243 results about "Constructed wetland" patented technology

The invention provides a low-carbon modular artificial wetland system and a carbon sink collaborative purification method thereof, and relates to the technical field of artificial wetlands, the low-carbon modular artificial wetland system comprises a modular box body, and a water inlet layer, a carbon sink layer and a purification layer which are sequentially arranged in the modular box body from top to bottom; the water inlet layer is used for filtering suspended matters through coarse sand; the carbon sequestration layer is used for adsorbing carbon dioxide through biochar and carbon sequestration microorganisms, and meanwhile, the carbon sequestration capacity is enhanced through the plant-microorganism synergistic effect; the purification layer is used for purifying a water body through an iron-based phosphorus removal material and a zeolite denitrification filler. The technical problems of low-carbon material selection, carbon sink potential excavation, renewable energy source coupling and greenhouse gas emission inhibition of an existing constructed wetland system are solved, the technical effects of efficient sewage purification and carbon emission reduction are achieved, and a carbon emission reduction closed loop of the whole life cycle is achieved.

An ecological combined constructed wetland system for rare earth mine tail water treatment is characterized in that a downward vertical flow wetland and an upward vertical flow wetland of a three-stage combined wetland system are communicated through a bottom communicating pipe, and the upward vertical flow wetland and a floating island wetland are communicated through an upper overflow weir; the tail water treated by the sewage adjusting tank sequentially flows through the downward vertical flow wetland, the upward vertical flow wetland and the floating island wetland; each of the downward vertical flow wetland and the upward vertical flow wetland comprises a filler layer with a three-layer structure, and the upper layer is a plant substrate layer and is composed of fine sand or sandy loam; the middle layer is a functional material layer and is composed of hematite, zeolite or activated carbon; the lower layer is a supporting layer and is composed of coarse sand or gravel; and the aquatic plants of the floating island wetland adsorb pollutants in the water body through root systems, and decompose residual pollutants by utilizing the metabolism of the plants. The tail water treatment device can efficiently remove particular pollutants such as ammonia nitrogen, nitrate nitrogen, heavy metals and rare earth elements in the tail water of the rare earth mine.

The present application relates to the technical field of leakage detection, in particular to a method and system for detecting leakage of an anti-seepage layer in the construction of an artificial wetland, which determines the seepage time period in which each electrode grid may produce seepage by analyzing the changes in the potential difference data and humidity data of the electrode grid below the anti-seepage layer; based on the seepage time period, analyzes the coincidence of liquid diffusion between different electrode grids, and divides the electrode grid into several diffusion regions; divides the diffusion regions into suspected damage regions and diffusion interaction regions, and analyzes the area relationship between the suspected damage regions and the diffusion interaction regions to obtain the seepage damage probability of the diffusion region corresponding to each electrode grid; and according to the seepage damage probability, marks the leakage point region. Through the present application, the region where the anti-seepage layer may be damaged and diffused can be more accurately positioned, the accuracy of identifying the specific position of the anti-seepage layer where leakage occurs is improved, and the credibility of the leakage detection result of the anti-seepage layer is further improved.

The utility model discloses a compound circulating type constructed wetland tail water treatment system, and belongs to the technical field of water treatment systems. The system comprises a vertical subsurface flow wetland, a horizontal subsurface flow wetland and a surface flow wetland which are sequentially connected in series, tail water firstly passes through a water distribution unit of the vertical subsurface flow wetland, passes through a first multi-layer filler from bottom to top, and then passes through a second multi-layer filler from bottom to top; according to the utility model, the three wetland systems are combined, and are strengthened in the circulating plug-flow type surface flow wetland, the function division is reasonable, the operation is simple, the operation is convenient, the cost is low, the operation is convenient, the operation is simple, the operation is convenient, the operation is convenient, the operation is convenient, and the cost is low. The tail water firstly enters the vertical subsurface flow wetland and the horizontal subsurface flow wetland to intensively remove various types of pollutants such as organic matters, nitrogen and phosphorus, and subsequently enters the surface flow wetland, and the submerged plants at the water bottom and the emergent aquatic plants on the water surface act together to intensify the purified water quality and improve the purification effect of the tail water.

