Application of selected industrial engineering techniques to wastewater treatment plants,

"EPA-R2-73-176."

Onsite wastewater treatment and disposal systems.

Mode of access: Internet.

Energy conservation and utilization : a handbook for wastewater treatment plants in Illinois /

"September 1991."

On-site wastewater treatment and disposal systems (environmental and health effects) /

Bibliography: p. 222-229.

Relative effects of chlorine and ammonia from wastewater treatment facilities on stream biota /

Project no.: 83/2002.

Technology assessment of wastewater treatment alternatives for compliance with deoxygenating wastes effluent standards : final report /

"Project 87/7012."

Water Pollution Control Loan Program : low interest wastewater treatment financing.

Description based on: 2000 edition.

Efficient investments in wastewater treatment plants.

Item 1005-C

Joint municipal and industrial wastewater treatment in rural communities : simulation analysis with poultry processing plants /

Issued Mar. 1980.

Final environmental impact statement : wastewater treatment facilities, South Shore Lake Tahoe Basin /

"May 1981."

Wastewater treatment systems for safety rest areas /

Mode of access: Internet.

Municipal wastewater treatment works construction grants program : references, regulations, guidance, procedures : Supplement 2.

"November 1976."

Municipal wastewater treatment construction grants program : hearings before the Subcommittee on Environmental Pollution of the Committee on Environment and Public Works, United States Senate, Ninety-seventh Congress, first session, on S. 975 ... and S. 1274.

"Serial no. 97-H17."

Biotechnological production of lactic acid integrated with potato wastewater treatment by Rhizopus arrhizus

This paper describes a feasibility study of a for lactic acid production integrated with are treatment of wastewater from an industrial starch plant. Rhizopus oryzae two strains, Rhizopus arrhizus and Rhizopus oligosporus were tested with respect to their capability to carry out simultaneous saccharification and fermentation to lactic acid using potato wastewater. Rhizopus arrhizus DAR 36017 was identified as a suitable strain that demonstrated a high capacity for starch saccharification and lactic acid synthesis. The optimal conditions, in terms of pH, temperature and starch concentration, for lactic acid production were determined. The selected fungal strain grew well in a pH range from 3.0 to 7.0. The addition of CaCO(3)10 g dm(-3) maintained the pH at 5.0-6.0 and significantly enhanced lactic acid production. Kinetic study revealed that almost complete starch saccharification and a lactic acid yield of 450g kg(-1) could be achieved in 20 h and 28 h cultivation, respectively. The maximum lactic acid production 21 g dm(-3) and mycelial biomass (1.7 g dm(-3)) were obtained at 30degreesC. Besides the multiple bioproducts, total removal of suspended solids and 90% reduction of COD were achieved in a single no-aseptic operation. (C) 2003 Society of Chemical Industry.

Kinetic model for selective cultivation of microfungi in a microscreen process for food processing wastewater treatment and biomass production

The research was aimed at developing a technology to combine the production of useful microfungi with the treatment of wastewater from food processing. A recycle bioreactor equipped with a micro-screen was developed as a wastewater treatment system on a laboratory scale to contain a Rhizopus culture and maintain its dominance under non-aseptic conditions. Competitive growth of bacteria was observed, but this was minimised by manipulation of the solids retention time and the hydraulic retention time. Removal of about 90% of the waste organic material (as BOD) from the wastewater was achieved simultaneously. Since essentially all fungi are retained behind the 100 mum aperture screen, the solids retention time could be controlled by the rate of harvesting. The hydraulic retention time was employed to control the bacterial growth as the bacteria were washed through the screen at a short HRT. A steady state model was developed to determine these two parameters. This model predicts the effluent quality. Experimental work is still needed to determine the growth characteristics of the selected fungal species under optimum conditions (pH and temperature).