Biological treatment of drippers clogged by the use of treated domestic wastewater

Costa, Danniely O.; Batista, Rafael O.; Vale, Hudson S. M.; Sousa, Amanda B. de; Dombroski, Solange A. G.; Alves, Sandra M. C.

doi:10.1590/1807-1929/agriambi.v20n7p595-599

Danniely O. Costa

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

Rafael O. Batista rafaelbatista@ufersa.edu.br (Corresponding author)

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

Hudson S. M. Vale

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

Amanda B. de Sousa

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

Solange A. G. Dombroski

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

Sandra M. C. Alves

Universidade Federal Rural do Semi-Árido/Departamento de Ciências Ambientais e Tecnológicas. Mossoró, RN. E-mail: danniely_oliveira@hotmail.com; rafaelbatista@ufersa.edu.br (Corresponding author); klaus_angel@hotmail.com; amandabez12@yahoo.com.br; solangedombroski@ufersa.edu.br; sandraalves@ufersa.edu.br

rafaelbatista@ufersa.edu.br (Corresponding author)

D	M	PD^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	Q^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively; (L h^-1)	k^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	x^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	A (mm²)	L (mm)	CV_m^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively; (%)	P^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively; (kPa)	SE^* * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively; (m)
D1	Plastro Hydrodrip Super	No	1.65	0.53	0.48	04.0^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	37^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	± 5	060 - 150	0.30
D2	Netafim Tiran	No	2.00	0.69	0.46	70.0^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	75^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	± 7	100 - 300	0.40
D3	Netafim PCJ-CNJ^# # - CNJ - anti-drain system	Yes	2.00	2.00	0.00	02.0^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	35^** * and ** - information obtained in the catalogs of the manufacturers and infor mation measured with a digital caliper with precision of 0.01 m m, respectively;	± 7	050 - 400	0.70

Source of variation	Degrees of freedom	Mean square
Source of variation	Degrees of freedom	Q	RQR
Doses of the products (DOS)	3	0.028^ns ns Not significant at 0.05 probability level by F test	38.85^ns ns Not significant at 0.05 probability level by F test
Residue (a)	6	0.027	92.98
Applied treatments (T)	2	0.81^ and * - Significant at 0.01 and 0.05 probability levels, respectively;	2310.56^ and * - Significant at 0.01 and 0.05 probability levels, respectively;
DOS x T	6	0.049^ns ns Not significant at 0.05 probability level by F test	19.03^ns ns Not significant at 0.05 probability level by F test
Residue (b)	16	0.011	32.31
Types of drippers (D)	2	5.10^ and * - Significant at 0.01 and 0.05 probability levels, respectively;	4995.07^ and * - Significant at 0.01 and 0.05 probability levels, respectively;
DOS x D	6	0.016^ns ns Not significant at 0.05 probability level by F test	124.61^* ** and * - Significant at 0.01 and 0.05 probability levels, respectively;
T x D	4	0.059^ and * - Significant at 0.01 and 0.05 probability levels, respectively;	128.61^ns ns Not significant at 0.05 probability level by F test
DOS x T x D	12	0.0076^ns ns Not significant at 0.05 probability level by F test	25.83^ns ns Not significant at 0.05 probability level by F test
Residue (c)	50	0.016	52.77
CV (%) plot		10.47	60.72
CV (%) subplot		6.75	35.79
CV (%) sub-subplot		8.04	45.75

Q (L h^-1)*				RQR (%)*
D	T			D	DOS (mg L^-1)
D	T1	T2	T3	D	80	160	240	320
D1	1.00 cC	1.13 bB	1.25 aB	D1	34.89 aA	27.78 aA	23.78 aA	27.11 aA
D2	1.69 bA	1.85 aA	1.90 aA	D2	02.33 aC	06.11 aB	07.67 aB	03.89 aC
D3	1.48 bB	1.85 aA	1.88 aA	D3	15.33 aB	11.67 aB	16.56 aA	13.44 aB

Combinations	Specifications	Regression equations	R²
1	D1 x T2	Q̂ =1.018 + 0.000538^* ** and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS	0.94
2	D2 x T2	Q̂ = Q̅ = 1.851	-
3	D3 x T2	Q̂ = Q̅ = 1.845	-
4	D1 x T3	Q̂ = Q̅ = 1.253	-
5	D2 x T3	Q̂ = Q̅ =1.896	-
6	D3 x T3	Q̂ = Q̅ = 1.880	-
1	D1 x T2	RQ̂R = 37.500 - 0.0458^ and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS	1.00
2	D2 x T2	RQ̂R = -22.097 + 3.889^* ** and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS^0.5 - 0.141^* ** and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS	0.99
3	D3 x T2	RQ̂R = RQ̅R = 8.833	-
4	D1 x T3	RQ̂R = RQ̅R = 20.333	-
5	D2 x T3	RQ̂R = -8.833+ 0.104^* ** and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS- 0.000234^* ** and * - Significant at 0.01 and 0.05 probability levels by t- test, respectively DOS²	1.00
6	D3 x T3	RQ̂R = RQ̅R = 7.167	-

[1] rafaelbatista@ufersa.edu.br (Corresponding author)

Brasil

Brasil

Biological treatment of drippers clogged by the use of treated domestic wastewater

Tratamento biológico de gotejadores obstruídos pelo uso de efluente doméstico tratado

ABSTRACT