33results about How to "SS low" patented technology

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 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 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.