38results about How to "Excellent and stable effluent quality" patented technology

The invention discloses a waste water treatment process which comprises the following steps that 1) waste water enters a primary sedimentation tank through a grid to remove suspended matters; 2) the waste water overflows from the primary sedimentation tank into a regulating tank after the suspended matters are removed, and lime milk is added to adjust the pH value of the waste water to be neutral; 3) the waste water of which the pH value is adjusted to be neutral naturally flows into a neutral aeration tank and is mixed with compressed air in the aeration tank, and Fe<2+> in the waste water is converted to Fe<3+>; 4) the waste water in the aeration tank is injected to a flocculation reaction tank, polyacrylamide flocculant is added to the waste water, and then the waste water is pumped to an inclined tube sedimentation tank; and 5) supernate of the waste water in the inclined tube sedimentation tank overflows into a contact oxidation tank and is mixed with the compressed air filled into the contact oxidation tank, organic matters in the waste water are subjected to oxygenolysis, and the waste water in the contact oxidation tank is deposited through a sedimentation tank and then overflows into a clean water tank. After being treated by the waste water treatment process, the waste water can reach the standard of Integrated Waste Water Discharge Standard (GB 8978-1996); and in addition, the operating cost of a waste water treatment system is lower, and the waste water treatment volume is large .

The invention discloses a kitchen wastewater treatment method which comprises the following steps: 1, chemical phosphorus removal is performed on kitchen wastewater flowing out from an IC (internal circulation) reactor; 2, after passing through a water quality equalization tank, the wastewater enters a CASS (Cyclic Activated Sludge System) to react, so that soluble substrates, organisms, phosphorus and an synchronous nitrification and denitrification effect are removed; 3, after the wastewater flows into an intermediate water tank to be subjected to volume regulation, the wastewater enters a Fenton oxidation reactor and an iron-carbon micro-electrolysis device so as to improve biodegradability of the wastewater; 4, after passing through the Fenton oxidation reactor and the iron-carbon micro-electrolysis device, the wastewater directly enters a hydrolysis acidification pool from the intermediate water tank, suspended matter and iron ions are removed and sludge is separated, hydrolyzed and acidified; 5, the wastewater is subjected to aerated oxidation to remove COD (Chemical Oxygen Demand) content; 6, the wastewater enters an MBR (Meane Biological Reactor) pool and hardly degradable substances are degraded, so that the drained wastewater reaches the take-over standard of a sewage treatment plant; 7, after the sludge discharged from a chemical phosphorus removal pool and the MBR pool is processed by a precision solid-liquid separator, solids are prepared into an organic fertilizer and filter-pressing liquid enters the water quality equalization tank.

The invention discloses a method and a device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater. The main process includes coagulation efficient air floatation and small-aperture ultrafiltration system which comprises a water collection tank (1), an efficient air floating system (2), a small-aperture ultrafiltration system (3), a water recycling tank (4) and a concentrated water tank (5). The efficient air floating system comprises a coagulation portion and an air floatation portion. The method and the device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater has the advantages that most CODCr (chemical oxygen demand), suspended matters and fibers can be removed by means of the coagulation efficient air floatation, the small-aperture spiral wound ultrafiltration membrane system using a linear water inlet runner net can effectively control membrane contamination, and the membrane molecular weight cutoff is 3000-10000Da. Quality of discharged water of the whole system is high and stable, turbidity of the discharged water is smaller than or equal to 3NTU (number of transfer units), the suspended matters can be removed completely, the discharged water is odorless in long-time standing, concentrated solution can be used as slurry to be reused after further treatment, and permeate liquid can be directly used as production circulating water for reuse. The method and the device for using small-aperture spiral wound ultrafiltration membranes to treat papermaking wastewater are used for treatment and recycling of papermaking wastewater, and worthy of wide popularization and application to the market.

The invention provides a membrane distillation bioreactor device and a method for treating wastewater or waste liquid by using the device. In the membrane distillation bioreactor device, membrane distillation technology and biological degradation technology are combined, a hydrophobic microporous membrane component is immersed in a biological reactor, latent heat resources such as solar energy andwaste heat are used to heat wastewater to be treated to produce a steam pressure difference between two sides of the membrane to recover water resource, operation energy consumption is saved greatly,and operation cost is saved. A high temperature condition is favorable for improvement in the activity of microorganisms and the biological degradation speed. In the process, a membrane separation process is free from the influences of biological degradation degree, system operation starting requires short time, and effluent is stable and high in quality and meets the standards for reverse osmosis water. The device has the outstanding advantages of simple structure, simple process, low operation energy consumption, small floor area occupation, high biological degradation speed and the like and has a great practical value for the improvement and development of high organic wastewater treatment and high-purity water preparation technology.

The invention discloses a sewage treatment system of an MBR (membrane and bioreactor) membrane. The sewage treatment system comprises a pretreatment system and a sewage treatment system body. The sewage treatment system is characterized by comprising a biochemical aeration tank (1), an MBR membrane ultrasonic cleaning pool (2), an ultraviolet disinfection device (3) and a clean-water reservoir (4), which are orderly connected in series through a pipeline, wherein the pretreatment system is communicated with the biochemical aeration tank (1) through the pipeline. By adopting the sewage treatment system of the MBR membrane disclosed by the invention, the sanitary wastewater and oil wastewater can be synchronously processed; a lot of resources are saved; the sewage treatment system is easy to clean, thorough to sterilize, less in residual sludge output, small in floor area, convenient to operate and manage, easy to achieve automatic control and the like, also has excellent and stable effluent quality, and is not limited by the setting occasion.

The invention discloses an A20+MBR processing device, belongs to the field of environmental protection, and particularly relates to the field of wastewater biotreatment and reuse. The A20+MBR processing device includes an water inlet, an anaerobic pool, an anoxic pool, an aerobic pool, a membrane pool, an MBR membrane component, a spherical filler, an MBBR filler, a water outlet, an aeration head, an aeration branch pipe, an aeration main pipe, a gas adjusting valve, aeration equipment, a sludge reflux pipe, a nitrifying liquid reflux pipe, a biological flow bed; the MBR membrane component is installed in the membrane pool; the nitrifying liquid reflux pipe is installed between the upper portion of the aerobic pool and the upper portion of the anoxic pool; the sludge reflux pipe is installed between the bottom of the membrane pool and the bottom of the anaerobic pool. The A20+MBR processing device has the advantages that the efficient solid liquid separation is achieved; the effluent water quality is good and stable; the remaining sludge amount is small; the covering area is small; a secondary settling tank is not needed; process equipment is concentrated; the device can be widely used in the field of urban and rural sewage treatment.

The invention discloses a method and a device for processing high-concentration undegradable waste water by using a jet flow membrane bioreactor (MBR). The main process is performed in a hybrid anaerobic reactor, an intermittent tank, the jet flow MBR, a small-aperture ultrafiltration membrane system and a multiple-effect oxidation system. The device comprises a regulating tank, the hybrid anaerobic reactor, the intermittent tank, the jet flow MBR, the small-aperture ultrafiltration membrane system and the multiple-effect oxidation system in turn. The method and the device have the advantages that: the oxidation effects of the hybrid anaerobic reactor and the intermittent tank fully improve the biochemical property of the waste water; organics are effectively removed from the jet flow MBR and the membrane pollution is effectively controlled; operation energy consumption is low and noises are low; the cut-off molecular weight of a small-aperture ultrafiltration membrane in the small-aperture ultrafiltration membrane system is 1,000 to 30,000 dalton, so that the chemical oxygen demand (COD) and the chroma of the micromolecular organics can be further removed; and the effluent of the whole system has a high quality and reaches the first-grade A discharge standards of the industry, and the COD of the effluent is less than or equal to 50mg/L, so that the high-concentration undegredable waste water is treated effectively and discharged after meeting standards.

