568 results about "Subsurface flow" patented technology

The invention relates to a subsurface flow simulating and predictive analysis method which comprises the following steps of: dynamically observing and collecting groundwater date of a mining area, integrating the groundwater data into a graphic workstation by utilizing a data engine, automatically establishing a finite element mesh model of the dynamic water level of each water layer, and determining parameter partitions and corresponding parameter values so as to realize the dynamic analog of water level of the water layer and the simulation of groundwater migration; and carrying out the simulation of a groundwater seepage field and the dynamic and real-time simulation of aquifer in designed software and hardware environments, and carrying out interactive analysis, prediction and evaluation on various models in the VR environment and the WEB environment by using tools such as interactive operation, information inquiry, and the like. The method can provide the scientific basis of reasonably developing and utilizing water resources for the future development and the evolution tendency of groundwater resources, and achieves low overall cost, easy popularization and use as well as flexible and reliable operation.

Two sliding sleeves are carried in a tubular pipe assembly for controlling the opening and closing of flow passages extending through the pipe wall. The pipe assembly is placed at the lower end of a tubing string disposed in a well to regulate the flow of fluid from the string into a subsurface well formation. The first sleeve extends between upper and lower seals disposed above and below the flow passage to close the flow passages to flow. A shifting tool operated from the well surface moves the sleeve axially down through the pipe assembly to open the flow passages, leaving the upper seal exposed. The shifting tool then moves the second sleeve axially down through the pipe to cover the exposed seal. Fluid pumped through the pipe exits freely through the flow passages without first having to flow through radial flow passages in the sliding sleeve to prevent erosion of the flow passages and the sleeve structure. The two sleeve sections protect the upper and lower seals and sealing surfaces from erosion as fluid is pumped.

The system of subterranean wells includes a subsurface flow line 20 having at least a portion within or underlining one or more subterranean formations 12. One or more drainage wells 26, 28, 30, 32, and 34 each extend from the surface and intercept at least one of the subterranean formations at a respective interception location. A lower portion of each drainage well is in fluid communication with the subsurface flow line. A recovery well 42 extends from the surface and is also in fluid communication with the subsurface flow line, so that fluids entering the drainage well flow into the subsurface flow line and then into the recovery well.

The invention discloses a device for simulating a pollutant migration and transformation process of purple soil slope farmland. The device comprises a soil bin, an artificial rainfall device and a slope ground surface incoming flow simulating device, wherein the soil bin is filled with purple soil and placed obliquely; slope ground surface incoming flow is simulated by the slope ground surface incoming flow simulating device in a manner that a peristaltic pump supplies water to an overflow water tank and enables the overflow water tank to overflow; a water conveying pipe of the artificial rainfall device is provided with a plurality of spray heads, and the spray heads are evenly arranged relative to the surface of the soil bin; and a plurality of surface runoff sampling ports and subsurface flow sampling ports are formed in the tail end of the soil bin and side faces of purple soil. According to the device disclosed by the invention, rainfall, slope incoming flow and the coupling of the rainfall and the slope incoming flow can be simulated, the temporal and spatial distribution characteristics of purple soil slope farmland pollutant migration and transformation in multiple hydrological processes are researched through adjusting various factors, and thus, the device is used for disclosing an interaction mechanism between the surface runoff and subsurface flow of the purple soil slope farmland and the pollutant migration and transformation.

The invention provides a compound manual marsh system formed by the combination of surface flow and horizontal subsurface flow of a sunken plant type according to different oxygen dissolving environments and different oxygenizing effects of emergent aquatic plants, sunken plants, floating plants and other aquatic plants in the surface flow constructed wetland horizontal subsurface flow constructed wetland. Sunken plants are planted on a surface flow constructed wetland processing bed unit to increase the oxygen dissolving concentration of the unit and reinforce the nitrification of the unit, and the horizontal subsurface flow constructed wetland can easily form an anaerobic environment. The manual marsh environment of anaerobic and aerobic alternation can be formed by combining the two kinds of constructed wetlands together to be helpful for the step removal of nitrogen and phosphor.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment tridimensional artificial wetland system that is used for the industrial waste water treatment of small-scale isolated pollution sources. The invention aims at providing a tridimensional artificial wetland system that is used for sewage treatment and that has small floor occupancy, high hydraulic load, high pollution load and long service life so as to overcome the defects of the current sewage treatment of big artificial wetland floor occupancy, low hydraulic load, low pollution load and short system service life. The key points of the invention are that: the artificial wetland for sewage treatment adopts a tridimensional assembled structure of vertical current artificial wetland and horizontal subsurface flow artificial wetland, and base materials are filled in various directions to form the tridimensional artificial wetland system for sewage treatment; the tridimensional artificial wetland system for sewage treatment comprises a water collecting header, a porous water-filtering vertical current artificial wetland bed, a first-stage regulating tank, a water drop chute, a grid tank, a second-stage regulating tank, a horizontal subsurface flow artificial wetland bed and a water collecting tank.