The utility model provides a kind of artificial wetland of urban sewage treatment, including preliminary filter box and wetland body, the left side of preliminary filter box is connected with inlet pipe, the right side of wetland body is located preliminary filter box, the right side of preliminary filter box is connected with drain pipe, the middle end of drain pipe is fixedly installed with water pump, the end of drain pipe away from preliminary filter box is connected into the inner chamber of wetland body, the outside of preliminary filter box is fixedly installed with fixed frame, the surface of preliminary filter box is provided with cleaning mechanism, the cleaning mechanism includes motor, driven gear, support frame and frame, by setting cleaning mechanism, it can effectively avoid after carrying out preliminary filtration to sewage, due to the influence of garbage, leading to sewage cannot normally flow into the situation occurs in the inner chamber of wetland body, while reducing the step of manually fishing garbage in the inner chamber of preliminary filter box, reduce the waste of artificial cost.

The invention discloses a lake-entering estuary wetland system. The sewage treatment device sequentially comprises a water inlet unit, a speed reduction and siltation promotion area, a deep turbidity reduction area, an enhanced purification area, a water quality stabilization area and a water outlet unit in the water flow direction, the lake-entering estuary wetland system is separated from the lake through an embankment; the water inlet unit comprises a wetland water inlet gate and a flood discharge gate. Aiming at the special hydrology and water quality conditions of the estuary entering the lake, the invention solves the problems of low plant survival rate, easy system blockage, unstable purification efficiency and the like in the existing constructed wetland system.

The utility model relates to an enhanced denitrification device for a microbial electrolysis constructed wetland. The enhanced denitrification device comprises a constructed wetland system, an electrolysis system and an intelligent control system, the constructed wetland system comprises a water distribution area and a constructed wetland reaction area; a water inlet device is arranged in the water distribution area, and the water distribution area is communicated with the constructed wetland reaction area through the water inlet device; wherein an electrolysis system and an intelligent control system are also arranged in the constructed wetland reaction zone. The device has the advantages that the removal of pollutants, mainly nitrogen, of the constructed wetland is enhanced by mainly utilizing external voltage in the electrolysis system 2, and the water inlet flow, the external voltage and the distance between the electrodes can be adjusted according to the intelligent control system 3, so that the surface hydraulic load of the constructed wetland and the current intensity in the wetland are controlled; and the two systems cooperate to enhance the removal of pollutants, especially nitrogen, of the constructed wetland, so that the pollutants in water are efficiently removed, the water quality of discharged wastewater is improved, and the environmental water quality is improved.

The present application relates to the technical field of sewage treatment, in particular to a method for recycling and utilizing rural domestic sewage. Based on rural domestic sewage, the method effectively reduces the concentration of organic matter and the content of nitrogen and phosphorus in the domestic sewage after anaerobic-aerobic treatment. The aerobic effluent still contains sufficient nitrogen, which can be directly used for irrigation after precipitation. The sludge obtained from the sedimentation tank contains rich phosphorus, which can be extracted by carbonization and acid leaching of the sludge, and used for supplementing phosphorus for crops. When the effluent from the sedimentation tank needs to be discharged, it is further treated by artificial wetland, and the carbonization residue of the sludge is made into filler for the artificial wetland, which has good water purification effect, realizes the treatment and recycling of water resources, and has important significance for environmental protection and resource conservation.

The invention provides a method and a device for predicting the effluent concentration of pollutants in a constructed wetland based on machine learning, and the technical key points are as follows: constructing a multi-feature data set by collecting data including environment operation conditions, water quality parameters and wetland conditions of the constructed wetland; an initial constructed wetland water quality prediction model is constructed, and the processed multi-feature data set is trained through four single-output machine learning models of a random forest, gradient lifting, limit gradient lifting and a gradient lifting decision tree; a plurality of indexes are adopted to evaluate the prediction performance of the four single-output machine learning models on the test set, and an optimal single-output model with the optimal comprehensive performance of the indexes is obtained; establishing a multi-target joint prediction model of multi-output regression by using the optimal single-output model, and predicting the water quality index of the effluent of the constructed wetland; and sorting the importance of different target variables which are explained by the multi-target joint prediction model and are influenced by the multi-target joint prediction model through an SHAP method.

