694 results about "Activated sludge" patented technology

The invention relates to a compound soil improvement fertilizer and a preparation process thereof, and belongs to the technical field of agricultural environmental protection. The fertilizer is prepared from a modified biochar carrier, a compound microbial agent, an organic fermentation substrate and an inorganic mineral component. The modified charcoal carrier forms a hierarchical pore structure through acid modification and mineral loading; the compound microbial agent comprises phosphate solubilizing bacteria, nitrogen-fixing bacteria and organic matter degrading bacteria; the organic fermentation substrate is prepared from mushroom bran, activated sludge and corncob through segmented fermentation; the inorganic mineral component comprises attapulgite and dolomite powder. The preparation process comprises the steps of biochar modification treatment, microorganism composite culture, organic matrix segmented fermentation and slow-release coating granulation. The fertilizer can synchronously improve the physical structure, chemical properties and microbial ecology of soil, significantly improve the nutrient utilization efficiency, reduce the application amount of the chemical fertilizer, effectively repair degraded soil and enhance the stress resistance of crops.

The invention discloses a culture tail water resource treatment system based on pearl mussels, which belongs to the technical field of aquaculture and water environment protection and comprises a culture pond, a plurality of first treatment ponds, at least one second treatment pond, a third pipeline and a control unit. Each first treatment pond is connected with the culture pond through a first pipeline, activated sludge is laid in each first treatment pond, and an aeration device and an adsorption filter with the height capable of being adjusted through a lifting mechanism are arranged on each first treatment pond. The second treatment pond is connected with the first treatment pond through a second pipeline, the interior of the second treatment pond is divided into a phycomycete symbiotic area and a water quality purification area, the water quality purification area sequentially comprises a supporting layer, an adsorption layer and a substrate layer from bottom to top, and various aquatic plants are planted in the substrate layer. The third pipeline is connected with the second treatment pond and the culture pond to form a closed water treatment circulation loop. The control unit is responsible for monitoring and regulating the operation state of the system. According to the system, efficient purification and resource recovery of aquaculture tail water are realized through multi-stage treatment and cyclic utilization.

The invention provides an intelligent self-adaptive control method and system for sewage aeration, and is applied to the field of intelligent control of activated sludge process sewage treatment. The method comprises the steps that inlet water quality parameters are collected through a sensor array, abnormal fluctuation is recognized through a support vector machine, the sudden increase probability of pollutant concentration is calculated by combining a neural network with a historical mode, and when a threshold value is exceeded, a response delay index is calculated based on inlet water flow and biochemical kinetic parameters; generating an oxygen injection sequence according to the real-time dissolved oxygen data so as to regulate and control aeration equipment, and performing closed-loop feedback regulation according to the real-time dissolved oxygen data; by means of the scheme, pollution impact can be predicted in advance, system lag can be compensated, accurate matching of oxygen supply and loads on the time sequence is achieved, the quality stability of outlet water is effectively improved, and energy consumption is reduced.

The invention discloses an algae species with both efficient denitrification and high free ammonia tolerance and application thereof. The invention provides an inflatedfruit senna herb which is preserved in China General Microbiological Culture Collection Center (CGMCC) on December 11, 2024, and the preservation number of the inflatedfruit senna herb is CGMCC No.46280. The inflatedfruit senna herb has the advantages that the inflatedfruit senna herb is preserved in the China General Microbiological Culture Collection Center (CGMCC); the inflatedfruit senna provided by the invention has efficient assimilation removal capability on NO3 <->-N, NO2 <->-N and NH4 < + >-N, and has relatively strong tolerance on high-concentration free ammonia (FA). A bacterial-algae symbiotic system is constructed by the inflator and activated sludge, and is coupled with a dynamic membrane process, so that the denitrification efficiency of the nitrogen-containing wastewater can be remarkably improved, the addition of exogenous organic matters, the aeration energy consumption and the N2O emission are reduced, meanwhile, high-value microalgae biomass is obtained, and efficient, stable and resourceful treatment of the nitrogen-containing wastewater is realized.

