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Waste water biological treatment technology and biological treatment system using same

A biological treatment and waste water technology, applied in the direction of water/sewage multi-stage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc. Large amount of discomfort, complex operation management and other problems, to achieve the effect of increasing effective microbial concentration, saving dosage, and reducing operating costs

Active Publication Date: 2013-08-14
BEIJING GUODIAN FUTONG SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems in the prior art that the amount of adsorbent used in the industrial wastewater treatment process is not suitable for the treatment of high-concentration organic industrial wastewater or the cost of industrial wastewater treatment is high, the process flow is long, the floor area is large, and the operation and management are complicated, and then provide a A biological treatment system for industrial wastewater with less adsorbent consumption, low treatment cost, simple process flow, small footprint, and simple operation and management

Method used

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  • Waste water biological treatment technology and biological treatment system using same
  • Waste water biological treatment technology and biological treatment system using same
  • Waste water biological treatment technology and biological treatment system using same

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Embodiment 1

[0034] Such as figure 1 Shown is a flow chart of a specific implementation of the industrial wastewater biological treatment system of the present invention. (1) The industrial wastewater first passes through the adsorption tank to remove large molecules in the wastewater that are difficult to degrade organics and toxic substances, reducing the impact on the subsequent biochemical system In addition to toxicity inhibition, the adsorbent used is a mixture of excess sludge returned from the aerobic tank and activated coke. (2) The wastewater after adsorption treatment enters the biochemical system. In this embodiment, the wastewater passes through a hydrolysis acidification tank, an anoxic tank, and an aerobic tank for biological treatment. Add activated coke to the aerobic tank to strengthen the degradation performance of aerobic microorganisms on the organics in the wastewater, and ensure the stable and up-to-standard discharge of the effluent. The mass concentration of the adso...

Embodiment 2

[0037] The process flow of this embodiment is the same as figure 1 The process flow shown is the same. (1) The industrial waste water first passes through the adsorption tank to remove the large molecules in the waste water that are difficult to degrade organics and toxic substances, reducing the impact on the subsequent biochemical system and toxicity inhibition. The adsorbent used is an aerobic tank Mixture of recirculated surplus sludge and activated coke. (2) The wastewater after adsorption treatment enters the biochemical system. In this embodiment, the wastewater passes through the hydrolysis acidification tank, the anoxic tank, and the aerobic tank for biological treatment. The activated coke is added to the aerobic tank to strengthen The degradation performance of the aerobic microorganisms on the organic matter in the wastewater ensures the stable discharge of the effluent water quality. The mass concentration of the adsorbent in the aerobic tank is 50mg / L (that is, the...

Embodiment 3

[0040] Such as figure 2 As shown, (1) The industrial wastewater first passes through the adsorption tank to remove the large molecules in the wastewater that are difficult to degrade organics and toxic substances, reducing the impact on the subsequent biochemical system and toxicity inhibition. The adsorbent used is the remaining sewage returned from the aerobic tank. A mixture of mud and lignite. (2) The wastewater after adsorption treatment enters the AO system, that is, the wastewater passes through an anoxic tank and an aerobic tank for biological treatment. Add lignite to the aerobic tank to strengthen the degradation performance of aerobic microorganisms on the organics in the wastewater, and ensure the stable and up-to-standard discharge of the effluent. The mass concentration of the adsorbent in the aerobic tank is 2000mg / L (that is equivalent to the wastewater in the aerobic tank The mass ratio to adsorbent is 500:1). The nitrification liquid in the aerobic tank is r...

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Abstract

The invention discloses a waste water biological treatment technology. After passing through a pretreatment unit, waste water enters an aerobiotic unit for aerobic treatment under the action of a first adsorbent and activated sludge, then the mixture of the activated sludge and the first adsorbent is obtained; and the mixture flows back to the pretreatment unit and is taken as the adsorbent of the pretreatment unit for pretreatment of the waste water, wherein the mass concentration of the first adsorbent in the aerobiotic unit is between 50mg / L and 2000mg / L. The invention further provides an industrial waste water biological treatment system which comprises the pretreatment unit and a biochemical treatment unit, wherein the pretreatment unit comprises an adsorption pool, the biochemical treatment unit comprises an aerobiotic pool, the first adsorbent is added into the aerobiotic pool, and the mixture of the first adsorbent and the activated sludge in the aerobiotic pool is recycled by the adsorption pool. The amount of the adsorbent used by the industrial waste water biological treatment technology and the system is less, the treatment cost is low, the technology process is simple, the floor area is small, and the operation and management are simple.

Description

Technical field [0001] The invention relates to a wastewater treatment process, in particular to a biological treatment process of industrial wastewater and a biological treatment system using the process, and belongs to the field of sewage treatment. Background technique [0002] Industrial waste water refers to the waste water, sewage and waste liquid produced in the industrial production process, which contains industrial production materials, intermediate products and products that are lost with water, and pollutants generated in the production process. With the rapid development of industry, the types and quantities of waste water have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. Therefore, for environmental protection, the treatment of industrial wastewater is more important than the treatment of urban sewage. [0003] In the prior art, Chinese Patent Document CN1454852A discloses a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/28
Inventor 姜艳
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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