This invention belongs to the field of environmental pollution control technology, specifically relating to a clog-resistant and low-maintenance constructed wetland system. The clog-resistant and low-maintenance constructed wetland system is characterized by comprising a sludge removal system, a purification system, and water supply pipelines. The sludge removal system includes a perforated load-bearing plate, with the purification system installed on top of the plate. The bottom of the plate has a sedimentation layer, which is connected to the outside environment through a sludge removal channel. The purification system includes a packing layer, a collection channel, and a spiral sedimentation column. The packing layer is connected to the perforated load-bearing plate, and the collection channel contains the spiral sedimentation column. The water supply pipeline includes an inlet pipe and an outlet pipe, which are respectively located on both sides of the purification system. This invention can significantly improve the purification effect of constructed wetlands and reduce the difficulty and workload of their operation and maintenance.

The invention discloses a soil remediation and sewage purification integrated ecological treatment device which comprises a vertical flow artificial wetland region, a horizontal subsurface flow artificial wetland region and an ecological purification region which are sequentially arranged in the water flow direction, so that soil remediation and sewage purification are organically integrated, sewage can be purified, heavy metal can be prevented from migrating to soil, and the soil remediation and sewage purification effects are improved. The composite filler in the vertical flow artificial wetland realizes resource utilization of the polluted soil, the composite filler in the horizontal subsurface flow artificial wetland removes multiple pollutants in a targeted manner, and intermittent aeration is matched to improve the microbial activity, so that efficient green treatment of sewage and soil is realized. Soil in-situ remediation and sewage pretreatment are achieved in the vertical flow artificial wetland, pollutants are deeply purified and prevented from leaking in the horizontal subsurface flow artificial wetland, deep nitrogen and phosphorus removal and heavy metal absorption are achieved at the tail end of the ecological purification area, the risk of secondary pollution can be effectively avoided, and it can be ensured that the effluent quality stably reaches the standard.

The utility model discloses a modularized artificial wetland experimental device which comprises a stuffing box, a plurality of groups of isolation net-shaped partition plates are arranged in the stuffing box from top to bottom, the interior of the stuffing box is divided into a plurality of groups of stuffing cavities through the isolation net-shaped partition plates, and wetland stuffing is arranged in the plurality of groups of stuffing cavities. A plurality of groups of arc-shaped sealing plates corresponding to the packing cavities are hinged to the packing box, sealing rubber strips for sealing are arranged on the edges of the arc-shaped sealing plates, and the sealing rubber strips are tightly pressed and attached to the edges of the packing box; according to the modularized artificial wetland experimental device, only the filler of a certain layer can be replaced under the condition that other layers are not influenced, so that an experiment can be quickly and effectively carried out, the use and the assembly are more convenient, the filler can be replaced according to experimental requirements, the convenience of replacing the filler is improved, and the working efficiency is improved. Therefore, the practicability of the equipment is improved.

The invention relates to the technical field of self-adaptive control, in particular to an AI-driven constructed wetland biological carrier efficiency real-time evaluation and early warning system, which comprises a wetland operation state acquisition module, an AI-driven constructed wetland biological carrier efficiency real-time evaluation and early warning module and a constructed wetland biological carrier efficiency real-time evaluation and early warning module, the current instantaneous power value of the aeration machine and the dissolved oxygen concentration value fed back by the dissolved oxygen sensor are read in real time, a power micro-change increment value is obtained, the pollutant removal rate value of a constructed wetland biological carrier water outlet is synchronously collected, and a carrier environment state data flow is generated. According to the method, when the calculated marginal benefit deviates from the preset optimal energy efficiency benefit threshold value, the aeration power rate is adjusted in a self-adaptive mode, it is ensured that the input of aeration energy is matched with the instantaneous treatment requirement and potential of a biological carrier, conversion from process stability maintaining to resource utilization efficiency maximization is achieved, the treatment effect is ensured, and meanwhile the energy efficiency of the biological carrier is improved. The operation cost is reduced to the maximum extent.

