31results about How to "Reduce aeration costs" patented technology

The invention discloses a fish-bacterium-algae-symbiotic ecological breeding system and a running method thereof. The fish-bacterium-algae-symbiotic ecological breeding system and the running method mainly aim at reducing aerating cost, improving the use efficiency of nitrogen and organisms and improving purification of breeding waste water. The system is composed of a fishpond, a photobioreactor, a membrane assembly, a light source and an aerating system, and is characterized in that aquaculture is combined with a bacterium-algae-symbiotic system and the membrane technology, the photosynthesis of microalgae continues, the dissolved oxygen concentration of processed waste water is high, healthy breeding of fishes is guaranteed, and aerating cost is reduced; due to excellent organism degradation and absorption of bacteria, the organism recycling capacity of the system is improved; due to the comprehensive synergistic effect of microalgae and microorganisms, waste water processing efficiency is improved; as microalgae absorb nitrogen substances, the nitrogen use efficiency of the system is improved; in addition, due to the adoption of the membrane technology, microalgae can be more easily harvested.

The invention relates to a sewage treatment system and a sewage treatment method for reducing greenhouse gas emission. The system comprises a moving bed biomembrane biochemical reactor MBBR, an air stripping pool and an up-flow anaerobic sludge blanket UASB which are sequentially connected, wherein bio-filler is arranged in the MBBR, an aerating head is arranged at the bottom, an intercepting screen is arranged at an upper overflowing water outlet for preventing loss of the bio-filler, a mud outlet is formed at the bottom of the UASB, a sludge return opening is formed on the upper part, and a three-phase separator and an air outlet are formed on the top. Sewage enters into the MBBR for intermittent aeration, so that accumulation of NO<2-> is realized; effluent of the MBBR enters into the air stripping pool through a peristaltic pump to remove dissolved gas in water and then enters into the UASB; denitrifying anaerobic methane-oxidizing bacteria convert NO<2-> into N2 to be removed. According to the system provided by the invention, the UASB is coupled by using the MBBR, so that actual sewage with low carbon nitrogen ratio is treated in an energy-saving and efficient manner with less secondary pollution.

The invention relates to a ceramic membrane chemical cleaning system and method which are used for cleaning a ceramic membrane in a water treatment system. The chemical cleaning system comprises an online cleaning part, wherein the online cleaning part comprises a dosing pump and a sucking pump; the dosing pump is coupled onto the ceramic membrane arranged in a membrane pool by virtue of a pipeline, so as to inject a cleaning liquid into the ceramic membrane; the sucking pump is coupled onto the ceramic membrane by virtue of a pipeline, so as to discharge water from a back absorption membrane of the ceramic membrane; and the cleaning liquid on the ceramic membrane is discharged into the membrane pool in a sucking process. The system and method which are provided by the invention can be used for solving the problems of pollution of the ceramic membrane in a water treatment process, production of secondary pollutants by the cleaning liquid in a membrane cleaning process, secondary treatment of the membrane cleaning liquid, and the like.

The invention relates to an air-electricity linkage aerating device and belongs to an aerating device in sewage treatment. A wind wheel is fixedly connected with a gear box; the gear box is fixedly connected with a tower; a wind collecting box is fixedly connected with the gear box; and a reversing device is fixedly connected with the wind collecting box. One end of a gas pipeline is fixedly connected with the wind collecting box; and the other end of the gas pipeline is fixedly connected with a reaction tank. A wind pressure transducer is fixedly connected with the interior of the gas pipeline; a first electric valve and a second electric valve are fixedly connected with the interior of the gas pipeline respectively; an electric fan is fixedly connected with the gas pipeline; and a controller is connected with the wind pressure transducer, the first electric valve, the second electric valve, and the electric fan respectively. The aerating cost can be effectively reduced by fully utilizing the wind energy on the premise of meeting the aerating requirement, and the green wind energy is fully utilized. Therefore, the stable aeration process can be guaranteed, and the power consumption in the aeration process can be effectively reduced.

