1377 results about "Treatment pond" patented technology

The invention discloses an ecological seawater rare fish factorization circulating water aquaculture system which comprises an aquaculture pond, a primary filter tower, an albumen segregator, a primary biological filter tower, a secondary biological filter tower, a tertiary biological filter tower, an algae treating pond, a source water filter pond, a UV (Ultraviolet) sterilizer, a temperature adjusting pond, an arc-shaped sieve, a primary sedimentation pond and a secondary sedimentation pond. A bidirectional drainage system is adopted by the aquaculture pond, the water containing less smaller particles at the lower part of the pond and the water containing more larger particles at the bottom of the pond are respectively drained and then input into different processing units for recycle. Molluscs, sea cucumbers and algae are drawn into aquaculture waste, wastewater disposal and resource utilization by the circulating water aquaculture system, so that the circulating water aquaculture system has an obvious ecological characteristic. The ecological seawater rare fish factorization circulating water aquaculture system has the advantages of high treatment efficiency of aquaculture wastewater and rubbish, simpler equipment, low energy consumption, high backwash efficiency, resource utilization of aquaculture wastewater and rubbish, less circulation supplement water, high treatment efficiency of inorganic nutrient salt in the water and high economic additional value.

A sewage treatment system is revealed. Water with contaminants is drawn from sources to the sewage treatment system for automatic and fast water purification. Thus clean drinking water is generated. The water with contaminants is sent to a treatment tank by a motor. Then non-toxic and odorless chemicals are sprayed in the treatment tank. By stirring and mixing of movable blades, the contaminants are coagulated and precipitated into a funnel under the treatment tank to be discharged. Next clean water in the treatment tank is sent to a centrifuge separator to be filtered and dehydrated by centrifugation. Water comes out from the centrifuge separator is drinking water. The sewage is converted into clean water. The system can provide clean safe drinking water to regions without water treatment plants.

The invention provides a river surge silt d harmless and recycling treatment method. In the method, a dredger is utilized to suck silt, the silt is sent into a biochemical treatment pond from the ship through a silt transmission pipeline, compound enzyme is utilized to carry out bioremediation, gravels and sands with the particle size bigger than 1mm are filtered out by a primary hydrocyclone and a vibration screen, sands with the particle size of 0.075-1mm are filtered out by a secondary hydrocyclone and the vibration screen, powdery particles with the particle size of 0.025-0.075mm are filtered out by a third-level hydrocyclone and the vibration screen, powder particles are further separated out from outlet silt tail water through a sediment tower, sewage from the sediment tower is filtered by utilizing a fiber filter after flocculant is added into the sewage, and powdery particles are deposited from backflushing silt after being filtered by utilizing the sediment tower again, and the powdery particles are dehydrated by the third-level hydrocyclone and the vibration screen after entering a sludge pool and are cured by a curing agent after dehydration. The method has high resource utilization ratio, meets the requirements for the environmental protection, particularly carries out stage treatment on the silt, lowers the cost and enhances the efficiency.

The invention discloses a fresh water scale pond ecological breeding system. The system comprises five parts, namely a breeding pond, a pond water normal-position distributed treatment part, a pond discharge water abnormal-position centralized treatment part, a backwater function recovery treatment part and a pond water quality compensation treatment part. Breeding water aquatic ecology, pond breading and an aquaculture engineering technology are integrated organically; and pond microcirculation is formed through absorption, decomposition and nitrification functions of microorganisms, algae and the aquatic plants, particularly continuous removal of aquatic plants with growth and intermittent water supply, so that the utilization rate of pond eutrophic substances is improved, and breeding backwater is restored. The system has the remarkable effects of water saving and emission reduction and provides the high-efficiency pond ecological breeding system which is novel in process and is high in operability and economic and practical and has a unique structure for fishery industrialization and scale production.

