117 results about "Waste pond" patented technology

The invention discloses a process for treating comprehensive electroplating wastewater, which solves the technical problems existing in the prior process for treating the comprehensive electroplating wastewater. The process comprises the following steps: (1) establishing wastewater disposal basins for the electroplating wastewater by classification, and automatically adding waste acid and waste alkali into the basins; (2) reducing hexavalent chrome for pretreatment; (3) carrying out secondary oxidation decyanation and reduction treatment on wastewater containing cyanogen; (4) mixing pretreated wastewater containing chromium and wastewater subjected to the secondary oxidation decyanation treatment without cyanogen with the comprehensive electroplating wastewater containing copper, nickel and zinc, adjusting the mixed wastewater to neutrality, and adding an NTC coagulating agent into the mixed wastewater; (5) after coagulation, carrying out solid-liquid separation on the wastewater in a high-speed sedimentation tank; and (6) filtering the wastewater which is subjected to the solid-liquid separation in an intermediate water tank, and recycling the qualified wastewater or discharging the qualified wastewater in accordance to standard. The process has the advantages that the problem that different metal ions require respective treatment or multiple circulating treatments because of different concentrations can be solved, the problem of independently setting air flotation to remove oil can be solved, the problem of recycling the waste acid and the waste alkali can be solved; and investment, operating cost and floor area are saved.

The invention discloses a wastewater separation and collection monitoring method in an electroplating industry park, which comprises the following steps: a sample is acquired from a wastewater collection pipe; the acquired sample is analyzed and measured; the measuring value obtained by the analysis and the measurement is compared with the preset value; according to the compared result by the above steps, when the measuring value is less than or equal to the preset value, wastewater is delivered to a cyanide wastewater regulating reservoir or a chromate wastewater regulating reservoir or a comprehensive wastewater reservoir, when the measuring value is more than the preset value, wastewater is delivered to a mixed draining reservoir. Compared with the prior art, the invention has the advantages that: the wastewater separation and collection monitoring method can rapidly and dynamically detect the water quality drained by each factory, especially the mixed draining condition of electroplating wastewater, and directs each factory to manage the draining of wastewater, separates and processes wastewater according to the water quality of wastewater, ensures that an electroplating wastewater centralized processing system stably operates in the electroplating industry park, lowers the operation cost, is convenient for the management, effectively reduces the labor intensity, and improves the processing property and the efficiency with convenient monitoring.

A method of disposing waste includes the step of forming a primary waste pond called an Advanced Facultative Pond (AFP). A stable microbiological methane fermentation zone is established within the AFP. The system constitutes a complete primary treatment of organic waste and wastewater that does not require daily sludge handling typically associated with organic waste treatment and disposal The method of the invention converts organic compounds, including settleable solids, into methane. The invention controls sulfide odors from methane fermentation. The invention also provides a method of filtering raw wastewater through a bed of fermenting organic solids suspended by gas evolved in a fermentation zone. Hydrogen sulfide is oxidized in accordance with the invention. The technique of the invention biologically increases pH near the pond surface, thus retaining hydrogen sulfide in solution in the pond water. The biological increasing of the pH level near the pond surface increases the rate of die-away of pathogenic bacteria. The invention transforms proteins and other organic nitrogen compounds to nitrogen gas. The invention also transforms proteins and other organic nitrogen compounds to nitrogen gas; the invention detoxifies chlorinated hydrocarbons and volatile organic compounds; the invention captures and stores gases evolved from methane fermentation; the invention removes heavy metals, while establishing meromixis in fermentation cells or zones within primary wastewater ponds.

The invention discloses a cooling crystallization desalting system for high-salinity waste water, which is characterized in that the system comprises a waste water storage groove for holding waste water. An outlet of the waste water storage groove is connected with a pipe-side inlet of a waste water heat exchanger; a pipe-side outlet of the waste water heat exchanger is connected with an inlet atthe lower part of a cooling crystallizer; the cooling crystallizer is provided with two outlets, that is, the upper outlet of the cooling crystallizer outputs a mother solution to a comprehensive wastewater pool, and the bottom outlet of the cooling crystallizer outputs crystal mush to a centrifugal machine; an upper outlet of the centrifugal machine outputs filtering liquid to the comprehensive wastewater pool, and a bottom outlet of the centrifugal machine outputs filtering residues to a salt recovery pool; a shell-side inlet of the waste water heat exchanger is connected with an external pipe outlet of a liquid-oxygen heat exchanger; an external pipe inlet of the liquid-oxygen heat exchanger is connected with an outlet of a glycol solution storage tank; an inlet of the glycol solution storage tank is connected with a shell-side outlet of the waste water heat exchanger; liquid oxygen is aerated to an internal pipe inlet of the liquid-oxygen heat exchanger; and an internal pipe outlet of the liquid-oxygen heat exchanger is connected with a supercritical water oxidization system.

