536 results about "Self purification" patented technology

The invention discloses a method for managing town black and olid river pollution in situ by utilizing biological repair technology, which takes the steps and measures of aerating and oxygenizing in riverway, adding a complex microbial agent, biologically repairing bottom sediment, arranging a bio-nest system and the like, so as to control and eliminate the exogenous and endogenous pollution of the river, purify the water quality of the river, improve the self-purification ability of the water body and achieve the purpose of eliminating black and olid. The method does not need to build structures in the riverway or lead the river water out of the riverway to be treated, or dredge the bottom sediment in the river, therefore the method is generally applicable to incomplete sewage interception and dredging or the rivers which can not be intercepted sewage or dredged temporarily, and the in situ treatment to the riverway which is affected by tide and has complicated fluid variation. Therefore, the method which can lead the water body to recover normal ecological function provides the practical, economic and convenient treatment method for various town black and olid rivers.

The invention relates to the field of automobiles, and belongs to a PP composite material special for low VOC (volatile organic compounds) high performance automobile interior trim parts and a preparation method thereof. The special material is prepared from the following compositions by mass portion: 60 to 80 portions of polypropylene (PP), 10 to 25 portions of reinforcing filler, 10 to 15 portions of toughening agent, 0.5 to 2 portions of inorganic photocatalyst, 0.2 to 0.5 portion of antioxidant and 0.1 to 0.5 portion of light stabilizer. The prepared polypropylene composite material has TVOC less than 40 mu gC / g, the notch impact strength of a cantilever beam at 23 DEG C between 10 and 42KJ / m, bending modulus between 1,000 and 2,400 MPa, and the melt index at 230 DEG C and 2.16 Kg between 10 and 30g / 10min. The PP composite material of the low VOC interior trim parts for the automobiles has low cost, good stability and the function of self-purification of VOC, and can be widely applied to production of the automobile interior trim parts.

The invention discloses an ecological restoration and purification method for landscape water environment which is characterized by comprising the following steps of (1) performing bottom mud sterilization and activation treatment; (2) splashing a microbial flora compound preparation; (3) reconstructing a submerged communities; (4) repairing an aquatic ecosystem food chain; and (5) performing aquatic ecosystem conservation management. According to the ecological restoration and purification method for the landscape water environment, a biological integrated control technology is applied, and the water purification effect is achieved by use of submerged plants; furthermore, decomposers, namely microorganisms in an ecosystem are fully utilized, and multiple types of aquatic animals are put in the aquatic ecosystem, so that the ecosystem food chain is perfected, various aquatic species promote and restrict one another, the whole riverway, lake, pond and wetland system is kept in dynamic balance for a long time, the original self-purification capability of the aquatic ecosystem is restored, and a long-term stable effect is achieved.

The invention relates to the technical field of water environment ecological restoration, in particular to a system for restoring bio-ecological environment of a micro-polluted riverway, wherein a biological contact oxidation module adopts elastic three-dimensional packing or combined packing, the riverway coastal area is provided with emergent aquatic plant floating floors or floating plant floating floors, the upstream and the downstream of the riverway are provided with floating plant purification zones, and the water surface coverage of the floating floors is between 15 and 20 percent; both coasts of the riverway are plated with emergent aquatic plants and the water surface is planted with floating plants, and water areas with more than two times of transparency are plated with submerged vegetations; and sloping fields on both sides of the riverway are planted with un-germinated poplar or willow branches through cottage; and simultaneously, the poplar or willow branches are embedded into sloping banks shallowly and horizontally according to contours in a mode of being bundled up into a bunch of fascines at different positions of the sloping fields. Compared with the prior art, for the ecological restoration and construction, the system achieves self-purification, self-regulation and self-sustaining of pollutants within certain concentration range, and is an effective path for improving water quality under the condition that basin-wide pollutant cutoff cannot be performed at present.

