11results about How to "Carbon saving" patented technology

The invention relates to the technical field of sewage treatment, in particular to a low-carbon nitrogen and phosphorus removal sewage treatment system, a sewage treatment method and application thereof. The sewage treatment system comprises a pretreatment unit, an adsorption tank, a mid-sedimentation tank, a biochemical tank, a secondary sedimentation tank and an anaerobic hydrolysis acidification tank; the biochemical tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; the anaerobic hydrolysis acidification tank is provided with a VFAs-containing supernate outlet communicated with the anaerobic tank; the mid-sedimentation tank is provided with an adsorbed sludge outlet and a sewage outlet, the adsorbed sludge outlet is communicated with the adsorption tank and the anaerobic hydrolysis acidification tank, and the sewage outlet is communicated with the anaerobic tank; the secondary sedimentation tank is provided with a biological sludge outlet and a water outlet, and the biological sludge outlet is communicated with the anaerobic tank and the anaerobic hydrolysis acidification tank. According to the sewage treatment system, denitrifying phosphorus-accumulating bacteria, nitrifying bacteria and hydrolytic acidification bacteria can be cultured in different sludge systems, and the contradiction between the denitrifying phosphorus-accumulating bacteria, the nitrifying bacteria and the hydrolytic acidification bacteria on substrate competition and sludge age is solved; and the anaerobic hydrolysis acidification tank is arranged to recycle a carbon source in the sewage, so that the advantage of low carbon is achieved.

The invention discloses a two-stage short-cut denitrification-anaerobic ammonia oxidation double-granule sludge device for sewage treatment. Comprising a nitrate nitrogen wastewater tank and a carbon source water tank which are arranged in parallel, a short-cut denitrification granular sludge reactor which is jointly connected with the nitrate nitrogen wastewater tank and the carbon source water tank, and an anaerobic ammonia oxidation granular sludge reactor which is connected with the short-cut denitrification granular sludge reactor in series, the short-cut denitrification granular sludge reactor comprises a short-cut denitrification tank body, a first water inlet is formed in the lower end of the short-cut denitrification tank body, the nitrate nitrogen wastewater tank is communicated with the first water inlet through a first water inlet pump, and the carbon source water tank is communicated with the first water inlet through a second water inlet pump; according to the invention, short-cut denitrification and anaerobic ammonia oxidation decoupling are realized, and adverse effects of organic matters on anaerobic ammonia oxidation are avoided; the whole set of device is a complete continuous flow process, and compared with the process in the prior art, the production rate of nitrite nitrogen is effectively improved, and a reaction substrate can be continuously and stably provided for anaerobic ammonia oxidation.

The invention relates to the technical field of sewage treatment, in particular to a system for efficiently treating livestock and poultry breeding sewage by utilizing algal-bacterial symbiosis, which comprises a solid-liquid separation module arranged on the ground, the solid-liquid separation module comprises a water inlet pipe, a separation box and a filter basket, a nitrification and denitrification tank is arranged on the top of the ground, and a stirring assembly is arranged in the nitrification and denitrification tank; the chemical phosphorus removal module comprises a coagulation, flocculation and sedimentation tank and a stirring assembly, the coagulation, flocculation and sedimentation tank is arranged on the ground, and the stirring assembly is arranged in a coagulation and flocculation area in the coagulation, flocculation and sedimentation tank; according to the system for efficiently treating the livestock and poultry breeding sewage by utilizing the bacterial-algae symbiosis, compared with an existing method for removing the total nitrogen content in the sewage by independently utilizing microorganisms, pollutants in the sewage are synergistically removed in the oxidation pond by utilizing a bacterial-algae symbiosis structure, microalgae and bacteria, so that the energy consumption and the carbon source are saved, and the environmental pollution is reduced. Meanwhile, the sewage treatment effect is improved.