The utility model discloses a rainwater recycling device, which relates to the technical field of rainwater recycling, and comprises a rainwater collecting unit, an ecological purification unit and a water recycling unit, the rainwater collecting unit comprises a water storage disc and a storage pool, the storage pool is used for storing rainwater, a planting disc is arranged in the water storage disc, a rainwater circulating pump is arranged at the bottom of the storage pool, and the ecological purification unit is connected with the rainwater recycling unit. The rainwater circulation header pipe is communicated with the water inlet end of the planting disc, the water outlet pipe is communicated with the water outlet end of the planting disc, the constructed wetland is arranged in the planting disc to ecologically purify rainwater flowing into the planting disc from the rainwater circulation header pipe, and the purified rainwater flows out of the water outlet pipe and flows into the storage pool through the water outlet pipe; the reuse water unit comprises a reuse water pump and a reuse water header pipe, the reuse water pump is arranged in the storage pool, one end of the reuse water header pipe is used for being communicated with the reuse water pump, the other end of the reuse water header pipe is used for being communicated with the purified water collection and utilization unit, the structure is simple, use is convenient, and the energy-saving, low-carbon and environment-friendly requirements are met.

The invention discloses an artificial wetland space optimization arrangement method and system, a non-point source pollution model is constructed based on a hydrological response unit, target meteorological data, target pollution data and an SWAT model, and the simulation precision of the non-point source pollution process can be improved. Climate scene data is constructed through future climate data, a preset path rule and a simple quantile algorithm, and the influence of climate change on pollution load can be reflected. Furthermore, a wetland optimization model is constructed based on a non-point source pollution model and a target function, the scientificity of an optimization strategy is enhanced, candidate wetland areas are identified by a spatial analysis algorithm based on a complex terrain index CTI, and the maximum potential area of each candidate wetland area is counted, so that efficient identification of potential arrangement areas can be realized. The constructed wetland optimization regulation and control scheme is generated based on the preset genetic algorithm, and the constructed wetland space optimization arrangement is performed according to the scheme, so that the optimization and practicability of the constructed wetland layout can be realized.

The invention relates to the technical field of water environment intelligent regulation and control and energy-saving operation control, in particular to a sewage plant and constructed wetland integrated linkage regulation and control method and system.The method comprises the steps that current working condition data of a sewage plant, current working condition data of a constructed wetland and weather forecast data of a first time period in the future are obtained, and a control result is obtained based on the obtained data; predicting the initial values of the effluent quality parameters of the area served by the sewage plant and the constructed wetland after the first time period in the future; determining a sewage plant and constructed wetland combined treatment strategy meeting a first condition based on the effluent quality parameter initial value and a preset water quality parameter threshold value; according to the combined treatment strategy, the process operation parameters of all treatment devices in the sewage plant and the constructed wetland are adjusted respectively, so that the final predicted values of the effluent quality parameters of the sewage plant and the constructed wetland in the first time period in the future meet the preset water quality parameter threshold value, and the comprehensive operation cost of the sewage plant and the constructed wetland is minimum.

The present application belongs to the technical field of water pollution treatment, and particularly relates to a kind of constructed wetland coupled microbial fuel cell and a kind of water pollution treatment method.The modified iron-carbon material in the present application can reduce the inhibitory effect of antibiotics on device electricity generation, well maintain the activity of electricity-generating bacteria, and maintain stable electricity generation of the system;The modified iron-carbon material in the present application not only has efficient electron transport capacity, strengthens electron transfer, but also has a large number of active adsorption sites, can effectively remove ofloxacin, and is helpful for denitrification;At the same time, the surface area of the modified iron-carbon material is huge, and the surface is loaded with Fe, which can improve the removal capacity of phosphorus.The present application realizes efficient degradation of ofloxacin and conventional pollutants by reasonably constructing a constructed wetland coupled microbial fuel cell, and has higher electricity generation performance.

