35results about How to "Water quality impact" patented technology

The invention discloses an advanced purification method for drinking water and a device thereof. The advanced purification process for drinking water is explored aiming at generally existing micro-polluted source water and the process combines a biological activated carbon filter and an ultrafiltration membrane biological reactor to purify the drinking water in an advanced way. After the raw water being treated enters the biological activated filter first, the particulate matters in the water being partly intercepted; pollutants like organic matters and ammonia nitrogen and so on are partly degraded and the water quality is purified to some degree; load of the ultrafiltration membrane biological reactor is reduced; the water in the filter is discharged into the ultrafiltration membrane biological reactor; the activated sludge in the reactor biologically treats the water from the filter and the pollutants ammonia nitrogen and the organic matters in the water are degraded again; at last, the water after two-level biodegradation is drawn form ultrafiltration membrane component by a draw-suck pump and the remarkable effect of removal of particulate matters as well as interception of two insects, daphnia, red worms, alga, bacteria and even virus of the ultrafiltration membrane can be brought into play.Therefore, the safe and clean drinking water with excellent quality can be prepared.

The invention discloses a living body transportation method of Octopusochellatus seedling breeding and releasing, and relates to the technical field of the living body transportation of the marine product culture. Rice hulls are used as a substrate, the rice hulls are softer, and cannot hurt the Octopusochellatus young seedlings in the shaking process. The rice hulls can be suspended in the seawater so as to form countless enclosed spaces, so the probability of cannibalism of the Octopusochellatus young seedlings is reduced. The use water for raising and transporting the Octopusochellatus young seedlings is the seawater in which suspended particles are removed, and the used seawater for raising and transporting the Octopusochellatus young seedlings is the same as the seawater of the natural spawning site sea area of Octopusochellatus seedling breeding and releasing, so the Octopusochellatus young seedlings can adapt the natural sea area environment as soon as possible, the effect of the environmental change to the survival rate of the Octopusochellatus seedlings is reduced, and the survival rate of the seedlings is improved. The method has the advantages of no anesthetics, no food quality and safety risk, no gradient cooling, no effect to the survival rate of the Octopusochellatus young seedlings, cheap cost, security and environmental protection, and high survival rate of the seedlings.

The invention relates to a foundation pit underground water recharge system. The foundation pit underground water recharge system comprises a pumping well, a recharge well and a processing system arranged between the pumping well and the recharge well for processing water pumped from the pumping well. The processing system comprises a water storage pond, a filter unit, a sterilizing unit, an activated carbon adsorptive filter unit and a recharge pond which successively communicate, wherein the water storage pond is used for storing water pumped from the pumping well, the filter unit is used for filtering water in the water storage pond, the sterilizing unit is used for sterilizing water filtered by the filter unit, the activated carbon adsorptive filter unit is used for filtering the sterilized water and the recharge pond is used for storing water filtered by the activated carbon adsorptive filter unit, and a recharge pump for pumping water in the recharge pond to the recharge pump isarranged in the recharge pond. When the pumped water is injected into underground water, the water is processed, so that the water quality of the injected underground water is better than the water quality of the underground water; when the water is injected into the underground water, the water quality of the underground water is unlikely to be polluted.

The invention relates to an in situ measuring apparatus and method for components and concentration of pollutants released by sediment in a water body. The apparatus comprises a watertight water pipe, wherein the lower end of the watertight water pipe is inserted into the sediment of a measured water body, the top end of the watertight water pipe is higher than the water surface of the water body, water in the watertight water pipe is discharged out of the pipe through a drainage apparatus, and a solving liquid for dissolving out pollutants in the sediment is injected into the watertight water pipe without water. The method can be carried out in a condition that the sediment of the water body is not collected, the solving liquid is collected and the components and concentration of the pollutants in the solving liquid are measured, so that a goal of knowing the contamination of the sediment to an overlaying water body is achieved.