The invention discloses an aquaculture integrated anaerobic ammonia oxidation denitrification device and a process thereof, and relates to the technical field of sewage treatment.The aquaculture integrated anaerobic ammonia oxidation denitrification device comprises a tank body, an exhaust port is formed in the top of the tank body, a drain outlet is formed in the bottom of the tank body, and a water outlet and a water inlet are formed in the side wall of the tank body; the interior of the tank body is divided into a clear water area, a PD / A reaction area, an anaerobic reaction area, a vertical flow precipitation area and a sewage collection area from top to bottom, and water quality detection ports are formed in the side walls, located in the anaerobic reaction area and the PD / A reaction area, of the tank body. Breeding tail water enters the tank body from the vertical flow sedimentation area and passes through the anaerobic reaction area and the PD / A reaction area, clear water enters the clear water area to be discharged, and sludge enters the sewage collection area to be discharged. And the defect that the traditional nitrification and denitrification nitrogen removal reaction process is not suitable for large-flow and low-nitrogen pollution load aquaculture water treatment is overcome.

The invention discloses a lactobacillus plantarum mutant strain capable of tolerating and efficiently metabolizing azo pigment, the strain is named as lactobacillus plantarum E4103 in taxonomy, and is preserved in the China General Microbiological Culture Collection Center (CGMCC) with the preservation number of CGMCC No.31189. The strain is subjected to adaptive domestication in a continuous culture mode of continuously increasing the concentration of azopigment allura red, and is obtained through natural selection. The obtained strain can normally grow under the condition of the allura red with the concentration of 0.52 g / L, compared with an original strain, the decolorization rate of the allura red is increased by 10.66%, theoretical basis and guidance can be provided for follow-up development of azo dye decolorization strains, and application and popularization of the strain in the industrial field are promoted.

The invention provides a highly efficient nitrification and denitrification sewage treatment method based on the separation of carbon and nitrogen elements in the influent, comprising the following steps: S1: the raw sewage enters the carbon-nitrogen separator, and a high carbon adsorption mixed liquid is obtained at the bottom of the carbon-nitrogen separator; a high nitrogen separation clear liquid is obtained at the top of the carbon-nitrogen separator; S2: the high nitrogen separation clear liquid obtained in step S1 is subjected to denitrification reaction, nitrite / nitrification reaction in turn to obtain a nitrified liquid; S3: the high carbon adsorption mixed liquid and the nitrified liquid are subjected to denitrification reaction, anaerobic phosphorus release reaction, nitrification aerobic phosphorus absorption reaction in turn to obtain a solution to be precipitated; S4: the solution to be precipitated enters the sedimentation tank, and a part of the activated sludge obtained at the bottom of the sedimentation tank is directly discharged, and the other part enters the carbon-nitrogen separator in step S1, and the denitrification reaction in step S2 and step S3. The theoretical value of the denitrification rate of the present application is increased from 80% to more than 90%, and the TN of the effluent of the biochemical system can reach 5mg / L.

The application provides a method and system for removing high-concentration complex cyanide in gold extraction wastewater, and relates to the technical field of sewage treatment. The method comprises the following steps: adjusting the pH of the gold extraction wastewater to 8-10 to obtain pretreated wastewater; adding a cobalt ferrite particle catalyst to the pretreated wastewater and introducing ozone to obtain oxidized effluent; dividing the oxidized effluent into solution A and solution B according to the volume ratio, oxidizing solution A under the condition of low dissolved oxygen by using anaerobic ammonia oxidation bacteria, mixing the oxidized solution A with untreated solution B to obtain a mixed solution; and reacting the mixed solution with porous adsorption material and anaerobic ammonia oxidation bacteria, and recycling the cobalt ferrite particle catalyst for circulation. The method used by the application can effectively improve the removal rate of high-concentration complex cyanide, realizes complete mineralization of the complex cyanide, solves the core problem of difficult degradation of the complex cyanide, has strong load resistance, is simple to operate, and has good adaptability.