A method and system is provided for treating wastewater. In one process, wastewater is directed into a treatment tank and biologically treated. The biologically treated wastewater is directed as mixed liquor from the treatment tank to a bottom portion of a downstream filtration tank having at least one submerged membrane module that extends across substantially the entire cross sectional area of the filtration tank mixed liquor is directed from the bottom of the filtration tank upwardly into the membrane module such that substantially all of the mixed liquor received in the bottom of the filtration tank flows through the membrane module. As the mixed liquor flows vertically through the membrane module, the method includes inducing at least some of the mixed liquor through walls of one or more membrane filters that form a part of the membrane module, producing a permeate stream. The remaining mixed liquor passing through and from the membrane module is referred to as a non-permeate stream and the non-permeate stream, or at least a substantial portion thereof, is recirculated to the treatment tank. The filtration tank is sized relative to the membrane module and the process is carried out such that there is no substantial recycle of mixed liquor in the filtration tank itself. Although mixed liquor may be recirculated from the filtration tank back to the treatment tank and then back to the filtration tank and so forth and so on, once the mixed liquor in the filtration tank makes one pass through the membrane module the mixed liquor is recycled back to the treatment tank and generally not permitted to be recycled back through the membrane module without first returning to the treatment tank.

The invention relates to a method for reusing dyeing raffinate of cellulosic fiber dye, recovering and treating dye, as well as a structure of a special dyeing raffinate treatment pond. According to different dyeing methods and different application categories of dyes, typical basic dyes are selected, and the maximum absorption wavelength or characteristic wavelength of each basic dye is sought so as to determine the content of each blended dye in raffinate and reuse the raffinate in production, while the dyeing raffinate which cannot be directly used in production is recovered through a special treatment pond and a corresponding method. The invention solves the technical problems that the prior art cannot directly reuse the dyeing raffinate in production, cannot recover the dyes in the dyeing raffinate, and has no special treatment device and equipment for recovering and reusing the dyes.

The invention relates to a prawn culture technique, in particular to a closed circulating seawater prawn pond culture system, which sequentially comprises a square or round culture pond, a round or square, corner-rounded vertical flow sedimentation pond, a comprehensive shellfish and algae treatment pond and a constructed mangrove wetland; the area of a single culture pond is 0.4 to 0.6 square meters, the culture pond consists of 2 to 3 prawn ponds, the pond depth is 2 to 2.2 meters, and the water depth is 1.6 to 1.8 meters; a circumferential inner wall (2) of the vertical flow sedimentation pond is inclined upwardly, the upper edge of the vertical flow sedimentation pond is provided with an annular water outlet channel (1) and a water outlet pipe (8), a mud-collecting pit (5) is arranged at the center of the bottom of the vertical flow sedimentation pond, and is connected to the outside of the pond through a mud discharge pipe (4), a central pipe (3) is arranged over the mud-collecting pit (5), and is supported and fixed by a support (6) at the center of the bottom of the vertical flow sedimentation pond, the lower part of the central pipe (3) is provided with a reflective plate (7), and a water inlet pipe (10) connected into the pond is extended into the lower part of the central pipe (3); the vertical flow sedimentation pond is 2.5 to 3 meters deep, and the water depth is 2 to 2.5 meters; the water depth of the comprehensive shellfish and algae treatment pond is 1.6 to 1.8 meters, and filter-feeding shellfish and algae are cultured in the pond by way of hanging; and the hydraulic power of the constructed mangrove wetland stays for 12 to 24 hours. In the culture system has the advantages that the polluting substances produced in the process of prawn culture can be fully and effectively removed, the structure is simple, the removing efficiency is high, the occupied floor area is small, energy can be saved, and emission can be reduced.

The invention relates to a wastewater integrated treatment and comprehensive utilization device and application thereof. A method for the wastewater integrated treatment and comprehensive utilization comprises the following steps: firstly leading the wastewater into an oil interceptor tank and then into an equalizing tank; leading the wastewater after neutralization regulation into a biochemical treatment tank where a sump pump and an aeration device are arranged; leading the wastewater after the biochemical treatment into a sedimentation tank; leading the sedimentated wastewater into a filter tank with built-in filler for the filtration treatment of the wastewater; arranging a back flushing device or filtering material regeneration device beside the filter tank; leading the water outputted from the filter device into an advanced treatment tank to obtain the reclaimed water up to the standards; leading the reclaimed water into a reclaimed water tank where a liquid level controller is arranged for controlling the liquid level; and lifting the rest sludge in the sedimentation tank to a sludge drying compost tank, and carrying out the moderate temperature and high temperature composting of the rest sludge through a temperature controlled heating device. The integrated device is enveloped by an insulating layer formed by polyurethane sandwich boards. The invention provides an integrated device which has the advantages of modularized unit structure, high treatment efficiency, strong self control, wide adaptability, less investment and convenient motion and transportation.

