CN-121974490-A - Modularized construction method of AAO sewage treatment tank water ecological biomembrane reactor

CN121974490ACN 121974490 ACN121974490 ACN 121974490ACN-121974490-A

Abstract

The invention relates to the technical field of sewage treatment, and discloses a modularized construction method of an AAO sewage treatment tank water ecological biomembrane reactor; the method is used for solving the problems of lack of quick checking, positioning and module level deviation correction for partition hydraulic equivalent and boundary integrity in the traditional method, and comprises the steps of firstly establishing a module ledger, an interface list, freezing boundary caliber, a slice elevation, backflow setting and measuring point mapping, positioning and assembling a datum line, aligning and retesting the hierarchical pretension and the diversion slice to form a base line, judging interface leakage and structure gesture through hierarchical water filling and steady pressure maintaining, writing back treatment records, presetting disturbance acquisition measuring point response data, mapping and positioning boundary numbers and interface numbers according to abnormal criteria, then executing single control point reversible deviation correction and retesting according to the numbers, updating a ledger and retesting plan, and ensuring that the partition boundary is controllable and water outlet is stable and reaches the standard.

Inventors

FENG ZIWEN
YU YANGMING
Shi Chengbang
JIN YINGWEI
LI JIN
WANG XIAOWEI
ZHANG ZHONGHE
ZHOU LUBIN
QIU PENG
TAI HANGDI

Assignees

河南沃克曼建设工程有限公司

Dates

Publication Date: 20260505
Application Date: 20260202

Claims (10)