The invention provides an HABR technical method and equipment for treating nitrogen-containing organic waste water with medium-low concentration. The method for treating the waste water comprises the steps that HABR compartments are inoculated with sludge for starting; the waste water sequentially flows through all the compartments, most of dissolved organic matter is degraded by anaerobic organisms, ammonia nitrogen is partially subjected to nitrosation, then an anaerobic ammonia oxidation occurs, and ammonia nitrogen is removed, or ammonia nitrogen is removed through aerobic nitrosification and anoxic denitrification; reflux is conducted on the sludge or mud and water mixed liquor in the precipitation compartment so as to keep the activity of nitrite bacteria for a long time, the sludge is subjected to reflux when shortcut nitrification-anaerobic ammonia oxidation denitrification is conducted, and the mud and water mixed liquor is subjected to reflux when shortcut nitrification-denitrification is conducted. The equipment achieving the waste water treatment method comprises a water inlet system, an HABR, a reflux system, a bath system and an aeration system. According to the method, the effect on removing organic matter, ammonia nitrogen and suspended particulate matter in the nitrogen-containing organic waste water with the medium-low concentration is good, the occupied area of the equipment is small, and the equipment has the advantages of being flexible in operation and the like.

The invention discloses a process method suitable for low-carbon-nitrogen-ratio sewage treatment. The method comprises a membrane system, a gas supply system, a water inflow and outflow system and a monitoring system; based on reasonable ecological niche distribution of functional microorganisms such as ammonia oxidizing bacteria (AOB), nitrite oxidizing bacteria (NOB), anammox bacteria (ANAMMOX bacteria) and denitrifying bacteria, a partial short-cut nitrification-anaerobic ammonia oxidation membrane aeration bio-membrane reactor (PN/A MABR) is established, and the synergistic denitrification performance of key functional bacteria in an MABR bio-membrane is improved. The PN/A MABR disclosed by the invention has the advantages of simple process, convenience in operation, low energy consumption, low sludge yield and the like, can replace partial functions of an aerobic tank, an anoxic tank and an anaerobic tank in a traditional biological denitrification process, and reduces the number and area of structures.

A control system and method for digestion of waste activated sludge (“WAS”) includes treating the WAS first at anaerobic conditions for ≦a fixed period of time and then at aerobic conditions for ≦a fixed period of time prior to either dewatering or optional anoxic conditions followed by dewatering, supplying air to initiate aerobic conditions when a predetermined set point for maximum ammonium nitrogen has been reached within the fixed anaerobic time, and initiating dewatering or optional anoxic conditions followed by dewatering when a predetermined set point for minimum ammonium nitrogen and optional standards for vector and pathogen reduction are met within the fixed aerobic time, the method and system including monitoring either consumption of soluble alkalinity or orthophosphate reduction or both for maximum orthophosphate reduction within aerobic time.

The invention relates to a panel air lift circulation type photosynthetic microorganism culture device. A box is composed of a supporting part and a glass panel installed on the supporting part. Multiple reactor units sequentially connected in series are arranged in the box. Every two adjacent reactor units are separated through a connecting baffle installed on the supporting part. At least one aerating device is installed on the bottom in each reactor unit. One guide plate installed on the glass panel is arranged above each of the two ends of each aerating device. Each aerating device in each reactor unit communicates with a gas inlet tube. Gas enters the reactor units through each aerating device. A liquid outlet is formed in the bottom of each reactor unit. A glass cover plate provided with ventilation holes is connected to the top of the box in a sealed mode. A gap exists between each connecting baffle and the glass cover plate, and every two adjacent reactor units communicate with each other through the corresponding gap. The panel air lift circulation type photosynthetic microorganism culture device has the advantages that the cost is low, temperature control and cleaning are easy, energy consumption is low, photosynthetic efficiency is high, and the service life is long.

