61 results about "Source reduction" patented technology

The invention provides a systematic method for treating agricultural non-point source pollution in hilly areas. According to the systematic method, hilly uplands are reclaimed as counter-slope terrace lands, terrace lands per line are kept at equal height, and different lines of terrace lands are parallel mutually and are perpendicular to the inclination direction of upslope lands. The systematic method includes source reduction, runoff interception, process control and nutrient utilization, wherein source reduction refers to substitution for and reduction of chemical pesticides and chemical fertilizers; runoff interception is implemented by planting hedgerow on the external slope surfaces of the counter-slope terrace lands and planting land cover plants on the slope surfaces, dorsal furrows and terrace ridges; in process control, flood intercepting trenches, longitudinal drainage ditches and the dorsal furrows are formed and grit chambers, water-collecting wells and primary rainwater collecting devices are arranged to form a network; nutrient utilization is implemented by a pretreatment unit and a main treatment unit. The systematic method for treating the agricultural non-point source pollution in the hilly areas has the advantages that onsite terrain conditions are fully utilized, and corresponding ecological control and treatment methods are adopted in different forming phases of runoff and pollution, so that runoff nutrient cycling utilization efficiency is improved and production and discharge of the non-point source pollution are reduced.

The invention belongs to the field of solid waste treatment and resource recycle and reuse, relates to a technology for excess sludge reduction, and particularly relates to a method and an apparatus for source sludge reduction based on microwave sludge pretreatment. The method provided by the invention comprises the steps of adjusting a pH value of a water-sludge mixed solution obtained by concentrating the excess active sludge to 2.5-12; efficiently cracking the excess active sludge through microwaves under normal pressure opening conditions to increase bio-availability of the excess active sludge; and then reflowing the sludge obtained by the microwave sludge pretreatment to an active sludge tank to realize source reduction of the sludge. The apparatus provided by the invention mainly comprises a heat exchanger, a microwave and a PLC control system. The method is simple, short in process flow and high in efficiency, can realize the source sludge reduction. The apparatus is low in investment and is suitable for the pretreatment of the excess sludge of sewage treatment works in small and medium-sized cities.

The invention relates to an intelligent source reduction complete technology method for high-lead anode mud heavy metal pollutants in the industry of hydrometallurgy. Three technologies including real-time online monitoring, film preparing optimal regulating and mud removing intelligent identifying are integrated into a whole. The intelligent source reduction complete technology method for the high-lead anode mud heavy metal pollutants comprises the steps that after a lead-based anode new plate or a film-broken old plate is subjected to surface pretreatment to meet the requirement for surface roughness, key parameters such as the concentration, the temperature and the volume of manganese, lead, acids, suspended particulate matters and other matters in an anode film preparing system are monitored online in real time; regulating technology parameter combination is optimized on the basis of real-time detected data through the film preparing optimal regulating technology, and a compact film layer structure and the best lead sealing effect are obtained; and the purpose of removing mud without damaging the film is achieved according to a film-mud layered structure through the mud removing intelligent identifying technology, and the film-broken plate can be intelligently identified and return to the film preparing system again. According to the intelligent source reduction complete technology method for the high-lead anode mud heavy metal pollutants, integrated intelligent control over real-time monitoring, film preparing regulating and damage-free mud removing is achieved, corrosion pollution of lead is inhibited from the source, and the generation amount of lead-containing wastewater and high-lead anode mud is significantly decreased.

The invention discloses a method for testing a transformer on-load tap changer, and relates to the technical field of power supply maintenance. An on-load tap changer tester is connected with a tested transformer on-load tap changer in a tested mode to form a test loop, a direct-current resistance tester is connected with the on-load tap changer tester in parallel, and an error brought by interference in the external auxiliary direct-current source reduction testing process is utilized for improving the waveform acquisition precision. By means of the method, the waveform acquisition effect is better, and on-load tap changer testing is more accurate.

