40results about How to "Easy operation, maintenance and management" patented technology

The invention discloses an ecological restoration method for a lakeside wetland. In the method, hygrophilous woody plants are planted in a lakeside zone to construct wetland plant communities. The hygrophilous woody plants comprise hygrophilous arbor and hygrophilous shrub, wherein the hygrophilous arbor comprises willows, metasequoia, ascendens mucronatum, taxodium ascendens brongn and bamboo; the hygrophilous shrub comprises iteaceae and S.integra thrnb; and the plants are planted in the way of shoot cottage or soil ball transplant. The hygrophilous woody plants are perennial plants, have a low growth rate, low biomass, low growth amount and low plant disposal pressure and do not need felling and refloating every year, so that the defects of frequently harvesting and refloating herbal emergent aquatic plant communities every year are overcome, the maintenance and management cost of lake wetland plant communities are reduced, the lakeside depositing rate is lowered, and the secondary pollution hidden danger to lake water bodies is relieved. Compared with the prior art, the method has the characteristics of convenient operation, maintenance and management, low maintenance cost, high ecological benefit, easy popularization and application and the like and can be used for ecological restoration engineering of lake and lakeside bottomlands, swamp marshes and shallow water zones.

The invention discloses a biological response system for multistage sewage treatment as well as a manufacturing method and a sewage treatment method. The biological response system is formed by connecting a multistage precipitation pretreatment unit, a multistage hydrolysis and acidizing treatment unit, an aeration oxygenation treatment unit and a multistage undercurrent wetland treatment unit through pipelines; the multistage undercurrent wetland treatment unit comprises a water inlet wetland pool, two groups of decomposition and percolation wetland pools and a water outlet wetland pool which are sequentially arrayed; and the multistage precipitation pretreatment unit, the multistage hydrolysis and acidizing treatment unit and the aeration oxygenation treatment unit are sequentially arranged on one side of the multistage undercurrent wetland treatment unit in parallel and are connected with one another through pipelines. The biological response system provided by the invention has the advantages of scientific design, reasonable structure, fewer electromechanical devices due to the adoption of an automatic flow mode, low operation cost, low sewage treatment expense, small floor area, obvious sewage treatment effect, convenience for operation and maintenance management, low cost on project capital construction and operation, and capability of carrying out purification treatment all the year round, ; the treated sewage can be directly discharged into reservoirs, rivers and lakes and is in accordance with discharge standards in China; and a bioecological technology has stronger self-regulation capability and repair capability.

The invention provides a subsurface flow and surface flow complex manmade wetland. The complex manmade wetland comprises a land, a subsurface reservoir and a surface reservoir, a surface collecting pool and a subsurface collecting pool. One side of the land is provided with the subsurface reservoir and the surface collecting pool, and the other side of the land is provided with the subsurface collecting pool and the surface collecting pool. The subsoil of the land is filled with a gravel layer, and the upper soil is covered with a pastoral earth; the filling depth ratio between the gravel layer and the pastoral earth is 3: 2. Emersed plant, floating plant and submerged plant are planted on the pastoral earth of the upper soil of the land; the subsurface collecting pool is communicated with the surface reservoir through a water pipe equipped with a valve. The invention combines the advantages of subsurface wetland and surface wetland such as high water purification efficiency, high water quality, high hydraulic load, low investment and operational charge, and good treatment effect; according to actual need, a plurality of measures can be used such as alternatively adopting subsurface flow and surface flow, subsurface flow and surface flow.

The invention relates to the field of sewage treatment, and discloses a sewage treatment integrated device enabling gravitational self-refluxing of activated sludge. The device comprises an integrated treatment tank which is internally provided with a circularly arranged partitioning guide plate and is divided into a biochemical region and a settling region; the biochemical region is positioned in a region surrounded by the partitioning guide plate, and the settling region is positioned in a region surrounded by the partitioning guide plate and the wall of the integrated treatment tank; the lower end of the partitioning guide plate inclines toward the wall of the integrated treatment tank and is connected with the wall; a plurality of sludge gravitational refluxing pipes communicating with the bottom of the settling region are arranged in the periphery of the partitioning guide plate; a water inlet chute which is peripherally arranged is formed in the upper part on the outside of the partitioning guide plate; an effluent weir slot which is lower than the opening of the water inlet chute is arranged at the periphery of the water inlet chute; a drain pump is arranged in the bottom of the biochemical region; the drain pump is connected to the water inlet chute through a pipeline. The device disclosed by the invention is convenient in structural configuration and operation management, so that the effluent effect is improved while the occupied area and the investment cost are reduced.