An orbital wastewater treatment system generally including a tank assembly and at least one impeller in the tank assembly for moving mixed liquor under process about the tank assembly is provided with an wastewater inflow sensor, an impeller power meter, and a control unit for periodically and incrementally varying impeller speed and weir height in order to reduce energy consumption. Operating such a wastewater treatment system comprises flowing mixed liquor or wastewater into a treatment pool in the tank assembly, rotating the impeller within the pool to move the mixed liquor or wastewater, and adjusting, in concert, a rate of rotation of the impeller and a level or depth of the pool to reduce a rate of energy usage per unit inflow volume while maintaining at least one process parameter such as dissolved oxygen content substantially constant at a given level in the pool.

The invention discloses a method for advanced treatment of sewage and an artificial wetland structure to solve the technical problems of low denitrification and dephosphorization effect and high capital construction and operating cost of the traditional sewage treatment system. The treatment method comprises the following steps that: sewage is intercepted by a grate, is subjected to hydrolysis acidification, aeration oxygenation and sedimentation, enters the top of artificial wetland, flows through a sand and gravel filler treatment layer, a lime stone treatment layer, a volcanized rock treatment layer, an oyster shell treatment layer, an active carbon treatment layer and a gravel treatment layer, which are arranged in the artificial wetland, from top to bottom in turn, is collected by a bottom pipeline of the artificial wetland and enters a recycling water tank. The internal structure of the artificial wetland is that: a group of sewage inlet pipes are horizontally arranged at the upper end of a treatment tank and are arranged in a filler reinforced treatment layer in the treatment tank, the sand and gravel filler treatment layer is arranged below the filler reinforced treatment layer, and a sewage outlet pipe is arranged at the bottom of the treatment tank. The invention has the advantages that: the treatment effect is good, the sewage recycling standard is met and the operating cost is low.

The invention relates to sewage treatment equipment, which comprises a water inlet pipe (1), a filter tank (2), a treating pond (8) and a water outlet pipe (13), wherein the water inlet pipe (1) is connected to the upper end of the filter tank (2), and the lower end of the filter tank (2) is connected to the treating pond (8) through a connecting pipe (7); the treating pond (8) is connected to the water outlet pipe (13); a working surface layer (3) is arranged on the inner wall of the filter tank (2); from top to bottom, the filter tank (2) is sequentially provided with a coarse filtration layer (4), a fine filtration layer (5) and a deodorization layer (6); and through a partition board (9), the treating pond (8) is sequentially divided into an anaerobic chamber (10), an aerobic chamber (11) and a sterilizing chamber (12). Through the sewage treatment equipment disclosed by the invention, sewage can be treated effectively and conveniently; so that, an effect of sewage treatment is greatly improved.

The invention discloses a method for treating eutrophicated water body by using microalgae, which comprises the following steps of: selecting microalgae capable of efficiently absorbing nitrogen and phosphorus as algae seeds, and performing domestication such as reducing the nitrogen and phosphorus content and adapting to the water body to be treated by regulating culture medium ingredients; and performing amplification culture step by step, introducing the algae seeds into a primary eutrophicated water body treatment tank, making the nitrogen and phosphorus flowing into the water body of theprimary treatment tank greatly absorbed by the microalgae, discharging into a secondary treatment tank for sedimentation and filtration, discharging most of the treated water, flowing back a little water to the primary treatment tank along with the microalgae, and recycling to fulfill the aim of improving the water quality finally. In the method, the defects of high technical investment, high cost, complex technology, secondary pollution and the like in the prior art are overcome. The COD of the eutrophicated water body treated by the method can be reduced by about 95 percent, the BOD can be reduced by about 93 percent, the total nitrogen can be reduced by about 97 percent, the total phosphorus can be reduced by about 97 percent, and the eutrophicated water body treated by the method completely meets the national type III water quality standard.

