Chlorine supplementation method to ensure the biological stability of water quality in long-distance water transmission network

一种生物稳定性、输水管的技术，应用在化学仪器和方法、氧化水/污水处理、水/污泥/污水处理等方向，能够解决余氯浓度低、异养菌落数高等问题，达到避免异味较重、保障生物稳定性的效果

Active Publication Date: 2022-07-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of low residual chlorine concentration and high number of heterotrophic bacterial colonies in the terminal water of the existing urban and rural long-distance water delivery network, and provide a method to ensure the biological stability of water quality in long-distance water delivery network. Chlorine Supplementary Method

Method used

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  • Chlorine supplementation method to ensure the biological stability of water quality in long-distance water transmission network
  • Chlorine supplementation method to ensure the biological stability of water quality in long-distance water transmission network
  • Chlorine supplementation method to ensure the biological stability of water quality in long-distance water transmission network

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specific Embodiment approach 1

[0235] Embodiment 1: The chlorine supplement method for ensuring the biological stability of water quality of long-distance water pipeline network in this embodiment is carried out according to the following steps:

[0236] 1. Select the target water pipeline network in the region, analyze the correlation between the residual chlorine and HPC in the water, and determine the minimum concentration limit of residual chlorine in the water that ensures the biological stability of the water quality of the water pipeline network;

[0237] 2. The effluent from the clear water tank of the water intake plant, establish the residual chlorine attenuation model and the DBPs generation and consumption model, and take samples from the sampling port of the water distribution main pipe to detect the water quality to test and optimize the water quality model;

[0238] 3. Taking the filtered water of the water plant as the object, the ammonia nitrogen concentration of the filtered water is measur...

specific Embodiment approach 2

[0241] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the method for establishing the residual chlorine decay model described in step 2 is as follows:

[0242] Take 50mL of water from the clear water tank of the water intake plant and add it to a 50mL colorimetric tube with a stopper to obtain multiple samples, and process different samples to measure the residual chlorine concentration. , the water sample has the water age of tt,

[0243] The following four assumptions are made in establishing the residual chlorine decay model:

[0244] (1) During actual disinfection, the decay reaction of residual chlorine and the generation reaction of DBPs are first-order reactions based on the concentration of residual chlorine;

[0245] (2) There is a fixed ratio s(DBPs) between the production of various DBPs and the consumption of residual chlorine;

[0246] (3) Various DBPs consumption reactions are first-order reactions based on their concentrations; ...

specific Embodiment approach 3

[0257] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the method for establishing the DBPs generation and consumption model described in step 2 is as follows:

[0258] Accurately measure 50mL of water from the clear water tank of the water plant and add it to a 50mL colorimetric tube with a stopper to obtain multiple samples. At the same time, accurately measure 30mL of water sample and add it to a 40mL Agilent screw-top sample bottle to obtain multiple samples, which can be used for different samples. Add ascorbic acid to the bottle to quench the DBPs generation reaction, and then measure the concentration of various DBPs to obtain the DBPs concentration of water samples of different water ages, and use tt to represent the hydraulic retention time of the clear water tank, because when the water is taken from the water outlet of the clear water tank, the water sample already exists tt water age;

[0259] The following four assumptions are ma...

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Abstract

The invention discloses a chlorine replenishing method for ensuring the biological stability of water quality of a long-distance water transmission pipeline network, which relates to a chlorine replenishing method for ensuring the biological stability of the water quality of a long-distance water transmission pipeline network. The invention aims to solve the problems of low residual chlorine concentration and high heterotrophic bacterial colony in the end water of the existing urban and rural overall planning long-distance water transmission pipeline network. The method is as follows: by installing the residual chlorine online detector and online flowmeter on the water pipeline network, the real-time detection value of residual chlorine and flow at this point is obtained, and the residual chlorine value of other points in the water pipeline network is calculated by the residual chlorine attenuation model, and the residual chlorine value is determined. In the area with the minimum concentration limit of chlorine, the number and location of chlorine replenishment points are determined according to the ammonia nitrogen concentration in the filtered water and the residual chlorine decay model for chlorine replenishment. The chlorine supplement method of the invention solves the problems of low residual chlorine concentration and high heterotrophic bacterial colony in the end water of the existing urban and rural overall planning long-distance water transmission pipeline network, effectively guarantees the biological stability of the water quality at the end of the pipeline network, and avoids the amount of chlorine input Too high will lead to the occurrence of heavy odor in the water. The invention belongs to the field of water treatment.

Description

technical field [0001] The invention relates to a method for supplementing chlorine for ensuring the biological stability of water quality in a long-distance water delivery pipeline network. Background technique [0002] Under the urban-rural integrated water supply mode, the service range of the water supply pipe network is relatively large, the structure of the pipe network is also relatively complex, and the water quality in the pipe network is unevenly distributed, especially at the end of the water supply pipe network, where the water stays in the pipe for a long time. Complicated physical, chemical and biological effects occur in the pipeline, which can easily lead to water quality deterioration, so that the water quality at the end of the pipe network cannot be effectively guaranteed, and the service level of the water supply pipe network system is affected; on the contrary, the residual chlorine concentration in the pipe network is too high. It will lead to a heavy o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06Q50/06G06F17/18C02F1/76C02F1/50
CPCG06F17/18G06Q50/06C02F1/50C02F1/76C02F2209/29C02F2209/14C02F2209/40Y02A20/152
Inventor 陈忠林武晓飞沈吉敏王斌远孔艳丽
Owner HARBIN INST OF TECH
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