The utility model discloses a scattered household black water treatment and resource utilization device which comprises an anaerobic fermentation tank, an aerobic nitrification tank, a denitrification nitrogen removal tank, a biological aerated filter, a cascade artificial wetland and a water storage tank which are sequentially communicated, a discharging device for discharging biological fertilizer is arranged on one side of the bottom of the anaerobic fermentation tank, and a water outlet higher than the discharging device is formed in one side of the anaerobic fermentation tank. According to the technical scheme provided by the utility model, germs, parasitic ova and the like are killed through anaerobic fermentation, meanwhile, high-quality organic fertilizer can be generated, then the technologies of aerobiotic treatment, anoxic treatment, biofilter treatment, constructed wetland treatment and the like are combined, pollutants in black water are further degraded, the quality of effluent water is improved, and the effluent water is reused for irrigation of vegetable fields, farmlands, forest lands and the like. And the organic fertilizer is recycled to the farmland to improve the soil fertility, so that the effective treatment and resource cyclic utilization of the black water of the scattered households are realized.

The application relates to the technical field of sewage purification treatment, and discloses an artificial wetland sewage purification device and purification method, which comprises a machine body and a stirring device arranged in the machine body and on the right side. The artificial wetland sewage purification device and purification method are provided with a filter assembly. When the impurities filtered by one side of the filter plate are too much to cause blockage after long-time use, the sewage cannot pass through any more. With continuous accumulation, one side of the filter plate moves downward under the action of gravity, can abut against the U-shaped rod to drive the U-shaped rod to move downward, makes the cylinder rotate, the through hole on one side of the cylinder rotates to no longer coincide with the through hole on one side of the baffle, thereby achieving the purpose of blocking the three-way pipe on this side, while the three-way pipe on the other side is opened, so that the filtering operation can be carried out. The staff only needs to pull out the plug-in frame blocking this side, and cleans the filter plate, so that the filter plate replacement and cleaning can be realized without stopping work, and the work efficiency is effectively improved.

The invention discloses an iron-sulfur-carbon-based composite filler for removing florfenicol in tail water, and belongs to the technical field of water treatment materials. The composite filler is composed of charcoal, pyrite, a calcium base, a binder and zeolite in proportion, through the synergistic effect of all the components, an adsorption-reduction-degradation combined mechanism is achieved, and florfenicol in municipal tail water and aquaculture tail water is efficiently removed. The preparation method comprises the steps of ingredient mixing, roller granulation, maintenance forming and the like, is simple in process and low in cost, and can be used for recycling preparation of agricultural and mine wastes. The filler is suitable for constructed wetlands and other water treatment scenes, the removal rate of florfenicol reaches 80% or above, meanwhile, the filler has the removal effect on nitrate nitrogen and other pollutants, and wide application prospects are achieved.

The utility model discloses a biological membrane coupled magnetic field reinforced artificial wetland device, which belongs to the technical field of artificial wetlands and comprises a shell, a biological membrane unit, an artificial wetland unit and an adsorption unit which are sequentially arranged in the shell from left to right. A water inlet pipe and a water outlet pipe are formed on the two sides of the shell respectively, a magnetic strengthening assembly is arranged in the constructed wetland unit, and the magnetic strengthening assembly comprises a permanent magnet, an electromagnetic coil and an electromagnetic generator. The device disclosed by the utility model has the beneficial effects that the device is connected to sewage and wastewater to be treated, efficient nitrogen and carbon removal can be realized through the multi-stage effect of cooperative treatment of the biological membrane unit, the constructed wetland unit and the adsorption unit, and meanwhile, the adjustable magnetic field strengthening assembly is arranged in the device, so that the device is more stable and reliable. The growth and metabolism of microorganisms can be promoted through an adjustable magnetic effect, and the pollutant removal efficiency of the system is further improved.

