181results about How to "Meet water quality requirements" patented technology

The invention discloses a winding spiral pipe heat exchanger, the structural style is characterized in that a tubule is winded and embedded into a groove at the outside of the spiral pipe. Wherein one or a plurality of fluid is flowed in the tubule; a fluid is flowed in the spiral pipe; the winding spiral pipe can realize multi-flow heat exchange with the spiral pipe. The groove structure can enlarge heat exchange area and improve the efficiency of heat transfer. In addition, the multi-flow of the tubule can make the fluid in the spiral pipe implement heat exchange with one or a plurality of fluid, so the flexibility and heat exchange efficiency of the heat exchanger can be improved greatly. Compared with the micro-channel heat exchanger, the winding spiral pipe heat exchanger has the advantages that: the structure is simple; the processing is convenient; the metal consumption is less compared with the extension-type heat exchanger; the manufacturing cost is low; the heat exchange coefficient of the fluid is over 2 times than that of the extension-type heat exchanger; if the fluid of the tubule or the fluid of the spiral pipe is leaked, a cross-contamination will not be happened; thereby the winding spiral pipe heat exchanger is most suitable for transcritical CO2 heat pump water heater and other systems.

The invention relates to a staged membrane bioreactor device, for treating sewage or micro-polluted source water, with a water container, pertaining to the environmental protection technology field. The device consists of a half-reaction zone, an anaerobic reaction zone, an aeration reaction zone and a pure water zone. The half-reaction is communicated with the bottom of the aeration zone, the bottom of the half-reaction is provided with an empty valve, one side of the half-reaction zone has a water inlet pump, the inside of the half-reaction has an internal ring filled with stuff, and the top of the half-reaction is provided with a stirrer, and the effluent of the half-reaction automatically flows into the anaerobic reaction zone. The top of the anaerobic reaction zone is provided with a stirrer, the bottom thereof is provided with a sludge empty valve, and a sludge empty device is shaped like a horn mouth and positioned in the anaerobic reaction zone, and the top of the anaerobic reaction zone is provided with a drug feeding mouth. The bottom of the aeration reaction zone has an internal return pump, the lower part of the aeration reaction zone is provided with an aeration pipe with an air inlet positioned at one side of the aeration reaction zone, and a fan is connected to the aeration pipe through the air inlet; the top of the aeration reaction zone is provided with an overflow pipe, the bottom of the aeration reaction zone is provided with an empty valve, while the middle is provided with a membrane component. The pure water zone is divided into two units, and the inside of each unit is provided with an effluent valve. The invention has the advantages of good effluent quality, multi purposes, small land occupancy, flexible and convenient using method, and is applied to the treatment of domestic sewage and micro-polluted source water, and can widen and facilitate the application of membrane bioreactor water treatment and water resource reutilization technique.

The invention discloses a method for treating pure terephthalic acid refined wastewater, which relates to the field of comprehensive treatment of industrial sewage. The method comprises the following steps of: 1. adjusting a pH value of the refined wastewater to 4 to 5 to dissolve fine suspended solids in the refined wastewater; 2. conveying the refined wastewater into a resin adsorbing unit to remove cobalt and manganese ions in water; after running the resin adsorbing unit for certain time, regenerating and recycling the cobalt and manganese ions; 3. carrying out first-stage reverse osmosis membrane treatment on the refined wastewater, carrying out second-stage reverse osmosis membrane treatment on treated producing water and draining the concentrated water into a sewage treatment plant; and 4. carrying out second-stage reverse osmosis membrane treatment on the producing water subjected to the first-stage reverse osmosis membrane treatment, returning the treated producing water to a production device system and returning the concentrated water to a first-stage reverse osmosis membrane water inlet. The method of the invention recycles the cobalt and manganese ions in the refined wastewater as by products, carries out purification treatment on the refined wastewater, recycles most of wastewater as production process water for recycling and achieves the aim of carrying out comprehensive utilization on the refined wastewater.

The invention discloses a comprehensive recycling technology for mine water with high suspended matter content and a high mineralization degree. A coagulating agent is added into mine raw water, so that suspended colloid fine particles in water are subjected to conventional compressive double-electric-layer destabilization, and are treated with a three-membrane gradual filtering technology consisting of first-stage microfiltration membrane filtering, second-stage microfiltration membrane filtering and third-stage microfiltration membrane filtering. After the mine raw water is subjected to first-stage microfiltration membrane filtering, effluent can meet the requirement of production under a coal mine; and after the mine raw water is subjected to second-stage microfiltration membrane filtering and third-stage microfiltration membrane filtering and is disinfected with O3, effluent can meet the requirement of daily drinking. Different reverse osmosis membrane automatic back washing technologies and back washing chemical medicament formulae are adopted according to water of different mineralization degrees, so that the problem of poor running effect of a mine water reverse osmosis system with a high mineralization degree is solved, and the effluent quality and stable running of a water treatment system are enhanced.

