DRIPPER-CLOGGING FACTORS IN WASTE-WATER IRRIGATION

被引：96

作者：

ADIN, A

SACKS, M

机构：

[1] Envir. Sci. Div, Grad. School Appl. Sci. and Tech, The Hebrew Univ. of Jerusalem, Jerusalem

[2] Ministry of Agric, Lachish Extension Service Bureau, South Lachish Post

来源：

JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING | 1991年 / 117卷 / 06期

关键词：

D O I：

10.1061/(ASCE)0733-9437(1991)117:6(813)

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Wastewaters that have undergone treatment and are stored in open reservoirs frequently cause clogging problems while being applied through drip-irrigation systems. This study is aimed at defining the clogging factors and mechanisms of blockage within three types of drippers as a basis for developing technical measures to overcome the problem. The relevant effluent constituents are defined and physical and chemical properties of the deposits in hundreds of emitters are examined, using both field and laboratory experiments. A gradual clogging mechanism is proposed: The sediment buildup begins with the deposition of amorphous slimes, to which other particles adhere. The clogging rate is more affected by particle size than by particle-number density. The chemical composition of the deposits in the dripper changes with the season. Filtration prevents immediate clogging by large particles. Clogging potential may be decreased by modifying the emitter structure and by chemical pretreatment.

引用

页码：813 / 826

页数：14

共 22 条

[1]

Adin A., Clogging phenomenon in irrigation systems reusing pond effluents and its prevention, Proc. International Conference on Waste Stabilization Ponds, (1987)

[2]

Adin A., Problems associated with particulate matter in water reuse for agricultural irrigation and their prevention, Water Sci. and Tech, 18, pp. 185-195, (1987)

[3]

Adin A., Alon G., Mechanisms and process parameters of filter screens, J. Irrig. and Drain. Engrg, 122, 4, pp. 293-304, (1986)

[4]

Adin A., Elimelech M., Particle filtration for wastewater irrigation, J. of Irrig. and Drain. Engrg, 115, 3, pp. 474-487, (1989)

[5]

Adin A., Rubinstein L., Particle characterization in wastewater effluents in relation to filtration and irrigation, Filtration and Separation, pp. 284-287, (1989)

[6]

Ben-Harim L., Steinhauer Z., A new filtrability test for water quality control, Environmental quality and ecosystem stability, (1983)

[7]

Bucks D.A., Nakayama F.S., Gilbert R.G., Trickle irrigation water quality and preventive maintenance, Agric. Water Mgmt, 2, 2, pp. 149-162, (1979)

[8]

Bucks D.A., Nakayama F.S., Warrick A.W., Principles, practices and potentialities of trickle irrigation, Advances in irrigation, pp. 219-298, (1982)

[9]

Dor I., Schechter H., Bromley H.J., Limnology of a hypertrophic reservoir storing wastewater effluent for agriculture at kibbutz Naan, Israel, Hydrobiologia, 150, pp. 225-241, (1987)

[10]

Engliah D., Filtration and water treatment for micro-irrigation, Proc. of the Third Int. Drip/Trickle Irrigation Congress, 1, pp. 50-57, (1985)

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