The present invention discloses a method for preparing a simultaneous nitrogen and phosphorus removal lightweight material and the use thereof, and belongs to the technical field of environmental functional materials and sewage treatment. In the present invention, sulfur and an iron-based component are thoroughly melted and dispersed to obtain a molten mixture, where the iron-based component is a mixture of iron sulfides with carbonates of calcium and magnesium; and the above molten mixture is subjected to a foaming treatment to form the simultaneous nitrogen and phosphorus removal lightweight material. The simultaneous nitrogen and phosphorus removal lightweight material of the present invention has characteristics of high porosity, a large specific surface area, a light weight, and a high reaction activity. The resultant lightweight material, used as a microbial carrier and an electron donor for a biochemical reaction, is applied to a reactor such as a fixed bed or fluidized bed for sewage treatment, with the advantages of a good microbial attachment performance, a high denitrification rate and a good phosphorus removal effect.

An apparatus and a method for removing nitrogen and phosphorus from sewage by using sponge iron and activated sludge are disclosed herein. The apparatus comprises a raw tank, a pH adjusting tank, a primary SBR reactor, a secondary SBR reactor, an intermediate tank, and a discharge tank; by modification of sponge iron, preparation of composite filler, sludge inoculation and domestication, and sewage treatment, an effect of simultaneous denitrification and dephosphorization is achieved in one reactor using the combined action of sponge iron and activated sludge with high nitrogen and phosphorus removal efficiency.

A medium material for removing phenol contamination from groundwater, a method of producing the same, and use of the same id disclosed. In at least some embodiments, the medium material is a granular material which has an average particle diameter of 0.5-1.5 cm and is formed from a bacteria-entrapping solution, a manganese sand filter material, modified bentonite, and biochar at a mass ratio of 1:0.2-0.4:0.2-0.4:0.1-0.2 by a series of processes including strain culturing, catalysis, mixing, solidification, and the like. The medium material can remove phenol from groundwater, is a safe and environment-friendly material, has a long service life, and/or achieves waste treatment with waste.

The present invention relates to the technical field of environmental engineering, and particularly relates to a method for treating and recycling waste slurry in bobbin paper production. The present invention employs aerobic granular sludge technology-based two-stage process of treating and recycling waste slurry in bobbin paper production, and has features of low agent feeding, small floor space occupation, a short operating cycle, and easy controllability. By treating a high-load waste slurry in an adsorption section having aerobic granular sludge, fibrous materials in the waste slurry can be concentrated efficiently and resource substances can be recycled. By treating water discharged from the adsorption section with aerobic granular sludge in a biochemistry section, a water release can be guaranteed to stably meet the standard. By employing the method, the amounts of the fibrous materials and proteins adsorbed by the aerobic granular sludge in the adsorption section reach 710 mg/g MLSS and 140 mg/g MLSS respectively, the concentrations of COD, NH4-N, TP and SS of water released from the biochemistry section are 98 mg/L, 4.1 mg/L, 0.8 mg/L and 100 mg/L respectively, and the removal rates of COD and SS reach 98.8% and 96.2% respectively, enabling water release to meet a corresponding release standard.

The microorganism-containing biocatalysts disclosed have a large population of the microorganisms irreversibly retained in the interior of the biocatalysts. The biocatalysts possess a surprisingly stable population of microorganisms and have an essential absence of debris generation from metabolic activity of the microorganisms. The biocatalysts are composed of highly hydrophilic polymer and have an internal, open, porous structure that promotes community phenotypic changes.

The present invention relates in general to municipal wastewater treatment, and in particular, to a new biological fluidized bed process with high concentration powder carriers used for the treatment of municipal wastewater, wherein the process comprises: flowing the wastewater through a coarse screen and a lifting pump firstly, lifting to a fine screen and grit chamber, and then entering a HPB biochemical tank; dividing the HPB biochemical tank successively into an anaerobic zone, an anoxic zone, an aerobic zone and a concentrated separation zone along the flow direction of the wastewater, adding a compound powder carrier to the anaerobic zone, the anoxic zone and the aerobic zone respectively, and stirring and mixing into a mixture; flowing the mixture into the concentrated separation zone and concentrating and separating, returning the concentrate back to the anaerobic zone; discharging the supernatant from the concentrated separation zone and successively transporting through a high-efficient clarification tank, a filter tank and a disinfection tank to be purified; transporting the discharged excess sludge to a cyclone separation and recovery system; the separated compound powder carrier will be recycled to HPB biochemical tank. The HPB process in the present invention is a highly integrated municipal wastewater treatment process, in which only one lifting operation is required. In addition, it has a small land area, a low operating energy consumption and a high treatment efficiency.

The present invention discloses a small integrated greening device and method for recycling wastewater, including a wastewater collection system, a microorganism and plant purification system, and a reclaimed water collection and distribution system. The method includes the following process: greywater or wastewater is collected through a pipeline and enters a water collection tank of a wastewater collection part. Lifting is performed by submersible sewage pumps, such that the lifted water enters a microorganism and plant synergistic purification and greening part. Each submersible pump is controlled by one corresponding automatic water level controller to transport the treated water to the reclaimed water-use sites. The device and method provided by the present invention utilize the physical and chemical action of a filler and the synergistic purification effect of microorganisms and plants to purify the greywater, and the purified reclaimed water is used for flushing toilets, watering trees or other purposes.

A composition useful for removing energetic compounds from contaminated environments. The composition includes a supported reactant including an adsorbent with high affinity for energetic compounds. Further, the composition includes a first bioremediation material comprising at least one organism capable of degrading an energetic compound and a polymeric substance fueling the first bioremediation material during the degrading of the energetic compound. Additionally, the composition includes a second bioremediation material breaking the polymeric substance into smaller molecules over a degradation time period to provide the fueling of the first bioremediation material in a time-release manner.

The invention discloses a preparation method of a graphene aerogel metallic organic frame composite material loaded with microorganism as well as preparation method and application thereof in the treatment of azo dye. By using a hydrothermal method, a GA/MIL-100 graphene aerogel metallic organic frame composite material is successfully prepared, and in addition, the composite material disclosed by the invention has good adsorption and degradation effects on an azo dye. In addition, an adsorption method and a biological method are effectively combined, advantages of the two methods are taken into play, and a good application prospect can be achieved.

The present invention relates to a filtering apparatus (1) for the filtration of liquids, in particular water. It comprises, inside a container (11), a first chamber (50) intended to receive liquid to be filtered, a second chamber (54) intended to receive filtered liquid, a first porous wall (51) and a second porous wall (53) which delimit a filtration chamber (40) between them. The first porous wall (51) divides the first chamber (50) from the filtration chamber (40) and the second porous wall (53) divides the second chamber (54) from the filtration chamber (40), so that the filtration chamber (40) is interposed between the first chamber (50) and the second chamber (54). A granular filter material (4) is housed in the filtration chamber (40) and is enclosed between the first porous wall (51) and the second porous wall (53). The first chamber (50) receives the liquid to be filtered at a first height (H1) which is at a higher altitude than the second height (H2) at which the second chamber (54) discharges the filtered liquid. The first chamber (50), the filtration chamber (40) and the second chamber (54) are flanked to each other and, in a section between the first height (H1) and the second height (H2), are all intersected by a plurality of horizontal planes (P) parallel to each other. In use, the liquid to be filtered passes from the first chamber (50) to the second chamber (54) substantially by gravity and through the filtration chamber (40) with a flow path having a horizontal component.