12 results about "Anaerobic decomposition" patented technology

The invention discloses a machining wastewater treatment method, and relates to a wastewater treatment technology, and the method comprises the following steps: carrying out air flotation coagulation treatment on machining wastewater, and carrying out solid-liquid separation on the machining wastewater to obtain pretreated wastewater; treating the pretreated wastewater by adopting a circulating anaerobic decomposition method and a circulating facultative anaerobic decomposition method in sequence to purify organic matters in the pretreated wastewater, so as to obtain a pre-purified water body. The invention further discloses a machining wastewater treatment system. The anaerobic process and the oxidation process are both carried out in a water circulation mode, the treatment speed of organic matter decomposition can be greatly increased, and then the wastewater treatment capacity of the treatment system can be increased.

The present disclosure relates to a pectin-containing wastewater treatment method and a treatment device, the method comprising: inputting first pectin wastewater into a biological conversion tank, and performing biological conversion treatment on pectin in the first pectin wastewater based on a pectin-cellulose degradation mixed bacteria to obtain second pectin wastewater containing small molecular structure pectin; wherein the pectin-cellulose degradation mixed bacteria is a mixed bacterial population capable of simultaneously degrading pectin and cellulose, and the biological conversion treatment process is used to change the pectin structure without affecting the chemical oxygen demand corresponding to the first pectin wastewater; inputting the second pectin wastewater into a primary or multi-stage anaerobic reactor for anaerobic decomposition treatment to obtain wastewater with reduced organic matter concentration after pectin decomposition and biogas; and the biogas is used for input into a power supply end or an energy storage end for recycling. In the wastewater treatment process, in-situ treatment and relatively sufficient degradation of pectin are achieved, and the treatment load and treatment efficiency are improved.

The present invention provides a decomposition acceleration composition designed to enhance the aerobic decomposition of waste in household trash. The product contains a blend of enzymes, microbial inoculants, nutrients, and other agents that, upon activation by moisture, accelerate the breakdown of waste. This reduces the volume of waste entering anaerobic decomposition phases in landfills, thereby lowering methane emissions. The product is available in tablet, spray, and embedded trash bag forms, making it easy to use, cost-effective, and environmentally friendly.

The present application relates to the field of ecological planting and breeding technology in rice field, in particular to a method for reducing soil planting obstacles and methane (CH4) emission in rice-shrimp field. The method provided by the present application separates and reduces the winter ponding area and time through the breeding of crayfish, increases the ventilation and oxygen content of the rice field, prolongs the decomposition time of the good nutrients of straw, and reduces the degree of gleying and improves the soil quality of the rice field; the next year, the rice is directly sowed to delay the rice flooding time, reduce the total ponding time during the rice growth period, increase the decomposition of the organic materials such as straw feed which is not used by crayfish, reduce the anaerobic decomposition of methanogens, effectively reduce the CH4 emission while ensuring the income of farmers.

The invention discloses a sewage purification device for environmental protection and belongs to the technical field of sewage treatment. The problems in the prior art are solved. Comprising a treatment pond, a mounting mechanism is arranged on the inner wall of the treatment pond, a shell is fixedly connected to the tail end of the mounting mechanism, a liquid storage box is fixedly mounted on the inner wall of the shell, an injection hole is formed in the top of the liquid storage box, and a monitoring mechanism is fixedly connected to the bottom of the liquid storage box; the side, away from the liquid storage box, of the inner wall of the shell is fixedly connected with a reset mechanism. Through the arrangement of the mounting mechanism, the monitoring mechanism, the sealing mechanism and the culture assembly, acidic sewage discharged into the tank is monitored and managed regularly, so that the pH value of acid and alkali in the tank does not need to be detected in advance when anaerobic decomposition treatment is performed on the sewage in a winery, and the sewage can be directly introduced; meanwhile, anaerobic bacteria are prevented from being in contact with highly acidic sewage and fed strong alkali, so that the activity of the anaerobic bacteria is reduced or the anaerobic bacteria die, the acidity of the sewage is continuously improved, and emission or subsequent treatment is influenced.

The invention discloses a modular septic tank and a treatment process, and relates to the field of rural toilet renovation engineering.The modular septic tank is configured to be a treatment manure pit which is fast to disassemble and assemble and flexible in combining.The treatment manure pit comprises a septic tank body, a bearing bottom frame, end connectors and a structure reinforcing frame; wherein the septic tank body comprises a standard unit A, a standard unit B and a standard unit C which are sequentially connected in series, the standard unit A, the standard unit B and the standard unit C are consistent in structure and are respectively used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, and each of the standard unit A, the standard unit B and the standard unit C comprises a barrel body, a rib plate and a cover plate; the barrel body is a cylinder with a large middle part and two small ends; according to the septic tank, split modular design is adopted, intelligent monitoring and multiple reinforcement functions are integrated, rapid deployment of the septic tank can be achieved, and the requirements for convenient transportation and low maintenance cost in a rural distributed toilet changing scene are met.