The invention relates to the technical field of ecological restoration of water environment, and especially relates to a biological and ecological restoration system of eutrophic rivers and lakes. Ecological floating beds are laid along a bank, the water surface coverage rate of the floating beds is 15-20%, and each of the floating beds consists of a floating plate, planting baskets, a planting basket filler, floating bed plants, a nylon net, immobilized microorganism particles, a biological filler and artificial waterweeds. The planting baskets are placed in the planting basket holes of the floating plate, the planting basket filler is arranged in the planting baskets, the floating bed plants are planted in the planting basket filler, the nylon net suspends below the floating plate, the immobilized microorganism particles suspend between plant roots, the biological filler suspends below the nylon net, the artificial waterweeds are planted at the water bottom, and submerged plants are properly planted in a water area with two times in the transparency. The system has the advantages of simple and economic carrier, high strength, good durability, reliable planting, natural water ecological landscape, and engineering water quality improvement; and compared with systems in the prior art, the system focuses on the ecological restoration and construction of river and lake water, realizes the self purification, self regulation and self maintenance of pollutants in a certain concentration range, and is an effective way to improve the water quality without all-basin pollutant interception at the present stage.

The invention discloses a construction method for ecological restoration of riparian vegetation of mountain rivers. The method includes the following steps: (1), for restoration of aquatic vegetation, dispersedly planting potamogetonaceae and hydrocharitaceae submerged plants high in washing-out resistance in a project region; (2) for restoration of riverway rock and boulder vegetation, planting wetland plants strong in washing-out resistance in rock and boulder regions and the like in a riverway in the project region; (3) for restoration of waterfront plants, planting emerging plants and aquatic plants with washing-out resistance and deep roots between the riparian normal water level and the two-year flood level in the projection region; (4) for restoration of riparian vegetation, planting waterlogging-tolerance trees and shrubs of juglandaceae, betulaceae and the like between the two-year flood level and the 20-year flood level in the project region, and planting gramineae and cyperaceae herbaceous plants with deep roots in ground covers. By the method, the ecological problems about riparian water and soil erosion, weak river's self-purification capacity, sharp decline in biodiversity and the like are solved effectively, feasible and effective ecological remediation measures are provided for natural restoration and reconstruction of river banks and riverways.

The invention relates to a closed or semi-closed landscape water body governance method including an aeration oxygen filling process, a biological treatment process and an artificial ecological reconstruction process; the biological treatment process includes adding microbial agents and biological growth-promoting agents; the artificial ecological reconstruction process includes bionic carbon fiber ecological grass and a compound ecological floating island technology; the water quality of the water body is improved by the aeration oxygen filling process and the biological treatment process; an ecological system is reconstructed and restored by the artificial ecological reconstruction process, and the water body landscape function is restored and promoted. The method can effectively improve the water quality of the water body, rapidly restores the water body ecological system and the self purification ability, and restores and promotes the water body landscape function; the water quality of the water body after governance achieves ''environmental quality standards for surface water'' (GB3838-2002) IV-class water standards. The method allows water quality improvement, ecological restoration and landscape promotion to be combined, has the characteristics of energy saving, good algae inhibiting effect, fast ecological restoration, low governance cost and the like, and has relatively good social benefits and ecological benefits.

The present invention belongs to the technical field of water ecological restoration, and specifically discloses a rapid method for constructing a river way water ecosystem, the method includes the following steps: 1, collecting of to-be-repaired river way water ecological information; 2, detailed analysis of pollution information, sewage interception reoxygenation and blackness and odor removal by microbial decomposition; 3, planting of emergent proper aquatic plants, submerged plants and the like according to water and hydrological information; 4, control of algae by aquatic animals; and 5, water ecosystem maintenance; wherein aquatic plants are usually harvested in November each year, and plant body residues are cleaned up in early spring. Through combination of an ECO-EGG plug-flow aerator and the constructed river way water ecosystem, physical, chemical and biological-ecological approaches are effectively combined for phased treatment, water quality is rapidly improved, water eutrophication is controlled, water self-purification capacity can be improved, the water ecological structure and function can be restored, water quality can be long term and effectively improved, meanwhile the effectiveness, long effectiveness, economical efficiency and ecological compatibility of polluted water treatment can be unified.

