33results about How to "SS low" patented technology

The invention discloses a coupling type biological denitrification method which comprises the following steps: enabling sewage to enter a front-end anoxic pool, mixing with returned sludge and mixed liquid and carrying out denitrification reaction; entering an aerobic pool, removing an organic matter through aeration, realizing the nitration reaction and synchronizing the nitration reaction and the denitrification reaction; entering a rear anoxic pool and carrying out denitrification reaction again; and alternately entering a first SBR (Sequencing Batch Reactor) pool and a second SBR pool, treating a surplus carbon source generated in the denitrification or deeply nitrating and simultaneously carrying out sludge return. The invention also provides a coupling type biological denitrification system. The coupling type biological denitrification method and the coupling type biological denitrification system have the beneficial effects that pre-denitrification plus aerobic denitrification and CODcr degrading plus post-denitrification plus sequencing batch aerobic reaction are adopted to overcome the influence of an excessive denitrification carbon source on outlet water, the nitrogen removal efficiency is greatly improved, the nitrogen removal effect is remarkable, and the coupling type biological denitrification system is suitable for degrading high ammonia nitrogen and high COD (Chemical Oxygen Demand) wastewater and particularly has an remarkable effect on coal chemical industry wastewater treatment.

The invention provides a method for comprehensively treating and utilizing cassava vinasse waste water and industrial sludge. The method includes: pumping original cassava vinasse waste water into an anaerobic fermentation tank to perform whole-tank high-temperature anaerobic treatment so as to produce biogas; concentrating sludge discharged by the anaerobic fermentation tank, then delivering into a plate-and-frame filter press, and filtering with the plate-and-frame filter press to obtain anaerobic sludge and filtered clear liquid; using a precision filter to perform multistage purification on the filtered clear liquid to obtain first-level plain water and concentrated discharge water, processing the first-level plain water with a membrane biological processing device to obtain second-level plain water which can reach the indexes of production water, and recycling the plain water; mixing the obtained concentrated discharge water and anaerobic sludge with other industrial sludge, dewatering with a dewatering machine, and then conveying to a pyrolyzing furnace for pyrolysis so as to produce combustible gas. The method has the advantages that after the cassava vinasse waste water is subjected to anaerobic fermentation to produce the biogas, self-balancing of energy production and power consumption can be achieved, the water produced after the treatment by the precision filter and a membrane biological reactor can be recycled, resource utilization is achieved, and production cost is lowered.

The invention relates to a wastewater treatment method and discloses a process control method of a modified sequencing batch reactor (MSBR) system. The process control method includes that sequencing batch reactor (SBR) reaction tanks are operated alternately and intermittently and correspondingly regulate the process control method according to ambient temperatures or inflow water quality conditions. The process control method of the MSBR system has the advantages of being concise in operation modes, sufficient in aeration time and pre-setting time and capable of facilitating sediment and reducing suspended substance (SS) in discharged water, and the whole system performs continuous water inflow and continuous backflow to guarantee full mixing of backflow sludge and inflow water, so that automatic control and daily production management are facilitated; and the process control method is capable of achieving the best treatment effect under conditions of different temperatures and different inflow water qualities.

The invention provides an advanced sewage treatment device, which comprises a shell, a filtering material, a filtering material supporting plate, a water collection tank, a water distributor, a water distributor fixing frame, a water outlet pipe, a water inlet pipe, a chemical feed pipe and a dredge pipe, wherein the filtering material is arranged in the shell; the water distributor is connected with the water inlet pipe; the water outlet pipe is arranged on the shell; the water inlet pipe is arranged at an upper opening end of the shell; the dredge pipe is arranged at the bottom of the shell; the advanced sewage treatment device is characterized in that the filtering material is arranged on the upper part in the shell and is supported by the filtering material supporting plate; an oblique plate and an oblique plate supporting frame are arranged below the filtering material; the bottom of the oblique plate is positioned on the oblique plate supporting frame; a chlorine dioxide pipe vertically and downwardly leads into and penetrates through the filtering material from the upper part of the shell; the lower end of the chlorine dioxide pipe is connected with a perforated pipe; and the perforated pipe is positioned between the oblique plate and the filtering material. According to the advanced sewage treatment device, coagulation, oblique plate sedimentation, chlorine dioxide oxidation, filtration and adsorption effects are finished in a same tank; and the advanced sewage treatment device has the advantages of rational and compact structure, good effluent quality, high treatment efficiency, low operation cost, high adaptability and easiness in operation and management.