The invention relates to a treatment method of sludge drying generated sewage. The method includes: the sewage generated in a sludge drying process passes through a grating ditch to filter out bulk impurities and enters a raw water hoisting shaft, the sewage is pumped into a pH adjusting pool and mixed with an alkali solution to undergo a neutralization reaction, and then enters a water quality regulating pool, which oxygenates the sewage in advance while regulating the water amount; the sewage then enters a floating oil machine to perform air floatation deoiling, and then enters a contact oxidation pool to undergo aerobic biochemical treatment; the sewage then enters a sedimentation pool from its bottom, the gravity sedimentated sewage flows out from the top and enters a denitrification pool, and the sedimentated sludge is transferred to a sludge storage pool; and the denitrified sewage enters an MBR reactor to further remove oxidizable substances and part of ammonia nitrogen, other sludge is transferred into the sludge storage pool, the sewage enters an ozone contact jar to undergo disinfection and oxidation decoloration, and the obtained clear water enters a clear water pool for storage. The invention has the advantages of: automatic control, convenient operation and management; small equipment floor space, and flexible system installation and construction; and strong adaptability.

The invention provides an integrated A/O/MBBR (Moving Bed Biofilm Reactor) reactor with denitriding function. The integrated A/O/MBBR reactor comprises a circular barrel body, a water inlet distributing device, suspension fillers, a submersible centrifugal aerator, suspension fillers and an air inlet pipeline; the circular barrel body is separated into an anoxic area, an aerobic area, a flow guide area, a mud-water separating area and a water collecting area by a plurality of concentric cylindrical partition plates; the water inlet distribution device is arranged at the upper part of the anoxic area; the suspension fillers are arranged in the middle part of the anoxic area; the submersible centrifugal aerator is arranged at the bottom part of the anoxic area; the suspension fillers are arranged in the middle part of the aerobic area; and the air inlet pipeline is connected with an air inlet of the submersible centrifugal aerator.

The invention discloses a deep waste water treatment system, and concretely provides a sewage treatment system. The sewage treatment system comprises a water inlet box, an ozone fluidized bed treatment unit and a biological membrane combined treatment unit, wherein the ozone fluidized bed treatment unit is connected with the water inlet box; the biological membrane combined treatment unit is connected with the water inlet box and the ozone fluidized bed treatment unit. Therefore the sewage treatment system has the advantages that the structure is simple and compact; the occupied area is small;the sludge expansion rate is low; the mass transfer efficiency is high; the outlet water has higher quality and stability; the film pollution can also be reduced; the energy consumption and the sewage treatment cost are reduced; in addition, the sewage treatment unit can be flexibly selected by the sewage treatment system according to the water quality of coming water; the operation is convenient; the adaptability is high.

The A20+MBR treatment method belongs to the field of environmental protection, especially the field of sewage filtration biological treatment and reuse; A20+MBR treated sewage enters the anaerobic pool through the water inlet, and the sewage is filtered through the biological fluidized bed in the anaerobic pool 2; anaerobic The pre-filtered sewage in the pool 2 enters the anoxic pool 3, and the sewage is filtered through the biological fluidized bed in the anoxic pool 3; Flow state bed filtration; the sewage filtered by the aerobic pool 4 enters the membrane pool 5, and the sewage is filtered by the MBR membrane module 6 in the membrane pool 5; the sewage filtered by the MBR membrane module 6 in the membrane pool 5 passes through under the action of negative pressure Water outlet 9 gets rid of. Realize high-efficiency solid-liquid separation, high-quality and stable effluent water quality; less residual sludge, small footprint, no need for secondary settling tanks, centralized process equipment; can be widely used in urban and rural sewage treatment fields.

