scholarly journals Algorithm of the calculation of technological for several objects of technological standardization

2021 ◽  
Author(s):  
М.А. Епифанова ◽  
А.В. Епифанов ◽  
Э.Л. Аким
Keyword(s):  
Wastewater Treatment ◽  
Negative Impact ◽  
Balance Sheet ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Functional Dependencies ◽  
Pulp And Paper Mill ◽  
Calculation Algorithm ◽  
Treatment Facilities ◽  
The Masses

Цель исследования – разработка алгоритма расчета технологических показателей отдельно по видам выпускаемой продукции для интегрированного целлюлозно-бумажного комбината при сбросе сточных вод после очистки сточных вод на единых очистных сооружениях промышленных стоков. Использован балансовый метод расчёта значений масс загрязняющих веществ, образующихся на тонну выпускаемой продукции ЦБК на основе масс загрязняющих веществ, образующихся во вспомогательных технологических процессах, с учетом очистки сточных вод на общепроизводственных очистных сооружениях. Технологические показатели установлены отдельно для продукции, нормируемой по беленой или небеленой целлюлозе. Если фактические значения технологических показателей превысят значения технологических показателей НДТ, то необходимо разработать водоохранные мероприятия по достижению этих показателей и, до момента их достижения, оплачивать негативное воздействие на водные объекты со стократным повышающим коэффициентом. Разработан алгоритм и функциональные зависимости расчета технологических показателей для ЦБК, выпускающих продукцию, содержащую в композиции беленую и небеленую целлюлозу. Алгоритм рассмотрен на примере условного ЦБК, выпускающего первичные небелёные и беленые волокнистые полуфабрикаты и продукцию полного цикла. К первичным волокнистым полуфабрикатам небеленым отнесены: хвойная и лиственная целлюлоза, ТММ, ХТММ; к первичным волокнистым беленым полуфабрикатам отнесены: беленая хвойная и лиственная целлюлоза, БХТММ; к продукции полного цикла отнесены бумага, картон и продукция их переработки. Алгоритм расчета состоит из пяти этапов: 1 – построение балансовой схемы расчета технологических показателей; 2 – расчет технологических показателей для первичных волокнистых полуфабрикатов небеленых; 3 – расчет технологических показателей для первичных волокнистых полуфабрикатов беленых; 4 – расчет технологических показателей для продукции полного цикла; 5 – расчет значений технологических показателей для каждого вида продукции с учетом очистки на общепроизводственных очистных сооружениях. The purpose of the study is to develop an algorithm for calculating technological indicators separately by types of products for an integrated pulp and paper mill when discharging wastewater after wastewater treatment at unified industrial wastewater treatment plants. A balance method was used for calculating the values of the masses of pollutants formed per ton of output from the pulp and paper mill based on the masses of pollutants formed in auxiliary technological processes, taking into account wastewater treatment at general industrial treatment facilities. Technological indicators are set separately for products rated for bleached or unbleached pulp. If the actual values of technological indicators exceed the values of technological indicators BAT, then it is necessary to develop water protection measures to achieve these indicators and, until they are reached, to pay for the negative impact on water bodies with a hundredfold increasing coefficient. An algorithm and functional dependencies for calculating technological indicators for pulp and paper mills producing products containing bleached and unbleached cellulose in the composition have been developed. The algorithm is considered on the example of a conventional pulp and paper mill, which produces primary unbleached and bleached fibrous semi-finished products, and full-cycle products. Primary unbleached fibrous semi-finished products include: coniferous and deciduous cellulose, ТМP, CТМP; primary fibrous bleached semi-finished products include: bleached softwood and hardwood pulp, BCTMP; full cycle products include: paper, cardboard and their processing products. The calculation algorithm consists of five stages: 1 – building a balance sheet for calculating technological indicators; 2 – calculation of technological indicators for primary fibrous semi-finished products, unbleached; 3 – calculation of technological indicators for primary fibrous semi-finished products bleached; 4 – calculation of technological indicators for full cycle products; 5 – calculation of the values of technological indicators for each type of product, taking into account cleaning at general production treatment facilities.

The Use of Enzymes for Wastewater Treatment in the Pulp and Paper Industry – A New Possibility

1988 ◽  
Vol 20 (1) ◽  
pp. 251-262 ◽  
Author(s):  
R. Hakulinen
Keyword(s):  
Wastewater Treatment ◽  
Lignin Degradation ◽  
Paper Industry ◽  
Paper Mill ◽  
Pulp And Paper Industry ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Research Activity ◽  
Paper Mill Waste ◽  
Mill Waste

Biological systems have been employed successfully for manv years in the treatment of pulp and paper mill waste water. Previously, not very much was known about enzymes and their possibilities in pulp and paper industry wastewater treatment. There is currently a lot of research activity in the enzymology of lignin degradation. Ligninase, cellulase, peroxidase, etc. are the most important enzymes, especially peroxidase, which is used for color removal in bleaching effluents. It is also possible to mix enzymes together with special microbes, which normally do not have high enzvme activity, and remove recalcitrant and harmless compounds from wastewater. The use of novel enzymes and rDNA technology in sludge and wastewater treatment will also be discussed.

Molecular characterization of microbial communities in Canadian pulp and paper activated sludge and quantification of a novelThiothrix eikelboomii-like bulking filament

2006 ◽  
Vol 52 (5) ◽  
pp. 494-500 ◽  
Author(s):  
Tim J Dumonceaux ◽  
Janet E Hill ◽  
Carl P Pelletier ◽  
Michael G Paice ◽  
Andrew G Van Kessel ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Microbial Community ◽  
Activated Sludge ◽  
Type Strain ◽  
Suspended Solids ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Chaperonin 60 ◽  
Paper Mill Wastewater

We examined the microbial community structure and quantified the levels of the filamentous bulking organism Thiothrix eikelboomii in samples of activated sludge mixed liquor suspended solids (MLSS) from Canadian pulp and paper mills. Libraries of chaperonin 60 (cpn60) gene sequences were prepared from MLSS total microbial community DNA and each was compared with cpnDB, a reference database of cpn60 sequences (http://cpndb.cbr.nrc.ca) for assignment of taxonomic identities. Sequences similar to but distinct from the type strain of T. eikelboomii AP3 (ATCC 49788T) (~89% identity over 555 bp) were recovered at high frequency from a mill sample that was experiencing bulking problems at the time of sample collection, which corresponded to microscopic observations using fluorescent in situ hybridization with commercially available 16S rDNA-based probes. We enumerated this strain in five mill-derived MLSS samples using real-time quantitative PCR (qPCR) and found that two samples had high levels of the bulking strain (>1012genomes/g MLSS) and two contained lower but detectable levels of this organism. None of the mill samples contained cpn60 sequences that were identical to the type strain of T. eikelboomii. This technique shows promise for monitoring pulp and paper mill wastewater treatment systems by detecting and enumerating this strain of T. eikelboomii, which may be specific to pulp and paper mill wastewater treatment systems.Key words: activated sludge, biological treatment, bulking; chaperonin 60, cpn60, filamentous bacteria, mixed liquor suspended solids, microbial communities, 021N, qPCR, settling, Thiothrix.

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