The invention relates to combined treatment device and process for acid-washing wastewater of stainless steel, and belongs to the technical field of environment engineering, and solves the problem of environmental pollution and resource waste. The device comprises a wastewater pond, a filter connected with the wastewater pond, a primary cation exchanger connected with the filter, a secondary cation exchanger connected with the primary cation exchanger, a safety filter connected with the secondary cation exchanger and a reverse osmosis device connected with the safety filter. The first and second cation exchangers are provided with regenerated acid liquor adding ports. The device further comprises a heavy metal gas remover connected with the first and second cation exchangers. The heavy metal gas remover is provided with a settling agent adding port. A circulating pipeline for transporting filtered water in the heavy metal gas remover to the wastewater pond is arranged between the heavy metal gas remover and the wastewater pond. Wastewater meets the standard and is discharged, and wastes are recycled, so that the resources are greatly saved.

The invention relates to a method for treating electroplating integrated waste water. Aiming at overcoming the defects that the precipitation of heavy metal is not complete and treated electroplating waste water is difficult to reach a standard of the prior method of adopting a sodium hydroxide solution to regulate the pH value of the electroplating integrated waste water to precipitate the heavy metal in the electroplating waste water so as to treat electroplating integrated waste water, the invention provides the method for treating the electroplating integrated waste water, which ensures heavy metal precipitates completely and the treated electroplating waste water can reach a standard and is easy to operate and control. The method comprises the following steps: (1) the electroplating waste water is filled into an electroplating integrated waste water pond, and lime slurry is added and stirred to the electroplating waste water (2) ferrous sulfide is added to the supernatant fluid of the electroplating waste water treated by the lime slurry; (3) a PAC flocculating agent is added and stirred to the electroplating waste water; (4) a PAM flocculating agent is added to the electroplating waste water and stirred to the same for a while for naturally precipitation; and (5) the supernatant fluid of the electroplating waste water which reaches the standard is drained off, precipitate press filter is carried out, and filter liquid returns to the electroplating integrated waste water pond.

The invention relates to treatment and reuse technology for aluminum surface treatment wastewater, which is characterized in that the technology mainly comprises working procedures of pretreatment, electric coagulation treatment, chemical precipitation and adsorption, filtration and reverse osmosis; pretreating high fluoride-containing wastewater, ammonia-containing wastewater and nickel-containing wastewater respectively, centralizedly draining the wastewater to a wastewater disposal basin, conveying the wastewater to a pH adjustment tank, conveying the wastewater to an electric coagulation machine for electric coagulation treatment after the pH value is adjusted to be between 4 and 6 in the pH adjustment tank, and making the wastewater after the electric coagulation treatment enter an electric coagulation discharge bay; and conveying the wastewater in the electric coagulation discharge bay to a coagulating basin, conveying the wastewater to a flocculation basin, adding a flocculating agent into the flocculation basin to ensure that the wastewater performs a coagulation-flocculation reaction, and finally adding activated carbon from the position, which is close to a water outlet, of the flocculation basin to adsorb small granular substances and colors in the wastewater. The technology can effectively remove heavy metals and salts in the wastewater, ensure that the COD in the treated wastewater is less than or equal to 25 mg/L, and has high reuse rate of reclaimed water.

The invention relates to a treatment method of beneficiation wastewater. The treatment method comprises steps as follows: the beneficiation wastewater is introduced into a wastewater pond, the pH (potential of hydrogen) value of the beneficiation wastewater is adjusted to range from 4 to 7, hydrogen peroxide and ferrous sulfate are added to the beneficiation wastewater, the mixture is stirred to be subjected to a reaction and then is subjected to standing for 10-20 hours, sediments in the beneficiation wastewater are removed, a supernatant is poured into a sedimentation tank, polyacrylamide is added, sedimentation is performed and sediments are filtered out, and recycle water is obtained. With the adoption of the treatment method of the beneficiation wastewater, the wastewater treatment effect is stable, efficient treatment is realized, the operation is simple, the technological procedure is short, the cost is low, and the method has the advantages of energy conservation, environment protection, and wide application prospects.

