CN204779234U - Modular biological filter - Google Patents

Abstract

The utility model relates to a modular biological filter, the filtering pond mainly by the denitrification pond of getting rid of and the bological aerated filter that are arranged in the pollution factors such as COD, ammonia nitrogen, be used for the sedimentation tank of getting rid of of sewage phosphorus and be used for into the water and the mud of bottom of the pool to carry out the water distribution device of intaking that water conservancy is mixed. The utility model discloses increased the volumetric loading of biological filter, made the biological filter get rid of efficiency and improve greatly, in addition, the operation in -process, under the strong water that obtains through the water distribution device of intaking, the effect of air current, biological intramembranous biological most the stop in bacterium, zoogloea, protist stage, some adhere to the type biology and aquatic organisms is difficult to grow in the filter material, because biomembrane thickness is thinner, can keep higher activity in addition, are favorable to polluting getting rid of of the factor to the aquatic. Biological filter traditional relatively, this biological filter can reach higher filtering velocity, under water conservancy dwell time 20-30min's the condition, can reach the satisfied effect of getting rid of.

Description

A kind of combined biological filter

Technical field

The utility model relates to a kind of biological filter, is specifically related to a kind of combined biological filter, belongs to field of environment engineering technology.

Background technology

Biological filter is the biological treatment structures be made up of rubble or plastics filler, and the microbial film gap-contact that sewage and filling surface grow, makes sewage be purified.The treatment effect of biological filter is good, and microorganism can rely on the organic matter in filler to grow, and need not add nutrition agent in addition, and adopt modular construction easily to transport, do not produce secondary pollution, energy consumption is low.But the filler of biological filter easily blocks, be therefore necessary that first carrying out pre-treatment to sewage when using biological filter removes a large amount of solid matter.

Utility model content

For the technical problem of above-mentioned existence, the purpose of this utility model is: propose the combined biological filter that a kind of cost is low, water treatment efficiency is good.

Technical solution of the present utility model is achieved in that a kind of combined biological filter, described filter tank primarily of the denitrification pond for removing pollution factor, for remove pollution factor BAF, for the settling tank of the removal of phosphor in sewage and to carry out the water inlet water dispensing apparatus that waterpower mixes with the mud at the bottom of pond for intaking; Described BAF is arranged between denitrification pond and settling tank; Described water inlet water dispensing apparatus is arranged in aeration and biological pond.

Improving further as the utility model, is Double-layer oblique tubular construction bottom described denitrification pond, comprising the lower floor's inclined tube for being separated with for bottom high-concentration activated sludge as the upper strata inclined tube of the solid-liquid separation being used for water outlet while biologic packing material.

Improve further as the utility model, settling tank has mixing zone, flocculation zone, separation and precipitation area, mud district and exhalant region.

Improve further as the utility model, described separation and precipitation area adopts tube settling.

Improve further as the utility model, in described denitrification pond, hang elastic filler.

Improve further as the utility model, fill suspended filter material in described BAF, filling ratio >=30%.

Due to the utilization of technique scheme, the utility model compared with prior art has following advantages:

Combined biological filter of the present utility model, increases the volumetric loading of biological filter, and biological filter removal efficiency is improved greatly; In addition, in operational process, under the strong water obtained by water inlet water dispensing apparatus, the effect of air-flow, biology in microbial film rests on bacterium, zoogloea, protobiont stage mostly, some attaching biologicals and hydrobiont are difficult to grow in filtrate, and due to biofilm thickness thinner, higher activity can be maintained, be conducive to the removal to pollution factor in water.Relatively traditional biological filter, this biological filter can reach higher filtering velocity, when hydraulic detention time 20 ~ 30min, can reach satisfied removal effect.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, technical solutions of the utility model are described further:

Accompanying drawing 1 is the structural representation of combined biological filter of the present utility model;

Wherein: 1, denitrification pond; 2, BAF; 3, efficient sedimentation tank; 4, water inlet water dispensing apparatus; 5, mixing zone; 6, flocculation zone; 7, separation and precipitation area; 8, mud district; 9, exhalant region.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described.

A kind of combined biological filter as shown in Figure 1, described filter tank is primarily of denitrification pond 1, BAF 2, efficient sedimentation tank 3 and to carry out the water inlet water dispensing apparatus 4 that waterpower mixes for intaking with the mud at the bottom of pond and form, wherein denitrification pond 1 and the combination of BAF 2 are mainly used in the removal of the pollution factor such as COD, ammonia nitrogen, efficient sedimentation tank is mainly used in the removal of phosphor in sewage, simultaneously as safeguards, guarantee the stably reaching standard of the indexs such as COD, SS of water outlet.