The present invention relates to a deep denitrification process and device for domestic sewage without additional carbon source. The present invention is a combination process composed of anaerobic acidification tank, micro-aeration vertical underflow wetland and horizontal underflow wetland. The specific process is as follows: The domestic sewage enters the anaerobic acidification tank; the effluent from the anaerobic tank enters the micro-aeration vertical subsurface flow wetland; the treated sewage from the micro-aeration vertical subsurface flow wetland enters the horizontal subsurface flow constructed wetland. The effluent from horizontal subsurface flow wetlands can be used to supplement static landscape water bodies and other purposes. The present invention controls the ratio of NH4+-N/NO3--N in the horizontal subsurface flow wetland influent to 1-1.4:1 through the adjustment of appropriate process parameters, and the actual BOD5/N is far lower than the theoretical value of denitrification BOD5/N Under these conditions, anaerobic ammonium oxidation can be stably realized in constructed wetlands, forming a low-cost, high-removal sewage deep denitrification process. Micro-aeration vertical flow wetlands + horizontal subsurface flow wetlands can be applied to sewage treatment plants. Advanced water treatment can also be used for decentralized domestic sewage treatment. The invention has the advantages of simple structure, low cost and convenient operation and maintenance, and can achieve a TN removal rate of over 95%, stable pollutant removal effect, and effluent water quality up to Class IV standard of surface water.

The invention provides an artificial wetland with combined fillers for the advanced treatment of the effluent coking wastewater of iron and steel enterprises, which sequentially comprises a water inlet area, a wetland processing unit area and a water outlet area, wherein the wetland processing unit area sequentially comprises a gravel filler section, an iron carbon filler section and a manganese sand filler section; and a soil covering layer and wetland plants are arranged on the surface of the wetland. By using iron carbon, manganese sand and gravels as combined fillers and using emerging plants (such as cattail, Scirpus tabernaemontani, Thalia dealbata, reed and the like) having large biomass, salinization resistance and high metal and organic substance adsorptive power as a composite plant bed, the invention forms a horizontal subsurface flow artificial wetland. Thus, when industrial waste water moves into the artificial wetland, pollutants can be removed on the basis of a series of physical, chemical and biological interaction among the fillers, plants and microorganisms. The process provided by the invention has high pollutant shock load resistance and good treatment effect. Besides, the outlet water is stable, and main indexes of the outlet water can meet the Reuse of Urban Recycling Water-Water Quality Standard for Industrial Uses (GB/T 19923-2005). Thus, the outlet water can be recycled as circulating cooling water for steel enterprises.

An airborne exploration system used with an aircraft for shallow and deep exploration for oil and gas, mineral deposits and aquifers. The survey system uses natural electromagnetic EM fields as an energy source. The exploration system includes a pair of aerodynamic housing pods adapted for mounting on wing tips of the aircraft. The housing pods include electric field sensors with three orthogonal electric dipoles oriented along an X, Y and Z axis. An optional third set of orthogonal electric dipoles can be mounted in the tail of the aircraft. The field sensors are electrically attached to angular motion detectors mounted inside housing pods. The motion detectors are used for compensating for errors caused by angular motion of the aircraft when in the presence of strong electric field gradients. The system also includes a total field magnetometer mounted in the aircraft. The various filtered outputs of the magnetometer are used to provide phase and amplitude references for the similarly filtered and angular motion corrected outputs of the electric field sensors. The electric field data when normalized and phase referenced against the magnetic field data provides valuable geological and geophysical information related to the subsurface flow of telluric currents.

The invention discloses a power-free integrated constructed wetland waste water treatment technology. The technology is characterized in that a vertical-flow waste water ecological purifying tank is divided into an upper region and a lower region; a waste water pre-treatment system is one or more pre-treatment processes of a grid, a three-grid type settling tank and an anaerobic tank, living waste water after the pre-treatment enters a water distribution system by being lifted by a water pump or relying on the natural liquid level height difference; the waste water after the pre-treatment is evenly distributed on a nitrification region of the vertical subsurface flow ecological purifying tank through a cross water distribution pipe network and is sequentially vertically penetrated in the nitrification region and an artificial matrix layer of a denitrification region; the water distribution system implements intermittent water distribution for the ecological purifying tank and is provided with a power-free gas distribution system at the bottom and in the upper nitrification region for realizing the continuous oxygen restoration of the nitrification region; outlet water of the upper nitrification region directly enters the lower denitrification region; a water collecting and water outlet system is arranged in the lower denitrification region, a water collecting port is arranged below the denitrification region, and a water outlet is arranged above the denitrification region, thereby leading the outlet water to maintain a certain water level in the denitrification region. The technology can realize the power-free natural oxygen restoration of the wetland, occupy small area and realize the nitrification-denitrification integrated high-efficient nitrogen removal.

