CN113011662A

CN113011662A - System and method for integrated combined optimized scheduling of network and river of regional enterprise plant

Info

Publication number: CN113011662A
Application number: CN202110317690.3A
Authority: CN
Inventors: 李轶; 万芬芬; 张文龙; 王玉明; 惠辞章; 童家歆
Original assignee: Hohai University HHU
Current assignee: Hohai University HHU
Priority date: 2021-03-25
Filing date: 2021-03-25
Publication date: 2021-06-22
Anticipated expiration: 2041-03-25
Also published as: CN113011662B

Abstract

The invention relates to a system and a method for integrated combined optimized dispatching of regional enterprise, network and river, wherein the system comprises a water resource optimized configuration and distribution system, a drainage system for enterprises and a network and river system; the method comprises the steps of establishing a regional water resource optimal configuration model according to the current situation of regional water resources; and dispatching regional water resources according to the regional water resource optimization configuration result. The invention jointly manages wading factors such as a water supply system, an enterprise, a drainage system, a sewage treatment system, a river and lake water system and the like in the regional water circulation process, realizes linkage and mutual coordination of all links, forms a regional water affair management mode for uniformly managing the wading factors, and effectively and efficiently solves the water problems such as regional water resource supply and demand imbalance, water quality deterioration and the like.

Description

System and method for integrated combined optimized scheduling of network and river of regional enterprise plant

Technical Field

The invention relates to a system and a method for integrated combined optimized dispatching of network and river of a regional enterprise plant, belonging to the technical field of water network management and control.

Background

Water is the source of life, the base of production, and the ecological importance. However, the water resource in China is seriously short and the space-time distribution is extremely uneven, and the fresh water resource in the north accounts for only one fifth of the fresh water resource in the whole country. In south China, water quality deterioration is the root cause of water resource difficulty in utilization. With the improvement of social and economic levels, the phenomenon of imbalance of supply and demand of water resources in China becomes increasingly serious, and the problem of water environment deterioration and the like is also related to the realization of the social development goal in China.

At present, the management of various wading elements in a region of China is a fragmentation mode, and the management comprises the division of affairs such as the construction, operation and management of various wading elements in the region into a plurality of departments such as residential construction, water affairs, environmental protection and the like; the information traffic of the interrelated wading elements is not smooth; the regulation and control of wading elements are independent. The existing management mode splits all components of supply-demand-discharge in the regional water circulation process, so that regional wading elements cannot run coordinately, and the water problems of water resources, water environment, water safety and the like cannot be effectively and efficiently solved.

Therefore, the invention provides a system and a method for integrated combined optimized dispatching of network and river in regional enterprises and plants, which coordinate water-involving elements such as water using units, water supply systems, drainage systems, sewage treatment systems, river and lake systems and the like in a region and realize the unified construction and management of water resources, water environments, water safety, water ecology and water landscape in the region.

Disclosure of Invention

In order to solve the technical problems, the invention provides a system and a method for integrated combined optimized scheduling of network and river of a regional enterprise plant, wherein the specific technical scheme is as follows:

a regional enterprise, network and river integrated combined optimization scheduling system comprises a water resource optimization configuration and distribution system, an enterprise drainage system and a plant network and river system, wherein the water resource optimization configuration and distribution system and the enterprise drainage system are connected through a tap water supply network system and a reclaimed water supply network system; the drainage system for the enterprise and the plant network river system are connected with a sewage pipe network system and corresponding pipelines through a sewage treatment station in the enterprise;

the water resource optimal allocation and distribution system comprises a tap water plant, a regeneration water plant, a tap water supply network, a regeneration water supply network and a water transfer project; the method comprises the following steps of (1) calling in the corresponding amount of the outside water through an outside water regulation project, treating and disinfecting the outside water and the local water with the corresponding amount of water into tap water through a tap water plant, and treating the effluent of the artificial wetland by the regenerated water plant to obtain the regenerated water with the corresponding water quality and amount; the treated tap water and the treated regenerated water are respectively supplied to a water user through a tap water supply pipe network and a regenerated water supply pipe network;

the enterprise drainage system comprises an enterprise production process link, an in-situ treatment and reuse device in the production link, an enterprise non-production water link and an enterprise sewage treatment station; distributing water supplied by a tap water supply pipe and a reclaimed water supply pipe network to a corresponding production link and a non-production water link, performing short-flow recycling and enterprise recycling on waste water generated after a water consumption link according to the water quality and the water quality requirement of the water consumption link according to the water distribution network, treating the waste water which is generated after utilization and cannot be recycled in a sewage treatment station, and discharging the treated waste water into a drain pipe network system if the water quality reaches a nano-pipe water quality standard, or returning the treated waste water to the sewage treatment station for retreatment;

the plant network and river system comprises a drainage pipe network system, a sewage treatment plant, an artificial wetland, a river and lake water system and a gate dam; sewage discharged by a user enters a sewage pipe network system, plant network joint regulation is carried out through a pump station in the water discharge pipe network system, the sewage in the pipe network is regulated and controlled to be transported to a sewage plant, tail water is formed after the sewage plant is treated, all the tail water enters the artificial wetland for deep purification, the purified water is used as an ecological water replenishing water source or a reclaimed water source, and is discharged into rivers and lakes through a water replenishing pipeline to be used as ecological water replenishing or is purified to specified water quality and then enters a reclaimed water plant for treatment;

rainwater in the plant network river system enters a split-flow rainwater pipeline, flows to a regulation and storage tank through the rainwater pipeline, enters the regulation and storage tank for storage if rainwater quality meets the water quality of the river, and otherwise enters a treatment device for treatment and then enters the regulation and storage tank for storage after reaching the specified water quality.

A method for integrated combined optimized scheduling of network and river of a regional enterprise plant comprises the following steps:

step 1, establishing a regional water resource optimal configuration model according to the current situation of regional water resources;

step 2: and dispatching regional water resources according to the regional water resource optimization configuration result.

