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228results about How to "Improve water quality" patented technology

Ultrafiltration membrane coagulation /adsorption/bioreactor integrating advanced water treatment method and device

The invention discloses an integrated advanced water treatment method by ultrafiltration membrane coagulation/ adsorption/biological reactor and a device thereof. In the invention,, in which the coagulation, the adsorption and biological reaction is combined and completed in a same reaction cell. Raw water enters the ultrafiltration membrane coagulation/ adsorption/biological reactor; activated sludge microorganism in the reactor biologically degrades ammonia nitrogen and organic matters with low molecular weight in the water; a coagulant-adsorbent adding system adds coagulant and adsorbent in the reactor to remove the organic matters with medium and high molecular weight and phosphorus; at last, the immersion ultrafiltration membrane components arranged in the reactor carries out the solid-liquid separation to prepare drinking water with excellent quality.A perforated aeration pipe is arranged on the lower part of the reacted to be connected with a sludge discharge pip to discharge the residual sludge in the reactor regularly. In order to ensure the membrane flux, a membrane reverse washing system carries out the reverse washing for the ultrafiltration membrane components regularly.The invention combines the coagulation effect, the absorption effect as well as the biological effect and ultrafiltration physical interception effect together so that the manufacturing cost and operation cost are remarkably reduced, while the invention is a novel process with the advantages of high efficiency, energy saving, convenient maintenance and management of advanced purification of the drinking water.
Owner:HARBIN INST OF TECH

A high efficiency water body bottom material modifier

The invention relates to a high efficiency water body bottom material modifier, which is prepared by processing potassium peroxymonosulfate complex, urea hydrogen peroxide, ion chelating agent and carrier; and each component has the mass percent of: 0.5%-50% potassium peroxymonosulfate complex, 0.5%-50% urea hydrogen peroxide, 0.5%-10% ion chelating agent and 5%-50% carrier and each component prepares into tablet, round particle, anomal particle or pulvis finished product by processing. The composition of the invention can efficiently process aquaculture pond, lake, landscape water, swimming pool and other bottom environments in order to reach stable and lasting water quality improvement purpose. The potassium peroxymonosulfate complex in the composition can oxidize bottom oxygen consuming organic matter to prevent from acidifying and smelliness; the urea hydrogen peroxide can increase water body bottom dissolved oxygen and reduce water body soil bottom oxygen debt; the ion chelating agent can exchange copper, zinc, iron and other heavy metals in the adsorbed water body to reduce the toxicity to aquatic animals; the above three compounds after processing into the finished products can directly put into the water bottom to have significant integral improvement effect on water body bottom and be especially suitable for water body cultivation.
Owner:湖北紫荆生物技术有限公司

Integrated water purification processing method and device of ultrafiltration membrane coagulation/bioreactor

InactiveCN101219847AImprove water qualityReduce engineering cost and operating costUltrafiltrationMultistage water/sewage treatmentUltrafiltrationChemistry
The invention discloses an integrated water treatment method of ultrafiltration membrane coagulation/ biological reactor and a device thereof. The invention, the coagulation, and the biological reaction is combined and completed in a same reaction cell. Raw water enters the ultrafiltration membrane coagulation/ biological reactor; activated sludge microorganism in the reactor biologically degrades ammonia nitrogen and organic matters with low molecular weight in the water; a coagulant adding system adds coagulant and adsorbent in the reactor to remove the organic matters with high molecular weight and phosphorus; at last, the immersion ultrafiltration membrane components arranged in the reactor carries out the solid-liquid separation to prepare drinking water with excellent quality. A perforated aeration pipe is arranged on the lower part of the reactor to be connected with a sludge discharge pip to discharge the residual sludge in the reactor regularly. In order to ensure the membrane flux, a membrane reverse washing system carries out the reverse washing for the ultrafiltration membrane components regularly. The invention combines the coagulation effect and the biological effect with the ultrafiltration physical interception effect so that the manufacturing cost and the operation cost are remarkably reduced, while the invention is a novel advanced purification process of the drinking water with the advantages of high efficiency, energy saving, convenient maintenance and management.
Owner:HARBIN INST OF TECH