The invention discloses a light-proof packaging method for drinking water and a light-proof outer packing for drinking water. Reflective material is applied on the outer surface of a drinking water packaging container, or the drinking water packaging container is wrapped or covered with a light shield with a light-proof effect, so that drinking water filled in the drinking water packaging container is free from influence of light rays, so as to ensure the contents of trace elements and mineral matters in the drinking water, ensure the nutrition and health of drinking water and prolong the quality guarantee period of drinking water. According to the invention, the breeding speed of microbe in the drinking water can be lowered, the quality guarantee period can be prolonged, and the product is damp-proof, beautiful, convenient to use, simple to manufacture and low in manufacturing cost, can be popularized and applied to wine, drinks, dairy products, medicine and other articles which need to be stored in a lucifugal or light-proof manner, and has a wide application range.

The invention discloses an advanced purification method for drinking water and a device thereof. The advanced purification process for drinking water is explored aiming at generally existing micro-polluted source water and the process combines a biological activated carbon filter and an ultrafiltration membrane biological reactor to purify the drinking water in an advanced way. After the raw water being treated enters the biological activated filter first, the particulate matters in the water being partly intercepted; pollutants like organic matters and ammonia nitrogen and so on are partly degraded and the water quality is purified to some degree; load of the ultrafiltration membrane biological reactor is reduced; the water in the filter is discharged into the ultrafiltration membrane biological reactor; the activated sludge in the reactor biologically treats the water from the filter and the pollutants ammonia nitrogen and the organic matters in the water are degraded again; at last, the water after two-level biodegradation is drawn form ultrafiltration membrane component by a draw-suck pump and the remarkable effect of removal of particulate matters as well as interception of two insects, daphnia, red worms, alga, bacteria and even virus of the ultrafiltration membrane can be brought into play.Therefore, the safe and clean drinking water with excellent quality can be prepared.

The invention relates to a method for treating a garbage leachate based on multidimensional strong oxidization and circular biochemical treatment, belonging to the technical field of sewage treatment. The method comprises the following steps: the garbage leachate is collected and injected into a regulating tank, water quantity regulation and water quality regulation are performed, the regulated garbage leachate is injected into a multidimensional strong oxidization facility, organic matters are directly degraded by using electrodes, and heavy metal ions are adsorbed and collected in the meanwhile, so that the growing environment of the putrefying bacteria flora is destroyed, thereby eliminating the putrefying bacteria and other florae with poor activities, providing a stable water quality environment for subsequent treatment, and avoiding the uncertainty of the treatment result; after flocculent precipitation is performed, the heavy metal ions and killed florae are separated and removed along with the flocculent precipitate, and residual organic matters in the water are consumed by the metabolism of anaerobic bacteria in an anaerobic pond, thereby improving the environment for the subsequent circular biochemical treatment; in the four-stage circular biochemical treatment, aerobic bacteria under aeration conditions are utilized to eliminate organic pollutants in the water; the wastewater subjected to biochemical treatment are subjected to flocculent precipitation by chemical agent addition; and finally, filtration is performed to form the harmless treated water.

In an activated sludge treatment of organic waste water, excess sludge from the activated sludge aeration vessel is processed with hypochlorous acid in place of ozone without set up of aeration vessels and blowers to improve volume reduction cost of sludge without deterioration of water quality. The hypochlorous acid process is carried out by using an acidulous sodium hypochlorite aqueous solution which is prepared by mixing sodium hypochlorite aqueous solution with a dilute hydrochloric acid and diluting the resulting mixture with water of available chlorine concentration at a pH zone of more than 4 to less than 7.