Further, the specific process of step 1 is as follows:

step 1.1: constructing a regional water network: drawing a flow route of water in the area and marking the water quantity and the water quality on the route according to the daily water consumption of the area, the daily water consumption and the water quality requirement of a user, the fresh water and sewage quantity and the water quality of the enterprise and the historical data of the water inlet and outlet quality and the water quality of the sewage plant, so as to form a current water network of the area;

step 1.2: increasing feasible water flow routes, optimizing the current regional water network:

1.21 adding water-involved elements including artificial wetland units, regenerated water plant units and regulation and storage pool units in a rainwater pipe network based on a regional current water network diagram, and adding a water flow path including effluent of a sewage plant flowing to municipal water and the artificial wetland, effluent of the artificial wetland flowing to the regenerated water plant and a river, and effluent of the rainwater regulation and storage pool draining to the river;

1.22 increasing routes for recycling the wastewater between the multi-purpose water links and the wastewater treatment recycling equipment in each enterprise based on the water demand and the water quality requirements of the water links in each enterprise and the treatment capacity of the wastewater treatment recycling equipment, and if the water quality of the wastewater discharged from one link meets the water quality requirement of the other link, enabling the discharged wastewater to enter the link, namely increasing the water flow route between the two links, otherwise not increasing the water flow route;

1.23 increase the water flow route of the water plant for supplying enterprise users based on the water demand and water quality requirements of each enterprise, the water amount entering the water plant and the water quality of the reclaimed water: if the quality of the reclaimed water meets the water quality requirement of an enterprise, increasing a water flow route supplied by a reclaimed water plant to the enterprise, otherwise, not increasing the flow route;

step 1.3: establishing and solving a regional multi-level water resource optimization model: and forming a multi-level water resource optimal configuration model of the whole region based on the optimized regional water network, solving the optimal configuration model by utilizing a genetic algorithm, and solving the water quantity and the water quality of each water flow path, namely obtaining a water resource optimal configuration scheme.

Further, the regional water resource optimization configuration model is composed of an objective function and constraint conditions, and the specific contents are as follows:

(1) objective function

1.1) the minimum amount of fresh water, i.e. the minimum amount of water taken from the river, lake and water systems by regional production life:

in the formula, F_iThe fresh water consumption of each water user is t/d;

1.2) the sewage treatment cost of the system is minimum, namely the sum of the fresh water treatment cost, the cost of generating reclaimed water by a reclaimed water plant, the in-situ treatment and reuse cost in an enterprise, the sewage treatment cost of a sewage plant and the sewage treatment cost of artificial wetland is minimum:

wherein, alpha is the proportion of local water in fresh water, Rp_lThe quantity (t/d), Rf, of the water used by individual consumers for the regeneration water from the regeneration water network_1,lThe water consumption (t/d), Rf, of the reclaimed water from the in-situ treatment and reuse for each enterprise user_2,lThe water consumption (t/d) of the reclaimed water treated by the sewage station for each enterprise user, Si (t/d) of the sewage treated by the park sewage plant, Ci (t/d) of the artificial wetland, Ra (t/d) of the rainwater regulation and storage tank, e_α、e_1-α、e_Rp、e_Rf1,l、e_Rf2,l、e_Si、e_Ci、e_RaThe cost (yuan/t) of water treatment per ton of local water, external water, reclaimed water, in-situ treatment in an enterprise, treatment of a sewage station in the enterprise, a sewage plant, an artificial wetland and a rainwater storage tank is respectively;

1.3) maximum water quality lifting amplitude of river

f₃＝min(c_Ri,1-c_Ri,0)

In the formula: c. C_Ri,1The water quality (mg/L) of the river after taking measures c_Ri,0The river water quality (mg/L) before taking measures is adopted;

(2) constraint conditions

2.1) water balance: the water inlet quantity of each wading unit is equal to the water outlet quantity plus the water consumption quantity, and the loss rate is recorded as beta_i

(1-β_l)(F_l+Rp_l+Rf_1,l+Rf_2,l)＝E_1,l+E_2,l

In the formula, beta_lTo a loss rate, E_1,lThe water quantity (t/d) discharged to the in-situ treatment and recycling link for the enterprise water consumption link, E_2,lThe water quantity (t/d) discharged to a sewage treatment station in the enterprise water consumption link;

2.2) supply and demand balance: the water consumption of the water consumers before and after the optimal configuration is equal

Industrial water:

F_l+Rp_l+Rf_1,l+Rf_2,l＝F_i,0

domestic water:

F₁＝F_1,0

municipal water:

So₁≥M

in the formula, F_l,0The fresh water consumption (t/d) and F of each enterprise user before configuration are optimized₁And F_1,0Respectively the domestic water consumption (t/d) before and after the preparation, So₁The quantity (t/d) of municipal water supplied by a sewage treatment plant after optimal configuration, wherein M is the quantity (t/d) of the municipal water;

2.3) the ecological water supplement quantity needs to meet the requirements of river ecological base flow and flood control safety

W_R,N≤Co₂+Ra≤W_R,F

In the formula, Co₂The amount of water (t/d) discharged from the constructed wetland into the river. W_R,NThe minimum water demand (t/d), W of the river is calculated by utilizing a river hydraulic water quality model according to the ecological base flow of the river_R,FThe calculated maximum water demand (t/d) of the river;

2.4) water resource available water supply limitation:

in the formula, W_oFor maximum water supply (t/d) of water transfer works, W_lAnd supplying water (t/d) for local water resources.

Further, the step 2 specifically comprises:

step 2.1: regulating and controlling water transporting and distributing system

2.1.1 establishing a tap water pipe network hydraulic model

2.1.11 establishing a water supply network hydraulic model: the method comprises the steps of establishing a water supply network hydraulic model by using EPANET software, inputting historical water consumption data of regional users and basic attribute data of a water supply system, wherein the historical water consumption data comprises pipeline distribution, pipe diameter, pipeline design pressure and water supply pump station parameters, and operating the model to realize the simulation of a regional tap water network.

2.1.12 parameter checking: historical water supply data are input, a simulated water pressure result is obtained by utilizing calculation of a hydraulic model, the simulated water pressure result is compared with water pressure monitoring data, and the roughness parameter value of the pipeline is continuously adjusted until the water pressure simulation result is close to actual monitoring data.

2.1.13 model verification: inputting historical data of water consumption of users in different groups of regions for many times, operating the model to obtain a simulated water pressure result, if the deviation of the simulated result and the actual monitoring data is less than 20%, the model is feasible, otherwise, returning to the step 2.1.12.

2.1.2 establishing a hydraulic model of a reclaimed water pipe network

2.1.21, drawing a flow path of the regenerated water provided by the regenerated water plant according to the optimized regional water network model obtained in the step 1.2, and drawing the distribution of a regenerated water pipe network according to the existing tap water pipe network distribution;

2.1.22 establishing a regenerated water pipe network hydraulic model according to the establishing process of the tap water pipe network hydraulic model;

2.1.3, inputting the water consumption of each user in the water resource optimization configuration scheme obtained in the step 1.3 into a model as the water consumption of the user in the simulation calculation, and adjusting the water outlet flow of a water supply pump station until the water demand of each user in the model is met, wherein the water outlet flow of the water supply pump station is the scheduling scheme of the water supply network;

step 2.2: managing drainage for enterprises: the method comprises a short-flow recycling route and an enterprise internal recycling route; the short-process recycling specifically comprises the following steps: judging the water quality of the wastewater discharged after the in-situ treatment and reuse equipment in the production link is used for treating, wherein if the water quality of the wastewater meets the requirement of the process in the production link on the water quality, the wastewater can be directly used as inlet water to be produced in the production link, otherwise, the wastewater is discharged into a sewage treatment station;

the enterprise internal recycling specifically comprises the following steps: and judging the quality of the effluent of the sewage treatment station, if the quality of the effluent meets the water quality requirement of a water consumption link, the effluent enters a water consumption link, otherwise, the effluent is discharged into a municipal drainage pipeline after the effluent is treated in the sewage treatment station to reach the water quality specified by a water pollutant discharge standard.