The invention relates to a method for treating high-concentration industrial organic waste water. In the method, on the basis of a heterogeneous catalysis Fenton oxidizing reaction principle, a catalyst activity phase is a Fe / Al compound oxide; the waste water treatment temperature is 30-80 DEG C, and the pH value is 3-4.5; and hydrogen peroxide is used as a catalyst and optimally added at different time. The invention also relates to a load type Fe / Al compound oxide catalyst for a heterogeneous catalysis Fenton method. The invention can efficiently remove harmful components in high-concentration industrial organic waste water and obviously reduce the COD (chemical oxygen demand) value of the waste water to an acceptable level of a biochemical treatment pond, has simple and convenient operation, economy and practicability, and is suitable for large-scale popularization and application.

A method and apparatus is provided for continuous microbial seeding of waste-laden water directly within septic tanks and similar treatment facilities in order to improve quality of effluent discharge, thereby reducing or eliminating problems commonly associated with such effluent (including, but necessarily limited to, clogging of conventional drain fields). Waste water to be treated flows into a multi-chambered treatment tank. At least one bio-reactor is installed in such tank, and provides for in-situ growth of desired microbial populations within said tank. The present invention allows for demand growth and improved mineralization of wastes both inside the tank, as well as downstream of the treatment tank.

The invention relates to an aquiculture waste water circulating treatment system and belongs to the technical field of culture waste water treatment. The aquiculture waste water circulating treatment system comprises an aquiculture pond array, wherein the aquiculture pond array is sequentially circularly connected with a three-stage stepped sedimentation pond, an alga purification pond, a biological membrane treatment pond, a secondary sedimentation pond, a disinfection pond, a filter pond and an aerobic pond through pipelines; a water body inside the aquiculture pond array circulates through water pumps arranged among the ponds. The aquiculture waste water circulating treatment system disclosed by the invention is simple in structure and reasonable in design, can be used for sequentially treating the aquiculture waste water through the three-stage stepped sedimentation pond, the alga purification pond, the biological membrane treatment pond, the secondary sedimentation pond, the disinfection pond, the filter pond and the aerobic pond, is easy and quick to operate and has good treatment effect; moreover, the water body treated by the system can finally reach the requirement of aquiculture.

A method for cleaning the water in river and lake features that the stream generating and aerating apparatus is arranged in the water of river or lake to generate artificial streams and increase the content of O2 in water for changing the river or lake into a contact-oxidizing aerating pool, and the biological-bed filler is arranged in each stream path to decompose the organic pollutants in water. Said apparatus is composed of turbulence pump, water inlet pipe and outlet pipe with single-pole magnetic rings, and mixing pipe.

The invention relates to an urban road rainwater collection treatment and application system.The urban road rainwater collection treatment and application system comprises a rainwater collection pond (1), a treatment pond (2), a water storage pond (3) and a spraying system (11) which are in fluid communication in sequence.A first filter net (4) and a second filter net (5) are horizontally arranged at the upper portion inside the rainwater collection pond (1) from top to bottom.A third filter net (6), a fourth filter net (7) and a fifth filter net (8) are arranged inside the treatment pond (2) according to the flow direction of fluid.A power component (12) for feeding water in the water storage pond (3) into the spraying system (11) and an adjusting valve (15) are arranged at the lower portion of the water storage pond (3).The urban road rainwater collection treatment and application system has the advantages that no external power system needs to be adopted in rainwater collection and treatment processes, so that the system operation cost is greatly lowered; collected and treated rainwater is sprayed to an urban road with the large traffic flow again, and the certain governance effect is achieved for urban haze.

The invention discloses a radial-flow constructed wetland sludge treatment system and a method thereof. The system comprises a sludge water inlet pipe, a regulating pool and at least one constructed wetland sludge treatment pool, wherein a pool body of the constructed wetland sludge treatment pool is internally provided with a gravel drainage layer for collecting sludge percolate, a filtering layer for purifying the sludge percolate as well as a sand layer for separating mud from water from bottom to top, a mud cake layer made of drying sludge is formed on the sand layer, a sludge layer to be treated is arranged on the mud cake layer, and wetland plants are planed in the pool body. The sludge is fully dried, the volume of the treated sludge can be reduced to 4%-30% of the original volume of the sludge; after anaerobic digestion and aerobic digestion are carried out on organic compounds in the sludge in the constructed wetland, and the content of volatile organic compounds in the sludge is reduced by 20%-30%. The constructed wetland sludge treatment technology has the advantages of remarkable sludge reduction and stabilizing treatment effect, low construction and operation cost, environment friendliness and the like.