The invention relates to a reuse treatment method for industrial wastewater from a refrigerator compressor factory. Firstly, independently collected emulsified bath solution wastewater is acidified and demulsified, free oil and emulsified oil in the wastewater are eliminated, and then the wastewater is subjected to Fe<2+>/H2O2 oxidation, the effluent pH is 7-8, and then coagulant aid is added forcoagulation sedimentation, and organic matter, metal salt and SS are removed, so that emulsified bath solution water is obtained. Subsequently, the emulsified bath solution water and the independently collected rinsing wastewater are uniformly mixed according to the ratio of 1:20-30 to serve as the source water for micro filter membrane treatment; the source water is subjected to air floatation oil separation dephosphorization, coagulation and activated carbon adsorption to obtain water with the pH value of 9-10 under micro filtration, and then the water under micro filtration enters the micro filter membrane, so clean water is obtained; and the clean water and tap water are mixed according to the ratio of 1:1-2, are subjected to filtering by activated carbon and 5um precise filtration and enter a reverse osmosis membrane, and then pure water is obtained after desalination, and the pure water can be reused for production. With the reuse treatment method, the water quality of reused water is stable and can reach the standard of pure water used by enterprises for production, the water is reused for a product line, so that the wastewater discharge of the enterprises is greatly reduced, the use volume of tap water is saved, and remarkable economical and social benefits are achieved.

The treatment method with high performance and low cost for sediment in polluted water comprises: mixing the sediment with household sludge to extrusion form, then calcining for 20~40min at 1100~1300Deg. Wherein, the ceramsite in this invention has bulk specific gravity as 610-970kgíñm-3, particle bulk weight as 1932-2308 (kgíñm-3), water absorption ratio as 3-12%, void ratio as 46-65%, and specific surface area as 1. 82-3. 98(m2íñg-1), and fit to spread for application.

Provided is an apparatus for producing reclaimed water based on electrolysis and double membrane technologies. The apparatus is disposed with an electrolysis system, an MBR system and a reverse osmosis system. Further provided is a method for producing reclaimed water using the apparatus, comprising the following steps: retrieving biochemical sewage through a water pump (12) and inputting the biochemical sewage into an electrolysis apparatus (13) of the electrolysis system to be electrolyzed, then enabling the sewage to enter an MBR reaction tank (26) through a grid (22) to obtain primary reclaimed water, pumping the primary reclaimed water into the reverse osmosis system with a high pressure pump (45) to separate dialysis water and concentrated water, enabling the dialysis water to enter a reclaimed water storage tank (48) to obtain ultrapure reclaimed water, enabling a part of the concentrated water to flow back for cyclic membrane filtering and separation, enabling a part of the concentrated water to flow back to enter an electrolysis procedure for cyclic use, and discharging the rest part of the concentrated water.

The invention provides a method for treating and recycling industrial circulating wastewater, which comprises the following steps of: adding a polyacrylamide flocculant into the circulating wastewater to perform flocculation reaction, wherein 4 to 8mg of flocculant is added into every 1L of sewage and the flocculation reaction time is controlled to be at least 5 minutes; allowing the sewage after the flocculation reaction to enter a high-efficiency floatation tank, controlling the air floatation time to be at least 10 minutes, allowing the air floatation water to discharge into a filter tank, and discharging the water after filtering; adding an acid into the filtered discharged water to regulate the alkalinity of the water body, adding a scale inhibitor and delivering the water to a cartridge filter; and delivering the filtered effluent from the cartridge filter to an electrodialysis reversal system to perform desalination, wherein the effluent treated by the electrodialysis reversal system is used as make-up water for circulating water. The method can more effectively realize continuous treatment of the sewage and water production without using nanofiltration and reverse osmosis technology; the treated sewage keeps a certain amount of ions; and the effluent meets the requirements of the water quality of reused water of a circulating water system.