Step 2.3: dispatching plant network river integration

2.31 optimizing the operation of the sewage collecting and treating system;

2.32 jointly regulate and control a tail water treatment and recycling system;

2.33 controlling the water quantity and the water quality of the river water flow.

Further, the step 2.31 of optimizing the operation of the sewage collecting and treating system comprises the following specific processes:

2.311 building a regional sewage pipe network model by using SWMM software;

2.312 establishing a joint optimization scheduling model of the multi-stage sewage pumping station;

2.313 the optimized dispatching model of the sewage pipe network model and the multi-stage sewage pump station is coupled by using a SWMM model interface package PySWMM developed based on Python language, and the solution is carried out by taking genetic algorithm as a solving method. Solving the obtained pumping flow value of the multi-stage sewage pumping station to obtain an optimized operation scheduling scheme;

2.314A model of water quantity and quality of sewage treatment plant is established by ASM2D software, a model of sewage treatment structure mainly based on biological reactions such as hydrolysis acidification pool, AAO reaction pool, CASS pool and the like is established, and an empirical model is adopted to establish a model for coagulating sedimentation and filtering treatment process to form a sewage treatment full-flow model of the sewage plant. And (3) inputting the scheduling scheme obtained in the step (2.313) into a sewage pipe network model to calculate water inlet amount and quality data of the sewage plant, inputting the data into a water amount and quality model of the sewage plant, and adjusting the values of parameters in the operation process of the sewage plant. So that the effluent quality of the sewage treatment plant meets the first-grade A standard. Each parameter value is the operation scheme of the sewage plant;

the combined optimization scheduling model of the multistage sewage pump station consists of a target function and constraint conditions, and specifically comprises the following contents:

1) objective function

i. Minimum pumping flow amplitude variation of each pump station

Wherein a is the number of sewage pumping stations, Q_i,tFor the ith pump stationFlow rate (m) in the t-th period³/h)，

Time-interval average flow (m) for the ith pump station³/h)；

ii, the quality of inlet water of the sewage treatment plant is stable

In the formula, c_a,tThe concentration (mg/L) of the water inlet pollutant of the sewage treatment plant in the period t,

the concentration average value (mg/L) of the influent pollutants of the sewage treatment plant is obtained;

iii, minimum energy consumption of pump station water pump unit

In the formula, λ_i,j,tThe operation state of the jth water pump of the ith pump station in the t period is lambda-0 or 1, 0 represents that the water pump is shut down, 1 represents that the water pump is started up, and eta represents_i,j,2The motor efficiency of the jth water pump of the ith pump station; n is a radical of_i,j,tShaft power (kW) of the jth water pump of the ith pump station in the period t, and rho is liquid density (kg/m)³) G is the acceleration of gravity, Q_i,j,tThe flow (m) of the jth water pump of the ith pump station in the tth time period³/h)，H_i,j,tThe lift (m), eta of the jth water pump of the ith pump station in the tth time period_i,j,1The efficiency of the jth water pump of the ith pump station under the working condition is determined;

iv, minimum number of water pump start-stops

In the formula (I), the compound is shown in the specification,

taking a value for the start-stop loss conversion coefficient of the jth water pump of the ith pump station according to the self condition of the water pump;

2) constraint conditions

i. Balance of water

ii, reservoir volume and water level constraint of pump station

V_i，min≤V_i，t＝V_i，t-1+q_i，tΔt-Q_i，tΔt≤V_i，max

Z_i，min≤Z_i，t≤Z_i，max

Z_i，t＝f(V_i，t)

In the formula, V_i，tAmount of water (m) stored for reservoir of ith pump station during period t³)，V_i，t-1The amount of water (m) stored in the reservoir for the ith pump station during the t-1 period³)，q_i，tThe water inlet flow (m) of the reservoir at the ith pump station t³/h)，V_i，minAnd V_i，maxMinimum and maximum water volume (m) respectively stored for the reservoir of the ith pump station³)，Z_i，tThe water level (m), Z of the reservoir at the t period of the ith pump station_i，minAnd Z_i，maxThe lowest water level and the highest water level (m) of the reservoir of the ith pump station are respectively;

flow restriction of pumping stations

0≤Q_i，t≤∑Q_i，j，max

Q_i，j，min≤Q_i，j，t≤Q_i，j，max

In the formula, Q_i，j，minAnd Q_i，j，maxThe jth water pump height of the ith pump station respectivelyMinimum and maximum flows corresponding to the effective interval;

pump station lift constraint: the pump lift of the water pump is not less than the sum of the static pump lift and the head loss of the water pressing pipe, and the static pump lift is calculated according to the water outlet elevation and the water level of the storage tank

H_i，j，t≥Zo_i，max-Z_i，t+s_i，jQ_i，j，t ²

In the formula, H_i，j，tIs the lift (m), Zo of the jth water pump of the ith pump station at the t moment_i，maxIs the water outlet elevation (m), Z of the ith pump station_i，tIs the water level (m, s) of the water collecting tank at the moment t of the ith pump station_i，jThe loss coefficient of the jth water pump of the ith pump station is;

v. pump station downstream pipeline water level constraint

h_m,min≤h_m，t≤h_m，max

In the formula, h_m，tIs the water level of the m pipe sections at the downstream of the pump station in the period t, h_m，minAnd h_m，maxMinimum and maximum water levels allowed for the m pipe sections;

pipe network minimum flow rate limitation

v_m，t≥v_m，min

In the formula, v_m，tFlow velocity (m/s), v for m pipe sections downstream of the pump station in t periods_m，minMinimum flow velocity (m/s) allowed for m pipe sections;

water inlet amount constraint of sewage treatment plant

Instantaneous control: the average water inlet flow is within 25 percent of the average water inlet flow

And (3) total amount control: 75 to 90 percent of the daily water inlet amount

In the formula, Q_a，tFor t time period sewage treatmentInflow (m) of end-point pump station in plant³/h)；Si_dDesigned daily water inlet amount (m) of sewage treatment plant³)；

Non-negative constraints: the flow, water level and lift should all be no less than 0.

