Sequential process for biologically treating water implementing biomass granules

A technology of biomass and pellets, applied in biological water/sewage treatment, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve the problems of increasing the size of water treatment equipment and cost of water treatment, and achieve high stability , improve the removal effect

Inactive Publication Date: 2014-03-05
VEOLIA WATER SOLUTIONS & TECH SUPPORT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This tends to increase the size of the water treatment equipment as well as the cost of water treatment

Method used

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  • Sequential process for biologically treating water implementing biomass granules
  • Sequential process for biologically treating water implementing biomass granules

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Experimental program
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Embodiment Construction

[0094] 7. Description of Embodiments of the Invention

[0095] 7.1. Review of the general principles of the invention

[0096] The general principle of the present invention is to treat water by biological means in such a way that said water is rapidly introduced into a reactor in an anaerobic supply phase, where it comes into contact with biomass pellets. The water therein then goes through the following anaerobic successive stages: agitation of the contents of the reactor, aeration, and rapid settling. Finally the treated water is withdrawn from the reactor.

[0097] 7.2. Examples of water treatment plants for carrying out the method of the invention

[0098] refer to figure 1 , which shows a water treatment plant for carrying out the method of the invention.

[0099] As shown, a plant of this type comprises an inlet pipe 10 for the water to be treated, the outlet of which is connected to the inlet of a T-joint 12 . A valve 11 is installed on the pipe 10 .

[0100] The...

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Abstract

The invention relates to a process for treating wastewater containing organic matter within a reactor accommodating biomass granules and provided with aeration means. According to the invention, such a process includes a plurality of consecutive cycles, each of which include: an anaerobic step of feeding wastewater into said reactor, during which said water is mixed with said granules so as to form a fluidized bed; an anaerobic step of stirring the contents of said reactor; a step of aerating the contents of said reactor; a settling step; and a step of discharging treated water free of organic matter.

Description

technical field 1. Field of the invention [0001] The field of the invention is that of the biological treatment of wastewater comprising organic matter. [0002] More specifically, the present invention relates to sequential biological treatment of water using biomass granules. Background technique [0003] 2. Existing technology [0004] Carbon and nitrogen pollutants contained in water and especially wastewater are usually reduced by means of biological treatment, such as sequential biological treatment. [0005] Sequential biological treatment of water consists in treating large volumes of water by bringing them into contact in successive sections with biomass contained in reactors. This type of reactor is called SBR, corresponding to the English Sequenced Batch Reactor (sequence batch reactor). [0006] The biomass degrades carbon pollutants in the aerobic phase. Ammonia is converted to nitrite by nitrification in this aerobic phase, while nitrate is degraded to ni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F3/12
CPCC02F3/308C02F3/301C02F3/1263Y02W10/10
Inventor K·索伦森
Owner VEOLIA WATER SOLUTIONS & TECH SUPPORT
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