Supercharge Your Innovation With Domain-Expert AI Agents!

Method for judging and treating anaerobic particle sludge poisoning

A technology of sludge and sludge granules, which is applied in the direction of sludge treatment, anaerobic digestion treatment, chemical instruments and methods, etc., can solve the problem of inaccurate judgment methods, inaccurate response to anaerobic granular sludge poisoning, and difficult Realization and other issues, to achieve the effect of shortening the processing cycle, shortening the granulation process, and shortening the start-up time

Active Publication Date: 2019-05-10
SHANYING INT HLDG CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the anaerobic particle poisoning methods commonly used in the prior art are generally judged from indicators such as COD removal rate, volatile fatty acid content in effluent, pH value, and methane gas production. Affected by the nature of the treated sludge itself, the judgment method is inaccurate; at the same time, because methane is only produced in the methanation stage, but not in the hydrolysis acidification stage and acetic acidification stage, it cannot accurately reflect the anaerobic granular sludge. poisoning

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
  • Method for judging and treating anaerobic particle sludge poisoning
  • Method for judging and treating anaerobic particle sludge poisoning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) In the anaerobic reactor of the papermaking sewage treatment system (the volume specification of the IC anaerobic reactor is 2200m 3 , the following embodiments are all the same) the gas outlet is connected to a carbon dioxide detector to detect the amount of carbon dioxide produced;

[0041] (2) When the carbon dioxide flow is unstable and the pH value of the reactor outlet changes, the poisoned and rancid sludge is discharged from the sludge discharge valve at the bottom of the reactor;

[0042] (3) Stop the water intake, and introduce 15% of the normal granular sludge of the effective volume of the reactor;

[0043] (4) Control the water intake to 150m 3 / h and strengthen the reflux cycle;

[0044] (5) The ascending velocity in the control reactor is 5m / h;

[0045] (6) Add the cationic polyacrylamide of 30mg / L every two days in the anaerobic reactor;

[0046] (7) When the COD removal rate is 80%, the FeCl of 0.5mg / L 2 added to the reactor;

[0047] (8) Dete...

Embodiment 2

[0049] (1) Connect a carbon dioxide detector to the gas outlet of the anaerobic reactor of the papermaking sewage treatment system to detect the amount of carbon dioxide produced;

[0050] (2) When the carbon dioxide flow is unstable and the pH value of the reactor outlet changes, the poisoned and rancid sludge is discharged from the sludge discharge valve at the bottom of the reactor;

[0051] (3) Stop the water intake, and introduce 10% normal granular sludge of the effective volume of the reactor;

[0052] (4) Control the water intake to 100m 3 / h and strengthen the reflux cycle;

[0053](5) The ascending velocity in the control reactor is 4m / h;

[0054] (6) in the anaerobic reactor, add once every two days the polyaluminum chloride of 10mg / L;

[0055] (7) When the COD removal rate is 90%, the NiCl of 0.2mg / L 2 added to the reactor;

[0056] (8) Detect the gas output of methane, meet the normal operating conditions, and complete the treatment process.

Embodiment 3

[0058] (1) Connect a carbon dioxide detector to the gas outlet of the anaerobic reactor of the papermaking sewage treatment system to detect the amount of carbon dioxide produced;

[0059] (2) When the carbon dioxide flow is unstable and the pH value of the reactor outlet changes, the poisoned and rancid sludge is discharged from the sludge discharge valve at the bottom of the reactor;

[0060] (3) stop water intake, introduce 20% normal granular sludge of reactor effective volume;

[0061] (4) Control the water intake to 200m 3 / h and strengthen the reflux cycle;

[0062] (5) The ascending velocity in the control reactor is 6m / h;

[0063] (6) Add cationic polyacrylamide of 25mg / L and 25mg / L polyaluminum chloride every two days in the anaerobic reactor;

[0064] (7) When the COD removal rate is 95%, the FeCl of 0.5mg / L 2 and 0.5mg / L NiCl 2 added to the reactor;

[0065] (8) Detect the gas output of methane, meet the normal operating conditions, and complete the treatment...

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 belongs to the field of sewage treatment, and particularly relates to a method for judging and treating anaerobic particle sludge poisoning. A detection method combining carbon dioxide and pH value is adopted, poisoned sludge is timely treated when carbon dioxide and pH value change, and a sludge granulation promoter and inorganic salt are added after normal particle sludge is added,so that sludge particle activity is improved. By the process, methane generating activity of bio-particles is improved, granulation progress is shortened, starting time of an anaerobic reactor is shortened, and anaerobic sludge consumption is reduced.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a method for judging and treating anaerobic granular sludge poisoning. Background technique [0002] In recent years, with the vigorous development of the manufacturing industry, there are more urban sewage, and some organic wastewater COD is as high as 3000mg / L or more. The original activated sludge method is not suitable for this kind of wastewater treatment. The wastewater in the middle stage of kraft pulping belongs to low-concentration wastewater, and its COD is generally lower than 1000mg / L. It does not need to be pretreated by anaerobic method, and the wastewater generated in the kraft pulping process contains sulfides, organic halides and chloride ions Such substances have toxic effects on anaerobic bacteria, which will inactivate a large amount of anaerobic granular sludge, and are not suitable for anaerobic treatment. According to literature reports, Fujian Nanzhi Compa...

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): C02F3/34C02F3/28C02F11/00C02F11/148
CPCY02E50/30
Inventor 占正奉方敏陈学萍高晋宋杰曲雪璟
Owner SHANYING INT HLDG CO LTD
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