The invention provides a double-sludge biologically enhanced sewage treatment device, which is cylindrical and includes an anoxic zone formed by a central partition, an aerobic / sedimentation zone surrounding the anoxic zone, and the aerobic / sedimentation zone It includes an anoxic zone with a water inlet opening, a sedimentation zone on the upper part of the anoxic zone, the sedimentation zone is formed on the outside of the inner compartment with an annular guide plate, and the direction of the annular guide plate of the inner compartment and the annular mud guide cone The inclined parts inside the device are relatively spaced apart, and the mud passage formed connects the sedimentation zone and the aerobic zone. The device provided by the invention overcomes the traditional biochemical technology with low sludge concentration, poor biochemical effect and large floor area by adding powder carrier in the central aerobic zone and increasing the attachment area of ​​the activated sludge method in the aerobic zone , the disadvantage of many single structures. Each reaction unit is closely combined in space, the pool body is built together, the head loss is small, and it has the advantages of high sludge concentration, good treatment effect and small device volume.

The invention provides a method for comprehensively treating and utilizing cassava vinasse waste water and industrial sludge. The method includes: pumping original cassava vinasse waste water into an anaerobic fermentation tank to perform whole-tank high-temperature anaerobic treatment so as to produce biogas; concentrating sludge discharged by the anaerobic fermentation tank, then delivering into a plate-and-frame filter press, and filtering with the plate-and-frame filter press to obtain anaerobic sludge and filtered clear liquid; using a precision filter to perform multistage purification on the filtered clear liquid to obtain first-level plain water and concentrated discharge water, processing the first-level plain water with a membrane biological processing device to obtain second-level plain water which can reach the indexes of production water, and recycling the plain water; mixing the obtained concentrated discharge water and anaerobic sludge with other industrial sludge, dewatering with a dewatering machine, and then conveying to a pyrolyzing furnace for pyrolysis so as to produce combustible gas. The method has the advantages that after the cassava vinasse waste water is subjected to anaerobic fermentation to produce the biogas, self-balancing of energy production and power consumption can be achieved, the water produced after the treatment by the precision filter and a membrane biological reactor can be recycled, resource utilization is achieved, and production cost is lowered.

The invention provides a separation type combined stereo constructed wetland system and a sewage processing method. The system comprises a wetland bed body with water separation function, and a stable surface flow pool and a subsurface flow pool which are constructed in the internal space of the wetland bed body; water-purification plants are grown on the surface flow pool, and also the stable surface flow pool is provided with a water inlet device; the stable surface flow pool and the subsurface flow pool are in connection via a reclaimed-water collection distribution device; and the subsurface flow pool is provided with a clean-water discharge device. A separation plate is horizontally arranged in the wetland body, and divides the space into an upper part and a lower part. The upper part is the stable surface flow pool, and the lower part is the subsurface flow pool. The stable surface flow pool and the subsurface flow pool are respectively filled with a stable surface flow pool matrix and a subsurface flow pool matrix, so that the stable surface flow pool and the subsurface flow pool are respectively formed. The provided sewage processing method employs the above wetland for purifying sewage. The advantages of small land occupation area, good discharged water quality and the like are provided.

The invention relates to a coking wastewater optimizing treatment process and device. The process is as follows: light oil and heavy oil contained in the coking wastewater are firstly removed in an oil separator; then air flotation treatment is carried out to reduce ammonia nitrogen; water distribution is carried out in a regulating tank; after water distribution, 70% of the coking wastewater is introduced into an aerobic tank 1, and 30% of the coking wastewater is introduced into an anaerobic tank; after the coking wastewater is subjected to treatments in the aerobic tank 1, a sedimentation tank I, the anaerobic tank, an aerobic tank 2, a sedimentation tank II, a coagulative precipitation tank and a deep treatment tank in sequence, the quality of the final effluent is as follows: COD is lower than 80 mg / L, ammonia nitrogen is lower than 10 mg / L, volatile phenol is lower than 0.3 mg / L, cyanogen is lower than 0.2 mg / L, oil and suspended solids are basically removed, and water quality indicators meet the discharge standards. According to the invention, the process route is short, the equipment investment cost is low, the processing efficiency is high, the effect is stable, energy conservation and cost reduction are achieved, and economic and social benefits are remarkable.