The present invention belongs to the technical field of environmentally friendly sewage and waste gas treatment equipment, specifically a high-efficiency full-process denitrification reactor. A separate reaction room can most stably maintain and enhance the short-range denitrification reaction process, a recovery mechanism can recover dissolved oxygen, and a control and sensing mechanism can enhance precise control. It includes a full-type biological reaction tower and a strong reaction type reactor, and the strong reaction type reactor includes a main reaction tank, a bell-type mixing chamber, an oil filter absorber, and a reaction oxygen supplier; a reaction filter frame surrounded by a biological reaction microfiltration membrane is arranged in the center of the main reaction tank, and the reaction filter frame divides the entire main reaction tube into an inner high-oxygen reaction chamber inside the reaction filter frame and an equivalent reaction chamber outside the reaction filter frame. An oil filter absorber is arranged at the bottom of the main reaction tank, and a repeated jet suction filter head of the oil filter absorber is inserted at the bottom of the main reaction tank; the bell-type mixing chamber is arranged in the inner high-oxygen reaction chamber.

This invention relates to a high NH4 content + ‑N, high NO3 — -N and high F — The high-efficiency, low-consumption treatment process for photovoltaic wastewater involves initially removing fluoride from the wastewater, which then enters a synergistic short-cut denitrification tank. Through the synergistic effect of heterotrophic short-cut denitrification and sulfur autotrophic short-cut denitrification in the tank, NO3... — -N denitrification reaction controlled at NO2 — This step, involving the addition of nitrogen (N), avoids full-scale denitrification by combining the effluent from short-cut denitrification with high NH4 levels. + -N silane wastewater is mixed in an intermediate tank and then undergoes efficient denitrification via an anaerobic ammonia oxidation (AAO) reactor. The effluent from the AAO reactor enters the MABR (Maintenance-Based Bioreactor) tank. The unique layered structure of the MABR biofilm ensures that nitrification / short-cut nitrification, AAO, and denitrification / short-cut denitrification reactions occur in the same reactor, achieving deep denitrification and removal of residual COD. This process achieves acid-base balance during the biochemical reactions, saving 100% of the acid and alkali dosage. Sludge production is only 10% of that of traditional denitrification processes under the same load, significantly reducing operating costs.

The fluidized bed system and method for jointly preparing porous carbon and silicon-carbon negative electrode materials provided by the present invention include a porous carbon preparation subsystem for converting a porous carbon precursor into porous carbon in a fluidized state; a functional group removal subsystem for converting oxygen-containing functional groups on the porous carbon into water for removal to obtain porous carbon after functional group removal; a silicon deposition subsystem for depositing silicon inside the porous carbon after functional group removal to obtain silicon-carbon negative electrode materials; and a carbon coating subsystem for carbon coating the surface of the silicon-carbon negative electrode materials. Among them, the porous carbon preparation subsystem is operated at high temperature, and the other subsystems are all operated at medium temperature. The porous carbon carries heat that can be used to remove functional groups and deposit silicon (endothermic reaction), and the gas heat energy is fully utilized, and natural cooling is achieved. Thus, energy saving and carbon emission goals are achieved. It has the characteristics of continuity, simple operation, large output, low cost, and significantly improved process safety.

The invention relates to an MCC multi-selection combined sewage treatment system and method. The MCC multi-selection combined sewage treatment system comprises a first selection area, a second selection area, a third selection area, a fourth selection area, a fifth selection area, a sixth selection area and a combination area, the first selection area is provided with a first water impeller, a second water impeller, a first gas stripping device, a second gas stripping device and an adjusting weir gate; the third selection area is provided with a third gas stripping device; the fourth selection area is provided with a fourth gas stripping device; a fifth gas stripping device is arranged in the fifth selection area; the fourth selection area is provided with a third water impeller; and perforated sludge discharge pipes are arranged at the bottoms of the second selection area and the third selection area. The invention also relates to a sewage treatment method using the MCC multi-selection combined sewage treatment system. The sewage treatment method comprises a general mode, an efficient mode and an enhancement mode. According to the invention, multiple selection modes are realized, and the treatment requirement of unstable water quality is met; different modes are selected according to different water quality and water quantity conditions, and the stable, economical and energy-saving operation effects of the system are achieved.