The invention relates to a comprehensive treatment method of dyeing wastewater. The comprehensive treatment method comprises the following steps of: adsorbing the wastewater by using pulverized fuel ash after passing through a grating, and adding an appropriate amount of additive in the adsorption process; filtering effluent, then adjusting the pH value of the filtered effluent, adding the effluent to a bubbling tower to further carry out decoloring treatment; and adding the decolored effluent to a hydrolysis acidification pool to carry out anaerobic treatment, carrying out further biochemical treatment by using a biological aerated filter, carrying out biological oxidation and intercepting suspended solids, and therefore a subsequent secondary sedimentation tank is saved; and finally, carrying out advanced treatment by using a security filter and an ion-exchange column, wherein the effluent can be close to the recyclable requirement. The comprehensive treatment method can be used for effectively removing fine suspended solids (SS), COD (Chemical Oxygen Demand) and chromaticity in the dyeing wastewater, and the removal rate of the SS, COD and chromaticity can reach more than 98 percent; the comprehensive treatment method has the advantages of small occupied area, low investment, simpleness in operation, low energy consumption, operation stability, no sludge bulking and the like; and in addition, the purposes of treatment of wastes with processes of wastes against one another and comprehensive utilization are achieved, the effluent quality is favorable, and the requirement of the water quality of reuse water for production can be met.

The invention discloses in-situ adsorption-microelectrolysis-catalytic oxidation sewage treatment equipment and method, belonging to the technical field of sewage treatment in environment engineering. The in-situ adsorption-microelectrolysis-catalytic oxidation sewage treatment equipment is characterized in that adsorption equipment, electrolysis equipment and catalytic oxidation equipment are integrated so as to gather enable pollutants to be gathered from a low-concentration water phase onto an adsorbent; by using the favorable electric conductivity, the adsorbent is used as a complexly polarized three-dimensional electrode to form countless micro electrolytic baths, so that the organic pollutants are electrolyzed while organic matters are adsorbed, and adsorption active sites are continuously regenerated; and by utilizing an electric insulation material, the three-dimensional electrode is complexly polarized and has a high-class oxidation catalyst function at the same time, so that a gas oxidant dissolved in water and an oxidant generated by side reaction of the electrode form a high-class oxidant to efficiently remove the organic pollutants. According to the equipment and the method, the problems of slow reaction speed, low space-time efficiency, low current efficiency and low pollutant degradation efficiency in the conventional electrolytic reactors are solved, and an excellent market prospect is provided.

The invention discloses a hot-film-coupling seawater desalination device driven by low-temperature waste heat, belonging to the field of industrial energy saving. The hot-film-coupling seawater desalination device comprises an organic Rankine cycle system, a reverse-osmosis seawater desalination system, a low-temperature multi-effect distillation system and a temperature regulation system, wherein the organic Rankine cycle system is used for driving the reverse-osmosis seawater desalination system to produce fresh water, and a heat source is provided by the waste heat discharged by the organic Rankine cycle system to the low-temperature multi-effect distillation system so as to fresh water; the temperature regulation system is used for regulating the temperature of raw material seawater entering the reverse-osmosis seawater desalination system. According to the hot-film-coupling seawater desalination device, the organic Rankine cycle system, the reverse-osmosis seawater desalination system and the low-temperature multi-effect distillation system are combined, so that the efficient utilization and the deep utilization of the industrial waste heat are improved, and the requirements of different seawater desalination users on the water quality and the water yield are met.

The invention provides a method for treating and recycling byproduct water of a production process for converting an oxygen-containing compound into olefin, and relates to the technical field of process wastewater treatment and recycle of coal chemical industry and natural gas chemical industry. The combined process can effectively remove organic small molecular substances in the process byproduct water, the removal rate of COD in the wastewater can reach over 90 percent according to the pretreatment process, and the pretreated wastewater can meet the water quality requirement of circulating water supplementing water and boiler supplementing water after ultra-filtration and reverse osmosis treatment respectively or is used for supplementing water in the MTO process or other chemical processes. The method has the advantages of stable and reliable treatment effect, low treatment cost and simple and feasible operation, and is easy to realize industrialized application.

A water recycling device in artificial wetland organic industrial water with high concentration comprises a grit settling tank, a grid, a collected water neutralization tank, an immersible stirrer, a first-stage sewage pump, a hydrolysis equalizing tank, a second-stage sewage pump, a UASB reactor, a three-phase separator, a water distributor, an anaerobic filter chamber, anaerobic filler, a blower, aerobic filler, an aerator, a biological contact oxidation tank, a secondary settlement tank, a travelling type sludge scraping machine, a sledge tank, a sledge pump, a sledge condensed tank, an underflow pump, a belt type filter press, electrolytic filler, a sterilizing tank, a chlorine adding pump, a chlorine adding device, a chlorine dioxide generator, a monitor and an artificial wetland. The invention can be widely applied in water recycling systems in different organic waste water with high concentration, and has the characteristics of less investment, stable operation, resource utilization, low operation cost and the like.