The invention relates to an environmental engineering and water treatment technology and aims to provide a self-sustaining type landscape restoration ecological floating island device. The device comprises floating beds, floating islands which consist of aquatic plants planted between the floating beds, photocatalysis ribbons, and aeration devices which supply power by using solar systems; and each photocatalysis ribbon comprises a horizontal loading main body which is submerged below a water surface, a plurality of holes for circulating water bodies are distributed at the bottom of each photocatalysis ribbon, a carrier material loaded with a photochemical catalyst is fixed on the surface of each photocatalysis ribbon, and an overflow weir is arranged at the periphery of each photocatalysis ribbon. Each aeration device comprises an aeration pipeline and a motor. The organic matter and nitrogen and phosphorus are removed from eutrophic water by combining a photocatalysis technology, an ecological floating island technology and a solar energy technology; nitrate nitrogen and ammonia nitrogen are converted into nitrogen by the photocatalysis technology simultaneously; the accumulation of nitrogen pollutants is reduced, and nitrate is prevented from being converted into nitrite or ammonium; and dissolved oxygen in the water body is increased by using the aeration devices, and the self-purification capacity of the water body is improved, so the aim of restoring the eutrophic water well is fulfilled.

The invention provides a black and odorous water / eutrophicated water treatment method and device, and application thereof. The method mainly comprises the following steps: (1) treating river course sediment; (2) treating by a bypass high-efficiency bioreactor; (3) oxygenating the river course; and (4) adding a microbial inoculant and a stimulant. The external sources are controlled: the upstream uncontrollable pollution source or severe black and odorous / eutrophicated water is pretreated by a bypass high-efficiency bioreactor, and the microbial-ecological restoration measures are taken to effectively control the black and odorous / eutrophicated water pollution sources. The black and odorous / eutrophicated water sediment is digested to reduce the endogenous pollution. The bypass high-efficiency bioreactor technique and the oxygenation technique are combined, so that the quality of the black and odorous / eutrophicated water is maintained; and the self-purification capacity of the water is enhanced, thereby providing a feasible restoration method for treating the black and odorous / eutrophicated water.

The invention relates to a self-clean self-purification cement-based facing material and a production method thereof. The self-clean self-purification cement-based facing material comprises the following components in parts by weight: 20-30 parts of white silicate cements, 5-10 parts of mineral admixtures, 0-20 parts of quartz sands of 20-30 meshes, 20-30 parts of quartz sands of 40-70 meshes, 20-30 parts of quartz sands of 70-100 meshes, 1-4 parts of kieselguhr, 2-4 parts of zeolite, 0.2-0.6 part of nanometer titanium dioxide, 0.5-2.0 parts of EVA redispersible latex powder, 0.2-0.8 part of organic silicon water repellent, 0-1 part of ferric oxide inorganic pigment and 0.1-0.7 part of other chemical additive. The self-clean self-purification cement-based facing material, provided by the invention, has the advantages of good self-clean property, good self-purification property, good air purification capacity, good adhesive property, good construction property, good endurance quality, higher compression strength and the like, when the self-clean self-purification cement-based facing material is used for decoration of facings of an inner wall space and an outer wall space of a building, the air purification effect and the decoration effect are good, and the self-clean self-purification cement-based facing material can be applied for decoration engineering of all kinds of facings of walls of buildings.

The invention provides an ecological restoration method for soil in a chemical industrial area. The ecological restoration method includes the following steps that pollution indexes of the soil in the chemical industrial area are detected; deep ploughing is conducted, clay not smaller than 30 cm under the ground surface is turned up, and the soil is loosened and watered to be wet; a compound microorganism bacterium agent is thrown into the soil with the dosage ranging from 30 ppm / m<2> to 50 ppm / m<2>; terrestrial invertebrates are thrown into the soil; plants are planted on the soil; the pollution indexes of the soil in the chemical industrial area are detected; and the above steps are repeated every other 30 days to 60 days till the quality of the soil meets the requirements. By means of the ecological restoration method for the soil in the chemical industrial area, biological diversity of the soil is restored, the quality of the soil is improved fundamentally, the self-purification capability of the soil is restored fundamentally, and the pollution phenomenon is effectively eliminated. The method is used for strengthening the self-restoring capability and the self-cleaning capability of the nature, and meanwhile the ecological restoration method has the beneficial effects that the running cost is low, and the pollution treatment effect is good.

The invention discloses a method for ecological control on black-odor watercourse by combining electrochemistry with biology. The method comprises the following measures: (1) carrying out biological catalytic oxidation, electrochemical treatment and oxygenation aeration treatment; (2) finishing electrochemical treatment, feeding a microorganism agent, and simultaneously keeping oxygenation aeration treatment; (3) spreading a bottom sludge biological agent, and simultaneously keeping oxygenation aeration treatment; (4) arranging biomembrane systems at certain intervals; and (5) arranging artificial floating islands, and planting emerging hydrophytes and aquatic plants on the artificial floating islands. The method is economical and practical, and achieves the effects of rapidly controlling, eliminating blackness and odor of water, prolonging the biologic chain of the watercourse, increasing the biodiversity of water and improving the water self-purification capability of the watercourse.

