45results about How to "Short startup cycle" patented technology

The invention provides a horizontal type three-phase biological fluidized bed and a sewage treatment method thereof. According to the horizontal type three-phase biological fluidized bed, a water inlet and water distribution anaerobic zone, a high-load facultative biological treatment zone, a baffling zone, a low-load aerobic biological treatment zone and a settling pond are horizontally arranged from a water inlet end to a water outlet end, and moreover suspended biological stuffing layers are arranged inside other zones except the baffling zone. Sewage is fed into the water inlet and water distribution anaerobic zone, in an anaerobic environment, BOD organic maters in the wastewater are converted into a fermentation product by facultative fermentation bacteria, polymerized phosphate stored in the cells is decomposed by phosphorus-accumulating bacteria, and then the sewage is fed into the high-load facultative biological treatment zone to remove COD and nitrogen, is further fed into the low-load aerobic biological treatment zone to reduce phosphorus in the effluent, and is finally settled, clarified and filtered by the settling pond so as to obtain clean water. As all process steps are accomplished in one same horizontal pond, the land is saved, the phenomenon that equipment such as a pump and a valve is blocked when dispersed type stuffing is adopted to treat sewage is avoided, and a carrier is prevented from loss, piling or hardening.

An anaerobic suspension-bed reactor for biologically treating sewage is composed of a biologic reaction unit whose main component is a biologic reaction tower with water distributor and three-phase separator, and a marsh gas circulation unit consisting of march gas buffering cabin, pneumatic pump and gas distributor.

The invention discloses a method for processing breeding wastewater through multi-biological-phase zoogloea packing. The method includes the following steps of firstly, culturing and domesticating multi-biological-phase zoogloea; secondly, processing livestock breeding wastewater. Through the extra-large cation exchange capacity and microbial affinity of the multi-biological-phase zoogloea packing, the perfect combination of physical adsorption removal and biological degradation removal is achieved, and the method has outstanding denitrification capacity; a stable microbial system is formed, the microorganism concentration is tens times higher than that of an activated sludge process, impact load resistant capacity is strong, and basically no residual sludge exists. Running and operating are quite simple and reliable; compared with a conventional biochemical technology, investment is basically equal to or slightly higher than that of other processes, and running cost is reduced by about 90%.

The invention relates to a method for realizing semi-nitrosation under a condition of room-temperature municipal sewage, and belongs to the field of municipal sewage treatment and reuse. The invention aims at solving the problems of high-energy and high-material consumption during the prior biological denitrification for municipal sewage and providing proper water input for applying anaerobic ammoxidation process to the denitrogenation treatment for municipal sewage. The method is successfully applied for the first time to the biological treatment of the semi-nitrosation of municipal sewage through control of low dissolved oxygen and auxiliary addition of part of ammonia salts under the condition of room-temperature municipal sewage, thereby ensuring the application of the high-efficiency low-consumption anaerobic ammoxidation process to the biological denitrification of municipal sewage. The method has the advantages of short reactor starting cycle, simple operation, stable system running, good sewage treatment effects, low cost, and the like.

Disclosed is a high-efficiency and low-consumption biological denitrogenation method of urban sewage, which belongs to the fields of urban sewage disposal and resource utilization. The method aims to solve the problem of high energy and material consumption of the current urban sewage biological denitrogenation method. The method comprises: adopting a biomembrane filter chamber system under normal temperature, making the same biomembrane filter chamber system adapt to the respective growth metabolism condition of nitrite bacteria and anaerobic ammonium oxidation bacteria through adjusting the equipment operation parameters of a reactor, rapidly realizing the successful startup of the urban sewage anaerobic ammonium oxidation biological autotrophic denitrogenation reactor, and enabling the biomembrane filter chamber system to achieve the purpose of stabilizing the denitrogenation with high efficiency and low consumption through controlling the operational parameters of the reactor and relying on the synergic denitrogenation function of nitrite bacteria and anaerobic ammonium oxidation bacteria. The method applies a new discovery in science of a simple process of anaerobic ammonium oxidation biological autotrophic denitrogenation to the high-efficiency and low-consumption denitrogenation treatment of urban domestic sewage for the first time, and has the advantages of short startup period of the system, stable running, excellent effects of sewage disposal and low cost.

