Rapid pollutant reducing method for river and lake restoration

A pollutant, rapid technology, applied in chemical instruments and methods, polluted waterway/lake/pond/river treatment, biological treatment devices, etc., can solve problems such as poor effluent quality, low treatment efficiency, and low sewage treatment capacity , to achieve the effect of saving operating costs, high treatment efficiency, and improving sewage treatment capacity

Pending Publication Date: 2019-12-31
KESHENG ENVIRONMENTAL PROTECTION TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (1) In view of the problems of low sewage treatment capacity, low treatment efficiency and poor effluent quality in the existing in-situ ecological treatment system of sewage outlets, a rapid and effective pollutant reduction technology has been developed to deal with possible rain caused by the rainy season Unexpected situations such as mixed flow of sewage and incomplete interception of sewage;

Method used

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  • Rapid pollutant reducing method for river and lake restoration
  • Rapid pollutant reducing method for river and lake restoration

Examples

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Effect test

Embodiment 1

[0041] It is a closed lake with an area of ​​15,600 square meters and an average depth of 3m. There are rainwater outlets around the lake, and there is pollution from initial rainwater and surface runoff. The water volume of the sewage outlet is 5t / h, and the main pollutants are COD, ammonia nitrogen, total nitrogen and total phosphorus. The water quality before treatment was inferior to Class V in the Surface Water Environmental Quality Standard (GB3838-2002). The specific water quality: PH 7~9, COD 105mg / L, ammonia nitrogen 6.0mg / L, and total phosphorus 2.0mg / L.

[0042]Due to the current situation, the sewage cannot be connected to the sewage pipe network, and the surrounding land resources are tight, so it is impossible to use integrated sewage treatment equipment for purification. The process of the invention is adopted to treat the sewage at the sewage outlet. In the existing river channel, a three-stage water treatment area is constructed by using soft enclosures, and ...

Embodiment 2

[0050] A certain river course flowing from east to west with a length of 5000m, an average width of 15m and an average depth of 3m has a direct sewage outlet at the westernmost end, causing pollution to the water body of the river. The water volume of the sewage outlet is 10t / h, and the main pollutants are COD, ammonia nitrogen, total nitrogen and total phosphorus. The water quality before treatment was inferior to Class V in the Surface Water Environmental Quality Standard (GB3838-2002). The specific water quality: PH 7~9, COD 90mg / L, ammonia nitrogen 3.3mg / L, and total phosphorus 1.0mg / L.

[0051] Due to the current situation, the sewage cannot be connected to the sewage pipe network, and the surrounding land resources are tight, so it is impossible to use integrated sewage treatment equipment for purification. The process of the invention is adopted to treat the sewage at the sewage outlet. In the existing river channel, a three-stage water treatment area is constructed by...

Embodiment 3

[0059] A city river with a length of 400m, an average width of 9m, and an average depth of 1.2m has a rainwater outfall at the starting point, and some sewage is mixed in the upstream rainwater pipes, causing pollution to the water body of the river. The water volume of the sewage outlet is 15t / h, and the main pollutants are COD, ammonia nitrogen, total nitrogen and total phosphorus. The water quality before treatment was inferior to Class V in the Environmental Quality Standard for Surface Water (GB3838-2002). The specific water quality: PH 7~9, COD 135 mg / L, ammonia nitrogen 5 mg / L, and total phosphorus 2 mg / L.

[0060] Due to the current situation, the sewage cannot be connected to the sewage pipe network, and the surrounding land resources are tight, so it is impossible to use integrated sewage treatment equipment for purification. The process of the invention is adopted to treat the sewage at the sewage outlet. In the existing river channel, a three-stage water treatment...

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Abstract

The invention discloses a rapid pollutant reducing method for river and lake restoration. Based on the problems of low sewage treatment capacity, low treatment efficiency, poor effluent quality and the like of the existing river and lake sewage draining exit in-situ ecological treatment system, the invention provides a technology capable of rapidly and effectively reducing pollutants and used fortreating rain-sewage mixed flow, incomplete sewage interception and other possibly existing unexpected situations caused by rainy seasons. According to the method, a three-section type water treatmentarea is constructed by utilizing a soft enclosure in existing river and lake, water flow is formed to flow in a pool in a plug flow manner to form an AO-like plug flow aeration pool, and reflux is performed at the tail end, such that the pool forms a complete mixing state; and a sewage draining exit in-situ ecological treatment system is constructed through agent feeding, aeration oxygenation, bionic artificial aquatic plants and floating plants; the method has characteristics of strong sewage purification capability, high treatment efficiency, good effluent quality, simple technological process, low investment and convenient management; and with the method, the discharged sewage can be pretreated firstly and then enters the riverway and is subjected to overall ecological restoration, sothat the subsequent ecological restoration efficiency is improved, and the operation cost is saved.

Description

technical field [0001] The invention relates to the field of river and lake water quality control, in particular to a method for rapidly reducing pollutants used in river and lake restoration. Background technique [0002] At present, more than 80% of the rivers in our country are polluted, and large water bodies such as lakes and reservoirs have been polluted to varying degrees. The water quality of rivers, lakes and reservoirs cannot meet the relevant testing indicators, nor can it fully meet the requirements of the people. In recent years, the state has planned and implemented important rivers, lakes, rivers and sewage outfall renovation projects, and completed the construction of important drinking water sources to meet standards. Implement comprehensive control of water pollution in key lakes such as Taihu Lake, Dongting Lake, Dianchi Lake, Chaohu Lake, Poyang Lake, Baiyangdian Lake, Wuliangsuhai Lake, Hulun Lake, and Aibi Lake, and internal source control of rivers an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F1/001C02F3/34C02F3/308C02F3/32C02F1/52C02F2209/08C02F2209/14C02F2209/16C02F2103/007C02F2203/006C02F2203/008C02F2303/14Y02A20/402
Inventor 李俊姚昆朱辉钮成超
Owner KESHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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