Further, the step 2.32 of jointly regulating and controlling the tail water treatment and recycling system comprises the following specific processes:

2.321 form a sewage plant tail water control scheme: collecting the daily water consumption data of the municipal water, taking the tail water of the sewage plant as a water source, supplying the same amount of tail water to the municipal water, wherein the flow of the part of tail water is

In the formula, Q_MFlow rate (m) of tail water of sewage plant for supplying municipal water³/h)；

Discharging the residual tail water into the artificial wetland;

2.322 form a reclaimed water plant inlet water control scheme: lifting water from the artificial wetland to a regeneration water plant by a lifting pump station, and forming an optimized dispatching model aiming at the lifting pump station;

the specific contents of the optimized scheduling model of the lifting pump station of the water reclamation plant are as follows:

1) objective function

i. Pumping water quantity amplitude variation minimum for lifting pump station

In the formula, Q_R，tFor the pump station t time period flow (m)³/h)，

Time-interval average flow (m) for pumping station³/h)；

ii, lowest energy consumption of pump station unit

In the formula, λ_R，k，tThe operation state of the kth water pump of the pump station in the period t is represented by lambda which is 0 or 1, 0 represents that the water pump is shut down, 1 represents that the water pump is started up, and eta represents_R，k，2The motor efficiency of the kth water pump of the pump station; n is a radical of_R，k，tShaft power (kW) of a kth water pump of a pump station in a t period;

iii, the number of times of opening and closing the pump station unit is minimum

In the formula (I), the compound is shown in the specification,

taking a value for the start-stop loss conversion coefficient of the kth water pump of the pump station according to the condition of the water pump;

2) constraint conditions

i. Balance of water

In the formula (I), the compound is shown in the specification,

time-interval average flow (m) for lifting pump station for regeneration water plant³/h)；

Total reclaimed water limit

In the formula: beta is a_RThe water consumption rate of the regeneration water plant;

iii lifting pump station reservoir volume and level control

V_R，min≤V_R，t＝V_R，t-1+QC_o，1，tΔt-Q_R，tΔt≤V_R，max

Z_R，min≤Z_R，t≤Z_R，max

Z_R，t＝f(V_R，t)

In the formula, V_R，tAnd V_R，t-1The amount of water (m) stored in the reservoir of the pump station is t hour and t-1 hour respectively³)，Q_Co，1，tThe water inlet flow (m) flowing into the reservoir from the artificial wetland at the moment t³/h)，V_R，minAnd V_i，maxMinimum and maximum water volume (m) stored for reservoir of ith pump station³)，Z_R，tIs the water level (m), Z of the reservoir in the period t of the pump station_R，minAnd Z_R，maxThe lowest water level and the highest water level (m) of a reservoir of a pump station;

flow restraint for lift pumping station

0≤Q_R，t≤∑Q_R，j，max

Q_R，j，min≤Q_R，j，t≤Q_R，j，max

In the formula, Q_R，j，minAnd Q_R，j，maxThe minimum and maximum flow (m) corresponding to the jth water pump high-efficiency interval of the water inlet pump station³/h)；

v, lift restraint of a lifting pump station: the pump lift of the water pump is not less than the sum of the static pump lift and the head loss of the water pressing pipe, and the static pump lift is calculated according to the water outlet elevation and the water level of the storage tank

H_R，j，t≥Zo_R，max-Z_R，t+s_R，jQ_R，j，t ²

In the formula, H_R，j，tIs the lift (m), Zo of the jth water pump t of the pump station_R，maxIs the outlet water elevation (m), Z of the pump station_R，tThe water level (m), S of the reservoir at the moment t of the pump station_R，jThe loss coefficient of the jth water pump of the pump station;

vi, limiting the water supply quantity and the water quality of the artificial wetland:

c_Co，1，t≤c_R，d

in the formula, Co₁Amount of water (m) supplied to a regeneration water plant for an artificial wetland³)，c_Co，1，tWater quality (mg/L) of water flow for supplying artificial wetland to regeneration water plant, c_R，dThe requirement (mg/L) of the regeneration water factory on the quality of the inlet water is met;

non-negative constraints: the pumping flow, the water level and the lift are all not less than 0.

Further, the step 2.33 is a specific process of controlling the water quantity and the water quality of the river water flow, which comprises the following steps:

2.331 determining ecological water replenishing point: an EFDC software is adopted to establish a regional river hydraulic water quality model, river ecological water replenishing points are determined by combining the flood control requirement, the river water quality requirement and the river ecological base flow of the region, the model is utilized to simulate the condition of replenishing water by using the same replenishing water quantity at different positions, the river water quality in the simulation result is greater than the river water quality requirement and has the largest lifting amplitude, the position where the flow is higher than the ecological base flow and the water level is lower than the flood control water level is the river ecological water replenishing point,

2.332 determining the river inflow variation range: coupling a river hydraulic water quality model and a regional production convergence model by using EFDC (efficient fluid dynamics) and SWMM (single-wall programmable) software, simulating the water level, flow and water quality of a river under the state of not taking measures, and performing trial calculation by using the model to obtain an inflow flow value when the river water level is equal to a flood control water level and an inflow flow value when the river flow just meets an ecological base flow;

2.333 establishing a river inflow water quality optimization regulation and control model aiming at the effluent of the artificial wetland and the rainwater storage tank;

2.334, coupling and integrally solving an optimized dispatching model of a lifting pump station of the reclaimed water plant and an optimized regulation and control model of the water quality of the river inflow, solving the optimized model by using a genetic algorithm, and determining the pumping flow of the lifting pump station, the inlet and outlet flow of the constructed wetland and the outlet flow of the rainwater regulation and storage tank, namely a dispatching scheme of the lifting pump station of the reclaimed water plant and a regulation and control scheme of the water quality of the river inflow;

2.335 determining the gate dam scheduling scheme: establishing a river hydraulic water quality model under gate dam ecological scheduling by using EFDC software coupled with a gate dam outflow equation, simulating the river flow, water level and water quality after implementing a river inflow water quality regulation scheme, and continuously regulating the gate opening value in the model until the lifting amplitude of the river water quality is maximum under the conditions that the water level is lower than the flood control water level and the flow is higher than the ecological water demand, wherein the finally obtained gate opening value is the gate dam scheduling scheme;

the specific contents of the water quantity and water quality optimization regulation and control model of the river inflow are as follows:

1) objective function

i. The water quality lifting amplitude is maximum:

in the formula, c_Ri，tThe water quality (mg/L) of the river at the time of t period, c_Ri，0The water quality (mg/L) of the river is the water quality when ecological water supplement is not carried out;

flow rate of water flow remains stable:

in the formula, Q_Co，2，tFlow rate (m) of water flowing from the constructed wetland into the river for a period of t³/h)，Q_Ra，tFlow rate (m) of water flowing from the rainwater storage tank into the river for a period t³/h)，

