A PHP Error was encountered

Severity: Warning

Message: file_get_contents(https://...@gmail.com&api_key=61f08fa0b96a73de8c900d749fcb997acc09): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests

Filename: helpers/my_audit_helper.php

Line Number: 143

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 143
Function: file_get_contents

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 209
Function: simplexml_load_file_from_url

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3098
Function: getPubMedXML

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Attempt to read property "Count" on bool

Filename: helpers/my_audit_helper.php

Line Number: 3100

Backtrace:

File: /var/www/html/application/helpers/my_audit_helper.php
Line: 3100
Function: _error_handler

File: /var/www/html/application/controllers/Detail.php
Line: 574
Function: pubMedSearch_Global

File: /var/www/html/application/controllers/Detail.php
Line: 488
Function: pubMedGetRelatedKeyword

File: /var/www/html/index.php
Line: 316
Function: require_once

[Aerobic nitrifying granulation fed with source-separated urine in sequencing batch reactor]. | LitMetric

[Aerobic nitrifying granulation fed with source-separated urine in sequencing batch reactor].

Huan Jing Ke Xue

School of Civil Engineering & Architecture, Beijing Jiaotong University, Beijing 100044, China.

Published: September 2007

Morphological characteristics of aerobic nitrifying granules that were utilized to treat the diluted source-separated urine were investigated in two lab-scale sequencing batch reactors. In the first sequencing batch reactor, which was inoculated with nitrifying bacteria, the COD of effluent was markedly decreased while the nitrification rate was very low. Aerobic nitrifying granules were not appeared in the first bioreactor. In the other SBR system that was inoculated with aerobic granules cultivated in the laboratory, the COD and ammonia in source-separated urine were effectively removed and the removal rate was more than 90%. Under operational condition that influent ammonia volume rate was 0.5 kg/(m3 x d) for 70 days, the aerobic nitrifying granules were stable in the reactor. Aerobic nitrifying granules have well settleability and metabolize activity, the surface of granules was occupied by nitrifying bacillus and cocci bacteria. Contrast to the inoculating aerobic granules, the diameter of aerobic nitrifying granules dramatically decreased to more than 2 mm and the settle velocity were greater than that of aerobic granules which have the same diameter.

Download full-text PDF

Source

Publication Analysis

Top Keywords

aerobic nitrifying
20
nitrifying granules
20
source-separated urine
12
sequencing batch
12
aerobic granules
12
granules
9
aerobic
8
granules diameter
8
nitrifying
7
[aerobic nitrifying
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!