32results about How to "Small process footprint" patented technology

The invention discloses a whole process low-oxygen aeration SBMBBR (sequencing batch moving bed biofilm reactor) synchronous denitrification and dephosphorization method and belongs to the technical field of sewage treatment. The method achieves synchronous denitrification and dephosphorization by adding suspension filling into the traditional SBR (sequencing batch reactor) to form an SBMBBR, controlling an organic load, a nitrogen and phosphorus load and a DO (dissolved oxygen) value in the reactor, performing staged culture and acclimation on an inoculum, and performing synchronous nitrification-denitrification and denitrification-dephosphorization on enriched denitrification polyphosphate accumulating bacteria and aerobic polyphosphate accumulating bacteria and by other approaches. The method achieves the synchronous denitrification and dephosphorization for low C / N (carbon / nitrogen) ratio sewage in the same reactor under a whole process low-oxygen aeration condition, has the advantages of a simple technology, simple operational control, a high sludge load, small floor area, low energy consumption, no need of an additional carbon source, stable denitrification and dephosphorization effects and the like. The method has very practical significance in simplifying the traditional denitrification and dephosphorization sewage treatment technology, improving the denitrification and dephosphorization effects and reducing the floor area and energy consumption, and is a sewage treatment technology with good application prospects.

The present invention discloses a hydrolization and acidification - anaerobism and aerobism coupling biochemical degradation system, which belongs to the technical field of environment engineering and industrial waste water disposal. The system is used for disposing organic waste that is difficult to be degraded. The biochemical degradation system consists of two serially connected airlift internally circulating biological fluidized beds. The front airlift internally circulating biological fluidized bed is an anaerobe fluid bed which adopts micro-aeration operation and carries out hydrolization and acidification processing; and the rear airlft internally circulating biological fluidized bed is an anaerobism and aerobism coupling biological fluid bed which is constructed by filling macropore carriers and carries out the complete degradation of organisms. The organic waste water which is difficult to be degraded enters the anaerobic fluid bed first, and enters the anaerobism-aerobism coupled biological fluid bed after the hydrolization and acidification processing so as to be completely degraded. The system achieves high efficiency and quick coupling of the anaerobe degradation and the aerobe, and has the characteristics of high disposing efficiency, short residence time, small floor space, low investment, low running cost and so on. The method can be applied to the sequencing batch type disposal process, and can be applied to the continuous flow type disposal process as well.

The invention relates to an aerobic granular sludge sewage processing method having nitrogen removal effect and special-purpose equipment thereof. The method comprises the steps of culture and domestication of activated sludge, treatment of target sewage, and treatment of the sludge. The special-purpose equipment comprises a tower body, wherein the tower body is divided into three-phase separation zones of a tower bottom reaction zone, a central aerobic nitrification zone, and a top. The method has the beneficial effects that the sewage processing effect is good, the land occupation area of the tower is small, the granular sludge forming effect is good, nitrogen removal effect is good, external power is not required for circulation of a nitrogen solution and circulation of the sludge, and the cost is saved.

The invention relates to a boiler blowdown water recycling treatment technology based on ion exchange and chemical precipitation. The technology comprises the following steps that boiler blowdown water is filtered by an efficient fiber filter, so that the turbidity of the filtered and purified blowdown water is decreased to be smaller than 1 NTU, and an SDI value of the filtered and purified blowdown water is smaller than 3; the filtered and purified blowdown water is delivered to an ion exchanger, effluent water exchanged by anion exchange resin enters a boiler raw water tank, and after the anion exchange resin is saturated, regenerating is conducted by adopting a regenerating agent, so that an exchange function of the anion exchange resin is recovered; coagulation treatment and flocculent precipitation treatment are conducted on regenerated waste liquid and backwashing waste liquid of the ion exchanger by adopting a coagulant and a flocculant. Compared with the prior art, the high-concentration waste liquid or regenerated liquid achieves solid-liquid separation by adding a small quantity of the coagulant and a coagulant aid through the coagulation effect and the flocculent precipitation effect while high-quality recycling on the boiler blowdown water is achieved through ion exchange, removal of phosphate in the boiler blowdown water is completed, and zero discharge of the boiler blowdown water is achieved.