The invention relates to the technical field of treating sewage by utilizing a biological technology and discloses an energy-saving type treatment device for MBR (membrane biological reactor) oxidation ditch sewage. The energy-saving type treatment device comprises an oxidization ditch biochemical reaction region and a membrane region, wherein a straight gallery of the membrane region and an S-shaped gallery of the oxidization ditch biological reaction region are in butt joint from the beginning to the end to form a circulating gallery; a penetrating tracery wall flat plate is overhead arranged on the bottom of the membrane region and used for dividing the membrane region into a membrane tank and a water distribution region from top to bottom; water distribution holes are uniformly distributed in the penetrating tracery wall flat plate; a membrane region water inlet is formed in the front end of the water distribution region; a membrane assembly and a water outlet tube are arranged in the membrane tank; the oxidization ditch biological reaction region is equipped with a water inlet device, a residual sludge outlet, a pushing device and an aeration device. According to the energy-saving type treatment device disclosed by the invention, the oxidization ditch process is organically combined with the membrane biological reactor; by utilizing hydraulic operation characteristics of large-flow circulating plug-flow state of the oxidization ditch process, mixed liquor in a groove is circulated and quickly flows through an MBR membrane set to realize solid-liquid separation, and therefore, the energy-saving type treatment device has the advantages of simple and compact structure, low operation energy consumption, small floor area, less investment, high pollutant removing efficiency and the like.

The invention provides three-dike two-passage reinforced surface flow artificial wetland and an operation method of the three-dike two-passage reinforced surface flow artificial wetland. The artificial wetland comprises a bed body and a substrate, wherein the inside of the bed body is filled with the substrate; the cross section of the bed body is in a rectangular shape; the bed body is inclined from the water inlet end to the water outlet end in the length direction; two ditches are arranged in the substrate to form three dikes including a left side dike, a middle dike and a right side dike. According to the operation method, (1), when the height of the middle dike is lower than that of the left side dike and the right side dike, the submerging operation is adopted; (2) when the height of the middle dike is greater than the height of the left side and the height of the left side dike, the non-immersing operation is adopted; (3) when the height of the middle dike is identical to the height of the left side dike and the height of the right side dike, dry and wet alternate operation is adopted. The structure of the artificial wetland is changed; the sewage treatment area and the biodiversity are increased; the defects of great occupied area and low efficiency of the artificial wetland are overcome; meanwhile, after one passage is changed into two passages, the dry and wet alternate operation of the treatment process can be realized; the biodiversity is realized; the sewage processing efficiency is obviously improved.

The invention relates to the field of water pollution control, and particularly provides differential double-impeller underwater fine-bubble aeration device and method thereof. The device comprises amotor arranged on a platform and an underwater base, wherein a drive shaft is arranged between the motor and the bearing of the base to be taken as power source of an aeration impeller; a high speed impeller directly connected with the drive shaft and a low speed impeller connected with the drive shaft by a speed reducer are arranged at the bottom of the drive shaft; a spoiler is arranged at the lower part of each of the two impellers, a guide cylinder is arranged at the upper part of each impeller, the impellers rotate to sputter water and gas to the horizontal direction, to form a vacuum state, so that gas and water are sucked into the guide cylinder; and an annular buoy for regulating water-gas ratio is arranged above the guide cylinder. The invention also provides a method for debugging specific parameters of the device. Aiming at the technical problems of large bubbles, short gas-liquid contact time and poor oxygen dissolving efficiency of existing impeller aeration technology, the invention provides a simple and reliable solution.

The invention discloses a safety and stability control method and system for a power system based on strategy flexible configuration, and the method comprises the steps: carrying out the normalization processing of an existing safety control strategy and a system configuration scheme, obtaining different types of normalized fixed value tables, carrying out the logic configuration of the safety control strategy of each element based on the normalized fixed value tables, and carrying out the logic configuration of the safety control strategy of each element; generating a software program executable by the device; judging whether a target element is in an operation state or not based on an element operation criterion by utilizing the software program; when it is determined that the target element is in the operation state, judging whether the safety control device enters a starting state based on element protection starting criteria, and meanwhile judging whether the target source element is in an overload state or not based on element overload criteria; when it is determined that the safety control device corresponding to the target element enters the starting state, determining whether the target element is in a tripping state or not based on an element tripping criterion; and when it is determined that the target element is in the tripping state or the overload state, performing protection action.