The invention discloses a demolishing construction method for a hanging basket of a single cable plane cable-stayed bridge. The demolishing construction method for the hanging basket of the single cable plane cable-stayed bridge comprises the following steps of (1) refitting the hanging basket; (2) moving the refitted hanging basket back to a planning position; and (3) demolishing the hanging basket. According to the technical schemes, on the basis of not changing the fact that an existing prestressed concrete continuous girder bridge mainly adopts hanging basket cantilever construction and under the condition of guaranteeing the water quality of the south-to-north water diversion project, a hanging basket truss, a suspension system and a walking system are refitted, so that the hanging basket is returned to the south-to-north water diversion river for demolishing; during single cable plane cable-stayed bridge construction on a across south-to-north water diversion truck canal by utilizing the demolishing construction method for the hanging basket of the single cable plane cable-stayed bridge, the hanging basket can be moved out of the truck canal for demolishing safely, rapidly and effectively, no sundries and impurities are fallen into the south-to-north water diversion river during the construction process, and the south-to-north water diversion water quality is not affected, and related state requirements for construction of a south-to-north water diversion bridge is met.

The invention relates to a foundation pit underground water recharge system. The foundation pit underground water recharge system comprises a pumping well, a recharge well and a processing system arranged between the pumping well and the recharge well for processing water pumped from the pumping well. The processing system comprises a water storage pond, a filter unit, a sterilizing unit, an activated carbon adsorptive filter unit and a recharge pond which successively communicate, wherein the water storage pond is used for storing water pumped from the pumping well, the filter unit is used for filtering water in the water storage pond, the sterilizing unit is used for sterilizing water filtered by the filter unit, the activated carbon adsorptive filter unit is used for filtering the sterilized water and the recharge pond is used for storing water filtered by the activated carbon adsorptive filter unit, and a recharge pump for pumping water in the recharge pond to the recharge pump isarranged in the recharge pond. When the pumped water is injected into underground water, the water is processed, so that the water quality of the injected underground water is better than the water quality of the underground water; when the water is injected into the underground water, the water quality of the underground water is unlikely to be polluted.

The invention relates to a termite pheromone attractant and a termite trap-killing agent using the attractant, and belongs to the technical field of termite trap-killing agents. The termite pheromone attractant comprises the following components: hydroquinone, arbutin, oleic acid, glucose, cyclohexanhexol, mannose, 2,6-di-tert-butyl paracresol, amino acid, a biological active enzyme, salt, codlemone, gloeophyllum trabeum, ethanol, 2-phenoxyethanol, n-hexane, dismutase, poria cocos, coriolus versicolor, tall gastrodia tuber, edible fungus, lucid ganoderma, bee honey, maltose, fermented sugarcane powder, fermented straws and acetone. The termite pheromone attractant disclosed by the invention synchronously has the functions of a termite phagostimulating pheromone and a termite trace pheromone by adding a chemical pheromone into a termite trap-killing agent, and can be used for significantly increasing the eating amount of termites on the trap-killing agent and improving the trap-killing effects of the termite trap-killing agent; and meanwhile, the termite pheromone attractant has extreme sensitivity and high specificity.

The invention discloses a photothermal conversion device with the temperature control property and the heat preservation property. The photothermal conversion device comprises a shock absorption supporting frame, a solar panel, a fastening rod, a vacuum tube and an anti-high temperature sunshade umbrella. A water storage tank is arranged at the upper end of the shock absorption supporting frame, aprotective shell is arranged on the outer side of the water storage tank, and an exhaust hole and a water inlet hole are formed in the right side surface of the water storage tank. A replenishment water tank is arranged on the right side of the shock absorption supporting frame, the anti-high temperature sunshade umbrella is installed above the water storage tank, and a foot pad is arranged at the lower end of the shock absorption supporting frame. According to the photothermal conversion device with the temperature control property and the heat preservation property, a waterproof cover can protect a thermometer, when the thermometer detects that the temperature reaches a certain degree, information can be transmitted to a central module, at the same time, the central module can control folding or contraction of the anti-high temperature sunshade umbrella, and at the same time, the anti-high temperature sunshade umbrella can directly cut off the direct contact between the water storage tank and the sun, and a heat absorbing plate stops absorbing heat at the moment.

