34results about How to "Short film setting time" patented technology

This case involves a composite carrier material for a biological fluidized bed and its preparation method. Diatomite is first purified by alkali etching-calcination-acid etching-calcination; it is grafted and modified with a silane coupling agent; Polymerization reaction with acrylamide and polyethylene glycol methacrylate to obtain polymer graft modified diatomite powder; the obtained product is dispersed in ethanol and spray-dried with activated carbon to obtain a composite carrier material for a biological fluidized bed. The composite carrier material of the present invention exerts the characteristics of the material together as a whole, enhances the adhesion with microorganisms, facilitates the growth of microbial film formation, and has a short film formation time, which improves water treatment efficiency; it is less affected by the water environment, and the density is moderate and easy Fluidization: In addition to being a place for microorganisms to attach and grow, the carrier material itself also has certain adsorption and flocculation capabilities, which can effectively adsorb metal ions and organic pollutants in wastewater, and then make water treatment more thorough through microbial degradation.

The invention discloses a method for treating coking wastewater, which belongs to the field of wastewater treatment. The method comprises the following steps that: wastewater of a coking plant enters a regulating reservoir for the adjustment of water quality and water amount, and orderly enters a hydrolytic tank, an anaerobic tank, a preaeration tank, a preliminary sedimentation tank, an aerobic tank, a secondary sedimentation tank and a coagulation reaction tank for treatment, wherein the hydrolytic tank and the preaeration tank are filled with a bio-cord filler; the sludge of the preliminary sedimentation tank refluxes into the hydrolytic tank and the anaerobic tank respectively; a clarifying solution of the secondary sedimentation tank refluxes into the anaerobic tank; and the aerobic tank adopts a moving bed bio-film reactor. The bio-cord filler adopted in the invention has short film formation time and high biomass, does not need repeated washing, and has strong shock resistance;and the moving bed bio-film reactor can fix a large amount of nitrobacteria with long generation time, and has no the problem of blocking. The method can remove high-concentration ammonia nitrogen and organic substances in the coking wastewater, and the COD and the ammonia nitrogen of treated effluent can synchronously achieve the primary standard of the national integrated wastewater discharge standard (GB9878-1996).

The invention discloses a high-efficiency suspended filler and a preparation method thereof. The high-efficiency suspended filler comprises hydrophilic non-woven cloth, wherein the hydrophilic non-woven cloth comprises a hydrophilic fiber layer and a repellent macromolecular polymer layer which are laminated together; the repellent macromolecular polymer layer is adhered to a rigid support. The preparation method comprises the following steps: melting a repellent macromolecular polymer and spraying out the repellent macromolecular polymer from a high-temperature melting shower nozzle to form fiber attached to the surface of the rigid support; spraying out hydrophilic fiber from a hydrophilic fiber shower nozzle and uniformly distributing the hydrophilic fiber on the surface of the repellent macromolecular polymer fiber; sizing the two kinds of fiber on the rigid support to form a cloth shape by a hot-pressing process, wherein a part of the repellent macromolecular polymer fiber and the rigid support are fused into supporting points; preparing the sheet-like filler into various required shapes by a cutting, sewing or hot-melting process. The high-efficiency suspended filler has the advantages of short film-forming time, long life and high cost performance.

The invention provides a kind of compound autotrophic nitrifying bacteria, its preparation method of solid microbial agent and the application in the sewage treatment containing high salinity and high ammonia nitrogen, this compound autotrophic nitrifying bacteria is produced by Bacillus and Pseudomonas The bacteria suspension is prepared by mixing 1‑2:2.5‑5 (V / V); the number of viable bacteria contained in the Bacillus suspension is 1×10 8 -1×10 10 CFU / mL, the number of live bacteria contained in the suspension of Pseudomonas bacteria is 1×10 8 -1×10 10 CFU / mL. The compound autotrophic nitrifying bacteria of the present invention is through the interaction of Bacillus and Pseudomonas, exerts its effect in the sewage with a salt content of 1-2.1wt%, and an ammonia nitrogen concentration of 300-500mg / L, and has high tolerance. Excellent performance in ammonia oxidation and nitrite oxidation, with a removal effect of over 95%. At the same time, the microscopic examination found that the bacterial activity was always maintained at 10 8 More than CFU / mL, it has higher activity.

The invention discloses a multistage-series constructed wetland sewage treatment system and method based on solar energy, which are used for multistage biochemical treatment on sewage. The sewage treatment system comprises an A<2> / O treatment device and a constructed wetland treatment system, which are connected in series; the constructed wetland treatment system is formed in such a way that a vertical flow constructed wetland and a horizontal flow constructed wetland are connected in series, and arranged in a shed film photovoltaic solar greenhouse with a ventilation device; an amorphous silicon film solar panel is laid on the outer surface at the top of the shed film photovoltaic solar greenhouse; when sun light energy irradiates the amorphous silicon film solar panel, one part of sun light energy is converted into electric energy, while the other part of sun light energy penetrates the amorphous silicon film solar panel to be used for plant photosynthesis. The sewage treatment system is high in efficiency, and the shed film photovoltaic solar greenhouse meets the illumination and temperature requirements of plants in normal growth in all seasons, achieves the low-cost solar energy generation, and has favorable economic benefits and environmental benefits.

The invention relates to a biofilter containing purification system and a method for purifying water bodies by using the same. A purification system with a folding layered biofilter comprises a nursery pond or a culture pond (a), a biofilter (b) and a backwash pond (c), wherein a partition plate is arranged in the biofilter (b), and due to the partition plate, water in the biofilter (b) flows from the upper layer to the lower layer in a folding mode; the partition plate is provided with a sinkable packing, and the upper layer of a water body of the biofilter (b) is provided with floating packing. The invention just relates to a biofilter, and through improving the biofilter and dividing the biofilter into an upper layer and a lower layer by using the partition plate, the water body space of the biofilter is effectively used, so that the area is saved and the operation is convenient. According to the invention, when a biofilm is cultured, sludge scraped from the wall and bottom of the culture pond is also adopted, so that the growth and reproduction of particular nutritive salt degraded bacteria in a water body are facilitated, the biofilm culturing time is short, and the running is stable.