The present invention provides a method for treating waste liquid containing organic substances, which can treat waste liquid containing organic substances at high efficiency and high speed, produce not odor during the treatment, and obtain waste liquid containing organic substances that has water quality at least suitable for discharging to sewage system or public water areas; the present invention further provides a waste liquid treatment device, an additive for treatment of waste liquid containing organic substances, and bacteria that can decompose waste liquid containing organic substances. The method and device for treating waste liquid containing organic substances are characterized in: they can force activated sludge containing specific bacteria to contact with the waste liquid containing organic substances. The present invention further provides an additive that can be added to the active sludge in a treatment pond where specific bacteria exist to treat waste liquid containing organic substances, and specific bacteria that can decompose waste liquid containing organic substances.

The invention provides a charging and discharging manipulator for heat treatment, which can solve the problems of uneven quality of heat treatment workpieces, low efficiency, potential safety hazard for workers, high cost and complex structure of the traditional heating furnace and the like in the prior art. The transverse, vertical, lifting and rotary motions of the manipulator are determined according to the relative position of a heating furnace and a heat treatment pond. The charging and discharging manipulator comprises a transverse part, a vertical part making reciprocating motion on the transverse part and a lifting part making up-and-down lifting motion on the vertical part, wherein a fork handle group part is arranged on the lifting part, and a rotation part is also arranged on the vertical part. The workpieces can be heated by adopting a stone chamber furnace, the cost is low and a structure is simple; a fork handle group of the manipulator goes to the deep furnace to move the workpieces out at one time and the workpieces are conveyed to the heat treatment pond with stable operation, energy conservation, environmental protection and high efficiency; and the workpieces are supported full-automatically (or semi-automatically) to make the motion along a transverse direction, a vertical direction and a Z-axis direction and make the rotation around a Z axis, the action is stable and the positioning is accurate.

The invention relates to the technical field of wastewater treatment systems, in particular to a heavy metal wastewater treatment system and method. The system comprises a pH adjustment pond, a coagulation pond, a flocculation pond, a sedimentation pond, a biochemical treatment pond, an ultrafiltration system, a reverse osmosis system and an evaporation-concentration-crystallization device which are communicated in sequence according to the flow direction of wastewater. The reverse osmosis system comprises a first-level RO device and a multi-level RO system which are arranged according to theflow direction of the wastewater, the first-level RO device is provided with a first purification water outlet and a first concentration water outlet, the first purification water outlet is communicated with a recycle pond, and the first concentration water outlet is communicated with the multi-level RO system. According to the heavy metal wastewater treatment system and method, reliable running and economical and reasonable cost are taken as a principle, a double-film-method water treatment technology with ultrafiltration and multi-level reverse osmosis as a core is adopted, the method is reasonable in design and stable in running, the quality of produced water meets the requirement, and all the devices have the advantages of being convenient to install, use, operate and maintain.

The invention provides a process of a multilevel reflux load control biological method and a device matched with the process. The process consists of a pretreatment process, a sludge multilevel load control treatment process and a post-treatment process of air flotation and so on. In the sludge multilevel load control treatment process, wastewater is treated through an integrated biological pond which consists of three sections of nine-level biological treatment ponds, the treatment process in the biological treatment pond comprises the following steps of: contact anaerobic treatments in the first level and the second level; intermediate precipitation in the third level; contact oxidation treatments in the fourth level and the fifth level; intermittent aeration in the sixth level; contact oxidation and addition of basic nutriment in the seventh level and the eighth level; and aeration precipitation in the ninth level. According to the situation of load, sludge in the integrated biological pond can be refluxed into each preceding biological pond so as to control activity, propagation, variation and other biological processes of microorganisms in the integrated biological pond. The integrated biological pond introduces an idea of modular design, and has the advantages of small occupied area, convenient construction, flexible regulation and control and low construction cost.