The invention discloses a particulate matter mass concentration detector with a self-purification system, belonging to the technical field of environmental detection. The particulate matter mass concentration detector comprises a photoelectric sensing system, a signal acquiring and processing system and a self-purification system, wherein the photoelectric sensing system comprises a laser illumination system, a sampling gas path and a scattered light collecting system, and the scattered light collecting system is used for collecting scattered light in a photosensitive area, converting light signals into an electric signal and transmitting the electric signal to the signal acquiring and processing system; and the self-purification system is characterized in that an air blowing pump is communicated with the sampling gas path by virtue of an HEPA pipe. The particulate matter mass concentration detector disclosed by the invention mainly comprises a self-purification device so as to prevent dust particles left in the photoelectric sensing system from polluting an optical system to improve the working stability of the optical system and prolong the service life of the optical system; moreover, the detector can be used for calibrating and calculating the mass concentration of the dust particles which are collected in a normal working state.

The invention discloses an in-situ remediation method of sediment in rivers, which comprises the steps that: (1) aboriginal microorganism liquid, biological growth stimulation liquid and biological detoxification liquid are fully mixed according to a weight ratio of 8-10: 0.8-1.5: 0.8-1.2; (2) a spray hopper gun or an injection method is adopted to inject the mixed liquid obtained in step (1) to the bottom of the sediment in rivers and the concentration of the aboriginal microorganism liquid is 0.010 multiplied by 10<-6>- 0.015 multiplied by 10<-6>g / m<3>; (3) after 5-7 days, the biological growth stimulation liquid is injected into the sediment in rivers each day and the weight of the biological growth stimulation liquid is the same with the weight of the mixed liquid in step (1); then the biological growth stimulation liquid is injected in a halved amount each day for 25-30 days. The method of the invention has good treatment and remediation effect, simple operation and little influence on normal municipal administration and the life of residents. A river flow aerobic self-purification ecological system established can keep persistent good state; good conditions are created for the establishment of the river flow aerobic self-purification ecological system so as to completely eliminate malodorous black river.

The invention discloses a method for treating aquaculture wastewater. The method comprises the following steps of: performing modular processing on wastewater by using microalgae and beneficial bacteria; and throwing snails, filter-feeding fishes and other aquatic animals into a water body to realize self-purification of an aquaculture water environment after the modular processing. Dominant and beneficial microalgae such as diatom, green algae and the like capable of absorbing nitrogen and phosphor in the aquaculture water body are screened out, inoculated, rapidly cultured and put into the aquaculture water body; the water color is regulated and the alga concentration is controlled by the methods of rational fertilization and rotifer inoculation; the beneficial bacteria are bacillus and photosynthetic bacteria capable of degrading organic matters and ammonia nitrogen in the water body; the beneficial bacteria and feed are proportionally mixed before the feed is put into the water body; after the feed is put into the water body, an underwater biomembrane taking the feed as a matrix is formed; the nitrogen, the phosphor and other harmful pollutants in the aquaculture water body can be effectively removed by jointly using the microalgae and the beneficial bacteria; simultaneously, the utilization efficiency of the feed can be improved by mixing the beneficial bacteria and the feed; and the water body is processed by using the microalgae and the beneficial bacteria, and then the snails and the filter-feeding fishes are put into the water body to prevent excessive multiplication of phycomycete, so that the self-purification of the aquaculture water environment can be realized.

The invention discloses a self-purification device of disturbing typed artificial hidden flow marshland and purifying method, which is characterized by the following: displaying cube-boxing type; filling packing matrix into pool; planting vegetation on the upper surface of packing matrix; equipping cloth water pipe; incoming water pipe on the two sides of marshland purifying pool; making upper of water level balancing tank higher than marshland purifying pool; penetrating aerated pipe on the bottom of marshland purifying pool; aerating into marshland purifying pool with aeration machine; discharging assembling water from exhaust pipe. The invention possess short time limit for a project and low operation cost.