The invention discloses a phycomycete symbiotic system and application of the phycomycete symbiotic system in treatment of aquaculture tail water, and belongs to the technical field of tail water treatment. The phycomycete symbiotic system comprises chlorella, scenedesmus and activated sludge, and the initial inoculation dry weight ratio of the chlorella to the scenedesmus to the activated sludge is 1: 1: 6. And exogenously adding octanoyl-L-homoserine lactone or tetradecanoyl-L-homoserine lactone into the phycomycetes symbiotic system, so as to construct the phycomycetes symbiotic system with enhanced functions. On the basis of a mixed algae-bacteria symbiotic system with an optimized ratio, directional enhancement of functions is realized by virtue of quorum sensing signal molecules, the stability and resistance gene interception capability of the quorum sensing signal molecules under the stress of antibiotics are verified, and finally efficient purification of the aquaculture tail water is realized. According to the invention, the blank of the prior art in the aspects of advanced regulation and control of a phycomycete synergistic mechanism and synergistic treatment of emerging pollutants is filled up.

The invention discloses a wastewater treatment plant modeling method and system based on a physical information neural network. The method comprises the following steps: acquiring and inputting working condition parameters and inlet water quality data to a neural network model, and performing forward calculation to obtain predicted outlet water state variables and key kinetic parameters; determining a first deviation based on a difference value between the predicted effluent and an actual measurement value, and substituting the predicted variable and the parameter into an activated sludge mechanism differential equation set to calculate a residual error so as to obtain a second deviation; performing weighted summation on the two deviations to form a total optimization target, and performing iterative training according to the total optimization target to obtain a final model; different working condition parameters are substituted into the model for multiple times of forward deduction, and finally in combination with energy consumption data, the working condition with the lowest energy consumption meeting the effluent standard is determined as the optimal process control parameter. By implementing the technical scheme provided by the invention, the actual operation energy consumption meeting the effluent quality standard is reduced.

The utility model discloses an advanced treatment system for high-concentration nitrogen-containing organic wastewater, which sequentially comprises an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a sulfur autotrophic denitrification filter tank and a limestone filter tank, a water passing hole is formed in the upper part of a wall body between the anaerobic tank and the anoxic tank, a hollow aeration fiber membrane assembly is arranged in the anoxic tank, an aeration pipe is arranged at the bottom of the aerobic tank, a mixed liquid reflux pump is arranged at the bottom of the aerobic tank in a penetrating manner and is connected with the anoxic tank through a pipeline, and the aeration pipe is connected with the anoxic tank through a pipeline. A sludge reflux pump penetrates through the bottom of the secondary sedimentation tank and is connected with the anaerobic tank through a pipeline. Iron-carbon micro-electrolysis is intervened in the anaerobic reactor to achieve the purposes of improving the biodegradability of high-concentration degradation-resistant wastewater and enhancing biochemical treatment, and the nitrogen removal mode of anaerobic section MABR bubble-free aeration synchronous nitrification and denitrification is organically combined, so that the treatment load of the system and the utilization rate of activated sludge are improved.

The invention belongs to the technical field of biomass anaerobic treatment, and particularly discloses a method for preparing methane through biomass anaerobic digestion based on oxygen nano bubble water. Biomass, activated sludge, oxygen nano bubble water and water are mixed, anaerobic digestion treatment is carried out, and methane is obtained. By introducing high-stability oxygen nano bubble water, a suitable micro-aerobic environment is provided for facultative anaerobic bacteria, so that the metabolic activity of the facultative anaerobic bacteria is activated, the decomposition and conversion of complex organic matters are accelerated, and the efficiency of a hydrolytic acidification stage is remarkably improved. Compared with a traditional chemical or physical pretreatment mode, the method has the advantages that interference on anaerobic flora is avoided, the degradability of a substrate is effectively enhanced, and more sufficient organic acid is provided for a subsequent methane production stage, so that the yield of methane is increased.

