596results about How to "Guarantee water quality" patented technology

The invention provides an integrated internal circulation type denitrification and decarburization bio-membrane reactor and an operating method thereof. The main body of the reactor consists of an anoxic zone on the lower part, an aerobic zone on the upper part and a settling zone on the periphery of the aerobic zone; a composite filler is filled in the anoxic zone, and a water inlet pipe is communicated with the bottom of the anoxic zone; the aerobic zone is partitioned into a filler zone for adding a carrier on the upper part and a mud-water mixing zone on the lower part by adopting an orifice plate, the anoxic zone and the aerobic zone are partitioned through an impermeable partition plate, and a plurality of aeration pipes are arranged at the bottom of the aerobic zone and provided with air inlet pores; and the settling zone consists of three parts, namely a clean water zone, a contact settling zone and a sludge returning zone which are sequentially arranged from top to bottom, wherein the bottom of the sludge returning zone is provided with a sludge returning seam and communicated with the bottom of the aerobic zone. The reactor realizes zero power consumption in sludge returning, and is compact in structure; and a back flushing system is not required in the contact settling zone, and additional agents and carbon sources are not required, so that the reactor is low in running cost.

A culture method of aerobic granular sludge for simultaneous denitrification and dephosphorization of domestic sewage at low and normal temperature belongs to the sewage treatment field and is characterized in that: an SBR reactor adopts 2-10 ratio of height to diameter and 50-67 percent of volume exchange rate without regulation and control over water temperature. The precipitation time is 30-50min, and is reduced gradually to 1-3min; or the precipitation time is set as 5-8min, and is reduced gradually to 1-3min. In biochemical reaction process, dissolved oxygen concentration DO, oxidation-reduction potential ORP and pH value are taken as real-time control parameters to control stirring time in real time (denitrification, phosphorus release), aeration time (organic matter oxidation, nitration, denitrification, aerobic phosphorus absorption, denitrifying phosphorus absorption). The method can improve the content of nitrobacteria and phosphate accumulating organisms, realizes the simultaneous denitrification and dephosphorization of low-COD domestic sewage at low and normal temperature through the aerobic granular sludge in anaerobic/aerobic manner, is simple in process, low in sludge yield, high in reaction efficiency, good in sludge precipitation performance and small in the area occupied by the reactor, and solves the problems of low operation efficiency and unstable treatment of nitrogen and phosphorus caused by time programmed control of a sewage treatment system.

A system for treating sewage is composed of a pretreating construction, a deflection-type nunja filter pool group and a lateral underflow nunja bed group, which are arranged in gradient mode from high level to low level. Each filter pool contains a vertical retention wall, filler (haydite or zeolite) and aquatic plant. Said lateral underflow nunja bed group consists of multi-stage lateral underflow nunja bed, natural oxygen-aerating area and anaerobic stabilizing pond. Its method is also disclosed.

The invention provides a system for carrying out collection, purification and utilization on rainwater on road surfaces, and the system comprises a groove and one or more packing units arranged in the groove, wherein the two sides of each packing unit are respectively provided with a baffle, a ventilation well is formed between two baffles arranged at the head end and tail end of two adjacent packing units, and a ventilation well is formed among the baffles at the two ends of the groove and the inner side wall of the groove; the bottom surface of each packing unit is provided with a concrete grating, a water collecting sump is formed between the concrete grating and the internal bottom surface of the groove, and the water collecting sump is mutually communicated with all the ventilation wells; and the packing unit on the concrete grating is composed of a cobble layer, a gravel layer, a matrix layer and a planting soil layer which are sequentially arranged from bottom to top, and plants are planted in the planting soil layer. Rainwater which is purified by the system disclosed by the invention can satisfy the needs of agricultural water and general landscape water.

The invention discloses a SBR alternant aerobic/anaerobic technology for biological denitrification and real time control device and method thereof which consists of, dividing the waste water to be treated into three portions, loading each portion into a reactor, alternatively carrying out the operating mode of aerobic aeration and anoxybiotic agitating under real time procedure control, so as to realize the organics degradation and nitrogen-containing compound removal.