Process method for recycling precious metal from electroplating wastewater

The invention relates to a process method for recycling precious metal from electroplating wastewater. Wastewater is placed into a collecting basin, then a hoisting device is utilized to hoist the wastewater to the next process, and the process method is characterized by also including the following steps: electroplating wastewater pre-treatment, namely the electroplating wastewater sequentially passes through a quartz sand filter, an active carbon filter and a filter element type filter to remove impurities, and filtration is subject to the next process; membrane concentration, namely the filtration obtained in the previous step is added into a membrane bioreactor for carry out step by step concentration separation, permeate is collected to a permeate water tank and is used as water for poaching in electroplating production line; concentrated solution enters into a concentrated solution water tank and is recycled in a plating tank, or electrolysis is carried out to recycle nickel. The invention has the advantages that: sewage discharge of the traditional electroplating industry can be reduced, harmful heavy metal in wastewater can be recycled, thus reducing environmental pollution; and water treatment is low in cost, and economic benefit is considerable.
Owner:NANTONG SHENHAI SCI & IND TECHCO

Underwater aerating device based on river power decontamination

The invention discloses an underwater aerating device based on river power decontamination, which comprises an air cylinder and a floating drum. A piston is installed in the air cylinder; a main shaft and a gear train transmission system are installed in the floating drum; a water flow driving device is connected with the part of the main shaft, which extends out off the floating drum; the water flow driving device is used for driving the main shaft to rotate when water flow flows; the main shaft is connected with the gear train transmission system; the gear train transmission system is connected with the piston through a crankshaft connecting rod transmission system and drives the piston to do front-and-rear reciprocating motion; air inlets and air outlets are respectively formed at front and rear ends of the air cylinder; one-way valves in corresponding directions are respectively installed on the air inlets and the air outlets; each air inlet communicates with the atmosphere; each air outlet is connected with an exhaust pipe; and an aerator is connected with the other end of the exhaust pipe. The underwater aerating device adopts river power to perform aeration on the water body, does not need to consume external electric energy, and can effectively save energy and reduce noise.
Owner:XIAN UNIV OF TECH

Sewage treatment system and sewage treatment method

InactiveCN101798143AStrengthen ecological restoration functionImprove water qualityClimate change adaptationSustainable biological treatmentAnguilliformesZizania latifolia
The invention belongs to the field of sewage treatment, and discloses a sewage purification system. The sewage purification system comprises a watercourse, wherein the watercourse is at least 1000 meters long, at least 3 meters wide and 1-4 meters deep. An emerging plant area, a water-planted commercial crop area and a submerged plant area are planted along the watercourse in the flow direction of the sewage, wherein the emerging plant can be cane shoot or lotus root; the water-planted commercial crop can be water-planted cress, leaf lettuce, lettuce, water convolvulus, ryegrass or the like in spring and summer, or water-planted green vegetable, shallot or the like in autumn and winter; the sunken plant can be waterweed, Potamogeton crispus L or eel grass; and at least 100kg of spiral shells and at least 100kg of freshwater mussels are stocked in the watercourse. By planting the emerging plant area, the water-planted commercial crop area and the submerged plant area in the watercourse of the sewage treatment system and simultaneously stocking the spiral shells and the freshwater mussel filter-feeding benthic species, the invention intensifies the wetland ecosystem restoration function, can effectively improve the water quality, is especially applicable to the purification of rural domestic sewage, and can be used as the matching technology for new countryside construction.
Owner:苏州市阳澄湖现代农业发展有限公司

Microbial particle preparation for aquacultural water quality purification and preparation method

Disclosed are a microbial particle preparation for aquacultural water quality purification and a preparation method. The preparation is characterized by including utilizing zeolite as a core after steps of activation of bacillus subtilis by strains, seed liquid preparation, fermenting culturing, concentrating and the like, and then wrapping the bacillus subtilis outside the zeolite by a bacterium absorption medium to prepare gray white irregular particles with a structure of an inner layer and an outer layer. The microbial particle preparation is low in production cost, easy to store and transport and widely applicable to water quality purification of fresh water and sea water and contains more than or equal to 2X1010/g of live bacterium counts. The microbial particle preparation can be quickly sunk to water bottom after being thrown into water, the bacillus subtilises can be massively bred in water and function in water purification together with the zeolite, organic substances such as residual baits and corrosive substances can be disintegrated quickly, and water quality can be further purified by means of nitrate and nitrite in the water, diseases of bred animals can be reduced while quality and output can be improved. Further, the microbial particle preparation is simple to prepare, low in cost, stable in preparation method and convenient to produce industrially, can be stored at room temperature without refrigerating and has excellent social benefits and economic benefits.
Owner:OCEAN UNIV OF CHINA +1

