Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water

A water source water and micro-pollution technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as difficult operation and management, long process flow, and high construction and operation costs , to achieve the effect of improving water quality safety, simple operation and management, and ensuring the quality of effluent water

Active Publication Date: 2014-02-26
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The common ammonia nitrogen treatment methods mainly include adsorption removal method, breakpoint chlorination method and biological denitrification method, etc. Among them, the adsorption removal method is rarely used because of its shortcomings such as high construction and operation costs and difficult operation and management; Although it can remove ammonia nitrogen in water, the increase in chlorine dosage will easily lead to an increase in the risk of disinfection by-products, resulting in a decrease in water quality safety; biological denitrification me...

Method used

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  • Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water
  • Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water
  • Process system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water

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Embodiment 1

[0053] Example 1: The groundwater quality of a water source in Northwest China is complicated, and there are many types of pollutants. Iron and manganese are the most common. Chromaticity, turbidity, and visible substances are seasonally exceeded, and the ammonia nitrogen in the water source is also increasing year by year. high trend. The applicant proposed and applied the above-mentioned inventive process according to its water quality conditions, and carried out a pilot test for 1 to 2 years. Pilot system design maximum processing capacity 1m 3 / h, the air oxidation adopts the form of downward spray; the filter column adopts homogeneous quartz sand filter material, the equivalent particle size is 1.20mm, and the unevenness coefficient K 80 =1.38, the thickness of the filter layer is 1.2m; the auxiliary oxidant is potassium permanganate, the theoretical dosage is determined according to the concentration of iron and manganese ions in the water, and the actual dosage is 90-1...

Embodiment 2

[0056] Example 2: A water plant in Northwest China uses underground water sources. Due to years of mining in the water sources, affected by factors such as geological environment changes and ground environmental pollution, the iron and manganese indicators in the groundwater exceed the standard, and the turbidity and ammonia nitrogen indicators of some water source wells are seasonal. Exceeding the standard, the existing simple chlorination process can no longer effectively control the pollutants in the raw water, and the existing water plant needs to be rebuilt and expanded. The determination of the reconstruction and expansion plan of the water plant and the engineering design are all completed by the inventor, and the process adopts the above-mentioned invention. Reconstruction and expansion project designed to treat 120,000 m of water 3 / d, water purification treatment structures include aeration reaction tank, air-water backwash filter, biological activated carbon filter,...

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Abstract

The invention discloses a system for synergically removing Fe, Mn and ammonia nitrogen in composite micropolluted source water. For surface water treatment, the system is composed of a mix reaction precipitation system, a chemical assisted oxidation system, an air oxidation system, a filter system and a disinfection system; and for ground water treatment, the system is composed of all the components in the surface water treatment system except the mix reaction precipitation system. The system reasonably and effectively integrates many techniques, such as mass transfer oxygen charging, natural oxidation, chemical oxidation, trapping filtration, physicochemical adsorption, contact catalysis/biological oxidation and the like, and can effectively and synergically remove turbidity, chroma, Fe, Mn and ammonia nitrogen in composite micropolluted source water. The system has the technical advantages of high removal efficiency, high treatment speed, small influence by environmental factors, no side effect, simple operational management and the like, and the economic advantages of low engineering investment and low operating cost; and the system is suitable for design of new water plants, and is easy for implementing upgrading modification of the existing water plants.

Description

technical field [0001] The invention belongs to the technical field of drinking water treatment, and mainly relates to a technical method for synergistic removal of Fe, Mn and ammonia nitrogen in composite micro-polluted water source water, and specifically relates to a composite micro-polluted water source water with technology integration, short process, efficient treatment and complete system Fe, Mn and ammonia nitrogen synergistic removal process. Background technique [0002] In recent years, my country's water pollution has become increasingly serious, and drinking water sources have also been polluted to varying degrees, especially in recent years, the frequent occurrence of composite micro-pollutions such as Fe, Mn, and ammonia nitrogen in drinking water sources across the country has caused a direct threat to the safety of drinking water quality. , and the conventional drinking water purification process has been difficult to ensure the supply of drinking water after...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 黄廷林章武首文刚郭渊孔令勇赵荣戴雪峰
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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