The invention discloses a bio-augmentation treatment sludge in-situ reduction method, which is characterized in that: on the basis of a traditional active sludge biochemical treatment system, functional microbial inoculum is additionally added to enhance organic matter degradation and a metazoan is additionally added to enhance predation so as to optimize a biotic community structure, so the sludge in-situ reduction can be realized during the sewage treatment process, and the sludge reduction effect can reach 60 percent to 100 percent. The functional microbial inoculum is a mixed flora which is specially used for the sludge reduction and is obtained through directed selection domestication culture and comprises five types of special bacterial strain selected from soil and active sludge. The metazoan is a vermes-typed micro metazoan which is selected in a laboratory and is used for the bio-augmentation predation of an active sludge system through the propagation. Through the bio-augmentation treatment method, the sludge in-situ reduction can be realized under the situation that the normal running of a sewage plant is not influenced, and the method has the characteristics of less investment, low running expense, fast action, stable running and the like. The method has general adaptability to ordinary sewage biochemical treatment systems.

The invention discloses a full penetration type bituminous pavement system capable of effectively controlling road rainwater runoff pollution. The problems that an existing full penetration type bituminous pavement has poor system consideration and can only enable water to permeate and be drained after construction, theoretical advantages cannot be exerted, and road greening irrigation and road surface cleaning use plenty of water are solved. The pavement system utilizes a runoff storage module, a runoff utilization module and a water quality monitoring module, which are matched with the fullpenetration type bituminous pavement structure, to solve the problem of local absorption of pavement rainwater runoff during rainfall on the premise of ensuring that the road traffic function is not affected. At the same time, the real-time monitoring of a regular index of reclaimed runoff water quality is achieved, the system operation and a maintenance scheme are easy to adjust flexibly, water quality of sprinkling irrigation and road cleaning is further ensured, pollution of road rainwater runoff is alleviated, and water use problems of urban road greenbelt irrigation and road cleaning areeffectively solved.

The invention relates to a power plant waste water evaporation treatment method and treatment system thereof, which comprises a waste water evaporator, a condenser and a heat transfer medium heater, wherein one part of water vapor coming out of the waste water evaporator is sent to the condenser to be condensed into water, and the other part of the water vapor is collected and sent to the heat transfer medium heater to be heated up and then returned to the waste water evaporator to heat and evaporate waste water; the heat source of the heat transfer medium heater is from steam turbine main steam or high-temperature steam pumped out of a heat return system; the cold source of the condenser is from condensed water of a steam turbine condensed water system with lower temperature.A part of high-temperature steam is led out from a steam turbineextraction system or the main steam to heat the heat transfer medium, and condensed water formed after the heat is released is sent back to the condensed water system or a hydrophobic system of the steam turbine.A part of low-temperature condensed water is led out from the condensed water system of the steam turbine by using a circulating coolingwater pump, and the low-temperature condensed water is completely returned to the condensed water system of the steam turbine after heat exchange. The heat loss is very small in the whole process, andthe heat loss does not affect a thermal system of the steam turbine.

The invention belongs to the technical field of heat treatment and equipment, and relates to a heating device, in particular to a vertical wall-mounted non-water-tank solar water heater. According tothe vertical wall-mounted non-water-tank solar water heater, an outer shell of the vertical wall-mounted non-water-tank solar water heater is in a hollow cuboid with one opening surface. A buffering layer covers the outer shell. A toughened glass plate is located on the opening surface of the outer shell, and a cavity structure is formed. A glass cavity is of a whole glass structure, is located inthe cavity structure, and includes a vacuum cavity, a vacuum glass endothermic cavity, a heat conduction liquid cavity and a water storage cavity which are each of a cavity structure. The glass cavity further comprises a blue film coating sprayed and coated in the vacuum glass endothermic cavity. The vacuum glass endothermic cavity is adjacent to the toughened glass plate. A water inlet and a water outlet penetrate from the outer shell into the water storage cavity. By means of the vertical wall-mounted non-water-tank solar water heater, vertical installation can be achieved, the water storage capacity is high, an additional water tank is not needed, installation is more convenient and efficient, the glass structure is low in cost and easy to machine, the thermal efficiency is high, the service life is long, the inner part structure is stable, the water outlet quality is high, and low-level installation can be achieved.