Time-averaged flow (m) for both³/h)；

2) Constraint conditions

i. Limiting water replenishing amount of constructed wetland

ii, water quality of artificial wetland water supply

c_Co，2，t≤c_Ri，d

In the formula, c_Co，2，tTo flow from artificial wetlandWater quality (mg/L) of water flow to river, c_Ri，dThe water quality requirement (mg/L) of the river inflow is met;

river inflow restriction:

in the formula: q_Ri，NMinimum river inflow, Q, required for the ecological-based flow of a river obtained by step 2) of claim 9_Ri，FMaximum river inflow limited by flood protection requirements;

in addition, considering the influence of inlet and outlet water on the treatment and purification effect of the artificial wetland and the requirement of the effluent quality, the following constraint conditions are also required to be met:

iv, artificial wetland water requirement: net input less than design water

In the formula, Q_Ci，tThe inlet flow (m) of the constructed wetland is the t period³/h)，Q_Co，tThe flow (m) of the constructed wetland effluent is t time period³/h)，C_dDesign water quantity (m) for artificial wetland³)；

v. requirements for constructed wetland volume

V_C，min≤V_C，t＝V_C，t-1+Q_Ci，tΔt-Q_Co，tΔt≤V_C，max

In the formula, V_C，tAnd V_C，t-1The water quantity (m) stored in the artificial wetland is t hour and t-1 hour respectively³)，V_C，minAnd V_C，maxThe minimum and maximum water quantity (m) allowed under the normal operation condition of the artificial wetland³)；

Hydraulic residence time requirement:

wherein T is hydraulic retention time, V_maIs the volume (m) of the artificial wetland substrate in the natural state³) Comprises a substrate body and open and closed gaps thereof, epsilon is porosity, T_minAnd T_maxMinimum and maximum values (d) allowed by hydraulic retention time;

vii, requirements of surface hydraulic load of the artificial wetland:

in the formula, Q_hsIs surface hydraulic load (m)³/(m²D)), A is the area of the constructed wetland (m)²)，Q_hs，minAnd Q_hs，maxMinimum and maximum values (m) allowed for surface hydraulic load³/d)；

Requirements of the hydraulic gradient of the constructed wetland:

in the formula, I is the hydraulic gradient (%), delta is the water level drop value (m) of water on the length of the seepage path in the constructed wetland, and L is the horizontal distance (m) of the seepage path of the water in the constructed wetland.

The invention has the beneficial effects that:

the invention jointly manages wading factors such as a water supply system, an enterprise, a drainage system, a sewage treatment system, a river and lake water system and the like in the regional water circulation process, realizes linkage and mutual coordination of all links, forms a regional water affair management mode for uniformly managing the wading factors, and effectively and efficiently solves the water problems such as regional water resource supply and demand imbalance, water quality deterioration and the like.

Drawings

Figure 1 is a diagram of the optimized regional water network system of the present invention,

FIG. 2 is a technical scheme of the method of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings.

Specific applications of the present invention are given below, managing regional water resources primarily from three directions:

1, water resource optimization configuration: the current situation of a region is investigated, the water quantity and water quality requirements of the region are analyzed, and water resource optimal allocation and distribution of the region based on the water quantity and the water quality are realized by taking the water resource utilization amount, the water environment quality, the operation cost and the like as targets.

2 typical industrial drainage management: and optimizing the water use in the enterprise, recycling the sewage and managing the drainage by utilizing the optimization result of the water resource configuration model and combining key indexes in the water use and drainage process of the typical industry in the region.

3, integrated dispatching management of the network and the river of the plant: by sensing and collecting stored information such as water unit drainage data and the like, coordinating wading elements such as a drainage system, a sewage treatment system (including a sewage treatment plant, a wetland, a sewage recycling facility and the like) and a river and lake water system in an area, performing combined optimized dispatching of the elements, and solving the problem of regional water environment.

In some embodiments, the water resource optimization configuration comprises: investigating the current situation of the area; analyzing regional water problems; water resource allocation; and (5) scheduling and managing a water supply pipe network system.

The current situation of the investigation region comprises: 1) water system distribution, water environment quality and hydraulic engineering conditions; 2) water resource quantity and composition thereof; 3) water consumption, water consumption structure, water quality requirements and the like; 4) the water discharge quantity and the water quality of each user are equal; 5) water supply and drainage system conditions; 6) sewage treatment system conditions; 7) current situation of regional water affair management; 8) and constructing a database to store the analysis data.

The specific steps for analyzing regional water problems include: 1) analyzing the water resource supply and demand balance relation of the region by considering the water demand and the water quality requirement of each water user; 2) analyzing the collection and conveying efficiency of the regional drainage system, and analyzing the problems of the regional sewage system by combining the treatment capacity of the sewage treatment system; 3) analyzing the problems of regional water safety, water environment and water ecology; 4) analyzing the influence of hydraulic engineering in the area on water systems and the existing water problems; 5) and analyzing the water management problem in the regional water circulation process.

The concrete steps of the proposed water resource allocation are as follows: 1) based on the water usage path of the user and the requirement of water quantity and water quality, the water supply quantity of local water resource, non-local water resource and reclaimed water is adjusted by combining the data of regional water resource quantity. 2) The water supply quantity and the composition of each part are adjusted and determined by taking the water consumption and the water quality requirements of enterprises, residents, municipal administration, ecology and other water consumers as targets, and the water resource supply and demand balance of each water consumer is realized.

The water supply network scheduling management method comprises the following specific steps: 1) arranging water quantity and water quality monitoring equipment, establishing a monitoring network system of a regional 'tap water-reclaimed water' unified water supply system, and storing and displaying data; 2) establishing a hydraulic model of a water supply system; 3) analyzing the leakage of the water supply system based on the current data and the monitoring data of the water supply system in the database, wherein the analysis comprises the positioning of a leakage point and the estimation of the leakage amount; 4) based on the result of water resource distribution, the optimization target of minimizing energy consumption, leakage consumption and operation cost is taken into consideration, and meanwhile, the water quality factor is considered, and an optimized dispatching model of the regional water supply system is established. And performing optimized scheduling of the regional water supply system by taking the requirement of the user on water as a constraint.

In some embodiments, typical industrial drain management includes: optimizing a water distribution network in an enterprise; recycling sewage in enterprises; and (5) enterprise drainage supervision.

The specific steps of the water distribution network optimization in the enterprise are as follows: 1) analyzing the water quantity and water quality requirements of each process unit and each water using path based on the production practice of typical industries by combining the water using path and the process flow; 2) a water distribution network optimization model is established according to water quantity and water quality requirements, and optimal configuration of the water distribution network is realized by using a multi-objective synchronous optimization method with the water resource utilization efficiency, the wastewater discharge amount, the water use cost, the reuse cost and the like as targets.