The invention relates to an A/O-SBBR-oxidation pond-constructed wetland treatment piggery methane fluid system. An adjusting pond, an anoxia pond, an aerobic pond and a secondary sedimentation pond are sequentially arranged before a sequencing batch biofilm reactor (SBBR), an oxidization pond and a three-stage constructed wetland comprising canna indica, reed, typha orientalis, cane shoots and other aquatic plant are sequentially constructed behind the SBBR; the system has a stable treatment effect, and is strong in anti-impact load capacity, simple to operate, and low in running cost. The operating mode and time parameters of the SBBR are as follows: water inflow lasts for 1h, aeration lasts for 3.5h, anoxia environment lasts for 2h, aeration lasts for 3.5h, sedimentation lasts for 1h, and drainage lasts for 1h. The effluent index of the piggery methane fluid meets the requirement of pollution discharge standard of livestock and poultry industry (GB 18596-2001) after being treated by the combination technology.

The high-efficiency water treatment method for aerobic cycle biological expansion bed comprises: using the distribution gas device on reaction tower bottom and light biological particle of aerobic bed to take water treatment to biological reaction with aerobic biological reaction tower as main; and controlling the flow rising speed in tower to achieve need expansion state. The opposite reactor comprises a biological reaction unit, a water cycle unit with a collection pond for output water and cycle pump, an aerobic bed unit. The advantages of this invention include: high organic load, short startup period and stable running.

The invention discloses a device and a method for starting and stably maintaining municipal sewage partial nitrification, which belongs to the field of municipal domestic sewage treatment. The devicemainly comprises an original water tank, a municipal sewage partial nitrification device, a complete nitrification device, a sludge treatment device and a sludge return device. The method utilizes therestore rate difference between AOB and NOB after processing the activated sludge by high temperature to start partial nitrification, and combined with the sludge treatment device to improve the operating stability of partial nitrification, so as to start and stably operate the municipal sewage partial nitrification. The device is simple in operation, high in degree of self-control, which can save aeration rate for partial nitrification and have low sludge yield, so as to reduce the processing cost.

The invention relates to a waste water purifying equipment. The invention provides a biological stuffing shaking bed in which biological stuffing composed of fibers attached with microorganisms easily are arranged. The shaking bed of the invention overcomes the technique defects of general wastewater treatment devices, and can realize the stable treatment effect and remove the organic matters, nitrogen, phosphorus and chroma in water, and the range of application is wide.

The invention discloses a combined process for treating high-ammonia-nitrogen wastewater. The method comprises the following steps: carrying out solid-liquid separation; carrying out biological rotating disc pretreatment; carrying out biological contact oxidation deep treatment; and carrying out coagulating sedimentation;a biological rotating disc pretreatment unit of a treatment system adopted inthe process is supported on a same rotating shaft by adopting a plurality of rotating discs; each rotating disc is driven to rotate by planet row reduction gearboxes with different transmission ratios; the rotating speed of the rotating disc is gradually reduced from the water inlet end to the water outlet end; the biological rotating disc pretreatment unit also adopts a blast aeration device toadjust the dissolved oxygen concentration of the high-ammonia-nitrogen waste liquid; a pretreatment system has higher pollutant load; a plurality of contact oxidation fillers are arranged in the biological contact oxidation advanced treatment unit; by means of the electrolysis and biological membrane degradation characteristics of iron-carbon micro-electrolysis-activated carbon fiber combination,the nitrogen and phosphorus removal efficiency of the system is enhanced, particularly when low-carbon high-ammonia-nitrogen wastewater (biogas slurry) is treated, serious imbalance of the C/N ratio in the biogas slurry is overcome, and the treatment efficiency of the high-ammonia-nitrogen wastewater is improved.

The invention discloses a rapid starting method for an SNAD process in an upflow micro-aerobic membrane bioreactor. In the upflow micro-aerobic membrane bioreactor, low C/N ratio wastewater is used asinfluent, an operation mode with a high sludge concentration of 16.0 g/L and a low sludge load of 0.064 kg COD/kgSS is used at the initial stage of starting, a ratio of ammonia nitrogen to nitrite nitrogen in effluent is controlled within a certain range by mainly adjusting the DO, the temperature, the alkalinity and the like, and the residence mode is timely shortened to increase the nitrogen load and the carbon load so as to rapidly start an SNAD process, such that the anaerobic ammonium oxidation particles are coexisted with the floc sludge. According to the present invention, the system can efficiently and synchronously remove carbon and nitrogen, has the COD removal rate, the NH4<+>-N removal rate and the TN removal rate of 89%, 96% and 86%, and further has advantages of small occupation area, simple operation and low energy consumption.

The invention provides a composition for starting a household garbage dry anaerobic fermentation system and a starting method. The composition comprises a fermentation inoculum and a nutritional structure, wherein the fermentation inoculum is solid activated sludge, and the nutritional structure is cured compost or straws and/or bits of wood, and the mass ratio of the fermentation inoculum to the nutritional structure in the composite is 1 to (2 to 1). The materials of the composition for starting provided by the invention are applied to a large-size household garbage dry anaerobic fermentation system, especially a large-size household garbage dry anaerobic fermentation system of which the effective volume of a fermentation tank is larger than 3,000 cubic meters; the starting success rate is high, the starting period is short, the whole starting process can be finished within 6 weeks, and very high economic benefit is brought while quick starting is realized.

The invention discloses an automatic roasting device of an electrolytic bath, comprising a temperature sensor, a temperature-controlled meter, a PID (Piping and Instruments Diagram) combustion controller, a pulse combustion controller, a main fuel pipeline, a control valve bank of the main fuel pipeline, a gas storing tank of the main fuel pipeline, a branch fuel pipeline, a control valve bank of the branch fuel pipeline, a combustion-supporting air device, a branch combustion-supporting air pipeline and a control valve bank of the branch combustion-supporting air pipeline. The automatic roasting device has the advantages of changing a method for starting the electrolytic bath by electrically heating and roasting instead of starting by roasting and heating the fuel, not only having short starting period, small energy consumption and cost saving, but also directly roasting and heating the fuel, being easy to adjust and control the temperature rise speed of the electrolytic bath in the starting process, keeping the uniform distribution of the required temperature, effectively overcoming the defects of large temperature gradient, small thermal shock and small expansion stress when a high-temperature liquid enters the electrolytic bath, avoiding the problem of influencing service life of the aluminum electrolytic bath due to nonuniform heating and the damage of a cathode carbon and greatly prolonging the service life of the electrolytic bath.

A method for producing biogas from palm oil manufacturing wastewater comprises the steps: preparing an inoculum using wastewater sludge (110), preparing a raw material (120), and performing multi-stage fermentation to produce a variety of marsh gases. The multi-stage fermentation comprises an acidification reaction (130) for producing bio-hydrogen, and a methanogenesis reaction (140) for producing bio-methane. The multi-stage fermentation is carried out in a separate up-flow anaerobic sludge fixed membrane reactor for each reaction. Furthermore, an acidification reaction (130) is carried out by slowly mixing palm oil manufacturing wastewater with a feedstock into a first reactor with acid-producing bacteria to produce bio-hydrogen and wastewater, whereby the wastewater is used as a feedstock for producing methane in a methanogenic reaction (140). The methanogenic reaction (140) is carried out by feeding the inoculum (110) and delivering the wastewater into a second reactor having methanogenic bacteria for producing methane.

The invention relates to a mixed membrane biological method anaerobic fermentation reactor for kitchen wastewater, and a process thereof. The mixed membrane biological method anaerobic fermentation reactor comprises a tank body, the tank body is internally provided with an effluent weir, a three-phase separation zone, a second reaction zone, a first reaction zone, a biogas distribution device, a water distributor and a sludge discharge system in sequence from top to bottom; the second reaction zone and the first reaction zone are both biological filler reaction zones; the biogas distribution device is provided with a gas inlet pipe; the water distributor is communicated with a water inlet mixer outside the tank body, and the water inlet mixer is communicated with a water inlet pipe; a biogas collecting pipe is arranged at the top of the tank body and is connected with the gas inlet pipe; an upper circulating pipe and a middle circulating pipe are further included, and the middle circulating pipe is further communicated with the water inlet mixer; and the wastewater in the tank body reaches the water inlet mixer through the middle circulating pipe, is mixed and then returns to the tank body through the water distributor to finish circulation. The reactor and the technology can be used for treating the kitchen leachate with high concentration and high suspended solids.

The invention discloses a system and a method for latex paint wastewater treatment. The wastewater treatment system comprises a constructed grid well, a sand settling basin, an open type electronic flocculator, an IC anaerobic reactor, an A/O2 biochemical reactor, a sloped tube settling basin, a sludge basin, a filter press, a ferro-manganese filter, a vertical electronic flocculator, a lift pump and a settling separation basin which are connected. In use, latex paint wastewater flows through the constructed grid well to remove granular impurities, then flows into the sand settling basin to remove granular filler, then flows into the open type electronic flocculator for emulsion breaking, layering and settlement, and then flows into the A/O2 biochemical reactor for biochemical treatment; the biochemical effluent water flows through the sloped tube settling basin for removing sludge; the obtained clear water flows into the vertical electronic flocculator for further electronic flocculation treatment; and the effluent water is filtered and then reused or discharged. The system and the method disclosed by the invention can effectively break emulsion, and remove COD, suspended matters and non-degradable substances in wastewater, and improves biodegradability; and the biochemically treated wastewater reaches discharge or reuse standards. The system and the method have the advantages of high treatment efficiency, and stable effluent.