The invention relates to a method for preparing carbonized bamboo chopsticks by utilizing carbonized bamboo chips with uniform shallowness, which is characterized in that the method comprises the process steps: 1. the pretreatment of a bamboo material, in which the bamboo material is transversely sawn at intervals along the length direction of the bamboo material, and each section of sawn bamboo material is chopped into four pieces; 2. bamboo material carbonization with uniform shallowness, in which the large bamboo materials are placed into a carbonization furnace, water vapor is introduced as shielding gas, the carbonization is performed for 2 to 3 hours at a temperature increase rate of between 5 and 10 DEG C / h, and finally the carbonization temperature reaches between 160 to 180 DEG C, 180 to 200 DEG C, 200 to 220 DEG C, and 220 to 40 DEG C respectively; and 3. the preparation of the carbonized bamboo chopsticks, in which joints of the obtained carbonized bamboo chips are subjected to grinding processing to be prepared into flat boards, and then a chopstick forming machine is utilized for processing to be formed. The method has the advantages that the carbonized bamboo chopsticks are not added with any chemical agent during the production, has no pollution and simple treatment process, and has the advantages of good durability, dimensional stability, moisture protection, mold prevention, moth prevention, sterilization, powerful self-purification function and so on.

The invention relates to a recycling comprehensive treatment method for endogenous pollution of substrate sludge of a lake. According to the self purification ability of the lake and the input / output quantity of a pollutant, the polluting substrate sludge deposited at the bottom of the lake is dug up, thereby eliminating the residual pollutant exceeding the self purification ability and realizing the purification of the lake according to the self purification ability of the lake. The polluting substrate sludge in the lake is treated and recycled by adopting the following treatment modes of: (1) digging the polluting substrate sludge in the lake; (2) eliminating a heavy-metal pollutant in the slurry of the polluting substrate sludge; (3) eliminating a toxic organic pollutant in the slurry of the substrate sludge of which the heavy metal content reaches the standard; and (4) recycling the substrate sludge after the heavy-metal pollutant and the toxic organic pollutant are treated. By treating the lake with the endogenous pollution of the substrate sludge with the method, most of the endogenous pollutant inside the lake can be removed, the release of the pollutant of the substrate sludge to a water body is reduced, the pollution of the water body is fundamentally solved, and the balance of an ecological system is effectively maintained.

The invention discloses a landscape water-body water-quality maintaining and self-purifying system integrating functions of landscape and biological ecological restoration. The system comprises an artificially intensified water quality purifying system, a biological control system and a water circulation system, and is used for ecological maintenance and self-purification of the campus landscape water body. By the artificially intensified water quality purifying system, mechanisms of water circulation and purification are utilized, so that the aim of purifying the landscape water-body water-quality is fulfilled; the artificially intensified water quality purifying system comprises an aeration oxygenation system, an ecological floating bed and a multi-element combined artificial wetland; the biological control system consists of an ecological island and an aquatic animal and plant system and is used for assisting the artificially intensified water quality purifying system to further improve the self-purification capability of a landscape water-body ecological environment; and each system is circularly connected with a processing unit by a water pump and gravity flow. By the landscape water-body water-quality maintaining and self-purifying system, the impact resistance and the water-body water-quality purifying capability of the campus landscape water-body ecological environment can be improved, and the problems of the pollution to the campus landscape water-body and landscape degradation are solved. The landscape water-body water-quality maintaining and self-purifying system is low in cost, low in investment, low in energy consumption, good in purifying effect, and free from secondary pollution.

The invention relates to a method for forming an ecologically-sewage-purifying compound riverbed wetland system, which is characterized in that: a 30-60mm round gravel, a 12mm medium gravel, a 6mm gravels as well as coarse sands and soil matrixes are filled in the new riverbed from the lower part to the upper part to form a compound riverbed and the top of a shoal of the compound riverbed is positioned below the low water level of the river; the aquatic plants are planted on a soil layer of the shoal of the compound riverbed; the deep grooves and the slopes are protected and built by ecological concrete; thus, the ecological ecologically-sewage-purifying compound riverbed wetland system is formed. The invention has the advantages that a comprehensive treatment system with the plant-the matrix-microorganism is formed, thus enhancing self-purification capability of the river, purifying water body of the river and improving water environmental quality of the river; section form of the riverbed is transformed into a compound riverbed structure in which the shoal and the deep grooves exist simultaneously and the riverbed wetland system is arranged in sinuous way in longitudinal river, which facilitates perch and growth of the aquatic creature and diversification of the river creature; a water distributor is laid to carry out the depth treatment for tail water reaching the standard; the invention has the advantages of simple structure and construction, convenient operation, stable function and low manufacture cost.

