Powder water-treatment material on-line allocating and wet type treating water adding method

A technology for water treatment and water treatment, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of large investment, high investment and construction costs, restrictions on the application of powdered activated carbon and Promotion and other issues to achieve the effect of online deployment of variable doses and saving investment and construction costs

Inactive Publication Date: 2008-05-21
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problems of the existing technologies or methods for improving water treatment standards and dealing with water pollution accidents (such as: advanced treatment of ozone activated carbon, raw water pretreatment, etc.) are: the existing processes and facilities are difficult to meet new requirements, and it is difficult to Realized through simple technical transformation; the existing technology has problems such as large footprint, long implementation period, and large investment in the process of application and transformation. Therefore, the choice of flexible operation, low investment, and good organic matter treatment effect Powder water treatment technology has gradually become a consensus
[0004] Traditional powder water treatment technology has been difficult to be widely used and promoted for a long time, such as: powder activated carbon water treatment technology, because of its: 1) powder activated carbon powder is relatively fine (about 200 mesh), dust is easy to fly when it is put into use, and the work The environment and working environment are harsh; 2) Generally, the dry dosing method not only has problems in the operating environment, but also is difficult to measure powder water treatment materials; 3) For the wet dosing method, the existing technology is mostly intermittent deployment, so The pool that needs to be deployed has a large area, high investment and construction costs, and powdered activated carbon in the pool is easy to deposit, which restricts the application and promotion of powdered activated carbon technology

Method used

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  • Powder water-treatment material on-line allocating and wet type treating water adding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: "Water quality improvement type": Taking powdered activated carbon as an example, the online deployment and dosing method is applied to drinking water plants to strengthen organic matter treatment.

[0022] Basic situation of a water supply plant in a city: the daily water supply of the plant is 15×10 4 m 3 / d, under normal circumstances, the effluent through conventional treatment processes can meet the national standards. However, due to the seasonal organic pollution of the water source seriously affects the quality of the water supply, the effluent after the conventional water supply treatment process has an earthy smell, the chroma exceeds the standard, and the organic content (permanganate index CODmn) is 5-8mg / L.

[0023] In order to improve the water quality, powdered activated carbon is deployed online and water treatment method is added, and powdered activated carbon is added to the front end of the flocculation tank of the conventional water suppl...

Embodiment 2

[0026] Example 2: "Pollution emergency type": the dosing system taking powdered activated carbon as an example is applied to the emergency treatment and disposal of environmental pollution accidents at water intakes in water sources.

[0027] Basic situation of a water supply plant in a city: the daily water supply of the plant is 40×10 4 m 3 Around / d, the water is taken from the river flowing through the city. Because the upper reaches of the river have built many large industrial zones along the river, some of them belong to hazardous chemical production enterprises and petrochemical enterprises.

[0028] In order to build an emergency water quality treatment device at the water intake of the water plant to deal with possible water pollution at the intake caused by ship transportation and upstream enterprise accidents, the method of online deployment and dosing of powdered activated carbon is chosen to provide rapid and large-dose powder dry solid dosing response Water pol...

Embodiment 3

[0031] Example 3: "combination of peacetime and wartime": powdered activated carbon on-line deployment and dosing methods are simultaneously applied to the emergency treatment of water pollution in water sources and the improvement of water quality in water supply plants.

[0032] Basic situation of a water supply plant in a city: the daily water supply of the plant is 10×10 4 m 3 Around / d, the water is taken from the river flowing through the city. Because the upper reaches of the river have built many large industrial zones along the river, some of them belong to hazardous chemical production enterprises and petrochemical enterprises. At the same time, due to the discharge of domestic pollution sources, agricultural non-point sources, and industrial pollution sources, the water quality of rivers presents seasonal organic pollution characteristics, and there is even a tendency of algae outbreaks in some years.

[0033] In order to improve the water quality of the regular wa...

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Abstract

The invention relates to a purification technique of waste water, in particular to a technique of waste water treatment by using powder materials, which is applicable to the improvement of water quality and the emergency treatment of the polluted water. The method of the invention determines the needed amount of dried powder solid in accordance with the application field and the water quality, the needed water quantity according to the ratio of solid and liquid in mixed solution, and conveyer equipment that is matched with the volume of a mixing pool. The dried powder solid and water are conveyed by the conveyer equipment continuously and stably into the mixing pool under the control of an automatic control system of on-line mix and injection, and then are stirred evenly, thereby realizing the on-line, dynamic and proportional configuration of the mixed solution. Meanwhile the mixed solution after configuration is conveyed into a water treatment place. The method of the invention solves the difficulty in the continuous configuration of the dried powder solid during the water treatment, and is characterized by the low cost of investment construction, continuous, quick, and flexible-dose on-line configuration and injection, thereby guaranteeing the timely and efficient water treatment and having good economic and social benefits.

Description

technical field [0001] The invention relates to waste water purification treatment technology, in particular to waste water treatment technology using powder materials, which is suitable for improving water quality and emergency treatment of polluted water. Background technique [0002] The Ministry of Health promulgated the new "Drinking Water Hygienic Standard (GB5749-2006)" in 2006. Compared with the 1985 "Drinking Water Hygienic Standard (GB5749-85)", the main content is to improve the drinking water factory water quality. Standards, the new standards specifically increase the standards for organic matter (potassium permanganate index) and other toxic and harmful trace organic matter, while conventional urban drinking water plants are difficult to guarantee the quality of drinking water under the existing process conditions. In 2007, a large-scale outbreak of blue-green algae in Taihu Lake caused difficulties in urban water supply. The State Environmental Protection Admi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28
Inventor 金伟徐祖信曹达文
Owner TONGJI UNIV
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