Sewage treatment system and sewage treatment method

A sewage treatment system and sewage treatment method technology, applied in the direction of water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of reduced proportion of nitrifying bacteria, incomplete denitrification reaction, Reduce nitrification activity and other problems, achieve stable operation, improve sewage treatment efficiency, save energy consumption and treatment costs

Active Publication Date: 2016-07-13
JURONG SUMITE ENVIRONMENTAL PROTECTION TECH CO LTD
View PDF6 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the traditional A/O method, organic matter and ammonia nitrogen are oxidized at the same time in the aerobic tank, which will lead to: 1. An increase in energy consumption for aeration of oxygen (need to supply oxygen for the oxidation of organic matter and ammonia nitrogen), 2. Heterotrophic aerobic Type bacteria and autotrophic aerobic bacteria (nitrifying bacteria) grow in the same reaction tank, and heterotrophic aerobic bacteria grow predominantly and gradually dominate the sludge, w

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sewage treatment system and sewage treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, the U-type alternating inflow and outflow A / O / A sewage treatment system provided by the present invention includes: the first anaerobic / anoxic tank 3, the first sedimentation tank 5, the aerobic aeration tank 7, and the second sedimentation tank 6 and the second anaerobic / anoxic tank 4. The aerobic aeration tank 7 is U-shaped, and the two ends of the U-shaped aerobic aeration tank 7 are respectively connected to the first sedimentation tank 5 and the second sedimentation tank 6, and the first sedimentation tank 5 is connected to the first anaerobic / anoxic The pool 3 is connected, the second sedimentation tank 6 is connected with the second anaerobic / anoxic tank 4, the first sedimentation tank 5, the first anaerobic / anoxic tank 3 are connected with the second sedimentation tank 6, and the second anaerobic / anoxic tank The pools 4 are symmetrically arranged side by side. In actual construction, the first sedimentation tank 5 and the second sedim...

Embodiment 2

[0046] The sewage treatment method provided by the invention includes periodic water inflow and outflow processes. A processing cycle consists of two half-cycles.

[0047] First half cycle:

[0048] (1) The sewage pretreated by the grid and the grit chamber enters the first anaerobic / anoxic tank 3, and at the same time, the sewage and sludge in the second anaerobic / anoxic tank 4 are partially returned to the second anaerobic / anoxic tank 4 through the sewage return pump An anaerobic / anoxic tank3. This step mainly removes the organic matter in the first anaerobic / anoxic tank 3 . Organic matter is absorbed and transformed into intracellular PHB through the endogenous nitrification reaction of microorganisms, while polyphosphate bacteria absorb volatile acids produced by sewage hydrolysis and acidification under anaerobic conditions to release phosphorus. The volume ratio of the amount of reflux sewage to the total influent of the system, that is, the reflux ratio, is 2 to 4:1,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a sewage treatment technology and particularly relates to a technology for treating low-carbon/nitrogen-ratio sewage on the basis of dominant culture of high-concentration heterotrophic endogenous denitrifying bacteria and autotrophic nitrifying bacteria populations. Specially arranged sedimentation tanks are adopted to prevent dominant growth of heterotrophic microorganisms relative to autotrophic nitrifying bacteria after the heterotrophic microorganisms enter aerobic tanks, so that the autotrophic nitrifying bacteria keep high concentration and high activity, and high-efficiency ammonia-nitrogen nitrification is realized. With adoption of an alternate water inlet and outlet mode, the heterotrophic microorganisms in anaerobic tanks/anoxic tanks convert organic carbon sources into intracellular PHB (poly-beta-hydroxybutyrate) in a first half cycle, intracellular PHB is taken as an electron donor for denitrification in a second half cycle, the limited carbon sources in the sewage are used to the greatest extent for denitrification and are prevented from entering the aerobic tanks and being subjected to oxidation consumption, ammonia nitrogen in the low-carbon/nitrogen-ratio sewage is removed effectively under the condition that an external carbon source is not needed, synchronous nitrification and denitrification are realized, the dephosphorization effect is good, and the technology has good application prospect.

Description

technical field [0001] The invention relates to a treatment technology for sewage, in particular to a technology based on superior cultivation of high-concentration heterotrophic endogenous denitrifying bacteria and autotrophic nitrifying bacteria populations to treat sewage with a low carbon-to-nitrogen (C / N) ratio, which belongs to environmental protection Sewage treatment technology field. Background technique [0002] Water is the source of human life and the foundation of survival. With the development of industrial and agricultural production, water environment problems have become more and more serious, and water quality problems have seriously affected our normal life. Therefore, it is necessary to find effective sewage purification technology to realize the sustainable utilization of water resources. In recent years, people have established many mature and effective sewage treatment methods, such as the activated sludge process in sewage treatment plants in major ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/14C02F101/16
CPCC02F3/302C02F3/34C02F9/00C02F2001/007C02F2101/105C02F2101/16
Inventor 不公告发明人
Owner JURONG SUMITE ENVIRONMENTAL PROTECTION TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap