116results about How to "Reduce suspended solids" patented technology

The invention relates to a method for treating container washing wastewater, comprising the pretreatment, physical and chemical treatment, biochemical treatment and advanced treatment, wherein the pretreatment comprises the step of filtering suspended matter and oil slick out by an oil separation tank and a collected water regulating reservoir so as to homogenize water quality and water quantity; the physical and chemical treatment comprises the step of removing oil substances and COD by an air flotation device; the biochemical treatment comprises the step of removing hazardous and noxious substances by an AF anaerobic filter chamber and an SBR reaction tank; and the advanced treatment comprises the steps of degrading organic matters and sterilizing by a moving bed biomembrane reactor and an ozone catalyzing oxidation pond, wherein the treated wastewater serves as washing water after reaching normal water reuse standards. The invention not only treats the container washing wastewater containing oil, poisonous substances and organic hazardous chemicals into clear water meeting the national discharging standards and discharging standards in Tianjin, but also reduces the content of the suspended matters and oils, and saves water resources because the clear water after being treated can serve as the reuse clear water.

The invention discloses a campus rainwater ecological cleaning integrated-processing method and an ecological cleaning integration system. The method comprises the following steps: 1) establishing an integration processing system for processing campus rainwater in a campus in advance; 2) selecting a proper processing method according to ecological purification conditions of different water bodies in the campus; and 3) finally collecting rainwater processed in the step 2) to a landscape water body in the campus, or discharging into a river in the campus, or collecting into the underground water layer of the campus. The system comprises an undercurrent type artificial wetland system for processing campus initial-stage rainfall runoff, a shoreland-area closure system for processing campus storm runoff, an ecological floating bed-aeration plug-flow system for processing campus natural revetment river water body, an artificial waterweed-micropore aeration system for processing campus hard revetment river water body, and a biomanipulation-fountain aeration system for processing campus enclosed pond water body. The beneficial effects comprise that the purification effect is good, the cost is low, the resource utilization rate is high and the purification effect is lasting.

An advanced water treatment method processes a continuous flow of water in a sequence of stages including pre-filtering [200] to remove solids, conditioning [202] to adjust pH, blending [210] with a recycled dense microalgae culture, and passing the resulting mixture through an enclosed, environmentally-controlled photobioreactor [212] where nutrients, PCB's, trace metals and other pollutants and regulated compounds are taken up by the algae. The flow from the PBR is separated using cross-flow filtration [222] to produce a treated water flow and a dense microalgae flow that is recycled to the blending stage [210] upstream. Thus, whereas the algae is recycled, the water entering the system is treated by flowing sequentially through the stages of the system, without any recycling or repetition of treatment stages.

The invention provides a microbial preparation for purifying sewage and deodorizing garbage. The microbial preparation is a liquid culture which comprises the following microorganisms: saccharomyces cerevisiae, hansenula polymorpha, rhodopseudomonas palustris, bacillus licheniformis, bacillus subtilis, bacillus megaterium, streptomyces microflavus, lactobacillus acidophilus, lactobacillus plantarum and streptococcus thermophilus. A liquid culturing medium comprises molasses, sodium chloride and urea. The number of viable bacteria in the microbial preparation is more than 1*1010cfu/ml. The microbial preparation can be added into the sewage or sprayed into a garbage transfer station, a garbage landfill and a farm to improve the environment significantly.

The invention relates to a method for treating and recycling circulating water and sewage, which comprises the following steps of: adding an oxidative bactericide and a catalyst into the sewage for chemical reaction, performing flocculation precipitation on reacted wastewater, adding wastewater subjected to flocculation precipitation into a membrane system for treating, and recycling recycled water subjected to membrane treatment to a circulating water system. Compared with the prior art, the method can effectively reduce the chemical oxygen demand (COD) of the wastewater, can reduce the content of bacteria in the wastewater, and meets the requirement of recycling the treated wastewater to the circulating water system.

The invention relates to an electrochemical combined coking wastewater deep treatment process and equipment thereof. The process comprises the following steps that wastewater is led into a coagulating settling pond, so that COD (Chemical Oxygen Demand) and suspended matters in the wastewater are reduced; the wastewater is led into a multi-media filter to be further filtered and then is led into a three-dimensional electrode reactor of a fluidized bed to carry out electrocatalytic oxidation; then the wastewater is led into an MBR (Membrane Biological Reactor), and the wastewater from the MBR can be directly used as low-level water; and also, the wastewater from the MBR can continue to depth treatment, the wastewater enters a cartridge filter so that the suspended matters and active sludge in the wastewater are removed, finally the wastewater enters an electric adsorption device to desalt, the produced water after treatment can be used as high-level water. The equipment is mainly composed of the coagulating settling pond, the multi-media filter, the three-dimensional electrode reactor of the fluidized bed, the MBR, the cartridge filter and the electric adsorption device. The process and the equipment have a reasonable design, the problems in the coking wastewater deep treatment and recycling are solved, and the process and the equipment have a stronger engineering application value. The produced water can meet the requirements of different levels of water.

The invention provides a filtering process of copper electrolytic supernatant, in which the purpose is achieved in this way that according to the filtering process of copper electrolytic supernatant, the electrolyte, flowing back to a low tank from a electrolytic cell through a circulating tube, is then sent to a high tank through a circulating pump. Afterwards, the electrolyte is in gravity flow into the electrolytic cell again from the high tank, and the electrolytic cell bottom is provided with a valve for the connection with a supernatant tube communicated to a supernatant receiving tank. After sent to a filter press for filtering through a filtering pump, the electrolyte returns to the high tank of the electrolyte circulating system again, entering the circulating system to recycle the supernatant separately. The electrolyte then returns to the electrolyte circulating system after the filtering, so that the suspended substances in the electrolyte is greatly reduced and dropped to below 10mg/L from the original 20-100mg/L. Therefore, the quality of cathode copper is ensured.

Provided is an oscillatory type sewage sedimentation basin, which utilizes a tilting system to tilt a movable basin, so as to generate gradient tangential deformation and resonance on raw water, promote a flocculation reaction and improve sewage treating effect, and an operation method thereof. The movable sedimentation basin is jointed with a pedestal hinge and can tilt around the hinge under a tilting operation of the tilting system. When sewage reaches a destabilization critical state, the tilting mechanism is started to tilt the movable basin to generate gradient tangential deformation on the raw water and promote the flocculation reaction. A basin tilting period is controlled to generate resonance oscillation on the raw water. The resonance promotes fully conduction of the flocculation reaction, so as to purify the raw water repeatedly, separate the settlement thoroughly and reduce suspensions. The settlement progress consumes a short time and energy, has good effect and low costs and is green, environment-friendly and easily operated.

The invention discloses a method for clarifying cane juice by combining air floatation purification and thermal floatation purification. The method comprises the following steps of: preheating mixed juice to 45-55 DEG C, conveying into a reactor, and adding lime for adjusting the pH value to 5.6-6.6, wherein the adding amount of the lime is 0.02-0.05 percent of the weight of the mixed juice; and charging fine uniform air bubbles by using a bubble maker, adding a flocculating agent, mixing uniformly, adding into a thermal tubular purifier, performing air floatation purification in the thermal tubular purifier to obtain primary clear juice, extracting the primary clear juice into a stirrer, adding a clarifying agent and a flocculating agent simultaneously, and feeding into the thermal tubular purifier through a circulating pump for performing thermal floatation purification to separate secondary clear juice and floating slag out. An air floatation purification technology and a thermal floatation purification technology are combined, so that the clarifying efficiency and effect of the clarifying agent are increased, the quality of a white sugar product is improved simultaneously, and environmental pollution caused by lime sludge is lowered.

The invention relates to the field of environment protection and in particular relates to water pollution treatment equipment for a river channel. The water pollution treatment equipment comprises a collection mechanism, a lifting mechanism, a waste material collection mechanism, a purification mechanism, a medicine feeding mechanism, a floating ring, a driving mechanism, a movement mechanism anda remote controller; the collection mechanism for collecting solid wastes is communicated with the lifting mechanism for lifting the solid wastes and the waste material collection mechanism is used for conveniently collecting the solid wastes; the purification mechanism is used for purifying a water body; the medicine feeding mechanism is for feeding a purification medicament and the driving mechanism is used for driving the floating ring to move; the movement mechanism is convenient for a whole body to move; the remote controller is used for controlling the whole body to be propelled in the water. According to the water pollution treatment equipment provided by the invention, manpower is saved and the utilization is convenient; meanwhile, an operator does not need to enter the water and the safety performance is high; the collection of the solid wastes on the surface of the water body is effectively finished and filtering and purification of the water body are finished; when a purification device moves, a medicament outlet is exposed in a blade rotating manner, so that a medicament flows out to realize the feeding of the medicament and the feeding is uniform and comprehensive.

The invention discloses a deep treatment method of synthetic rubber wastewater. The method comprises: a) treating the synthetic rubber wastewater subjected to two-stage biochemical treatment by a multi-media filter; b) treating the discharged water of step a) with a fixed-bed three-dimensional electrode electrolyzing device; c) treating the discharged water of step b) with a precision filter; d) treating the discharged water of step c) with an ultrafiltration system employing total filtration; e) treating the discharged water of step d) with a security filter; and f) treating the discharged water of step e) with a reverse osmosis membrane system. By adopting the process provided in the invention to treat wastewater, the organic matter content and suspended matters in the wastewater can be effectively reduced, and the discharged water can have excellent quality. Membrane fouling can be effectively reduced so as to make the whole system stably operate for a long time, thus reaching the dual purposes of water saving and emission reduction. Also, the environmental benefits, economic benefits and social benefits of enterprises are enhanced.

The invention discloses an urban sewage treatment agent and a sewage treatment technology. The urban sewage treatment agent comprises the following raw materials: polyaluminum chloride, polyferric sulfate, sodium silicate, active carbon, zeolite powder, an antifoaming agent, a surfactant and water. The urban sewage treatment agent of the invention has wide sources of the raw materials. Active carbon has a strong adsorption effect and can effectively adsorb inorganic salt in a water body. polyaluminum chloride and polyferric sulfate have a strong flocculation effect, and can significantly reduce suspended solids and small granules in sewage. The preparation technology is simple, and the application method is simple. The urban sewage treatment agent has good adsorption, flocculation and precipitation effects, has high sewage treatment efficiency, and is a comprehensive sewage treatment medicament with very stable performance. The sewage treatment technology is simple and efficient, has an excellent removal effect on total nitrogen, total phosphorus, ammonia nitrogen, COD, BOD and SS in water, and will not cause secondary pollution.

The invention relates to a technology and device for separating and melting sulfur, and belongs to the technical field of separating and melting of chemical industry production. The technology in the technical scheme includes the steps that after a desulfurizing solution is subjected to regeneration and discharged out of a regeneration trough with sulfur foam, the desulfurizing solution and the sulfur foam are separated through a desulfurizing pressure filter, and separated clear liquid is directly fed to a system to be recycled through a desulfurizing pump; the separated sulfur foam is circularly stirred through a solution from a sulfur melting kettle to enter the sulfur melting kettle for sulfur melting, and a solution for sulfur melting and a solution for the production system are thoroughly separated. According to the technology and device, the content of solid matter of the clear liquid obtained after filtering of the desulfurizing pressure filter is lower than 60 ppm, stable production of the system is facilitated after the clear liquid is fed back to the production system, filtered-out sulfur paste is re-mixed to enter the sulfur melting kettle, energy consumption is saved, and compared with the traditional technology, energy consumption is reduced by 85% or above; the working environment is clean and free of pollution; the device is simple and convenient to install and maintain; the automatic degree of the system is high, the labor intensity is low, labor cost is saved, and continuous and stable operation of the system is facilitated.

The invention discloses a method for performing water purification plant advanced treatment by using a submerged ultrafiltration membrane. The method comprises five steps of adding powdered activated carbon, performing carbon-water premixing, performing activated carbon adsorption and carbon-water separation, performing carbon slurry settling concentration for dehydration and regenerating the powdered activated carbon. The fed water of waterworks is pumped into a carbon-water premixing tank and is uniformly and fully mixed with carbon slurry refluxed out of a submerged ultrafiltration membrane separation tank; then the mixture is put into the submerged ultrafiltration membrane separation tank for performing membrane separation of carbon and water, and a small part of outlet water is reused and is subjected to membrane back flushing; and the carbon slurry in a carbon-water premixing tank is discharged into a concentration tank for concentration, and then is delivered into pressure filtration equipment for dehydration and recovery, and the recovered activated carbon is treated by a baking regeneration activation process for recycling. According to the method disclosed by the invention, the adsorbing effect of the powdered activated carbon on micromolecular organic matters is well combined with a sieving effect of the ultrafiltration membrane on pathogenic microorganism including macromolecular organic matters and bacteria, so that the removal rate of the organic matters is greatly improved, and meanwhile, the powdered activated carbon can be reused after regeneration.

The patent relates to the field of wastewater treatment and specifically discloses a treatment process of livestock and poultry breeding wastewater. The method of the treatment process is simple in operation, the occupied area of every device is small, and all the devices are connected to form an integrated treatment device of the livestock and poultry breeding wastewater according to treatment processes of the livestock and poultry breeding wastewater; meanwhile, ammonia nitrogen in the livestock and poultry breeding wastewater can be recycled as a raw material of a nitrogen-containing product, and all solid waste and sludge at a biochemical section are made into an organic bio-fertilizer used as an ecological fertilizer of crops through harmless biological fermentation. According to thescheme, COD (chemical oxygen demand) in the livestock and poultry breeding wastewater can be recycled, and the livestock and poultry breeding wastewater is treated, so that the livestock and poultry breeding wastewater can reach a discharge standard.

The present invention provides a membrane-technology medical wastewater treatment method and a membrane-technology medical wastewater treatment apparatus with ultraviolet ray disinfection, and belongs to the technical field of wastewater treatment. The method solves technical problems that sludge is easily produced in existing wastewater treatment, a wastewaster treatment apparatus has a large occupied area, and the like. The medical wastewater treatment method provided by the present invention comprises: a. pretreatment: putting the wastewater into a decomposition tank, and using an anaerobic fermentation method to treat the wastewater; b. aerobic treatment: putting the wastewater treated in the step a into an aeration tank, and using an aeration method to enable full contact between air and the wastewater; c. membrane module treatment: putting the wastewater treated in the step b into a membrane module treatment tank, using a membrane-bioreactor to filter and intercept suspended substances in the wastewater, and performing degradation on organic substances and oxidizable substances in the wastewater; and d. ultraviolet disinfection, emission, and the like. The present invention further comprises an apparatus for implementing the method. According to the present invention, the medical wastewater treatment method is good in water discharge effect, the suspended substances are smaller than 10 mg/L, ultraviolet sterilization is utilized, no secondary pollution is produced, and therefore, the method is safe in operation, reliable, and low in production, operation and maintenance cost.

The invention discloses a method for promoting the growth of Habrotrocha sp by using honey residue, which belongs to the technical field of water pollution control. The aim of effectively promoting the growth of the Habrotrocha sp is achieved by adding the honey residue rich in active substances such as flavonoid, terpenes and so on. The method comprises the following steps: the honey residue is added into a Habrotrocha sp culture fluid prepared by CaCO3, a phosphate buffer solution and distilled water, and staphylococcus is taken as food of the Habrotrocha sp to cultivate the Habrotrocha sp in an illumination cultivating box with the temperature of 25 DEG C. The method selects food production waste, namely the honey residue as an additive to promote the growth of the Habrotrocha sp, which has remarkable growth promotion effect on the Habrotrocha sp, can ensure that the population growth rate reaches 0.87d<-1> in an increased logarithmic phase of the Habrotrocha sp, and is far higher than 0.55d<-1> when the honey residue is not added on one hand, can ensure that the honey residue is turned into valuables, realize the cyclic utilization of resources, and also ensure that the method is more economical when practically applied to sewage treatment in the future on the other hand.

The invention provides a domestic sewage treatment agent which comprises the following raw materials in parts by weight: 30-50 parts of rare-earth modified vermiculite, 20-40 parts of bentonite, 10-20parts of attapulgite, 2-6 parts of ferric salt, 5-10 parts of aluminum salt, 10-20 parts of aluminum polychloride, 10-20 parts of polyferric sulfate, 8-16 parts of activated carbon, 5-10 parts of hydrogen peroxide and 50-100 parts of water. The domestic sewage treatment agent provided by the invention can achieve a high removal rate on total nitrogen, total phosphorus, ammonia nitrogen, COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and SS in water in a short time, does not cause secondary pollution, and has the functions of disinfection, bacterium inhibition and flocculation.

The invention relates to a reaction device suitable for preparing hydrogen fluoride from calcium fluoride. The reaction device comprises a reactor and a heat energy device, wherein the reactor is of fully sealed vertical type hollow structure; a first material inlet and a gas outlet are formed in the top part of the reactor; a material output outlet is formed in the bottom part of the reactor; thereactor is also internally provided with a stirrer and a material bearing device; the heat energy device is used for providing heat energy for the material bearing device; the heat energy device comprises a thermal medium input pipe and a thermal medium output pipe; a heat transfer layer of a sealed structure is arranged on the bottom surface of the material bearing device; the thermal medium input pipe and the thermal medium output pipe are respectively communicated with the heat transfer layer. According to the reaction device disclosed by the invention, the heat transfer area is larger, and a heat transfer effect is better; energy consumption is reduced; power consumption is reduced under the same productivity; the reaction device is suitable for producing the hydrogen fluoride from calcium fluoride fine powder; flying dust cannot be generated while entering the reactor, a hydrogen fluoride gas is discharged out of the reactor after passing through wet powder, and dust cannot be taken away.

The invention discloses a coupling type coking wastewater advanced treatment process and a coupling type coking wastewater advanced treatment device. The process is as follows: wastewater is introduced into a mixing-sinking tank, so that COD (Chemical Oxygen Demand) and suspended matters in the wastewater can be reduced, secondly, the wastewater is introduced into a multi-media filter to be further filtered, then the filtered wastewater is introduced into a three-dimensional electrode reactor of a fluidized bed to be subjected to electrocatalytic oxidation, and then is introduced into an MBR (Membrane Bio-Reactor), then the wastewater discharged from the MBR can be directly used as low-level water, and also the wastewater can continue to be subjected to the advanced treatment, and enters a cartridge filter, so that the suspended matters and activated sludge in the wastewater can be removed, and finally the wastewater enters a reverse osmosis device, and the treated produced water can be in the high-level. The device mainly comprises the mixing-sinking tank, the multi-media filter, the three-dimensional electrode reactor of the fluidized bed, the MBR, the cartridge filter and the reverse osmosis device. According to the process and the device, the design is reasonable, the difficulties of the advanced treatment and the reuse of coking wastewater can be solved, the engineering application value is extremely strong, and the produced water can meet the requirement of different levels of water.

The invention relates to the field of wastewater treatment, and particularly discloses a method for recovering ammonia nitrogen in livestock and poultry breeding wastewater. An exchanger and an ammonia nitrogen analysis solution in step c), step d) and step e) in the method can sufficiently recover most of ammonia nitrogen in the livestock and poultry breeding wastewater, and the ammonia nitrogen recovered in the exchanger and the ammonia nitrogen analysis solution can be produced into products as needed, such as ammonium chloride, ammonium sulfate and the like, and can also be used as a nitrogen source for fermentation of agricultural straws. Moreover, after most of the ammonia nitrogen in the livestock and poultry breeding wastewater is recovered, a ratio of C/N in the livestock and poultry breeding wastewater is increased, so as to facilitate biochemical treatment of the livestock and poultry breeding wastewater in a later period, so that the treatment cost of the livestock and poultry breeding wastewater can be effectively reduced. The scheme can reduce the recovery cost of the ammonia nitrogen in the livestock and poultry breeding wastewater.

The invention discloses a surface flow-vertical subsurface flow artificial wetland treatment process, and belongs to the technical field of environmental protection. The construction of the artificialwetland comprises the following steps: 1) selecting seedlings of artificial wetland plant species, firstly putting the seedlings into water to be cultured, then transferring the seedlings to NO3 <->/NH4 <+> nutrient solutions with different concentrations to be cultured, and screening out plants partial to NH4 < + > and plants partial to NO3 <->; 2) planting the plants partial to NH4 < + > screened in the step 1) into a surface flow artificial wetland, and planting the plants partial to the NO3 <-> screened in the step 1) into a vertical subsurface flow artificial wetland; and 3) connecting the surface flow artificial wetland and the vertical subsurface flow artificial wetland constructed in the step 2) in series, the surface flow artificial wetland is arranged at the water inlet end of the system, and the vertical subsurface flow artificial wetland is arranged at the water outlet end of the system. According to the method, directional screening is carried out on the plants accordingto the oxygen dissolving characteristics and the structure of the artificial wetlands, and the sewage comprehensive treatment efficiency and the ammonia nitrogen removal efficiency are both obvious.

The invention discloses a method for removing 2-mercaptopyridine-N-oxide in wastewater and recycling of the 2-mercaptopyridine-N-oxide. The method comprises the following steps: (1) mixing the wastewater containing the 2-mercaptopyridine-N-oxide and an organic solvent at a room temperature according to a ratio of (7:1) to (12:1); after stirring for 1 to 2 hours, standing for 0.5 to 1 hour; layering and separating and removing a wastewater layer; determining that the content of the 2-mercaptopyridine-N-oxide in the separated and removed wastewater layer is less than 0.05 percent; (2) at the room temperature, adding de-ionized water into the organic solvent layered by the step (1); stirring and dropwise adding a sodium hydroxide solution with the mass concentration of 30 percent until the pH value of the mixed solution is 9 to 10; continually stirring for 0.5 to 1 hour; then standing for 0.5 to 1 hour and layering. With the adoption of the method disclosed by the invention, the content of the 2-mercaptopyridine-N-oxide in the wastewater is effectively reduced, the chroma and suspended matters of the wastewater are reduced, and convenience for treating three wastes is brought.