The invention refers to a comprehensive utilization technology of trash from the eateries. The existing trash from the eateries is flooding, affects the sanitation of the cities' environment seriously, pollutes water and air and harm people's health. The invention uses the trash from the eateries synthetically, puts them into the store-grooves and then into the separator for separation and make them into solid and liquid. The solid is made into feedingstuff and the liquid is sent for separating the water and oil. The oil with water is put into the reaction kettle for distillation. The oil and water is separated, the waste water is discharged after biochemical treatment and the oil is separated into vegetable oil and animal oil as the fuel and industrial oil. It adopts centralized, enclosed and automated production process management, discharges no waste air and waste water, uses it synthetically, changes the trash into useful material and is benefit to our nation.

The invention relates to an oil-containing sludge treatment system and a process. The oil-containing sludge treatment system comprises a pretreatment system, an oil-sludge separation system, a sludge-sand separation system, a sludge-water separation system, a film curing system, a full-circulation dry distillation system, a heating system, a clean water system, a sewage tank and an oil storage tank, wherein the pretreatment system comprises a crushing machine, a screening device, a collecting tank and a waste pond, is used for crushing, screening and fluidizing an oil-containing sludge raw material and used for collecting wastes, and is respectively connected with the heating system and the oil-sludge separation system; the oil-sludge separation system is respectively connected with the heating system, the sludge-sand separation system and the oil storage tank; the sludge-sand separation system is connected with the sludge-water separation system; the sludge-water separation system isused for separating sludge from water and respectively connected with the film curing system and the sewage tank; the film curing system is connected with the full-circulation dry distillation system;the full-circulation dry distillation system is respectively connected with the sewage tank and the oil storage tank; the clean water system is respectively connected with the sludge-sand separationsystem and the sludge-water separation system.

The invention discloses a forestation technology using mangrove forest plant to convert a pond to forestry. The method comprises the steps of building planting ridges and water channels in a waste pond, arranging a water gate, controlling water in the water channels to communicate with outside by a gate in the water gate, wherein multiple planting ridges can be arranged according to the size of the pond; opening the gate of the water gate to enable water in the pond to change along with external water, and determining the high water mark in the pond, wherein the heights of the planting ridges are selected to be lower than the high water mark by 10cm, the bottom areas of the planting ridges are larger than the opening areas and vertical section shapes of the planting ridges are a trapezoid with a narrow upper part and a wide lower part; planting tree seeds into the planting ridges, encircling the planting ridges with a gauze element of about 20 meshes, opening the gate to communicate water in the pond with an outside water body and enable the water in the pond to change along with the tide change of the outside water body, inspecting in each month and timely replacing dead individuals. The method has the beneficial effect the tree seed survival rate of the mangrove forest is high by turning the pond to forestry.

The invention relates to a bioremediation technology for polluted seawater, which is a method to purify breeding wastewater with a system integrated with 'sponge-microalgae'. 1) first, marine feed microalgae is directly inoculated in factory breeding wastewater to transform the inorganic N, P salt in seawater into microalgae biomass; 2) 3-24h after inoculating the microalgae, the sponge is put into the breeding wastewater with increased microalgae biomass to filter-feed the microalgae; the system integrated with 'sponge- microalgae' is applied to removing inorganic N, P salt in the seawater to be transformed into microalgae and sponge biomass, thereby purifying the polluted water. The invention makes use of biotransformation, indirectly removes excessive inorganic N, P salt in breeding seawater, reduces the pressure of the environment and increases the biomass of sponge, thereby having wide application and being capable of bringing great economic benefit and social benefit.

The invention discloses integral electroplating waste water treatment equipment, which comprises an integral electroplating waste water pool, a decomplexing pool, a coagulating pool, a flocculating pool, a precipitating pool and a clean water pool in sequential connection and is characterized in that a ferrous sulfide filling material bed is also arranged between the decomplexing pool and the coagulating pool, a water inlet of the ferrous sulfide filling material bed is positioned under the ferrous sulfide filling material bed, and a water outlet of the ferrous sulfide filling material bed is positioned above the ferrous sulfide filling material bed. The invention also discloses an integral electroplating waste water treatment process, which is characterized in that ferrous sulfide is used as slow release filling materials, in addition, the decomplexed electroplating waste water is in sufficient contact with the ferrous sulfide for reaction, hexavalent chromium is reduced to trivalent chromium, and in addition, the trivalent chromium forms stable sulfide precipitates with heavy metals beyond the hexavalent chromium. The integral electroplating waste water treatment equipment and the process are used for the integral electroplating waste water treatment and have the advantages that the operation is convenient, the control is easy, the operation cost is low, the raw materials are easy to obtain, the continuous reagent feeding is not needed, stronger adaptability is realized on the waste water ingredients, the concentration and the water quality, and the like.