The invention relates to the technical field of industrial wastewater treatment, in particular to a method and a device for treating salt-containing wastewater produced during producing epoxy chloropropane by using glycerol as a raw material. The treatment method comprises the following steps of: (1) mixing the salt-containing wastewater and other wastewater with low pollution, adding nitrogen and phosphorus nutrients, and discharging the mixed wastewater after the salt content of the wastewater is less than 5 percent; (2) introducing the wastewater treated in the step (1) into a moving bed film biological reactor, and further treating the wastewater by using active sludge; and (3) introducing the wastewater treated in the step (2) into an ozone reaction unit to perform ozone oxidation treatment, and then discharging the treated wastewater. The invention also provides the wastewater treatment device adopted by the method. The device mainly comprises a regulating tank, the moving bed film biological reactor and the ozone reaction unit. The treatment process is simple, the operation is stable, the cost is low, the water quality of the discharged water can be ensured, and the method and the device are suitable for treating the organic wastewater with high salt content and high chemical oxygen demand (COD).

The invention discloses an aquaculture sewage treatment method, which specifically comprises the following steps of: firstly, feeding an microbial agent into sewage discharged from a culture pool, then introducing the sewage into a flocculation basin, and continuously feeding flocculants under the condition of continuous air aeration, wherein the hydraulic retention time is 15-30 minutes; and introducing the sewage subjected to air aeration and flocculation treatment into a membrane device under the action of a constant-flow pump to complete filter treatment, directly discharging permeated clear water or returning the permeated clear water to the culture pool for reutilization, and returning concentrated sewage to the flocculation basin for continuous treatment or directly discharging partial of the concentrated sewage. According to the aquaculture sewage treatment method, a biological treatment technology, a flocculation technology and a modern membrane filtration technology are organically combined, so that water quality is guaranteed, the production efficiency is increased, the production cost is greatly reduced, the advantages of simple process, stable system, small occupancy, low operation cost and the like are achieved, and bacteria and suspended matters in the sewage can be removed, and the purpose of safety recycling is achieved.

The invention discloses a multi-target optimization control method based on a dynamic variable value and belongs to the field of modeling and optimization control of complex industry processes. According to the invention, based on a sewage processing mechanism model, by improving a traditional control method, designing 3 dynamic variable value tracking controllers and carrying out dynamic optimization on setting values of each controller in each optimization period, dynamic variable value tracking control of dissolved oxygen concentration of fourth and fifth reaction units and nitrate nitrogenconcentration of the second reaction unit is achieved, so a problem of big tracking difficulty in traditional control mode is solved; by taking the setting values of the controllers as auxiliary variables, soft measurement modeling of energy consumption and penalties is performed; and finally, by use of an intelligent decision multi-target particle swarm algorithm, optimization is performed on setting values of the controllers, so an optimal setting value combination in each optimal period is obtained, the effect of balancing two indexes of energy consumption and discharged water quality is achieved, and under the premise that the discharged water quality is ensured, the energy consumption and penalties are kept in a quite low level simultaneously.

The invention discloses a granule sludge and biological film coupled integrated sewage treatment method and a treatment device suitable for the same. A reactor is internally filled with granule sludge, suspended sludge and filler, wherein a biological film is formed on the filler; the granule sludge is coupled with the suspended sludge and the biological film by utilizing the high efficiency of the granule sludge; meanwhile, a micro-aerobic aeration environment is provided at a proper position in the reactor, and an anaerobic region, an anoxic region and an aerobic region are formed in the reactor, so that an anaerobic microenvironment, an anoxic microenvironment and an aerobic microenvironment are coupled; in addition, the double circulation that part of sludge in the anaerobic region returns to the aerobic region and part of sludge in the aerobic region returns to the anaerobic region is provided, and a proper quantity of sludge in the aerobic region is discharged, so that the synchronous and efficient removal of COD, N, P and the like in sewage is finally realized.

The invention discloses real-time control device and method for the deep denitrification and dephosphorization of an A2/O-BAF (Biological Aerated Filter) process. The A2/O-BAF real-time control device mainly comprises a raw water tank (1), an A2/O reactor (2), a secondary sedimentation tank (3), a BAF reactor (4) and a real-time control system (5). The real-time control method comprises the following steps of: collecting the concentrations of ammonia and nitrogen in a water outlet tank on line and obtaining a real-time control variable through the operation of a computer; adjusting the aeration amount of an air pump through a stroke controller; collecting the concentration of nitrate nitrogen in the water outlet tank on line and obtaining a real-time control variable through the operationof the computer; adjusting the reflux ratio of a peristaltic pump through the stroke controller; collecting the concentration of TP in the water outlet tank on line and obtaining a real-time control variable through the operation of the computer; and adjusting the reflux ratio of the peristaltic pump through the stroke controller. The invention overcomes the limitations of a traditional biological phosphorus and nitrogen removal process of sewage and is one of the most effective methods for the synchronous phosphorus and nitrogen removal of C/N sewage.