The proposed reuse of sewage in enterprises comprises: 1) short-process recycling: in the production link, key parameter indexes such as the requirement of the process on water quality and the cost of a treatment and recycling technology of sewage in a process unit are considered, the factors such as the lowest treatment cost and the lowest fresh water consumption are considered, a plant wastewater recycling optimization model is constructed, and the treatment and scheduling of the recycled sewage are carried out. 2) Recycling a non-production process: and analyzing the water use path and the water quality requirement of the enterprise, considering factors such as the cost of sewage treatment and reuse in the enterprise, and determining a sewage treatment and scheduling scheme by using a wastewater recycling optimization model.

The enterprise drainage supervision comprises the following steps: and (4) monitoring the drainage quantity and the water quality of a typical enterprise in real time, and displaying monitoring data in real time. Meanwhile, compared with the standard of a nano pipe, the method ensures that the water quality of the drainage of the enterprise meets the sewage discharge standard, and takes management measures in time for the enterprises exceeding the standard.

In some embodiments, the plant, network and river integrated scheduling management comprises: carrying out plant and network combined dispatching on the drainage system; managing a tail water advanced treatment system; and (4) water replenishing, repairing and regulating of the river and lake water system.

Drainage system plant net joint scheduling includes: dispatching a sewage pipe network; managing the operation of a sewage treatment plant; and (4) inter-plant joint scheduling of multiple sewage plants in the region.

The sewage pipe network scheduling includes: 1) analyzing the distribution condition of the regional sewage pipe network, dividing drainage subareas, arranging monitoring equipment at drainage outlets of the drainage subareas, and establishing a water quantity and water quality monitoring network of the regional sewage pipe network; 2) establishing a hydraulic simulation model of the regional sewage system by combining the history of the sewage system and real-time monitoring data; 3) establishing an optimized dispatching model of the regional sewage pipe network by taking parameters such as the fullness degree of the sewage pipe network as constraints with the optimization targets of stable water quantity at a water inlet of a sewage treatment plant, standard water quality and low system operation cost; 4) and the combined dispatching of the multistage sewage pumping stations in the region is realized by utilizing a sewage pipe network optimized dispatching model in combination with regional water user drainage data, a historical dispatching scheme and the like.

The operation management of the sewage treatment plant specifically comprises the following steps: 1) analyzing the operation data of the sewage treatment plant, and establishing an operation simulation model of the sewage treatment plant; 2) and adjusting the operation parameters of the sewage plant by using a sewage plant model according to the inflow and the water quality by combining a sewage pump station scheduling scheme and a sewage pipe network simulation result, so as to realize the high-efficiency operation of the sewage plant.

The inter-plant joint scheduling of multiple sewage plants in the area comprises the following specific steps: 1) and collecting real-time monitoring data of a large user water outlet and a small watershed outlet, and simulating and predicting the inflow water flow change condition of each sewage plant in the region by using a sewage system hydraulic model. 2) And analyzing a simulation result, and if the flow exceeds the treatment capacity of the sewage plant, adjusting the operation scheme of the sewage pump station by using a sewage pipe network optimization scheduling model with the aim of adjusting the flow to meet the treatment capacity of the sewage plant. 3) And if the flow rate still exceeds the treatment capacity of the sewage plant after the scheme is adjusted, a sewage scheduling scheme among the multiple sewage plants is provided by utilizing a sewage pipe network optimization scheduling model.

The management of the tail water advanced treatment system specifically comprises the following steps: the operation management of the artificial wetland and the operation management of the sewage recycling facility.

The specific content of the proposed operation management of the artificial wetland comprises the following steps: 1) flow and water quality monitoring equipment is arranged at the water inlet and the water outlet of the artificial wetland and the joints of all areas; 2) establishing an artificial wetland model by using the parameters and monitoring data of the artificial wetland; 3) according to the water quality of inlet water, river water replenishing and the requirements of the operation of a regeneration water plant on the water quality and the water quantity of outlet water, the artificial wetland model is utilized for simulation, and the operation parameters such as the flow of the inlet and the outlet of the artificial wetland are adjusted.

The management of the sewage recycling facility includes (taking a recycling water plant as an example): 1) flow and water quality monitoring equipment is arranged at the water inlet and the water outlet and the joint of each process unit; 2) and controlling the flow of inlet and outlet water and adjusting the operation scheme of the regeneration water plant by taking the supply amount of the regenerated water in the water resource optimization configuration result as a production target.

The specific contents of the river and lake water system water replenishing repair regulation comprise: the rainwater pipe network is used for scheduling, treating and utilizing, and the artificial wetland is used for water outlet and replenishing; gate pump scheduling and river course restoration measure management.

The rainwater pipe network scheduling and processing utilization management method comprises the following specific steps: 1) the rainfall monitoring equipment is arranged in the region, the flow monitoring equipment is arranged in a rainwater pipeline in the waterlogging-prone region, and the flow and water quality monitoring equipment is arranged at a water inlet/outlet and a water outlet of a regulation pool of a rainwater pipeline network. 2) And establishing a rainwater pipe network hydraulic water quality model. 3) And during rainfall, combining real-time monitoring data and utilizing a rainwater pipe network hydraulic water quality model to simulate the water quality and water quantity conditions in the regional rainwater pipe network. 4) And establishing a river water level flow simulation model, simulating the water level flow change condition of the river during and after rainfall, and determining the river water supplement amount. 5) During raining in dry seasons, initial rainwater is collected and treated to be dischargeable, real-time monitoring data of water quality at the inlet of the regulation and storage tank are combined in the middle and later periods of raining, only storage can be achieved if the discharge standard is met, and treatment to be dischargeable is performed if the water quality is poor. And determining a scheduling scheme of the regulating and storing pool according to the river channel water supply amount and the river water level flow model. 6) When raining in rainy season, the initial rainwater enters the regulation and storage tank and is treated. And (4) monitoring the water quality at the inlet of the storage tank in real time in the middle and later periods of rainfall, and if the water quality is poor, processing and storing the rest water. The real-time monitoring data of the waterlogging area is combined, and the tail end of the pipe section is ensured to be at a high water level under the condition of no overflow so as to delay the river entering. And (4) simulating river channel flow and water level, and determining a scheduling scheme of the regulating and storing pool after considering factors such as river flood control water level and the like.