The invention relates to an urban domestic sewage and garbage integrated and circular type centralized treatment system which comprises an organic garbage collection tank, a grinding device, a water collection tank, a pretreatment tank, an adjusting heating tank, an IC anaerobic reactor, an anaerobic tank, an I-level aerobic reaction tank, an II-level aerobic reaction tank, a sedimentation tank and a membrane treatment apparatus, wherein the IC anaerobic reactor comprises a tank body; the tank body internally consists of a first reaction chamber and a second reaction chamber sequentially connected from bottom to top; a jet-flow aeration stirrer is arranged between the first reaction chamber and the second reaction chamber; a bottom mud discharge pipe is arranged at the bottom of the IC anaerobic reactor; a feed pipe and a stirring turbine are arranged at the bottom in the first reaction chamber; the stirring turbine is arranged above the feed pipe; and an internal circulation backflow pipe and an internal circulation riser pipe are arranged in parallel in the second reaction chamber. The system provided by the invention is suitable for rural areas and small towns and is economical, efficient, energy-saving and simple and easy to implement.

The invention discloses a device for treating waste water by an electron beam irradiation method, which comprises a waste water collecting pool, an irradiation preparing pool, an irradiation treating pool, and a clear water pool which are communicated by water conveying pipes orderly; an electron accelerator is disposed right above the irradiation treating pool; each water conveying pipe is equipped with a water pump; a sinking-mode irradiation flowing water trough is disposed in the center of a pool cover of the irradiation treating pool; uniformly-arranged flowing water trough water inlets are disposed at the bottom surface of the irradiation flowing water trough; waste water to be treated spews upwards and flows into the irradiation flowing water trough from the flowing water trough water inlets; water-distributing pipelines are disposed below the irradiation flowing water trough; flowing water trough water outlets are uniformly arranged at the trough bottom of the irradiation treating pool; the flowing water trough water outlets are communicated with the irradiation treating pool; switch valves are mounted on the flowing water trough water outlets; when the switch valves are open, water treated by the electron beam irradiation method flows into the irradiation treating pool. The invention has high treatment efficiency for industrial organic waste water, can effectively solve the problem of industrial water pollution, has a simple structure, is safe and reliable, and has low treatment cost.

The invention provides a treatment method of anaerobic digested liquid for livestock and poultry breeding pollutants, belonging to the wastewater treatment technology. The treatment method comprises the following steps: after preparing methane by anaerobic digestion of the livestock and poultry breeding pollutants, the residual anaerobic digested liquid enters a low-speed centrifuge for separation after being settled by a pre-sedimentation tank, and the obtained supernatant after centrifugation enters a chemically enhanced primary treatment tank; a flocculant is added to strengthen removal ofphosphorus from the anaerobic digested liquid, the anaerobic digested liquid enters an anoxic-aerobic membrane bioreactor through the primary treatment tank to complete efficient and simultaneous biological removal of an organic matter and nitrogen and phosphorus in an anoxic-aerobic area; after the anaerobic digested liquid is separated by a membrane component in an aerobic area, clear water returns to an anaerobic digestion system of the livestock and poultry breeding pollutants to realize zero emission during the treatment process of the livestock and poultry breeding pollutants; and sludge mixed liquid in the aerobic area returns to an anoxic reactor via a reflux pump for denitrification. The treatment method of the invention provides an idea of sewage zero discharge, water conservation and consumption reduction for the whole anaerobic digestion course of the livestock and poultry breeding pollutants.

The invention discloses a method for producing an insect protein feed by treating excrements of livestock by virtue of Hermetia illucens. The method comprises the following steps: (a) putting same quantity of male and female pupae of Hermetia illucens into a stereo nylon gauze element, immediately putting a material basin and a water basin into the nylon gauze element when feathered adults appear, and putting an ovipositor into the nylon gauze element to collect eggs of Hermetia illucens; (b) after incubating the eggs of Hermetia illucens at the control condition of 23-28 DEG C by using a semi-artificial feed, culturing larvae to three-aged larvae; (c) directly transferring the three-aged larvae into a treating pond filled with the excrements of livestock, and carrying gout excrement treatment; and (d) putting insect collecting buckets on the periphery of the treating pond, collecting and killing old and adult larvae entering the insect collecting buckets, drying, and grinding, so as to obtain the insect protein feed. According to the method, the problem of severe pollution of the excrements of the livestock is solved, meanwhile, the high-quality insect protein feed is provided, and the effective utilization of insect protein in livestock and aquaculture industries is promoted and becomes a way for solving the resource shortage of protein feeds in China.