The invention provides a method for reducing the dosage of an extractant from the source of an acid extraction system and lowering the content of organic matters in an aqueous phase. The method comprises the following steps: adding a complex phase interface modifier into an acid extraction system of a solution to be treated; standing for separation to obtain extraction liquid and raffinate, wherein the complex phase interface modifier is prepared from the following components in parts by volume: 70 to 100 parts of alcohol solvent, 0 to 20 parts of ketone solvent, and 0 to 10 parts of ester solvent. By adopting the method, the problem of severe influence on equipment and products since the concentration of organic matters in wastewater is too high due to the dissolution or drift loss of theextractant in the extraction process of the acid extraction system can be solved, the loss of the extractant in the wastewater is reduced directly by 70 percent or more, the source reduction rate ofthe extractant is improved greatly, the content of the organic matters in the aqueous phase is lowered greatly, secondary pollution is lowered, the load on extraction equipment is lowered, and the product quality is improved.

The invention provides a systematic method for treating agricultural non-point source pollution in hilly areas. According to the systematic method, hilly uplands are reclaimed as counter-slope terrace lands, terrace lands per line are kept at equal height, and different lines of terrace lands are parallel mutually and are perpendicular to the inclination direction of upslope lands. The systematic method includes source reduction, runoff interception, process control and nutrient utilization, wherein source reduction refers to substitution for and reduction of chemical pesticides and chemical fertilizers; runoff interception is implemented by planting hedgerow on the external slope surfaces of the counter-slope terrace lands and planting land cover plants on the slope surfaces, dorsal furrows and terrace ridges; in process control, flood intercepting trenches, longitudinal drainage ditches and the dorsal furrows are formed and grit chambers, water-collecting wells and primary rainwater collecting devices are arranged to form a network; nutrient utilization is implemented by a pretreatment unit and a main treatment unit. The systematic method for treating the agricultural non-point source pollution in the hilly areas has the advantages that onsite terrain conditions are fully utilized, and corresponding ecological control and treatment methods are adopted in different forming phases of runoff and pollution, so that runoff nutrient cycling utilization efficiency is improved and production and discharge of the non-point source pollution are reduced.

The invention relates to a waste oil dehydration process; in particular, it relates to a new ultrasonic treatment process for dehydration of light waste oil and heavy waste oil in a refinery and dehydration recovery of oil field waste oil. The water-containing sewage oil enters the heat settling tank for oil-water separation after passing through the ultrasonic treatment device with a standing wave or traveling wave in the ultrasonic processor, or the water-containing sewage oil enters the heat settling tank with a standing wave or traveling wave ultrasonic device for oil-water separation. This process belongs to the physical demulsification dehydration method, which has strong adaptability to waste oil, is not affected by the properties of oil, and can quickly realize oil-water separation; it can realize oil-water separation in a short time, shorten the heat settling time and increase the final dehydration rate, Low operating costs. The technology is used to recycle the dirty oil, reduce pollution sources, and has good environmental protection and social benefits.

The invention discloses a mobile compression equipment patrol optimization method based on E2SFCA reachable analysis, and relates to the crossing field of municipal engineering, environmental engineering, remote sensing technology, mathematical modeling and computer technology. The invention aims to solve the problems that a reasonable patrol route of efficient garbage pretreatment and compression transportation integrated technical equipment cannot be determined at present, so that movable small garbage pretreatment equipment cannot be applied to villages and towns, and the garbage treatment efficiency of the villages and towns is low; and the source reduction demand of a sanitary environment in a village and town scene cannot be met. The method comprises the steps of firstly obtaining household garbage pretreatment demand conditions of a research area; dividing a service area for the garbage transfer facility; acquiring the spatial distance between the residential area and the transfer compression facility; then obtaining compression accessibility according to the demand condition and the spatial distance; and finally, obtaining patrol points according to the compression accessibility so as to obtain a patrol route. The method is used for obtaining the optimal patrol route of the mobile garbage compression equipment.