The invention relates to a device for optimized control over carbon source feeding in a denitrification biofilter process. The device is provided with a denitrification biofilter, a carbon source box, a frequency-conversion carbon source pump, a carbon source flowmeter, a backwashing air pump and a backwashing air inlet valve; the denitrification biofilter is internally provided with an online-water-inlet nitrate sensor, an online-water-inlet dissolved oxygen sensor, an online-water-outlet nitrate sensor, a nitrate determinator, a dissolved oxygen determinator, a process controller, and an industrial personal computer; and a water inlet pipeline is provided with a water inlet pump, a water inlet valve and an online-water inlet flowmeter. A method for optimized control cover the carbon source feeding is characterized by comprising the following steps of: (1) introducing water; (2) processing and judging parameters; (3) processing frequency ft by a frequency converter; (4) preventing excessive feeding of a carbon source; (5) stably running; (6) diagnosing faults; and (7) performing backwashing. The device and the method disclosed by the invention can be widely applied to sewage advanced treatment and nitrogenous industrial wastewater treatment, is particularly suitable for producing high-quality recycled water, have the advantages of complete structure, precision for control, good effect and high efficiency.

The invention provides a modified Fenton fluidized bed and a method thereof for treating wastewater. The Fenton fluidized bed comprises an oxidation tower, a sieve plate, a filling material A, a filling material B, a Fenton oxidation zone, an iron-carbon reaction zone, a water entering and distributing zone, a water discharging area, a water discharging groove, a circulating device, indispensable pipe fittings and the like. According to the method for treating the wastewater, which is provided by the invention, the wastewater is treated by adopting the modified Fenton fluidized bed; the wastewater is distributed through an annular perforated pipe and the sieve plate of a bottom layer; a COD (Chemical Oxygen Demand) and organic pollutants which are difficult to degrade in the wastewater are decreased through a Fenton reaction; afterwards, the wastewater enters the iron-carbon reaction zone, and active carbon and zero-valence nano iron in the filling material B generate an iron-carbon micro-electrolysis reaction, so as to further catalytically oxidize the organic pollutants, which are difficult to degrade, in the wastewater. The modified Fenton fluidized bed provided by the invention is optimized, economical and reasonable in structure and high-efficiency in treatment.

The invention belongs to the technical field of sewage treatment, and relates to a parallel anaerobic-anoxic-oxic (A2O)-membrane bioreactor (MBR) denitrifying phosphorus removal method. Adopted devices comprise an oxic tank, an anaerobic tank, an anoxic tank and a membrane tank, wherein the oxic tank is connected in parallel with the anaerobic tank; sewage to be treated and external reflux sludge are mixed in a distribution well and flow into the oxic tank and the anaerobic tank according to a proper proportion respectively, and internal reflux mixed liquid which reflows from the anoxic tank also flows into the oxic tank simultaneously; sewage which flows out of the oxic tank and sewage which flows out of the anaerobic tank are mixed and flow into the anoxic tank together for denitrifying phosphorus removal; and the sewage enters an MBR tank for sludge and water separation, and a part of residual sludge serves as the external reflux sludge to be fed into the distribution well. The parallel A2O-MBR denitrifying phosphorus removal method can be used for the new construction and modification engineering of a biological denitrifying phosphorus removal sewage plant, the volume and the aeration amount of an aeration tank can be reduced, and a secondary sedimentation tank can be eliminated simultaneously, so that the floor space of an urban sewage plant is reduced.

The present invention relates to a sewage treatment process by adopting improved alternative type active sludge method. Said sewage treatment process utilizes the equipments of treatment tank, anaerobic chamber, anoxybiontic chamber, aeration tank and flocculation precipitation tank, etc. and alternatively adopts the process steps of stirring, aeration, concentration, sludge reflus, mixing, flocculation, precipitation and biological dephosphorization, etc. so as to attain the goal of purifying sewage.