Denitrification pond 1 is a kind of static bed biomembrane of upward flow and the recombining process of active sludge, has splendid denitrification and COD removal function concurrently; Its core process adopts Double-layer oblique tube packing also to adopt two-stage tandem denitrification pool structure, and double-deck inclined tube not only provides the surface for biological adsorption, and plays the function that SS retains; Elastic filler is hung in denitrification pond.

Former water is by entering denitrification pond 1 bottom pond, the active sludge of high density at pond congregate, making to carry out waterpower into water and the mud at the bottom of pond mix by water inlet water dispensing apparatus, intaking by contacting with the active sludge of high density, play that SS retains simultaneously, the effect of denitrification and acidication.Bottom inclined tube, can keep the sludge concentration that bottom is higher, the inclined tube of modification simultaneously has larger specific surface area, it also grown a large amount of microorganisms, can play the effect of biological metabolism.Upper strata inclined tube, simultaneously as biologic packing material, also plays the effect of solid-liquid separation, the SS of denitrification pond water outlet can be made to reach the inflow requirement of follow-up equipment, extend the flushing cycle in follow-up filter tank.Retain SS because this pond has simultaneously, remove the function of COD, can produce a certain amount of excess sludge, mud is mainly through the perforated sludge discharge pipe row bottom pond.

Mud bottom water inlet water dispensing apparatus 4 pairs of ponds carries out suitable stirring, has both improved and has contacted with the effective of mud into water, the activity of the mud improved again.

BAF 2 is a kind of submerged up-flow biological filters, have that floor space is little, treatment effect good, flow process is simple, back flushing water consumption air consumption is little, filler is durable in use, effectively prevent former water slug, operational management is convenient, civil engineering and the series of advantages such as working cost is low.Its filtrate is suspension fine particle, and BAF can adopt concrete form or steel systeming equipment form, due to filtrate light specific gravity, is suspended in water, this filtrate filling ratio >=30%.

Efficient sedimentation tank 3, as the rear road processing unit of this technique, plays chemical dephosphorization simultaneously, removes COD, ammonia nitrogen, SS, ensures the keying action that stable water outlet is up to standard.This pond mainly contains five part compositions: be specially mixing zone 5, flocculation zone 6, separation and precipitation area 7, mud district 8 and exhalant region 9.Operation scheme is: former water adds after coagulating agent fully mixes in mixing zone 5, after the exit of mixing pit adds PAM coagulant aids, send into flocculation zone carry out mechanical lifting stirring flocculation reaction, water after machinery flocculation enters waterpower flocculation zone 6 continuation generation flocculation reaction through turning over mill weir, and from top to bottom smooth in water flow enter settling region 7, final mud-water separation is carried out in settling region 7, clear water zone, inclined tube top arranges water leg and to conflux water outlet, mud then concentrates in bottom, settling region 7, mud-removing bucket is established in bottom, and after concentrated, high concentration sludge discharges.

By mixing zone 5, flocculation zone 6 and settling tank from, and change rectangular configuration into, to simplify pond type, adopt machinery flocculation and waterpower to flocculate simultaneously and combine, thus add the adaptation use to influent quality and the water yield, enhance treatment effect; Sediment fraction arranges inclined tube, improves surface load further, thus greatly reduces the floor space of structures, and settling tank floor space is 1/3 ~ 1/5 of conventional settling tank, is set up simultaneously and adopts square, save occupation of land further at cloth.

Last it is noted that above embodiment only in order to illustrate the utility model and and technical scheme described by unrestricted the utility model, therefore, although this specification sheets has been described in detail the utility model with reference to each above-mentioned embodiment, but, those of ordinary skill in the art is to be understood that, still can modify to the utility model or equivalent replacement, and all do not depart from technical scheme and the improvement thereof of spirit and scope of the present utility model, it all should be encompassed in right of the present utility model.

Claims (6)

1. a combined biological filter, is characterized in that: described filter tank by the denitrification pond for removing pollution factor, for remove pollution factor BAF, for the settling tank of the removal of phosphor in sewage and to carry out the water inlet water dispensing apparatus that waterpower mixes for intaking with the mud at the bottom of pond and form; Described BAF is arranged between denitrification pond and settling tank; Described water inlet water dispensing apparatus is arranged in aeration and biological pond.

2. combined biological filter according to claim 1, it is characterized in that: be Double-layer oblique tubular construction bottom described denitrification pond, comprising the lower floor's inclined tube for being separated with for bottom high-concentration activated sludge as the upper strata inclined tube of the solid-liquid separation being used for water outlet while biologic packing material.

3. combined biological filter according to claim 1, is characterized in that: settling tank has mixing zone, flocculation zone, separation and precipitation area, mud district and exhalant region.

4. combined biological filter according to claim 3, is characterized in that: described separation and precipitation area adopts tube settling.

5. combined biological filter according to claim 2, is characterized in that: hang elastic filler in described denitrification pond.

6. combined biological filter according to claim 2, is characterized in that: fill suspended filter material in described BAF, filling ratio >=30%.