The invention discloses a wastewater treatment method, and specifically in particular relates to an upgrading treatment method for a sewage treatment plant in a park based on a membrane coagulation reactor-ozone-biological activated carbon technique. The method comprises the following steps: introducing wastewater of the park after pretreatment to an MCR (Membrane Chemical Reactor) system to befor treatinged, so that the turbidity of contributed water is less than or equal to 0.5NTU (Number of Transfer Units) and accords with some other indexes; then, oxidizing the contributed water of the MCR system in an O3 oxidizing system; introducing the contributed water of the O3 oxidizing system to a BAC (Basic Aluminum Chloride) system, and remaining the water treated in the BAC system for 1-5 hours; and thoroughly decomposing pollutants in wastewater through synergistic effect of activated carbon adsorption and micro-biological degradation, and so that the contributed water stably contributing water to meets the discharge demands. The method disclosed by the invention has the advantages that the operational stability of the system is improved; ozone tail gas is used for aeration of the BAC system, so that the tail gas treatment problem is solved; the aerating efficiency of the BAC system is improved; the system is in modular configuration, is automatically controlled and strong in maintainability.

The invention discloses an aeration device based on Fibonacci sequence arrangement and a use method. The aeration device comprises a control end, aeration pipelines and aeration discs. The aeration pipelines are connected with the control end. The plurality of aeration discs are mounted on the aeration pipelines, and the number of the aeration pipelines is at least one. The intervals of the aeration discs on the aeration pipelines are arranged in a Fibonacci sequence. The control end is arranged near a pollution source. The use method applied to the aeration device comprises the following step of: S1, adjusting the placement positions and the number of the aeration pipelines according to the width and the depth of a river channel. The step comprises the following sub-step of: S101, mounting the aeration discs on the aeration pipelines. The point-by-point aeration mode not only meets the requirement of water purification of a black and odorous river channel for dissolved oxygen, but also reduces the waste of resources; low energy consumption and high efficiency are realized; the aeration device is arranged according to the Fibonacci sequence, so that organic matters and pollutants such as nitrogen and phosphorus can be effectively and efficiently removed; and the pollutant removal rate is improved, and the aeration cost is reduced.

The invention discloses a method for realizing short-range nitrification and denitrification by using high light intensity. In the method, the activated sludge is irradiated under high light intensity, so that the nitrite oxidizing bacteria in the nitrifying bacteria of the sludge are inhibited, and then the conventional nitrification reaction is carried out, so that the initial ammonia nitrogen is oxidized to nitrite nitrogen and stops at Therefore, the generated nitrite nitrogen is reduced to nitrogen gas by denitrifying bacteria and discharged into the atmosphere, thereby removing the nitrogen in the wastewater. The method of the invention can save 25% of the aeration cost and 40% of the carbon source cost, and provide a stable electron acceptor for the subsequent anaerobic ammonium oxidation process, which can be used for rapid denitrification of sewage with high efficiency and low energy consumption.

The invention relates to the technical field of sewage treatment, in particular to a phototrophic enhanced biological system and a biological nitrogen and phosphorus removal method, the phototrophic enhanced biological system comprises an adjusting tank, a reactor, a sludge tank and a clean water tank which are connected through pipelines, and wastewater in the reactor is discharged after passing through an EBPR stage, an expiration stage from EBPR to phototrophic EBPR, a phototrophic EBPR stage, a transition stage from phototrophic EBPR to phototrophic BNR and a phototrophic BNR stage. According to the phototrophic enhanced biological system and the biological nitrogen and phosphorus removal method provided by the invention, illumination conditions, aeration conditions and stirring conditions are set and alternately carried out, after passing through an EBPR stage, an expiration stage from EBPR to phototrophic EBPR, a phototrophic EBPR stage, a transition stage from phototrophic EBPR to phototrophic BNR and a phototrophic BNR stage, and multiple internal circulation is carried out in each stage, proper aerobic, anoxic and anaerobic environments are created, the synergistic effect of microalgae-bacterial consortia is enhanced, the aeration requirement of biological nutrient substance removal can be eliminated, external COD dosing is not needed, the operation cost is low, and the method is environment-friendly.

An aeration amount control system includes a control device for determining a first target aeration amount as the target aeration amount, and after having determined the first target aeration amount, determining a second target aeration amount as the target aeration amount, wherein, if a first change amount of the transmembrane pressure difference of the separation membrane calculated by the measurement device for the aeration performed on the basis of the first target aeration amount by the aeration device is greater than a second change amount of the transmembrane pressure difference of the separation membrane calculated by the measurement device for the aeration performed on the basis of the second target aeration amount by the aeration device, the control device determines a value, smaller than the second target aeration amount, as a third target aeration amount.