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Study on Application of Multifunctional Compound Microorganism
Product in the Sewage Plant Treatment for Sludge Reduction
Can Wang
*
, Xin Jin, Jilin Teng and Ruozheng Li
Beijing GuoDian FuTong Science & Technology Development Co. Ltd., NARI Group Corporation ,Fengtai Disteict,
Beijing 100070, China.
Email: wangcan0305@aliyun.com
Keywords: Sludge reduction, A
2
/O, sewage plant treatment, microorganism
Abstract: Reducing the quantity of excess sludge has become a popular research subject in wastewater treatment.
Therefore, based on the current sludge reduction theory, some special microbial strains were selected, and
through certain cultivation process, a multiifunctional compound microorganism product was developed to
reduce the sludge quantity. The microorganism product was used in sewage wastewater treatment plant for
pilot test. Five sets of identical equipment with the A
2
/O process and the same operating method were
adopted, and the effect of SV and MLSS were analysed. The effects on sludge reduction were
compared.The results show that the sludge reduction reaches 57.3%. The multifunctional compound
microorganism product improved the effluent quality and the COD, NH
3
-N and TN in the effluent are
37.85mg/L, 0.30mg/L and 12.37mg/L respectively. The microorganism does not require any special
treatment unit, and does not change the original treatment process also. Therefore, the microorganism
product will effectively improve the sludge reduction effect, and reduce the pressure of the sludge disposal
for the wastewater treatment plants.
1 INTRODUCTION
Sludge reduction refers to the physical, chemical
and biochemica l means to minimize the amount of
biosolids discharged from the entire wastewater
treatment system. At present, more attention has
been paid to sludge reduction technology. At the
same time, the research of sludge reduction
technology is also the necessary way to make sludge
harmless and resourceful (Li et al., 2007; He and
Zhou, 2004). In the past ten years, sludge reduction
technology has been focused on improving sludge
containing organic degradation methods such as: 1)
sewage treatment process variant; 2) the
biodegradation of sludge was enhanced by
mechanical, biological, thermal or en zy matic
treatment; 3) sludge stabilizat ion process
modification (Zhang and Hong, 2005; Lin and Guan,
2005). At present, sludge reduction technology
based on uncoupling metabolis m, maintaining
metabolism, bioaugmentation and biological
predation are gradually being applied for the
biological treat ment of wastewater (Wang and Song,
2003; Rensink and Ruckens, 1998). However, there
are still many researchers have done much work on
sludge reduction technology.So far, a feasible
treatment method towards sludge reduction , which
can integrate validuty and environmental security
perfectly, has not been developed yet.
In the process of sludge reduction,
bioaugmentation is the means of reducing sludge by
adding microorganisms with specific functions in
the biological treatment system of sludge (Liang et
al., 2004; Li, 2008). Bioaugmentation technology
has been widely used in many aspects of
environmental protection, such as livestock and
poultry manure deodorizat ion, sewage treat ment,
water eutrophication treatment, domestic waste
treatment and so on, with good results achieved
(Zhang et al., 2008; Yuan et al.. 2007; Neyens et al.,
2004). In this study, a sewage treatment plant with a
treatment capacity of 30000 m
3
/d was used for the
sludge reduction by adding a compound microb ial
preparation. The objective are to investigate the
effect of biological agents on improving effluent
quality of existing treatment systems, and the effect
of sludge reduction.
44
Wang, C., Jin, X., Teng, J. and Li, R.
Study on Application of Multifunctional Compound Microorganism Product in the Sewage Plant Treatment for Sludge Reduction.
In Proceedings of the International Workshop on Environment and Geoscience (IWEG 2018), pages 44-49
ISBN: 978-989-758-342-1
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