The invention relates to a device for treating sewage by an aeration tank. The device comprises a grille, a grit chamber and a primary settling tank, and is characterized by also comprising a first aeration tank, a second aeration tank and a third aeration tank, wherein the first aeration tank, the second aeration tank and the third aeration tank are sequentially connected; the bottoms of the three aeration tanks are connected; a reverse flushing water outlet buffer tank is arranged; sludge in the buffer tank flows back to the primary settling tank; sewage in the third aeration tank flows back to the first aeration tank to perform denitrification; final sewage treated by the third aeration tank is discharged out through a reverse flushing storage tank. The device provided by the invention has the advantages that in the device, through the self interception effect of the filling material per se and the bioflocculation effects of surface biomembranes, the outlet water SS is very low and does not exceeds 10mg / L generally; due to the periodical reverse flushing, the biomembranes can be effectively updated; for specific performance, the biomembranes are thinner; the activity is higher.

The invention discloses a fortified straight-flow biological contact oxidation pond and an operation method thereof. The oxidation pond comprises a pond body, the cross section of the pond body is rectangular, the length-width ratio is (1:1)-(2:1), the pond body is internally sequentially provided with an aeration area, a packing layer and a water stabilization layer from bottom to top, and the height ratio of the aeration area, the packing layer and the water stabilization layer is 1:4:1.2; the outer side of the pond body is provided with a water inlet pipe at the aeration area and provided with a water outlet pipe at the water stabilization layer, and the bottom of the pond body is provided with a blowdown pipe; an aerator is arranged in the aeration area; a packing frame fixed on the inner wall of the pond body is arranged in the packing layer, and packing is hung on the packing frame; and a plant growth frame fixed on the inner wall of the pond body is arranged in the water stabilization layer. When the oxidation pond is operating, aquatic plants are planted on the plant growth frame in the water stabilization layer so as to form plant fortification, therefore, the sewage purification effect is enhanced, the SS of effluent water can be significantly reduced, a situation that the effluent water is turbid is avoided, the sewage retention time is reduced, and the purification efficiency is improved; and the oxidation pond is small in occupied space, convenient to operate and maintain, and low in investment and operation costs.

The invention relates to a method for improving the separation efficiency of a sludge gravity concentration tank. According to the method, spoilers are arranged through optimized coagulant adding positions and a pipeline mixer. According to the sludge gravity concentration tank, a sludge inlet pipe is connected with a coagulant dosing device; the coagulant dosing device comprises a coagulant dosing pump, a coagulant dosing pipe and the pipeline mixer; the pipeline mixer comprises a mixer barrel and the spoilers, the spoilers are evenly distributed on the inner wall of the cylindrical mixer barrel, the mixer barrel is fixedly connected with the sludge inlet pipe, an inlet of the mixer barrel is connected with the coagulant feeding pipe, and the coagulant feeding pipe is connected with the coagulant feeding pump. The beneficial effects are that the contact time of a coagulant and sludge is prolonged, the utilization rate of the coagulant is increased, and the coagulation reaction effectis enhanced through the optimized coagulant adding positions and the arranged spoilers.

The papermaking waste water treating process includes first grate filtering waste water to eliminate floated matter, treating in regulating pond, pumping into No. 1 and No. 2 transfer line reactor, depositing in the depositing pond, dewatering sludge in a belt pressure filter, coke filtering of the clear water from the upper layer of the depositing pond inside the filtering coke tower. The key points of the papermaking waste water treating process includes adding 2-10 wt% concentration sewage treating agent comprising aluminum sulfate, ferric sulfate, magnesium sulfate and lithopone into waste water in the No. 1 transfer line reactor, and adding 0.05-0.2 wt% concentration polyacrylamide solution into waste water in the No. 2 transfer line reactor, with the added amount of the sewage treating agent and the polyacrylamide solution each being 0.03 % waste water weight. The present invention may be used widely in various kinds of papermaking waste water.