The invention provides a BDO (1, 4-butanediol) wastewater treatment process with high sulfate content, which comprises the following steps: carrying out electrochemical oxidation treatment on BDO (1, 4-butanediol) wastewater with high sulfate content; introducing the obtained BDO wastewater into an anaerobic reaction device for anaerobic reaction to reduce sulfate ions into hydrogen sulfide and oxidize organic matters to reduce COD (Chemical Oxygen Demand); effluent sequentially flows back to the circulating desulfurization device and the air floatation device; carrying out aeration treatment in the circulating desulfurization device so as to oxidize hydrogen sulfide into elemental sulfur; elemental sulfur is recycled in the air flotation device, and part of effluent of the air flotation device and part of effluent of the anaerobic reaction device flow back to inlet water of the anaerobic reaction device; part of effluent of the air floatation device and part of effluent of the anaerobic reaction device are combined and then are sequentially introduced into an aerobic activated sludge tank with a membrane bioreactor and an ozone catalytic oxidation tank. Effluent can enter a subsequent ultrafiltration reverse osmosis membrane system to be purified, and water produced by the membrane system is recycled as reclaimed water.

The embodiment of the utility model provides a wastewater treatment device, and relates to the technical field of wastewater treatment. The device comprises a reactor, a filter and a liquid outlet pipe, a reaction cavity is formed in the reactor, a water inlet and an exhaust port are formed in the reaction cavity, and the reaction cavity is used for containing activated sludge reacting with wastewater; a filter cavity is formed in the filter, and a membrane assembly is arranged in the filter cavity and used for filtering reaction liquid obtained after the wastewater reacts with the activated sludge; the reaction cavity is provided with a liquid outlet, the filtering cavity is provided with a liquid inlet, and the liquid outlet pipe is connected between the liquid outlet and the liquid inlet. According to the wastewater treatment device provided by the embodiment of the invention, the reactor and the filter are independently arranged and are isolated from the reaction cavity of the reactor, so that most sludge and microorganisms are left in the reactor, the contact between the sludge and the filter membrane and the contact between the microorganisms and the filter membrane are effectively reduced, and the treatment efficiency of the membrane bioreactor is further ensured.

The invention provides a sewage biological treatment model prediction control method. According to the method, firstly, parameters are sorted through global sensitivity analysis, and high-sensitivity parameters are emphatically processed; dynamically evaluating the local sensitivity of the parameters based on a multi-scale time window; the DDQN network based on sensitivity guidance is fused with data-driven learning and physical mechanism knowledge; and the model prediction control system realizes multi-objective optimization of stable and up-to-standard effluent quality and energy-saving operation of the system based on the calibrated ASM3 model. According to the method, a complete closed-loop system from sensitivity analysis to parameter correction to prediction control is constructed, and compared with a traditional off-line parameter correction and experience control method, the model prediction precision, the control response speed, the operation stability, the energy efficiency level and the like are remarkably improved; and a complete technical support is provided for intelligent operation of an activated sludge process.

The invention discloses a method for inducing formation of active granular sludge by adopting polyurethane sponge, which comprises the following steps: S1, adding to-be-cultured active sludge into a culture container, and adding a culture solution for induced culture; s2, fixing a polyurethane sponge on a rod body, and suspending the polyurethane sponge above the culture container, so that the polyurethane sponge is immersed in the culture solution; and after the activated sludge is settled, adjusting the height of the rod body so as to enable the polyurethane sponge to descend into the activated sludge. The invention also discloses a reaction device for inducing the formation of the active granular sludge by adopting the polyurethane sponge. According to the method provided by the invention, the activated sludge is inoculated into the anaerobic digestion solution and is combined with the exogenous carrier to obtain the initial granular sludge induced by the polyurethane sponge, and the initial granular sludge is used as seed sludge to drive the formation of the subsequent granular sludge, so that the formation period of the granular sludge is remarkably shortened.

The invention relates to the technical field of sewage treatment equipment, and particularly discloses sludge granulation equipment, sewage biochemical treatment equipment and a sewage treatment processing line. The sludge optimization equipment is used for improving the performance of sludge for sewage treatment and comprises a main tank body, partition blocks are arranged in the main tank body to divide the main tank body into a contact chamber and a hollow chamber, and a circulating part is arranged on each partition block to allow the sludge to pass through; iron shavings are placed in the contact cavity, and the filling ratio of the iron shavings is 0.6-0.9. Sludge optimization equipment taking the iron shavings as a core can be connected into a sewage biochemical treatment process to improve the biochemical characteristics of the sludge in multiple aspects, so that the denitrification nitrogen removal capability of microorganisms in the sludge can be enhanced, the requirement of the microorganisms on an external carbon source is abandoned, the phosphorus removal effect of a whole set of system using an activated sludge method can be improved, and the economic benefit is increased. Meanwhile, aerobic granular sludge with better performance is formed in a continuous flow sewage treatment process, so that the sewage treatment effect is comprehensively improved finally.