The invention relates to a boiler blow-down water recovery treatment process combined with reverse osmosis and chemical precipitation technologies. The boiler blow-down water recovery treatment process comprises the following steps of: regulating the temperature, pH value and suspended matter concentration of boiler blow-down water to meet inlet water requirements of a reverse osmosis system; then introducing the boiler blow-down water into the reverse osmosis system, and performing reverse osmosis treatment so as to obtain a dialysate and concentrated liquor, wherein the dialysate is used as a boiler primary demineralized water; and performing chemical precipitation treatment on the concentrated liquor by use of a coagulant and a flocculant, thereby obtaining a supernate, wherein the supernate is used as boiler raw water or make-up water for a water circulation system, so that the recovery treatment of boiler blow-down water is realized. Compared with the prior art, the boiler blow-down water recovery treatment process is capable of realizing complete zero-emission treatment of the boiler blow-down water, recovering high-quality water resources and saving the operation cost, and has the characteristics of general applicability to boiler blowdown systems, stable technical process, low cost and the like.

The invention discloses a landfill leachate treatment method. The landfill leachate treatment method comprises (1) a primary Fenton advanced oxidation process, (2) a primary aerated biological fluidized tank process, (3) a secondary Fenton advanced oxidation process, and (4) a secondary aerated biological fluidized tank process. The landfill leachate treatment method is simple to operate without complex system control; due to the adoption of a degradation method, no concentrated water is generated to cause secondary pollution; meanwhile, a membrane system does not need to be replaced so that the treatment cost can be greatly reduced.

The invention discloses a method and a device for microalgae coupled anammox autotrophic denitrification, comprising a reactor, a water inlet device and a water outlet device; the water inlet device and the water outlet device are communicated with the reactor; the reactor comprises a reaction barrel , monitor, stirring device and packing frame; the cover and body of the reaction barrel can be detachably connected; the top surface of the packing frame is fixedly installed on the top of the inner wall of the barrel, and the short-range nitrification and anammox reaction are simultaneously realized in the reactor , which can reduce the area of ​​the process, realize high-efficiency denitrification, and replace the traditional aeration method with microalgae to produce oxygen, which can reduce the energy consumption of aeration and significantly reduce the cost of sewage treatment.

The present invention is an integrated equipment for treating waste acid to produce ammonium sulfate and its operation method. The integrated equipment is a tower reactor; a tower reactor buffer section, a reaction section, an oil-water separation section, and an oil production section are sequentially arranged from the bottom of the tower to the top of the tower. and defoaming section; there is an exhaust outlet (13) at the top of the tower, and an extraction outlet (14) is arranged at the bottom of the tower. A coaxial inner sleeve is arranged in the buffer section, the reaction section and the oil-water separation section of the tower kettle. Ammonia enters from the ammonia pipeline (1) in the tower kettle, and reacts with the water inlet of the water delivery pipeline (8) and the waste sulfuric acid pipeline (6). Extraction outlet (10) is extracted. Integrating the functions of waste acid dilution, reaction and oil-water separation into one, solves the shortcomings of the traditional preparation process such as large area and complicated operation, further reduces production and operation costs, and prepares ammonium sulfate with high purity and good appearance solution to obtain ammonium sulfate crystals that meet national standards.

The invention relates to an integrated circulating fluidized bed apparatus. The upper part of an external sleeve cylinder is in a circular truncated cone structure with a thick top and a thin bottom, wherein ratio of maximum diameter to minimum diameter is 1.1-5. The lower part of the external sleeve cylinder is a cylinder in equal diameter and is connected to an internal sleeve cylinder through a screw bolt. The fluidized bed apparatus, from bottom to top, successively includes a solid collection port, a center gas distributor, an annular space gas distributor, a solid collector, and the internal sleeve cylinder. A gas outlet and a solid inlet are disposed on the upper part of the external sleeve cylinder. The center gas distributor is located right under the internal sleeve cylinder and the annular space gas distributor is located around the periphery of the center gas distributor and between the internal and the external sleeve cylinders. A gas-solid separation zone is formed in the upper part of the external sleeve cylinder. The lower part of the external sleeve cylinder is totally cylindrical in shape and is separated into a lifting zone and a circulating zone by means of the internal sleeve cylinder. The apparatus integrates a fluidized bed, a solid circulating system and a gas-solid separation system, so that the production apparatus is simplified. Gas flows in the status of plug flow, so that a gas phase and a solid phase are completely contacted and dead zone is avoided. The apparatus reduces power consumption and reduces manufacturing and producing cost.