The invention discloses a large deep lake water ecosystem restoration method. The large deep lake water ecosystem restoration method adopts basic condition improvement, a lake reservoir fencing net separation and partition technology, a transitional zone wash-preventing technology system, an inflow water front-arranged reservoir pre-treatment system, an ecological plant floating island construction, planting of submerged plants and floating-leaf vegetations in a planting area, spreading and planting of submerged vegetations in a deep-water area, a food network chain establishment, repair and management technology system, a sediment-water interface nutrient salt control system, a microbial membrane strengthening system, a species diversity habitat system and a lake water ecosystem protection technology. By the adoption of the large deep lake water ecosystem restoration method, the water body pollution load is effectively reduced, the water self-purification ability is improved, and a water body can be clear and be free of color and smell and accordingly is suitable for human to use.

The invention relates to a river course ecological system for treating non-point source low-pollution water. According to the river course ecological system, ecological dirt blocking ditches are built at the two sides outside river banks of a river course, so that non-point source high-pollution water from agricultural runoff and rural sewage cannot directly enter the river course and is prevented from being mixed with river water to form into a large amount of low-pollution water to affect the river water quality; meanwhile, estuarine artificial wetland systems are built at outlets of the ecological dirt blocking ditches to forcefully treat sewage which is guided by the ecological dirt blocking pollutant intercepting ditches to enter the river course; and three-stage ecological bank protection comprising emergent aquatic plants, wetland plantsbog plants and shrubs and arbors is built at the inner sides of the river banks of the river course so as to improve the self-purification capacity of the water body in the river course and the flood control capacity. The river course ecological system comprehensively solves the problems of collection and treatment of the non-point source low-pollution water in terms of source pollution interception enhancing, river course self-purification capacity improving and pollution outflow controlling.

The invention discloses a ferro manganese complexes for advancing the multi-halogenating organism dehalogenation detoxifcation, which is composed of a metallic element and a ligand, with the mol ratio 1:1 to 1:9. The metallic element is iron, manganese or the ferro manganese mixture, while the ligand is an organic ligand or an abio-ligand. The ferro manganese complexes can be applied to advance the dehalogenation detoxifcation of the contamination such as multi-halogenating organism etc, and accelerate the harness of the organic pollutant in the electron rubbish pollution place; meanwhile the natural self-purification capacity of the soil is fully utilized and exerted, by the exogenous matter adjustment, the processing power of the environmental pollutant on the soil is advanced, which has high applying foreground.

The invention discloses an environment-friendly self-purification secondary water supply tank. The secondary water supply tank comprises a water supply tank body, wherein a water inlet pipe is arranged at the top part of the left side wall of the water supply tank body, a water outlet pipe is arranged at the bottom part of the right side wall of the water supply tank body, and a maintenance opening is formed in the top part of the right side of the water supply tank body; a driving motor is installed at the bottom part of the water supply tank body, and sewage outlets are formed in two sides of the driving motor; a driving shaft is arranged between a supporting bearing at the top part of the water supply tank body and a rotating disc; rotating rolling wheels are arranged on the two sides of the bottom part of a driving rod, and the rotating rolling wheels are clamped in rotating sliding grooves at the top part of the rotating disc; the driving rod is fixed at the center of the rotatingdisc, the driving rod is located in a gear cavity, and the driving rod is sequentially provided with a driving gear and a main gear from bottom to top; and cleaning brushes are arranged on a rotatingcleaning rod, and soft brushes are arranged on a fixed cleaning rod. According to the secondary water supply tank, the rotating cleaning rod capable of autorotation and revolution is used for achieving rapid cleaning of the water supply tank body, the soft brushes and the cleaning brushes can be self-cleaned with each other, water discharging an d manual cleaning are not needed for the water supply tank, and the secondary water supply tank is environment-friendly, water-saving and practical.

