Compound humic packing biological filter system, combined-technology wastewater treatment system and wastewater treatment method

A humic filler and biofilter technology, applied in aerobic and anaerobic process treatment, filtration treatment, adsorption water/sewage treatment, etc., can solve the problem of slow rise of TP concentration in effluent, low TN removal rate, and suspension in influent Sensitivity to the concentration of substances and other issues, to reduce the risk of bio-blocking

Pending Publication Date: 2019-01-18
NANJING CROSS ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For the invention patent of the existing humic filler filter technology (patent number: 200610166396.2), when the fixed bed form is used, it is sensitive to the concentration of suspended solids in the influent and there is a risk of biological clogging, and the concentration of TP in the effluent increases slowly, and the removal rate of TN is low; Invention patent (patent number: 201310182421.6) adopts fluidized filter bed technology to solve the problem of biological clogging, but requires regular backwashing, peat renewal and other operations, which has the problems of complicated process and high operating costs

Method used

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  • Compound humic packing biological filter system, combined-technology wastewater treatment system and wastewater treatment method
  • Compound humic packing biological filter system, combined-technology wastewater treatment system and wastewater treatment method
  • Compound humic packing biological filter system, combined-technology wastewater treatment system and wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] The following is an illustration based on a specific case. The discharge of domestic sewage in a natural village is 10m 3 / d, the water quality of sewage influent is shown in Table 1:

[0075] Table 1 A natural village domestic sewage water quality data

[0076]

[0077] combine figure 1 , a method for treating degradable organic wastewater such as domestic sewage in this embodiment, the sewage passes through the grid well 10 to remove larger-scale suspended matter and enters the baffle acidification adjustment tank 20 for pretreatment, and the macromolecular organic matter is hydrolyzed into small molecular organic matter , the water from the sewage lifting pump 202 goes through the self-cleaning filter 203 to remove fine suspended matter and then enters the top water distribution unit of the composite humic filler biofilter 30 . The grid well 10 is 1m long and 0.7m wide, and the depth is determined by adding 1m to the buried depth of the end of the sewage collect...

Embodiment 2

[0082] The daily discharge of domestic sewage in natural village B is 50m 3 / d, the water quality of sewage influent is shown in Table 2:

[0083] Table 2 Water quality data of domestic sewage in Natural Village B

[0084]

[0085] A kind of composite humic filler biofilter system of this embodiment, its structure is basically the same as that of embodiment 1, the difference is: the composite humic filler biofilter 30 is a flexible pool constructed by semi-underground composite geomembrane enclosure body, the length of the above-ground part is 12m, and the width is 12m. According to the surface load of the composite humic filler biofilter 30, the water inlet surface load is controlled to 0.75m 3 / (m 2 d), and calculate the bottom area according to the surface load of the water inlet, that is, the effective area is 75m 2 , the actual bottom length is 9m, and the width is 9m. The baffle acidification adjustment pool 20 adopts the baffle form of a circular rotating flow ch...

Embodiment 3

[0088] The daily flow of domestic sewage in natural village C is 100m 3 / d, the quality of sewage influent is shown in Table 3:

[0089] Table 3 Water quality of domestic sewage in natural village C

[0090]

[0091] A combined process wastewater treatment system in this embodiment is basically the same in structure as in Embodiment 1, except that the composite humic filler biofilter 30 adopts a semi-subterranean composite geomembrane enclosure to construct a flexible pool body. Partial length is 14m, width is 14m, according to the composite humic filler biofilter 30 influent surface load control is 0.75m 3 / (m 2 d), and calculate the bottom area according to the surface load of the water inlet, that is, the effective area is 150m 2 , the actual base length is 12.5m, and the width is 12.5m. Due to the large amount of treated water, the baffled acidification adjustment tank 20 adopts a corridor-type baffled square pool body, and the required effective volume is 12.5m 3 ...

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Abstract

The invention discloses a compound humic packing biological filter system, a combined-technology wastewater treatment system and a wastewater treatment method and belongs to the technical field of environmental engineering water treatment. The compound humic packing biological filter system is formed by vertical current wetland and a compound humic packing biological filter which are vertically overlapped. The combined-technology wastewater treatment system is formed by a grating well, a baffling acidification adjustment tank, the compound humic packing biological filter, a middle tank and thevertical current wetland which are sequentially connected. The wastewater treatment method comprises the steps: sewage passing through the grating well enters the baffling acidification adjustment tank to be pretreated, most pollutants are degraded by the biological filter, and bottom-layer effluent enters the middle tank; effluent of the middle tank partially flows back to the acidification adjustment tank to achieve nitrogen removal by reinforce denitrification, the rest of the effluent of the middle tank enters the vertical current wetland to be matched with surface-layer adsorbing dephosphorization packing to reinforce dephosphorization, and final effluent can reach the standard and is drained. The compound humic packing biological filter system disclosed by the invention overcomes the defect that an existing biological trickling filter technology is prone to be plugged, achieves automatic control and unattended operation and has convenience in later maintenance management.

Description

technical field [0001] The invention relates to the technical field of environmental engineering water treatment, and more specifically relates to a composite humic filler biofilter system, a combined process wastewater treatment system and a method for treating wastewater. Background technique [0002] Biofilter technology has been used in the biological treatment of urban domestic sewage and industrial degradable organic wastewater for nearly a hundred years. It is a bioreactor for trickling non-submerged biofilm attachment growth. In the early days, gravel or other similar inert coarse aggregates were used as the carrier of the biofilm, and the wastewater was continuously and evenly distributed on it, and the pollutants were adsorbed as the sewage flowed through the biofilm attached to the filler, and were further absorbed by microorganisms. degradation. The air flows in the pores of the coarse aggregate by means of natural ventilation, providing oxygen for aerobic micro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/28C02F1/001C02F2101/30C02F3/30
Inventor 吴军朱俊伟金玲郭贤发陈东标杨智力肖升薛王峰李智罗志峰郭军
Owner NANJING CROSS ENVIRONMENTAL TECH CO LTD
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