7results about How to "Reduce discharge pressure" patented technology

This utility model discloses a system for the treatment and recycling of domestic sewage in courtyards, relating to the field of environmental protection technology. It includes a three-compartment septic tank, a leachate tank, a multi-stage composite packing infiltration system, a water storage tank, a water distribution tank, and a rhizosphere water distribution system, connected in sequence. The multi-stage composite packing infiltration system comprises multiple layers of composite packing material and a surface planting layer. Each composite packing layer is composed of multiple modular structures. Each modular structure includes a box, with handle holes on its side walls. The distance between the handle hole and the top of the box is less than the thickness of the boss. Adjacent boxes on the same layer are fixedly connected by plugs. The thickness of the plugs is greater than the thickness of one handle hole but less than the thickness of two handle holes. The leachate tank is located on the ground. The modular structure of this utility model, through the handle hole and plug design, ensures horizontal connection stability. By adding a leachate tank, the discharge pressure of the sewage pump is reduced, ensuring the normal operation of the sewage pump.

The invention discloses high-specific-surface-area porous carbon based on coal gasification carbon residues and a preparation method and application thereof.The method comprises the steps that coal gasification residues serve as raw materials and are treated to obtain a carbon-rich precursor, and the carbon-rich precursor is carbonized to obtain a coal gasification residue-based hard carbon matrix; then, the hard carbon matrix is in contact with a modified solution containing hydrogen peroxide, synergistic pore-forming agents such as an inorganic gas generating type pore-forming agent, an organic small molecule pore-forming agent and a soft and hard template pore-forming agent can be further added into the modified solution, and selective oxidation etching and gas-phase pore-forming are carried out under the conditions of controlled temperature, time and pH; a multi-scale micropore and mesopore structure is formed; and washing, drying and re-carbonizing or thermally annealing to obtain the coal gasification slag-based hard carbon material with high specific surface area. Compared with unmodified hard carbon, the method has the advantages that the specific surface area can be obviously increased, micropores and mesopores are synergistically developed, electrolyte infiltration and an ion transmission channel are obviously improved, and controllable construction of a multistage pore channel can be realized on the premise of ensuring relatively high yield and structural stability.

The invention discloses a modularized dynamic water quality regulation and control and algae prevention and control device for aquaculture, and relates to the technical field of aquaculture equipment.The modularized dynamic water quality regulation and algae prevention and control device is characterized in that a modularized main body supporting structure serves as a carrier, buoyancy supporting and spatial positioning are provided, and a charcoal-bacteria targeted synergistic pollution reduction system is arranged on the modularized main body supporting structure for pollution reduction; a full-period dynamic regulation and control module is mounted at the top to realize signal transmission and linkage control; a functional floating bed planting unit covers the upper part; an accurate algae prevention and control assembly is further arranged and is matched and linked with other parts through the layout of a supporting structure, and an all-dimensional prevention and control system is formed; according to the invention, multi-modal fusion and self-adaptive acquisition are adopted, and strict quality control is combined to guarantee data reliability; efficiency and safety are both considered through dynamic bandwidth transmission and encryption processing; parameter changes are accurately captured through edge end AI analysis, and misjudgment is avoided; meanwhile, a time sequence coupling algorithm and a multi-dimensional early warning mechanism improve the risk identification timeliness, realize resource optimization configuration, construct a personalized risk prevention and control system and strengthen the health monitoring accuracy.

The present invention measures pressure responses for respective flow rates of a plurality of terminals, constructs a device learning model for predicting variations in terminal pressure, and performs optimal control of an air compressor. In a compressor control method facing a pneumatic system having a plurality of ends consuming compressed air, a control unit of the system 400: (a) a supply-side pressure is measured with pressure gauges 305-307 on a discharge side from which the compressed air is supplied; (b) pressure values and flow values at the time of opening or closing of valves are acquired using pressure gauges 113, 123,..., 243 and flow meters 112, 122,..., 242 provided at a portion of the ends of piping 11, 12,..., and valves 111, 121,..., 241, and (c) an end pressure prediction model for obtaining the pressure at each end 11, 12,..., 24 is learned using supply pressure values from air compressors 2-4 and pressure values and flow values at the demand side. During actual operation of the pneumatic system, the control unit calculates the optimal discharge pressure of the air compressor by inputting the supply pressure value and the air flow rate value of the end to the end pressure prediction model.

This application discloses a textile wastewater recycling and treatment device, belonging to the field of wastewater treatment technology. It includes a pretreatment unit, an anaerobic treatment unit, a biological treatment unit, a deep treatment unit, and a sludge treatment unit connected sequentially along the wastewater flow direction. The pretreatment unit uses a screen, a collection tank, a cooling tower, and an equalization tank to achieve impurity interception, wastewater temporary storage, high-temperature cooling, and pH adjustment for water quality and quantity homogenization. The anaerobic treatment unit removes sulfides from the wastewater using an anaerobic tower. The biological treatment unit degrades organic pollutants through primary sedimentation pretreatment, anoxic-aerobic coupled biochemical reactions, and sludge recirculation. The deep treatment unit ensures effluent quality meets standards through an air flotation tank. The sludge treatment unit achieves sludge concentration, dewatering, incineration, and filtrate recirculation. This invention solves the problems of poor stability, incomplete pollutant removal, and low reuse rate in traditional textile wastewater treatment processes. The treated effluent can be directly reused in textile production workshops, resulting in high water resource utilization.

The application provides a spraying device and a spraying system for cleaning strip material. The spraying device comprises: a first spraying device arranged above the strip material along the direction of gravity; and a second spraying device arranged below the strip material along the direction of gravity. The first spraying device and the second spraying device each comprise: a barrel portion having a liquid inlet and a liquid outlet, wherein the liquid inlet is used for entering cleaning liquid; a spraying head rotatably connected to the barrel portion, wherein the inlet of the spraying head is in communication with the liquid outlet, and the spraying head has a plurality of spraying ports; and a rotating assembly rotatably connected to the inner wall of the barrel portion at one end and facing the liquid inlet, and fixedly connected to the spraying head at the other end, wherein the rotating assembly is configured to rotate under the action of the cleaning liquid and drive the spraying head to rotate. The first design pressure of the cleaning liquid entering the first spraying device is less than the second design pressure of the cleaning liquid entering the second spraying device. The application can improve the consistency of the spraying range of the upper and lower sides of the strip material.

This invention provides an aluminum-based nickel-free medium-temperature sealing agent for anodizing, its preparation method, and an aluminum-based anodizing sealing method, belonging to the technical field of sealing agents. By weight, the aluminum-based nickel-free medium-temperature sealing agent provided by this invention comprises the following components: 60-120 parts of lithium salt sealing agent, 2-10 parts of zirconium salt film-forming accelerator, 3-20 parts of titanium salt film-forming accelerator, 10-40 parts of small molecule organic carboxylate, 0.5-5 parts of nonionic surfactant, and 800-1200 parts of water. Using the aluminum-based nickel-free medium-temperature sealing agent provided by this invention, the appearance retention effect of the workpiece can be improved while meeting the nickel-free environmental protection requirements.