The utility model belongs to the field of anoxic tanks, and particularly relates to an anaerobic sludge interception device which comprises a sewage tank, a placement plate is fixedly connected to an inner cavity of the sewage tank, and a circulating mechanism is arranged at the bottom of the placement plate; the circulating mechanism comprises a first hollow groove, the first hollow groove is formed in the surface of the placement plate, a hollow pipe is fixedly connected to an inner cavity of the first hollow groove, a valve is fixedly connected to an inner cavity of the hollow pipe, a water pump is fixedly connected to one side of the sewage pool, and a second hollow groove is formed in the surface of the sewage pool; sewage is poured into the sewage pool and purified by activated sludge, the treated sewage is discharged to the lower side in the sewage pool through the hollow pipe, the water pump pumps the sewage in the sewage pool through the first water pipe, the sewage is discharged to the upper side in the sewage pool through the second water pipe, and the sewage is purified by the activated sludge again. The sewage treatment effect can be better, an additional new sewage pool is not needed, and the occupied space is reduced.

The invention discloses an activated sludge self-adaptive regulation and control method based on multi-source data mining, and belongs to the technical field of sludge treatment.The activated sludge self-adaptive regulation and control method comprises the steps that a microflora feature data set is obtained from a sewage treatment system; according to the microflora feature data set, analyzing the sludge state by adopting a classification model, and judging the growth stage of microorganisms; determining the current sludge discharge load level; if the current sludge discharge load level exceeds a preset threshold value, deducing future sludge state evolution by adopting a prediction model according to the type of the current microbial growth stage and the microbial community characteristic data set to obtain an aeration intensity adjustment threshold value; determining sludge discharge configuration parameters by matching the aeration intensity adjustment threshold value with the current aeration intensity; and taking the aeration intensity adjustment threshold value and the sludge discharge configuration parameter as a sewage treatment parameter configuration scheme. The activated sludge self-adaptive regulation and control method based on multi-source data mining solves the problem that regulation and control of activated sludge are difficult to realize accurately at present.

The invention discloses a method and a device for degrading bisphenol A by using a propane matrix membrane bio-membrane reactor, and belongs to the technical field of microorganism application. The method specifically comprises the following steps: inoculating activated sludge into a membrane bio-membrane reactor with a basic inorganic salt culture medium, and introducing propane to promote the growth of a bio-membrane on hollow fiber membrane filaments in the membrane bio-membrane reactor, so as to obtain the membrane bio-membrane reactor after membrane formation is completed; the method comprises the following steps: introducing bisphenol A-containing wastewater to be treated into a membrane bio-membrane reactor, continuously introducing propane, and inducing microorganisms to express alkane monooxygenase and cytochrome P450 monooxygenase, thereby promoting hydroxylation of bisphenol A and degrading bisphenol A into a downstream product of which the toxicity is lower than that of bisphenol A. The propane is used as a carbon source and an electron donor, the propane can be efficiently utilized to provide a safe and good environment for biodegradation of bisphenol A, and secondary pollution possibly caused by a traditional carbon source is avoided.

The invention provides an auxiliary operation and maintenance prediction method and device for a biological reaction tank activated sludge treatment process based on a robot, relates to the field of sewage treatment, and solves the technical problem that the early warning capability for abnormal sludge working conditions is insufficient due to the fact that dynamic association between sludge character indexes and effluent quality is not fully considered. The method comprises the following steps: inputting preprocessed water quality data into a water quality parameter prediction channel, and extracting a long-term dependency relationship and a local mode of a water quality parameter sequence from the water quality data through a time sequence convolutional network; and inputting the index data of the pretreated sludge and the image data of the sludge in the biological reaction tank into a sludge character analysis channel, and extracting a bidirectional time sequence dependency relationship and the sensitivity to sequence change through a bidirectional long-short-term memory network. And through a cross attention mechanism in the sludge character and water quality prediction fusion model, carrying out dual-channel feature weighted fusion. The method is used for establishing a sludge character and water quality prediction model and device, and the intelligent operation level of a sewage treatment plant is improved.

