect the filtrate dripping from the upper filter belt. This application can solve the problem of increased sludge moisture content caused by filtrate dripping in traditional methods. By independently collecting and guiding the filtrate generated in each zone corresponding to different dewatering stages to the outside of the belt filter press for discharge, it avoids upstream filtrate entering the downstream dewatering zone. Therefore, it can better dry the sludge, avoid the squeezed filtrate returning to the sludge through the filter belt, and improve sludge dewatering efficiency.
Owner:王楚仪 +1