Method for treating waste water from citric acid-production

The invention discloses a method for treating waste water from citric acid-production, which belongs to the technical field of waste water treatment and particularly relates to a method for treating waste water from citric acid-production, which is simple in operation and good in treatment effect and ensures the effluent can be discharged out directly. The invention adopts a technical scheme that:the method adopts a two-phase anaerobic and aerobic combined process that waste water generated in production process enters a settling and adjusting tank and floataion tank from a gird tank to remove suspended matters, colloid matters and other pollutants from water; before entering a two-phase anaerobic reactor, sewage is diluted by clean water in a ratio of 1:1 and then quantitatively pumped into the two-phase anaerobic reactor to decompose and transform various complex organic matters in the waste water into micromolecular organic matters, methanes, carbon dioxides and other materials; nitrified waste water enters a delayed aeration tank to interact with aerobe in the sludge to remove residual organic matters; and part of suspended matters brought out by water settle in inclined-tubesedimentation tank and then the waste water reaching standards is discharged.
Owner:唐晓明

Method for breading shrimp postlarvae by biomanipulation

InactiveCN101828535AReduce ammonia nitrogen and nitrite nitrogenImprove water qualityClimate change adaptationPisciculture and aquariaPathogenDisease
The invention discloses a method for breading shrimp postlarvae by biomanipulation. The method comprises the following steps of: selecting the parent shrimp without virus WSSV and TSV, and feeding the parent shrimp with bait without virus WSSV and TSV, wherein the feeding amount per day is 4 to 6 percent of the weight and the parent shrimp is fed for four times; breading the parent shrimp under the conditions that the water temperature is between 26 and 30 DEG C, the salinity is 2.8 to 3.2 percent and the illumination intensity is 100 to 1,000 lx to make the parent shrimp reach sexual maturity; after mating, putting the female shrimp into a spawning pond to make female shrimp lay eggs, and washing and sterilizing the collected fertilized ovum; incubating the fertilized ovum into the nauplius under the conditions that the water temperature is between 28 and 31 DEG C, the salinity is 2 to 3 percent, the pH value is 7.8 to 8.6, dissolved oxygen is 6 to 10mg/l after 13 to 18 hours, putting the nauplius into a nursing pond which is used for culturing seedlings and treated by the water, wherein the density of the nauplius is 200-300 thousand/m<3>; in the late-mid period of the nauplius growing, introducing chaetoceros muelleri without virus according to the concentration of 5*104cell/ml, and when breading nauplius the into the zoea, introducing bacillus subtilis according to the concentration of 1.25*104cfu/ml; and after the shrimp is bred to 0.8 to 1cm, obtaining the seedlings. The whole breading process is subjected to regular PCR detection, and no specific pathogen WSSV and TSV is ensured in the whole breading process. The method has the advantages of no specific virus, rapid growth, high disease resistance, high stress resistance, short breeding period, large and uniform growing standard, high yield, good investment benefit and the like.
Owner:李活

Environment-friendly water purifier, preparation and using methods thereof

The invention discloses an environment-friendly water purifier, preparation and using methods thereof. The water purifier is prepared by mixing a flocculating agent, a metal-chelator and microbes; under the combined action of the three ingredients, the purification effect of a water body can be strengthened, the water body quality can be remarkably improved, the water body becomes clear, odor can be eliminated, the hardness of the water quality can be reduced, the dissolved oxygen can be increased, the contents of ammonia nitrogen and nitrate nitrogen of the water body can be reduced, heavy metal ions can be reduced, pathogenic bacteria can be reduced, suspended matters and harmful algae in the water can be reduced, diseases of aquatic animals and plants can be reduced, degradation of pollutants in the water can be accelerated, and the aquatic ecological development is healthy and sound. The water purifier does not contain aluminum, iron, chlorine, heavy metal ions or other harmful substances, is safe, environment-friendly and healthy, has a remarkable effect of purifying sewage in the agriculture, animal, husbandry and fishery industries, domestic sewage and industrial sewage, and is of important meaning for environmental protection and human health protection.
Owner:广东中人环保科技工程有限公司

Electric kettle with automatically opening and closing lid based on rate of water temperature change

The invention discloses an electric kettle with an automatically opening and closing lid based on rate of water temperature change, comprising a kettle body, an automatically opening and closing lid mechanism, a single chip microcomputer, an electronic switch, a power supply and a temperature sensor. The kettle body comprises a lid and a heating resistor. The single chip microcomputer comprises a temperature acquisition module, a boiling judging module and a control module. Boiling state of the water in the kettle is judged by the boiling judging module based on the rate of water temperature change. If the water is judged as in the boiling state by the boiling judging module, the lid will be opened by the automatically opening and closing lid mechanism controlled by the control module. After a preset period of time, the electronic switch is turned off and the lid is closed by the automatically opening and closing lid mechanism controlled by the control module. The invention proposes an effective method to judge the boiling state of water in an electric kettle. And by use of the automatically opening and closing lid mechanism, the lid is opened automatically after boiling and the water is kept heated for a preset period of time and then the lid is closed automatically. In this way, hazardous substance in water is fully volatilized and water quality is improved.
Owner:黄继昌