The invention discloses a subsurface flow constructed wetland system of secondary effluent from a sewage treatment plant and an application thereof, and the subsurface flow constructed wetland system comprises a subsurface flow constructed wetland device, water passing tracery walls are respectively arranged on the water inlet side and the outer outlet side of the subsurface flow constructed wetland device, the water passing tracery walls are provided with water seepage holes, a wetland matrix and wetland plants are arranged between the water passing tracery walls on the two sides, and a bottom artificial aeration device is arranged at the bottom part of the subsurface flow constructed wetland device; a pre-aeration device is arranged outside the water passing tracery wall on the water inlet side, and a water collection device is arranged outside the water passing tracery wall on the water outlet side; and a high-level water tank is arranged on the water inlet side, the horizontal position of the high-level water tank is higher than the pre-aeration device and the subsurface flow constructed wetland device, and the high-level water tank is communicated with the pre-aeration device through a water inlet pipe. The subsurface flow constructed wetland system has the advantages of simple structure, low energy consumption, low cost, high nitrogen and phosphorus removal efficiency, small occupied area, convenient operation management, convenient sampling and the like. The subsurface flow constructed wetland system is particularly applicable to treatment of the secondary effluent of the urban sewage treatment plants and applicable to the treatment of other micro-polluted water.

The invention relates to an An/O type composite artificial wetland system for the enhanced treatment of low-C/N ratio wastewater. The invention relates to a wastewater treatment apparatus, which is a land treatment apparatus suitable for treating low-C/N ratio wastewater and recycling treated water. According to the An/O type composite artificial wetland system, wastewater sequentially flows through a horizontal subsurface flow wetland and a vertical subsurface flow wetland, effluent water part then flows back into the horizontal subsurface flow wetland, and a dissolved oxygen (DO) gradient is utilized to couple aerobic ammonia-oxidizing bacteria (AOB), nitrite-oxidizing bacteria (NOB) and anammox in the vertical subsurface flow wetland by means of effluent water level regulation in order to enhance the low-C/N ratio wastewater denitrification efficiency of the An/O type composite artificial wetland system. Broken bricks, oyster shells and other packing with large specific surface area, high porosity and good adsorbability are filled in the composite artificial wetland system, consequently, the amount of organisms held by the system is greatly increased, and high phosphorus-and-nitrogen-removing efficiency is guaranteed. The An/O type composite artificial wetland system has the advantages of simple structure, multiple functions, high efficiency, low cost and the like, is easy to operate and manage, can stably operate, and can synchronously remove carbon, nitrogen and phosphorus, the treated effluent water can be directly recycled, landscape plants can be planted on the ground surface, and the An/O type composite artificial wetland system can be combined with ecological construction and city and town greening functions.

The invention relates to a municipal wastewater treatment system (STAR) for forming a wastewater treatment plant (PTAR), characterized by the functional and structural relationship between the components thereof. The invention comprises seven treatment stages in the STAR and the arrangement thereof, including: an intake regulator box having a discharge outlet; a pretreatment stage consisting of solid separation screens and grit channels; and anaerobic biodigester; an up-flow anaerobic filter; drying beds; subsurface flow constructed wetlands; and a chlorine contact channel. The STAR and PTAR according to the invention are suitable for use in a single home, as well as for use by communities of approximately 5,000 (thousand) inhabitants, and their capacity can be increased to the extent that new elements are provided at each of the different steps, simply by adding and adapting modules, without having to replace the already operating elements.

The invention relates to the technical field of sewage treatment, and particularly relates to an enhanced nitrogen removal horizontal subsurface flow constructed wetland system taking thermoplastic biodegradable polyester as a solid carbon source. The system comprises a water inlet pipe (1), a water distribution region (2), a wetland coarse stuff region (3), a wetland fine stuff region (4), a solid carbon source throwing pipe (5), a solid carbon source enhanced denitrification region (6), wetland plants (7), a water collection region (8), water outlet holes (9), a water drainage region (10) and a discharge pipe (11). The wetland system can increase the carbon-nitrogen ratio of sewage and realize the removal of nitrate in low-carbon-nitrogen-ratio sewage. The system has the advantages of high continuous nitrogen removal capacity, simple operating maintenance and the like.