The device comprises a pretreatment unit and a PLC (Programmable Logic Controller), a denitrification reaction unit is arranged on one side of the pretreatment unit, and a deep denitrification unit is arranged on one side of the denitrification reaction unit. According to the utility model, the biogas slurry is flocculated through the flocculation tank, flocculate can be stood and settled through the settling tank, so that part of SS and COD can be removed, the biogas slurry sequentially passes through the three-phase separator, the carrier and the activated sludge to react, primary denitrification is realized, the denitrified biogas slurry can circulate in the reaction tank through the cooperation of the spray header and the transmission unit, and the denitrification effect is improved. The biogas slurry is fully reacted through the composite filler, so that deep denitrification is achieved, by adopting the activated sludge required by anaerobic ammonia oxidation, the carrier adsorbed with the denitrification biological strain and the composite filler, low-carbon-nitrogen-ratio wastewater can be denitrified under the condition that a carbon source does not need to be added, so that the project wastewater can be discharged up to the standard, and the wastewater can be recycled. And the operation cost of wastewater treatment can be saved.

The invention relates to the technical field of pig farm wastewater treatment, in particular to a bioreactor for treating wastewater based on algae-bacteria symbiosis and a wastewater treatment method.The bioreactor comprises activated sludge and algae, and stable bacteria-algae floc is formed in the bioreactor through self-attachment of the algae to a double-layer concentric carrier; removing nutrient substances in the wastewater; the wastewater is pig farm wastewater. The bioreactor provided by the invention promotes algae self-adhesion and floc formation through the algae self-adhesion double-layer concentric carrier, systematically guides bacterial-algae symbiosis, realizes synergistic metabolism, significantly improves COD, TN and TP removal efficiency, and realizes efficient removal of nutrients in pig farm wastewater treatment under extreme conditions of high ammonia nitrogen, high TP and the like.

The invention relates to the technical field of biological sewage treatment, and particularly discloses a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Bioreactor) membrane. The invention provides a process for combined treatment of antibiotic wastewater by a compound microorganism-MBR (Membrane Biological Reactor) membrane, which comprises the following steps of: performing directional domestication and toxicity screening on activated sludge through COD (Chemical Oxygen Demand) gradient increase and decrease and removal rate control, and constructing a microbial community resistant to sulfamethoxazole impact; further, a compound bacteria solution composed of marine Arfiv bacteria and Rhodopseudomonas faecalis is introduced, so that synergistic degradation of high COD and sulfamethoxazole is realized under a proper pH condition, and the COD removal rate is still kept at a relatively high level when the concentration is increased; and the tail end is matched with MBR membrane separation, and efficient biodegradation and efficient solid-liquid separation are coupled, so that the sulfamethoxazole and COD in the wastewater are efficiently removed under the conditions of low drug consumption and near neutrality.

The invention discloses a wastewater treatment system based on municipal engineering, and relates to the technical field of wastewater treatment. The suction part close to the bottom of the tank body reaction tank is arranged below the flow mixing box, the suction runner is used for lifting a wastewater mixture at the bottom of the tank body reaction tank into the flow mixing box, the backflow part is used for conveying the aerated wastewater mixture into the tank body reaction tank, and the backflow runner is slidably arranged in the corresponding suction runner in a sleeving manner. The jet flow assembly is communicated with the backflow flow channels on the two sides of the jet flow assembly, and the jet flow assembly is used for jetting the wastewater mixture in the backflow flow channels into the tank body reaction tank in a jet flow mode. According to the invention, by controlling the lifting motion of the support ring and the conducting pipe among different jet flow point positions, sludge mixed wastewater at the bottom of the pool can be pumped out and conveyed and dispersed into the wastewater at the different jet flow point positions, so that oxygen-mixed activated sludge can be fully diffused in the wastewater to improve the pollutant degradation effect.