The invention relates to a salvaging device, in particular to a wastewater pond floating garbage salvaging device which can prevent arm ache and can improve salvaging efficiency. The wastewater pond floating garbage salvaging device comprises a base, first supports, a first mounting platform, a second support, an arc-shaped sleeve, an arc-shaped rod and an inserting rod, the first supports are mounted on left and right sides of the top of the base, the first mounting platform is fixed between the tops of the first supports on the left and right sides, and the second support is arranged on theright side of the top of the first mounting platform. Garbage can be conveyed backwards through a conveying device, so that the garbage can be cleaned conveniently; floating garbage in a wastewater pond can be salvaged through clockwise rotating of a conveying net belt, so that a user does not need to hold a salvaging net to salvage the garbage in the wastewater pond, the arm ache can be prevented, and salvaging efficiency can be improved.

The invention discloses a treatment device for livestock culture wastewater. The device comprises a wastewater pool of which the right side is provided with a settling pool; an adding pipe is communicated with the right side of the top part of the wastewater pool; a motor is arranged on the left side of the wastewater pool; an output shaft of the motor penetrates through the wastewater pool and extends into the wastewater pool to be fixedly connected with a rotating shaft; and a water feeding pipe of a first water pump is communicated with the right side of the wastewater pool. According to the device, a purifying box is arranged and used for purifying and filtering waste gas produced in the wastewater treatment process, so that the environmental pollution is reduced; an ultraviolet sterilizing lamp is arranged and used for treating bacteria and microorganisms in wastewater; an alum layer, a fine sand layer and a gravel layer are arranged and used for purifying the treated wastewater so as to meet the specified standard; meanwhile, the problem that large amounts of waste gas is produced in the wastewater treatment process and leads to environmental pollution and reduction of the wastewater treatment quality can be solved.

The invention discloses a method for filtering, concentrating and recycling water drained from an anaerobic fermentation pond of a livestock and poultry farm. The method for filtering, concentrating and recycling the water drained from the anaerobic fermentation pond of the livestock and poultry farm includes the following steps: S1, gathering waste water generated after anaerobic fermentation is carried out on excrement and urine in the pig farm, wherein the excrement and the urine in the pig farm and washing water are mixed to enter the anaerobic fermentation pond, and the water drained after anaerobic fermentation is carried out is filtered through sand to be gathered to enter a waste water pond; dry distillation is carried out on left residues, and livestock excrement active carbon, livestock excrement carbon and fuel gas formed by carrying out splitting decomposition on livestock excrement mixtures are obtained after dry distillation is carried out; S2, carrying out dual coarse filtering, wherein the waste water in the waster water pond is pumped by a water pump through a pipe valve into a front coarse filter element and a back coarse filter element to be coarsely filtered; S3, carrying out carbon filtering and fine filtering, wherein the filter liquor obtained after dual coarse filtering flows into a carbon filter element and a fine filter element for carbon filtering and fine filtering; S4, carrying out ultra-filtering, wherein the filter liquor obtained after carbon filtering and fine filtering flows into an ultra-filtering device for ultra-filtering, and the filter liquor obtained after ultra-filtering flows into a middle water tank; S5, carrying out standing, and discharging liquid; S6, carrying out low-pressure and high-pressure nano-filtering; S7, carrying out back washing, wherein back washing water flows into the middle water tank.

The invention refers to light catalyst made up from natural rutile and the application in decomposing waster water which comprises halogenated organic compound. The rutile is crushed to that the radius is 70í½80ºÞm, 10í½20ºÞm. The application steps are: blends the water and the catalyst with proportion of 1000:1; blows air into the waster water pool to make the water blend with the catalyst evenly; carries on decomposition reaction by radiating the waste water with mercury lamp whose wavelength is less than 380 nano; it stops when the thickness of the water reach to the standard, the upper clean water is discharged, and supplies the catalyst, and continue to decompose the new waste water.

The invention provides a technology for treating desulfurization waste water. The technology comprises steps as follows: 1) the desulfurization waste water is introduced into a reaction tank, and sodium hypochlorite and hydrochloric acid are added with stirring; 2) desulfurization waste water treated in Step 1) is sent into a first-stage reaction tank; 3) desulfurization waste water subjected to reaction in Step 2) is sent into a second-stage reaction tank; 4) desulfurization waste water treated in Step 3) is sent into a third-stage reaction tank, flue gas of 30-100Nm<3>/h is introduced into the third-stage reaction tank with stirring, precipitate is produced, and a clear liquid is sent to a waste water pool for storage through a delivery pipeline. According to the technology, treatment steps are reasonably designed, a flocculant and a chelating agent are added, fluoride and suspended solids in the desulfurization waste water are agglomerated and precipitated, the suspended solids and the precipitate are discharged through gravitational separation, the treatment efficiency is high, the production cost is low, the occupied area is small, and treated waste water cannot cause pollution and is environment-friendly.