The invention provides an integrated powder-loaded enhanced biochemical water treatment device. The device is cylindrical and includes a central cylindrical aerobic zone and an anoxic / precipitation zone surrounding the aerobic zone. The anoxic / precipitation zone includes anoxic The sludge in the sedimentation zone is circulated to the lower part of the aerobic zone through the channel formed by the sliding mud plate and the partition partition, and the sludge in the lower part of the aerobic zone is circulated to the anoxic zone through the reflux system. In the oxygen zone, the sludge completes the synchronous reaction of nitrification and denitrification in the aerobic zone. The integrated powder-loaded enhanced biochemical water treatment device of the present invention combines the powder carrier with the biological filler, and combines the biofilm method with the activated sludge method, which overcomes the low sludge concentration and poor biochemical effect of the traditional biochemical technology. , The disadvantages of large floor area and many single structures. Each reaction unit is closely combined in space, the pool body is built together, the head loss is small, and it has the advantages of high sludge concentration, good treatment effect and small device volume.

The invention provides an integrated composite stereo constructed wetland system and a sewage processing method. The system comprises a wetland bed body possessing water-resisting function, and a surface flow pool and a subsurface flow pool which are constructed in the internal space of the wetland bed body; water-purification plants are grown on the surface flow pool, and also the surface flow pool is provided with a water inlet device; the surface flow pool and the subsurface flow pool are in connection via a reclaimed-water collection distribution device; and the subsurface flow pool is provided with a clean-water discharge device. The upper part of the internal space of the wetland bed body is the surface flow pool, and the lower part is the subsurface flow pool. The surface flow pool and the subsurface flow pool are respectively filled with a surface-flow pool matrix and a subsurface-flow pool matrix, the surface-flow pool matrix is used to fix the root of the water-purification plant and adsorb aerobic and facultative microbes, and the subsurface-flow pool matrix is used to adsorb hypoxic and anaerobic microbes and denitrifying bacteria. The provided sewage processing method employs the above wetland system for purifying sewage. The wetland system possesses the advantages of being small in land occupation area, good in discharged water quality and the like.

The invention provides a powder carrier-enhanced biochemical treatment integrated device, the device is separated by an inner compartment and an outer compartment to form the upper half of the aerobic zone, and the device is cylindrical, including a central cylindrical aerobic zone, surrounded by The anoxic / sedimentation zone of the above-mentioned aerobic zone, the anoxic / sedimentation zone includes an anoxic zone with a water inlet, a sedimentation zone located on the upper part of the anoxic zone, and a bottom pass connecting the anoxic zone and the aerobic zone. The sewage nitrification liquid in the orifice and the aerobic zone is returned to the submerged internal return pump in the anoxic zone. The device provided by the invention overcomes the traditional biochemical technology with low sludge concentration, poor biochemical effect and large floor area by adding powder carrier in the central aerobic zone and increasing the attachment area of ​​the activated sludge method in the aerobic zone , the disadvantage of many single structures. Each reaction unit is closely combined in space, the pool body is built together, the head loss is small, and it has the advantages of high sludge concentration, good treatment effect and small device volume.

A method for solid-liquid separation of biogas slurry, using a conditioner to transfer some polar insoluble substances in the biogas slurry from the solid-liquid phase to the organic phase, thereby reducing the stability of the original colloidal system of the biogas slurry and improving the solid-liquid separation of sludge performance. Further, the conditioner is effectively recovered and recycled. It includes the following steps: mixing biogas slurry and conditioner, stirring and extracting reaction; separating solid and liquid from biogas slurry through mechanical centrifugation; realizing effective recovery of conditioner in supernatant and biogas residue after centrifugation, and then improving the solid content of biogas residue , Reduce the SS of the effluent and complete the recycling of the conditioner at the same time. Finally, the effluent SS can be lower than 600mg / L, the solvent recovery rate is more than 90%, and the moisture content of the mud cake is lower than 60%. The method reduces the consumption of coagulation / flocculation conditioning chemicals in the traditional biogas slurry solid-liquid separation process, and also reduces the energy consumption in the biogas residue incineration process, and has important social and environmental benefits and broad market application prospects.