The specific contents of gate pump scheduling and river course repair measure management include: 1) establishing a river channel gate pump hydraulic model; 2) in dry seasons, parameters such as river channel water quality, flow velocity, water level, flow and ecological base flow are comprehensively considered, factors such as river water supplement amount are considered, operation parameters such as opening degree of a river sluice pump are adjusted under the condition of ensuring water safety and with the aim of improving the river water environment quality; 3) if the river water environment quality does not reach the standard after the gate pump is scheduled, river channel restoration measures such as aeration and the like are adopted; 4) and in rainy season, combining a rainwater pipe network scheduling scheme and real-time monitoring data to control the river water level to be lower than the flood control water level, and determining a gate pump scheduling scheme by using a gate pump hydraulic model.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a system that regional enterprise's net river integration joint optimization was dispatched which characterized in that: the system comprises a water resource optimization configuration and distribution system, an enterprise drainage system and a plant network river system, wherein the water resource optimization configuration and distribution system and the enterprise drainage system are connected through a tap water supply pipe network system and a reclaimed water supply pipe network system; the drainage system for the enterprise and the plant network river system are connected with a sewage pipe network system and corresponding pipelines through a sewage treatment station in the enterprise;

2. A method for integrated combined optimized scheduling of network and river of regional enterprise plants is characterized by comprising the following steps: the method comprises the following steps:

step 1: establishing a regional water resource optimal configuration model according to the current situation of regional water resources;

3. The method for integrated combined optimized dispatching of regional enterprises, factories and rivers according to claim 2, characterized in that: the specific process of the step 1 is as follows:

4. The method for integrated combined optimized dispatching of regional enterprises, factories and rivers according to claim 2, characterized in that: the regional water resource optimal configuration model in the step 1 is composed of an objective function and constraint conditions, and the specific contents are as follows:

(1) objective function

in the formula, F_iThe fresh water consumption of each water user is t/d;

wherein, alpha is the proportion of local water in fresh water, Rp_lFor individual consumersWater consumption (t/d), Rf, of regeneration water from a regeneration water network_1，lThe water consumption (t/d), Rf, of the reclaimed water from the in-situ treatment and reuse for each enterprise user_2，lThe water consumption (t/d) of the reclaimed water treated by the sewage station for each enterprise user, Si (t/d) of the sewage treated by the park sewage plant, Ci (t/d) of the artificial wetland, Ra (t/d) of the rainwater regulation and storage tank, e_α、e_1-α、e_Rp、

e_Si、e_Ci、e_RaThe cost (yuan/t) of water treatment per ton of local water, external water, reclaimed water, in-situ treatment in an enterprise, treatment of a sewage station in the enterprise, a sewage plant, an artificial wetland and a rainwater storage tank is respectively;

1.3) maximum water quality lifting amplitude of river

f₃＝min(c_Ri,1-c_Ri,0)

In the formula: c. C_Ri,1The water quality (mg/L) of the river after taking measures c_Ri，0The river water quality (mg/L) before taking measures is adopted;

(2) constraint conditions

(1-β_l)(F_l+Rp_l+Rf_1，l+Rf_2，l)＝E_1，l+E_2，l

In the formula, beta_lTo a loss rate, E_1，lThe water quantity (t/d) discharged to the in-situ treatment and recycling link for the enterprise water consumption link, E_2，lThe water quantity (t/d) discharged to a sewage treatment station in the enterprise water consumption link;

Industrial water:

F_l+Rp_l+Rf_1，l+Rf_2，l＝F_i，0

domestic water:

F₁＝F_1，0

municipal water:

So₁≥M

in the formula, F_l，0The fresh water consumption (t/d) and F of each enterprise user before configuration are optimized₁And F_1，0Respectively the domestic water consumption (t/d) before and after the preparation, So₁The quantity (t/d) of municipal water supplied by a sewage treatment plant after optimal configuration, wherein M is the quantity (t/d) of the municipal water;

W_R,N≤Co₂+Ra≤W_R,F

In the formula, Co₂The amount of water (t/d) discharged from the constructed wetland into the river. W_R,NThe minimum water demand (t/d), W of the river is calculated by utilizing a river hydraulic water quality model according to the ecological base flow of the river_R，FThe calculated maximum water demand (t/d) of the river;

2.4) water resource available water supply limitation:

5. The method for integrated combined optimized dispatching of regional enterprises, factories and rivers according to claim 2, characterized in that: the step 2 specifically comprises the following steps:

step 2.1: regulating and controlling water transporting and distributing system

2.1.1 establishing a tap water pipe network hydraulic model

2.1.13 model verification: inputting historical water consumption data of users in different groups of regions for multiple times, operating the model to obtain a simulated water pressure result, if the deviation of the simulated result and the actual monitoring data is less than 20%, enabling the model, otherwise, returning to the step 2.1.12;

2.1.2 establishing a hydraulic model of a reclaimed water pipe network

step 2.2: managing drainage for enterprises: the method comprises short-flow recycling and enterprise internal recycling, wherein the short-flow recycling specifically comprises the following steps: judging the water quality of the wastewater discharged after the in-situ treatment and reuse equipment in the production link is used for treating, wherein if the water quality of the wastewater meets the requirement of the process in the production link on the water quality, the wastewater can be directly used as inlet water to be produced in the production link, otherwise, the wastewater is discharged into a sewage treatment station;

the enterprise internal recycling specifically comprises the following steps: judging the effluent quality of the sewage treatment station, if the effluent quality meets the water quality requirement of a water consumption link, enabling the wastewater to enter a water consumption link, and if not, discharging the wastewater into a municipal drainage pipeline after the wastewater is treated in the sewage treatment station to reach the water quality specified by a water pollutant discharge standard;

step 2.3: dispatching plant network river integration

2.31 optimizing the operation of the sewage collecting and treating system;

2.32 jointly regulate and control a tail water treatment and recycling system;

6. The method for integrated, joint and optimized dispatching of regional enterprises, factories and rivers according to claim 5, characterized in that: the step 2.31 is to optimize the specific process of operating the sewage collecting and treating system as follows:

2.311 building a regional sewage pipe network model by using SWMM software;

2.313, coupling the sewage pipe network model and the multi-stage sewage pump station optimized scheduling model by using a Python language-based SWMM model interface package PySWMM, and solving by taking a genetic algorithm as a solving method, wherein the solved multi-stage sewage pump station pumping flow value is an optimized operation scheduling scheme;

2.314, establishing a model of water quality and quantity for sewage treatment plant by ASM2D software, establishing a model of sewage treatment structure mainly based on biological reactions such as hydrolysis acidification pool, AAO reaction pool, CASS pool, etc., establishing a model by using an empirical model for the process of coagulating sedimentation and filtering treatment, forming a sewage treatment full flow model for sewage plant, inputting the scheduling scheme obtained in step 2.313 into a sewage pipe network model to calculate water quality and quantity data of inlet water of sewage plant, inputting the data into the water quality and quantity model of sewage treatment plant, and adjusting the value of parameters in the process of operating the sewage plant. The effluent quality of the sewage treatment plant meets the first-level A standard, and each parameter value is the operation scheme of the sewage treatment plant;

1) objective function

i. Minimum pumping flow amplitude variation of each pump station

Wherein a is the number of sewage pumping stations, Q_i，tFor the flow (m) of the ith pumping station in the t-th period³/h)，

