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

The invention discloses a processing method of coking steaming ammonia wastewater. The processing method of the coking steaming ammonia wastewater comprises pretreatment of coking steaming ammonia wastewater and biochemical treatment of the coking ammonia wastewater. The pretreatment of the coking steaming ammonia wastewater uses an adjusting pool, an internal electrolysis reactor, a Fenton oxidation pond and a coagulative precipitation tank. A sequencing batch membrane bioreactor technology is adopted by the biochemical treatment, and working procedures of inflow, unused-leaving, reacting and discharging are sequentially performed according to a time period. The processing method of the coking steaming ammonia wastewater can effectively remove persistent organic pollutants and ammonia nitrogen, strengthen effluent quality, and reduce operational and investing costs of equipment.

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 treatment method with denitrification effect and special equipment. The method comprises the steps of cultivating and acclimating activated sludge, treating target sewage, and sludge disposal. The special equipment includes a tower body, which is divided into a reaction zone at the bottom of the tower, an aerobic nitrification zone in the middle, and a three-phase separation zone at the top. The beneficial effect of the invention is that the sewage treatment effect is good, the tower design occupies a small area, the sludge particle formation effect is good, and the denitrification effect is good, and the nitrification liquid circulation and the sludge circulation do not need external power, which saves costs.

The invention relates to the field of wastewater treatment systems, and especially relates to a low-concentration refractory chemical wastewater treatment method and system. The method comprises the following steps: collecting and adjusting wastewater, and adding activated carbon powder and magnetic iron powder into a pool; carrying out heterogeneous catalytic oxidation: carrying out heterogeneouscoupling catalytic oxidation through ozone, hydrogen peroxide, activated carbon powder and magnetic iron powder; carrying out biological adsorption oxidation; and carrying out magnetic coagulative precipitation. According to the low-concentration refractory chemical wastewater treatment method, physicochemical and biochemical combined treatment is adopted, the activated carbon/magnetic iron powder penetrates through the whole system process, the whole-process adsorption micro-electrolysis environment is achieved, the treatment effect is enhanced, pollutants are enriched in a limited mode by adding the activated carbon/magnetic iron powder into the water collection adjusting tank, and subsequent stage treatment is facilitated.

The invention discloses a method for treating sludge digestion liquid by coupling short-cut nitrification/anaerobic ammonia oxidation-fermentation with short-cut denitrification/anaerobic ammonia oxidation and a device thereof, and belongs to the field of biochemical treatment of sludge digestion liquid. The method comprises the following steps: after sludge digestion liquid enters an SBR, removing organic matters in raw water and residual nitrate nitrogen in the last period through heterotrophic bacteria and denitrifying bacteria by adopting a pre-anoxic/aerobic/anoxic operation mode, removing part of total nitrogen in the raw water through ammonia oxidizing bacteria and anaerobic ammonium oxidizing bacteria on a biological membrane, and enabling an effluent to enter a UASB reactor, and further reducing the total nitrogen in the effluent through the combined action of hydrolytic acidification bacteria, denitrifying bacteria and anaerobic ammonium oxidation bacteria in the granular sludge. According to the invention, an additional carbon source is not needed, the aeration energy consumption is saved, the emission of greenhouse gases can be reduced, the problem of unstable denitrification effect of the system caused by easy loss of anaerobic ammonia oxidation sludge is solved by utilizing the biological membrane and the granular sludge, the denitrification load and stability of the system are improved, and the deep denitrification of the sludge digestion liquid and the reduction and recycling of the sludge are realized.

The invention discloses a waste incineration power plant leachate treatment system and treatment method. The system comprises an adjusting tank, an anaerobic device, an anaerobic water production tank, an AMBR membrane device, a membrane advanced treatment device and a water producing tank, and further comprises a sludge tank and a concentrated solution collecting tank; the anaerobic device and the AMBR membrane device are connected with the sludge tank through pipelines respectively, and the membrane advanced treatment device is connected with the concentrated solution collecting tank througha pipeline. The system and method have the advantages that the yield of the concentrated solution is low, the technological process is short, ammonia nitrogen in leachate is recycled as a denitrationreducing agent after being concentrated and enriched, the pollutant treatment cost is reduced, resource recovery is achieved, and material consumption in the flue gas denitration stage is reduced.

The invention belongs to the technical field of industrial wastewater treatment and discloses equipment and technology for recycling wastewater containing oil and surfactants. According to the technology, substances such as oil substances, the surfactants and the like resulting in membrane fouling blockage in the wastewater are removed by electrochemical equipment, and the purpose of wastewater recycling is achieved by coupling with membrane devices. The technology has the characteristics of occupying a small area, being good in treatment effect, short in time, free of secondary pollution andsimple and convenient to operate and the like, and therefore, the broad application prospect is provided for recycling of the wastewater containing oil and the surfactants.

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 discloses a low-energy-consumption rapid biochemical sewage denitrification process. The method comprises the steps: step 1, sewage enters an aerobic section, the sewage and aerobic microorganisms are subjected to a denitrification reaction and a short-cut nitrification and denitrification reaction in the aerobic section, a sludge-water separator is further arranged in the aerobic section, sludge obtained after sludge-water separation continues to remain in the aerobic section, and separated supernatant enters the next step; and step 2, the supernatant separated from the aerobicsection enters an aerobiotic section, nitration reaction is carried out on the supernatant and aerobiotic microorganisms in the aerobiotic section, clear water physically separated from one part of anitration liquid after the nitration reaction is used as system effluent, and the other part of the nitration liquid flows back to the aerobic section. According to the process, the sewage treatment efficiency is improved, and the energy consumption is low because the hydraulic retention time of the aerobiotic section is short.

The invention relates to the field of industrial wastewater treatment, and particularly relates to an easily-degradable high-concentration industrial wastewater treatment method and system. The systemcomprises a pretreatment section, a high-concentration wastewater biochemical treatment device, a magnetic coagulation sedimentation tank and a disinfection tank, wherein magnetic iron powder and activated carbon powder are added into a biological contact oxidation tank of the high-concentration wastewater biochemical treatment device, an aerobic filler and an aeration system are installed, and the concentration of dissolved oxygen in the tank is controlled to be 2-4mg/L. The action of the magnetic iron powder and the activated carbon powder runs through a biological and chemical reaction system, an adsorption micro-electrolysis environment can be formed, a huge specific surface area can be provided for microorganism growth, the sedimentation rate of flocculent sludge is increased, sludgeloss and the occupied area of the process are reduced, and the biochemical treatment effect is guaranteed.