The invention relates to the technical field of industrial harmful waste recycling, and discloses a stainless steel cold rolling sludge recycling method which comprises the following steps of: (1) carrying out distinguishing treatment; (2) carrying out mixing treatment; (3) carrying out primary precipitation; (4) obtaining heavy metal sludge; (5) carrying out secondary precipitation; and (6) obtaining calcium salt sludge. According to the stainless steel cold rolling sludge recycling method, through two-stage treatment and segmented recovery, a heavy metal sludge cake and a calcium salt sludgecake are obtained conveniently, the heavy metal sludge cake is mainly composed of hydroxides of heavy metals such as Fe, Cr and Ni, the heavy metal sludge cake can be returned to a metallurgy processand utilized as a steelmaking slag former or sinter or pellet ore and other raw materials after being dried, the calcium salt sludge cake can be used as a cement mineralizer, a building material rawmaterial or a metallurgical auxiliary material, and can also fill up the landfill or be stacked as common industrial waste due to low heavy metal content, and practice shows that after the stainless steel cold rolling pickling wastewater is subjected to segmented treatment, mixed sludge source reduction is realized, and two sections of sludge are easier to comprehensively utilize.

The invention discloses a wet waste source reduction reclamation disposal system. The wet waste source reduction reclamation disposal system comprises a pretreatment device, a crusher, a sediment separating device, a centrifugal dewatering device, a facultative tank, a multi-disk screw press, an oil-water separating box, an anaerobic and aerobic treatment tank, an organic residue sterilizing treatment device, a high-energy ion purifier and a PLC control system. The PLC control system is in communication with the pretreatment device, the crusher, the sediment separating device, the centrifugaldewatering device, the multi-disk screw press and the organic residue sterilizing treatment device. According to the wet waste source reduction reclamation disposal system, the labor intensity of operators is reduced, treated sewage can reach the discharge standard, environment protection is advantageous, and a clean, hygienic and civilized living environment can be provided for people.

The invention discloses a garbage classification and treatment method. The garbage classification and treatment method at least comprises the steps of front-end treatment, transfer center treatment, sorting center sorting, renewable resource center utilization and tail-end treatment. In the front-end treatment, a garbage classification area is divided into a first area and a second area, a first garbage classification method is executed in the first area, a second garbage classification method is executed in the second area, wherein the first garbage classification method divides garbage intodry garbage, wet garbage and harmful garbage, and the second garbage classification method divides the garbage into recyclable garbage, other garbage, preprandial garbage, postprandial garbage and harmful garbage. According to the garbage classification and treatment method, the garbage treatment concept of ''separating the garbage for use and separating the garbage for necessary use'' is maintained, and the classification of maximum utilization of the garbage is realized; and meanwhile, because of the classification mode, the acceptability of common people is higher, the garbage source reduction and garbage recycling and harmlessness are realized.

The invention discloses a distributed rural domestic waste recycling device and an application thereof. The device comprises a waste pretreatment system, a sewage anaerobic fermentation tank and a sewage secondary treatment tank, wherein the waste pretreatment system comprises a household garbage can, a stirring system, an organic garbage decomposition tank and an inorganic garbage storage tank. Compared with the prior art, the distributed rural domestic waste recycling device and the application thereof have the characteristics of wide adaptation to fermentation raw materials, less one-time investment, simplicity and convenience in operation, low operation and management cost, capability of recycling part of clean energy resources, and the like, so that the source reduction of the household garbage is realized, the household garbage reduction rate is over 40%, the collection and transportation cost of the household garbage is greatly lowered, the on-the-spot disposal and the reclamation of the domestic sewage are realized, too many pipelines are not needed to be laid, the needs of distributed rural domestic waste treatment, low investment and low maintenance cost are met, and the popularization and utilization value is very good.