The invention relates to pond culture wastewater treatment and provides a facility for the treating pond culture wastewater, particularly relating to a facility for the overall treatment of the pond culture wastewater. The facility of the invention comprise a bio-pack, a wetland device and filter tanks, wherein the facility is characterized in that the bio-pack is barrel-shaped, the bottom part of the barrel-shaped bio-pack is filled with corallites, a honeycomb plate is arranged above the corallites, and biological filtration bulbs are arranged above the honeycomb plate; a spraying pipe connected with a water pump is arranged at the center of the bio-pack, and a conical surface spraying disc is arranged above the mouth of the spraying pipe; the wetland device is divided into three cells, a honeycomb-shaped water-permeable cement plate is arranged in each cell of the wetland device, cobbles, broken stones and yellow sand are arranged on the cement plate, and yellow iris, scirpus tabernaemontani and reed are planted in the wetland device; a front filter tank and a rear filter tank are respectively arranged on the front side and rear side of the wetland device; the bio-pack is connected to the bottom part of the front filter tank via pipes; water channels are arranged below the cement plate of the wetland device; and drain pipes are arranged at the upper part of the rear filter tank to divert the water into a fishpond. The invention is applicable in the treatment of the pond culture wastewater.

A recovery and treatment system for culture waste water is disclosed. The system includes three staged precipitative filters, a microbe treatment tank, a plant treatment tank, an adsorption tank and an alga treatment tank. The culture waste water generated in a culture process flows through the first-stage precipitative filter, the microbe treatment tank, the second-stage precipitative filter, the plant treatment tank, the third-stage precipitative filter, the adsorption tank and the alga treatment tank in order and is treated. The treated water is reused for culture. The system is suitable for a factory-like aquaculture mode. The waste water generated in the culture process is subjected to biological and biochemical treatment and can reach water quality requirements on water used for culture, thus increasing the utilization rate of water and reducing the emission amount of the waste water.

The invention relates to a technology for treating steel mill converter gas dedusting water by adopting a low hardness method, which has the steps: wastewater from a converter gas washing tower enters an elevated tank, and an inorganic coagulant is added to the water body inside the elevated tank; an outlet of the elevated tank passes through a coarse granule separating machine which then recovers the coarse granule; the effluent of the coarse granule separating machine enters a slant plate sedimentation tank; an organic coagulant and a calcium reducing agent are added to the water body in the slant plate sedimentation tank; the sludge in the slant plate sedimentation tank is dewatered and reused; the effluent of the slant plate sedimentation tank enters a hot pond; an efficient sale-inhibition dispersion agent is added to the water body in the hot pond; and finally, the effluent of the hot pond is cooled by a cooling tower, enters a water cooling pond and is recycled to the converter gas washing tower for use. The technology has the advantages of improving water treatment efficiency, reducing water treatment cost, improving the cyclic utilization rate of the wastewater to 98 percent, ensuring zero wastewater efflux of the entire system and reducing water consumption per ton steel and wastewater discharge per ton steel, thus realizing the clean production of steel enterprises.

The invention aims to provide a brine-desalination method, which organically combines a distillation method and a membrane method for brine desalination, the high pressure of the strong brine of the membrane method is utilized to drive the negative pressure of a Venturi injection pump for lowering the subsequent evaporating pressure, so the evaporating process is carried out under the atmospheric pressure, the evaporating temperature can be effectively reduced, the evaporating energy consumption is saved, the concentration of the evaporating raffinate is high, and moreover, the heat of the evaporating raffinate is utilized for the subsequent crystallization; and the latent heat of the evaporated steam is effectively utilized to heat the brine to be evaporated, the heat energy is further recovered, and the energy consumption is lowered.

The invention relates to a coagulating sedimentation agent for treating low-temperature low-turbidity water and belongs to the field of applied chemistry, in particular to the field of coagulating sedimentation treatment agents of low-temperature low-turbidity water. The coagulating sedimentation agent consists of coaly activated carbon powder and oxidized polysilicate aluminium ferric according to a mass-to-volume ratio (mg/mL) of 1:1 to 10:1. The coagulating sedimentation agent is capable of breaking through the limitation that the sedimentation effects of conventional aluminum and iron salt coagulating agents are greatly influenced by factors such as water inlet temperature, suspended solids and turbidity, is taken as a high-efficiency, economic and environment-friendly coagulating agent for treating low-temperature low-turbidity water generated from power plants and water works and industrial water (living water, wastewater and the like), and has high economic benefits and obvious social benefits.

