37results about How to "To achieve the effect of purifying water quality" patented technology

The invention discloses a suspension filler for water treatment. The suspension filler comprises a supporting frame and a carbon filer bundle having two ends fixed on the supporting frame, the carbon fiber bundle comprises an inner-layer carbon fiber bundle and an outer-layer carbon fiber bundle, the supporting frame comprises a first annular frame, a second annular frame and a third annular, and the first, second and third annular frames are arranged in a mutual intersection manner. The inner-layer carbon fiber bundle substantially flutters in the supporting frame, the outer-layer carbon fiber bundle slightly flutters, and microbes and dirty substances in wastewater can be adhered and adsorbed to the suspension filler; the suspension filler for water treatment adopting the first, second and third annular frames to form the supporting frame can fully utilize the power of water flow and airflow to realize buoyancy motion, so the suspension filler for water treatment combines excellent material performances comprising high adsorption performance, high biological endophilicity and the like of the carbon fiber material with the optimized designs of the structure of the supporting frame, the inner-layer carbon fiber bundle and the outer-layer carbon fiber bundle, thereby the comprehensive performances of the obtained suspension filler are very good.

The invention discloses a composite microbial preparation and application of the same in treatment of water body with algal bloom. The composite microbial preparation comprises algicidal bacteria, a viscous bacterium and water-purifying bacteria, wherein the algicidal bacteria comprise enterobacterium and / or bacillus subtilis, the viscous bacterium is bacillus mucilaginosus, and the water-purifying bacteria comprise a photosynthetic bacterium and / or a nitrite bacterium. A preparation method for the composite microbial preparation comprises a first step of separately culturing each bacterium and a second step of culturing all the bacteria mixed in proportion. The invention has the following advantages: separate culturing enables each bacterium to grow in a most effective way, and application of a mixture of the separately cultured bacteria gives full play to effect of each bacterium in the alga-controlling composite microbial preparation; the composite microbial preparation can effectively overcome the problem of debated algicidal effect caused by current impact on the bacteria and achieves alga-removing effect as well as water purifying effect, especially a removal effect on elemental nitrogen in the water body; and a breakthrough is made to the limitation that a traditional microbial preparation is only applicable to a hydrostatic water body with a small area, and the composite microbial preparation is applicable to rivers, lakes and regenerated water bodies.

The invention belongs to the technical field of sewage treatment, and particularly relates to a sludge concentration and dehydration system and a dehydration method thereof. The system is provided with a precipitation cone hopper on the lower side of a sludge concentration tank; a sludge delivery pipe for delivering sludge solution into the sludge concentration tank is arranged on the sludge concentration tank, a clean water discharge mechanism for discharging clean water to the exterior of the sludge concentration tank and a sludge discharge mechanism for discharging concentrated sludge to the exterior of the sludge concentration tank are also arranged on the sludge concentration tank; and the system also comprises a dissolved air floatation mechanism consisting of a dissolved air pump inlet pipe, a dissolved air pump, a buffer and a dissolved air water distributor. In the dehydration method, the sludge in the water continuously floats by the dissolved air technology of the dissolved air pump, so that the separated water becomes clean; and when air floatation is stopped and the clean water is discharged, the floating sludge naturally falls into the precipitation cone hopper and reaches the dehydration requirement. The dehydration effect of the dehydration system is good, the water content of the sludge can be furthest reduced, conditions are created for subsequent sludge dehydration and drying processes, and the operating costs of dehydration and drying are reduced.

The invention relates to an afforestation and soil preparation method for water conservation forest in north China, the method comprising following steps: (1) preliminary investigation of a selected water conservation forest area in north China; (2) forest land clearance in the water conservation forest area; (3) in the water conservation forest area, soil preparation with narrow horizontal strips and fish-scale pits along the contour line in an alternate form. According to the afforestation and soil preparation method, by performing investigation on the selection indexes of forest areas and performing soil preparation with narrow horizontal strips and fish-scale pits along the contour line in an alternate form, the soil porosity and infiltration capacity are increased so that soil and water conservation is achieved. The method can be applied under all kinds of terrain conditions. The method has following beneficial effects: small ground-breaking surface and small investment. By use of the method and in the long run, the differences in soil water distribution can be changed; the mechanism of selection through competition between individual vegetation can be promoted; stability and long effectiveness can be maintained; water and soil conservation and water purification can be achieved.