The invention provides Chryseobacterium P6 for degrading unsymmetrical dimethylhydrazine and a degradation method of the Chryseobacterium P6, the strain is obtained by separating from activated sludge which is domesticated by the unsymmetrical dimethylhydrazine for a long time, and the strain is identified as Bacteroidetes door and Chryseobacterium by 16SrDNA (Deoxyribose Nucleic Acid) gene sequence analysis. After being amplified and cultured for 12 hours by an LB culture medium, the strain can show remarkable degradation activity on unsymmetrical dimethylhydrazine under the conditions that the pH is 7.0 and the temperature is 32 DEG C, and the degradation rate within 48 hours can reach 95% or above. The method is suitable for in-situ remediation of industrial wastewater, polluted soil and waste without additionally adjusting the pH value or adding an oxidizing agent; rapid propagation of the strain can be realized by using a conventional culture medium (such as an LB culture medium), complex equipment or energy input is not needed in the degradation process, and the unit treatment cost is reduced by more than 60% compared with that of a chemical oxidation method; no heavy metal catalyst, high-concentration oxidant or adsorbent is used in the whole process, and secondary pollution risks of bromate, regenerated waste liquid and the like are completely eradicated.

This invention provides an activated sludge wastewater pretreatment tank, belonging to the field of wastewater treatment technology. The tank includes a tank body with several aeration pipes arranged on the inner bottom surface. One end of each aeration pipe is connected to one side of a main air pipe, and an air inlet pipe is located on the other side of the main air pipe. Several spray pipes are fixedly connected to the upper surface of each aeration pipe. This invention features high bubble turbulence during aeration, which facilitates uniform aeration and prevents clogging. Clogging does not occur after shutdown, and frequent maintenance of the aeration positions is not required during use, making it convenient to operate.

The invention belongs to the technical field of wastewater treatment equipment, and particularly relates to wastewater extraction equipment for producing dioctyl terephthalate, which comprises a main body, and the main body is internally divided into a flocculation zone, an anaerobic zone, an aerobic zone and a settling zone; sludge discharge plates are mounted on the bottom surfaces of the flocculation area and the sedimentation area, the upper surfaces of the sludge discharge plates are obliquely arranged, and cavities are formed in the sludge discharge plates and connected with air inlet control pipes; a mounting baffle is mounted in the flocculation area, magnetic blocks are symmetrically mounted on the mounting baffle, and a movable net is slidably mounted between the magnetic blocks; the lower end of the mounting baffle is not in contact with the bottom of the flocculation zone; the device is simple in structure, mixed wastewater is filtered and settled for multiple times, solid impurities in the wastewater are fully discharged, meanwhile, water flow is used for impacting and stirring from bottom to top, activated sludge is kept in a suspended state, uniformity and fluidity are improved, and the wastewater recycling effect is guaranteed to be improved.

The invention discloses a sewage advanced treatment and activated carbon regeneration method. The method comprises the following steps: (1) filling activated carbon according to 30-70% of the effective volume of a reactor; (2) carrying out wall breaking treatment on the residual activated sludge, releasing substances in cells, precipitating or filtering to remove impurities, keeping the liquid on the upper surface, adding the liquid into the reactor in the step (1), carrying out braising exposure treatment for 12-24 hours, and controlling the concentration of dissolved oxygen to be more than 5mg / L; (3) adding a nitrogen and phosphorus removal bacterial agent into a reaction system in the step (2), carrying out continuous aeration treatment, and then carrying out sewage treatment according to set hydraulic retention time; in the sewage treatment process, regular rotational flow treatment is performed on the activated carbon to regenerate the activated carbon. According to the method disclosed by the invention, dynamic biological regeneration of the activated carbon part can be realized, the service cycle of the activated carbon is further prolonged, and synchronous deep removal of organic pollutants and nitrogen-containing pollutants is realized.

An aquaculture tail water ecological treatment device comprises a settling pond, the settling pond is horizontally arranged in a quarter arc shape, a water inlet is formed in the head end of the settling pond, a water retaining interlayer is arranged on the inner wall of the settling pond to form a zigzag water channel, a mud discharge channel is formed in the bottom of the settling pond, and the tail end of the settling pond is connected with one end of a first filter dam; the other end of the filter dam is connected with one end of an aeration tank, the aeration tank is transversely arranged, the inner walls of the two ends of the aeration tank are respectively provided with aeration equipment, the other end of the aeration tank is connected with one side surface of a second filter dam, the other side surface of the second filter dam is connected with the long side surface of an ecological tank, and activated sludge is added into the ecological tank. A plurality of ecological floating beds are placed in the ecological pool, a sludge discharge port is formed in the bottom of the ecological pool, and a water outlet is formed in the arc-shaped inner wall of the ecological pool. Therefore, specific pollutants in the aquaculture tail water can be effectively treated, and the occupied area of the whole system is reduced.

A method and apparatus for treating wastewater using a sequencing batch reactor wherein the biological solids are densified through hydraulic and organic selection pressures. Wastewater is introduced to the reactor near the end of the treatment cycle under anaerobic conditions following the effluent withdrawal step and prior to the start of next treatment cycle. A floating sludge withdrawal apparatus is used in conjunction with a floating surface mixer to selectively remove lighter flocculant solids and retain denser solids by temporarily reducing the mixing energy during the wasting process.

This invention discloses an ecological water treatment process, comprising the following steps: treatment using a fluidized bed biofilm reactor; adding cellulose / sepiolite composite packing material and nutrient solution to the fluidized bed biofilm reactor; inoculating the fluidized bed biofilm reactor with activated sludge and performing an aeration reaction; operating the fluidized bed biofilm reactor with continuous ecological water intake, aeration reaction, and pH adjustment within the system; continuous sludge recirculation from the secondary sedimentation tank of the fluidized bed biofilm reactor during operation; when the water treatment packing material in the fluidized bed biofilm reactor reaches a certain thickness, adjusting the dissolved oxygen and pH within the system; continuous sludge recirculation from the secondary sedimentation tank of the fluidized bed biofilm reactor, and effluent. This treatment process can effectively degrade toxic organic substances in ecological water and exhibits excellent adsorption and high removal rates for antibiotic residues, achieving the purpose of purifying ecological water.

The application provides a heavy metal capturing agent biochemical inhibition recovery medicament, a preparation method and application thereof, and relates to the field of sewage treatment. The heavy metal capturing agent biochemical inhibition recovery medicament comprises the following components in parts by weight: anionic polyacrylamide 1-5 parts, hydroxyapatite 2-13 parts, zinc salt 5-10 parts, aluminum salt 15-30 parts, nickel salt 1-5 parts, copper salt 1-10 parts, calcium hypochlorite 0.5-3 parts and biocompatible solute 20-50 parts. The medicament formula provided by the application can effectively eliminate the problem that the sludge activity of a biochemical system is inhibited due to the conventional heavy metal capturing agent contained in the influent of a sewage plant, and has the characteristics of high efficiency, convenient operation and quick recovery of the nitrification capacity of the biochemical system. The heavy metal capturing agent biochemical inhibition recovery medicament provided by the application can be directly added at different points of contact between the sewage plant and the activated sludge, and the operation is flexible and convenient, and the original process operation parameters do not need to be adjusted.

The application discloses a kind of acid mine wastewater treatment system and processing technology thereof, belong to wastewater treatment technical field, the system includes acid mine wastewater regulating tank, tailings slurry tank, first thickening tank, secondary thickening tank, sludge regeneration tank and sludge thickening tank, acid mine wastewater regulating tank is connected by acid water pump with the water inlet of first thickening tank, tailings slurry tank is connected with the first thickening tank, the water outlet of first thickening tank is connected with secondary thickening tank, the sludge inlet of secondary thickening tank is connected with sludge thickening tank;The sludge inlet of sludge regeneration tank is connected with the sludge discharge port of secondary thickening tank, the sludge discharge port of sludge regeneration tank is connected with the sludge inlet of sludge thickening tank, and waste water treatment is carried out using the system.The application utilizes pyrite beneficiation process tailings slurry cooperates fly ash and active sludge to treat acid mine wastewater, can remove heavy metal simultaneously, realizes acid mine wastewater resource utilization, protects the ecological environment of mining area, reaches the purpose of green production of mine safety.