The invention relates to a pool brushing method for aquatic seedling and aquaculture, which is characterized in that before a pool is brushed, the volume of water for brushing the pool is determined according to the size of the pool, and then water solution which contains 0.2 to 0.5 gram of Vitamin C for industrial use per litre is prepared; a brush for brushing the pool is dipped into the Vitamin C water solution to wash and brush the dirty pool bottom and wall which are finally washed clean with filtered clean seawater. Compared with dilute hydrochloric acid, the Vitamin C water solution has good effect when being used for brushing the pool, has simple operation, little pool damage and no toxic or side effects, as well as no influence over the health of operators or no environmental pollution; meanwhile, the seedling and aquaculture pool can also be disinfected and sterilized; therefore, the invention can greatly reduce the hazard to the seedling pool or the aquaculture pool because of using dilute hydrochloric acid for brushing the pool and also prevent the residual dilute acid from causing the water quality of seedling to become acid and influencing the water quality of seedling and aquaculture during dilute hydrochloric acid pool brushing, with the advantages of environmental protection and low price.

The invention discloses an under-forest fish culture method. The method includes the steps of firstly, reforming a mountain forest, to be more specific, planting tree seedlings in rows, arranging ditches in two sides of the tree seedlings in rows and around the forest, laying sludge layers in the ditches in two sides of the tree seedlings, laying cement in the ditches around the forest, and planting shade-loving plants in the sludge layers; secondly, using a Chinese herbal medicine sterilizing agent to sterilize the ditches; thirdly, performing feeding management, to be more specific, A, adding water into the sterilized ditches, monitoring water content in real time, and controlling the water depth of the ditches among the tree seedlings to be larger than 0.3m; B, allowing the fish fry density of the ditches to be 1-5 / m<2>; C, evenly adding paper pulp into the ditches to serve as feed. The under-forest fish culture method has the advantages that the ditches provides moisture and fertility needed by the growth of the tree seedlings, fish eats grass and various microorganisms, mutual benefits between the tree seedlings and the fish are achieved, and good economic benefits are achieved.

The invention discloses a chemical industry park water quality monitoring sampling device which comprises sampling mechanisms for sampling water quality of sampling points and a collecting mechanism for collecting water quality samples of the sampling points. The sampling mechanisms and the collecting mechanism are connected through pipelines, the sampling mechanisms and the sampling points are in one-to-one correspondence, the collecting mechanisms and detecting mechanisms are in one-to-one correspondence, the pipeline comprises a first branch pipeline, a main pipeline and a second branch pipeline, one end of the first branch pipeline is connected with the sampling mechanism, the other end of the first branch pipeline is connected with the inlet end of the main pipeline, and one end of the second branch pipeline is connected with the outlet end of the main pipeline; the other end of the second branch pipeline is connected with a collecting mechanism, a water pump is arranged on the main pipeline, first electromagnetic valves are arranged on the first branch pipeline and the second branch pipeline, and the first electromagnetic valves and the water pump are connected with a controller through wires, so that timing sampling of different sampling points is realized, the automation degree is high, the labor intensity is reduced, the sampling time interval is fixed, and the sampling precision is high.