The invention discloses a novel artificial wetland water treatment test method, and particularly relates to the field of environmental protection and ecological engineering. In order to overcome the defects that a traditional constructed wetland is limited by environmental conditions and is insufficient in treatment efficiency, improvement of the purification effect and the regional adaptability serves as a core target, and wetland form optimization, water flow mode improvement, water level adjustment design, filler combination screening, wetland regional adaptability and other work are carried out. An experiment takes acorus calamus as a purification plant, selects common filler to construct different wetland units, and compares and analyzes treatment effects of different subsurface flow modes, and finds that a horizontal-vertical subsurface flow coupling system is better in pollutant removal, and different matrix combinations have different removal effects on different pollutants. The method has the advantages of low operation cost, low cost, simple maintenance and management, reduction of secondary pollution, ecological restoration and environmental value, promotion of the cyclic utilization of water resources, and development of environmental protection and sustainable development.

The utility model relates to the technical field of constructed wetland structures, in particular to a drainage pipeline type constructed wetland. Comprising a pipeline, a packing layer, a planting layer and a baffling structure, the pipeline is of a water conveying structure which is horizontally arranged, water enters one side of the water conveying structure, water exits the other side of the water conveying structure, and a plurality of planting holes which are formed at intervals in the flowing direction in the pipeline are formed in the upper side pipe wall of the pipeline; the filler layer is a purification filler structure which is filled in the pipeline and can adsorb pollutants in water flow; the planting layer comprises wetland plants which penetrate through the planting holes and are planted on the filler layer in the pipeline; the baffling structure is arranged in the pipeline and used for delaying the water flow velocity in the pipeline. According to the drainage pipeline type constructed wetland suitable for water quality purification, the drainage pipeline and the constructed wetland technology are combined, the dual functions of water delivery and water quality purification are achieved at the same time, the water quality purification capacity is good, and engineering land can be effectively saved.

The application discloses application of phospholipase in promoting phosphorus removal in water body, and belongs to the technical field of water treatment. The phospholipase is added to a wetland or a constructed wetland system, the phospholipase catalyzes degradation of organic phosphorus into intermediates, and then shortens the time for conversion of the organic phosphorus into absorbable phosphorus, accelerates the conversion of the phosphorus into the absorbable phosphorus, improves the absorption efficiency of plants on the phosphorus, and thus improves the removal efficiency of the wetland or the constructed wetland system on the phosphorus in the water body.

The invention provides pseudomonas oryzae and application thereof. The preservation number of the pseudomonas oryzae is CGMCC No.32915, and the pseudomonas oryzae is preserved in the China General Microbiological Culture Collection Center (CGMCC). The microbial agent comprises pseudomonas oryzae. The culture tail water treatment method comprises the following steps: constructing a surface flow constructed wetland; adding a microbial agent to the surface flow constructed wetland for static planting; and diluting the breeding tail water, and injecting the diluted breeding tail water into the surface flow constructed wetland for denitrification treatment. The pseudomonas oryzae provided by the invention can be converted by utilizing the existing nitrogen source and carbon source in sewage, and has the capability of stably accumulating nitrite converted from nitrate in the reaction process. The culture tail water treatment method provided by the invention depends on the synergistic effect of an ecological system, does not need to add a large amount of exogenous carbon sources and mature sludge, has the characteristics of stable operation, low cost and eco-friendliness, and can realize efficient removal of total nitrogen, effectively reduce the pollution risk of tail water and guarantee the ecological safety of a water body.

The application discloses a breeding sewage recycling purification method. The application first uses a water collecting well and a grid to filter large particles and suspended substances such as livestock and poultry hair, excrement and the like, and the filtered sewage flows into an adsorption system, then flows into a disinfection tank and a neutralization tank, and after staying for a period of time, flows into an artificial wetland, and finally is transported into a livestock and poultry farm, wherein the adsorption system is a sandwich type purification system formed by a sponge, self-made biochar and self-made molecular sieve, and the disinfection tank uses a bactericide compounded by a modified quaternary ammonium salt and a banana peel. The breeding sewage recycling purification method in the application has high purification degree of breeding sewage, and various indexes are far lower than the national first emission standard, the purified water can be used in the breeding farm again, secondary recycling of the sewage is realized, and the breeding is linked with planting and landscape viewing, so that higher economic benefits are brought.