This invention discloses a rice cultivation method for preventing malformed and unclosed glume, including rational straw return to the field, timely transplanting, optimized water management, and integrated pest management. Based on the inventors' research conclusion that "malformed and unclosed glume" is caused by allelopathic substances produced by the anaerobic decomposition of soil organic carbon before and after rice floret differentiation, this invention controls and reduces the accumulation of allelopathic substances produced by the anaerobic decomposition of soil organic carbon and the amount absorbed by the rice plant, and enhances the rice plant's ability to harmlessly utilize allelopathic substances. This reduces the numerous negative impacts of allelopathic substances on rice growth, development, and high yield, including preventing malformed and unclosed glume, thereby further increasing rice yield. This has significant practical implications for promoting rational straw return to the field and promoting the sustained growth of rice yield per unit area in my country.

Disclosed herein are systems and methods of wastewater digestion to produce a fertilizer. Some systems may include an anaerobic decomposition vessel configured to produce an anaerobic effluent. Systems may transfer the anaerobic effluent from the anaerobic decomposition vessel to a first aerobic decomposition vessel, preferably by a conduit, which connects the anaerobic decomposition vessel to the first aerobic decomposition vessel. Systems may transfer the first aerobic effluent from the first aerobic decomposition vessel to a second aerobic decomposition vessel, preferably by a conduit, which connects the first aerobic decomposition vessel to the second aerobic decomposition vessel. Systems may digest the first aerobic effluent in the second aerobic decomposition vessel in the presence of oxygen or an oxidizer, such as hydrogen peroxide, or ozone, to produce a second aerobic effluent while maintaining a pH from 5.5 to 6.2 or 7.1 to 7.8. Systems may filter at least the first or second aerobic effluent or both, where the second aerobic effluent comprises inorganic nitrogen in oxyanion form and has a carbon to nitrogen ratio greater than or equal to 3:1.

The application relates to the sewage treatment technical field and discloses a circulating treatment and utilization device for rural domestic sewage, which comprises multiple purification units and a treatment center. Each purification unit is connected with a sewage discharge end of each household, multiple adjacent purification units share one treatment center, the purification unit comprises a pretreatment bin and a purification bin, the bin bodies of the two are provided with circulating heating cavities, sewage first enters the pretreatment bin, is subjected to preliminary anaerobic decomposition and homogenization, then enters the purification bin for further degradation and purification, each purification unit is provided with a heating assembly, heat is generated by burning marsh gas to keep the environmental temperature in the purification unit within a temperature range suitable for the survival of bacteria. The treatment center centrally collects the marsh gas generated by each household purification unit, and distributes the use of the marsh gas according to actual conditions, which not only avoids the problem that the purification unit is damaged by low temperature, but also guarantees the activity of the bacteria in the purification unit, and further improves the treatment efficiency of the sewage.

The invention relates to a system and method for reducing greenhouse gas emissions from wastewater reservoirs using a vermifiltration system. The method comprises introducing organic wastewater into a vermifiltration unit, distributing the wastewater over a biological filter bed containing earthworms, collecting the treated effluent, and channeling it into a wastewater reservoir. The system reduces methane, carbon dioxide, and ammonia emissions by minimizing anaerobic decomposition at the reservoir surface. The vermifiltration unit can be connected upstream or downstream of the reservoir. Optional features include real-time monitoring, emission factor calibration, odor control, and vermicompost recovery. The invention also includes a method for generating carbon credits based on verified emission reductions, which can be tokenized and traded. Field studies demonstrate significant reductions in greenhouse gas emissions and nutrient loads, including total nitrogen, ammoniacal nitrogen, nitrate, and phosphorus. The invention offers a low-energy, scalable solution combining waste treatment, climate mitigation, and circular resource recovery.

This invention discloses an automated control method and operation and maintenance system for the coordinated remediation of purification and replenishment in small water bodies, relating to the field of water environment governance and automated control technology. The method includes: acquiring data on escaping gas concentration, ambient temperature and humidity, and conventional vital signs through an environmental sensing array; compensating and correcting the escaping gas concentration data based on ambient temperature and humidity; performing trend analysis on the corrected escaping gas concentration data, generating an early sign signal of anaerobic decomposition in sediment when the concentration continues to rise and exceeds a low concentration threshold; retrieving historical trend data for correlation judgment, generating a sediment nutrient release status signal when it conforms to preset anaerobic decomposition evolution characteristics; executing coordinated intervention in response to this signal; continuously acquiring updated data and evaluating the effect after intervention, and dynamically adjusting execution parameters. This invention achieves early warning and multi-strategy coordinated remediation of anaerobic decomposition in sediment of small water bodies.

The invention discloses a solid waste landfill leachate treatment system and process, and relates to the technical field of solid waste leachate treatment.The treatment process comprises the following steps that solid waste landfill leachate is pretreated through a filter, large-particle matter is removed, then the solid waste landfill leachate is fed into a raw water collecting tank, standing and sedimentation are conducted, and a solid waste leachate stock solution is obtained; introducing the sludge into a digestion tank, performing intermittent aeration, performing wood particle and microbiological treatment, introducing the treated sludge into a precipitation tank, separating the sludge, wood particles and water, introducing supernate into a reaction tank, performing wood particle and microbiological treatment, and discharging the supernate; the process provided by the invention solves the problems that microorganisms in a treatment system are easy to inhibit, the treatment effect is poor, the treated liquid is difficult to reach the standard and the like when the high-concentration leachate is treated by an existing biological method, the high-concentration leachate can still keep good microbial activity, organic matters in the sewage are repeatedly subjected to aerobic and anaerobic decomposition in the digestion tank, and the treatment effect is good. And high-efficiency removal can be realized.