The invention discloses a method and a device for treating high-salt content water by a hydro-power molecular membrane. The device orderly comprises a material liquid tank, a water circulating pump, a membrane tank, a condenser, a product water tank and a vacuum pump. The material liquid tank is provided with an electric heating system and a temperature sensor. The device and the method adopt a core technology of a hydro-power molecular membrane, realize excellent and stable product water quality and a high salt rejection rate reaching 99.99%, have good COD and color removal effects, reduce energy consumption, wherein power consumption is in a range of 3 to 6KWh/m<3>, prolong a hydro-power molecular membrane service life, greatly resist pollution, realize a high water production flux of 10 to 100L/m<2>*h, solve the problems of hydrophobic membrane aperture wetting and wire fracture in membrane distillation, and adopt heat sources such as industrial waste heat, underground heat, solar energy and the like so that high-efficiency and energy-saving high-salt content water treatment is realized.

The invention discloses an SBR (Sequencing Batch Reactor) activated sludge process for soybean lecithin production. The process comprises the following steps: performing pretreatment sludge fishing, pretreating floating oil, adjusting water quantity in an adjusting tank, homogenizing water quality, performing coagulation air floating treatment, performing acidification conditioning in a hydrolysisacidification tank, and performing aerobic treatment in an integral bioreactor. The process disclosed by the invention is concise in process, efficient in solid-liquid separation, excellent and stable in effluent quality, capable of removing ammonia nitrogen and refractory organic matters and overcoming defects that sludge expansion can be easily caused when a conventional activated sludge process is used, small in floor space, free of secondary sedimentation tank and centralized in process equipment.

The invention discloses an A2O2+MBR (Membrane Bioreactor) treatment device, belongs to the field of environmental protection and the field of treating and recycling of sewage. The A2O2+MBR treatment device comprises a water inlet, an anaerobic tank, an anoxic pond, a microaerobic pond, an aerobic tank, a membrane pool, spherical packing, MBRR (Moving Bed Biofilm Reactor) packing, a water outlet pipe, an aeration device, a sludge returning pipe, a nitrification liquid refluxing pipe and a self-priming pump, wherein biological filter beds are arranged in the anaerobic tank and the anoxic pond; the spherical packing is accommodated in the biological filter beds; the MBRR packing is accommodated in the microaerobic pond and the aerobic tank; an MBR membrane component is arranged in the membrane pool; by using a separating technology of the membrane, the concentration of activated sludge is greatly improved, and hydraulic retention time and sludge retention time of the activated sludge are respectively controlled; by high-efficiency solid-liquid separation, the water quality of effluent is stable, the amount of residual sludge is small, the occupied area is small, refractory organic compounds are removed, and the defect that traditional activated sludge is easy to expand is overcome. The A2O2+MBR treatment device can be widely applied to the field of sludge treatment.

The invention relates to the field of sewage treatment, in particular to an MBR (Membrane Bioreactor) sewage treatment system which comprises a regulating tank, an anoxic tank and an MBR membrane tank which are arranged in sequence, the sewage conveying pump can supply water to the adjusting tank; a grating, an aeration stirring device and a liquid level control device are arranged in the adjusting tank; the regulating tank is connected with the anoxic tank through a sewage lifting pump, a filler frame and a first aeration device are arranged in the anoxic tank, and filler is arranged on the filler frame; the anoxic tank and the MBR membrane tank are connected through a water inlet pump, a membrane assembly and a second aeration device are arranged in the MBR membrane tank, and the water outlet end of the membrane assembly is connected with a clean water pump. The method has the advantage that the defect that production sewage and domestic wastewater generated in the construction period of a power plant project pollute the environment and cause waste of water resources can be effectively overcome.