The invention relates to a distributed recycling system and method for sulfur in coking industry. Based on coking flow system resource balance, the self-purification function of coking flows are brought into full play, the system considers coupling treatment of sulfur foams, sulfur-containing waste gas and sulfur-containing waste liquid, waste materials are recycled, and the resource process value is increased. According to the technical scheme, sulfur foams are purified, then, pure sulfur is obtained, incineration is performed to produce acid, and obtained concentrated sulfuric acid absorbs ammonia in coke oven gas to produce ammonium sulfate; the desulfurization waste liquid is subjected to decoloration and then subjected to sulfo-oxidation, sulfur is separated out for incineration to produce acid, after solution crystallization and separation, ammonium sulfate and ammonium thiocyanate mother liquor are obtained, the ammonium thiocyanate mother liquor is incinerated to produce SO2, ammonium hydroxide is used for absorbing the produced ammonium sulfite, the ammonium sulfite is oxidized to produce ammonium sulfate or ammonium sulfite to be adopted as a denitrification agent for flue gas denitrification; waste heat of coke oven flue gas is recycled, the coke oven flue gas is mixed with ozone, some or all NO in the flue gas is oxidized, then, the flue gas and the recycling process tail gas are subjected to desulfurization and denitrification, and finally ammonium sulfate and ammonium nitrate are produced.

The invention discloses a method for treating black and odorous water body and bottom mud thereof. The method comprises the following steps that 1, a microelectrolysis material is added to the bottom mud of the black and odorous water body, and the microelectrolysis material is mixed with the black and odorous water body bottom mud, wherein the dosage of the microelectrolysis material is 0.1%-5% of the weight of the bottom mud of the black and odorous water body; 2, an oxidant is injected into or sprayed in the black and odorous water body bottom mud with the microelectrolysis material, wherein the dosage of the oxidant is 0.1%-1% of the weight of the black and odorous water body. By means of the method for treating the black and odorous water body and the bottom mud thereof, desulphuration and denitrification of the bottom mud can be achieved, the situation that the bottom mud is converted into a facultative state from an anaerobic state is facilitated, black-odor of the water body can be eliminated rapidly, and the water body self-purification function is restored. The method for treating the black and odorous water body and the bottom mud thereof is suitable for comprehensive treatment of the black and odorous water body and a river channel.

The invention relates to desulfurized gypsum based functional mortar for coating and a preparation method thereof. The desulfurized gypsum based functional mortar for coating comprises the following components in parts by weight: 20-35 parts of desulfurized gypsum, 5-10 parts of S95 superfine slag powder, 50-70 parts of quartz sands, 3-6 parts of kieselguhr, 0.2-0.5 parts of nanometer titanium dioxide, 0.5-1.5 parts of redispersible latex powder, 0.05-0.2 part of cellulose ether, 0-0.2 part of defoaming agent, 0.3-0.8 part of water repellent, 0.5-1.0 part of lithium carbonate early strength agent and 0.02-0.05 part of retarder. The desulfurized gypsum based functional mortar for coating, provided by the invention, has the advantages of good self-purification property, good self-humidifying property, good adhesive property, good construction performance, higher compressive strength and the like, and has good effects of purifying the air and adjusting the humidity when plastering an indoor wall of a building, so that the desulfurized gypsum based functional mortar for coating can be applied for plastering engineering of all kinds of indoor walls of buildings, and a large amount of industrial solid wastes are utilized with lower economic cost, and good environmental-friendly, energy-saving and waste utilization effects.

The invention discloses a self-purification type air purifier, and belongs to the field of air purifiers. The self-purification type air purifier comprises a primary filter net, an electrostatic dust collector located above the primary filter net and a control cabinet electrically connected with the electrostatic dust collector; the side face of the primary filter net and the side face of the electrostatic dust collector are each provided with a spraying device and a heating device, and the control cabinet is electrically connected with the spraying devices and the heating devices; the control cabinet controls the spraying devices to flush the primary filter net and the electrostatic dust collector, and the control cabinet controls the heating devices to dry the primary filter net and the electrostatic dust collector; according to the self-purification type air purifier, a cleaning device is arranged to be capable of effectively removing pollutants gathered on the electrostatic dust collector, the primary filter net and other components, the harmful effect caused by covering of the pollutants on the electrostatic dust collector, the primary filter net and other components can be removed, and the service life of the air purifier is prolonged.