The modularized construction method of the AAO sewage treatment pool water ecological biological membrane reactor is characterized by comprising the following steps: S1, establishing a module standing book and interface list, and determining a partition boundary caliber, an overflow weir crest elevation, a reflux setting, a measuring point arrangement and a checking time window; S2, assembling all modules in position according to a datum line, sequentially closing interfaces, pre-tightening in a grading manner, completing a partition wall flow guiding and overflowing weir crest pair Ji Fuce, and writing in an initial valve position and an adjustable component position; S3, filling water in stages according to a preset water level, maintaining pressure in a steady state, checking the sealing state and the structural posture of the interface, and updating the state record of the interface; S4, carrying out regional hydraulic equivalence and boundary integrity check under a preset disturbance condition, collecting measurement point response data and determining a boundary number and an interface number according to an abnormal criterion; And S5, performing module-level reversible deviation correction according to the number, and adjusting the overcurrent limiting, the flow guiding component, the weir crest component, the backflow inlet component and the air supply distribution component to finish checking and update the standing account and the checking plan.
2. The method for modular construction of an AAO wastewater treatment basin water ecological biofilm reactor of claim 1, wherein establishing a module ledger and interface list, determining a partition boundary caliber, an overflow weir elevation, a reflux setting, a measuring point arrangement and a checking time window, comprises: Receiving engineering delivery data packets, and establishing a module numbering rule with version and numbering mapping and an interface numbering rule with an interface direction code; Establishing a module standing book and interface list, associating boundary caliber and a list, and determining partition boundary caliber, overflow weir crest elevation, reflux setting, measuring point arrangement and checking time window; And generating a state machine check task list with admission gating and treatment write-back, and forming a ledger baseline package.
3. The modular construction method of the AAO sewage treatment tank water ecological biofilm reactor according to claim 1, wherein the assembly of each module in place according to the datum line comprises the following steps: When each module is assembled according to the datum line in place, checking the closed record of the elevation datum line of the pool bottom, the axis datum line of the pool body and the zone boundary datum line; Each module is provided with at least two positioning control points, and the positioning posture is adjusted through the supporting gaskets, so that in-place retesting is completed; When the in-place retest exceeds the allowable deviation of the interface list or the boundary caliber from the list table, relocation treatment or quarantine treatment is performed, and a treatment number is registered in the ledger.
4. The modular construction method of an AAO wastewater treatment pond water ecological biofilm reactor according to claim 1, wherein sequentially closing the interfaces and pre-tightening in a grading manner, completing a pair Ji Fuce of baffle wall diversion and overflow weirs, writing in an initial valve position and an adjustable member position, and comprising: when the interfaces are sequentially closed and pre-tightened in a grading manner, checking the cleaning state of the sealing material batch and the interfaces, pre-tightening in a progressive manner according to a preset loading level, re-measuring the error table and the elevation difference after pre-tightening in each level, and writing back records; And (3) finishing a pair Ji Fuce of baffle diversion and overflow weir, executing correction according to a systematic deviation judgment rule, and recording the opening of the valve and the initial position of the adjustable component.
5. The modular construction method of an AAO wastewater treatment pond water ecological biofilm reactor according to claim 1, wherein the steps of filling water in stages according to a preset water level and maintaining pressure in a steady state comprise: when water is filled in stages according to a preset water level and the pressure is maintained in a steady state, generating a wet task sheet based on a checking task sheet, and setting a water level, a target water level proportion, an upper limit of water filling rate, an allowable fluctuation band, a steady state window and a recording frequency; The steady state determination rule is set so that the water level variation amounts of consecutive plural recordings all fall into the allowable fluctuation band, and the water level variation amounts of adjacent recordings are not increased.
6. The modular construction method of an AAO wastewater treatment pond water ecological biofilm reactor according to claim 1, wherein checking the sealing state and the structural posture of the interface, updating the interface state record, comprises: when the sealing state and the structure posture of the interface are checked and the record of the state of the interface is updated, the length of the observation point and the observation window is determined according to the serial number of the interface, and leakage classification is carried out; when the leakage grade is drip leakage, performing supplementary pre-tightening and retesting; when the leakage level is a linear flow, carrying out local dismantling inspection on the leakage interface and the adjacent interfaces and carrying out steady-state pressure maintaining again at the corresponding water level; And re-measuring the gesture according to the module datum point, returning to the upper level when the gesture index exceeds the limit, and writing leakage classification, treatment action and emergency drainage triggering information into an interface state table.
7. The modular construction method of an AAO wastewater treatment pond water ecological biofilm reactor according to claim 1, wherein the performing of zone hydraulic equivalence and boundary integrity check under preset disturbance conditions comprises: when partition hydraulic equivalence and boundary integrity check are executed under the preset disturbance condition, carrying out version association on a check task list and a wet pressure maintaining qualified package and a measuring point arrangement table; selecting flow pulse disturbance, water level micro disturbance or reflux disturbance in a task list and fixing an execution sequence; and setting a pre-check item and an interrupt condition in the task list, and writing the nominal residence time and the value caliber of the nominal flow.
8. The modular construction method of the AAO sewage treatment pool water ecological biofilm reactor according to claim 1, wherein the steps of collecting measurement point response data and determining boundary numbers and interface numbers according to abnormal criteria comprise: when collecting measuring point response data and determining boundary numbers and interface numbers according to abnormal criteria, setting a base line window and a sampling window; Judging abnormal entries in advance, behind, dispersedly and permeated according to the main change caliber and the trail caliber; generating and arranging an interface candidate set according to the mapping from the measuring point to the boundary and the mapping from the boundary to the interface; and writing back the abnormal type code and the confirmation mark in the interface list and the boundary list.
9. The modular construction method of an AAO wastewater treatment pond water ecological biofilm reactor according to claim 1, wherein performing module level reversible deviation rectification according to number comprises: When the module level reversible deviation correction is executed according to the number, a deviation correction task list is generated based on the confirmed boundary number and the interface number; each correction is adjusted only once for one control point and a corresponding rechecking task is generated; when the target item is in a state to be rechecked or the control point lacks a reset method field, blocking the deviation correction of the item; and performing state write-back on the deviation rectifying record and the rechecking record according to the state machine.
10. The method for modular construction of an AAO wastewater treatment basin water ecological biofilm reactor according to claim 1, wherein adjusting the overcurrent limiting, flow guiding member, weir crest member, reflux inlet member and air supply distribution member, completing rechecking and updating the standing account and rechecking plan, comprises: when the overflow limiting component, the flow guiding component, the weir crest component, the backflow inlet component and the air supply distributing component are regulated, the regulating quantity is limited by the component allowable range, the alignment allowable band and the valve position reference band; rechecking the task list parameters triggering the abnormality; when the check passes, the position of the component is written into a locking mark, and the ledger and the check plan are synchronously updated.