The invention provides an advanced sewage treatment device, which comprises a shell, a filtering material, a filtering material supporting plate, a water collection tank, a water distributor, a water distributor fixing frame, a water outlet pipe, a water inlet pipe, a chemical feed pipe and a dredge pipe, wherein the filtering material is arranged in the shell; the water distributor is connected with the water inlet pipe; the water outlet pipe is arranged on the shell; the water inlet pipe is arranged at an upper opening end of the shell; the dredge pipe is arranged at the bottom of the shell; the advanced sewage treatment device is characterized in that the filtering material is arranged on the upper part in the shell and is supported by the filtering material supporting plate; an oblique plate and an oblique plate supporting frame are arranged below the filtering material; the bottom of the oblique plate is positioned on the oblique plate supporting frame; a chlorine dioxide pipe vertically and downwardly leads into and penetrates through the filtering material from the upper part of the shell; the lower end of the chlorine dioxide pipe is connected with a perforated pipe; and the perforated pipe is positioned between the oblique plate and the filtering material. According to the advanced sewage treatment device, coagulation, oblique plate sedimentation, chlorine dioxide oxidation, filtration and adsorption effects are finished in a same tank; and the advanced sewage treatment device has the advantages of rational and compact structure, good effluent quality, high treatment efficiency, low operation cost, high adaptability and easiness in operation and management.

The invention discloses a coupling type biological denitrification method which comprises the following steps: enabling sewage to enter a front-end anoxic pool, mixing with returned sludge and mixed liquid and carrying out denitrification reaction; entering an aerobic pool, removing an organic matter through aeration, realizing the nitration reaction and synchronizing the nitration reaction and the denitrification reaction; entering a rear anoxic pool and carrying out denitrification reaction again; and alternately entering a first SBR (Sequencing Batch Reactor) pool and a second SBR pool, treating a surplus carbon source generated in the denitrification or deeply nitrating and simultaneously carrying out sludge return. The invention also provides a coupling type biological denitrification system. The coupling type biological denitrification method and the coupling type biological denitrification system have the beneficial effects that pre-denitrification plus aerobic denitrification and CODcr degrading plus post-denitrification plus sequencing batch aerobic reaction are adopted to overcome the influence of an excessive denitrification carbon source on outlet water, the nitrogen removal efficiency is greatly improved, the nitrogen removal effect is remarkable, and the coupling type biological denitrification system is suitable for degrading high ammonia nitrogen and high COD (Chemical Oxygen Demand) wastewater and particularly has an remarkable effect on coal chemical industry wastewater treatment.

The invention relates to a treatment device and a treatment method for simultaneously removing high-concentration SS, fluoride, sulfate, arsenate and COD in desulfurization wastewater. The characteristics of the treatment device are: the overflow port of the sedimentation tank is connected to the No. 1 delivery pump through a pipeline, the stirring device of the primary clarifier is installed on the primary clarifier, and the No. 2 delivery pump is connected to the third reaction tank through a pipeline. The steps of the treatment method are as follows: after desulfurization wastewater enters the sedimentation tank for primary precipitation, the effluent enters the first reaction box and the second reaction box for chemical-coagulation sedimentation reaction in turn, and then enters the primary clarifier for solid-liquid separation; the supernatant liquid Introduced into the third reaction box, and the reacted mixed liquid then entered the flocculation box and the secondary clarifier in turn, respectively for flocculation reaction and clarification and concentration; the supernatant liquid was introduced into the filtration device for filtration, and the pH of the effluent was adjusted to 6-9. The present invention simultaneously removes high concentrations of SS, fluoride, sulfate, arsenate and COD in desulfurization wastewater economically and effectively.

The invention relates to a wastewater treatment method and discloses a process control method of a modified sequencing batch reactor (MSBR) system. The process control method includes that sequencing batch reactor (SBR) reaction tanks are operated alternately and intermittently and correspondingly regulate the process control method according to ambient temperatures or inflow water quality conditions. The process control method of the MSBR system has the advantages of being concise in operation modes, sufficient in aeration time and pre-setting time and capable of facilitating sediment and reducing suspended substance (SS) in discharged water, and the whole system performs continuous water inflow and continuous backflow to guarantee full mixing of backflow sludge and inflow water, so that automatic control and daily production management are facilitated; and the process control method is capable of achieving the best treatment effect under conditions of different temperatures and different inflow water qualities.