A preparation method of biological filler and a sewage treatment method
A biological filler and filling technology, applied in the field of water treatment, can solve the problems of poor dephosphorization and denitrification, affecting the quality of effluent, affecting treatment effects, etc. good effect
Active Publication Date: 2022-04-12
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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Problems solved by technology
[0003] In the prior art, the processes that can realize simultaneous denitrification and phosphorus removal mainly include the Bardenpho (Bardenpho) denitrification and phosphorus removal process and the A 2 / O synchronous denitrification and dephosphorization process, the former has complex process, many reactors, cumbersome operation and high cost, so it is seldom used; the latter has been widely used and recognized by the market because of its relatively simple process and no sludge bulking. , the relevant packing equipment has been developed to a certain level, but there are still some unsatisfactory places, such as light packing may lead to the loss of packing flow under the impact of water flow, and thus greatly affect the treatment effect; the effect of phosphorus and nitrogen removal is not good , thereby affecting the water quality of the effluent
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[0046] Such as figure 1 Shown, be the structure schematic diagram of efficient film-hanging sewage / wastewater biological treatment (Bapike, Bio-Pack) filler, described device is by the powdery coal gangue after the modification, the powdery steel slag after the treatment of described device The three-dimensional shell without a cover made of the main raw materials and the packing inside are mainly composed of the upper groove 1 of the cubic shell without a cover, the protrusion 2 of the lower end of the shell, the mesh 3 and the inner packing 4, and the connection relationship of each part is as follows:
[0047] The vertical shell is integrated (including the upper groove 1 and the lower protrusion 2), and the overall mesh 3 of the shell is of the same size;
[0048] The vertical shell is stacked with a mortise joint structure through the upper groove 1 and the lower protrusion 2 to increase the stability of multiple connections;
[0049] The internal filler is filled with c...
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The invention discloses a method for preparing a biological filler and a method for treating sewage. The filler comprises a cube-shaped shell with grids and no cover on the upper surface, and the shell is filled with filler. The shell adopts the technology of "microporous foaming grouting". The calcined and modified powdered coal gangue and the processed powdered steel slag are mixed to make raw meal, and then put into the cement kiln to be calcined to make clinker, and after rapid cooling , mixed with waste paper slurry containing lithium-based curing agent, a small amount of fiber and resin, poured into the prepared cubic shell mold, cooled and shaped, and the filler is calcined modified and crushed coal gangue. The upper end surface of the casing is provided with grooves, and the lower end surface is provided with protrusions, and the upper and lower adjacent biological fillers are formed by tenoning up and down through the grooves and protrusions. The filler has a high specific surface area, good film-hanging effect, high phosphorus and nitrogen removal efficiency, convenient construction, and low cost. It can alleviate the difficult utilization of coal gangue and steel slag to a certain extent, and can effectively remove pollutants pollutants.
Description
technical field [0001] The invention relates to a water treatment technology, in particular to a preparation method of biological packing (Bio-Packing) and a sewage treatment method. Background technique [0002] With the improvement of people's living standards and increasingly stringent environmental protection standards, traditional treatment processes such as contact oxidation and activated sludge can no longer meet the requirements, especially the requirements for nitrogen and phosphorus removal. However, in the current process, A / O, SBR, and Phostrip processes cannot achieve simultaneous nitrogen and phosphorus removal. In order to deal with the shortage of water resources and pollution problems, facing the serious eutrophication status of "three rivers and three lakes" and other water bodies, sewage and waste water should be properly treated and reused. In this process, relevant processes and equipment should be paid attention to. Biological treatment is widely favor...
Claims
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IPC IPC(8): C02F3/00C04B7/24C04B7/44
CPCC02F3/00C04B7/24C04B7/44C02F2003/001Y02P40/10
Inventor 桑义敏鲁涛涛滕志远戴铁诚
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY