7results about How to "Avoid Pollution Hazards" patented technology

The invention discloses a pickled pepper preparation method, and belongs to the technical field of food processing.The method comprises the steps that fresh peppers are prepared; saline water recovery and classification: the recovered saline water is divided into strain source saline water and to-be-regenerated saline water according to flavor evaluation; solid microbial inoculum preparation: freeze drying and encapsulation embedding are performed on the strain source saline water, and a solid encapsulated microbial inoculum is prepared; regenerating the saline water, namely carrying out rough filtration and fine filtration on the saline water to be regenerated so as to remove substances of which the molecular weight is greater than 80 and less than 2000 Daltons; and preparing a fermentation starting liquid and fermenting. Through fine grading of saline water and functional preparation of the microbial inoculum, standardization and flavor stability of pickled pepper production are realized, and the problems of flavor degradation and batch instability caused by saline water circulation in a traditional process are fundamentally solved.

The utility model relates to the technical field of packaging boxes, in particular to a packaging box light-transmitting piece fixing device which comprises a light-transmitting piece, the light-transmitting piece is located in a containing cavity and arranged at a light-transmitting opening, a fixing rod is fixedly arranged on an outer frame, an end cover is fixedly arranged at the end, away from the outer frame, of the fixing rod, the diameter of the fixing rod is smaller than that of the end cover, and the outer end of the end cover is in a cone frustum shape. The diameter of one end, away from the fixing rod, of the end cover is smaller than that of one end, close to the fixing rod, of the end cover, a clamping groove extending to the fixing rod is formed in the end cover, a first through hole matched with the end cover is formed in the position, on the side of the light-transmitting opening, of the box body, a second through hole matched with the end cover is formed in the light-transmitting piece, and the inner frame is located in the containing cavity and provided with a third through hole matched with the fixing rod. The light-transmitting piece and the box body are combined and fixed through the outer frame and the inner frame, operation is convenient and fast, sealing performance is good, the hidden danger that glued food is polluted is avoided, and safety is improved.

The utility model belongs to the technical field of water pressure control for water treatment, and particularly relates to a constant-pressure water replenishing device for water treatment, which comprises a water tank, a water inlet, a water outlet and a drain outlet are arranged on the side wall of the water tank, an ultrasonic cleaner and a controller are connected to the middle of the outer side wall of the water tank, and a water replenishing and descaling component is arranged at the top end inside the water tank. The water supplementing and descaling assembly comprises an air cylinder on the top, a connecting rod connected with a telescopic rod of the air cylinder and a buoyancy detection device at the lower end of the connecting rod, the side wall of the connecting rod is connected with a brush, the buoyancy detection device is provided with a floating block, a sliding groove is formed in the inner bottom of the buoyancy detection device, and a second pressure sensor is arranged at the upper end of the sliding groove. And a first pressure sensor is arranged at the lower end. Through signal conduction of the pressure sensor, linkage of all parts by the controller and mechanical-electrical integration design, cooperative operation of constant-pressure water replenishing and efficient descaling is achieved.

This invention proposes a fully biodegradable mulch film suitable for extreme high-altitude environments and its preparation method, comprising at least one three-layer composite film consisting of an outer layer, a middle layer, and an inner layer; the outer layer is an ultraviolet protective layer, the middle layer is a water vapor barrier layer, and the inner layer is a heat-insulating and protective layer. The mulch film of this invention is a fully biodegradable multilayer co-extruded agricultural mulch film integrating "super weather resistance, high barrier moisture retention, intelligent thermal management, and prevention of additive migration," thereby overcoming the shortcomings of existing mulch films in applications in extreme high-altitude environments.

The rapid cleaning device comprises a sliding rod, a frame plate, a lifting traction rope, a cleaning assembly and a cleaning traction assembly, the sliding rod and the water gauge are arranged in parallel at intervals, the frame plate is movably arranged on the sliding rod, the lifting traction rope is arranged at one end of the frame plate, and the cleaning assembly is located at the other end of the frame plate; the cleaning assembly is provided with an attaching position and a separating position, the cleaning assembly is attached to the water gauge at the attaching position, the cleaning assembly is separated from the water gauge at the separating position, and the cleaning traction assembly is connected with the cleaning assembly to drive the cleaning assembly to move between the attaching position and the separating position. The rapid cleaning device is simple in structure, convenient to operate, capable of cleaning the water gauge in a reciprocating friction mode and good in reliability, the cleaning efficiency and safety of the water gauge are improved, the cleaning and maintenance cost of the water gauge is reduced, and potential safety and environmental pollution hazards are avoided; the requirements of a hydropower station on quick cleaning of the water gauge and long-period cleanness and tidiness of the gauge surface are met.

The invention discloses a MnO2 / rGO flexible transparent composite electrode film prepared through one-step electrodeposition and a method, and belongs to the field of energy storage materials, the MnO2 / rGO flexible transparent composite electrode film is prepared through the steps of firstly preparing a gold grid electrode, then preparing a graphene oxide / manganese acetate mixed solution, and finally preparing the MnO2 / rGO flexible transparent composite electrode film by taking the gold grid electrode as a working electrode, a platinum sheet electrode as a counter electrode and a saturated calomel electrode as a reference electrode. The prepared graphene oxide / manganese acetate mixed solution serves as electrolyte, and a MnO2 / rGO composite material is electrically deposited on the surface of the gold grid in one step through a cyclic voltammetry method; and then cleaning to remove the electrolyte adsorbed on the surface, and drying to prepare the MnO2 / rGO flexible transparent composite electrode material. The MnO2 / rGO flexible transparent composite electrode material has the process characteristics of simple preparation process, high deposition efficiency and strong repeatability, and the prepared MnO2 / rGO flexible transparent composite electrode material has high flexibility, high light transmission, high capacity and cycling stability, and has great application potential in the field of flexible transparent energy storage.

The present application relates to waste circuit board resource utilization and flue gas treatment technical field, disclose a kind of method and system for recovering bromine from bromine flame retardant waste circuit board smelting flue gas, the method includes oxygen-rich molten pool smelting, flue gas cooling, bag dust collection and bromine ion leaching, double-stage gradient absorption, bromine salt solution pretreatment, preheating oxidation, distillation condensation separation, finished product separation and reflux eight steps;System includes molten pool smelting unit, flue gas cooling unit, bag dust collection and leaching unit, double-stage gradient absorption unit, pretreatment unit, preheating oxidation unit, distillation condensation unit, separation reflux unit;The present application realizes the efficient release of bromine element by oxygen-rich smelting, combined with gradient cooling, double-stage absorption, molecular distillation and other processes, high-purity recovery of bromine is realized, and the purity of finished product bromine is ≥99.5%;While using waste heat boiler to recover flue gas heat, provide heat source for distillation process, reduce energy consumption.