Description

Modularized construction method of AAO sewage treatment tank water ecological biomembrane reactor Technical Field The invention relates to the technical field of sewage treatment, in particular to a modularized construction method of an AAO sewage treatment tank water ecological biomembrane reactor. Background The AAO anaerobic anoxic aerobic process is widely used in town sewage treatment engineering because of the biological denitrification and dephosphorization capability; in order to shorten the construction period and adapt to the reconstruction and expansion requirements, the industry gradually adopts an assembly type or modularized assembly type to construct an AAO tank body and stacks a biological membrane reactor unit, such as an MBBR suspension carrier and an IFAS mud membrane composite or fixed filler membrane hanging unit, so as to improve the nitrification and denitrification stability and the shock resistance under the condition of limited tank capacity, for example, the published invention patent application CN114604965B discloses an AOA and AAO dual-mode sewage biochemical system based on MBBR and an operation method, which mainly realizes denitrification treatment through the arrangement of reaction sections and the switching of operation modes, and the published invention patent application CN105439281B discloses a moving bed biological membrane reaction device, which mainly improves the reaction effect through the configuration of a diversion component and an aeration structure in a shell; However, the prior art is mainly aimed at the internal structure of a process section or a single biomembrane reactor, and is difficult to solve the engineering key contradiction problem of modularized assembly application, assembly tolerance is accumulated and overlapped continuously at module connection parts such as a tank module interface, a partition wall flow guiding component, a flow passing port, a weir port and the like, a sealing structure is different from construction conditions, short-flow, series flow, backflow short-circuit, local dead angle and the like between an anaerobic zone, an anoxic zone and an aerobic zone are easy to generate after the operation, effective retention time, backflow ratio and dissolved oxygen diffusion boundary of a partition deviate from design working conditions, denitrification and dephosphorization effects are unpredictable and phase failure occurs under load fluctuation and start-stop conditions, meanwhile, the prior art lacks rapid check and positioning of partition hydraulic equivalent and boundary integrity facing a modularized delivery scene, the problem cannot reach modules and specific interfaces, the problem of repairing needs to stop pool detection and rework, so that construction period delay and operation maintenance cost are greatly improved, and the prior art is necessary to put forward rapid check positioning and module level correction technology suitable for modularized construction and initial stage operation to realize controllable and standard-reaching and stable water outlet boundary verification of the partition. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a modularized construction method of an AAO sewage treatment tank water ecological biomembrane reactor, which solves the problems of lack of rapid checking, positioning and module level deviation correction for partition hydraulic equivalent and boundary integrity in the traditional method. In order to achieve the above purpose, the present invention provides the following technical solutions: The modularized construction method of the AAO sewage treatment pool water ecological biomembrane reactor comprises the following steps: S1, establishing a module standing book and interface list, and determining a partition boundary caliber, an overflow weir crest elevation, a reflux setting, a measuring point arrangement and a checking time window; S2, assembling all modules in position according to a datum line, sequentially closing interfaces, pre-tightening in a grading manner, completing a partition wall flow guiding and overflowing weir crest pair Ji Fuce, and writing in an initial valve position and an adjustable component position; S3, filling water in stages according to a preset water level, maintaining pressure in a steady state, checking the sealing state and the structural posture of the interface, and updating the state record of the interface; S4, carrying out regional hydraulic equivalence and boundary integrity check under a preset disturbance condition, collecting measurement point response data and determining a boundary number and an interface number according to an abnormal criterion; And S5, performing module-level reversible deviation correction according to the number, and adjusting the overcurrent limiting, the flow guiding component, the weir crest component, the backflow inlet component and the air supply distribution component