Obdelava odpadnih vod v anaerobnem reaktorju

diplomsko delo univerzitetnega študijskega programa

Tanja Krojzl (Author), Marjana Simonič (Mentor), Lidija Fras Zemljič (Co-mentor), Karli Udovičič (Co-mentor)

Abstract

V diplomskem delu smo obravnavali anaerobni proces čiščenja kompostne odpadne vode. Sestava kompostnih vod se zelo spreminja in je odvisna od sestave odpadkov, tehnike kompostiranja in od zrelosti komposta. Ker vsebujejo kompostne vode suspendirane in raztopljene snovi iz kompostnega kupa, je uporaba anaerobnega reaktorja zelo primerna. Prednosti anaerobnega čiščenja so visoka stopnja čiščenja, sposobnost čiščenja pri visokih obremenitvah, produkcija majhne količine odvečnega blata in produkcija metana kot končnega produkta. Cilj diplomskega dela je določiti fizikalne in kemijske parametre kompostne odpadne vode, proizvodnjo plinov metana in CO2 ter na podlagi dobljenih meritev in s pomočjo potrebnih parametrov načrtovati reaktor. Pri eksperimentalnem delu diplomskega dela uporabimo standardizirane analizne metode. Pri kompostni odpadni vodi določimo fizikalne (vrednost pH, absorbanco, prevodnost, motnost, alkalnost) in kemijske karakteristike (kemijsko potrebo po kisiku (KPK), skupni dušik, skupni fosfor, skupne suspendirane snovi). Prikazan je postopek načrtovanja reaktorja pri dveh različnih pretokih. Pri pretoku 10 m3/d je zadrževalni čas 10 dni, za kar je potreben reaktor s premerom 0,73 m. Pri pretoku 1 m3/d je zadrževalni čas enak, vendar zadostuje reaktor s premerom 0,23 m. Po izračunih bi moralo pri pretoku 10 m3/d nastati 267,3 m3/d metana. Pri poskusih smo uporabili posebno vrsto bakterij, zato metan ni nastajal.

Keywords

kompostna voda;anaerobni reaktor;zadrževalni čas;pretok;metan;

Data

Language:	Slovenian
Year of publishing:	2014
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FKKT - Faculty of Chemistry and Chemical Engineering
Publisher:	[T. Krojzl]
UDC:	628.16.098:66.098.4(043.2)
COBISS:	17858838
Views:	1512
Downloads:	219
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	WASTEWATER TREATMENT USING ANAEROBIC SUSPENDED GROWTH REACTOR
Secondary abstract:	In the thesis the process of cleaning compost wastewater was discussed. The composition of compost water varies widely and depends on the composition of the waste, composting techniques and the maturity of compost. The wastewater contains suspended and dissolved substances from the compost pile. One of the promising alternatives for wastewater treatment is the use of an anaerobic reactor, since it is suitable for water with high concentrations of suspended solids. The advantages of the anaerobic purification are high cleaning efficiency, the cleaning ability of the high loads, the production of small quantities of sewage sludge and the production of methane as a final product. The aim of this thesis was to determine the physical and chemical parameters of the compost wastewater and on the basis of the obtained measurements and to design the reactor using the necessary parameters. The aim of the thesis was to found out how much gases can be produced, specifically methane and CO2, which is shown by detailed calculations. In the experimental part of the thesis the standardized analytical methods were used, where physical (pH, absorbance, conductivity, turbidity, alkalinity) and chemical characteristics (chemical oxygen demand (COD), total nitrogen, total phosphorus, total suspended matter) were determined. The thesis presents designing process of the reactor with two different flows. At a flow-rate of 10 m3/d, the retention time was 10 days, which requires a reactor having a diameter of 0.73 m. At a flow-rate of 1 m3/d the retention time remained the same, but reactor with a diameter of 0.23 m was already sufficient. The calculations showed that at flow-rate of 10 m3/d should arise 267.3 m3/d of methane. The results indicated that no methane was produced, the bacteria were added, which inhibited the formation of methane.
Secondary keywords:	compost wastewater;anaerobic reactor;retention time;flow-rate;methane;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za kemijo in kemijsko tehnologijo
Pages:	X, 51 str.
ID:	8729350