The invention discloses a cooling tower used for the iron and steel industry. The cooling tower comprises an air guide cylinder, a tower body, a water collector, a planar screen, a water collecting disc, a spray pushing device and a water inlet pipe. The air guide cylinder is of an open structure and is arranged at the top end of the tower body. The water collector is arranged on the upper portion of the tower body transversely. The planar screen is arranged in the middle of the tower body. The water collecting disc is arranged on the lower portion of the tower body. The spray pushing device is arranged above the center of the planar screen. One end of the water inlet pipe is arranged below the spray pushing device, and the other end of the water inlet pipe is arranged at the bottom of the tower body. A water outlet pipe is further arranged below the water collecting disc. The cooling tower used for the iron and steel industry is simple in structure, no motor or speed reducer or electric-control equipment or filler is used, the cooling effect is stable, the operation weight is low, energy is saved, and operation and maintenance management is convenient.

The invention discloses a lateral water distribution MBR (Membrane Biological Reactor). The lateral water distribution MBR comprises a sewage treatment room and an equipment room which are adjacently arranged side by side, wherein the sewage treatment room comprises a first membrane tank section, a first feed water distribution channel, a middle internal reflux channel, a second membrane tank section and a second feed water distribution channel, the sewage treatment room is of a middle symmetrical structure and is divided into the two membrane tank sections by the middle internal reflux channel, the two outer sides of the two membrane tank sections are respectively provided with the feed water distribution channels, multiple groups of MBR membrane tanks are respectively arranged in the two membrane tank sections, and the feed water distribution channels can be used for simultaneously carrying out concentrated and uniform water distribution for each MBR membrane tank, so that the side channel water distribution is realized; the middle internal reflux channel can be used for simultaneously carrying out concentrated reflux and water yielding for the MBR membrane tanks. The lateral water distribution MBR is compact in structure, occupies a small area, can realize the concentrated water distribution, concentrated reflux and concentrated air purging for the MBR membrane tanks and has the advantages of small water head loss and low energy consumption.

The invention discloses oxidation ditch and MBBR(Moving Bed Biofilm Reactor)integrated sewage treatment equipment. The oxidation ditch and MBBR integrated sewage treatment equipment comprises a horizontal shell, a water inlet and a water outlet, the water inlet and the water outlet are formed in the horizontal shell respectively, the horizontal shell is provided with a main partition plate and divided into at least three cabins in the length direction, and an A/O area is communicated with a settling area through a pipeline; an overflow opening/water passing opening is arranged on the main partition plate between the settling area and a water outlet area. The oxidation ditch and MBBR integrated sewage treatment equipment is characterized in that the oxidation ditch and MBBR integrated sewage treatment equipment is from left to right sequentially provided with at least one cabin as the A/O area, at least one cabin as the settling area, and at least one cabin as the water outlet area, a partition plate is arranged in the A/O area and divides the A/O area into an anoxic tank and an aerobic tank in the length direction of the horizontal shell, an overflow opening/water passing opening is formed in the partition plate, an aeration device is arranged in the aerobic tank, and a branch partition plate is arranged in the anoxic tank in the length direction of the horizontal shell and divides the anoxic tank into two cavities communicating end to end, the two cavities are respectively an anaerobic section and an anoxic section, an oxidation ditch circulation channel is formed, and thewater inlet is positioned at the anaerobic section of the anoxic tank.

The invention provides a multi-stage dust remover by adopting bionic vanes for improving dust removing efficiency. The multi-stage dust remover comprises an inertial dust removing device, a bionic vane device and a spraying wet-type dust removing device, wherein the inertial dust removing device is in through connection with the bionic vane device; the bionic vane device is in through connection with the spraying wet-type dust removing device. By skillfully integrating an ordinary inertial dust remover with bionic vanes, a dry-type dust removing device and the spraying wet-type dust removing device, the formed multi-stage dust remover can be used for processing life and industrial dust with the over-standard concentration, and has the advantages of being light in weight, simple in structure, low in price, easy to maintain, convenient to operate and manage and the like.