Time-interval average flow (m) for the ith pump station³/h)；

ii, the quality of inlet water of the sewage treatment plant is stable

In the formula, c_a，tThe concentration (mg/L) of the water inlet pollutant of the sewage treatment plant in the period t,

iii, minimum energy consumption of pump station water pump unit

In the formula, λ_i,j,tThe operation state of the jth water pump of the ith pump station in the t period is lambda-0 or 1, 0 represents that the water pump is shut down, 1 represents that the water pump is started up, and eta represents_i,j,2The motor efficiency of the jth water pump of the ith pump station; n is a radical of_i,j,tShaft power (kW) of the jth water pump of the ith pump station in the period t, and rho is liquid density (kg/m)³) G is the acceleration of gravity, Q_i，j，tFor the ith pumping station, the jth water pump in the tth periodFlow rate (m)³/h)，H_i,j,tThe lift (m), eta of the jth water pump of the ith pump station in the tth time period_i,j，1The efficiency of the jth water pump of the ith pump station under the working condition is determined;

iv, minimum number of water pump start-stops

In the formula (I), the compound is shown in the specification,

2) constraint conditions

i. Balance of water

ii, reservoir volume and water level constraint of pump station

V_i，min≤V_i，t＝V_i，t-1+q_i,tΔt-Q_i,tΔt≤V_i，max

Z_i，min≤Z_i,t≤Z_i,max

Z_i,t＝f(V_i，t)

In the formula, V_i，tAmount of water (m) stored for reservoir of ith pump station during period t³)，V_i，t-1The amount of water (m) stored in the reservoir for the ith pump station during the t-1 period³)，q_i，tThe water inlet flow (m) of the reservoir at the ith pump station t³/h)，V_i，minAnd V_i，maxMinimum and maximum water volume (m) respectively stored for the reservoir of the ith pump station³)，Z_i，tThe water level (m), Z of the reservoir at the t period of the ith pump station_i,minAnd Z_i,maxThe lowest water level and the highest water level (m) of the reservoir of the ith pump station are respectively;

flow restriction of pumping stations

0≤Q_i，t≤∑Q_ij，max

Q_i，j，min≤Q_i，j，t≤Q_i，j，max

In the formula, Q_i，j，minAnd Q_i，j,maxRespectively corresponding minimum and maximum flow rates of a jth water pump high-efficiency interval of an ith pump station;

H_i,j，t≥Zo_i，max-Z_i，t+s_i,jQ_i,j,t ²

In the formula, H_i,j,tIs the lift (m), Zo of the jth water pump of the ith pump station at the t moment_i,maxIs the water outlet elevation (m), Z of the ith pump station_i，tIs the water level (m, s) of the water collecting tank at the moment t of the ith pump station_i,jThe loss coefficient of the jth water pump of the ith pump station is;

v. pump station downstream pipeline water level constraint

h_m,min≤h_m，t≤h_m，max

In the formula, h_m，tIs the water level of the m pipe sections at the downstream of the pump station in the period t, h_m,minAnd h_m,maxMinimum and maximum water levels allowed for the m pipe sections;

pipe network minimum flow rate limitation

v_m,t≥v_m,min

In the formula, v_m,tFlow velocity (m/s), v for m pipe sections downstream of the pump station in t periods_m,minMinimum flow velocity (m/s) allowed for m pipe sections;

water inlet amount constraint of sewage treatment plant

Instantaneous pressing: the average water inlet flow is within 25 percent of the average water inlet flow

And (3) total amount control: 75 to 90 percent of the daily water inlet amount

In the formula, Q_a，tThe water inlet flow (m) of a destination pump station in the sewage treatment plant in the t period³/h)；Si_aDesigned daily water inlet amount (m) of sewage treatment plant³)；

7. The method for integrated, joint and optimized dispatching of regional enterprises, factories and rivers according to claim 6, characterized in that: the step 2.32 is a specific process for jointly regulating and controlling the tail water treatment and recycling system, which comprises the following steps:

Discharging the residual tail water into the artificial wetland;

1) objective function

i. Pumping water quantity amplitude variation minimum for lifting pump station

In the formula, Q_R，tFor the pump station t time period flow (m)³/h)，

Time-interval average flow (m) for pumping station³/h)；

ii, lowest energy consumption of pump station unit

In the formula (I), the compound is shown in the specification,

2) constraint conditions

i. Balance of water

In the formula (I), the compound is shown in the specification,

Total reclaimed water limit

iii lifting pump station reservoir volume and level control

V_R，min≤V_R，t＝V_R，t-1+Q_Co，1，tΔt-Q_R，tΔt≤V_R，max

Z_R，min≤Z_R，t≤Z_R，max

Z_R，t＝f(V_R，t)

flow restraint for lift pumping station

0≤Q_R，t≤∑Q_R，j，max

Q_R，j，min≤Q_R，j，t≤Q_R，j，max

H_R，j，t≥Zo_R，max-Z_R，t+s_R，jQ_R，j，t ²

In the formula, H_R，j，tIs the lift (m), Zo of the jth water pump t of the pump station_R，maxIs the outlet water elevation (m), Z of the pump station_R，tThe water level (m, s) of the reservoir at the moment t of the pump station_R，jThe loss coefficient of the jth water pump of the pump station;

c_Co，1，t≤c_R,d

in the formula, Co₁Amount of water (m) supplied to a regeneration water plant for an artificial wetland³)，c_Co，1，tWater quality (mg/L) of water flow for supplying artificial wetland to regeneration water plant, c_R,dThe requirement (mg/L) of the regeneration water factory on the quality of the inlet water is met;

8. The method for integrated, joint and optimized dispatching of regional enterprises, factories and rivers according to claim 6, characterized in that: the step 2.33 is a specific process for controlling the water quantity and the water quality of the river water flow as follows:

1) objective function

i. The water quality lifting amplitude is maximum:

in the formula, c_Ri,tThe water quality (mg/L) of the river at the time of t period, c_Ri,0The water quality (mg/L) of the river is the water quality when ecological water supplement is not carried out;

flow rate of water flow remains stable:

Time-averaged flow (m) for both³/h)；

2) Constraint conditions

i. Limiting water replenishing amount of constructed wetland

ii, water quality of artificial wetland water supply

c_Co，2，t≤c_Ri，d

In the formula, c_Co，2，tThe water quality (mg/L) of the water flow from the artificial wetland to the river, c_Ri，dThe water quality requirement (mg/L) of the river inflow is met;

river inflow restriction:

iv, artificial wetland water requirement: net input less than design water

v. requirements for constructed wetland volume

V_C，min≤V_C，t＝V_C，t-1+Q_Ci，tΔt-Q_Co，tΔt≤V_C，max

Hydraulic residence time requirement:

vii, requirements of surface hydraulic load of the artificial wetland:

Requirements of the hydraulic gradient of the constructed wetland:

in the formula, I is the hydraulic gradient (%), Delta H is the water level drop value (m) of water on the length of the seepage path in the artificial wetland, and L is the horizontal distance (m) of the seepage path of the water in the artificial wetland.