The invention discloses an acid wastewater treatment device utilizing a membrane technique. According to the acid wastewater treatment device, the technical problem that acid wastewater cannot be treated by virtue of a membrane material in the prior art is solved. The acid wastewater treatment device comprises a sewage treatment tank, wherein a membrane assembly unit is arranged in the sewage treatment tank, is used for filtering acid wastewater and comprises a pressure-bearing shell, a plurality of external pressure type membrane tubes are arranged in the pressure-bearing shell, a water inlet and a water outlet are respectively formed in two ends of the pressure-bearing shell, the external pressure type membrane tubes comprise support layers, and separation layers are arranged outside the support layers and are produced from multifunctional graphene/high molecular composite materials. According to the acid wastewater treatment device, the graphene/nanostructure multifunctional high molecular material separation layers adopted by the external pressure type membrane tubes have very strong corrosion resistance, acid-alkali resistance and mildew resistance and can be used for treating various acid wastewaters.

The invention provides a technological water discharge and recycling device for a tap water plant. The technological water discharge and recycling device for the tap water plant comprises a micro-filtering system, an ultra-filtering system and an automatic cleaning system, wherein the micro-filtering system comprises a raw water tank, a first electromagnetic valve, a micro-filtering component and a second electromagnetic valve; the ultra-filtering system comprises an ultra-filtering component, a third electromagnetic valve, a fourth electromagnetic valve, a water producing pump, a fifth electromagnetic valve and a clean water tank; and the automatic cleaning system comprises a backwashing water pump. The device disclosed by the invention can be used for solving the problem of 'cryptosporidium and Giardia cysts' in the tap water plant effectively, so that the quality of treated water reaches the sanitary standard requirement of domestic drinking water, and the recovery rate can reach more than 95%. The device disclosed by the invention has the advantages of high quality and stability of discharged water, small occupied area, intensive structures, simple construction operation, high anti-pollution capacity, convenience in installation and transportation, high automation degree and the like, and has good popularization and application prospects.

A method and a device of a high-efficient energy-saving hydropower molecular film. A core part comprises a heat exchanger, a heating heat-insulation groove, a hot water pump, a reaction tank, an aeration system, a water circulating pump, a condenser, a water-producing tank, and a vacuum pump; the invention adopts hydropower molecular film technology; the effluent quality is excellent and stable, and has good removing effect on COD and chroma; the hydropower molecular film has a long service life, and high contamination resistance; the heat exchanger saves system energy consumption by 30%-50%; the aeration system increases the system efficiency by 10%-30%; the water production flux is higher than 10 L/m2.h; The invention is applicable to the treatment of reverse osmosis concentrated water, volatile organic waste water, heavy metal containing waste water, and industrial waste water, the recovery of useful substances, the desalination of seawater or brackish water, and the like, and is a high-efficient energy-saving water treatment method and device.

The invention discloses a method for treating comprehensive sewage in a fine chemical industry park, and belongs to the technical field of sewage treatment environmental protection. The treatment method is a combined process of a plurality of units, and mainly comprises a front-section iron-carbon micro-electrolysis unit, a composite hydrolytic acidification unit, a composite biochemical treatment unit, a rear-section iron-carbon micro-electrolysis unit and a deep treatment unit. The method has the advantages of reasonable process combination, high impact load resistance, strong treatment capacity and stable and up-to-standard effluent quality; the method is suitable for the treatment of comprehensive sewage in a fine chemical industry park, such as pesticide chemical wastewater, dye pigment chemical wastewater, essence and fragrance chemical wastewater, cosmetic health-care product wastewater, food and feed additive wastewater, daily chemical wastewater, production and domestic sewage mixed with the wastewater and the like.