The invention discloses a device and method used for improving the heat value of waste put into a furnace of a household waste incineration plant. The device comprises a waste pond used for containinghousehold waste and performing water draining on the household waste, a guiding and discharging pipe used for discharging leachate in the waste pond, an incinerator used for incinerating the waste after water draining and a grab bucket hoist used for laying the waste in the waste pond or conveying the waste after water draining to the incinerator; and a combustible water draining cushion layer for performing water draining on the household waste is arranged in the waste pond. According to the device and method used for improving the heat value of the waste put into the furnace of the household waste incineration plant, the combustible water draining cushion layer is adopted to perform water draining on the household waste, the leachate which is drained out is filtered by a water guiding filtering grate and is discharged out of the guiding and discharging pipe, on one hand, the process is simple and easy to operate, the water draining effect of the household waste can be improved, it is avoided that because water is not drained out in time, the water content of the waste put into the furnace is high, the heat value of the waste put into the incinerator can be effectively improved,and the incineration work condition is improved.

The invention relates to a trickle-bed catalytic oxidization reactor, composed of waste water tank, premixing reactor, reactor, gas-liquid separator, condenser, oxygenated part and temperature-control part, which are connected together by pipelines and valves, where the reactor adopts segment heating and temperature control to ensure the reaction at the isothermy. The reactor is set with side sampling mouth able to collect the samples in different positions of the reactor, and has backflushing part able to regularly wash the catalyst in the reactor, effectively the salt stain problem always occurring in the course of wet-oxidizing actual high-concentration organic industrial waste water. It can be used to research the law of effect of technical operating conditions on the catalytic wet-oxidization reaction course of high-concentration, difficult- degradation, poisonous and harmful organic waste water discharged by the industries such as chemical industry, medicine industry and pesticide industry, has a very important significance in further enlarging the application field and range of wet oxidization and has good market prospect.

A biopharmaceutical wastewater treatment system and method are disclosed. According to a biopharmaceutical wastewater treatment process, treatment tanks including an adjusting tank, a hydrolysis acidification tank, a first aeration tank, a second aeration tank, a sedimentation tank, an MBR tank, a membrane cleaning tank, a sludge tank and a high-concentration wastewater tank are arranged in order.The process includes following steps: transferring wastewater into the adjusting tank; transferring the wastewater in the adjusting tank into the hydrolysis acidification tank for acidification and decomposition; after the wastewater is reacted in the hydrolysis acidification tank, feeding the wastewater into the first aeration tank and the second aeration tank in order; then feeding the wastewater into the sedimentation tank to separate liquid supernatant and sludge through sedimentation, and feeding the separated liquid supernatant into the MBR tank; subjecting the liquid supernatant to blast aeration, filtration and exchange in the MBR tank to allow a product to reach a discharging standard; and recovering or discharging the water meeting the discharging standard. Biopharmaceutical wastewater can be effectively treated by the method to allow contents of COD, ammonia nitrogen and total phosphorous to meet the discharging standard, the cost is saved and service lifetime is long.

The invention discloses a method for utilizing methanogenesis anaerobic bacterial flora to treat paper-making waste water. The method includes the steps that sediment at the bottom of a straw pulp paper-making waste water pool is added to methane enrichment media for enrichment and index detection to obtain the methanogenesis anaerobic bacterial flora suitable for treating the paper-making waste water; then, the paper-making waste water, the methanogenesis anaerobic bacterial flora and anaerobic sludge are mixed and added to an upflow anaerobic reactor (UASB), and therefore the paper-making waste paper is treated. The methanogenesis anaerobic bacterial flora can directly treat the paper-making waste paper, can reduce pH of the waste water, and can further utilize organic matter in the waste water to generate marsh gas. The method is used as a primary treatment method for treating the paper-making waste water and provides the beneficial foundation for follow-up and further treatment of the paper-making waste water, therefore, cost is reduced, the recovery rate is increased, secondary pollution is reduced, obvious economic benefits and social benefits are achieved in the paper-making waste water treatment aspect, and the great application prospect is possessed.