The invention provides a wastewater biological treatment system based on a bio-contact oxidation process, and belongs to the technical field of wastewater biological treatment. The biological wastewater treatment system includes a processing pool, a water inlet zone, a promote zone, an aeration zone and a slurry and water separation zone; the water inlet zone, the promote zone, the aeration zone and the slurry and water separation zone are integrally arranged in the processing pool, the aeration zone is configured to include a plurality of sub partitions, and a biomembrane filler is placed in each sub partition; two or more of the three of an anoxic zone, an anaerobic zone and an aerobic zone are arbitrarily combined to form the plurality of sub partitions. The biological wastewater treatment system has the advantages of good denitrification effect, high efficiency of sewage treatment, less sludge deposit, wide applicable range, and biological multiplication process.

The invention discloses a penaeus vannamei high-yield cultivation system which comprises greenhouse ponds, a water circulation system and blow-down systems, wherein the blow-down systems are positioned at the bottoms of the greenhouse ponds; the greenhouse ponds comprise a greenhouse breeding pond and a young shrimp breeding pond; the water circulation system comprises a water ecology regulation pond, the greenhouse breeding pond and a wastewater treatment pond; the water ecology regulation pond communicates with the greenhouse breeding pond; the wastewater treatment pond communicates with the blow-down system; the water ecology regulation pond and the wastewater treatment pond are all arranged outside the greenhouse pond; a comprehensive oxygenation system and an automatic cruise feeding machine are further arranged inside the greenhouse pond. The invention further discloses a breeding method for the penaeus vannamei high-yield cultivation system. According to the breeding method, young shrimps of 3.0-4.0cm are adopted as shrimp larvae for breeding. By adopting the penaeus vannamei high-yield cultivation system and the breeding method disclosed by the invention, the breeding rotations can be increased, four rotations of shrimps can be bred, the yield can be high, aquatic products can sold in the market in balance in four seasons, and the market supply can be increased.

The invention discloses a ship for clearing refuse in a river channel and relates to the technical field of shipbuilding. The ship comprises a ship body and a control cabin. A refuse fishing device is arranged on a prow of the ship body. The refuse fishing device comprises a rotary shaft arranged perpendicular to the heading direction of the ship body and fishing grabs arranged on the rotary shaft. Refuse conveyor belts arranged longitudinally are arranged close to the refuse fishing device in the ship body. A refuse treatment operation area is arranged in the middle of the ship body. A refuse treatment pond is arranged on the rear portion of the refuse treatment operation area. A sliding plate is arranged close to the tail ends of the refuse conveyor belts in the refuse treatment operation area. The front portion of the sliding plate is high, and the rear portion of the sliding plate is low. The lowest portion of the sliding plate extends into the refuse treatment pond. By adopting the ship for clearing refuse in the river channel, the problems of low clearing efficiency and unsafety in the process of manually fishing water surface floating refuse at present can be solved.

The invention discloses a device and a method for controlling urban combined sewerage overflow and rainwater runoff pollution and application thereof, and the device comprises a storage adjusting treatment pool (1), a water inlet device (2), a storage adjusting water outlet device (3), a pretreatment water outlet device (4) and a sludge lifting device (5), wherein the water inlet device (2) and the storage adjusting water outlet device (3) are communicated with the storage adjusting treatment pool (1) through a water inlet pipe channel (11) and a storage adjusting water outlet pipe (13) respectively; the inlet of the pretreatment water outlet device (4) is communicated with a water outlet weir (9) of the storage adjusting treatment pool (1); the top end of the sludge lifting device (5) is positioned at the mouth of an overhauling well (8) of the storage adjusting pretreatment pool (1); and the lower end of the sludge lifting device (5) is positioned in a slurry bucket (7) of the storage adjusting treatment pool (1). The invention has the advantages that the promotion of storage adjusting capacity and interception ratio of the urban combined sewerage or rainwater runoff are realized by a single set of system; and compared with the traditional storage adjusting pool, the manufacturing cost is increased by only 10%-30%, and the pollutant interception capacity with the intercepting multiple of n0 equal to 1-3 is increased correspondingly, namely the pollutant interception capacity is increased by more than 50%-100% generally.