Check patentability & draft patents in minutes with Patsnap Eureka AI!

Biochemical treatment method for nitrogen and phosphorus in sewage

A biochemical treatment and sewage technology, applied in water/sewage treatment, biological water/sewage treatment, water/sewage multi-stage treatment, etc. Cost-saving and effect-enhancing effects

Inactive Publication Date: 2018-12-21
上海坤工环境科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to solve the contradiction of sludge age in the process of biological nitrogen and phosphorus removal and the problem that the removal rate is difficult to increase, and to further improve the removal rate of nitrogen and phosphorus

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
  • Biochemical treatment method for nitrogen and phosphorus in sewage
  • Biochemical treatment method for nitrogen and phosphorus in sewage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, the treatment adopted in the nitrogen and phosphorus biochemical treatment method in sewage of the present invention includes a pretreatment tank, a biochemical reaction tank, a secondary sedimentation tank, a phosphorus crystallization tank and a phosphorus crystallization tank b.

[0015] The treatment process includes the following steps. First, the sewage is passed into the pretreatment tank for preliminary treatment; then the pretreated sewage is passed into the biochemical reaction tank. The biochemical reaction tank includes an anaerobic section and an aerobic section. The sludge contains nitrifying bacteria and phosphorus accumulating bacteria. The sludge in the anaerobic section contains phosphorus accumulating bacteria, and the sludge in the anoxic section contains denitrifying bacteria. The internal...

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 discloses a biochemical treatment method for nitrogen and phosphorus in sewage. The biochemical treatment method comprises the following steps: firstly, sending sewage into a pretreatment tank to be primarily treated; then sending the pretreated sewage into a biochemical reaction tank, wherein the biochemical reaction tank comprises an anaerobic section and an aerobic section, sludgeof the aerobic section contains nitrifying bacteria and polyphosphate accumulating bacteria, sludge of the anaerobic section contains polyphosphate accumulating bacteria, and sludge of an anoxic section contains denitrifying bacteria. A reflux system in the biochemical reaction tank is applied to nitrification liquid reflux, a phosphorus crystal a tank is arranged in the reflux system, and furthermore, a complex reagent is added into the reflux system to be used for promoting phosphate crystallization separation. By means of adding the complex reagent, contradiction in a biological nitrogen and phosphorus removal process is eliminated, and phosphorus is removed in high efficiency; aiming at removal effects of different effluent standards, cost can be reduced by controlling the reaction rate of the complex reagent in the sewage; meanwhile, an auxiliary reagent also can be added to further enhance an nitrogen and phosphorus removal effect.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biochemical treatment method for nitrogen and phosphorus in sewage. Background technique [0002] With the dual guidance of the national water treatment industry policy and the market, the overall upgrading of sewage treatment has become one of the focuses of the sewage treatment industry. Many large and medium sewage treatment stations have undergone standard upgrading and transformation, and a large number of small sewage treatment stations in villages and towns have emerged , my country's sewage treatment capacity and discharge standards have reached unprecedented heights. However, some problems gradually appeared in the process of standard upgrading and transformation, such as: the effluent water quality index is unstable, and the removal rate of nitrogen and phosphorus is difficult to increase. [0003] In the aerobic section of the sewage treatment process, nitri...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/16C02F101/10
CPCC02F1/5254C02F3/30C02F3/34C02F2101/105C02F2101/16
Inventor 曹国勇赵浩然王海阳
Owner 上海坤工环境科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com