Method for advanced treatment and reuse of printing and dyeing wastewater pre-processed by macroporous resin

The invention discloses a method for advanced treatment and reuse of printing and dyeing wastewater pre-processed by macroporous resin. The method comprises the following steps: taking the printing and dyeing wastewater for the secondary treatment; performing conducting Fenton reaction precipitation, ultra-filtrate membrane filtration, macroporous resin absorption and reverse osmosis membrane separation on discharged wastewater subjected to the treatment, wherein the output water of the reverse osmosis membrane is adopted as the high-quality water for recycling for enterprises, and the concentrated water of the reverse osmosis membrane is emitted on standard, or is emitted to a sewage plant through nano tubes for centralized processing. The method has the advantages that (1) the regular pre-processing technology and multi-media filtration procedure before the macroporous resin is eliminated, and the investment and operation cost is reduced; (2) the ultra-filtrate membrane filtration is adopted as the pre-processing of the macroporous resin, the input water quality is improved, pollutants, such as suspended solids, in water are greatly reduced, the service life and the regeneration period are prolonged, and the operation cost is lowered; (3) the macroporous resin absorption is added as the pre-processing of the reverse osmosis membrane on the basis of the ultra-filtration, the input water quality of the reverse osmosis membrane is improved, pollution is relieved, the service life and the cleaning period are prolonged, and the water output of the reverse osmosis membrane is improved.
Owner:NINGBO QINGSHUIYUAN WATER TECH

Method for removing silicon dioxide in water

The invention discloses a method for removing silicon dioxide in water. The method mainly comprises the following steps: (1) adding alkali for pretreatment to colloidize silicon dioxide, calcium and magnesium impurities in water; (2) electro-flocculation reaction precipitation: using an aluminum plate, an iron plate or an aluminum-iron mixed plate as a positive plate for electrolysis to generate an aluminum hydroxide or ferric hydroxide flocculant, after adsorption and alkali treatment, forming silica and calcium, and the magnesium impurities colloid particles, and performing co-deposition; 3)air flotation and impurity removal: floating waste water processed in the step 2) to remove impurities, and removing silica particles and other impurities which are difficult to precipitate in the water; and 4) membrane filtration: filtering the waste water processed by the step 3) by a membrane filtration apparatus, and realizing deep filtering treatment on the silica impurities in water. The whole process removes silicon dioxide thoroughly and maturely, and the process design is reasonable and coherent, also effectively removes calcium and magnesium impurities in the water, improves the quality of the processed clear water, and improves the recovery and application value of the processed water, has strong resistance to shock loading, and has good industrial application prospects.
Owner:CHENGDU FILTRASCALE TECH

Intelligent fish tank

ActiveCN105746416AImprove water qualityPurify the breeding environmentPisciculture and aquariaEngineeringWater quality
The invention discloses an intelligent fish tank. The intelligent fish tank comprises an intelligent fish tank main body and a bottom filter device, wherein the bottom filter device is arranged at the bottom of the intelligent fish tank main body and comprises a tank body, a filter device and a water pump, a fault alarm, a control system and a storage battery are arranged at one side of the tank body, the storage battery is used as an emergency power supply of the intelligent fish tank, the filter device comprises filtering areas separated by a plurality of separating plates, and the filtering areas are a water storage area, a physical filtering area I, a physical filtering area II, a biochemical filtering area I, a biochemical filtering area II and a clear water area sequentially and are sequentially communicated. The intelligent fish tank has the advantages that water does not need to be changed manually due to the structural design, full-day 24h unintermittent purification on water in the intelligent fish tank main body can be realized, water quality is improved, breeding environment is purified, water resource is greatly saved, energy conservation and environmental protection are realized, aesthetic property is good, intelligent control of the intelligent fish tank is realized, and safety and practicability are high.
Owner:度测(上海)科技服务中心