The invention relates to a seawater purification system for a shellfish keep-alive transport vehicle. A particulate filter comprises an inner passage and an outer passage, and the inner passage is located in the outer passage; a water inlet is formed in the upper end of the inner passage, a water outlet is formed in the lower end of the inner passage, and a solenoid valve is arranged at the water outlet; the side wall of the inner passage is a filtering wall, and a flush valve is arranged in the filtering wall and is controlled by a flush valve driving motor to be opened and closed; the outer passage is provided with a purified water outlet from which granular impurities are filtered away; the purified water outlet is communicated with a water inlet of a soluble organic matter filter by a connecting pipeline and provided with water delivery power by a driving pump; a vertical passage is arranged outside the soluble organic matter filter, an axial-flow fan is arranged at the top of the vertical passage, a tapered water accummulation board is arranged at the bottom of the vertical passage, and a water purifier water outlet is formed in the center of the water accummulation board; a plurality of foam absorption balls are arranged above the water accummulation board and connected with an external extraction device by an extraction hole on the vertical passage; air intake holes are formed in the side surface of the lower part of the vertical passage, a fine-pored flat plate is arranged above the air intake holes, and porous ceramic and quartz sand mixed layers are placed above the fine-pored flat plate.

The pollution-free water feeder comprises a fixed base and a controller, a rotating rod is installed on the inner wall of one side of the fixed base through a bearing, a pedal is fixedly connected to the side wall of the rotating rod, and a water containing basin and a pressure sensor are installed on the outer wall of the top of the fixed base; a water tank is fixedly installed on the outer wall of the top of the fixed base through a connecting plate, the controller is located on the outer wall of one side of the water tank, a water conveying pipe is fixedly connected to the outer wall of the bottom of the water tank, and the end, away from the water tank, of the water conveying pipe is connected with a water containing basin; by arranging a pedal, a water containing basin, a pressure sensor, a water tank, a water conveying pipe, a first electromagnetic valve and a filter screen, the situation that when poultry do not drink water, water makes contact with and is mixed with substances in air to cause qualitative change can be avoided, the cleanliness of water can be improved, and therefore the influence on growth of chickens and ducks is avoided.

The invention provides a new technology for preparing converter slag-regulating reagent by light-burning dolomite powder ash, which comprises the following steps of: carrying out particle size sieving on calcined dolomite; directly sending light-burning dolomite blocks of which the diameter is more than 5mm into a steel mill to be used; sieving the light-burning dolomite blocks of which the diameter is less than 5mm to a certain degree; crushing the light-burning dolomite blocks of which the diameter is more than 3mm to ensure that the particle size of the light-burning dolomite is less than 3mm; blending and adding certain binding agent and water into the light-burning dolomite powder ash of which the particle size is less than 3mm; pelletizing in a disc balling machine to obtain a light-burning dolomite pellet of which the particle size is more than 15mm; and after the pellet is conserved to meet a converter slag-regulating reagent requirement, sending the pellet to the steel mill to replace the light-burning dolomite block for use. According to the new technology disclosed by the invention, the light-burning dolomite powder ash is pelletized by adding a certain quantity of bonding agent and a proper quantity of water, and the technology is simple. In addition, due to the fact that the iron and steel enterprise has an abundant pellet production experience, the new technology is favorable for the high-value utilization of the light-burning dolomite powder ash, and has important meanings on energy saving, emission reduction and resource utilization of the iron and steel industry.

A power plant wastewater evaporation treatment method and its treatment system, including a wastewater evaporator, a condenser and a heat transfer medium heater, part of the water vapor from the wastewater evaporator is sent to the condenser to condense into water, and the other part of the water vapor is collected After being heated by the heat transfer medium heater, it returns to the waste water evaporator to heat and evaporate the waste water; the heat source of the heat transfer medium heater comes from the main steam of the steam turbine or the high-temperature steam extracted from the heat recovery system; the cold source of the condenser Condensate from the steam turbine condensate system at a lower temperature. A part of high-temperature steam is drawn from the steam turbine extraction system or main steam to heat the heat transfer medium, and the condensed water formed after releasing heat is sent back to the steam turbine condensed water system or drainage system. A part of the low-temperature condensed water is drawn from the condensed water system of the steam turbine with a circulating cooling water pump, and all of it returns to the condensed water system of the steam turbine after heat exchange. During the whole process, the loss of heat is very small and will not have any impact on the thermal system of the steam turbine.