The invention discloses a seawater-electrolyzing chlorine-producing antifouling method and belongs to the field of seawater antifouling. The method includes the steps that seawater is firstly subjected to coarse filtration to remove impurity particles in the water; secondly, an ultra-filtration membrane module is used for further removing minute and colloidal substances in the seawater; the purified seawater is pretreated, and the calcium and magnesium ions are removed through a nanofiltration membrane to reduce the total concentration of the calcium and magnesium ions to 500-600 ppm; then thetotal concentration of the calcium and magnesium ions in the seawater is less than 100 ppm by using an adsorption resin; the pretreated seawater is introduced into a seawater ion membrane electrolysis cell for electrolysis; and the seawater is electrolyzed to generate chlorine gas and dilute lye. The coarse filtration, fine filtration and the membrane module are adopted to pretreat the seawater to achieve the purpose of seawater purification of calcium magnesium and sulfate ions, and the water quality requirement of the seawater for the ion membrane electrolysis cell can be satisfied. According to the ion membrane electrolysis cell technique, the ion membrane electrolysis cell used for electrolyzing the seawater is formed, finally, a method for making full use of electrolytic chlorine isprovided, and measures for efficient chlorine distribution to seawater pipelines are included.

The invention discloses a water supply method and a system, in particular to a cooling water supply method and a system for equipment in the technical field of alumina. The method comprises the following steps: qualified condensed water obtained by mother liquor evaporation or autoclave digestion is sent to a soft water tank; the soft water tank sends the soft water to a plate type heat exchanger;the plate type heat exchanger carries out heat exchange on the soft water and the circulating water sent from a circulating water station; and the soft water after heat exchange is sent to mechanicalequipment needing cooling in an alumina plant for cooling. The invention is simple in composition, can be arranged near the operation places of the equipment, save construction investment and solve the problem that the pipelines are not suitable for laying due to long delivery distance. The invention can ensure the temperature and quality of the cooling water efficiently, realize cycle use of thecooling water and reduce consumption of the production water.

The invention discloses a PSO-LSSVM-based on-line control method and apparatus for dosing of a water island. The method comprises: M groups of historical parameter values with outgoing water indexes meeting requirements of an incoming water monitoring index as well as a historical dosing amount of a dosing drug corresponding to each historical parameter value group are obtained; on the basis of a least-squares support vector machine, an on-line control LSSVM model is established, wherein the historical parameter values are input vectors of the LSSVM model and historical dosing amounts are output vectors of the LSSVM model; a PSO algorithm is executed on the LSSVM model and an optimal solution of parameters in the LSSVM model is calculated; and the calculated optimal solution is inputted into the LSSVM model to obtain a dosing model of a water island; an incoming water monitoring index is monitored in real time to obtain a group of real-time parameter values; and real-time parameter values are inputted into the dosing model of the water island and the dosing amounts of the dosing drugs at a current time are determined. With the method, the influence on the operating process by the quality of incoming water can be eliminated; the dosing amount is updated in real time; the drug wasting is reduced; and thus costs are lowered.

The invention relates to a treating process of printing and dyeing waste water, which comprises a grid, a conditioning tank, a settling tank, a decoloring fluid bed, a hydrolysis and acidification tank, an aerobic membrane bioreactor, a sludge thickening tank and a sludge dewatering tank, wherein a stuffing mixture of natural manganese sand and spongy iron (or scrap iron) with a thickness of 100-120 cm is arranged in the decoloring fluid bed. The treating process provided by the invention can effectively weaken the color of the printing and dyeing waste water and remove organic pollutants from the printing and dyeing waste water, has the advantages of stable treatment effect, low running cost, small sludge discharge amount and the like, and is convenient to operate and easy to automatically control. The quality of the treated water can come up to the discharging standards and meet the water quality requirements for reuse water for production, thereby having favorable environment benefits, economic benefits and social benefits.

The invention provides a technology for treatment of mariculture circulating water of biological filter and membrane filtration, which comprises the following steps of: (1) pretreating; (2) primarily filtering by a biological filter; (3) moderately filtering by a membrane filtering unit; and (4) precipitating in an impounding reservoir. Firstly, big-particle pollutants are intercepted by the biological filter, and other pollutants are subjected to oxidative degradation to remove main pollution impurities in a water body; and then, small-particle pollutants and microorganisms remained in the water body are intercepted by the membrane filtration so as to achieve the purpose of purifying the water body and circularly using. The technology disclosed by the invention keeps the advantages of the traditional biological filter on resolvable pollutants in the circulating culture water body. By regulating the seawater treatment process step, the efficient, safe and stable circulating culture water body treatment technology is formed by fully utilizing the characteristics of low effluent particles and microorganisms in the membrane filtration technology.