The application discloses an artificial wetland-bioelectric Fenton coupling system, which comprises, from bottom to top, a gravel layer, a biological anode carbon felt, a wetland layer and a floating electric Fenton cathode; the biological anode carbon felt is buried in the gravel layer and the wetland layer; the floating electric Fenton cathode floats on the water surface of the wetland layer; the floating electric Fenton cathode comprises an air diffusion waterproof layer and a heterogeneous Fenton catalytic layer; the floating electric Fenton cathode floats up and down with the liquid surface, has a strong oxygen enrichment function, can cancel the aeration of a traditional Fenton reaction, simultaneously needs no additional iron salt catalyst for efficient catalytic oxidation, and increases the pH range of the Fenton reaction. The application combines the artificial wetland and the bioelectric Fenton system, utilizes the interception of the artificial wetland to easily degradable organic pollutants, provides sufficient electric energy for the electric Fenton process through the bioelectrochemical method, reduces the competition of easily degradable organic matters and PPCPs to hydroxyl radicals in the electric Fenton process, and improves the degradation efficiency of the PPCPs.

The utility model discloses a sewage treatment system for a subsurface flow constructed wetland. The sewage treatment system comprises a water distribution channel, a wetland unit and a water outlet channel which are connected in sequence, the water distribution channel is connected with a wetland water inlet pipe through a first conical filter, the water distribution channel is further connected with a connecting pipe used for being connected with the front water treatment unit, and an emptying opening is formed in the bottom of the water distribution channel; a bottom porous filter plate is arranged between the wetland unit and the water distribution channel, the wetland unit comprises a traditional filler area, wetland plants are planted in the traditional filler area, a porous filter column is further arranged in the traditional filler area, and a functional filler is arranged in the porous filter column; the water outlet channel is connected with a wetland water outlet pipe through a water outlet flow distribution valve, the water outlet flow distribution valve is further connected with a backflow pipe through a second conical filter, and the backflow pipe is used for being connected with the front water treatment unit. According to the utility model, the sewage can directly or indirectly pass through the constructed wetland to realize deep purification of water quality, so that the emission standard is reached, and the economical efficiency and the adaptability are excellent.

This invention provides a photovoltaic-powered microbial fuel cell constructed wetland system, relating to the field of water pollution control. The system consists of a photovoltaic power supply module, a pulse modulation unit, a mode switching unit, a microbial fuel cell constructed wetland body, an auxiliary anode module, and an electrically isolated stimulation electrode pair. Through photovoltaic power supply and low duty cycle intermittent constant current pulse modulation, it can maintain stable operation for more than 72 hours under no-light conditions. Relying on the time-sharing pulse output of the mode switching unit, electrochemical oxidation of recalcitrant organic matter is achieved through the auxiliary anode. The electroisolated electrode pair stimulates the metabolism of electrogenic bacteria with a non-contact alternating electric field, solving the problems of unstable power supply and difficulty in balancing oxidation efficiency and bacterial activity in off-grid scenarios, thus improving wastewater treatment efficiency and long-term operational stability of the system.

The invention discloses a dynamic evaluation method, system and equipment for integrity of a wetland ecosystem and a medium, and particularly relates to the technical field of ecosystem evaluation, and the technical key points are as follows: constructing an integrity evaluation hierarchical structure model of the wetland ecosystem; wherein the wetland ecosystem integrity evaluation hierarchical structure model comprises a target layer, an element layer and an index layer; the target layer is a wetland ecosystem integrity evaluation target; the element layer comprises ecological system integrity evaluation elements related to the dynamic change of the water level; the index layer comprises evaluation indexes used for quantifying the ecological system integrity evaluation elements; obtaining current situation data of each evaluation index of the index layer under different water level scenes, and calculating a standardized quantized value of each evaluation index based on the current situation data; and determining the weight of each evaluation index, and calculating the wetland ecosystem integrity comprehensive index of the target layer based on the standardized quantized value and the weight of each evaluation index.