The embodiment of the invention discloses a system and method of three-stage type electro-Fenton for reducing wastewater chemical oxygen demand (COD). The method of the three-stage type electro-Fentonfor reducing the wastewater COD comprises the steps that in the first stage, wastewater added with quantitative H2O2 is introduced into an electrolytic bath with iron electrodes for electrifying, andelectrolysis is carried out for generating excess Fe<2+> and hydroxyl radical of organism in oxidized wastewater generated by reacting Fe<2+> with H2O2; in the second stage, excess H2O2 is removed through the Fe<2+> generated continuously by the iron electrodes; and in the third stage, air-blowing oxidation is carried out to oxidize the Fe<2+> to Fe<3+> for subsequent separation. According to themethod of the three-stage type electro-Fenton for reducing the wastewater COD provided by the embodiment of the invention, the capacity of oxidizing the organism is very strong, almost most organismsin current nature can be oxidized, the influence of excess H2O2 on a treated wastewater COD detection value is eliminated, and the COD of wastewater can be directly reduced to be below 50 mg/L or lower from 200-2000 mg/L; and compared with other advanced oxidation technology, a more accurate energy consumption material calculation result is achieved, a metal salt and a medicament residual in treated water are not added fundamentally, more stable effluent quality with higher quality is obtained, and the treatment method has the advantages of low cost and less occupied area.

The invention provides double-membrane method integrated sewage treatment equipment. The double-membrane method integrated sewage treatment equipment comprises a plurality of biological contact oxidation ponds, an MBR membrane pond and a filter, wherein a garland combined filler is arranged in the biological contact oxidation ponds, an MBR membrane assembly is arranged in the MBR membrane pond, awater inlet is formed in the top of at least one biological contact oxidation pond, raw water enters from the water inlet and sequentially passes through the biological contact oxidation pond and theMBR membrane pond, and a membrane water outlet pipe of the MBR membrane pond is connected with a membrane water outlet pump; the membrane water outlet pump is connected with a water inlet pipe of a filter through a waterway channel; the water outlet of the filter is connected with a clear water outlet pipe; microporous aeration coils are arranged in the biological contact oxidation ponds and theMBR membrane pond, and the outer ports of the microporous aeration coils are connected with an air blower. According to the double-membrane method integrated sewage treatment equipment, the technicalcharacteristic of combination of the biological contact oxidation membrane and the membrane bioreactor (MBR) is integrated, and the water quality of clear water is improved through the filter with thebuilt-in AFM active filter material.

The invention discloses a sewage treatment system and a treatment method thereof, the treatment system comprises an adjusting tank, a biochemical treatment tank, an aeration system, a sludge blending tank, a common backwashing tank, a first enhanced acid backwashing tank and a second enhanced alkali backwashing tank, the biochemical treatment tank is internally provided with a plurality of MBR membrane devices; the sewage treatment method comprises the following steps: according to the trend of sewage, the sewage in the regulating tank enters the MBR membrane devices in the biochemical treatment tank for treatment, one part of the treated sewage is discharged, the other part of the treated sewage enters the ordinary backwashing tank, and the MBR membrane devices are communicated with the MBR membrane devices in the biochemical treatment tank. In the sewage treatment process, the aeration system is always kept in an aeration state, and the treatment system and the treatment method thereof are small in occupied area, high and stable in effluent quality, low in residual sludge yield and low in cost.

The invention relates to a baffled combined membrane bioreactor. The baffled combined membrane bioreactor is characterized in that the operation of the complete bioreactor is controlled by an automatic control system, and the bioreactor comprises a baffled reaction zone (1), buffer zones and membrane reaction zones, through which wastewater passes from inlet to outlet; the baffled reaction zone (1) is communicated with a first buffer zone (2-1) and a second buffer zone (2-2) respectively in an output manner, the first buffer zone (2-1) is communicated with a first membrane reaction zone (3-1), and the second buffer zone (2-2) is communicated with a second membrane reaction zone (3-2). The baffled combined membrane bioreactor has the advantages that the treatment efficiency is high, the quality of outlet water is high and stable, the bioreactor is compact and is small in floor area, the trapping, growth and reproduction of slow-proliferation nitrifying bacteria are facilitated, the fully-automatic control can be realized through a PLC (Programmable Logic Controller), and the operation management is simple.