Composite alga retaining enclosure for floating plants

InactiveCN102852124AReduce algae biomassImprove water qualityWater cleaningBiological water/sewage treatmentAlgae biomassAlternanthera philoxeroides
The invention relates to a composite alga retaining enclosure for floating plants, comprising inner enclosures, outer enclosures and a floating plant community within the enclosed space by the inner enclosures and the outer enclosures. The inner enclosures and the outer enclosures are fixed on inner enclosure fixing piles and outer enclosure fixing piles embedded in bottom mud respectively; the inner enclosures and the outer enclosures are arranged in parallel according to the distance of twice the wave length, each of the outer enclosures comprises a flexible large-aperture nylon meshy hanging slice with the aperture of 50mm, each of the inner enclosures comprises a flexible small-aperture engineering non-woven geotextile hanging slice with the aperture of 50 meshes, the top ends are 1.5m above higher than the high water level. The floating plant community is preferably activated broken branches of alternanthera philoxeroides, and the input density is 20Kg per square meter. The composite alga retaining enclosure for floating plants has the functions of floating island wave decaying, floating plant alga trapping and water purification through the inner enclosures, the outer enclosures and the floating plant community therein, and can reduce the alga biomass at a water intake when being used for retaining alga in water head site; and the water quality of the water head site is improved.
Owner:NANJING INST OF GEOGRAPHY & LIMNOLOGY

Rainwater-collection recycling system and construction method thereof

The invention discloses a rainwater-collection recycling system and a construction method thereof. The rainwater-collection recycling system comprises a control system, an initial-rainwater flow dividing well, a water storage pool, a first lifting well, a filtering disinfecting chamber, a clean water pool and a second lifting well, wherein the initial-rainwater flow dividing well, the water storage pool, the first lifting well, the filtering disinfecting chamber, the clean water pool and the second lifting well are sequentially communicated. The first lifting well is communicated with the bottom of the water storage pool and arranged in the water storage pool, and the second lifting well is communicated with the bottom of the clean water pool, arranged in the clean water pool and connected with a recycling point pipe; a stopping weir is arranged in the initial-rainwater flow dividing well, a flow discarding groove is formed in the lower portion of the stopping weir, a rainwater feeding pipe is arranged on the side wall of a water distribution area, the height of the rainwater feeding pipe and the height of the pipe bottom of a first water discharging pipe are larger than or equal to the height of the groove top of the flow discarding groove, and the pipe bottom of an overflowing pipe is flush with the groove bottom of the flow discarding groove; a plurality of back washing pipes are laid on the bottom of the water storage pool, the outer surface of the water storage pool and the outer surface of the clean water pool are sequentially covered with an anti-seepage film layer preventing water seepage and a geotechnical cloth layer from inside to outside, construction and maintenance are convenient, and the recycled rainwater quality is high.
Owner:SDCIC CONSTR GRP CO LTD

Method for performing nitrogen biological removal on low-temperature low-carbon nitrogen ratio sewage

The invention relates to a method for performing nitrogen biological removal on low-temperature low-carbon nitrogen ratio sewage. A device with anoxia ponds and aerobic ponds which are distributed alternatively, arrayed continuously and are communicated with one another, sewage raw water respectively flows into each anoxia pond, outlet water of the tail end aerobic ponds respectively flows back to each anoxia ponds, and biological membrane modules are arranged in each aerobic pond to maintain biomass of activated sludge. Compared with the prior art, the nitration efficiency in the aerobic section is effectively improved by the method through optimizing the raw water to inlet water ratio and equinox backflow ratio in second-stage anoxia-aerobic process, the biomass of activated sludge is maintained by using the biological membrane modules, on one hand, the outlet water quality is improved under normal work conditions, and on the other hand, high-efficient nitration under low-temperature condition is realized. The COD value, the ammonia nitrogen content and total nitrogen level of the outlet water are lower in average, and the first level A standard can be reached under a low-temperature low- carbon nitrogen ratio condition.
Owner:EAST CHINA UNIV OF SCI & TECH

Low concentration coal chemical industrial wastewater processing system

The invention discloses a low concentration coal chemical industrial wastewater processing system. The system which comprises an anoxic tank, a jet aeration system, a microorganism-fixed bioreactor (MFB reactor) and a secondary sedimentation tank is characterized in that: low concentration coal chemical industrial wastewater goes through a barrier, flows out of an equalizing tank, flows into the anoxic tank, then flows out of the anoxic tank and enters the MFB reactor, the MFB reactor which adopts an advanced aeration mode of air blast jet increase and an enzymatic suspension filler in a patent has the advantages of low energy consumption, high oxygen utilization efficiency and small occupied area, and the low concentration coal chemical industrial wastewater which flows out of the MFB reactor enters the secondary sedimentation tank and then is discharged after standards are reached. The system of the invention, which allows problems of high energy consumption, complex operation program and the like existing in routine SBR systems and MBR systems to be successfully solved and has the advantages of strong operation stability, low investment cost, high processing efficiency and low operation cost, is a low concentration coal chemical industrial wastewater processing method with development potential.
Owner:上海明诺环境科技有限公司
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