The invention provides a subsurface flow and surface flow complex manmade wetland. The complex manmade wetland comprises a land, a subsurface reservoir and a surface reservoir, a surface collecting pool and a subsurface collecting pool. One side of the land is provided with the subsurface reservoir and the surface collecting pool, and the other side of the land is provided with the subsurface collecting pool and the surface collecting pool. The subsoil of the land is filled with a gravel layer, and the upper soil is covered with a pastoral earth; the filling depth ratio between the gravel layer and the pastoral earth is 3: 2. Emersed plant, floating plant and submerged plant are planted on the pastoral earth of the upper soil of the land; the subsurface collecting pool is communicated with the surface reservoir through a water pipe equipped with a valve. The invention combines the advantages of subsurface wetland and surface wetland such as high water purification efficiency, high water quality, high hydraulic load, low investment and operational charge, and good treatment effect; according to actual need, a plurality of measures can be used such as alternatively adopting subsurface flow and surface flow, subsurface flow and surface flow.

The invention discloses a method and a device for treating domestic sewage from villages and towns. The method for treating domestic sewage from villages and towns comprises the following steps of feeding domestic sewage from villages and towns orderly through a grading multiphase anaerobic unit for enhanced biological granulation, so that the chemical oxygen demand (COD) in the domestic sewage is eliminated, and binding a subsurface flow wetland unit for enhanced phosphorous removal with a plant by a filling material so that phosphorous sorption and adsorption, ammonia nitrogen nitration and particle filtration interception are finished. A porous filling material in the grading multiphase anaerobic unit can cooperate with an enhanced biological granulation process so that granule sludge formation is accelerated and load treatment and impact resistance capacities of the grading multiphase anaerobic unit are improved. Through tap water sludge and reasonable plant configuration in the subsurface flow wetland unit, effects of removing nitrogen, phosphor and particles are improved. The device suitable for the method comprises a water pump, a blending tank, a flowmeter, the grading multiphase anaerobic unit and the subsurface flow wetland unit. The method for treating domestic sewage from villages and towns has good effects of removing organic matters in domestic sewage, a relatively small floor space, a low operation cost and simple processes.

The invention relates to a snow melting system and a method for recycling accumulated snow, particularly to a hot-air circulating two-layered snow melting system and the method for recycling accumulated snow, which solve the problems that the existing method for treating the accumulated snow wastes resource and pollutes the environment. The hot-air circulating two-layered snow melting system includes a two-layered subsurface-flow constructed wetland landscape pond and a snow melting well, wherein the snow melting well includes a thermal insulation cover, a well wall, a thermal insulation operation door, a heating grate A, a heating layer, a bottom heating pipe, a water drain pipe, a first step, a first rotating shaft, a heating vertical pipe, a groove and a filter grating. The method includes the following steps: collecting the accumulated snow, throwing the accumulated snow into the snow melting well through the thermal insulation operation door, and carrying the melted snow to the two-layered subsurface-flow pond through the deposited and overflowed clear water. The hot-air circulating two-layered snow melting system avoids the environmental pollution caused by snow melting agent, as well as the resource waste caused during accumulated snow transferring and toppling, is environment-friendly, facilitates the timely accumulated snow treatment, avoids the pollution caused by long-time exposure, and solves the road freezing problem caused by repeated freeze-thaw. The method is used for recycling the accumulated snow.

The invention discloses a subsurface-flow water supply culture method of Babylonia, belonging to the technical field of aquiculture. The method comprises the following steps of: (A) establishing a subsurface-flow culture pond of the Babylonia; (B) spreading Babylonia larvae on a supporting nozzle plate for culturing, and spreading a layer of sand grains on the Babylonia larvae layer; (C) enabling natural sea water or artificial sea water to flow into the culture pond through a water inlet pipe from the lower part of a culture medium; and (D) refreshing the natural sea water or the artificial sea water in the culture pond once through the water inlet pipe and a water outlet pipe every 3-7 days until the culture period of the Babylonia finishes. The invention also discloses a subsurface-flow water supply culture device of the Babylonia. The culture method of the invention does not depend on microorganisms to purify the culture environment but directly purifies and controls the culture environment through water flow and air inflation. In the culture process, sand grains of which the average diameter is 2mm-10mm are selected, thereby greatly enhancing the water flow permeability of the sand layer and effectively reducing the occurrence of Babylonia diseases.

The invention discloses a method for remedying the micro-polluted water body. The method comprises the following steps: 1) the micro-polluted water body firstly enters a first-stage water treatment area to perform sand settling and uniform water distribution; 2) the water body secondly enters a second-stage water treatment area-wetland bed, wherein the wetland bed is mainly composed of filler anda water plant, the water plant is giant reed, the filler is composed of upper filler and lower filler, the upper filler is gravel and the particle size is 5-10mm; the lower filler is the shale brick,the particle size of the shale brick is 10-60mm and the root system of the water plant grows in the filler; and 3) the water body finally enters a third-stage water treatment area to homogenize the effluent quality, and the water body can be discharged and enter the outer water body. The system has the following advantages: (1) no energy is consumed, the system is difficult to block; (2) the investment is low, the system is convenient to operate and manage; (3) the shock resistance is strong; and (4) the nitrogen-phosphorus removal rate is high and the system has a certain economic benefit.