The invention discloses a static water heating system with vertical pipes, and belongs to the field of heat exchange. The static water heating system with the vertical pipes comprises a heat source system, a domestic water flow pipeline, a second branch and a heat exchange device. The domestic water flow pipeline is provided with a domestic water inlet end and a plurality of domestic water use ends, a water inlet end and a water return end of the second branch are communicated with the domestic water flow pipeline, the pressure difference between two connection points of the water inlet end ofthe second branch, the water return end of the second branch and the domestic water flow pipeline is zero, the heat source system and the second branch are connected with each other by the heat exchange device for heat exchange, and the heat exchange device is positioned below the domestic water flow pipeline. The static water heating system has the advantages that domestic water can be instantlyheated by the static water heating system, circulating pumps or water tanks can be omitted, accordingly, energy can be saved, and environments can be protected.

The invention relates to the technical field of pollution control of water environments. Aiming at the problem that sewage at sewage discharge outlets of the periphery of a landscape lake easily affects the water quality of the landscape lake, the invention provides a sewage treatment system for the sewage discharge outlets of the landscape lake. The sewage treatment system is characterized by comprising a planting region surrounding each sewage discharge outlet, wherein the planting region is used for planting aquatic plants; the distance between each planting region and each sewage dischargeoutlet is 3 to 20 m; and the width of each planting region is 1 to 8 m. The planting regions are arranged in water inlet positions of the sewage discharge outlets of the landscape lake in a way of surrounding the sewage discharge outlets; the aquatic plants are planted in the planting regions; the roots of the aquatic plants can easily absorb bottom mud and organic substances in the sewage, and the bottom mud and the organic substances are used as nutrient substances; oxygen gas is released, so that organic matters in water is subjected to a chemical reaction with the oxygen gas, and thus, the organic substances in water can be decomposed, and carbon, nitrogen, phosphorus and the like in the sewage can be fixed onto rhizomes of the aquatic plants; and the content of ammonia nitrogen and the phosphorus in the sewage can be favorably reduced, so that water discharged into the landscape lake from the sewage discharge outlets cannot easily affect the water quality of the landscape lake.

The invention relates to the technical field of water treatment, and particular provides a wastewater treatment system and a wastewater treatment process. The wastewater treatment system includes: anoptional homogenization pond, an oxidation pond, an integrated pretreatment pond, an artificial wetland unit and an ecological treatment unit connected in sequence; and the ecological treatment unit includes an ecological floating island. According to the wastewater treatment system, an organic matter which is difficult to biochemically degrade in wastewater can be effectively degraded, the nitrogen and phosphorus content is effectively reduced, effluent water quality can at least meet the Class IV standard of the "surface water environmental quality standard", and effluent water can be directly discharged into a river without causing bad influences on water quality of the river.

The invention discloses a pond fish water tank type intensive recirculating aquaculture mode and relates to the technical field of aquaculture. According to the pond fish water tank type intensive recirculating aquaculture mode, a plurality of independent aquaculture water tanks arranged in parallel are formed in an aquaculture pond, the front side face and the back side face of each aquaculture water tank are walls with the thickness of 30 cm and the height of 2-3 m, double-layer fish barring nets are installed at both the left end and the right end of each aquaculture water tank, micropore oxygen-increasing equipment is arranged at the water inlet end of each aquaculture water tank, and a low wall with the height of 30 cm is arranged at the water outlet end of each aquaculture water tank; impeller type oxygen-increasing machines are installed in the aquaculture pond in the density of one machine per 2 mu, and a water-retaining wall is arranged in the middle of the aquaculture pond. By means of the pond fish water tank type intensive recirculating aquaculture mode, the aquaculture yield can be improved by 30%-50%, the bait utilization rate is improved, the occurrence of fish diseases is reduced, the survival rate is improved, the medicine cost is reduced, the pond can also be prevented from aging, and the pond cleaning cost is reduced.