The invention belongs to the environmental protection technical field and control field and specifically relates to a sewage treatment process energy-saving optimization control method based on a quantum genetic algorithm. The method is characterized in that, with effluent quality, aeration, pumping energy consumption and sludge and waste treatment cost being taken into overall consideration, quantum state vector expression is introduced to genetic encoding to express chromosomes, and evolutionary search is achieved by utilizing quantum gate effect and update so as to optimize operating cost of sludge and waste treatment, backflow and aeration energy consumption and the like of a sewage treatment system; and aeration intensity of an air blower and sludge pump backflow amount are adjusted by a fuzzy neural network controller in real time based on a set value after optimization so as to realize optimization control of the sewage treatment process, thereby reducing the operating cost while ensuring the effluent quality, reducing the sewage treatment cost and promoting efficient and stable operation of a sewage treatment factory.

The invention provides a high efficiency fluidization upward flow multilayer composite filter material biological filter tank coupled with ozonation and a water treatment method thereof, relating to a biological filter tank and a water treatment method using the biological filter tank. The biological filter tank is composed of an upper filter material, a medium filter material, a lower filter material and a supporting layer, wherein the upper filter material is active carbon, anthracite or biological ceramsite, the medium filter material is modified zeolite, natural zeolite or synthetic zeolite and the lower filter material is a phosphorus functional material. The filter tank is characterized by fast start, a complex and stable biological phase, great biomass, high activity, strong impact resistance, a filter material expansion rate of 0% to 50%, small resistance at the head of the filter tank, high mass transfer efficiency of materials, oxygen and pollutants, a high utilization rate of filter layers and filter materials and small possibility of occurrence of hardening of the filtering materials. The filter tank is applicable to treatment of raw water in which the concentration of water source phosphorus, ammonia nitrogen and organic pollutants fluctuates and can stably operate at a low temperature.

The invention provides a process system for disposal and recycling of sewage in oil plants and the corresponding operation method, wherein the process system comprises a disposal unit for sewage of superhigh concentration, a disposal unit for sewage of high concentration, a disposal unit for sewage of low concentration and a sewage recycling unit. The invention is characterized in that: after treated by an oxidation tower and a sequencing bioreactor, the sewage of superhigh concentration is effluent and incorporated in the sewage of high concentration; after treated by a separation tank, a floatation tank and a biological aerated filter, one part of the sewage of the high concentration which comes up to the standards is released, another part is used for dilution water of the sequencing bioreactor, and last part is incorporated in the sewage of low concentration; after treated by a separation tank, a floatation tank and a biological aerated filter, one part of the sewage of low concentration is effluent and used for recycling in a reclaimed water system, one part is incorporated in the sewage of high concentration, another part is used for dilution water of the sequencing bioreactor, and last part which comes up to the standards is released. The process system of the invention realizes respective treatment and water recycling of sewage of high and low concentration in oil plants, can ensure that the effluent water quality is stable and qualified and the cost of disposal and recycling of sewage is reduced.

The invention relates to an electronic electroplating wastewater recycling advanced treatment technology. The technology uses a large amount of rinse-wastewater with heavy metals in the production process of the electronic electroplating industry as the main object, adopts a combined technology of pH adjustment-microfiltration membrane treatment-pretreatment-reverse osmosis membrane treatment, is mainly characterized by the joint application of DF membrane technology and RO membrane technology and can achieve the aim of reusing wastewater and reducing the emission of heavy metals; and the reuse water reaches the production demand of process water, thus saving the fresh water consumption of the industry, effectively reducing the production cost of the industry, solving the pollution problem of heavy metals, increasing the clean production level of the electronic electroplating industry and having remarkable social environmental and economic benefits.

The invention discloses kitchen waste filtrate treatment equipment and method. The treatment method comprises the steps that the kitchen filtrate firstly enters an oil separation tank used for separating oil substances from water substances; the water after separation is converged into a regulating tank and the water quality and quantity are regulated; the effluent enters a reaction tank, PAC (polyaluminium chloride) and PAM (polyacrylamide) are added to the effluent, so that fine particles in the water form a plenty of alum flocs, and then the alum flocs precipitate to be separated in a precipitation tank, thus removing most oil and scum; the effluent from the precipitation tank automatically flows into a neutralization tank, the pH value is regulated to neutral and then the effluent enters a pressure dissolved air floatation tank used for removing the scum formed by the flocculated suspended matter particles or oil particles brought on the water surface from the wastewater; then the pollutants such as organic matters, ammonia nitrogen and the like are removed by the pretreatment+anaerobic+aerobic precipitation+sand filtration technology of an exclusively added backflow sludge contact reactor; finally the wastewater reaches discharge standard.